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WO2018133103A1 - Procédé de modulation numérique, procédé et appareil de transmission de données et système de communication - Google Patents

Procédé de modulation numérique, procédé et appareil de transmission de données et système de communication Download PDF

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Publication number
WO2018133103A1
WO2018133103A1 PCT/CN2017/072221 CN2017072221W WO2018133103A1 WO 2018133103 A1 WO2018133103 A1 WO 2018133103A1 CN 2017072221 W CN2017072221 W CN 2017072221W WO 2018133103 A1 WO2018133103 A1 WO 2018133103A1
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Prior art keywords
information
symbol
probability
occurrence
modulated
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PCT/CN2017/072221
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English (en)
Chinese (zh)
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WO2018133103A9 (fr
Inventor
杨凡
王昕�
周华
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富士通株式会社
杨凡
王昕�
周华
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Priority to PCT/CN2017/072221 priority Critical patent/WO2018133103A1/fr
Publication of WO2018133103A1 publication Critical patent/WO2018133103A1/fr
Publication of WO2018133103A9 publication Critical patent/WO2018133103A9/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits

Definitions

  • the present invention relates to the field of communications, and in particular, to a digital modulation method, a data transmission method and device thereof, and a communication system.
  • Digital modulation is an important method of modern communication. It has many advantages compared with analog modulation. For example, digital modulation has better anti-interference performance, stronger anti-channel loss, and better security. It can be used in digital transmission systems. Use error control technology to support complex signal conditions and processing techniques such as source coding, encryption, and equalization.
  • the main digital modulation methods include traditional ASK (Amplitude Shift Keying) and multi-level quadrature Amplitude Modulation (mQAM), frequency shift keying (FSK, Frequency Shift Keying), phase shift. PSK (Phase Shift Keying) and multiphase phase shift keying (mPSK, multiple phase Shift Keying).
  • mQAM and Binary Phase Shift Keying (BPSK) are widely used in modern communications, such as Long Term Evolution (LTE) communication and Wideband Code Division Multiple Access (WCDMA) communication. Wait.
  • Their symbol (constellation point) design is based on the assumption that 0 and 1 are equal probability distributions, under which they achieve a good balance between complexity and performance.
  • an embodiment of the present invention provides a digital modulation method, a data transmission method, and a device thereof.
  • a digital modulation method comprising: mapping a to-be-modulated information including first information into a symbol having a first amplitude, and mapping a to-be-modulated information including the second information For the symbol having the second amplitude, the probability of occurrence of the first information is less than the probability of occurrence of the second information, and the sum of the probability of occurrence of the first information and the probability of occurrence of the second information is 1, and the first amplitude is greater than the second amplitude.
  • a data transmission method comprising: modulating a modulation information according to the foregoing digital modulation method to obtain a modulation symbol; and transmitting the modulation symbol.
  • a digital modulation apparatus comprising:
  • mapping unit that maps information to be modulated into one symbol
  • the mapping unit maps the first information into a symbol having a first amplitude, and if the information to be modulated includes the second information, the mapping unit The second information is mapped to a symbol having a second amplitude,
  • the sum of the probability of occurrence of the first information and the probability of occurrence of the second information is 1, and the probability of occurrence of the first information is less than the probability of occurrence of the second information, the first amplitude being greater than The second amplitude.
  • a data transmission apparatus comprising:
  • a first modulating unit that modulates the information to be modulated according to the method described in the foregoing first aspect to obtain a modulation symbol
  • a transmitting unit that transmits the modulation symbol.
  • a network device wherein the network device comprises the apparatus of the foregoing third or fourth aspect.
  • a user equipment wherein the user equipment comprises the apparatus of the third aspect or the fourth aspect.
  • a computer readable program wherein the program causes the digital modulation device or network device when the program is executed in a digital modulation device or a network device or a user equipment Or the user equipment performs the digital modulation method of the first aspect of the embodiments of the present invention.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a digital modulation device or a network device or user equipment to perform the first aspect of an embodiment of the present invention The digital modulation method described.
  • a computer readable program wherein the program causes the data transmission device or network device when the program is executed in a data transmission device or a network device or a user device Or the user equipment performs the data transmission method according to the first aspect of the embodiments of the present invention.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a data transmission device or a network device or user equipment to perform the first aspect of an embodiment of the present invention The data transmission method described.
  • the beneficial effects of the embodiments of the present invention are that, by the method, device and system of the embodiments of the present invention, digital modulation can be performed with unequal probability of 0 and 1, and the modulation performance is optimized.
  • FIG. 1 is a schematic diagram of a subframe structure type 1 of an LTE system
  • FIG. 2 is a schematic diagram of a subframe structure type 2 of an LTE system
  • FIG. 3 is a schematic diagram of a possible subframe structure of an NR system
  • FIG. 5 is a constellation diagram of a digital modulation method according to Embodiment 1;
  • FIG. 6 is another constellation diagram of a digital modulation method according to Embodiment 1;
  • FIG. 9 is a schematic diagram of a processing procedure of a PHICH channel
  • FIG. 10 is a schematic diagram of a processing procedure of a PUCCH format 1/1a/1b channel
  • FIG. 11 is a schematic diagram of a processing procedure of a PUCCH format 2a/2b channel
  • FIG. 12 is a schematic diagram of an uplink control channel of an NR system
  • Figure 13 is a schematic diagram of a data transmission method of Embodiment 2.
  • 15 is a schematic diagram of another embodiment of resource mapping
  • 16 is a schematic diagram of still another embodiment of resource mapping
  • Figure 17 is a schematic diagram of a digital modulation device of Embodiment 3.
  • Figure 18 is a schematic diagram of a data transmission device of Embodiment 4.
  • FIG. 19 is a schematic diagram of a transmitting unit of the data transmission device of Embodiment 4.
  • FIG. 20 is a schematic diagram of a network device of Embodiment 5.
  • FIG. 21 is a schematic diagram of a user equipment of Embodiment 6;
  • Figure 22 is a schematic diagram of a communication system of the seventh embodiment.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising,” “comprising,” “having,” “said,” or “said” are meant One or more other features, elements, elements or components are not excluded or added.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system may be performed according to any phase of the communication protocol, and may include, for example but not limited to, the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future. 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.
  • the term "network device” refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device.
  • the network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.
  • BS base station
  • AP access point
  • TRP transmission and reception point
  • MME mobility management entity
  • Management Entity gateway
  • server Radio Network Controller
  • BSC Base Station Controller
  • the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a Remote Radio Head (RRH). , Remote Radio Unit (RRU), relay or low power node (eg femto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • base station may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "user equipment” (UE) or “Terminal Equipment” (TE) refers to, for example, a device that accesses a communication network through a network device and receives a network service.
  • the user equipment may be fixed or mobile and may also be referred to as a mobile station (MS, Mobile Station), Terminal, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station (station), and so on.
  • the user equipment may include, but is not limited to, a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, Cordless phones, smart phones, smart watches, digital cameras, and more.
  • a cellular phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem Wireless Fidelity
  • a wireless communication device a handheld device
  • a machine type communication device a laptop computer
  • Cordless phones smart phones, smart watches, digital cameras, and more.
  • the user equipment may also be a machine or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, In-vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, and the like.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • FIG. 1 is a schematic diagram of a subframe structure type 1 of an LTE system
  • FIG. 2 is a schematic diagram of a subframe structure type 2 of an LTE system
  • FIG. 3 is a schematic diagram of a possible subframe structure of a new radio (NR, New Radio) system.
  • NR New Radio
  • FIG. 3 shows that the subframe structure of the NR system is still under discussion so far, only one possible NR subframe structure is listed in the embodiment of the present invention.
  • an uplink, a downlink, and a guard interval are included, and the time basic unit is a slot or a minislot (mini). -slot), a slot or mini-slot can contain one or more symbols.
  • FIG. 4 is a schematic diagram of the method. As shown in FIG. 4, the method includes:
  • Step 401 Map the information to be modulated including the first information into a symbol having a first amplitude, and map the information to be modulated including the second information into a symbol having a second amplitude, where the probability of occurrence of the first information is smaller than that of the second information.
  • the probability of occurrence, the sum of the probability of occurrence of the first information and the probability of occurrence of the second information is 1, and the first magnitude is greater than the second magnitude.
  • the information to be modulated is mapped to a symbol, and the symbol is referred to as a modulation symbol.
  • the information to be modulated may include the first information, or may include the second information, or include the first Information and second information. If the to-be-modulated information includes the first information, the first information may be mapped to have the first A symbol of amplitude, if the information to be modulated contains the second information, the second information may be mapped to a symbol having the second amplitude.
  • the difference between the probability of occurrence of the first information and the probability of occurrence of the second information is different, and the sum of the probability of occurrence of the first information and the probability of occurrence of the second information is 1, and the first The probability of occurrence of the information is less than the probability of occurrence of the second information, and the first amplitude is greater than the second amplitude.
  • information having a relatively low probability of occurrence for example, first information
  • a constellation point symbol
  • information having a high probability of occurrence for example, The second information
  • allocates a constellation point having a lower amplitude for example, the second amplitude
  • the information to be modulated includes the foregoing two types of information as an example, but the embodiment does not limit the information, and each type of information included in the information to be modulated may separately include one or more types of information.
  • the method of the example applies to the case where the probability of occurrence of these two types of information is different.
  • the concept of "class" is only for distinguishing information having different occurrence probabilities, and does not mean that the two types of information differ in function, category, and the like.
  • the information to be modulated is 1-bit information, that is, the information to be modulated has only two possibilities, “0” or “1”, and the “0” and “1” may respectively represent the above.
  • the second information and the first information, the first information (ie, "1") may be mapped to a symbol of magnitude x 1
  • the second information (ie, "0") may be mapped to an amplitude of The sign of x 2 , x 1 >x 2 .
  • x 2 may be a predefined value, for example, 0 or 0.5, etc.
  • x 1 may be a value determined according to x 2 and an occurrence probability of the foregoing first information and an occurrence probability of the foregoing second information.
  • x 1 can be determined according to the following formula:
  • FIG. 5 is a constellation diagram of an example of the present embodiment.
  • the information to be modulated is 2-bit information, that is, the information to be modulated has four possibilities, "00", “01", “10", and "11". If the second information is still indicated by “0", and "1" indicates the first information, the modulation information may include only the first information (corresponding to "11"), or may only include the second information (corresponding to " 00′), may also include both the first information and the second information (corresponding to “01” or “10”), in this embodiment, the two bits of the to-be-modulated information may be mapped to real and imaginary numbers, respectively.
  • FIG. 6 is a constellation diagram of an example of the present embodiment.
  • the QPSK symbol (constellation point) is: [x 2 + x 2 ⁇ j x 1 + x 2 ⁇ j x 1 + x 1 ⁇ j x 2 + x 1 ⁇ j], x 1 and x 2 are determined by the following formula:
  • the QPSK symbol (constellation point) is: [0x x+x ⁇ j x ⁇ j], corresponding to [00,10,11,01], and
  • the digital modulation method of the present embodiment is described by taking the information to be modulated as 1 bit and the information of 2 bits as an example.
  • the present embodiment is not limited thereto, and the information to be modulated is 4 bits or other information.
  • the modulation method is similar to the above two embodiments, and the description thereof will not be repeated here.
  • the above two embodiments are exemplified by the probability that the probability of occurrence of "0" is greater than the probability of occurrence of "1”, but this embodiment is not limited thereto.
  • the first information may also be represented by "0".
  • the to-be-modulated information may be a Hybrid Automatic Repeat reQuest (HARQ) acknowledgement character (ACK, ACKnowledgement, or NACK (Negative ACKnowledgment), referred to as ACK/ NACK), the first information may be data detection failure (NACK) information, and the second information may be data detection success (ACK) information.
  • HARQ Hybrid Automatic Repeat reQuest
  • the digital modulation method of the present embodiment is applicable to the "ACK” A scenario in which the probability of occurrence is greater than the probability of occurrence of "NACK”, such as the URL-LLC (Ultra-Reliable and Low Latency Communications) scenario.
  • URL-LLC Ultra-Reliable and Low Latency Communications
  • HARQ is a technology that combines Forward Error Correction (FEC) and Automatic Repeat ReQuest (ARQ). It is widely used in modern communication systems and is often used with the Cyclic Redundancy Check (CRC).
  • CRC check is a hash function that generates a short fixed-digit check code based on data such as network packets or computer files. It is mainly used to detect or verify errors that may occur after data transmission or storage.
  • the receiving end After the data is sent by the transmitting end, the receiving end performs a CRC check according to the received data. According to the check result, the receiving end feeds back the information of the data detection success (ACK) or the failure (NACK) to the transmitting end, and the transmitting end according to the feedback.
  • the ACK/NACK information determines whether new data is to be sent or old data is resent.
  • Figure 7 illustrates the information exchange process for successful data detection
  • Figure 8 illustrates the information interaction process for data detection failure.
  • the physical channel that the receiving end feeds back the ACK/NACK information to the transmitting end often adopts low-order modulation, such as BPSK or QPSK, BPSK is used when transmitting one-bit ACK/NACK information, and QPSK is used when transmitting two-bit ACK/NACK information. .
  • the correct probability of data packets is often very close to 100%. For example, in a URLG scenario of 5G, the block error rate is on the order of 10 -5 , which means the probability of NACK occurring. It is much smaller than the probability of occurrence of ACK.
  • the ACK/NACK information can be modulated using the BPSK or QPSK digital modulation method based on the appearance probability of “0” and “1” of the present embodiment, and the probability of occurrence of NACK x 2 can be set in advance. , 0 ⁇ - x 2 - ⁇ 1. For example, if the probability of occurrence of NACK is set to 10%, then In actual deployment, the parameter x 2 can be set to a value mutually recognized by both the transmitting and receiving parties as needed.
  • ACK/NACK information is classified into uplink and downlink.
  • the former is transmitted by a Physical Hybrid ARQ Indicator Channel (PHICH), which is transmitted by a Physical Uplink Control CHannel (PUCCH).
  • PHICH Physical Hybrid ARQ Indicator Channel
  • PUCCH Physical Uplink Control CHannel
  • the network device may first repeat 3 times for each HARQ acknowledgment information (1 bit: ACK/NACK corresponding to one BC (Transport Block)) to obtain 3 bits of information, and then use
  • the digital modulation method of the present embodiment (the BPSK modulation method based on the appearance probability of "0" and "1") modulates the 3-bit information, and then uses a length of 4 (for the extended cyclic prefix, the length is 2)
  • the orthogonal sequence is spread and then scrambled using the cell-specific interference sequence to obtain 12 scrambling symbols, as shown in FIG.
  • multiple PHICHs can be mapped to the same resource unit (RE, Resource Element) to add the symbols.
  • RE Resource Element
  • Each PHICH group can be mapped into three Resource Element Groups (REGs), which can be separated by 1/3 downlink system bandwidth. This embodiment does not limit how the 12 symbols are mapped to the corresponding REG, layer matching, precoding, and how to map to the RE.
  • the original constellation point can be directly replaced with the constellation point of the embodiment, as shown in FIG. 5, and Table 1 shows FIG. The real and imaginary parts of the constellation point.
  • x 1 is a value determined according to a predefined value of x 2 , and may also be considered as a predefined value, for example, x 1 may be 4, Wait.
  • the operation of the physical layer is as shown in FIG. 10.
  • the method of this embodiment can be used for modulation, and in specific implementation, the original Some constellation points are replaced by the constellation points of the embodiment.
  • the above table 1 illustrates the real part and the imaginary part of the constellation point shown in FIG. 5, and details are not described herein again.
  • 2 illustrates the real and imaginary parts of the constellation points shown in FIG. 6.
  • the PUCCH format 2a can carry 20-bit Channel State Information (CSI) and 1-bit ACK/NACK information (BPSK modulation) (a scene corresponding to a single cell and a downlink single codeword).
  • the PUCCH format 2b can carry 20-bit CSI information (QPSK modulation) and 2-bit ACK/NACK information (QPSK modulation) (a scenario corresponding to a single cell and a downlink dual codeword).
  • QPSK modulation QPSK modulation
  • QPSK modulation 2-bit ACK/NACK information
  • the method of the embodiment may be used for modulation.
  • the original constellation point may be directly replaced with the constellation point of the embodiment, as shown in FIG. 5 or FIG. 6 .
  • Table 1 above shows the real and imaginary parts of the constellation points shown in Fig. 5.
  • Table 2 above shows the real and imaginary parts of the constellation points shown in Fig. 6, and Table 3 below shows another The form of the constellation point.
  • b(20), ..., b(M bit -1) represents the bit value of the ACK/NACK
  • d(10) represents a constellation point (symbol) on the constellation corresponding to each bit value
  • x 2 0
  • the meaning of x 1 is as described above, and will not be described again here.
  • the ACK/NACK feedback belongs to the control channel, and in the subframe, the uplink control channel is temporally between the guard time and the uplink data channel, as shown in FIG.
  • the 1-bit ACK/NACK feedback information of the uplink ACK/NACK is modulated by the BPSK modulation method based on the appearance probability of "0" and “1” in the present embodiment, and the 2-bit ACK/NACK feedback information of the uplink ACK/NACK is used.
  • the modulation method of the QPSK based on the appearance probability of "0" and “1” of the embodiment is modulated, the modulated symbol is denoted by the symbol y(0), then the y(0) is spread, and finally the spread is performed.
  • the data is mapped to the time-frequency resources of the physical layer according to certain rules. A specific data transmission method will be described in Embodiment 2.
  • the digital modulation method of the present embodiment has been described above by taking the information to be modulated as HARQ ACK/NACK as an example.
  • the present embodiment is not limited thereto, and the digital modulation method of this embodiment is also applicable to other control information.
  • the modulation performance can be guaranteed in the case where the occurrence probabilities of "0" and "1" are not equal.
  • FIG. 13 is a schematic diagram of the method, as shown in Figure 13, the method comprising:
  • Step 1301 Modulate modulation information to obtain a modulation symbol
  • Step 1302 Send the above modulation symbol.
  • the modulation information is modulated by the method of Embodiment 1. Since the modulation method and the information to be modulated have been described in detail in Embodiment 1, the content thereof is incorporated herein. I will not repeat them here.
  • the modulation symbol may be first spread to obtain the spread data, and then the spread data is mapped to the physical layer. Time-frequency resources for transmission.
  • the spreading of the modulation symbols may be divided into two levels.
  • the first stage may multiply the modulation symbols by a sequence of length N1 to obtain a first sequence of length N1; the second stage may A sequence is multiplied by a cyclic shift sequence of length N2 to obtain a second sequence of length N1 ⁇ N2, which is a spread spectrum data, and the second sequence can be divided into N1 groups, each group The length is N2.
  • the sequence of length N1 may be an orthogonal code or a non-orthogonal code.
  • a sequence of length N1 can be used. 0 ⁇ m ⁇ N1.
  • n oc is the sequence index.
  • a cyclic shift sequence of length N2 can be used. 0 ⁇ n cs ⁇ N2-1, 0 ⁇ n ⁇ N2-1.
  • ⁇ is a cyclic shift value.
  • the cyclic shift sequence can be defined as shown in Table 5, but is not limited thereto.
  • Each RE has two indexes k and l, which are frequency and time indices, respectively, representing the sequence number and subcarrier number of the OFDM symbol in which the RE is located.
  • all the data may be mapped to different subcarriers in the same OFDM symbol, where the subcarriers corresponding to each group of the second sequence are continuous in the frequency domain, different.
  • the subcarriers corresponding to the second sequence of the group may be continuous or discontinuous, as shown in FIG.
  • different sets of data may be mapped to different OFDM symbols and different subcarrier sets. As shown in FIG. 15, the second sequence of the four groups is mapped. Four different OFDM symbols and different subcarriers.
  • different sets of data may also be mapped to different OFDM symbols and different subcarrier sets.
  • the second sequence of the four groups is mapped. Four different OFDMs and on the same subcarrier.
  • the modulation may be sent on a dedicated resource. symbol.
  • the dedicated resource here is, for example, a PUCCH1 resource calculated according to the first CCE.
  • the HARQ ACK/NACK is sent on the SR resource instead of the PUCCH 1 resource calculated according to the first CCE. (here we call it ACK/NACK resource) to send. At this time, nothing is sent on the ACK/NACK resource, that is, there is no energy.
  • the network device knows whether the user equipment has sent the SR by comparing the energy detected on the ACK/NACK resource and the SR resource.
  • the HARQ ACK/NACK when the user equipment simultaneously transmits the SR and the HARQ ACK/NACK, the HARQ ACK/NACK is not transmitted on the SR resource, but is transmitted on the PUCCH 1 resource calculated according to the first CCE.
  • the network device can perform corresponding demodulation and energy detection on the ACK/NACK resource and the SR resource, respectively.
  • the foregoing dedicated resource that is, the PUCCH 1 resource calculated according to the first CCE, is only an example, and the embodiment is not limited thereto.
  • the user equipment when the user equipment is in the Discontinuous Transmission (DTX) state, no signal, including data and reference signals, is transmitted on the PUCCH; this is very similar to the PUCCH 1a/1b sending ACK because of the ACK mapping. It is 0, but it should be noted that the reference signal of PUCCH 1a/1b is always transmitted, so the ACK of DTX and PUCCH 1a/1b can be distinguished by detecting the presence or absence of the reference signal.
  • the specific detection method may be implemented by the receiving end (for example, the network device) measuring the power of the time-frequency position where the reference signal is located. When the received power is less than a certain predefined threshold, the DTX may be determined. Otherwise, the DTX state is not indicated.
  • the modulation symbol may be further modulated to each On some of the sub-carriers of the second reference signal symbol of the time slot, as shown in FIG. 11, for transmission. This avoids the problem that when the constellation point of this embodiment contains 0, it is possible to set all the reference signals in one symbol to 0, resulting in inaccurate channel estimation.
  • the index of the partial subcarrier may be predefined, that is, which subcarriers of the second reference signal symbol of each slot are modulated by the modulation symbol in advance.
  • the information to be modulated is HARQ ACK/NACK
  • the HARQ ACK/NACK is transmitted on the PUCCH in PUCCH format 1a or PUCCH format 1b
  • the above modulation symbol may be transmitted by using the maximum allowed power.
  • the power may be set to the maximum allowable value.
  • P PUCCH (i) P CMAX,c (i)".
  • the modulation performance can be guaranteed in the case where the occurrence probabilities of "0" and "1" are not equal.
  • the present embodiment provides a digital modulating device.
  • the principle of the device is similar to that of the first embodiment. Therefore, the specific implementation may refer to the implementation of the method in the first embodiment.
  • the apparatus 1700 includes: a mapping unit 1701, which maps information to be modulated into one symbol; wherein, if the information to be modulated includes the first information, the mapping unit 1701 maps the first information into a symbol having a first amplitude, if the information to be modulated includes the second information
  • the mapping unit 1701 maps the second information to a symbol having a second amplitude, wherein a sum of an appearance probability of the first information and an appearance probability of the second information is 1, and an appearance probability of the first information is smaller than the second information.
  • the probability of occurrence, the first magnitude is greater than the second magnitude.
  • the information to be modulated is information of 1 bit, and the information to be modulated includes first information or second information.
  • the mapping unit 1701 maps the first information to an amplitude of x.
  • a symbol of 1 when the second information is included, the mapping unit 1701 maps the second information to a symbol having an amplitude of x 2 .
  • x 2 is a predefined value
  • the information to be modulated is 2-bit information
  • the information to be modulated includes first information and/or second information.
  • the mapping unit 1701 will be 2 bits. The first information is respectively mapped to a symbol having an amplitude of x 1
  • the mapping unit 1701 respectively maps the second information of the two bits into a symbol having an amplitude of x 2 , when the number of bits including 1 bit is included
  • the mapping unit 1701 maps the 1-bit first information into a symbol having an amplitude of x 1 and the 1-bit second information as a symbol having an amplitude of x 2 .
  • x 2 is a predefined value
  • the to-be-modulated information may be hybrid automatic repeat request acknowledgement information
  • the first information may be data detection failure information (NACK)
  • the second information may be data detection success information (ACK).
  • the modulation performance can be ensured in the case where the occurrence probabilities of "0" and "1" are not equal.
  • the embodiment of the present invention provides a data transmission device.
  • the principle of the device is similar to that of the second embodiment. Therefore, the specific implementation may refer to the implementation of the method in the second embodiment. Description.
  • FIG. 18 is a schematic diagram of the data transmission apparatus of the present embodiment.
  • the apparatus 1800 includes: a first modulation unit 1801 and a transmission unit 1802.
  • the first modulation unit 1801 performs the modulation information by using the method of Embodiment 1. Modulation to obtain a modulation symbol; the transmitting unit 1802 transmits the modulation symbol.
  • the first modulating unit 1801 can be implemented by the apparatus described in Embodiment 3.
  • the transmitting unit 1802 includes a spreading unit 1901 and a mapping unit 1902.
  • the spreading unit 1901 spreads the modulation symbol to obtain the spread data
  • the mapping unit 1902 The spread data is mapped to the time-frequency resources of the physical layer for transmission.
  • the spreading unit 1901 may include: a first calculating unit 19011 and a second calculating unit 19012, the first calculating unit 19011 multiplying the above modulation symbol by a sequence of length N1 to obtain a length. a first sequence of N1; the second calculating unit 19012 multiplies the first sequence by a cyclic shift sequence of length N2 to obtain a second sequence of length N1 ⁇ N2, and the second sequence is the spread spectrum data.
  • the second sequence is divided into N1 groups, each group having a length of N2.
  • the sequence of length N1 may be an orthogonal code or a non-orthogonal code.
  • the mapping unit 1902 may include a first mapping unit 19021, which may map the second sequence to different subcarriers in the same Orthogonal Frequency Division Multiplexing (OFDM) symbol.
  • the subcarriers corresponding to the second sequence of each group are consecutive in the frequency domain, and the subcarriers corresponding to the second sequence of the different groups are continuous or discontinuous.
  • mapping unit 1902 can include a second mapping unit 19022 that can map different sets of second sequences onto different sets of OFDM symbols and different sets of subcarriers.
  • mapping unit 1902 can include a third mapping unit 19023 that can map different sets of second sequences onto different OFDM symbols and the same set of subcarriers.
  • the information to be modulated is HARQ ACK/NACK, and when the HARQ ACK/NACK is transmitted on the PUCCH in PUCCH format 1a or PUCCH format 1b, the transmitting unit 1802 may transmit the above modulation symbol on a dedicated resource.
  • the dedicated resource here may be a PUCCH 1 resource calculated according to the first CCE.
  • the information to be modulated is HARQ ACK/NACK, and when the HARQ ACK/NACK is transmitted on the PUCCH in PUCCH format 2a or PUCCH format 2b, the transmitting unit 1802 may further modulate the above modulation symbols to each time. Part of the second reference signal symbol of the gap On the carrier, to send.
  • the index of some of the subcarriers herein may be predefined.
  • the information to be modulated is HARQ ACK/NACK, and when the HARQ ACK/NACK is transmitted on the PUCCH in PUCCH format 1a or PUCCH format 1b, the transmitting unit 1802 may transmit the modulation symbol with the maximum allowed power.
  • the modulation performance can be ensured in the case where the occurrence probabilities of "0" and "1" are not equal.
  • the embodiment provides a network device, which includes the device as described in Embodiment 3 or 4.
  • network device 2000 can include a processor 2001 and a memory 2002; memory 2002 is coupled to processor 2001. Wherein the memory 2002 can store various data; in addition, a program 2003 for information processing is stored, and the program 2003 is executed under the control of the processor 2001 to receive various information transmitted by the user equipment and to transmit various information to the user equipment. .
  • the functionality of the digital modulation device described in Embodiment 3 can be integrated into the central processor 2001.
  • the processor 2001 may be configured to modulate the modulation information according to the method described in Embodiment 1.
  • the functionality of the data transmission device described in Embodiment 4 can be integrated into the central processor 2001.
  • the processor 2001 may be configured to perform data transmission according to the method described in Embodiment 2.
  • the digital modulation device described in Embodiment 3 or the data transmission device described in Embodiment 3 may be configured separately from the processor 2001.
  • the digital modulation device described in Embodiment 3 or Embodiment 3 may be used.
  • the data transmission device is configured as a chip connected to the processor 2001, and the functions of the digital modulation device described in Embodiment 3 or the data transmission device described in Embodiment 3 are implemented by the control of the processor 2001.
  • the network device 2000 may further include: a transceiver 2004, an antenna 2005, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and are not described herein again. It should be noted that the network device 2000 does not have to include all the components shown in FIG. 20; in addition, the network device 2000 may further include components not shown in FIG. 20, and reference may be made to the prior art.
  • the modulation performance can be guaranteed in the case where the occurrence probabilities of "0" and "1" are not equal.
  • This embodiment provides a user equipment, which includes the apparatus as described in Embodiment 3 or 4.
  • FIG. 21 is a schematic diagram of user equipment 2100 according to an embodiment of the present invention.
  • the user device 2100 can include a processor 2101 and a memory 2102; the memory 2102 is coupled to the processor 801.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the digital modulation device described in Embodiment 3 can be integrated into the processor 2101.
  • the processor 2101 can be configured to modulate the modulation information according to the method described in Embodiment 1.
  • the functionality of the data transmission device described in Embodiment 4 can be integrated into the central processor 2101.
  • the processor 2101 can be configured to perform data transmission according to the method described in Embodiment 2.
  • the digital modulation device described in Embodiment 3 or the data transmission device described in Embodiment 3 may be configured separately from the processor 2101.
  • the digital modulation device described in Embodiment 3 or Embodiment 3 may be used.
  • the data transmission device is configured as a chip connected to the processor 2101, and the functions of the digital modulation device described in Embodiment 3 or the data transmission device described in Embodiment 3 are implemented by the control of the processor 2101.
  • the user equipment 2100 may further include: a communication module 2103, an input unit 2104, a display 2105, and a power source 2106. It should be noted that the user equipment 2100 does not necessarily have to include all the components shown in FIG. 21; in addition, the user equipment 2100 may also include components not shown in FIG. 21, and reference may be made to the prior art.
  • processor 2101 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls various components of user device 2100. operating.
  • the memory 2102 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. Can store various data, in addition A program that executes related information can be stored. And the processor 2101 can execute the program stored by the memory 2102 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of user device 2100 may be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention.
  • the modulation performance can be guaranteed in the case where the occurrence probabilities of "0" and "1" are not equal.
  • the embodiment provides a communication system, including the network device as described in Embodiment 5 and the user equipment as described in Embodiment 6.
  • FIG. 22 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • the user equipment and the network device are taken as an example.
  • the communication system 2200 may include a network device 2201 and a user equipment 2202 (for simplicity)
  • Figure 22 shows only one user equipment as an example.
  • an existing service or a service that can be implemented in the future can be performed between the network device 2201 and the user equipment 2202.
  • these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and high reliability low latency communication (URLLC, Ultra-Reliable and Low- Latency Communication), and more.
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC Ultra-Reliable and Low- Latency Communication
  • the user equipment 2202 can send data to the network device 2201, for example, using an unlicensed transmission mode.
  • the network device 2201 may receive data sent by one or more user equipment 2202 and feed back information (eg, acknowledgment (ACK)/non-acknowledgement (NACK) information) to the user equipment 2202, and the user equipment 2202 may confirm that the transmission process ends, according to the feedback information, Or you can perform new data transmission or data retransmission.
  • ACK acknowledgment
  • NACK non-acknowledgement
  • the modulation performance can be guaranteed in the case where the occurrence probabilities of "0" and "1" are not equal.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional blocks shown in FIG. 17 or FIG. 18 or FIG. 19 and/or one or more combinations of functional blocks may correspond to individual software modules of a computer program flow, or may correspond to Various hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 4 or FIG. 13, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

L'invention concerne un procédé de modulation numérique, un procédé et un appareil de transmission de données et un système de communication. Le procédé de modulation numérique consiste : à mapper des informations à moduler comprenant des premières informations dans un symbole comportant une première amplitude et à mapper des informations à moduler comprenant des secondes informations dans un symbole comportant une seconde amplitude, la probabilité d'occurrence des premières informations étant inférieure à la probabilité d'occurrence des secondes informations, la somme de la probabilité d'occurrence des premières informations et de la probabilité d'occurrence des secondes informations étant 1 et la première amplitude étant supérieure à la seconde amplitude. Les performances de modulation peuvent être ainsi garanties lorsque les probabilités d'occurrence de « 0 » et « 1 » ne sont pas égales.
PCT/CN2017/072221 2017-01-23 2017-01-23 Procédé de modulation numérique, procédé et appareil de transmission de données et système de communication WO2018133103A1 (fr)

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US20080130784A1 (en) * 2006-11-30 2008-06-05 Fujitsu Limited Coding device, decoding device, transmitter and receiver
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US20080130784A1 (en) * 2006-11-30 2008-06-05 Fujitsu Limited Coding device, decoding device, transmitter and receiver
CN104205759A (zh) * 2012-04-03 2014-12-10 松下电器产业株式会社 影像数据发送装置以及接收装置

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