WO2018192409A1 - Enhanced discovery reference signal mapping method and device - Google Patents

Abstract

The present application relates to the field of communications and provides in an embodiment an enhanced discovery reference signal mapping method and device, enabling enhanced coverage of a discovery reference signal. The method comprises : a base station determining, according to enhanced cell coverage capability, information relating to a time frequency resource for carrying an eDRS, wherein the eDRS includes one or more of an enhanced synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel, and the information relating to the time frequency resource includes one or more of a resource occupation amount, a position in the frequency domain, and a position in the time domain of the eDRS; the base station mapping, according to the information relating to the time frequency resource, the eDRS; the base station sending to a terminal the time frequency resource mapped with the eDRS; and the terminal receiving, according to the information relating to the time frequency resource, an eDRS sent by the base station. The solution according to the embodiment of the present application is applicable in the process of eDRS transmission.

Description

Method and device for enhanced sounding reference signal mapping

The present application claims the priority of the Chinese Patent Application filed on Apr. 19, 2017, the Chinese Patent Application No. 201710258890.X, entitled "A Method and Apparatus for Enhanced Detection of Reference Signal Mapping", the entire contents of which is hereby incorporated by reference. This is incorporated herein by reference.

Technical field

The present application relates to the field of communications technologies, and in particular, to an enhanced method and apparatus for sounding reference signal mapping.

Background technique

The communication system provides communication services for user terminals (such as mobile phones) through radio access network devices (such as base stations) and core network devices (such as home location registers). At present, due to the special geographical location of some user terminals (such as the water meter/meter in the basement), when the user terminal and the base station of the geographic location communicate, the signal penetration loss is large, the channel fading is large, and finally the communication of the user terminal is made. decline in quality. Therefore, it is necessary to expand the signal energy or quality between the user terminal and the base station, and perform coverage enhancement on each physical channel or signal between the user terminal and the base station, including a DSR (Discovery Reference Signal).

In the prior art, for a communication system operating in a licensed frequency band, the sounding signals are transmitted based on narrowband. In a licensed band communication system, the channel is always available, and the sounding signal is covered by repeated transmission at time and frequency.

In the process of implementing the present application, the inventors found that at least the following problems exist in the prior art:

For communication systems operating in unlicensed bands, DRS is transmitted over a relatively large bandwidth, and there is a limitation of Listening Before Talk (LBT). There is currently no feasible DRS coverage enhancement method.

Application content

In view of this, the embodiments of the present application provide an enhanced sounding reference signal mapping method and apparatus for transmitting an enhanced sounding reference signal (eDRS, by introducing more time-frequency resources for a communication system operating in an unlicensed frequency band. Enhanced DRS) to achieve DRS coverage enhancement.

In a first aspect, the embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and the method includes:

Determining information of a time-frequency resource for carrying an enhanced sounding reference signal (eDRS) including an enhanced synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and One or more of the enhanced data channels, the information of the time-frequency resource including one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS;

Mapping the eDRS according to the information of the time-frequency resource;

Transmitting the time-frequency resource with the eDRS mapped to the terminal.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the cell coverage enhancement capability. Level.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupation The size of the resource is used to indicate that the enhanced synchronization signal occupies a time-frequency resource that is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency The domain location is used to indicate that the enhanced synchronization signal is located on the center 6 physical resource block pairs of the system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency The domain location is used to indicate that the enhanced synchronization signal is on a non-central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, The domain location is used to indicate that the enhanced synchronization signal occupies any one of the orthogonal frequency division multiplexing symbols.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, The domain location is used to indicate that the enhanced synchronization signal occupies the first designated orthogonal frequency division multiplexing symbol.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the first specified orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel. Or does not contain the symbol of the cell reference signal and the physical downlink control channel;

The cell reference signal includes at least an existing cell reference signal;

The physical downlink control channel includes at least an existing physical downlink control channel.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes an occupied resource size of the eDRS, The occupied resource size is used to indicate that the enhanced physical broadcast channel occupies time-frequency resources that are n times the time-frequency resources occupied by the existing physical broadcast channel, and the value of n is the second specified value.

And the foregoing aspect, and any possible implementation manner, further providing an implementation, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, The frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, The frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, The time domain location is used to indicate that the enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, The time domain location is for the enhanced physical broadcast channel to occupy a second designated orthogonal frequency division multiplexing symbol.

An aspect of the foregoing, and any possible implementation, further providing an implementation, where the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal;

The cell reference signal includes at least an existing cell reference signal.

An aspect as described above, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, the information of the time-frequency resource includes a frequency domain of the eDRS In position, if the enhanced synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, the enhanced synchronization signal transmission priority is higher than the enhanced physical The transmission priority of the broadcast channel.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where information of the time-frequency resource includes the time-frequency resource In the frequency domain location, if the enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair in a system bandwidth, the enhanced synchronization signal The transmission priority is the same as the transmission priority of the enhanced physical broadcast channel.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, the eDRS and an existing sounding reference signal ( The relative time relationship of DRS) is fixed.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is according to The time guidelines are flexible.

The aspect and any possible implementation manners described above further provide an implementation manner, where the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.

In a second aspect, the embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and the method includes:

Receiving the eDRS sent by the base station according to the information of the time-frequency resource.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, after the receiving the eDRS sent by the base station, the method further includes:

Performing a blind check on the received eDRS to decode the eDRS.

In a third aspect, the embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and the apparatus includes:

a determining unit, configured to determine information of a time-frequency resource for carrying an enhanced sounding reference signal (eDRS) including an enhanced synchronization signal, an enhanced reference signal, and an enhancement according to the cell coverage enhancement capability One or more of a physical broadcast channel and an enhanced data channel, the information of the time-frequency resource including one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS;

a mapping unit, configured to map the eDRS according to the information of the time-frequency resource;

And a sending unit, configured to send the time-frequency resource with the eDRS mapped to the terminal.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the cell coverage enhancement capability. Level.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupation The size of the resource is used to indicate that the enhanced synchronization signal occupies a time-frequency resource that is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency The domain location is used to indicate that the enhanced synchronization signal is located on the center 6 physical resource block pairs of the system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency The domain location is used to indicate that the enhanced synchronization signal is on a non-central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, The domain location is used to indicate that the enhanced synchronization signal occupies any one of the orthogonal frequency division multiplexing symbols.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, The domain location is used to indicate that the enhanced synchronization signal occupies the first designated orthogonal frequency division multiplexing symbol.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the first specified orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel. Or does not contain the symbol of the cell reference signal and the physical downlink control channel;

The cell reference signal includes at least an existing cell reference signal;

The physical downlink control channel includes at least an existing physical downlink control channel.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes an occupied resource size of the eDRS, The occupied resource size is used to indicate that the enhanced physical broadcast channel occupies time-frequency resources that are n times the time-frequency resources occupied by the existing physical broadcast channel, and the value of n is the second specified value.

And the foregoing aspect, and any possible implementation manner, further providing an implementation, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, The frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, The frequency domain location is used to indicate that the enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, The time domain location is used to indicate that the enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, The time domain location is for the enhanced physical broadcast channel to occupy a second designated orthogonal frequency division multiplexing symbol.

An aspect of the foregoing, and any possible implementation, further providing an implementation, where the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal;

The cell reference signal includes at least an existing cell reference signal.

An aspect as described above, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, the information of the time-frequency resource includes a frequency domain of the eDRS In position, if the enhanced synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, the enhanced synchronization signal transmission priority is higher than the enhanced physical The transmission priority of the broadcast channel.

And the foregoing aspect, and any possible implementation manner, further providing an implementation manner, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where information of the time-frequency resource includes the time-frequency resource In the frequency domain location, if the enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair in a system bandwidth, the enhanced synchronization signal The transmission priority is the same as the transmission priority of the enhanced physical broadcast channel.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, the eDRS and an existing sounding reference signal ( The relative time relationship of DRS) is fixed.

The foregoing aspect and any possible implementation manner further provide an implementation manner, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is according to The time guidelines are flexible.

The aspect and any possible implementation manners described above further provide an implementation manner, where the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.

In a fourth aspect, the embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and the device includes:

The receiving unit is configured to receive the eDRS sent by the base station according to the information of the time-frequency resource.

The above-mentioned aspect and any possible implementation manner further provide an implementation manner, after the receiving the eDRS sent by the base station, the apparatus further includes:

And a blind detection unit, configured to perform blind detection on the received eDRS to decode the eDRS.

In a fifth aspect, an embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, the device including a processor, a memory, and a transceiver; the processor, the memory, and The transceiver communicates over a bus; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver;

The processor is configured to determine, by the transceiver, information about a time-frequency resource for carrying an enhanced sounding reference signal (eDRS) including an enhanced synchronization according to a cell coverage enhancement capability. One or more of a signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel, the information of the time-frequency resource including one of an occupied resource size, a frequency domain location, and a time domain location of the eDRS Or multiple;

The processor is configured to map the eDRS by using the transceiver according to the information of the time-frequency resource;

The processor is configured to send the time-frequency resource mapped with the eDRS to the terminal by using the transceiver.

In a sixth aspect, an embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, the device comprising a processor, a memory, and a transceiver; the processor, the memory, and The transceiver communicates over a bus; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver;

The processor is configured to receive an eDRS sent by the base station by using the transceiver according to the information of the time-frequency resource. An embodiment of the present application provides an enhanced method for sounding reference signal mapping, and a device for operating in an unlicensed frequency band, introducing more time according to information of a time-frequency resource for carrying an enhanced sounding reference signal The frequency resource carries the enhanced sounding reference signal, and the base station and the terminal interact to complete the transmission of the eDRS, and realize the repeated transmission of the sounding reference signal on the time-frequency, improve the energy of the sounding reference signal, and realize the coverage enhancement of the sounding reference signal.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. One of ordinary skill in the art can also obtain other drawings based on these drawings without paying for inventive labor.

1 is a flowchart of a method for enhancing sounding reference signal mapping according to an embodiment of the present application;

2 is a schematic diagram of mapping of an enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 3(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 3(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 3(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 3(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

4(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 4(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 4(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 4(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

4(e) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 4(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 5(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 5(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 5(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 5(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 6(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 6(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 6(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 6(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 7(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 7(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 7(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 8(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 8(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 8(x) is a diagram of a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 9(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 9(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 9(x) is a diagram of a mapping diagram of another enhanced sounding reference signal provided by an embodiment of the present application;

10 is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 11(a) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 11(b) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 11(c) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 11(d) is a schematic diagram of mapping of another enhanced sounding reference signal provided by an embodiment of the present application;

FIG. 12 is a flowchart of another method for enhancing sounding reference signal mapping according to an embodiment of the present disclosure;

FIG. 13 is a structural block diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application;

FIG. 14 is a structural block diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application;

FIG. 15 is a structural block diagram of another enhanced sounding reference signal mapping apparatus according to an embodiment of the present disclosure;

16 is a physical structural diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application;

FIG. 17 is a structural diagram of an enhanced sounding reference signal mapping apparatus according to an embodiment of the present application.

detailed description

For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the application. The singular forms "a", "the", and "the"

It should be understood that although the terms first and second may be used to describe the specified orthogonal frequency division multiplexing symbols in the embodiments of the present application, these specified orthogonal frequency division multiplexing symbols should not be limited to these terms. These terms are only used to distinguish the specified orthogonal frequency division multiplexing symbols from each other. For example, the first designated orthogonal frequency division multiplexing symbol may also be referred to as a second designated orthogonal frequency division multiplexing symbol without departing from the scope of the embodiments of the present application. Similarly, the second designated positive The cross-frequency division multiplexing symbols may also be referred to as designated orthogonal frequency division multiplexing symbols.

Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting." Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".

It should be understood that the term "and/or" as used herein is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, while A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

An embodiment of the present application provides an enhanced method for sounding reference signal mapping, which is applied to a mobile communication system in an unlicensed frequency band (especially for a cellular communication system operating independently in an unlicensed frequency band, such as MulteFire (MF)). The coverage of the unlicensed band enhances the transmission of enhanced sounding reference signals between the terminal and the base station.

The mobile communication technology of the present application may be WCDMA (Wideband Code Division Multiple Access), CDMA2000 (Code Division Multiple Access 2000), and TD-SCDMA (Time Division-Synchronous Code Division). Multiple Access, Time Division Synchronous Code Division Multiple Access), WiMAX (Worldwide Interoperability for Microwave Access), LTE/LTE-A (Long Term Evolution/Long Term Evolution-Advanced) ), LAA (Licensed-Assisted Access, wireless access based on licensed bands), MulteFire, and subsequent fifth, sixth, and Nth generation mobile communication technologies.

For convenience of description, the following embodiments are described using an MF system of an unlicensed band.

MulteFire is a wireless access technology that extends LTE to unlicensed bands, where unlicensed band carriers can be serviced independently without the aid of licensed band carriers. This technology has also become stand-alone LTE-U (stand-alone LTE-U). In order to interfere with other unlicensed band devices (such as WiFi devices) in the unlicensed band channel and avoid interference between unlicensed band devices, the MF physical layer introduces a WiFi-like carrier sensing technology (LBT, Listen Before) Talk) mechanism. When the base station or terminal monitors that the unlicensed band channel is occupied, that is, when the LBT fails, the signal is stopped, and when the channel is idle, that is, the LBT is successful, the signal is sent.

The base station refers to a form of a radio station, and refers to a radio access network device that transmits various channels or signals to a terminal through a mobile communication switching center in a certain radio coverage area.

The terminal refers to a terminal side product that can support the communication protocol of the land mobile communication system, and a special modem module (Wireless Modem), which can be integrated by various types of terminal forms such as a mobile phone, a tablet computer, and a data card. Communication function.

The base station and the terminal in the embodiment of the present application all work in an unlicensed frequency band, and are simply referred to as a base station and a terminal for convenience of description.

As shown in FIG. 1, the method includes:

The base station determines, according to the cell coverage enhancement capability, the information of the time-frequency resource used to carry the enhanced Discovery Reference Signal (eDRS).

The eDRS includes one or more of an enhanced synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel.

The information of the time-frequency resource includes one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS. The information of the time-frequency resource is used to indicate mapping and transmission of the eDRS.

It should be noted that, for users who perform coverage enhancement in the MF system, the present application introduces an additional time-frequency resource transmission DRS, so that the coverage enhancement user can perform synchronization to obtain system information. To distinguish it from the original DRS, the DRS carried on the additionally introduced time-frequency resource is named eDRS, and the original DRS is named as the existing DRS. The existing DRS includes an existing synchronization signal (legacy Sync), an existing reference signal, an existing physical broadcast channel, an existing data channel, and the eDRS includes an enhanced synchronization signal (enhanced Sync, e-Sync), an enhanced reference signal, and an enhancement. Physical broadcast channel (enhanced MF-PBCH, eMF-PBCH), enhanced data channel, etc., and the information carried by each channel in the existing DRS and eDRS is the same. Moreover, the coverage enhancement user needs to decode the eDRS as well as the existing DRS, and the non-coverage enhanced user only decodes the existing DRS.

The synchronization signal refers to a primary synchronization signal/secondary synchronization signal (PSS/SSS, Primary Synchronization Signal/Secondary Synchronization Signal), an MF primary synchronization signal/MF secondary synchronization signal (MF-PSS/MF-SSS, Multefire Primary Synchronization Signal /Multefire Secondary Synchronization Signal).

The reference signal refers to a cell reference signal (CRS, Cell Reference Signal) and a configured channel state information reference signal (CSI-RS, Channel State Information-Reference Signal).

The physical broadcast channel refers to the MF Physical Broadcast Channel (MF-PBCH, Multefire Physical Broadcast Channel). Here, the MF-PBCH carries the MF Master System Block (MIB-MF, Master Information Block Multefire).

The data channel includes a physical downlink shared channel (PDSCH) and a corresponding physical downlink control channel (PDCCH, Physical Downlink Control Channel). Here, the information carried by the broadcast PDSCH includes MF System Information Block 1 (SIB-MF1, System Information Block Multefire1).

102. The base station maps the eDRS according to information about the time-frequency resource.

The eNodeB maps the eDRS to the corresponding time-frequency resource according to the specific information of the video resource, such as the occupied resource size, the frequency domain location, and the time domain location of the eDRS.

103. The base station sends the time-frequency resource with the eDRS mapped to the terminal.

The terminal in step 103 refers to a terminal that performs coverage enhancement on the user. For convenience of description, the terminal is hereinafter referred to as a terminal.

104. The terminal receives the eDRS sent by the base station according to the information of the time-frequency resource.

The terminal receives the eDRS according to the information of the specific time-frequency resource.

An embodiment of the present application provides an enhanced method for sounding reference signal mapping. For a communication system operating in an unlicensed frequency band, more time-frequency resources are introduced according to information of a time-frequency resource used to carry an enhanced sounding reference signal. The enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.

Further, in combination with the foregoing method, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the level of the cell coverage enhancement capability.

The system's maximum coverage enhancement capability can be divided into multiple levels, and each cell can be enhanced according to different maximum coverage enhancement capabilities (for example, the system's maximum coverage enhancement capability has three levels of {8dB, 4dB, 0dB}. When it is 0dB, the cell Without coverage enhancement, a set of time-frequency resources of corresponding size is determined for transmitting eDRS. That is, the size of the time-frequency resource used to carry the eDRS depends on the cell coverage enhancement capability. Here, the value of the maximum coverage enhancement capability is for the channel with the worst coverage, and the coverage enhancement of other channels is based on the coverage difference before the worst channel, correspondingly to complement different coverage enhancements. Therefore, the coverage enhancement of different channels is different, and correspondingly, time-frequency resources of different sizes and different positions are required.

The embodiments of the present application introduce the information of the enhanced sounding reference signal separately based on the enhanced synchronization signal (for coverage enhanced user synchronization) and the enhanced physical broadcast channel (for coverage enhanced user acquisition system information MIB-MF).

Further, in combination with the foregoing method, when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the size of the occupied resource is used to indicate the enhanced synchronization. The time-frequency resource occupied by the signal is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.

When the time-frequency resource occupied by the enhanced synchronization signal is m times of the time-frequency resource of the existing synchronization signal, the existing synchronization signal is repeatedly transmitted m+1 times, that is, the existing synchronization signal is enhanced by m+1 times.

The first specified value may be any non-negative number.

In order to cover the coverage enhancement of the enhanced user's synchronization signal, a certain multiple of the existing synchronization signal is repeatedly transmitted by transmitting the enhanced synchronization signal. The size of the resource occupied by the enhanced synchronization signal depends on the coverage capability of the cell, that is, the number of repeated transmissions of the existing synchronization signal depends on the coverage enhancement capability of one cell.

For a clearer explanation of the size relationship between the enhanced sync signal and the existing sync signal, the following is exemplified by a specific number. Based on the cell coverage enhancement capability of {0, 4, 8} dB, the coverage of the existing synchronization signal is enhanced to {0, 2.5, 6.5} dB. Correspondingly, in Example 1, the maximum number of repeated transmissions of the existing synchronization signal may be taken as {1, 2, 5} to achieve different coverage enhancement capabilities of the cell. That is, the introduced enhanced synchronization signal occupies the time-frequency resource, and the existing synchronization signal occupies {0, 1, 4} times of the time-frequency resource, that is, m is {0, 1, 4}. Example 2, the possible maximum number of repeated transmissions of the existing synchronization signal is {1, 2, 4.5}. That is, the size of the time-frequency resource occupied by the enhanced synchronization signal is {0, 1, 3.5} times that of the existing synchronization signal, that is, m is {0, 1, 3.5}. In Example 3, the maximum number of repeated transmissions of the existing synchronization signal is {1, 2, 4} times. That is, the size of the time-frequency resource occupied by the enhanced synchronization signal is {0, 1, 3} times that of the existing synchronization signal, that is, m is {0, 1, 3, 3. In Example 4, the possible maximum number of repeated transmissions of the existing synchronization signal is {1, 1.5, 4.5}. That is, the introduced enhanced synchronization signal occupies the time-frequency resource, and the existing synchronization signal occupies {0, 0.5, 3.5} times of the time-frequency resource, that is, m is {0, 0.5, 3.5}. Correspondingly, according to the above example, when the coverage enhancement is assumed to be based on the existing PSS/SSS and MF-PSS/SSS (that is, the existing synchronization signal occupies a total of 4 OFDM (Orthogonal Frequency Division Multiplexing) symbols. If the number of OFDM symbols occupied by the enhanced synchronization signal is N, then N=4*m, that is, the value of N in the example 1 is {0, 4, 16}, and the value of N in the example 2 is { 0, 4, 14}, the value of N in Example 3 is {0, 4, 12}, and the value of N in Example 4 is {0, 2, 14}. When the coverage enhancement is based on the existing MF-PSS/SSS or PSS/SSS (that is, the existing synchronization signal occupies 2 OFDM symbols in total), the values of N in Example 1, Example 2, Example 3, and Example 4 They are {0, 2, 8}, {0, 2, 7}, {0, 2, 6}, {0, 1, 7}.

As shown in FIG. 2, the coverage enhancement of the existing synchronization signal (legacy Sync) based on the 4-OFDM symbol (identified by the OFDM symbol in the figure) is given. That is, an enhanced synchronization signal (e-Sync) of the N-symbol is obtained by the existing PSS/SSS and MF-PSS/MF-SSS. For the convenience of the illustration, it is assumed that the transmission bandwidth of the enhanced synchronization signal is 6 PRB (Physical Resource Block) pairs, and FIG. 2 shows a schematic diagram of one of the PRB pairs (the other five are the same). In the figure, each small grid refers to a Resource Element (RE).

It should be noted that the mapping of the subsequent e-Sync in the embodiment of the present application is based on the legacy Sync of the 4-OFDM symbol (ie, the legacy Sync includes the PSS/SSS and the MF-PSS/MF-SSS), and the subsequent ones are no longer used. A narrative.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the enhanced synchronization signal. In the frequency domain location in the system bandwidth, the enhanced synchronization signal may be located on the center of the system bandwidth of 6 PRB pairs, or may be located on the non-central 6 PRB pairs of the system bandwidth.

Based on the existing synchronization signal (legacy Sync) occupying 4 OFDM symbols, the enhanced synchronization signal (e-Sync) occupies N OFDM symbols, based on FIG. 3(a) - FIG. 3(d), the enhanced synchronization signal and the existing The frequency domain positional relationship of the synchronization incoming signal is further explained. As shown in Fig. 3(a) and Fig. 3(b), the enhanced synchronization signal is located in the six PRB pairs in the center of the system bandwidth, and the enhanced synchronization signal of the N-symbol in Fig. 3(a) is different from the existing synchronization signal. In the Interval Time Interval (TTI), a part of the enhanced synchronization signal in Figure 3(b) is in the same TTI as the existing synchronization signal. As shown in Figures 3(c) and 3(d), the enhanced synchronization signal can also be located in a non-central 6 PRB pair of system bandwidth. 3(c) The enhanced synchronization signal of the N-symbol is located in a plurality of sets of non-central 6 PRBs within the TTI of the existing synchronization signal, and the enhanced synchronization signal of the N-symbol of FIG. 3(d) is located in a plurality of different TTIs. Groups of non-centered 6 PRB pairs and centers 6 PRB pairs. 3(a) to 3(d), when the enhanced synchronization signal is divided into a plurality of sections, it is indicated by Part 1, 2, 3, .... It should be noted that the relationship between the enhanced synchronization signal and the existing synchronization signal is not limited to the examples of FIGS. 3(a) to 3(d), and there may be more ways.

It should be noted that, for other signals or channels in the eDRS, such as an enhanced physical broadcast channel, the positional relationship with the existing broadcast channel may also be mapped according to the positional relationship in the examples of FIGS. 3(a) to 3(d). No more one-by-one illustration here.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the enhanced synchronization signal. The time domain location, the enhanced synchronization signal may occupy any one of the OFDM symbols, and may also occupy the first designated orthogonal frequency division multiplexing symbol.

The first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal (CRS) or a symbol that does not include a physical downlink control channel (PDCCH) or does not include a cell reference signal and a physical downlink control channel. symbol.

The enhanced synchronization signal is transmitted in any one of the OFDM symbols, meaning that the RE of the enhanced synchronization signal can puncture any of the signals within the system. The enhanced synchronization signal is transmitted on an OFDM symbol that does not contain a CRS, meaning that the RE of the enhanced synchronization signal can puncture other signals than the CRS. The enhanced synchronization signal is transmitted on an OFDM symbol that does not contain a PDCCH, that is, the enhanced synchronization signal can puncture other signals than the PDCCH. The enhanced synchronization signal is transmitted on OFDM symbols that do not contain CRS and PDCCH, ie, the enhanced synchronization signal can puncture other signals than CRS and PDCCH.

The cell reference signal (CRS) includes at least an existing cell reference signal. Alternatively, the cell reference signal includes an existing cell reference signal and an enhanced cell reference signal.

The physical downlink control channel (PDCCH) includes at least an existing physical downlink control channel. Alternatively, the physical downlink control channel includes an existing physical downlink control channel and an enhanced physical downlink control channel.

In order to further explain the time domain position of the enhanced synchronization signal, the following diagrams of the enhanced synchronization signal occupying the OFDM symbol are combined with FIG. 4(a) to FIG. 4(e) and FIG. 5(a) to FIG. 5(c). Show examples. 4(x) and 5(x) are illustrations of FIGS. 4(a) to 4(e) and 5(a) to 5(c), respectively.

In FIG. 4(a) to FIG. 4(e), the enhanced synchronization signal puncture CRS, but not the puncture PDCCH. Figure 4 (a), Figure 4 (b), Figure 4 (c) existing synchronization signal enhancement 4 times; Figure 4 (d) existing synchronization signal enhancement 4.5 times; Figure 4 (e) existing synchronization signal enhancement 5 times .

5(a) to 5(c), the transmission of the enhanced synchronization signal is not puncture CRS and PDCCH, and the enhanced synchronization signal does not conflict with the transmission of the CRS (ie, the enhanced synchronization signal is mapped to the OFDM without CRS). Inside the symbol). Fig. 5(a) shows that the existing synchronizing signal is enhanced by 4 times; Fig. 5(b) the existing synchronizing signal is enhanced by 4.5 times; and Fig. 5(c) shows that the existing synchronizing signal is enhanced by 5 times.

And for the convenience of illustration, in FIG. 4(a) - FIG. 4(e) and FIG. 5(a) - FIG. 5(c), the enhanced synchronization signal is transmitted only in the center 6 PRB pairs of the system bandwidth, and Only a schematic of one of the PRB pairs is shown in the figure (the other five are the same). In the figure, each small grid refers to an RE.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupied resource size is used to indicate the enhanced physical The time-frequency resource occupied by the broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.

Wherein, when the time-frequency resource occupied by the enhanced physical broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, that is, the existing physical broadcast channel is repeatedly transmitted n+1 times, that is, the existing physical broadcast channel is enhanced by n+1. Times.

The second specified value may be any non-negative number.

In order to cover the coverage enhancement of the physical broadcast channel of the enhanced user, a certain multiple of the existing physical broadcast channel is repeatedly transmitted by transmitting the enhanced physical broadcast channel. The size of the resource occupied by the enhanced physical broadcast channel depends on the coverage capability of the cell, that is, the number of repeated transmissions of the existing physical broadcast channel depends on the coverage enhancement capability of one cell. Based on the cell coverage enhancement capability of {0, 4, 8} dB and the MF-PBCH corresponding enhancement of {0, 4, 8} dB, the maximum number of repeated transmissions of the MF-PBCH may be 6 (n=5), 6.5. Times (n=5.5), or 7 times (n=6), that is, the resource size of the enhanced synchronization signal is 5 times, 5.5 times or 6 times that of the existing MF-PBCH.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the enhanced physical The frequency channel location of the broadcast channel in the system bandwidth, the enhanced physical broadcast channel may be located on the center of the system bandwidth of six physical resource block pairs, or may be located on the non-central 6 PRB pairs of the system bandwidth.

The frequency domain positional relationship between the enhanced MF-PBCH and the existing MF-PBCH is further explained. When the enhanced MF-PBCH is located on the center 6 PRB pairs of the system bandwidth, the enhanced MF-PBCH and the existing MF-PBCH may not be in the same TTI or in the same TTI. When the enhanced MF-PBCH is located on a non-central 6 PRB pair of system bandwidth, the enhanced MF-PBCH and the existing MF-PBCH may not be in the same TTI or in the same TTI.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the enhanced physical The time domain location of the broadcast channel, the enhanced physical broadcast channel may occupy any one of the orthogonal frequency division multiplexing symbols, or may occupy the second specified orthogonal frequency division multiplexing symbol.

The second designated orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal.

The cell reference signal includes at least an existing cell reference signal. Alternatively, the cell reference signal includes an existing cell reference signal and an enhanced cell reference signal.

It should be noted that, when transmitting the enhanced MF-PBCH, if the OFDM symbol carrying the existing MF-PBCH does not contain the CRS, the enhanced MF-PBCH may be mapped to the OFDM symbol without the CRS; or mapped to the CRS-containing On the OFDM symbol, simultaneously puncture CRS. If the OFDM symbol carrying the existing MF-PBCH contains a CRS, the enhanced MF-PBCH is mapped to an OFDM symbol containing a CRS or no CRS. For an OFDM symbol containing a CRS, the CRS may be repeatedly transmitted at a corresponding time-frequency resource, or the CRS may not be transmitted.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain position of the eDRS, if the enhanced synchronization signal is The enhanced physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.

When the enhanced synchronization signal transmission priority is higher than the transmission priority of the enhanced physical broadcast channel, the system uses all available resources to transmit the enhanced synchronization signal as much as possible before starting to transmit the enhanced MF-PBCH. That is, the transmission of the enhanced synchronization signal takes precedence over the enhanced MF-PBCH.

Further, in combination with the foregoing method flow, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, if the enhanced synchronization Signaling and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of a system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel The transmission priority is the same.

When the enhanced synchronization signal transmission priority is the same as the transmission priority of the enhanced physical broadcast channel, it means that the system transmits the enhanced synchronization signal and the enhanced MF-PBCH in parallel.

In order to make the transmission situation of e-Sync and enhanced MF-PBCH easier to understand, based on different existing synchronization signal enhancement multiples and existing MF-PBCH enhancement multiples, through Figure 6(a)-Fig. 6(c), 7(a), FIG. 7(b), FIG. 8(a), FIG. 8(b), FIG. 9(a), and FIG. 9(b) illustrate the mapping of e-Sync and enhanced MF-PBCH. 6(x), 7(x), 8(x), and 9(x) are respectively shown in Fig. 6(a) - Fig. 6(c) and Fig. 7(a) - Fig. 7(b) Fig. 8(a) - Fig. 8(b), Fig. 9(a) - Fig. 9(b) are legends. And for convenience of illustration, FIG. 6(a) - FIG. 6(c), FIG. 7(a), FIG. 7(b), FIG. 8(a), FIG. 8(b), FIG. 9(a), FIG. In (b), the enhanced synchronization signal is transmitted only within the center 6 PRB pairs of the system bandwidth, and only one of the PRB pairs is shown in the figure (the other five are the same).

In FIGS. 6(a) to 6(c), the existing synchronizing signal is enhanced by 4 times, and the existing MF-PBCH is enhanced by 6 times. In FIGS. 7(a) and 7(b), the existing synchronizing signal is enhanced by 4.5 times, and the existing MF-PBCH is enhanced by 6 times. In Figs. 8(a) and 8(b), the existing synchronizing signal is enhanced by 4.5 times, and the existing MF-PBCH is enhanced by 7 times. In Fig. 9(a) and Fig. 9(b), the existing synchronizing signal is enhanced by 5 times, and the existing MF-PBCH is enhanced by 6.5 times.

Here, when the eMF-PBCH in the figure is divided into a plurality of parts, it is identified by eMF-PBCH #1, 2, 3, 4, .

It should be noted that, in the above illustration, except for the TTI including the existing DRS, other TTIs including the eDRS may be transmitted in the non-central PRB pairs within one TTI according to the existing pattern. Therefore, the time-frequency resources used for transmitting the eDRS can be obtained only by time domain extension, or can be obtained only by frequency domain extension (ie, non-central 6 PRBs), or can be extended by both the time domain and the frequency domain. Among them, the TTI containing eDRS can also contain the existing DRS.

Further, in combination with the foregoing method flow, when the information of the time-frequency resource includes the time domain location of the time-frequency resource, the relative time relationship between the eDRS and the existing DRS is fixed; or flexible according to the time criterion.

The time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.

It should be noted that, in order to implement the DRS coverage enhancement of the coverage enhanced user, the transmission time of the eDRS may be greater than 1 TTI.

The relative time relationship between existing DRS and eDRS can be fixed. For example, the existing DRS is always sent first, then the eDRS is sent, and, in view of the fact that other data channels need to be transmitted, the existing DRS is always transmitted in TTI0 or TTI5, and the eDRS is sent in the TTI after TTI0 or TTI5, as shown in Figure 10 is a schematic view. Further, if there is no user-specific data, the existing DRS can start at any one of the TTIs.

The relative time relationship between the existing DRS and the eDRS is flexible, and can be flexibly changed according to the time point of the success of the mechanism and the time rule of the eDRS available time period. However, in order to reduce the blind detection complexity of the user, the relative time relationship between the existing DRS and the eDRS can be defined. As shown in Fig. 11 (a), Fig. 11 (b), Fig. 11 (c), and Fig. 11 (d), the relative time relationship between the existing DRS and the eDRS changes depending on the time point at which the LBT succeeds. 11(a), 11(b), 11(c), and 11(d), it is assumed that the eDRS occupies 4 TTIs in the time domain, and the existing DRS occupies 1 TTI, and can only be in the TTI. #0 and TTI#5 are sent.

In FIG. 11(a), after the LBT succeeds, the eNB starts downlink transmission from TTI#1. Since the existing DRS can only be sent in TTI#0/5, the eDRS is advanced to TTI#1-#4 for transmission.

In FIG. 11(b), after the LBT succeeds, the eNB starts downlink transmission from TTI#2. Then, the second part of the eDRS is placed on the TTI#2-#4, and then the existing DRS is transmitted, and then the first part of the eDRS is transmitted.

In FIG. 11(c), after the LBT succeeds, the eNB starts downlink transmission from TTI#3. Then, the third part of the eDRS is placed on the TTI#3-#4, and then the existing DRS is transmitted, and then the first part and the second part of the eDRS are transmitted.

In FIG. 11(d), after the LBT succeeds, the eNB starts downlink transmission from TTI#4. Then, the fourth part of the eDRS is placed on the TTI #4 for transmission, then the existing DRS is transmitted, and then the first part - the third part of the eDRS is transmitted.

Further, in combination with the foregoing method flow, after the terminal receives the eDRS, since the relative time relationship between the eDRS and the existing DRS is flexibly changed, after the terminal receives the eDRS, a blind check is also required to decode the eDRS. Therefore, another possible implementation manner of the embodiment of the present application further provides the following method flow. As shown in FIG. 12, after the step 104, the method includes:

105. The terminal performs blind detection on the received eDRS to decode the eDRS.

Based on the above embodiment, it should be noted that the coverage enhancement user receives the existing DRS in the DMTC (Discovery Signals Measurement Timing Configuration) window. The base station can transmit the eDRS within the DMTC or send the eDRS outside the DMTC. It should be noted that when the base station sends the eDRS outside the DMTC, the coverage enhanced user does not need to merge the existing DRS within the DMTC, and can decode only based on the eDRS other than the DMTC.

An embodiment of the present application provides an apparatus for enhancing a sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band, and is applicable to the foregoing method flow. As shown in FIG. 13, the apparatus includes:

a determining unit 21, configured to determine, according to the cell coverage enhancement capability, information for time-frequency resources for carrying an enhanced sounding reference signal (eDRS), where the enhanced signal includes an enhanced synchronization signal, an enhanced reference signal, And one or more of an enhanced physical broadcast channel and an enhanced data channel, the information of the time-frequency resource including one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS.

The mapping unit 22 is configured to map the eDRS according to the information of the time-frequency resource.

The sending unit 23 is configured to send the time-frequency resource with the eDRS mapped to the terminal.

Optionally, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on a level of the cell coverage enhancement capability.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the size of the occupied resource is used to indicate that the enhanced synchronization signal occupies a time-frequency. The resource is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth. The center has 6 physical resource blocks on the top.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth. Non-central 6 physical resource blocks are paired.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced synchronization signal occupies any positive The frequency division multiplexing symbol.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced synchronization signal occupies a first designation Orthogonal frequency division multiplexing symbols.

Optionally, the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or a symbol that does not include a cell reference signal and a physical downlink control channel; The cell reference signal includes at least an existing cell reference signal; and the physical downlink control channel includes at least an existing physical downlink control channel.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupied resource size is used to indicate that the enhanced physical broadcast channel is occupied. The frequency resource is n times the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced physical broadcast channel is located. The center of the system bandwidth is on the top of six physical resource blocks.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced physical broadcast channel is located in the system. The non-central 6 physical resource blocks of the bandwidth are paired.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced physical broadcast channel occupies any An orthogonal frequency division multiplexing symbol.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used by the enhanced physical broadcast channel to occupy a second The specified orthogonal frequency division multiplexing symbol.

Optionally, the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; and the cell reference signal includes at least an existing cell reference signal.

Optionally, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, if the enhanced synchronization signal and the enhanced The physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.

Optionally, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, if the enhanced synchronization signal is The enhanced physical broadcast channel is transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of the system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel transmission priority the same.

Optionally, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed.

Optionally, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion.

Optionally, the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal. The enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.

An embodiment of the present application provides an apparatus for enhancing a sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band, and is applicable to the foregoing method flow. As shown in FIG. 14, the apparatus includes:

The receiving unit 31 is configured to receive the eDRS sent by the base station according to the information of the time-frequency resource.

Optionally, as shown in FIG. 15, the device further includes:

The blind detection unit 32 is configured to perform blind detection on the received eDRS to decode the eDRS.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal. The enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a base station operating in an unlicensed frequency band. As shown in FIG. 16, the apparatus includes a processor 41, a memory 42, and a transceiver 43. The processor 41, the memory 42 and the transceiver 43 communicate via a bus; the memory 42 is configured with computer code, and the processor 41 can call the code to control the transceiver 43.

The processor 41 is configured to determine, by using the transceiver 43, information about a time-frequency resource for carrying an enhanced sounding reference signal (eDRS), where the eDRS includes an enhancement, according to a cell coverage enhancement capability. One or more of a synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel, the information of the time-frequency resource including an occupied resource size, a frequency domain location, and a time domain location of the eDRS One or more.

The processor 41 is configured to map the eDRS by using the information of the time-frequency resource by using the transceiver 43.

The processor 41 is configured to send the time-frequency resource mapped with the eDRS to the terminal by using the transceiver 43.

Optionally, when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on a level of the cell coverage enhancement capability.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the size of the occupied resource is used to indicate that the enhanced synchronization signal occupies a time-frequency. The resource is m times the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth. The center has 6 physical resource blocks on the top.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced synchronization signal is located in a system bandwidth. Non-central 6 physical resource blocks are paired.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced synchronization signal occupies any positive The frequency division multiplexing symbol.

Optionally, when the eDRS includes an enhanced synchronization signal, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced synchronization signal occupies a first designation Orthogonal frequency division multiplexing symbols.

Optionally, the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or a symbol that does not include a cell reference signal and a physical downlink control channel; The cell reference signal includes at least an existing cell reference signal; and the physical downlink control channel includes at least an existing physical downlink control channel.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupied resource size is used to indicate that the enhanced physical broadcast channel is occupied. The frequency resource is n times the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced physical broadcast channel is located. The center of the system bandwidth is on the top of six physical resource blocks.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate that the enhanced physical broadcast channel is located in the system. The non-central 6 physical resource blocks of the bandwidth are paired.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate that the enhanced physical broadcast channel occupies any An orthogonal frequency division multiplexing symbol.

Optionally, when the eDRS includes an enhanced physical broadcast channel, where the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used by the enhanced physical broadcast channel to occupy a second The specified orthogonal frequency division multiplexing symbol.

Optionally, the second specified orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; and the cell reference signal includes at least an existing cell reference signal.

Optionally, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the eDRS, if the enhanced synchronization signal and the enhanced The physical broadcast channels are all transmitted on a central 6 physical resource block pair of the system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority.

Optionally, when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, where the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, if the enhanced synchronization signal is The enhanced physical broadcast channel is transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of the system bandwidth, the enhanced synchronization signal transmission priority and the enhanced physical broadcast channel transmission priority the same.

Optionally, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed.

Optionally, when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion.

Optionally, the time criterion includes a time point when the mechanism is said to be successful, and the eDRS available time period.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal. The enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, which is applicable to a terminal operating in an unlicensed frequency band. As shown in FIG. 17, the apparatus includes a processor 51, a memory 52, and a transceiver 53. The processor 51, the memory 52 and the transceiver 53 communicate via a bus; the memory 52 is configured with computer code, and the processor 51 can call the code to control the transceiver 53.

The processor 51 is configured to receive, by using the information about the time-frequency resource, the eDRS sent by the base station by using the transceiver 53.

Optionally, the processor 51 is further configured to perform blind detection on the received eDRS by using the transceiver 53 to decode the eDRS.

An embodiment of the present application provides an apparatus for enhancing sounding reference signal mapping, and for a communication system operating in an unlicensed frequency band, introducing more time-frequency resources according to information of a time-frequency resource for carrying an enhanced sounding reference signal. The enhanced sounding reference signal is carried by the base station and the terminal to complete the transmission of the eDRS, and the repeated transmission of the sounding reference signal at the time and frequency is realized, the energy of the sounding reference signal is improved, and the coverage enhancement of the sounding reference signal is realized.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims (44)

An enhanced method for sounding reference signal mapping, characterized by being applicable to a base station operating in an unlicensed frequency band, the method comprising: Determining, according to the cell coverage enhancement capability, information for time-frequency resources for carrying the enhanced sounding reference signal eDRS, the eDRS including one of an enhanced synchronization signal, an enhanced reference signal, an enhanced physical broadcast channel, and an enhanced data channel Or multiple, the information of the time-frequency resource includes one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS; Mapping the eDRS according to the information of the time-frequency resource; Transmitting the time-frequency resource with the eDRS mapped to the terminal. The method according to claim 1, wherein when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on the level of the cell coverage enhancement capability. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the size of the occupied resource is used to indicate The time-frequency resource occupied by the enhanced synchronization signal is m times of the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the The enhanced synchronization signal is located on the center of the system bandwidth of six physical resource block pairs. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the The enhanced synchronization signal is located on a non-central 6 physical resource block pair of system bandwidth. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the The enhanced sync signal occupies any one of the orthogonal frequency division multiplexing symbols. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the The enhanced sync signal occupies the first designated orthogonal frequency division multiplexing symbol. The method according to claim 7, wherein the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or does not include a cell reference signal and The symbol of the physical downlink control channel; The cell reference signal includes at least an existing cell reference signal; The physical downlink control channel includes at least an existing physical downlink control channel. The method according to claim 1, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupied resource size is used to indicate The time-frequency resource occupied by the enhanced physical broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value. The method according to claim 1, wherein when the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate when the eDRS includes an enhanced physical broadcast channel. The enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth. The method according to claim 1, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate The enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth. The method according to claim 1, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate The enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols. The method according to claim 1, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used for the The enhanced physical broadcast channel occupies a second designated orthogonal frequency division multiplexing symbol. The method according to claim 13, wherein said second designated orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; The cell reference signal includes at least an existing cell reference signal. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, the information of the time-frequency resource includes a frequency domain position of the eDRS, if the enhancement The synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority. The method according to claim 1, wherein when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, and the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, The enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of a system bandwidth, the enhanced synchronization signal transmission priority and the enhancement The physical broadcast channel has the same transmission priority. The method according to claim 1, wherein when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed. . The method according to claim 1, wherein when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion. The method of claim 18, wherein the time criterion comprises a time point at which the mechanism is said to be successful, and the eDRS available time period. An enhanced method for sounding reference signal mapping, characterized by being applicable to a terminal operating in an unlicensed frequency band, the method comprising: Receiving the eDRS sent by the base station according to the information of the time-frequency resource. The method according to claim 20, wherein after the receiving the eDRS sent by the base station, the method further comprises: Performing a blind check on the received eDRS to decode the eDRS. An apparatus for enhancing sounding reference signal mapping, characterized by being applicable to a base station operating in an unlicensed frequency band, the apparatus comprising: a determining unit, configured to determine, according to the cell coverage enhancement capability, information for time-frequency resources for carrying the enhanced sounding reference signal eDRS, the enhanced signal, the enhanced reference signal, the enhanced physical broadcast channel, and the enhanced One or more of the data channels, where the information of the time-frequency resource includes one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS; a mapping unit, configured to map the eDRS according to the information of the time-frequency resource; And a sending unit, configured to send the time-frequency resource with the eDRS mapped to the terminal. The apparatus according to claim 22, wherein when the information of the time-frequency resource includes the occupied resource size of the eDRS, the size of the occupied resource depends on a level of the cell coverage enhancement capability. The device according to claim 22, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the size of the occupied resource is used to indicate The time-frequency resource occupied by the enhanced synchronization signal is m times of the time-frequency resource occupied by the existing synchronization signal, and the value of m is the first specified value. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the The enhanced synchronization signal is located on the center of the system bandwidth of six physical resource block pairs. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate the The enhanced synchronization signal is located on a non-central 6 physical resource block pair of system bandwidth. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the The enhanced sync signal occupies any one of the orthogonal frequency division multiplexing symbols. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate the The enhanced sync signal occupies the first designated orthogonal frequency division multiplexing symbol. The apparatus according to claim 28, wherein the first designated orthogonal frequency division multiplexing symbol indicates a symbol that does not include a cell reference signal or a symbol that does not include a physical downlink control channel or does not include a cell reference signal and The symbol of the physical downlink control channel; The cell reference signal includes at least an existing cell reference signal; The physical downlink control channel includes at least an existing physical downlink control channel. The device according to claim 22, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes an occupied resource size of the eDRS, the occupied resource size is used to indicate The time-frequency resource occupied by the enhanced physical broadcast channel is n times of the time-frequency resource occupied by the existing physical broadcast channel, and the value of n is the second specified value. The apparatus according to claim 22, wherein when the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate when the eDRS includes an enhanced physical broadcast channel. The enhanced physical broadcast channel is located on a central 6 physical resource block pair of system bandwidth. The apparatus according to claim 22, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a frequency domain location of the eDRS, the frequency domain location is used to indicate The enhanced physical broadcast channel is located on a non-central 6 physical resource block pair of system bandwidth. The apparatus according to claim 22, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used to indicate The enhanced physical broadcast channel occupies any one of the orthogonal frequency division multiplexing symbols. The apparatus according to claim 22, wherein when the eDRS includes an enhanced physical broadcast channel, and the information of the time-frequency resource includes a time domain location of the eDRS, the time domain location is used for the The enhanced physical broadcast channel occupies a second designated orthogonal frequency division multiplexing symbol. The apparatus according to claim 34, wherein said second designated orthogonal frequency division multiplexing symbol represents a symbol that does not include a cell reference signal; The cell reference signal includes at least an existing cell reference signal. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, the information of the time-frequency resource includes a frequency domain position of the eDRS, if the enhancement The synchronization signal and the enhanced physical broadcast channel are both transmitted on a central 6 physical resource block pair of system bandwidth, and the enhanced synchronization signal transmission priority is higher than the enhanced physical broadcast channel transmission priority. The apparatus according to claim 22, wherein when the eDRS includes an enhanced synchronization signal and an enhanced physical broadcast channel, and the information of the time-frequency resource includes a frequency domain location of the time-frequency resource, The enhanced synchronization signal and the enhanced physical broadcast channel are transmitted on a central 6 physical resource block pair or a non-central 6 physical resource block pair of a system bandwidth, the enhanced synchronization signal transmission priority and the enhancement The physical broadcast channel has the same transmission priority. The apparatus according to claim 22, wherein when the information of the time-frequency resource includes a time domain position of the time-frequency resource, a relative time relationship between the eDRS and an existing sounding reference signal (DRS) is fixed. . The apparatus according to claim 22, wherein when the information of the time-frequency resource includes a time domain location of the time-frequency resource, a relative time relationship between the eDRS and the DRS is flexibly changed according to a time criterion. The apparatus according to claim 39, wherein said time criterion comprises a time point at which the mechanism is said to be successful, and said eDRS available time period. An apparatus for enhancing sounding reference signal mapping, characterized by being applicable to a terminal operating in an unlicensed frequency band, the apparatus comprising: The receiving unit is configured to receive the eDRS sent by the base station according to the information of the time-frequency resource. The apparatus according to claim 41, wherein after the receiving the eDRS sent by the base station, the apparatus further comprises: And a blind detection unit, configured to perform blind detection on the received eDRS to decode the eDRS. An apparatus for enhancing sounding reference signal mapping, characterized by being applicable to a base station operating in an unlicensed frequency band, the apparatus comprising a processor, a memory and a transceiver; the processor, the memory and the transceiver passing through the bus Communicating; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver; The processor is configured to determine, by the transceiver, information about a time-frequency resource for carrying an enhanced sounding reference signal eDRS, where the eDRS includes an enhanced synchronization signal, an enhanced reference signal, according to a cell coverage enhancement capability, One or more of an enhanced physical broadcast channel and an enhanced data channel, the information of the time-frequency resource including one or more of an occupied resource size, a frequency domain location, and a time domain location of the eDRS; The processor is configured to map the eDRS by using the transceiver according to the information of the time-frequency resource; The processor is configured to send the time-frequency resource mapped with the eDRS to the terminal by using the transceiver. An apparatus for enhanced sounding reference signal mapping, characterized by being applicable to a terminal operating in an unlicensed frequency band, the apparatus comprising a processor, a memory, and a transceiver; the processor, the memory, and the transceiver passing through the bus Communicating; the memory is configured with computer code, the processor being capable of invoking the code to control the transceiver; The processor is configured to receive an eDRS sent by the base station by using the transceiver according to the information of the time-frequency resource.

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