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WO2018171783A1 - Procédé, appareil et système de transmission de signal - Google Patents

Procédé, appareil et système de transmission de signal Download PDF

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Publication number
WO2018171783A1
WO2018171783A1 PCT/CN2018/080387 CN2018080387W WO2018171783A1 WO 2018171783 A1 WO2018171783 A1 WO 2018171783A1 CN 2018080387 W CN2018080387 W CN 2018080387W WO 2018171783 A1 WO2018171783 A1 WO 2018171783A1
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WO
WIPO (PCT)
Prior art keywords
symbol
reference signal
index
time domain
mapped
Prior art date
Application number
PCT/CN2018/080387
Other languages
English (en)
Chinese (zh)
Inventor
孙裕
秦熠
栗忠峰
张雷鸣
窦圣跃
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201710814891.8A external-priority patent/CN108632179B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112019019840A priority Critical patent/BR112019019840A2/pt
Priority to JP2019552548A priority patent/JP7061619B2/ja
Priority to KR1020197030983A priority patent/KR102305312B1/ko
Priority to EP18772285.5A priority patent/EP3605977B1/fr
Priority to CA3057550A priority patent/CA3057550A1/fr
Publication of WO2018171783A1 publication Critical patent/WO2018171783A1/fr
Priority to US16/580,773 priority patent/US20200022172A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a signal transmission method, apparatus, and system.
  • the frequency device the local oscillator
  • the random jitter of the local oscillator causes the output carrier signal to carry phase noise.
  • the phase noise is directly related to the carrier frequency: the phase noise power varies by 20 log(n), and n is the frequency multiplier, that is, the doubling of the carrier frequency increases the phase noise power by 6 dB. Therefore, for high frequency wireless communication, the phase noise effect cannot be ignored.
  • the 3rd Generation Partnership Project (3GPP) has included high-frequency into the spectrum range adopted in the future evolution of the new wireless radio network (NR), so the phase noise-related impact needs to be included. Design considerations.
  • phase noise estimation is to estimate the phase error using an inserted phase tracking reference signal (PT-RS).
  • PT-RS phase tracking reference signal
  • new radio has supported the symbol-level time domain density of various PT-RSs.
  • the PT-RS may be continuously mapped on each symbol of the PUSCH (or PDSCH) (ie, "1 time domain density” shown in the figure), or may be on the PUSCH (or PDSCH). Mapped once every 2 symbols (ie, "1/2 time domain density” shown in the figure), and can also be mapped once every 4 symbols of the PUSCH (or PDSCH) (ie, as shown in the figure) 1/4 time domain density").
  • the physical downlink control channel (PDCCH) and the physical downlink shared channel (PDSCH) can be transmitted on the same symbol by frequency division, which results in demodulation reference signal (Demodulation Reference Signal).
  • PDSCH is also mapped on the symbol before DMRS). For example, as shown in FIG. 2, the DMRS is mapped on symbols 3, 4, the PDCCH is mapped on symbols 0, 1, and the PDSCH is also mapped on symbols 0, 1.
  • the symbol mapping scheme of the existing PT-RS as shown in FIG. 1 considers that the starting symbol of the PT-RS mapping is a symbol following the DMRS symbol, and can only be used to estimate the data channel mapped after the DMRS symbol. Phase noise.
  • the present application provides a signal transmission method, apparatus and system, which can ensure that a data channel mapped on a symbol before a DMRS also has a PT-RS mapping, thereby ensuring phase noise estimation performance.
  • the present application provides a signal transmission method, which is applied to a first device side (ie, a transmitting end), the method includes: the first device sends a first reference signal to a second device, where the first reference signal is used for phase track.
  • the first reference signal is mapped on the first symbol
  • the first symbol includes a symbol of a bearer data signal before the second symbol in the time domain unit
  • the second symbol refers to a bearer demodulation in the time domain unit.
  • the first symbol of the reference signal, or the second symbol refers to a plurality of consecutive symbols within the time domain unit, the consecutive plurality of symbols including a first symbol carrying a demodulation reference signal.
  • the present application provides a signal transmission method, which is applied to a second device side (ie, a receiving end).
  • the method includes: receiving, by a second device, a first reference signal sent by the first device.
  • the first reference signal is mapped on the first symbol, the first symbol includes a symbol of a bearer data signal before the second symbol in the time domain unit, and the second symbol refers to a bearer demodulation in the time domain unit.
  • the first symbol of the reference signal, or the second symbol refers to a plurality of consecutive symbols within the time domain unit, the consecutive plurality of symbols including a first symbol carrying a demodulation reference signal.
  • the second symbol is a symbol carrying the pre-loaded DMRS.
  • the first reference signal is PTRS.
  • mapping of the PT-RS may include the following two parts:
  • the symbol before the second symbol refers to the symbol whose index is smaller than the index of the second symbol
  • the symbol after the second symbol refers to the symbol whose index is larger than the index of the second symbol
  • the PT-RS can be mapped on the first symbol of the bearer data signal preceding the second symbol. That is to say, the PT-RS is mapped starting from the first symbol of the data channel (PUSCH/PDSCH). This ensures that the data channel on the symbol before the second symbol also has a PT-RS mapping, thereby ensuring phase noise estimation performance.
  • the second mapping rule before the second symbol, the index of the symbol used to carry the PT-RS is related to the first difference, and the first difference (H2) is the index (l 0 ) of the first symbol carrying the DMRS.
  • the first mapping rule after the second symbol, the index of the starting symbol mapped by the PT-RS may be determined by the time domain density of the PT-RS. And in the order in which the symbol index values are incremented, the PT-RS is mapped on the symbol with the smallest index among every L symbols. L is the reciprocal of the time domain density of the PT-RS.
  • the time domain density of the PT-RS may be related to at least one of a CP type, a subcarrier spacing, and a modulation order.
  • a CP type a subcarrier spacing
  • a modulation order a modulation order for details, refer to the following content, and details are not described herein.
  • the time domain density of the PT-RS, and the mapping relationship between the time domain density of the PT-RS and the index of the start symbol mapped by the PT-RS may be predefined by a protocol, or may be passed by the network device through a high layer letter. Order (such as RRC signaling) or PDCCH configuration.
  • the PT-RS can be uniformly mapped over the entire time domain symbol (including the second symbol, the symbol before the second symbol and the symbol after the second symbol).
  • the PT-RS is also uniformly mapped on the symbol following the second symbol.
  • the mapping priority of the PT-RS is lower than the PDCCH or the PUCCH or the SS block or the CSI-RS or the SRS.
  • the PT-RS is mapped on the last symbol of the bearer data signal after the second symbol, and uniformly mapped on the symbol following the second symbol in descending order of the symbol index value.
  • a fourth mapping rule, after the second symbol, the index of the symbol used to carry the PT-RS is related to the number of symbols after the second symbol.
  • the PTRS mapping carries the first symbol of the data signal (PDSCH/PUSCH) in the time domain unit.
  • the PTRS maps the smallest symbol in each L symbols in the order in which the symbol index values are incremented. That is, starting from the first symbol carrying the data signal, the PT-RS can be uniformly mapped in the time domain unit.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the location of the symbol carrying the PTRS may be the symbol carrying the pre-loaded DMRS (ie, the second symbol)
  • the position of the ) and the first symbol of the bearer data signal (PDSCH/PUSCH) are related to the last symbol.
  • the first symbol carrying the data signal refers to a symbol having the smallest index among the symbols of the bearer data signal (PDSCH/PUSCH) in the time domain unit.
  • the last symbol carrying the data signal refers to the symbol with the largest index among the symbols of the bearer data signal (PDSCH/PUSCH) in the time domain unit.
  • the PT-RS may be uniformly mapped on the symbol before the second symbol in the order of increasing symbol index values.
  • the PT-RS may be uniformly mapped on the symbol following the second symbol in descending order of the symbol index value.
  • the location of the symbol carrying the PTRS may be related to the location of the symbol carrying the pre-loaded DMRS (ie, the second symbol).
  • the location of the symbol carrying the PTRS is also the symbol carrying the pre-loaded DMRS (ie, the second symbol)
  • the symbol index in the time domain unit is smaller than the number of symbols of the index of the first symbol carrying the pre-loaded DMRS, and the time domain.
  • the intra-unit symbol index is related to the number of symbols of the index of the last symbol of the pre-loaded DMRS.
  • the index of the last symbol carrying the PTRS before the second symbol is related to the first difference. Moreover, starting from the index of the last symbol carrying the PTRS, the PTRS is uniformly mapped on the symbol of the bearer data signal preceding the second symbol in descending order of the symbol index. Specifically, in the time domain unit, the index of the first symbol carrying the PTRS after the second symbol is related to the number of symbols after the second symbol. Moreover, starting from the index of the first symbol carrying the PTRS, the PTRS is uniformly mapped on the symbol following the second symbol in the order in which the symbol index is incremented.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the index is l 0 -1 Map the PTRS on the symbol.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the index is l 0 -2 Map the PTRS on the symbol.
  • the PTRS may be evenly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the difference H 2 between the index of the first symbol of the bearer data signal (PDSCH/PUSCH) before the pre-loaded DMRS and the index of the first symbol of the pre-loaded DMRS is an integer multiple of 4, and the index is l 0 PTRS is mapped on the -4 symbol.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the PTRS may uniformly map the symbols after the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index l of the symbol carrying the PT-RS can be expressed by the following formula:
  • L represents the reciprocal of the time domain symbol-level density of PTRS;
  • H 1 represents the number of symbols after the second symbol; represents H2 of the first difference;
  • l 0 indicates the index of the first symbol carrying the pre-loaded DMRS, and
  • l DM-RS indicates the index of the last symbol of the pre-loaded DMRS.
  • the mapping priority of the phase tracking reference signal may be lower than at least one of the following: a physical downlink control channel (PDCCH), physical uplink control Physical uplink control channel (PUCCH), synchronize signal block (SS block), channel state information reference signal (CSI-RS), and sounding reference signal (SRS) , demodulation reference signal (DMRS), etc. That is to say, the PT-RS is not mapped on a resource that needs to map any of the above signals. In this way, by establishing a mapping priority between the PT-RS and other reference signals and physical channels, when a resource conflict occurs between the PT-RS and other reference signals and physical channels, the collision can be avoided by not mapping the PT-RS.
  • PDCCH physical downlink control channel
  • PUCCH physical uplink control Physical uplink control channel
  • SS block synchronize signal block
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • DMRS demodulation reference signal
  • the present application provides a signal transmission method, which is applied to a network device side, and includes: the network device sends first indication information.
  • the first indication information indicates the location of the time-frequency resource occupied by the at least two groups of the first reference signals, and the antenna ports associated with each of the at least two groups of the first reference signals are not quasi-co-located.
  • the network device sends a data signal, and the data signal is not mapped on the time-frequency resources occupied by the at least two sets of first reference signals.
  • the present application provides a signal transmission method, which is applied to a terminal device side, where the method includes: the terminal device receives the first indication information, where the first indication information indicates the time-frequency resources occupied by the at least two groups of the first reference signals. Position, the antenna ports associated with each of the at least two sets of first reference signals are not quasi-co-located. Then, the terminal device determines, according to the first indication information, time-frequency resources occupied by at least two groups of first reference signals. The terminal device receives the data signal, and the data signal is not mapped on the time-frequency resource occupied by the at least two groups of the first reference signals.
  • the data may be transmitted on the resources of the PTRS transmitted by other transmission points (TRP) Rate matching (that is, no mapping of data) can avoid interference caused by data transmitted by different transmission points to PTRS, thereby ensuring phase noise estimation performance of PTRS.
  • TRP transmission points
  • Rate matching that is, no mapping of data
  • the first indication information may include the first information and the second information, where The first information is used to determine a subcarrier occupied by the PTRS, and the second information is used to determine a symbol occupied by the PTRS.
  • the first information may include at least one of the following: the sending enable information of the PTRS, the indication information of the DMRS port associated with the antenna port of the PTRS in the DMRS Port group, the indication information of the DMRS port group, or the frequency domain density of the PTRS. Indicates the association relationship with the scheduling bandwidth threshold.
  • the second information may include indication information of a relationship between a time domain density of the PTRS and an MCS threshold.
  • the subcarrier occupied by the first reference signal includes: a frequency domain density corresponding to a maximum scheduling bandwidth of the third device scheduled to the fourth device Subcarriers.
  • the symbol occupied by the first reference signal includes: the time domain density corresponding to the maximum modulation order of the third device scheduled to the fourth device Subcarriers.
  • the present application provides a communication device, which may include a plurality of functional modules for respectively performing the method provided by the first aspect, or any one of the possible embodiments of the first aspect. The method provided.
  • the present application provides a communication device, which may include a plurality of functional modules for respectively performing the method provided by the second aspect, or any one of the possible embodiments of the second aspect. The method provided.
  • the present application provides a communication apparatus for performing the signal transmission method described in the first aspect.
  • the terminal can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices.
  • the memory is for storing implementation code of a signal transmission method described in the first aspect
  • the processor is for executing program code stored in the memory, that is, performing the method provided by the first aspect, or a possible implementation of the first aspect The method provided by any of the modes.
  • the present application provides a communication apparatus for performing the signal transmission method described in the first aspect.
  • the network device can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices.
  • the memory is for storing implementation code of a signal transmission method described in the first aspect
  • the processor is for executing program code stored in the memory, that is, performing the method provided by the first aspect, or a possible implementation of the first aspect The method provided by any of the modes.
  • the application provides a chip, the chip can include a processor, and one or more interfaces coupled to the processor.
  • the processor may be configured to invoke, from a memory, a signal transmission method provided by the first aspect, or an implementation program of a signal transmission method provided by any one of the possible implementations of the first aspect, and execute the program including Instructions.
  • the interface can be used to output processing results of the processor.
  • the application provides a chip
  • the chip can include a processor, and one or more interfaces coupled to the processor.
  • the processor may be configured to invoke, from a memory, a signal transmission method provided by the first aspect, or an implementation program of a signal transmission method provided by any one of the possible implementations of the first aspect, and execute the program including Instructions.
  • the interface can be used to output processing results of the processor.
  • the application provides a network device, which may include multiple functional modules for respectively performing the method provided by the third aspect, or any one of the possible implementation manners of the third aspect. The method provided.
  • the present application provides a terminal device, which may include a plurality of functional modules for respectively performing the method provided by the fourth aspect, or any one of the possible implementation manners of the fourth aspect The method provided.
  • the present application provides a network device for performing the signal transmission method described in the third aspect.
  • the terminal device can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices, such as network devices.
  • the memory is for storing implementation code of the signal transmission method described in the third aspect
  • the processor is configured to execute the program code stored in the memory, that is, to perform the method provided by the third aspect, or the third aspect possible implementation The method provided by any of the modes.
  • the present application provides a terminal device for performing the signal transmission method described in the fourth aspect.
  • the terminal device can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices, such as terminals.
  • the memory is for storing implementation code of a signal transmission method described in the fourth aspect
  • the processor is configured to execute program code stored in the memory, that is, to perform the method provided by the fourth aspect, or a possible implementation of the fourth aspect The method provided by any of the modes.
  • the application provides a chip, the chip can include a processor, and one or more interfaces coupled to the processor.
  • the processor may be used to invoke a signal transmission method provided by the third aspect from the memory, or an implementation program of the signal transmission method provided by any one of the possible implementation manners of the third aspect, and execute the program including Instructions.
  • the interface can be used to output processing results of the processor.
  • the application provides a chip, the chip can include a processor, and one or more interfaces coupled to the processor.
  • the processor may be used to invoke a signal transmission method provided by the fourth aspect from the memory, or an implementation program of the signal transmission method provided by any one of the possible implementations of the fourth aspect, and execute the program including Instructions.
  • the interface can be used to output processing results of the processor.
  • the present application provides a wireless communication system, including a first device and a second device, where: the first device is operable to perform the signal transmission method provided by the first aspect, or the first aspect is possible a signal transmission method provided by any one of the embodiments; the second device may be configured to perform the signal transmission method provided by the second aspect, or the signal transmission provided by any one of the possible implementations of the second aspect method.
  • the first device may be the communication device described in the fifth aspect or the seventh aspect
  • the second device may be the communication device described in the sixth aspect or the eighth aspect.
  • the present application provides a wireless communication system, including a terminal device and a network device, where: the terminal is operative to perform the signal transmission method provided by the third aspect, or in a possible implementation manner of the third aspect Any of the provided signal transmission methods; the network device may be used to perform the signal transmission method provided by the fourth aspect, or the signal transmission method provided by any of the possible implementations of the fourth aspect.
  • the terminal device may be the network device described in the eleventh aspect or the thirteenth aspect, and the network device may be the terminal device described in the twelfth aspect or the fourteenth aspect.
  • a nineteenth aspect a computer readable storage medium having stored thereon a signal transmission method for implementing the first aspect, or any one of the possible embodiments of the first aspect
  • the program code of the signal transmission method comprising the execution of the signal transmission method provided by the first aspect, or the execution instruction of the signal transmission method provided by any of the possible implementations of the first aspect.
  • a computer readable storage medium storing a signal transmission method implemented by implementing the second aspect, or any one of the possible embodiments of the second aspect
  • a program code of a signal transmission method the program code comprising an execution instruction of a signal transmission method provided by the operation of the signal transmission method provided by the second aspect, or any one of the possible implementations of the second aspect.
  • a twenty-first aspect a computer readable storage medium storing the signal transmission method provided by the second aspect, or any one of the possible embodiments of the second aspect is provided
  • a program code for providing a signal transmission method the program code comprising an execution instruction of a signal transmission method provided by operating the second aspect, or a signal transmission method provided by any one of the possible implementations of the second aspect.
  • a twenty-second aspect a computer readable storage medium storing the signal transmission method provided by the second aspect, or any one of the possible embodiments of the second aspect is provided
  • a program code for providing a signal transmission method the program code comprising an execution instruction of a signal transmission method provided by operating the second aspect, or a signal transmission method provided by any one of the possible implementations of the second aspect.
  • FIG. 1 is a schematic diagram of a rule for mapping a PTRS in a time domain in the prior art
  • 2 is a schematic diagram of mapping PDSCH on symbols before DMRS
  • FIG. 3 is a schematic structural diagram of a wireless communication system according to the present application.
  • FIG. 4 is a schematic diagram of a hardware architecture of a terminal provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a hardware architecture of a network device according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of resource mapping of a DMRS according to the present application.
  • FIG. 8 is a schematic flow chart of a signal transmission method provided by the present application.
  • 9A-9L are schematic diagrams of PTRS time domain mapping rules provided by an embodiment of the present application.
  • 10A-10L are schematic diagrams of PTRS time domain mapping rules provided by another embodiment of the present application.
  • 11A-11C are schematic diagrams of PTRS time domain mapping rules provided by still another embodiment of the present application.
  • 12A-12D are schematic diagrams of PTRS time domain mapping rules provided by still another embodiment of the present application.
  • FIG. 13 is a schematic diagram of a scenario of non-interfering joint transmission involved in the present application.
  • 16 is a functional block diagram of a related device of a wireless communication system provided by the present application.
  • 17 is a functional block diagram of another related apparatus of the wireless communication system provided by the present application.
  • Figure 18 is a schematic structural view of an apparatus provided by the present application.
  • FIG. 19 is a schematic structural view of a device provided by the present application.
  • FIG. 3 shows a wireless communication system to which the present application relates.
  • the wireless communication system can work in a high frequency band, is not limited to a Long Term Evolution (LTE) system, and can be a fifth generation mobile communication (5th generation, 5G) system, a new air interface (NR). System, machine to machine (Machine to Machine, M2M) system.
  • LTE Long Term Evolution
  • 5G fifth generation mobile communication
  • NR new air interface
  • M2M machine to machine
  • the wireless communication system 10 can include one or more network devices 101, one or more terminals 103, and a core network 115. among them:
  • the network device 101 can be a base station, and the base station can be used for communicating with one or more terminals, and can also be used for communicating with one or more base stations having partial terminal functions (such as a macro base station and a micro base station, such as an access point, Communication between).
  • the base station may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or may be an evolved base station in an LTE system (Evolutional Node B). , eNB), and base stations in 5G systems, new air interface (NR) systems.
  • the base station may also be an Access Point (AP), a TransNode (Trans TRP), a Central Unit (CU), or other network entity, and may include some or all of the functions of the above network entities. .
  • Terminals 103 may be distributed throughout wireless communication system 100, either stationary or mobile.
  • terminal 103 may be a mobile device, a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, and the like.
  • network device 101 can be used to communicate with terminal 103 over one or more antennas under the control of a network device controller (not shown).
  • the network device controller may be part of the core network 115 or may be integrated into the network device 101.
  • the network device 101 can be configured to transmit control information or user data to the core network 115 through a blackhaul interface 113 (such as an S1 interface).
  • the network device 101 and the network device 101 can also communicate with each other directly or indirectly through a blackhaul interface 111 (such as an X2 interface).
  • FIG. 3 shows a wireless communication system to which the present application relates.
  • the wireless communication system can work in a high frequency band, is not limited to a Long Term Evolution (LTE) system, and can be a fifth generation mobile communication (5th generation, 5G) system, a new air interface (NR). System, machine to machine (Machine to Machine, M2M) system.
  • LTE Long Term Evolution
  • 5G fifth generation mobile communication
  • NR new air interface
  • M2M machine to machine
  • the wireless communication system 10 can include one or more network devices 101, one or more terminals 103, and a core network 115. among them:
  • the network device 101 can be a base station, and the base station can be used for communicating with one or more terminals, and can also be used for communicating with one or more base stations having partial terminal functions (such as a macro base station and a micro base station, such as an access point, Communication between).
  • the base station may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or may be an evolved base station in an LTE system (Evolutional Node B). , eNB), and base stations in 5G systems, new air interface (NR) systems.
  • the base station may also be an Access Point (AP), a TransNode (Trans TRP), a Central Unit (CU), or other network entity, and may include some or all of the functions of the above network entities. .
  • Terminals 103 may be distributed throughout wireless communication system 100, either stationary or mobile.
  • terminal 103 may be a mobile device, a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, and the like.
  • network device 101 can be used to communicate with terminal 103 over one or more antennas under the control of a network device controller (not shown).
  • the network device controller may be part of the core network 115 or may be integrated into the network device 101.
  • the network device 101 can be configured to transmit control information or user data to the core network 115 through a blackhaul interface 113 (such as an S1 interface).
  • the network device 101 and the network device 101 can also communicate with each other directly or indirectly through a blackhaul interface 111 (such as an X2 interface).
  • the wireless communication system shown in FIG. 3 is only for the purpose of more clearly explaining the technical solution of the present application, and does not constitute a limitation of the present application. As those skilled in the art can understand, with the network architecture
  • the terminal 200 may include: one or more terminal processors 201, a memory 202, a communication interface 203, a receiver 205, a transmitter 206, a coupler 207, an antenna 208, a user interface 202, and an input and output module. (including audio input and output module 210, key input module 211, display 212, etc.). These components can be connected by bus 204 or other means, and FIG. 4 is exemplified by a bus connection. among them:
  • Communication interface 203 can be used by terminal 200 to communicate with other communication devices, such as network devices.
  • the network device may be the network device 300 shown in FIG. 8.
  • the communication interface 203 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface.
  • LTE Long Term Evolution
  • 5G Fifth Generation
  • the terminal 200 may be configured with a wired communication interface 203, such as a Local Access Network (LAN) interface.
  • LAN Local Access Network
  • Transmitter 206 can be used to perform transmission processing, such as signal modulation, on signals output by terminal processor 201.
  • Receiver 205 can be used to perform reception processing, such as signal demodulation, on the mobile communication signals received by antenna 208.
  • transmitter 206 and receiver 205 can be viewed as a wireless modem.
  • the number of the transmitter 206 and the receiver 205 may each be one or more.
  • the antenna 208 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line.
  • the coupler 207 is configured to divide the mobile communication signal received by the antenna 208 into multiple channels and distribute it to a plurality of receivers 205.
  • the terminal 200 may also include other communication components such as a GPS module, a Bluetooth module, a Wireless Fidelity (Wi-Fi) module, and the like. Not limited to the above-described wireless communication signals, the terminal 200 can also support other wireless communication signals such as satellite signals, short-wave signals, and the like. Not limited to wireless communication, the terminal 200 may also be configured with a wired network interface (such as a LAN interface) to support wired communication.
  • a wired network interface such as a LAN interface
  • the input and output module can be used to implement the interaction between the terminal 200 and the user/external environment, and can include the audio input and output module 210, the key input module 211, the display 212, and the like. Specifically, the input and output module may further include: a camera, a touch screen, a sensor, and the like. The input and output modules communicate with the terminal processor 201 through the user interface 209.
  • Memory 202 is coupled to terminal processor 201 for storing various software programs and/or sets of instructions.
  • memory 202 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.
  • the memory 202 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX.
  • the memory 202 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
  • the memory 202 can also store a user interface program, which can realistically display the content of the application through a graphical operation interface, and receive user control operations on the application through input controls such as menus, dialog boxes, and keys. .
  • the memory 202 can be used to store an implementation of the signal transmission method provided by one or more embodiments of the present application on the terminal 200 side.
  • the resource mapping method provided by one or more embodiments of the present application, please refer to the subsequent embodiments.
  • Terminal processor 201 can be used to read and execute computer readable instructions. Specifically, the terminal processor 201 can be used to invoke a program stored in the memory 212, such as a resource mapping method provided by one or more embodiments of the present application, to implement the program on the terminal 200 side, and execute the instructions included in the program.
  • a program stored in the memory 212 such as a resource mapping method provided by one or more embodiments of the present application, to implement the program on the terminal 200 side, and execute the instructions included in the program.
  • the terminal 200 can be the terminal 103 in the wireless communication system 100 shown in FIG. 5, and can be implemented as a mobile device, a mobile station, a mobile unit, a wireless unit, a remote unit, and a user agent. , mobile client and more.
  • the terminal 200 shown in FIG. 4 is only one implementation of the embodiment of the present application. In an actual application, the terminal 200 may further include more or less components, which are not limited herein.
  • network device 300 can include one or more network device processors 301, memory 302, communication interface 303, transmitter 305, receiver 306, coupler 307, and antenna 308. These components can be connected via bus 304 or other types, and FIG. 5 is exemplified by a bus connection. among them:
  • Communication interface 303 can be used by network device 300 to communicate with other communication devices, such as terminal devices or other network devices.
  • the terminal device may be the terminal 200 shown in FIG. 5.
  • the communication interface 303 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface.
  • LTE Long Term Evolution
  • the network device 300 may also be configured with a wired communication interface 303 to support wired communication.
  • the backhaul link between one network device 300 and other network devices 300 may be a wired communication connection.
  • Transmitter 305 can be used to perform transmission processing, such as signal modulation, on signals output by network device processor 301.
  • Receiver 306 can be used to perform reception processing on the mobile communication signals received by antenna 308. For example, signal demodulation.
  • transmitter 305 and receiver 306 can be viewed as a wireless modem. In the network device 300, the number of the transmitter 305 and the receiver 306 may each be one or more.
  • the antenna 308 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line.
  • Coupler 307 can be used to divide the mobile pass signal into multiple channels and distribute it to multiple receivers 306.
  • Memory 302 is coupled to network device processor 301 for storing various software programs and/or sets of instructions.
  • memory 302 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.
  • the memory 302 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as uCOS, VxWorks, or RTLinux.
  • the memory 302 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.
  • the network device processor 301 can be used to perform wireless channel management, implement call and communication link establishment and teardown, and provide cell handover control and the like for users in the control area.
  • the network device processor 301 may include: an Administration Module/Communication Module (AM/CM) (a center for voice exchange and information exchange), and a Basic Module (BM) (for Complete call processing, signaling processing, radio resource management, radio link management and circuit maintenance functions), code conversion and sub-multiplexer (TCSM) (for multiplexing demultiplexing and code conversion functions) )and many more.
  • AM/CM Administration Module/Communication Module
  • BM Basic Module
  • TCSM code conversion and sub-multiplexer
  • the network device processor 301 can be used to read and execute computer readable instructions. Specifically, the network device processor 301 can be used to invoke a program stored in the memory 302, such as the resource mapping method provided by one or more embodiments of the present application, on the network device 300 side, and execute the instructions included in the program. .
  • the network device 300 can be the base station 101 in the wireless communication system 100 shown in FIG. 5, and can be implemented as a base transceiver station, a wireless transceiver, a basic service set (BSS), and an extended service set (ESS). NodeB, eNodeB, access point or TRP, etc.
  • the network device 300 shown in FIG. 5 is only one implementation of the embodiment of the present application. In actual applications, the network device 300 may further include more or fewer components, which are not limited herein.
  • the present application provides a resource mapping method.
  • the main principle of the present application may include mapping a phase tracking reference signal (PT-RS) on a symbol of a bearer data signal before a symbol carrying a pre-loaded DMRS (DMRS).
  • PT-RS phase tracking reference signal
  • DMRS pre-loaded DMRS
  • a symbol carrying a preloaded DMRS may be referred to as a second symbol.
  • the second symbol refers to a contiguous at least one symbol carrying a DMRS, the at least one symbol comprising a first symbol carrying a DMRS.
  • the DMRS may include a front-loaded DMRS (pre-loaded DMRS) and an additional DMRS (additional-DMRS).
  • preloaded DMRS refers to a DMRS that continuously occupies one or more DMRS symbols with the smallest index in the DMRS symbol.
  • additional DMRS refers to other DMRSs other than the preloaded DMRS.
  • the DMRS symbol refers to a symbol carrying a DMRS.
  • the DMRS symbols are: symbol 3, symbol 4, and symbol 7.
  • the symbols carrying the pre-loaded DMRS are two consecutive symbols: symbol 3 and symbol 4, where symbol 3 is the first symbol carrying the DMRS, ie the first DMRS symbol.
  • the examples are merely illustrative of the application and should not be construed as limiting.
  • the mapping priority of the phase tracking reference signal may be lower than at least one of the following: a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), and a synchronization signal block ( The synchronization signal block (SS block), the channel state information reference signal (CSI-RS), the sounding reference signal (SRS), the demodulation reference signal (DMRS), and the like. That is to say, the PT-RS is not mapped on a resource that needs to map any of the above signals. In this way, by establishing a mapping priority between the PT-RS and other reference signals and physical channels, when a resource conflict occurs between the PT-RS and other reference signals and physical channels, the collision can be avoided by not mapping the PT-RS.
  • a mapping priority between the PT-RS and other reference signals and physical channels when a resource conflict occurs between the PT-RS and other reference signals and physical channels, the collision can be avoided by not mapping the PT-RS.
  • mapping of the PT-RS may include the following two parts:
  • the symbol before the second symbol refers to the symbol whose index is smaller than the index of the second symbol
  • the symbol after the second symbol refers to the symbol whose index is larger than the index of the second symbol.
  • the second symbol is: symbol 3 and symbol 4
  • the symbols before the second symbol are: symbol 0-2
  • the symbols following the second symbol are: symbols 5-13.
  • the examples are merely illustrative of the application and should not be construed as limiting.
  • the PT-RS is mapped on the first symbol of the bearer data signal preceding the second symbol. That is to say, the PT-RS is mapped starting from the first symbol of the data channel (PUSCH/PDSCH). This ensures that the data channel on the symbol before the second symbol also has a PT-RS mapping, thereby ensuring phase noise estimation performance.
  • This mapping method is described in detail in subsequent embodiments 1 and 2, and will not be described here.
  • the second mapping rule before the second symbol, the index of the symbol used to carry the PT-RS is related to the first difference, and the first difference (H2) is the index (l 0 ) of the first symbol carrying the DMRS.
  • the PT-RS may be mapped to the symbol of the bearer data signal before the second symbol in other manners, which is not limited in this application.
  • the first mapping rule after the second symbol, the index of the starting symbol mapped by the PT-RS may be determined by the time domain density of the PT-RS. And in the order in which the symbol index values are incremented, the PT-RS is mapped on the symbol with the smallest index among every L symbols. L is the reciprocal of the time domain density of the PT-RS.
  • the start symbol mapped by the PT-RS is the first symbol after the second symbol, that is, the symbol 3.
  • the time domain density of the PT-RS is "1/2"
  • the start symbol mapped by the PT-RS is the second symbol after the second symbol, that is, the symbol 4.
  • the time domain density of the PT-RS is "1/4"
  • the start symbol mapped by the PT-RS is the first symbol after the second symbol, that is, the symbol 3.
  • the time domain density of the PT-RS may be related to at least one of a CP type, a subcarrier spacing, and a modulation order.
  • a CP type a CP type
  • a subcarrier spacing a subcarrier spacing
  • a modulation order a modulation order
  • the time domain density of the PT-RS, and the mapping relationship between the time domain density of the PT-RS and the index of the start symbol mapped by the PT-RS may be predefined by a protocol, or may be passed by the network device through a high layer letter. Order (such as RRC signaling) or PDCCH configuration.
  • the PTRS starts to map from the first symbol of the physical data sharing channel (PDSCH/PUSCH), and uniformly maps the time domain symbols in the time domain unit (including the second symbol, the symbol before the second symbol, and the On the symbol after the second symbol).
  • the PT-RS is also uniformly mapped on the symbol following the second symbol.
  • the mapping priority of the PT-RS is lower than the PDCCH or the PUCCH or the SS block or the CSI-RS or the SRS. This mapping method will be described in detail in the following embodiments, and will not be described here.
  • a third mapping rule the PT-RS is mapped on the last symbol of the bearer data signal after the second symbol, and uniformly mapped on the symbol following the second symbol in descending order of the symbol index value. This mapping method will be described in detail in the following second embodiment, and will not be described here.
  • a fourth mapping rule, after the second symbol, the index of the symbol used to carry the PT-RS is related to the number of symbols after the second symbol. This mapping method will be described in detail in the following third embodiment, and will not be described here.
  • the above four mapping methods can achieve uniform mapping of the PT-RS on the symbol after the second symbol.
  • the PT-RS may also be mapped to the symbols following the second symbol in other manners, which is not limited in this application.
  • the time domain density of the PT-RS may be the same or different before and after the second symbol.
  • the resources involved in the present application refer to time-frequency resources, including time domain resources and frequency domain resources, and are usually resource elements (Resource Element, RE), Resource Block (RB), symbol (symbol), and subcarrier (subcarrier).
  • TTI Transmission Time Interval
  • the entire system resource is composed of a frequency domain and a time domain divided grid, wherein one grid represents one RE, and one RE is composed of one subcarrier on the frequency and one symbol on the time domain.
  • the index values of the symbols correspond to the timing from first to last in the order of small to large, that is, the symbols whose symbol index values are small in time series are in front of the symbols with large symbol index values.
  • the present application does not limit the specific symbol index and timing correspondence.
  • the symbol index values may correspond to the timing from first to last in descending order.
  • the present application provides a drawing for explaining only the embodiment of the present invention.
  • the size of the resource block in the future communication standard, the number of symbols included in the resource block, the number of subcarriers, and the like may be different.
  • the resources mentioned in this application. The blocks are not limited to the drawings.
  • FIG. 8 shows the overall flow of a signal transmission method provided by the present application. The following expands the description:
  • the first device maps the first reference signal (PT-RS) on the first symbol.
  • the first symbol includes a symbol of a bearer data signal whose index is smaller than an index of the second symbol (preloaded DMRS symbol), and the second symbol refers to at least one symbol carrying a DMRS, the at least one symbol includes a bearer.
  • the first symbol of the DMRS is a symbol of a bearer data signal whose index is smaller than an index of the second symbol (preloaded DMRS symbol)
  • the first device may map the PT-RS to the time domain according to the time domain density of the PT-RS and the PT-RS time domain mapping rule predefined by the protocol.
  • the PT-RS time domain mapping rule on the symbol before the second symbol and the PT-RS time domain mapping rule on the symbol after the second symbol, reference may be made to the foregoing inventive principles and subsequent embodiments, and details are not described herein. .
  • the first device sends a first reference signal (PT-RS) to the second device.
  • the second device receives the first reference signal (PT-RS) sent by the first device.
  • the second device may determine, according to the time domain density of the first reference signal (PT-RS), the static definition of the protocol, or the high-level signaling, configure the PT-RS time domain mapping rule, and determine to carry the first reference signal (PT).
  • the symbol of the -RS) ie the first symbol
  • the first reference signal (PT-RS) is received on these time domain symbols.
  • the second device performs phase tracking according to the first reference signal (PT-RS).
  • the PT-RS time domain mapping rule may be statically defined by the protocol or configured by higher layer signaling.
  • the symbols on which the first reference signal (PT-RS) is mapped may be determined according to the time domain density of the first reference signal (PT-RS) (refer to the following first embodiment).
  • the symbols on which the first reference signal (PT-RS) is mapped may be determined according to the time domain density of the first reference signal (PT-RS) and the position of the symbol carrying the pre-loaded DMRS (ie, the second symbol) (refer to Subsequent Embodiments 2 and 3).
  • the time domain density of the PT-RS may be related to at least one of a CP type, a subcarrier spacing, and a modulation order (MCS), that is, the first device does not need to additionally notify the second device of the time domain density of the PT-RS.
  • the second device determines the time domain density of the PT-RS by at least one of a CP type, a subcarrier spacing, and a modulation order (MCS).
  • MCS modulation order
  • the symbol carrying the pre-loaded DMRS can learn the location of the second symbol by using the DMRS resource pattern (the protocol defines the DMRS resource pattern used by different antenna ports), that is, the first device does not need to additionally notify the second device of the second symbol.
  • the location of the second symbol can be determined by the second device through the antenna port of the DMRS.
  • the first device can determine according to other parameters (such as MCS, DMRS antenna port, etc.) without additional notification.
  • the symbol carrying the first reference signal (PT-RS) can significantly save signaling overhead.
  • the first device may be a terminal device, and the second device may be a network device.
  • the first device may be a network device, and the second device may be a terminal device.
  • the first device and the second device may both be terminal devices, and may also be network devices.
  • the PTRS mapping is carried on the first symbol of the data signal (PDSCH/PUSCH) in the time domain unit.
  • the PTRS maps the smallest symbol in each L symbols in the order in which the symbol index values are incremented. That is, starting from the first symbol carrying the data signal, the PT-RS can be uniformly mapped in the time domain unit.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the time domain unit may be a time slot, or an aggregation time slot, or a subframe, or a Transmission Time Interval (TTI) or the like.
  • TTI Transmission Time Interval
  • the index l of the symbol carrying the PT-RS can be expressed by the following formula:
  • the mapping priority of the PTRS is lower than at least one of the following: a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a synchronization signal (SS block), and a channel state information reference signal (CSI-RS). , Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Physical Broadcast Channel (PBCH).
  • the mapping priority is lower than the PDCCH/PUCCH/SS block/CSI-RS/SRS/DMRS means that if the PTRS time-frequency domain mapping rule is used, the PDCCH/PUCCH/ needs to be mapped on the resource unit (RE) to which the PTRS needs to be mapped.
  • These special signals do not map PTRS on this resource unit. It can be understood that if these special signals are mapped on the symbol with the smallest index among every L symbols, the PTRS is not mapped on the REs that map these special signals. It can be understood that if all the subcarriers on one or more symbols of the PTRS to be mapped are mapped with these special signals according to the PTRS time domain mapping rule, the PTRS is not mapped on the one or more symbols.
  • the resource unit is Send zero-power PTRS (ZP-PTRS) or send silent PTRS (Muted-PTRS).
  • FIGS. 9A-9L and FIGS. 10A-10L exemplarily show schematic diagrams of the PTRS time domain mapping rules provided by this embodiment.
  • 9A-9L and FIG. 10A-10L exemplarily illustrate the mapping of PTRS time domain mapping rules according to the present embodiment, which are different DMRS configurations or different PDCCH configurations or different PDSCH configurations.
  • the preloaded DMRS is mapped on symbol 3, that is, the second symbol is symbol 3.
  • the additional DMRS is mapped on symbol 7.
  • the PDCCH and the PDSCH share the symbol 0-2 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the last 5 symbols (i.e., symbols 9-13) in the time domain unit (i.e., slot) do not map PDSCH, i.e., symbols 9-13 do not carry downlink data signals.
  • the PTRS is mapped on the first symbol (i.e., symbol 0) that carries the data signal.
  • the PTRS is mapped on symbol 0, symbol 2, symbol 4, symbol 6, and symbol 8.
  • the preloaded DMRS is mapped on symbol 2, that is, the second symbol is symbol 2.
  • the additional DMRS is mapped on symbol 7.
  • the PDCCH and the PDSCH share the symbol 0-1 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the last 5 symbols (i.e., symbols 9-13) in the time domain unit (i.e., slot) do not map PDSCH, i.e., symbols 9-13 do not carry downlink data signals.
  • the PT-RS is mapped on the first symbol (i.e., symbol 0) carrying the data signal.
  • the preloaded DMRS is mapped on symbol 3, that is, the second symbol is symbol 3.
  • the additional DMRS is mapped on symbol 7.
  • the PDCCH and the PDSCH share the symbol 0-2 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the last 5 symbols (i.e., symbols 9-13) in the time domain unit (i.e., slot) do not map PDSCH, i.e., symbols 9-13 do not carry downlink data signals.
  • the PTRS is mapped on the first symbol (ie, symbol 0) that carries the data signal.
  • the PTRS is mapped on symbol 0, symbol 4, and symbol 8.
  • the preloaded DMRS is mapped on symbol 3, that is, the second symbol is symbol 3.
  • the additional DMRS is mapped on symbol 8.
  • the PDCCH and the PDSCH share the symbol 0-2 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the last 5 symbols (i.e., symbols 9-13) in the time domain unit (i.e., slot) do not map PDSCH, i.e., symbols 9-13 do not carry downlink data signals.
  • the PT-RS is mapped on the first symbol (ie, symbol 0) carrying the data signal.
  • FIG. 9A-9L and FIG. 10A - 10L only exemplarily show some implementation manners of this embodiment.
  • resources (subcarriers and symbols) of DMRS and resources of PDCCH (subcarriers) are mapped.
  • the sum symbol), the resources (subcarriers and symbols) that map the PDSCH, and the like may also be different and should not be construed as limiting.
  • the PT-RS time domain mapping rule provided in the first embodiment maps the PTRS from the first symbol of the data channel, and ensures that the data channel before the symbol carrying the pre-loaded DMRS also has a PTRS mapping, thereby Guarantee phase noise estimation performance.
  • a mapping priority between a PTRS and a special signal such as a reference signal or a physical channel
  • when a PTRS mapping resource conflicts with a special signal such as another reference signal or a physical channel, the collision can be avoided by not mapping the PTRS.
  • the location of the symbol carrying the PTRS may be the location of the symbol carrying the pre-loaded DMRS (ie, the second symbol), and the first symbol and finally of the bearer data signal (PDSCH/PUSCH).
  • the first symbol carrying the data signal refers to a symbol having the smallest index among the symbols of the bearer data signal (PDSCH/PUSCH) in the time domain unit.
  • the last symbol carrying the data signal refers to the symbol with the largest index among the symbols of the bearer data signal (PDSCH/PUSCH) in the time domain unit.
  • the time domain unit may be a time slot, or an aggregation time slot, or a subframe, or a Transmission Time Interval (TTI) or the like.
  • TTI Transmission Time Interval
  • the PTRS may be mapped on the first symbol of the bearer data signal before the second symbol (ie, the symbol carrying the pre-loaded DMRS). Moreover, before the second symbol, in the order in which the symbol index values are incremented, the PTRS can be mapped on the symbol with the smallest index among every L symbols. That is to say, starting from the first symbol carrying the data signal, the PT-RS can be uniformly mapped on the symbol preceding the second symbol in the order in which the symbol index values are incremented.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the PTRS may be mapped on the last symbol of the bearer data signal after the second symbol (ie, the symbol carrying the pre-loaded DMRS). Moreover, after the second symbol, in the order in which the symbol index values are decremented, the PTRS can be mapped on the symbol with the largest index among every L symbols. That is to say, starting from the last symbol of the bearer data signal, the PT-RS can be uniformly mapped on the symbol following the second symbol in descending order of the symbol index value.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the index l of the symbol carrying the PT-RS can be expressed by the following formula:
  • An index indicating the first symbol of the bearer data signal (PDSCH/PUSCH), Indicates the index of the last symbol of the bearer data signal (PDSCH/PUSCH), and L represents the reciprocal of the symbol-level time domain density of the PTRS.
  • l DM-RS indicates the last symbol of the preloaded DMRS
  • l 0 indicates the first symbol of the preloaded DMRS. For example, when DMRS is one symbol, l DM-RS is equal to l 0 ; when DMRS is two symbols, l DM-RS is equal to l 0 +1.
  • FIG. 11A-11C exemplarily shows a schematic diagram of the PTRS time domain mapping rule provided by this embodiment.
  • 11A-11C exemplarily show a PTRS mapping diagram mapped by a PTRS time domain mapping rule according to the present embodiment, in which several typical different DMRS configurations or different PDCCH configurations or different PDSCH configurations are used.
  • the preloaded DMRS is mapped on symbol 1, that is, the second symbol is symbol 1.
  • the PDCCH and the PDSCH share the symbol 0 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS prior to symbol 1, the PTRS is mapped on the first symbol (ie, symbol 0) that carries the data signal.
  • the PTRS is mapped on symbol 0, symbol 2-13.
  • the preloaded DMRS is mapped on symbol 1, that is, the second symbol is symbol 2.
  • the PDCCH and the PDSCH share the symbol 0 and the symbol 1 in a frequency division multiplexing manner, that is, the symbols before the pre-loaded DMRS are carried.
  • the PTRS prior to symbol 2, the PTRS is mapped on the first symbol (ie, symbol 0) carrying the data signal.
  • the PTRS is mapped on symbol 0, symbol 3, symbol 5, symbol 7, symbol 9, symbol 11, and symbol 13.
  • the preloaded DMRS is mapped on symbol 1, that is, the second symbol is symbol 3.
  • the PDCCH and the PDSCH share the symbol 0-2 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS is mapped on the first symbol (ie, symbol 0) that carries the data signal.
  • the PTRS is mapped on symbol 0, symbol 5, symbol 9 and symbol 13.
  • 11A-11C exemplarily shows some implementation manners of the present embodiment.
  • resources (subcarriers and symbols) of DMRS, resources (subcarriers and symbols) mapped to PDCCH, and mapping are mapped.
  • the resources (subcarriers and symbols) of the PDSCH and the like may also be different and should not be construed as limiting.
  • the mapping priority of the PTRS is lower than at least one of the following: a physical downlink control channel (PDCCH), a physical uplink control channel (PUCCH), a synchronization signal (SS block), and a channel state information reference signal. (CSI-RS), Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Physical Broadcast Channel (PBCH).
  • a physical downlink control channel PUCCH
  • PUCCH physical uplink control channel
  • SS block synchronization signal
  • CSI-RS channel state information reference signal
  • SRS Sounding Reference Signal
  • DMRS Demodulation Reference Signal
  • PBCH Physical Broadcast Channel
  • the PT-RS time domain mapping rule provided in Embodiment 2 maps the PTRS from the first symbol and the last symbol of the data channel to the intermediate symbol, ensuring that the PTRS is mapped on the edge symbol of the data channel, thereby The interpolation estimation performance of the PTRS is guaranteed, and the data channel before the mapping of the pre-loaded DMRS symbol is also guaranteed to have a PTRS mapping, thereby ensuring phase noise estimation performance.
  • the location of the symbol carrying the PTRS may be related to the location of the symbol carrying the pre-loaded DMRS (ie, the second symbol).
  • the location of the symbol carrying the PTRS is also the symbol carrying the pre-loaded DMRS (ie, the second symbol)
  • the symbol index in the time domain unit is smaller than the number of symbols of the index of the first symbol carrying the pre-loaded DMRS, and the time domain.
  • the intra-unit symbol index is related to the number of symbols of the index of the last symbol of the pre-loaded DMRS.
  • the time domain unit may be a time slot, or an aggregation time slot, or a subframe, or a Transmission Time Interval (TTI) or the like.
  • TTI Transmission Time Interval
  • the index of the last symbol carrying the PTRS before the second symbol is related to the first difference.
  • the PTRS is uniformly mapped on the symbol of the bearer data signal preceding the second symbol in descending order of the symbol index.
  • the index of the symbol carrying the PTRS before the second symbol is related to the first difference.
  • the first difference (H2) is the difference between the index of the first symbol carrying the pre-loaded DMRS (l 0 ) and the index of the first symbol of the bearer data signal (PDSCH/PUSCH).
  • uniform mapping refers to uniform mapping according to PTRS time domain density 1/L.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the index of the first symbol carrying the PTRS after the second symbol is related to the number of symbols after the second symbol.
  • the PTRS is uniformly mapped on the symbol following the second symbol in the order in which the symbol index is incremented.
  • uniform mapping refers to uniform mapping according to PTRS time domain density 1/L.
  • L is the reciprocal of the symbol-level time domain density of the PTRS, and the value of L can be determined according to the symbol-level time domain density of the PTRS, for example, the value may be ⁇ 1, 2, 4 ⁇ .
  • the number of symbols after the second symbol can be represented by H 1 .
  • the first difference can be represented by H2.
  • the index of the first symbol carrying the pre-loaded DMRS may be represented by l 0
  • the index of the last symbol carrying the pre-loaded DMRS may be represented by l DM-RS .
  • the position of the symbol carrying the PTRS is related to H 1 , H 2 .
  • map PTRS time domains are some ways to map PTRS time domains:
  • the index is l DM-RS.
  • the PTRS is mapped on the +1 symbol.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the index is l 0 -1 Map the PTRS on the symbol.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index is l DM-RS.
  • PTRS is mapped on the +2 symbol.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the index is l 0 -2 Map the PTRS on the symbol.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index is PTRS is mapped on the symbol of DM-RS +4.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the difference H 2 between the index of the first symbol of the bearer data signal (PDSCH/PUSCH) before the pre-loaded DMRS and the index of the first symbol of the pre-loaded DMRS is an integer multiple of 4, and the index is l 0 PTRS is mapped on the -4 symbol.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index is l DM-
  • the PTRS is mapped on the symbol of RS +1.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index is l DM-
  • the PTRS is mapped on the symbol of RS + 2.
  • the PTRS may be uniformly mapped on the symbol following the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index is l DM-
  • the PTRS is mapped on the symbol of RS + 3.
  • the PTRS may uniformly map the symbols after the second symbol in an increasing order of the symbol index.
  • the PTRS may be uniformly mapped on the symbol before the second symbol in descending order of the symbol index.
  • the index l of the symbol carrying the PT-RS can be expressed by the following formula:
  • L represents the reciprocal of the time domain symbol-level density of PTRS;
  • H 1 represents the number of symbols after the second symbol; represents H2 of the first difference;
  • l 0 indicates the index of the first symbol carrying the pre-loaded DMRS, and
  • l DM-RS indicates the index of the last symbol of the pre-loaded DMRS.
  • FIG. 12A-12D exemplarily shows a schematic diagram of the PTRS time domain mapping rule provided by this embodiment.
  • FIG. 12A-12D exemplarily show PTRS mappings mapped by the PTRS time domain mapping rules according to the present embodiment, which are exemplified in several typical different DMRS configurations or different PDCCH configurations or different PDSCH configurations.
  • the preloaded DMRS is mapped on symbol 2, that is, the second symbol is symbol 2.
  • the PDCCH and the PDSCH share the symbol 0-1 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS is mapped on symbol 0.
  • the PTRS is mapped on symbol 0, symbol 3, symbol 5, symbol 7, symbol 9, symbol 11, and symbol 13.
  • the preloaded DMRS is mapped on symbol 3, that is, the second symbol is symbol 3.
  • the PDCCH and the PDSCH share the symbol 0-2 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS is mapped on symbol 2.
  • the PTRS is mapped on symbol 2, symbol 5, symbol 7, symbol 9, symbol 11 and symbol 13.
  • the preloaded DMRS is mapped on symbol 1, that is, the second symbol is symbol 1.
  • the PDCCH and the PDSCH share the symbol 0 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS is mapped on symbol 0.
  • the preloaded DMRS is mapped on symbol 2, that is, the second symbol is symbol 2.
  • the PDCCH and the PDSCH share the symbol 0-1 in a frequency division multiplexing manner, that is, the symbol before the pre-loaded DMRS is carried.
  • the PTRS is mapped on symbol 0.
  • resources (subcarriers and symbols) of DMRS, resources (subcarriers and symbols) mapped to PDCCH, and mapping are mapped.
  • the resources (subcarriers and symbols) of the PDSCH and the like may also be different and should not be construed as limiting.
  • the PT-RS time domain mapping rule provided in the first embodiment can be used to determine the location of the symbol carrying the DMRS and the location of the symbol carrying the PTRS, and the PTRS can be determined by using the time domain mapping pattern of the DMRS.
  • the location of the symbol saves signaling overhead.
  • the PTRS is mapped on the last symbol of the data channel to ensure the interpolation estimation performance of the PTRS, and the data channel before the symbol carrying the pre-loaded DMRS is also mapped with PTRS, thereby ensuring the phase noise estimation performance. .
  • one or more sets of data resource mapping indication (PDSCH-RE-MappingConfig) information is included in high layer signaling, such as RRC signaling, and the data resource mapping indication information includes data resources.
  • Mapping information indicating information (pdsch-RE-MappingConfigId) of the information and information about the time-frequency resource location of the PTRS, and the related information may be, for example, a pattern indicating a phase tracking reference signal (PTRS pattern) and/or an antenna port of the phase tracking reference signal ( PTRS port) and so on.
  • a specific signaling implementation is as follows:
  • the data resource mapping indication information includes identification information of the data resource mapping indication information (pdsch-RE-MappingConfigId) and related information of the time-frequency resource location of the PTRS, where the related information includes PTRS ports and/or PTRS pattern; or PTRS port group .
  • PTRS ports represent antenna port information of the PTRS (for example, the antenna port information herein includes the port number of the antenna port); PTRS pattern indicates a PTRS pattern; or PTRS port group indicates information of the PTRS antenna port group.
  • the DCI specifically indicates which group of data resource mapping indication information used by the RRC configuration.
  • the data resource mapping indication information configured in the RRC signaling may be indicated by the bits of the PDSCH RE Mapping and Quasi-Co-Location Indicator (PQI) in the DCI.
  • Identification information (for example, pdsch-RE-MappingConfigId).
  • Table 1 illustrates the data resource mapping and quasi-co-location indication fields by 2 bits.
  • Data resource mapping and quasi-co-location indication field (bit value) description 00 Identification of the data resource mapping indication information of the RRC configuration 1 01 Identification of the data resource mapping indication information of the RRC configuration 2 10 Identification of the data resource mapping indication information of the RRC configuration 3 11 Identification of the data resource mapping indication information of the RRC configuration 4
  • the data resource mapping and the quasi-co-location indication field can also be understood as a specific implementation manner of the second indication information carried by the DCI.
  • the second indication information by indicating the corresponding identifier, can further determine related information of the time-frequency resource location of the phase tracking reference signal corresponding to the identifier in the RRC.
  • the identifier information of the data resource mapping indication information is the identifier 1
  • the bit value of the data resource mapping and the quasi-co-location indication field in the DCI is “00”
  • the DCI indication identifier 1 may be determined.
  • the phase tracking information of the phase-track resource of the reference signal can further determine that the relevant information is PTRS ports ENUMERATED ⁇ 7,8,9,10,11,12,13,14,spare1 ⁇ , and/or PTRS pattern ENUMERATED ⁇ pattern 1,pattern 2 ⁇ ; or PTRS port group ENUMERATED ⁇ group number 1, group number 2, ... ⁇ .
  • the receiving end ie, the second device obtains the time-frequency resource location of the PTRS in the data resource mapping indication information, that is, the data is not mapped to the time-frequency resource location of the PTRS. That is, data reception is not performed at the time-frequency resource location of the PTRS.
  • the present application further provides another signal transmission method, which can be used to transmit data of PTRS at other transmission points (TRP) in a non-coherent joint transmission (NCJT) scenario.
  • Rate matching that is, no mapping of data
  • NJT non-coherent joint transmission
  • the TM10 supports Coordination Multiple Point (CoMP).
  • CoMP Coordination Multiple Point
  • the signal may come from multiple transmission points.
  • NJT non-coherent transmission
  • different transmission points can transmit different MIMO data to the same terminal device on the same time-frequency resource. MIMO layers.
  • the signal may come from multiple transmission points (TPs) or transmission reception points (TRPs).
  • TPs transmission points
  • TRPs transmission reception points
  • the antenna ports in CoMP need to meet the QCL limit.
  • Network devices may sometimes need to configure multiple sets of QCL information to notify the terminal device.
  • NJT non-coherent joint transmission
  • different transmission points such as network devices
  • demodulation reference signal (DMRS) antenna ports (sometimes called DMRS ports) and channel state information reference at the first transmission point
  • Channel state information reference signal (CSI-RS) antenna port (sometimes called CSI-RS ports) and/or PTRS is QCL (ie, satisfying QCL relationship)
  • CSI-RS Channel state information reference signal
  • PTRS CSI- at the second transmission point
  • the RS antenna port and/or PTRS is QCL, and the antenna port between the first transmission point and the second transmission point is non-QCL (ie, does not satisfy the QCL relationship).
  • the definition of QCL in this embodiment may refer to the definition in LTE, that is, the signal sent from the antenna port of the QCL will undergo the same large-scale fading, and the large-scale fading includes one or more of the following: delay extension, Doppler Le expansion, Doppler shift, average channel gain, and average delay.
  • the definition of QCL in the embodiment of the present application can also refer to the definition of QCL in 5G.
  • the definition of QCL is similar to that of the LTE system, but the airspace information is added, for example, the signal sent from the antenna port of the QCL.
  • the airspace parameter may be a power angle spread spectrum such as an emission angle (AOA), a main emission angle (Dominant AoA), an average arrival angle (Average AoA), an angle of arrival (AOD), a channel correlation matrix, an angle of arrival, and an average trigger.
  • Angle AoD power angle spread spectrum of the departure angle, transmit channel correlation, receive channel correlation, transmit beamforming, receive beamforming, spatial channel correlation, filters, spatial filtering parameters, or spatial receive parameters, etc.
  • the QCL relationship includes a channel state information-reference signal (CSI-RS) that satisfies the QCL relationship, a DMRS, and a phase tracking reference signal (PTRS) (also referred to as a phase compensation reference signal (phase). Compensation reference signal (PCRS), or phase noise reference signal (referred to as phase noise reference signal), a synchronization block (SS block) (including one or more of a synchronization signal and a broadcast channel, the synchronization signal including the primary synchronization signal PSS and / or one or more of the synchronization signals SSS), the uplink reference signal (such as the sounding reference signal, SRS, uplink DMRS).
  • CSI-RS channel state information-reference signal
  • PTRS phase tracking reference signal
  • PCRS phase compensation reference signal
  • phase noise reference signal phase noise reference signal
  • SS block including one or more of a synchronization signal and a broadcast channel, the synchronization signal including the primary synchronization signal PSS and / or one or more of the synchronization signals S
  • the transmission point 2 transmits the data on the time-frequency resource of the PTRS
  • the transmission point 2 transmits the data
  • the return link between the multiple transmission points is a non-ideal backhaul link
  • the data transmitted by the transmission point 2 (TRP2) may interfere with the PTRS transmitted by the transmission point 1 (TRP1), thereby affecting the terminal equipment to the transmission point 1 (TRP1). Receive performance of the transmitted PTRS.
  • TRP2 transmits data on the time-frequency resource of the transmission point 2 (TRP2) transmitting PTRS
  • TRP1 the data transmitted by the transmission point 1 (TRP1) will be transmitted to the transmission point 2 (TRP2).
  • PTRS creates interference.
  • the network device 1 and the network device 2 exchange PTRS information (ie, the aforementioned first reference signal) mapping resource set.
  • the network device 2 may send the PTRS information to the network device 1 by using an X2 interface, where the PTRS information is used to determine a time-frequency resource occupied by the PTRS from the network device 2, that is, a PTRS mapping resource set of the network device 2.
  • the PTRS mapping resource set of the network device 2 refers to a time-frequency resource that the network device 2 may transmit the PTRS, but the actual network device 2 may transmit the PTRS only on some resources in the set, or the actual network device 2 does not transmit the PTRS. .
  • the network device 1 and the network device 2 need to notify each other of the respective PTRS resource mapping sets, for example, mutually inform each of the following parameters: the PTRS transmission enable information, and the PTRS antenna port associated with the DMRS Port group.
  • the network device 1 can also send the PTRS information to the network device 2 through the X2 interface, which is not limited in the present invention.
  • the network device 1 (or the network device 2) sends the first indication information to the terminal device.
  • the first indication information sent by the network device 1 (or the network device 2) is used to indicate the location of the time-frequency resources occupied by the at least two groups of PTRSs, and each group of PTRSs and other reference signals (eg, DMRS, CSI-RS, SS block, SRS) Etc.) has a set of QCL relationships, corresponding to a network device, the QCL relationship of each group of PTRS is different, that is, the PTRS group and the group are non-QCL.
  • the antenna ports in the PTRS antenna port group 1 satisfy the first QCL relationship
  • the antenna ports in the PTRS antenna port group 2 satisfy the second QCL relationship, wherein the first QCL relationship is different from the second QCL relationship.
  • the first QCL relationship may correspond to the network device 1
  • the second QCL relationship may correspond to the network device 2.
  • the other reference signal may be referred to as a third reference signal.
  • the first indication information that the network device 1 (or the network device 2) sends to the terminal device may be jointly indicated by the high layer signaling or the high layer signaling and the physical layer signaling.
  • the first indication information is RRC signaling
  • the RRC signaling includes at least two sets of data resource mapping indication (PDSCH-RE-MappingConfig) information
  • the data resource mapping indication information includes the data resource mapping indication information.
  • the identification information (pdsch-RE-MappingConfigId) and the information about the time-frequency resource location of the PRTS, the related information may be a DMRS pattern indicating a PTRS and/or an DMRS port of the PTRS, or a PTRS group identifier and many more.
  • a specific signaling implementation is as follows:
  • the content included in one of the data resource mapping indication information in the RRC signaling is displayed, where the data resource mapping indication information includes the identifier information of the data resource mapping indication information (pdsch-RE-MappingConfigId) Information about the location of the time-frequency resource of the PTRS, where the relevant information includes PTRS ports and/or PTRS pattern; or PTRS port group.
  • PTRS ports indicate antenna port information of the PTRS (for example, the antenna port information herein includes the port number of the antenna port);
  • PTRS pattern indicates the DMRS pattern; or
  • PTRS port group indicates information of the PTRS antenna port group.
  • the first indication information may also be physical layer signaling DCI and high layer signaling.
  • the physical layer signaling DCI specifically indicates which group of data resource mapping indication information used by the RRC configuration.
  • the identifier information for example, pdsch-RE-MappingConfigId
  • the data resource mapping indication information configured in the RRC signaling may be indicated by a bit mapped by the data resource in the DCI.
  • Table 2 illustrates the data resource mapping and quasi-co-location indication fields by 2 bits.
  • Data resource mapping and quasi-co-location indication field (bit value) description 00 Identification of the data resource mapping indication information of the RRC configuration 1 01 Identification of the data resource mapping indication information of the RRC configuration 2 10 Identification of the data resource mapping indication information of the RRC configuration 3 11 Identification of the data resource mapping indication information of the RRC configuration 4
  • the identifier information of the data resource mapping indication information is the identifier 1, and the bit value of the data resource mapping and the quasi-co-location indication field in the DCI is “00”, and the DCI indication identifier 1 may be determined.
  • the phase tracking information of the phase-track resource of the reference signal can further determine that the relevant information is PTRS ports ENUMERATED ⁇ 7,8,9,10,11,12,13,14,spare1 ⁇ , and/or PTRS pattern ENUMERATED ⁇ pattern 1,pattern 2 ⁇ ; or PTRS port group ENUMERATED ⁇ group number 1, group number 2, ... ⁇ .
  • the receiving end acquires the time-frequency resource location of at least two groups of PTRSs in the data resource mapping indication information, that is, the data is not mapped to the time-frequency resource location of the second DMRS. That is, data is not performed on the time-frequency resource location of the second DMRS.
  • the terminal device sends the first indication information according to the network device 1 (or the network device 2), and determines the time-frequency resource location of the at least two groups of PTRSs in the resource mapping indication information, so that the data is not mapped to the second DMRS.
  • the location of the time-frequency resource That is, data is not performed on the time-frequency resource location of the second DMRS.
  • the network device 1 and the network device 2 send a data signal to the terminal device, and perform rate matching on the data signal to be sent, that is, the data signal is not mapped to the time-frequency resource location of the PTRS indicated by the first indication information.
  • the data signal is mapped to a location of other time-frequency resources than the time-frequency resource location of the PTRS indicated by the first indication information.
  • the first indication information may include first information and second information, where the first information is used to determine a subcarrier occupied by the PTRS, and second The information is used to determine the symbol occupied by the PTRS.
  • the first information may include at least one of the following: the sending enable information of the PTRS, the indication information of the DMRS port associated with the antenna port of the PTRS in the DMRS Port group, the indication information of the DMRS port group, or the frequency domain density of the PTRS. Indicates the association relationship with the scheduling bandwidth threshold.
  • the second information may include indication information of a relationship between a time domain density of the PTRS and an MCS threshold.
  • the terminal device may determine, according to the first information sent by the network device 1 (or the network device 2), the subcarrier mapping set of the PTRS of the network device 1 (the network device 2), that is, the network device 1 (or the network device) 2) A collection of subcarriers that may be occupied.
  • the set of subcarrier mappings of the PTRS of the network device 1 (or the network device 2) may include: (all possible) subcarriers at a frequency domain density corresponding to a maximum scheduling bandwidth that the network device 1 schedules to the terminal device. For the relationship between the scheduling bandwidth and the frequency domain density, refer to the description of the PTRS frequency domain density in the following content, which will not be described here.
  • the terminal device may determine, according to the second information sent by the network device 1 (or the network device 2), a symbol mapping set of the PTRS of the network device 1 (or the network device 2), that is, the network device 1 (or the network device 2) may A collection of symbols that will be occupied.
  • the symbol mapping set of the PTRS of the network device 1 (or the network device 2) may include: (all possible) subcarriers in the time domain density corresponding to the maximum MCS scheduled by the network device 1 to the terminal device. For the relationship between the MCS and the time domain density, reference may be made to the description of the PTRS time domain density in the following content, which will not be described here.
  • the network device and the terminal device perform rate matching of the foregoing PTRS.
  • the number of DCIs that need to be blindly detected by the UE or the number of DCIs that need to be blindly detected may be configured by the network device through RRC signaling to determine whether the current is an NCJT transmission, and then determine whether to use the foregoing method to rate the location of the PTRS. match.
  • whether the current NCJT transmission is currently indicated by the displayed signaling (physical layer DCI signaling or DCI signaling) determines whether the location of the PTRS is rate matched using the above method.
  • NCJT transmission is currently performed by the number of indicated QCL relationships of the DCI signaling, and further determine whether to perform rate matching on the location of the PTRS using the above method.
  • the method for determining the NCJT is not limited in this application.
  • the network device 1 and the network device 2 may also send second indication information to the terminal device respectively, and refer to S201A and S201B.
  • the second indication information sent by the network device 1 (or the network device 2) is used to indicate time-frequency resources occupied by the PTRS from the network device 1 (or the network device 2).
  • the second indication information sent by the network device 1 and the network device 2 respectively can be used to indicate the location of the time-frequency resources occupied by the at least two groups of PTRS mentioned in the embodiment of FIG. 14 .
  • the PTRS from the network device 1 and the PTRS from the network device 2 do not have a QCL relationship.
  • the time domain density of PTRS and the method of determining the frequency domain density will be described below.
  • the time domain density of the PT-RS may be related to at least one of a Cyclic Prefix (CP) type, a subcarrier spacing, and a modulation order.
  • CP Cyclic Prefix
  • the time domain density of the PT-RS is corresponding to at least one of a CP type, a subcarrier spacing, and a modulation order.
  • Different CP types or subcarrier spacing or modulation orders correspond to different time domain densities.
  • the corresponding relationship may be predefined by a protocol, or may be configured by a network device by using high layer signaling, such as RRC signaling.
  • the time domain density of the PT-RS may include the following: the PT-RS may be continuously mapped on each symbol of the PUSCH (or PDSCH), or may be on every two symbols of the PUSCH (or PDSCH). Once mapped, it can also be mapped once every 4 symbols of the PUSCH (or PDSCH).
  • the time domain density of the PT-RS can be determined according to the subcarrier spacing and the modulation order.
  • one or more modulation order thresholds may be configured by pre-defined or higher layer signaling, and all modulation orders between adjacent two modulation order thresholds Corresponding to the same PT-RS time domain density, as shown in Table 3.
  • MCS_1, MCS_2, and MCS_3 are modulation order thresholds, and "1", "1/2", and "1/4" in the time domain density refer to the three time domain densities shown in FIG. 1, respectively.
  • the time domain density of the PT-RS may be determined according to a modulation order threshold interval in which the actual modulation order MCS falls.
  • a modulation order threshold interval in which the actual modulation order MCS falls.
  • the examples are merely illustrative of the embodiments of the invention and should not be construed as limiting.
  • different subcarrier spacings may correspond to different modulation order thresholds. That is to say, for different subcarrier spacings, different correspondence tables of modulation order thresholds and time domain densities can be configured.
  • the respective modulation order thresholds of different subcarrier intervals may be predefined by a protocol, or may be configured by a network device by using high layer signaling (for example, RRC signaling).
  • high layer signaling for example, RRC signaling
  • a default subcarrier spacing (denoted as SC_1), such as 15 kHz, and one or more default thresholds corresponding to the default subcarrier spacing may be configured by protocol pre-defined or higher layer signaling. (indicated as MCS').
  • MCS_offset which is an integer
  • MCS_offset may be configured by protocol pre-defined or higher layer signaling.
  • the actual modulation order MCS plus the modulation order offset value MCS_offset may be used to determine the time domain density of the PT-RS.
  • the examples are merely illustrative of the embodiments of the invention and should not be construed as limiting.
  • the default subcarrier spacing (represented as SCS_1) may be configured by protocol pre-defined or higher layer signaling, and one or more default modulation order thresholds corresponding to the default subcarrier spacing. (indicated as MCS').
  • MCS' the default modulation order thresholds corresponding to the default subcarrier spacing.
  • the actual modulation order MCS and the default modulation order threshold MCS' may be used to determine which default modulation order threshold interval the MCS falls in, and then the default modulation order gate is utilized.
  • the time domain density corresponding to the limit interval is multiplied by the scaling factor ⁇ to determine the actual time domain density of the PT-RS.
  • the actual modulation order MCS falls within [MCS_2, MCS_3] at the non-default subcarrier spacing of 120 Hz
  • the examples are merely illustrative of the embodiments of the invention and should not be construed as limiting.
  • between at least one of the subcarrier spacing and the modulation order and the time domain density of the PT-RS may be configured by protocol pre-defined or higher layer signaling (eg, RRC signaling). Correspondence relationship.
  • the time domain density of the PT-RS may be configured by protocol pre-defined or higher layer signaling: the PT-RS is continuously mapped on each symbol of the PUSCH (or PDSCH). .
  • PT-RS can be used to assist Doppler frequency offset estimation in a high speed and large delay spread scenario.
  • the frequency domain density of the PT-RS may be related to at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order. That is to say, the total number of subcarriers L PT-RS mapped by the PT-RS in the user scheduling bandwidth may be related to at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order.
  • the frequency domain density of the PT-RS has a corresponding relationship with at least one of a CP type, the user scheduling bandwidth, a subcarrier spacing, and a modulation order.
  • a CP type the user scheduling bandwidth
  • a subcarrier spacing a subcarrier spacing
  • a modulation order Different CP types or the user scheduling bandwidth or subcarrier spacing or modulation order correspond to different frequency domain densities.
  • the corresponding relationship may be predefined by a protocol, or may be configured by a network device by using high layer signaling, such as RRC signaling.
  • one or more scheduling bandwidth thresholds may be configured by using predefined or higher layer signaling, and all scheduling bandwidths between adjacent two scheduling bandwidth thresholds correspond to the same PT.
  • -RS frequency domain density as shown in Table 5.
  • the BW_1, BW_2, BW_3, BW_4, and BW_5 are the scheduling bandwidth thresholds, and the number of resource blocks included in the scheduling bandwidth of the scheduling bandwidth threshold may be represented by the frequency domain span corresponding to the scheduling bandwidth, which is not limited herein.
  • the frequency domain density "1/2" indicates that the PT-RS occupies one subcarrier per 2 resource blocks.
  • the meanings of the frequency domain density "1/4", "1/8", and "1/16" can be analogized and will not be described again.
  • different subcarrier spacings may correspond to different scheduling bandwidth thresholds. That is to say, for different subcarrier spacings, different correspondence table between scheduling bandwidth threshold and time domain density can be configured.
  • the scheduling bandwidth threshold corresponding to each of the different subcarrier intervals may be predefined by a protocol, or may be configured by the network device by using high layer signaling (for example, RRC signaling).
  • a default subcarrier spacing (represented as SCS_1), such as 15 kHz, may be configured by protocol pre-defined or higher layer signaling, and one or more default scheduling bandwidth gates corresponding to the default subcarrier spacing. Limit (expressed as BW').
  • the actual scheduling bandwidth BW plus the scheduling bandwidth offset value BW_offset may be used to determine the frequency domain density of the PT-RS.
  • the frequency domain density of the PT-RS is 1. If the actual modulation order BW plus BW_offset falls within the interval [BW_2, BW_3], the frequency domain density of the PT-RS is 1/2.
  • a default subcarrier spacing (represented as SCS_1) may be configured by protocol pre-defined or higher layer signaling, and one or more default scheduling bandwidth thresholds corresponding to the default sub-carrier spacing ( Expressed as BW').
  • the actual scheduling bandwidth BW and the default scheduling bandwidth threshold BW' may be used to determine which default scheduling bandwidth threshold interval the BW falls in, and then the default scheduling bandwidth threshold interval is used.
  • the frequency domain density is multiplied by the scaling factor ⁇ to determine the actual frequency domain density of the PT-RS.
  • the present application also provides another signal transmission method.
  • the network device may configure the terminal device to send a sounding reference signal.
  • a sounding reference signal (SRS) is a reference signal used to measure an upstream channel.
  • the network device performs uplink channel measurement based on the SRS sent by the terminal device to obtain channel state information (CSI) of the uplink channel, so as to facilitate scheduling of uplink resources.
  • CSI channel state information
  • the network device can also obtain the downlink CSI by measuring the SRS, that is, first obtain the uplink CSI, and then determine the downlink CSI according to the channel reciprocity.
  • an SRS signal supporting a two-transmission (1T2R) terminal device is switched between different antennas.
  • the uplink transmission of the terminal device can only be transmitted by one antenna or one port at the same time, and the downlink reception can be received by two antennas. Therefore, the network device cannot obtain the downlink 2 receiving antenna based on the single antenna SRS. Channel.
  • the terminal equipment In order to obtain the channels of all downlink antennas, the terminal equipment must transmit SRSs at different times on multiple antennas, that is, SRS transmission is performed by means of SRS antenna switching.
  • Step 1 The network device sends the SRS configuration information to the terminal device.
  • the number of antenna ports indicated in the antenna port information needs to be no greater than the number of antennas that the terminal device can simultaneously perform uplink transmission.
  • the network device configures the SRS period, and the SRS period may be an absolute time, such as 1 ms, 0.5 ms, 10 ms, etc., and the network device indicates the identifier corresponding to the period by signaling. It is also possible to configure relative time, such as the number of time slots, such as 1 time slot, 2 time slots, and further, a period of less than 1, for example 0.5 time slots, can be configured to enable multiple transmissions of the SRS in one time slot.
  • the terminal device needs to report the maximum number of antennas that can be sent at the same time in message three (Msg3) or higher layer signaling, such as RRC signaling.
  • Msg3 message three
  • RRC Radio Resource Control
  • the network device sends signaling to the terminal device, where the signaling is used to notify the terminal device to send the SRS in the manner of SRS antenna switching, or notify the terminal device to support the antenna selection function.
  • Step 2 The terminal device transmits the SRS on the v antennas according to the configuration information of the network device, and sends the SRS by using u ports or u antennas at the same time.
  • the specific solution is as follows:
  • the identifier of the antenna can be recorded as a(n SRS ), where n SRS is determined according to the number of times the uplink reference signal is sent, or according to the frame number, subframe number, slot number, symbol number where the current SRS is located, At least one of the number of symbols of the resources of the SRS and the period of the SRS is determined, or n SRS represents a count of the SRSs transmitted this time for a period of time. For example, n SRS is the number of times or times the uplink reference signal is transmitted minus 1, or n SRS is a count of the SRS time domain position in a cycle of one frame or one frame number. For example, in LTE, n SRS is defined as:
  • N SP is the number of downlink-to-uplink handovers in a frame
  • n f is the frame number
  • n s is the slot number in the frame
  • T SRS is the period of the SRS
  • T offset is based on the symbol position and SRS in the special subframe. The number of symbols is determined
  • T offset_max is the maximum value of T offest . It can be seen that the n SRS in the calculation formula is the count of all the positions of the SRS that satisfy the SRS period in the period of 0 to 1023 of one frame number.
  • K is the total number of hops for frequency hopping.
  • the following table gives the relationship between the antenna port and the number of transmissions and the bandwidth of the transmission:
  • the terminal equipment transmits the SRS with the antennas 0 and 1 at the first frequency hopping position, and the second transmission, the terminal equipment transmits the SRS with the antennas 2 and 3 at the second frequency hopping position, and the third In the case of secondary transmission, the terminal equipment transmits the SRS with the antennas 2 and 3 at the first frequency hopping position, and the fourth transmission, the terminal equipment transmits the SRS with the antennas 0 and 1 at the second frequency hopping position.
  • the solution can be applied to the case where the u transmit antennas have 2u receive antennas, and (1) and (2) can be changed to be no frequency hopping:
  • an expression of a correspondence between a(n SRS ) and n SRS may be:
  • the value of the signaling may be RRC signaling or MAC CE signaling or DCI.
  • Scheme 2 The identifier of the antenna can be written as a(n SRS ), where n SRS can be defined in the scheme 1.
  • K is the total number of hops for frequency hopping.
  • the following table gives the relationship between the antenna port and the number of transmissions and the bandwidth of the transmission:
  • the terminal equipment transmits the SRS with the antennas 0 and 1 at the first frequency hopping position, and the second transmission, the terminal equipment transmits the SRS with the antennas 2 and 3 at the second frequency hopping position, and the third In the case of secondary transmission, the terminal equipment transmits the SRS with the antennas 2 and 3 at the first frequency hopping position, and the fourth transmission, the terminal equipment transmits the SRS with the antennas 0 and 1 at the second frequency hopping position.
  • the program of formula (8) The correspondence with a(n SRS ) can be expressed in a table or other formula, and no limitation is made here.
  • the corresponding relationship with a(n SRS ) may also be a value configured by the network device through signaling, and the signaling may be RRC signaling or MAC CE signaling or DCI.
  • the solution can be applied to the case where the u transmit antennas have 2u receive antennas, and (8) can be changed to:
  • the correspondence with a(n SRS ) can be expressed in a table or other formula, and no limitation is made here.
  • the corresponding relationship with a(n SRS ) may also be a value configured by the network device through signaling, and the signaling may be RRC signaling or MAC CE signaling or DCI.
  • the solution is not limited to the corresponding relationship between a(n SRS ) and n SRS in the above formula (6), (7).
  • the network device configures, by using SRS configuration information, multiple SRS resources for the terminal device, for example, the multiple SRS resources form one SRS resource group, where the network The device notifies the terminal device to send the SRS in the manner of SRS antenna switching, or informs the terminal device to support the antenna selection function. It can be understood as configuring the SRS resource group to transmit the SRS in an antenna switching manner.
  • At least one SRS resource in the SRS resource group is used to send the SRS by using at least one different antenna.
  • all the SRS resources in the SRS resource group may use different antennas to send the SRS.
  • the SRS resource has a corresponding relationship with the antenna for transmitting the SRS on the SRS resource.
  • one SRS resource group may include two SRS resources, and the first SRS resource corresponds to two antennas.
  • antenna 0, 1 the second SRS resource corresponds to the other two antennas, for example, antenna 2, 3.
  • the time-frequency position mapped by the SRS resource can be determined according to the determination of the transmitting antenna in the SRS antenna switching transmission scheme, for example, the above scheme 1 2, for example, when it is determined that the transmitting antenna is 0, 1, the transmitted SRS belongs to the first SRS resource, such as SRS resource 0, and when it is determined that the transmitting antenna is 2, 3, the transmitted SRS belongs to another SRS resource, For example, SRS resources 1.
  • SRS antenna switching transmission scheme can be used to determine the antenna used by the SRS, the same calculation formula can be used to determine the number of the SRS resource or the SRS resource, such as according to equation (1) ( 2)
  • the method for determining SRS resources is:
  • b(n SRS ) is an identifier or relative identifier of the SRS resource, or an identifier in the SRS resource group.
  • the n SRS is determined by the total number of times the SRS is sent on the SRS resource in the SRS resource group, or according to the frame number, the subframe number, the slot number, and the slot number of the SRS resource in the current SRS resource group.
  • the symbol number, the number of symbols of the resources of the SRS, and the period of the SRS are determined, or the n SRS represents a count of the SRSs currently transmitted in all the SRS resources in the SRS resource group for a period of time.
  • the SRS is an SRS signal on all SRS resources in the SRS resource group.
  • the n SRS is not an SRS count in one of the SRS resources in the SRS resource group, but a count of SRSs on all SRS resources in the SRS resource group.
  • the n SRS may also be an SRS count in one of the SRS resources in the SRS resource group, that is, the n SRS is determined by the number of times the SRS is sent on one SRS resource in the SRS resource group, or according to the current At least one of a frame number, a subframe number, a slot number, a symbol number, a symbol number of a resource of the SRS, and a period of the SRS of one SRS resource in the SRS resource group is determined, or n SRS indicates that the period is within a period of time The count of SRSs sent this time in one SRS resource in the SRS resource group.
  • the SRS is an SRS signal on one SRS resource in the SRS resource group.
  • the time domain and the frequency domain resource of the multiple SRS resources in the SRS resource group can be configured. Different SRS resources are used to measure the same frequency domain resource, and different SRS resources correspond to different antennas or antenna groups to implement SRS. Switch the transmit antenna between different SRS resources.
  • the SRS resource 0 is configured to correspond to the antenna 0, 1
  • the SRS resource 1 corresponds to the antenna 2, 3.
  • the SRS resource group includes SRS resource 0 and SRS resource 1, and the network device configures the SRS resource 0 and the time-frequency location of the resource 1, and indicates the SRS resource of the terminal device in the SRS resource group, or the SRS resource 0 and the SRS resource 1 Send SRS on.
  • switching between different SRS resources is implemented to implement SRS transmission between all antennas.
  • the scheme can further support antenna switching of terminal devices of u Tx (transmitting) antennas v Rx (receiving) antennas, where u>1 or v>2, and u ⁇ v.
  • FIG. 16 illustrates a wireless communication system, a terminal, and a network device.
  • the wireless communication system 10 includes a first device 400 and a second device 500.
  • the first device 400 may be the terminal 200 in the embodiment of FIG. 4, and the second device 500 may be the network device 300 in the embodiment of FIG. 5 in the uplink transmission process.
  • the first device 400 may be the network device 300 in the embodiment of FIG. 5, and the second device 500 may be the terminal 200 in the embodiment of FIG.
  • the wireless communication system 10 can be the wireless communication system 100 depicted in FIG. Described separately below.
  • the first device 400 may include a processing unit 401 and a transmitting unit 403. among them:
  • the processing unit 401 can be configured to map the first reference signal on the first symbol; the first reference signal is used for phase tracking.
  • the first symbol includes a symbol of a bearer data signal before the second symbol in the time domain unit, and the second symbol refers to a first symbol that carries the demodulation reference signal in the time domain unit, or The second symbol refers to a plurality of consecutive symbols in the time domain unit, the consecutive plurality of symbols including a first symbol carrying a demodulation reference signal;
  • the sending unit 403 can be configured to send the first reference signal to the second device 500.
  • the processing unit 401 may be configured to map the PTRS according to the PTRS time domain mapping rule according to the foregoing Embodiments 1 to 3, and may refer to the foregoing Embodiment 1 to Embodiment 3, and details are not described herein again.
  • the second device 500 may include a receiving unit 501 and a processing unit 503. among them:
  • the receiving unit 501 is configured to receive a first reference signal sent by the first device, where the first reference signal is used for phase tracking.
  • the first reference signal is mapped on the first symbol, the first symbol includes a symbol of a bearer data signal before the second symbol, and the second symbol refers to a bearer demodulation reference signal in the time domain unit.
  • the first symbol, or the second symbol refers to a plurality of consecutive symbols in the time domain unit, the consecutive plurality of symbols including a first symbol carrying a demodulation reference signal;
  • the processing unit 503 is configured to perform phase tracking by using the first reference signal.
  • FIG. 17 illustrates a wireless communication system, a terminal, and a network device.
  • the wireless communication system 20 includes a network device 600 and a terminal device 700.
  • the network device 600 may be the network device 300 in the embodiment of FIG. 5, and the terminal device 700 may be the terminal 200 in the embodiment of FIG.
  • Wireless communication system 20 may be the wireless communication system 100 depicted in FIG. Described separately below.
  • the network device 600 may include a processing unit 601 and a transmitting unit 603. among them:
  • the processing unit 601 is configured to generate first indication information, where the first indication information indicates a location of time-frequency resources occupied by at least two groups of first reference signals, and an antenna port associated with each of the at least two groups of first reference signals is not Co-located
  • the sending unit 603 is configured to send the first indication information.
  • the sending unit 603 is further configured to send a data signal, where the data signal is not mapped on a time-frequency resource occupied by the at least two sets of first reference signals.
  • the terminal device 700 may include a receiving unit 701 and a processing unit 703. among them:
  • the receiving unit 701 is configured to receive first indication information, where the first indication information indicates a location of time-frequency resources occupied by at least two groups of first reference signals, and an antenna port associated with each of the at least two groups of first reference signals is not Co-located
  • the processing unit 703 is configured to determine, according to the first indication information, a time-frequency resource occupied by the at least two groups of first reference signals;
  • the receiving unit 701 is further configured to receive a data signal, where the data signal is not mapped on a time-frequency resource occupied by the at least two groups of first reference signals.
  • each functional unit included in the terminal device 700 can be referred to the embodiment of FIG. 14 or FIG. 15 , and details are not described herein again.
  • FIG. 18 is a schematic structural diagram of a device provided by the present application.
  • apparatus 80 can include a processor 801 and one or more interfaces 802 coupled to processor 801.
  • device 80 may also include a memory 803.
  • device 80 can be a chip. among them:
  • the processor 801 can be used to read and execute computer readable instructions.
  • the processor 801 can mainly include a controller, an operator, and a register.
  • the controller is mainly responsible for instruction decoding, and sends a control signal for the operation corresponding to the instruction.
  • the operator is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logic operations, as well as performing address operations and conversions.
  • the register is mainly responsible for saving the register operands and intermediate operation results temporarily stored during the execution of the instruction.
  • the hardware architecture of the processor 801 may be an Application Specific Integrated Circuits (ASIC) architecture, a MIPS architecture, an ARM architecture, or an NP architecture.
  • the processor 801 can be single core or multi-core.
  • the memory 803 can be used to store program code containing computer-readable instructions and can also be used to store input/output data of the processor 801.
  • the input/output interface 802 can be used to input data to be processed to the processor 801, and can output the processing result of the processor 801 to the outside.
  • the interface 802 can be a General Purpose Input Output (GPIO) interface, and can be connected to multiple peripheral devices (such as a display (LCD), a camera, a radio frequency module, etc.).
  • GPIO General Purpose Input Output
  • the interface 802 may also include a plurality of independent interfaces, such as an Ethernet interface, an LCD interface, a Camera interface, etc., responsible for communication between different peripheral devices and the processor 801, respectively.
  • the processor 901 can be used to invoke the implementation program of the signal transmission method provided by the embodiment of FIG. 8 on the first device side or the implementation program of the embodiment of FIG. 14 or FIG. 15 on the network device side from the memory, and execute the program. Contained instructions.
  • the interface 902 can be used to output the execution result of the processor 901.
  • processor 801 and the interface 802 can be implemented by using a hardware design or a software design, and can also be implemented by a combination of software and hardware, which is not limited herein.
  • FIG. 19 is a schematic structural diagram of a device provided by the present application.
  • apparatus 90 can include a processor 901 and one or more interfaces 902 coupled to processor 901.
  • the device 90 may further include a memory 903.
  • device 90 can be a chip. among them:
  • the processor 901 can be used to read and execute computer readable instructions.
  • the processor 901 may mainly include a controller, an operator, and a register.
  • the controller is mainly responsible for instruction decoding, and sends a control signal for the operation corresponding to the instruction.
  • the operator is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logic operations, as well as performing address operations and conversions.
  • the register is mainly responsible for saving the register operands and intermediate operation results temporarily stored during the execution of the instruction.
  • the hardware architecture of the processor 901 may be an Application Specific Integrated Circuits (ASIC) architecture or the like.
  • the processor 901 can be single core or multi-core.
  • the memory 903 can be used to store program code containing computer-readable instructions and can also be used to store input/output data of the processor 901.
  • the input/output interface 902 can be used to input data to be processed to the processor 901, and can output the processing result of the processor 901 to the outside.
  • the processor 901 can be used to call the implementation program of the signal transmission method provided by the embodiment of FIG. 8 on the second device side from the memory or the implementation program of the embodiment of FIG. 14 or FIG. 15 on the terminal device side, and execute the program. Contained instructions.
  • the interface 902 can be used to output the execution result of the processor 901.
  • processor 901 and the interface 902 can be implemented by using a hardware design or a software design, and can also be implemented by a combination of software and hardware, which is not limited herein.
  • the implementation of the technical solution provided by the present application ensures that the data channel mapped on the symbol before the DMRS also has a PT-RS mapping, thereby ensuring phase noise estimation performance.
  • the program can be stored in a computer readable storage medium, when the program is executed
  • the flow of the method embodiments as described above may be included.
  • the foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.

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  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un procédé de transmission de signal. Le procédé comprend les étapes suivantes : un premier dispositif envoie à un second dispositif un premier signal de référence, le premier signal de référence étant utilisé pour un suivi de phase; et le premier signal de référence est mappé à un premier symbole, le premier symbole comprenant un symbole portant un signal de données devant un second symbole, le second symbole indiquant au moins un symbole successif portant un DMRS, et ledit au moins un symbole comprenant un premier symbole portant le DMRS. Le procédé de la présente invention peut assurer la présence d'un mappage de signal de référence de suivi de phase (PT-RS) dans un canal de données mappé à un symbole devant un DMRS, assurant ainsi des performances d'estimation de bruit de phase.
PCT/CN2018/080387 2017-03-24 2018-03-24 Procédé, appareil et système de transmission de signal WO2018171783A1 (fr)

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BR112019019840A BR112019019840A2 (pt) 2017-03-24 2018-03-24 método de transmissão de sinal, aparelho, e sistema
JP2019552548A JP7061619B2 (ja) 2017-03-24 2018-03-24 信号送信方法、装置、およびシステム
KR1020197030983A KR102305312B1 (ko) 2017-03-24 2018-03-24 신호 전송을 위한 방법, 장치, 및 시스템
EP18772285.5A EP3605977B1 (fr) 2017-03-24 2018-03-24 Procédé, appareil et système de transmission de signal
CA3057550A CA3057550A1 (fr) 2017-03-24 2018-03-24 Procede, appareil et systeme de transmission de signal
US16/580,773 US20200022172A1 (en) 2017-03-24 2019-09-24 Signal transmission method, apparatus, and system

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CN201710184763.X 2017-03-24
CN201710184763 2017-03-24
CN201710814891.8A CN108632179B (zh) 2017-03-24 2017-09-11 信号传输方法、装置及系统
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WO2021019743A1 (fr) * 2019-07-31 2021-02-04 株式会社Ｎｔｔドコモ Terminal
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