WO2020063596A1

WO2020063596A1 - Communication method and device

Info

Publication number: WO2020063596A1
Application number: PCT/CN2019/107572
Authority: WO
Inventors: 张兴炜
Original assignee: 华为技术有限公司
Priority date: 2018-09-27
Filing date: 2019-09-24
Publication date: 2020-04-02
Also published as: CN110958095A; CN110958095B

Abstract

A communication method and device, for enabling the coexistence of a plurality of resource multiplexing methods in a scenario in which the plurality of resource multiplexing methods are all supported. The method proposed in the present application comprises: a first terminal device determining a resource multiplexing method, wherein the resource multiplexing method represents a resource multiplexing relationship between a control channel and a data channel, the control channel is used by the first terminal device to send control signaling to a second terminal device, and the data channel is used by the first terminal device to send data to the second terminal device; and the first terminal device indicating, by means of the control signaling, the resource multiplexing method to the second terminal.

Description

Communication method and device

Cross-reference to related applications

This application claims priority from a Chinese patent application filed on September 27, 2018 with the Chinese Patent Office, application number 201811133292.0, and application name "a communication method and device", the entire contents of which are incorporated herein by reference.

Technical field

The present application relates to the field of communication technologies, and in particular, to a communication method and device.

Background technique

In long-term evolution (LTE) -based device-to-device communication (D2D) communication or V2X (vehicle to everything) communication, for D2D device communication, the sending side sends control signaling first, and the control information The command carries the location of the time-frequency domain resource where the data is located, and then sends the data on the time-frequency domain resource indicated by the control signaling. The receiving side first blindly controls the control signaling. If the control signaling is received correctly and the identifier (ID) included in the control signaling matches the ID on the receiving side, the resource location in the time-frequency domain indicated by the control signaling Receive data.

In D2D communication, the resource multiplexing method used is time division multiplexing (TDM), and control signaling and data can occupy different subframes of the same subcarrier. In V2X communication, the resource multiplexing method used is frequency division multiplexing (TDM), and control signaling and data can occupy the same subframe of different subcarriers. In a 5G communication system, V2X communication can use either frequency division multiplexing or time division multiplexing. The existing communication methods provided by terminal devices are not applicable to scenarios supported by multiple resource multiplexing methods. How to support the coexistence of multiple resource reuse methods is a problem that needs to be solved.

Summary of the Invention

This application provides a communication method and device, which are used to solve the problem of how multiple resource reuse methods coexist in a scenario supported by multiple resource reuse methods.

In a first aspect, an embodiment of the present application provides a communication method, including: a first terminal device determining a resource multiplexing mode, where the resource multiplexing mode represents a resource multiplexing relationship between a control channel and a data channel, and the control channel is used for The first terminal device sends control signaling to the second terminal device, and the data channel is used by the first terminal device to send data to the second terminal device; the first terminal device sends the second terminal device to the second terminal device through the control signaling. The terminal device indicates the resource multiplexing mode.

According to the solution provided in the embodiment of the present application, the sender instructs the receiver to multiplex the resource, so that the receiver can determine the positional relationship between the data channel and the control channel. After decoding the control channel, the resource position of the data channel can be determined. retrieve data. It can be applied to scenarios supported by multiple resource reuse methods. The sending end no longer needs to indicate the time-frequency resource location of the data channel by means of a resource pattern, thereby saving signaling overhead.

In a possible design, the first terminal device indicating the resource multiplexing mode to the second terminal device through the control signaling includes: the first terminal device sends the resource multiplexing mode to the first terminal device through the control channel. Two terminal devices send the control signaling, where the control signaling carries first indication information; wherein the first indication information is used to indicate a resource multiplexing mode.

The above solution provides a method for displaying and indicating a resource multiplexing mode at a receiving end.

In a possible design, the first terminal device indicating the resource multiplexing mode to the second terminal device through the control signaling includes: the first terminal device sends the second terminal device through the control channel. The control signaling;

Wherein, there is a mapping relationship between the related information of the control signaling and the second indication information, the second indication information is used to indicate a resource multiplexing mode, and the related information of the control signaling includes at least one of the following:

Demodulating a cyclic offset of a demodulation reference signal DMRS sequence of the control channel carrying the control signaling;

The orthogonal convolutional code OCC of the DMRS sequence;

The root sequence of the DMRS sequence;

A scrambling code of the control signaling;

A cyclic redundancy check CRC mask of the control signaling;

A control channel unit CCE index number of the control channel;

A control resource set identifier of the control channel;

A search space identifier of the control channel;

A symbol position of the control channel;

The number of symbols of the control channel;

A time slot position of the control channel;

The number of time slots of the control channel;

The RB position of the control channel; or,

The number of RBs of the control channel.

In the above solution, by implicitly indicating the resource multiplexing method at the receiving end, compared with the display indication, it does not need to occupy transmission resources of control signaling, and further saves signaling overhead.

In a possible design, the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.

In a possible design, the control signaling carries at least one of the following information:

The number of symbols of the data channel, the number of time slots of the data channel, the time domain interval between the data channel and the control channel, the RB number of the data channel, or the frequency domain interval between the data channel and the control channel.

By further indicating the exact position of the data channel on the basis of indicating the resource multiplexing mode, compared with indicating the time-frequency resource position of the data channel through the time-frequency resource pattern in control signaling, the signaling overhead is reduced.

In a possible design, if the resource multiplexing mode is time division multiplexing, the control signaling carries the number of symbols of the data channel, the number of time slots of the data channel, or the data channel and At least one of a time domain interval of the control channel and the number of RBs of the data channel; or

If the resource multiplexing mode is frequency division multiplexing, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries the number of RBs of the data channel. 2. At least one of a frequency domain interval between the data channel and the control channel.

In a possible design, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are the same, the control signaling carries the number of symbols of the data channel, The number of time slots of the data channel, or at least one of a time domain interval between the data channel and the control channel; or,

If the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are different, the control signaling carries the number of RBs included in the data channel, and the control signaling also carries At least one of the number of symbols of the data channel, the number of time slots of the data channel, or a time domain interval between the data channel and the control channel; or,

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are the same, the control signaling carries the number of RBs of the data channel, the data channel and the control At least one of the frequency domain intervals of the channel; or,

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are different, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel The control signaling further carries at least one of the number of RBs included in the data channel, and a frequency domain interval between the data channel and the control channel.

Based on the indication resource multiplexing method and further based on the resource multiplexing method, the data required to indicate the exact position of the data channel is compared to the time-frequency resource position of the data channel indicated by the time-frequency resource pattern in control signaling. In other words, signaling overhead is reduced.

In a possible design, the control channel and the data channel are located in the same resource pool.

In a possible design, the same resource pool can support multiple resource reuse methods. The same resource pool can be allocated to terminal devices of multiple senders.

Exemplarily, the first terminal device determines a first resource multiplexing mode, where the first resource multiplexing mode represents a resource multiplexing relationship between the first control channel and the first data channel, and the first control channel is used for the first The terminal device sends control signaling to the terminal device 2. The first data channel is used by the first terminal device to send data to the terminal device 2. The first terminal device indicates to the terminal device 2 the first resource multiplexing mode.

The first terminal device determines a second resource multiplexing mode, where the second resource multiplexing mode represents a resource multiplexing relationship between the second control channel and the second data channel, and the second control channel is used by the first terminal device to the terminal Device 3 sends control signaling, and the second data channel is used by the first terminal device to send data to terminal device 3; the first terminal device indicates to terminal device 3 the second resource multiplexing mode; the second The resource multiplexing mode is different from the first resource multiplexing mode; the first control channel, the second control channel, the first data channel, and the second data channel are located in the same resource pool.

In a second aspect, an embodiment of the present application provides a communication method, including: a second terminal device receives control signaling sent by a first terminal device from a control channel; and the second terminal device determines resources according to the control signaling Multiplexing mode, the resource multiplexing mode represents a resource multiplexing relationship between the control channel and a data channel, the control channel is used for a first terminal device to send control signaling to a second terminal device, and the data channel is used for The first terminal device sends data to the second terminal device; and the second terminal device detects data sent by the first terminal device from the data channel according to the resource multiplexing mode.

In a possible design, the control signaling carries first indication information, and the determining, by the second terminal device, a resource multiplexing mode according to the control signaling includes: the second terminal device obtains from the control signaling The first indication information; wherein the first indication information is used to indicate a resource multiplexing mode.

In a possible design, the determining, by the second terminal device, a resource reuse mode according to control signaling includes:

Determining, by the second terminal device, the resource multiplexing mode according to a mapping relationship between related information of the control signaling and second instruction information, the second instruction information is used to indicate the resource multiplexing mode, and the control The signaling related information includes at least one of the following:

The orthogonal convolutional code OCC of the DMRS sequence;

The root sequence of the DMRS sequence;

A scrambling code of the control signaling;

A cyclic redundancy check CRC mask of the control signaling;

A control channel unit CCE index number of the control channel;

A control resource set identifier of the control channel;

A search space identifier of the control channel;

A symbol position of the control channel;

The number of symbols of the control channel;

A time slot position of the control channel;

The number of time slots of the control channel;

The RB position of the control channel; or,

The number of RBs of the control channel.

In a possible design, the control signaling carries at least one of the following parameters: the number of symbols of the data channel, the number of time slots of the data channel, the time domain interval between the data channel and the control channel, the number of RBs of the data channel, or The frequency domain interval between the data channel and the control channel.

In a possible design, the detecting, by the second terminal device, data sent by the first terminal device from the data channel according to the resource multiplexing mode includes: the second terminal device recovers data according to the resource. Detecting data sent by the first terminal device from the data channel by using a mode and a parameter carried by the control signaling.

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are the same, the control signaling carries the number of RBs of the data channel and / or the data channel and the The frequency domain interval of the control channel; or

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are different, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel The control signaling also carries the number of RBs included in the data channel and / or a frequency domain interval between the data channel and the control channel.

In a third aspect, an embodiment of the present application provides a communication method, including:

The network device determines at least one frequency domain resource; wherein the at least one frequency domain resource is used by the first terminal device to send control signaling and / or data to the second terminal device, and different frequency domain resources have different resource reuse modes. The resource multiplexing mode is used to indicate a multiplexing relationship between a resource carrying the control signaling and a resource carrying the data;

Sending, by the network device, resource configuration information to the first terminal device, and sending first indication information to the first terminal device and the second terminal device, the resource configuration information including the at least one frequency domain resource The first indication information is used to indicate a resource multiplexing manner of the at least one frequency domain resource.

Through the above scheme, different resources correspond to different resource multiplexing methods, so that the sending end sends control signaling and data on different resources according to different resource multiplexing methods, and the receiving end according to the received control signaling is located The resource can determine the resource multiplexing mode, which is suitable for scenarios that are supported by multiple resource multiplexing modes, and does not need to be instructed in control signaling, which saves signaling overhead.

In a possible design, before the network device determines at least one frequency domain resource, the method further includes: receiving, by the network device, second instruction information sent by the first terminal device, where the second instruction information is used to indicate A service type of a service processed by the first terminal device or a capability of the first terminal device; and the determining, by the network device, at least one frequency domain resource includes: the network device determining the at least one frequency domain resource according to the second instruction information A frequency domain resource.

In a possible design, the capability of the first terminal device includes a processing delay of the first terminal device and / or a cache capability of the first terminal device.

In a possible design, the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.

In a possible design, the sending, by the network device, resource configuration information to the first terminal device and first instruction information to the first terminal device includes:

When the first indication information is used to indicate a resource reuse mode of at least one BWP, the network device sends BWP configuration information to the first terminal device, where the BWP configuration information includes the resource configuration information and all resources. Mentioned first indication information; or

When the first indication information is used to indicate a resource multiplexing manner of the at least one carrier, the network device sends carrier configuration information to the first terminal device, where the carrier configuration information includes the resource configuration information And the first indication information.

In the above solution, when BWP configuration or carrier configuration is performed, a resource reuse method corresponding to different BWP or carrier is instructed, thereby saving signaling overhead.

In a fourth aspect, an embodiment of the present application provides a communication method, including: a first terminal device receiving resource configuration information sent by a network device, and receiving first indication information sent by the network device; wherein the resource configuration information includes: Information of at least one frequency domain resource configured by a terminal device including the first terminal device, the first indication information is used to indicate a resource multiplexing manner of the at least one frequency domain resource, and different frequency domain resources correspond Different resource multiplexing modes, the resource multiplexing modes are used to indicate the multiplexing relationship between resources carrying control signaling and resources carrying data; the first terminal device is based on the information of the at least one frequency domain resource And first indication information, sending control signaling and / or data to the second terminal device through one frequency domain resource among the at least one frequency domain resource.

In a possible design, the receiving, by the first terminal device, first indication information sent by a network device includes:

When the first indication information is used to indicate a resource reuse mode of the at least one BWP, the first terminal device receives BWP configuration information sent by the network device, and the BWP configuration information includes the resource configuration Information and the first indication information; or,

When the first indication information is used to indicate a resource multiplexing manner of the at least one carrier, the first terminal device receives carrier configuration information sent by the network device, and the carrier configuration information includes the resource configuration The information and the first indication information.

In a possible design, before the first terminal device receives the resource configuration information sent by the network device, the method further includes:

The first terminal device sends second instruction information to the network device, where the second instruction information is used to indicate a service type of a service processed by the first terminal device or a capability of the first terminal device.

In a fifth aspect, an embodiment of the present application provides a communication method, including: a second terminal device receiving first instruction information sent by a network device, and receiving a control instruction sent by the first terminal device; wherein the first instruction information A resource multiplexing mode used to indicate at least one frequency domain resource. The resource multiplexing modes corresponding to different frequency domain resources are different. The resource multiplexing mode is used to indicate a difference between a resource carrying control signaling and a resource carrying data. Multiplexing relationship; the first terminal device determines a resource carrying the data according to the resource carrying the control instruction and the first instruction information, and detects the data from the resource carrying the data.

In a sixth aspect, a device is provided. The apparatus provided in this application has a function for realizing the behavior of a terminal device or a network device in the above method aspect, and includes components corresponding to the steps or functions described in the above method aspect. The steps or functions may be implemented by software, or by hardware (such as a circuit), or by a combination of hardware and software.

In a possible design, the above device includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform a corresponding function of the terminal device in the foregoing method. For example, a resource multiplexing mode is determined, and the resource multiplexing mode is indicated to a second terminal device through the control signaling. The communication unit is configured to support the device to communicate with other devices to implement receiving and / or transmitting functions. For example, sending control signaling and data.

Optionally, the device may further include one or more memories, and the memory is configured to be coupled to the processor, and stores the program instructions and / or data necessary for the device. The one or more memories may be integrated with the processor, or may be separately provided from the processor. This application is not limited.

The device may be a smart terminal or a wearable device, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may be an input / output circuit or an interface.

The device may also be a communication chip. The communication unit may be an input / output circuit or an interface of a communication chip.

In another possible design, the device includes a transceiver, a processor, and a memory. The processor is used to control a transceiver or an input / output circuit to send and receive signals, the memory is used to store a computer program, and the processor is used to run the computer program in the memory, so that the device executes any one of the first aspect or the first aspect The method implemented by the first terminal device in the possible implementation manner, or the method implemented by the second terminal device in any of the second aspect or the second aspect may be implemented, or the method implemented in the fourth aspect or any of the fourth aspect may be implemented The method completed by the first terminal device in the implementation manner may be implemented, or the method completed by the second terminal device in any of the fifth aspect or the fifth implementation manner may be performed.

In a possible design, the above device includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform a corresponding function of the network device in the foregoing method. For example, a frequency domain resource is determined, and a frequency domain resource and a resource reuse mode are indicated to a terminal device. The communication unit is configured to support the device to communicate with other devices to implement receiving and / or transmitting functions. For example, sending resource configuration information and first indication information used to indicate a resource multiplexing manner of the at least one frequency domain resource.

Optionally, the apparatus may further include one or more memories, where the memories are configured to be coupled to the processor, and store the program instructions and / or data necessary for the network device. The one or more memories may be integrated with the processor, or may be separately provided from the processor. This application is not limited.

The device may be a base station, gNB, TRP, or the like, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may be an input / output circuit or an interface.

In another possible design, the device includes a transceiver, a processor, and a memory. The processor is used to control the transceiver or the input / output circuit to send and receive signals, the memory is used to store the computer program, and the processor is used to run the computer program in the memory, so that the device executes the third aspect or any one of the third aspect. The method implemented by the network device in the implementation mode.

According to a seventh aspect, a system is provided, and the system includes the foregoing terminal device and network device.

According to an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program including instructions for executing the first aspect or the method in any possible implementation manner of the first aspect, or including using Instructions for performing the second aspect or the method in any one of the possible implementations of the second aspect, or including instructions for performing the method in the fourth aspect or any one of the possible implementations of the fourth aspect, or including using Instructions for performing the method in the fifth aspect or any one of the possible implementation methods of the fifth aspect.

In a ninth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program including instructions for executing the third aspect or the method in any one of the possible implementation manners of the third aspect.

According to a tenth aspect, a computer program product is provided. The computer program product includes computer program code that, when the computer program code runs on a computer, causes the computer to execute any one of the first aspect or the first aspect. The method in the possible implementation manner, or the method in the second aspect or any of the possible implementation methods in the second aspect, or the method in the fourth aspect or any of the possible implementation methods in the fourth aspect, or the The method in any one of the five aspects or the fifth aspect.

According to an eleventh aspect, a computer program product is provided. The computer program product includes: computer program code that, when the computer program code runs on a computer, causes the computer to execute any of the third aspect and the third aspect One possible implementation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic architecture diagram of a communication system according to an embodiment of the present application; FIG.

FIG. 1B is a schematic diagram of a correspondence relationship between a subcarrier interval and a symbol length according to an embodiment of the present application; FIG.

2 is a schematic diagram of a D2D scene provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of scheduling a D2D scene according to an embodiment of the present application; FIG.

4 is a schematic diagram of V2X provided by an embodiment of the present application;

5 is a schematic diagram of a resource pool to which an existing SA and data belongs according to an embodiment of the present application;

6 is a schematic diagram of an SA and a data sharing resource pool provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a resource reuse manner provided by an embodiment of the present application; FIG.

8 is a schematic flowchart of a communication method according to an embodiment of the present application;

9 is a schematic diagram of a resource reuse relationship between a control channel and a data channel according to an embodiment of the present application;

10 is a schematic flowchart of another communication method according to an embodiment of the present application;

FIG. 11 is a schematic diagram of different resource reuse modes corresponding to different resource pools provided in the embodiment of the present application; FIG.

12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

13 is a schematic structural diagram of a network device according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application.

detailed description

The embodiments of the present application can be applied to, but not limited to, a fifth generation mobile communication (5G) system, such as a new radio (NR) system, and can also be applied to a 4G system, such as an LTE system, long term evolution- Advanced (LTE-A) system, enhanced long-term evolution technology (eLTE), and other communication systems can also be extended to wireless fidelity (WiFi), global microwave interconnection access (worldwide interoperability for microwave access (wimax), future wireless communication systems, and related cellular systems such as 3GPP. The embodiments of the present application can be, but are not limited to, a D2D communication scenario, a V2X communication scenario, a machine type communication (MTC) / machine to machine (M2M) communication scenario. To facilitate understanding of the embodiments of the present application, a communication system shown in FIG. 1A is taken as an example to describe in detail a communication system applicable to the embodiments of the present application. FIG. 1A is a schematic diagram of a communication system applicable to a communication method according to an embodiment of the present application. As shown in FIG. 1A, the communication system includes a network device 11, a first terminal device 12, and a second terminal device 13. The network device 11 may be configured with multiple antennas, and the first terminal device 12 and the second terminal device 13 may also be configured. There are multiple antennas.

It should be understood that the network device 102 or the network device 104 may further include a plurality of components related to signal transmission and reception (for example, a processor, a modulator, a multiplexer, a demodulator or a demultiplexer, etc.). In addition, this application does not specifically limit the number of network devices and the number of terminal devices included in the system.

This application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, and the like. It should be understood and understood that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.

In addition, in the embodiments of the present application, the word "exemplary" is used as an example, illustration, or description. Any embodiment or design described as "example" in this application should not be construed as more preferred or advantageous over other embodiments or designs. Rather, the term usage example is intended to present the concept in a concrete way.

In the embodiments of the present application, information, signal, message, and channel may sometimes be mixed. It should be noted that when the difference is not emphasized, the meanings to be expressed are the same. "Of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference is not emphasized, the meanings to be expressed are the same.

In the following, the technical concepts in this application are explained so as to facilitate understanding by those skilled in the art.

(1) Network equipment

In the embodiment of the application, the network device may be referred to as a radio access network (RAN) device, and may be, for example, a base station, a transmit and receive point (transmit and receive point (TRP)), or an access node. Specifically, it can be a base station in a global mobile communication (GSM) system or a code division multiple access (CDMA) system, or a wideband code division multiple access (WCDMA). ) The base station (NodeB) in the system can also be an evolutionary base station (eNB or eNodeB) in the LTE system, or a base station device, small base station device, wireless access node (WiFi AP), Wireless interoperability microwave access base stations (worldwide interoperability for microwave access base stations, WiMAX, BS, etc.) are not limited in this application.

(2) Terminal equipment

In the embodiment of the present application, the terminal device may be a D2D device, may be an MTC / M2M device, or may be a terminal device applied to the Internet of Vehicles. For example, the terminal device may be a terminal device connected to the Internet of Vehicles. Terminal equipment; terminal equipment, also known as access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device , User agents, or user devices. Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital processing (PDA), and wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, IoT terminal devices such as fire detection sensors, smart water / electric meters, factory monitoring equipment, etc., or IoT terminal devices .

(3) Type of business

Service types can include, but are not limited to, ultra-reliable ultra-low latency communication (uRLLC) types, enhanced mobile broadband (eMBB) types, and massive machine type connections (massive machine type) connection, mMTC) type. Future communications may divide more business types.

eMBB type, for high-data-rate, high-mobility services; uRLLC type, for high-reliability and low-latency services; mMTC type, for high-requirements, small data volumes, tolerable delays and infrequent access Business (such as sensor, wearable device business).

For example, the URLLC type can be applied to scenarios such as driverless, industrial control, etc., which require low latency and high reliability. The specific requirements for low latency are end-to-end 0.5ms delay, air interface information interaction back and forth 1ms delay, high reliability The specific requirement is that the block error rate BLER reaches 10 ^ (-5), that is, the correct reception rate of the data packet reaches 99.999%.

(4) Subcarrier interval

In 5G NR, multiple subcarrier intervals are introduced, and different carriers can have different subcarrier intervals. The baseline is 15kHz, which can be 15kHz * 2n, where n is an integer from 3.75, 7.5 to 480kHz, and generally includes 8 types. Correspondingly, there are various symbol lengths and slot lengths in 5G NR. An example shown in FIG. 1B is a symbol length corresponding to different subcarrier intervals.

In the time domain, in 5G NR, a time slot can be composed of at least one of downlink transmission, guard interval GP, and uplink transmission; the composition of such a time slot is called a different slot format (Slot Format Indicator, SFI), There may be up to 256 types. In the frequency domain, since the 5G NR single-carrier bandwidth can reach 400 MHz, a bandwidth part (BWP) is also defined in a carrier, which can also be referred to as a carrier bandwidth part (carrier bandwidth part). BWP includes several consecutive resource units in the frequency domain, such as resource blocks (RBs). The bandwidth part may be a downlink or an uplink bandwidth part, and the terminal device receives or sends data on a data channel within the activated bandwidth part.

Network devices can configure multiple DL / UL BWPs for terminal devices through high-level signaling, such as radio resource control (RRC), and activate one of the DL / UL BWPs (uplink and downlink There is one), so the UE has multiple BWPs configured with downlink (downlink, DL) / uplink (uplink, UL) in one carrier, but only one activates DL / UL BWP. When the activated BWP needs to be switched, the network device can switch the activated BWP from BWP1 to BWP2 through downlink control information (DCI). The current agreement stipulates that DCI can only instruct to switch to activate the BWP in the downlink. After receiving the physical downlink control channel (PDCCH), the terminal device switches to the new BWP to receive the physical downlink shared channel (PDSCH). ); The uplink scheduling signaling instructs to switch the uplink activated BWP. After receiving the PDCCH, the terminal device switches to the new BWP to send a physical uplink shared channel (physical uplink shared channel, PUSCH).

(5) D2D communication

In order to improve the spectrum utilization rate and maximize the use of the radio frequency capabilities of the existing terminal equipment, the D2D communication link can be called a side link (Sidelink, SL), which can reuse the spectrum resources of the existing mobile communication network. In order not to interfere with the terminal equipment of the existing network, D2D communication does not use the LTE-A downlink (link from eNB to D2D equipment) spectrum resources, but only reuses the uplink of the LTE-A system (D2D equipment to eNB link) Spectrum resources, because relatively speaking, the anti-interference ability of the base station is much better than ordinary D2D equipment. D2D equipment occupies uplink spectrum resources and can adopt time division multiplexing, so there is no need to support simultaneous transmission and reception, and either send or receive at a moment.

In the Rel-12 / 13 version, D2D scenes can be divided into 3 types, which are network coverage, partial network coverage, and no network coverage, as shown in Figure 2. In a network coverage scenario, the D2D device is within the coverage of the base station. In some network coverage scenarios, some D2D devices are in the coverage area of the base station, and some D2D devices are not in the coverage area of the base station. In the scenario without network coverage, all D2D devices are not in the coverage area of the base station. If the D2D device can hear the signal of the base station, it is the D2D device within the network coverage. If a D2D device can hear the signals of other D2D devices in the network coverage, it is part of the network coverage D2D devices. If the first two signals cannot be received by the D2D device, it is a D2D device outside the network coverage.

D2D communication is divided into two types: D2D device discovery and D2D device communication. D2D device discovery only sends discovery signals. Specifically, it sends discovery signals on the physical sidelink discovery channel (PSDCH). D2D devices communicate control signaling and data. Control signaling, that is, SA, has different SCI formats, and is carried on the physical side chain control channel (PSCCH) for transmission; data is carried on the physical side chain shared channel (PSSCH) for transmission. In addition, compared to the uplink (UL) and downlink (DL) in LTE, the D2D communication link is called a side link (Sidelink, SL).

There are two modes of resource allocation for D2D device communication. Mode 1 is a centralized control method. D2D resources are allocated by a central control device, such as a base station or a relay station, and resources are allocated to the sender's D2D device for use by scheduling. The centralized control-type resource allocation method is mainly aimed at scenarios with network coverage. Mode 2 is a distributed resource multiplexing method based on competition. The sender D2D device obtains resources for sending control signaling and data from the resource pool in a competitive manner. In the scenario with network coverage, the resource pool is an entire block of resources divided by the base station. The sender's D2D device competes for small blocks of resources in this entire block of resources. In a scenario without network coverage, the resource pool is a predefined system bandwidth that the sender's D2D device can obtain, and the sender's D2D device competes for resources under the predefined system bandwidth.

There are currently two types of resource allocation methods for D2D device discovery. Type 1 is a distributed resource multiplexing method based on competition. The D2D device of the sender obtains resources for sending discovery signals from the resource pool in a competitive manner. In the scenario with network coverage, the resource pool is an entire block of resources divided by the base station. The sender's D2D device competes for small blocks of resources in this entire block of resources. In the scenario without network coverage, the resource pool is that the D2D device can obtain a predefined system bandwidth, and the sender's D2D device competes for resources under the predefined resource. Type 2 is a centralized control method. The resources for sending discovery signals from D2D devices are allocated by a central control device, such as a base station or a relay station. Resources are allocated to the sender's D2D devices through scheduling, and they are controlled centrally. Distributed resource allocation is mainly targeted at scenarios with network coverage.

For the competition-based resource allocation mode of Mode2 and Type1, because there is no central controller coordination, different D2D devices may compete for the same resources, so conflicts occur; when the number of D2D devices is large, the probability of this conflict situation is very high. high.

For D2D device communication, the sender's D2D device first sends control signaling SA (repeatedly sent twice), which carries information about the data, and then sends data (repeatedly sent 4 times). Figure 3 shows a schematic diagram of Mode1. Mode2 is similar, except that there is no base station, and the resources are randomly selected by the sender's D2D device; the receiver's D2D device first blindly checks the SA. If the SA is received correctly and the ID in the SA is at least one ID in the ID list of the receiver's D2D device If they match, the data is received according to the information about the data carried in the SA.

The format used by SA can be SCI format 0, and the fields (data related information) included in SCI format 0 are shown in Table 1 below.

Table 1

(6) V2X communication

V2X communication is a major application of D2D communication. V2X specifically includes three application requirements of V2V, V2P, and V2I / N, as shown in Figure 4. V2V refers to LTE-based vehicle-to-vehicle communication; V2P refers to LTE-based vehicles and people (including pedestrians, cyclists, drivers, or passengers); V2I refers to LTE-based vehicles and roadside devices (road side unit, RSU) communication, and another type of V2N can be included in V2I. V2N refers to the communication between a LTE-based vehicle and a base station / network.

There are two types of RSUs. One is a terminal-type RSU. Because it is placed on the roadside, the terminal-type RSU is in a non-mobile state and does not need to consider mobility. The other is a base station-type RSU that can communicate with it. Vehicles provide timing synchronization and resource scheduling.

For V2X communication, in order to ensure the delay requirement, the terminal device of the sender may send control signaling SA and data at the same time in one subframe, as shown in Figure 5, where the resources carrying control signaling and the resources carrying data belong to Different resource pools. In FIG. 5, a resource pool carrying control signaling is referred to as an SA resource pool (SA pool), and a resource pool carrying data is referred to as a data resource pool (data pool).

The receiver's terminal device first blindly detects the SA and needs to buffer the data of the same subframe, because it is possible that the data scheduled by the SA is in the same subframe. If the SA is correctly received and the ID in the SA matches the ID of the receiver, Determine whether to demodulate / decode the buffered data (same sub-frame) or receive subsequent data (different sub-frames) according to the related information of the data carried in it.

In order to reduce the peak-to-average power ratio (PAPR), for a UE, the SA and data resources are preferably continuous. A feasible method is: the SA and the data share a resource pool, and the SA and the data can be continuously placed in the frequency domain. As shown in FIG. 6, the SA and data of UE1 and UE2 share a resource pool.

(7) Resource reuse mode

In 5G NR, V2X communication can support multiple resource multiplexing modes for control channels occupied by control signaling and data channels occupied by data. The resource multiplexing modes can be TDM, FDMRS, or embedded multiplexing.

TDM may also include two types, namely, TDM and the frequency domain bandwidth of the data channel and the control channel are the same, and TDM and the frequency domain bandwidth of the data channel and the control channel are different. FDM may also include two types, which are FDM and the time domain length of the data channel and the control channel are the same, and FDM and the time domain length of the data channel and the control channel are different.

Exemplarily, the resource reuse mode may include the following five modes, as shown in FIG. 7.

Method 1: TDM and the frequency domain bandwidth of the data channel and the control channel are the same, that is, C1 and D1 in FIG. 7.

Method 2: TDM and the frequency domain bandwidth of the data channel and the control channel are different, but the starting position of the data frequency domain is the same as the control, that is, C2 and D2 in FIG. 7.

Method 3: FDM and the time domain length of the data channel and the control channel are the same, that is, C3 and D3 in FIG. 7.

Method 4: The data channel and the control channel are embedded multiplexing methods. The control channel is in the area of the data channel, that is, C4 and D4 in FIG. 7. As shown in FIG. 7, the control channel occupies the resources of the data channel. When transmitting data, data is transmitted on the resources of the data channel other than the resources occupied by the control channel.

Method 5: FDM and the time domain length of the data and control are not the same, but the starting position of the data time domain is the same as the control, that is, C5 and D5 in Figure 7.

In addition, it should be noted that in the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship between related objects, and indicates that there can be three kinds of relationships. For example, A and / or B can indicate: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are an "or" relationship. "At least one or more of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one (a) of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

In the 5G communication system, since the above-mentioned multiple resource multiplexing methods can be adopted, and the existing communication methods between the terminal devices are not applicable to scenarios supported by multiple resource multiplexing methods. In a scenario where at least two resource multiplexing modes are supported at the same time, how to achieve reasonable resource allocation and how to indicate to the terminal of the receiver the resource multiplexing mode between the control channel and the data channel are issues that need to be addressed in this application.

Based on this, the embodiments of the present application provide a communication method and device, which are used to solve the problem in the existing technology that cannot be applied to scenarios supported by multiple resource reuse methods. Among them, the method and the device are based on the same inventive concept. Since the principle of the method and the device for solving the problem is similar, the implementation of the device and the method can be referred to each other, and duplicated details will not be repeated.

In order to solve the above problem, a feasible solution is to instruct the receiver to multiplex the resources of the receiver, and another feasible solution is to instruct the resources corresponding to the resource pools of the sender and the receiver through the frequency domain resource configuration by the network device. In the multiplexing mode, the frequency domain resources can be a resource pool or a BWP or a carrier. Different frequency domain resources correspond to different resource reuse methods.

FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present application. The scheme described in FIG. 8 is a way of indicating the resources of the receiver by the sender. To describe the solution, the terminal device of the sender is referred to as the first terminal device, and the terminal device of the receiver is referred to as the second terminal device in the embodiments of the present application. It should be noted that the terminal device of the receiver may be one or more, which is not specifically limited in the embodiment of the present application, and the terminal device of one receiver is taken as an example for description.

S101. A first terminal device determines a resource multiplexing mode, where the resource multiplexing mode represents a resource multiplexing relationship between a control channel and a data channel, and the control channel is used by the first terminal device to send control signaling to a second terminal device. The data channel is used by the first terminal device to send data to the second terminal device.

S102. The first terminal device indicates the resource multiplexing mode to the second terminal device through control signaling.

The method may further include:

S103. The first terminal device sends data to the second terminal device through the data channel according to the resource multiplexing mode. In other words, the first terminal device can determine the time-frequency resource location of the data channel used to send data according to the resource multiplexing mode, so as to send data to the second terminal device through the data channel.

Wherein, when the first terminal device sends the control signaling and data to the second terminal device, they may be sent at the same time or may not be sent at the same time, and it is determined according to the resource multiplexing mode.

S104. The second terminal device receives control signaling sent by the first terminal device from a control channel.

S105. The second terminal device determines a resource multiplexing mode according to the control signaling.

The time sequence of S103, S104, and S105 is not specifically limited. S103 can be earlier than S104, or S103 is later than S104, or later than S105.

S106. The second terminal device detects data sent by the first terminal device from the data channel according to the resource multiplexing mode. In other words, the second terminal device can determine the position of the time-frequency resource occupied by the data channel according to the resource multiplexing mode, thereby detecting data on the determined data channel.

In a feasible example, the control channel and the data channel are located in the same resource pool. The resources occupied by the control channel may be located at a specific location in the resource pool, and the specific location may be a specific frequency domain location, or a specific time domain location, or a specific time-frequency location. Take the control channel located in a specific frequency domain position of the resource pool as an example, as shown in the dotted line in FIG. 9. The first terminal device of the sender sends the sidelink control channel at this specific position, so that the second terminal device of the receiver only needs to receive the sidelink control channel at this specific position, reducing the work of blindly detecting the control channel. the amount. The position of the data channel in the resource pool can be unlimited, as long as the resources that are not occupied by the control channel can be used as data channels to send data.

In a feasible example, the control channel at a specific location of the resource pool may be pre-configured by the network device. For example, the network device sends resource configuration information to the first terminal device and the second terminal device. The resource configuration information includes specific location information of a resource pool that can be occupied by the control channel. The first terminal device may determine a control channel according to the resource configuration information, and send control signaling to the second terminal device through the determined control channel.

When the control channel and the data channel are located in the same resource pool, the one resource pool can support multiple resource multiplexing modes. For example, the resource multiplexing relationship between the control channel and the data channel in the resource pool may be TDM, FDM, or an embedded multiplexing mode. Exemplarily, the resource pool can support the five resource reuse modes shown in FIG. 7 at the same time. Referring to FIG. 9, it shows the time-frequency resource positions of the control channel and the data channel in the resource pool. Among them, the multiplexing relationship between the control channel C1 and the data channel D1 is the first method of resource multiplexing; the multiplexing relationship between the control channel C2 and the data channel D2 is the third method of resource multiplexing; the control channel C3 and the data channel The multiplexing relationship between D3 is the second method of resource multiplexing; the multiplexing relationship between the control channel C4 and the data channel D4 is the fourth method of resource multiplexing.

The receiver's terminal device can be one, multiple, or unlimited, and the corresponding communication mode is unicast, multicast, or broadcast. For example, when the terminal device 0 of the sender sends on link A, the terminal device 1 of the receiver may receive on link A in the unicast scenario, and the terminal device 2 of the receiver and the receiver of the receiver in the multicast scenario. Terminal device 3 receives on link A. In a broadcast scenario, any receiving device X that can receive the signal from terminal device 0 of the sender receives on link A.

Unicast can have multiple groups of links. That is, for a sending terminal device 0, it can communicate with terminal devices of multiple receivers independently. For example, when terminal device 0 of the sender sends on link A, terminal device 1 of the sender receives on link A, and when terminal device 0 of the sender sends on link B, terminal device 2 of the receiver sends on link Receive on B.

Multiple groups of unicast can use different multiplexing methods. For example, as the sender's terminal device 1, send control signaling and data to the receiver's terminal device 2 and terminal device 3. For example, the terminal device 1 is sending to the terminal device. 2 When sending control signaling and data, control channel C1 and data channel C1 in the resource pool can be used. When terminal device 1 sends control signaling and data to terminal device 3, control channel C3 and data channel in the resource pool can be used. C3. A resource pool can be a resource configured to be shared by multiple senders. Exemplarily, when terminal device a sends control signaling and data to terminal device c, control channel C2 and data channel C2 of the resource pool may be used, and when terminal device b sends control signaling and data to terminal device d, resources may be used Control channel C4 and data channel C4 of the pool.

In a feasible implementation manner, the first terminal device indicating the resource multiplexing mode to the second terminal device may be implemented in the following manner:

A first feasible manner: The first terminal device indicates a resource multiplexing manner by displaying a signaling indication method.

The second feasible way: the first terminal device indicates the resource reuse mode by using an implicit indication method.

For the first feasible manner, the control signaling may carry first indication information, and the first indication information is used to indicate a resource multiplexing manner. For example, the control signaling may include a resource multiplexing field, and the resource multiplexing field includes first indication information. When the first indication information has different values, it indicates different resource multiplexing modes.

For example, when there are four resource multiplexing modes, mode one to mode four, the resource multiplexing field can occupy 2 bits. Exemplarily, 00 indicates the first method: TDM and the frequency channel bandwidth of the data channel and the control channel are the same; 01 indicates the second method: TDM but the frequency channel bandwidth of the data channel and the control channel are different; 10 indicates the third method: FDM and the data and The length of the time domain of the control is the same; 11 indicates the fourth method: the data channel and the control channel are embedded multiplexed, and the control channel is in the area of the data channel. Of course, when there are more types of resource multiplexing modes, more bits can be used to indicate more resource multiplexing modes. For example, 100 indicates the fifth mode: FDM and the time domain length of the data and control are different; etc.

After the first terminal device determines the resource multiplexing mode, the first terminal device sends control signaling to the second terminal device through the control channel, where the control signaling carries the first instruction information. When the second terminal device receives the control signaling sent by the first terminal device from the control channel, determining the resource multiplexing mode indicated by the first terminal device may be implemented in the following manner: the second terminal device receives the control signal from the control Order analysis to obtain the first indication information, where the first indication information is used to indicate a resource multiplexing mode.

For the second possible way:

The first terminal device and the second terminal device may be configured in advance with a mapping relationship between the related information of the control signaling and the second indication information. The second indication information is used to indicate a resource multiplexing mode. Exemplarily, the second indication information may be an identifier of a resource reuse mode, such as an index of the resource reuse mode.

The related information of the control signaling may include at least one of the following: the related information of the control signaling includes at least one of the following:

The orthogonal convolutional code OCC of the DMRS sequence;

The root sequence of the DMRS sequence;

A scrambling code of the control signaling;

A cyclic redundancy check CRC mask of the control signaling;

A control channel unit CCE index number of the control channel;

A control resource set identifier of the control channel;

A search space identifier of the control channel;

A symbol position of the control channel;

The number of symbols of the control channel;

A time slot position of the control channel;

The number of time slots of the control channel;

The RB position of the control channel; or,

The number of RBs of the control channel.

If the amount of related information of the control signaling is greater than the number of resource multiplexing modes, the mode of the resource multiplexing mode can be modulated using the related information of the control signaling. There is a mapping relationship between the result after the modulus and the resource reuse mode.

If the amount of related information of the control signaling is smaller than the number of resource multiplexing modes, a mode of the related information of the control signaling can be modulated by using the resource multiplexing mode. There is a mapping relationship between the result after the modulus and the related information of the control signaling.

In a possible example, the first terminal device may use a cyclic offset CS or an orthogonal convolutional code OCC or a root sequence of a DMRS for demodulating a control channel to indicate a resource multiplexing manner. Wherein, a cyclic offset of a demodulation reference signal DMRS sequence used to demodulate the control channel indicates a resource multiplexing mode; or an orthogonal convolutional code OCC of the DMRS sequence indicates a resource multiplexing Mode; or, a root sequence of the DMRS sequence indicates a resource multiplexing mode.

For example, TDM is indicated when CS = 0, FDM is indicated when CS = 6, and so on. Alternatively, CS = 0 indicates the first method, and CS = 6 indicates the third method.

Exemplarily, the resource multiplexing mode corresponding to the CS or OCC of the DMRS sequence can be pre-configured by the network device to the sender and receiver.

When the first terminal device indicates the resource multiplexing mode to the second terminal device through the cyclic shift of the DMRS of the control channel, a cyclic shift of the DMRS sequence used to demodulate the control channel indicates a resource multiplexing mode, thereby When determining the resource multiplexing mode indicated by the first terminal device, the second terminal device may determine the resource multiplexing mode according to the cyclic offset CS of the DMRS adopted by the demodulation control channel.

When the first terminal device indicates the resource reuse mode to the second terminal device through the OCC of the DMRS of the control channel, the OCC of a DMRS sequence indicates a resource reuse mode, so that the second terminal device determines the resource indicated by the first terminal device. In the multiplexing mode, the resource multiplexing mode may be determined according to the OCC of the DMRS.

When the first terminal device indicates the resource multiplexing mode to the second terminal device through the root sequence of the DMRS of the control channel, the root sequence of a DMRS sequence indicates a resource multiplexing mode, so that the second terminal device determines the indication of the first terminal device. When the resource multiplexing method is used, the resource multiplexing method may be determined according to the root sequence of the DMRS.

In another possible example, the first terminal device may indicate the resource reuse mode to the second terminal device through a scrambling code of control signaling or a cyclic redundancy check (CRC) mask of the control signaling. . For example, a scrambling code of the control signaling indicates a resource reuse mode; or, a CRC mask used to check the control signaling indicates a resource reuse mode.

Exemplarily, the resource multiplexing manner corresponding to the scrambling code or the CRC mask may be pre-configured by the network device to the sender and the receiver.

When the first terminal device can indicate the resource multiplexing mode to the second terminal device through the scrambling code of the control signaling, one scrambling code of the control signaling indicates a resource multiplexing mode, so that the second terminal device determines the first When the resource multiplexing mode indicated by the terminal device, the resource multiplexing mode may be determined according to a scrambling code used to decode the control signaling.

When the first terminal device can indicate the resource multiplexing mode to the second terminal device through the CRC mask of the control signaling, a CRC mask of the control signaling indicates a resource multiplexing mode, so that the second terminal device is determining In the resource multiplexing mode indicated by the first terminal device, the resource multiplexing mode may be determined according to a CRC mask used for decoding the control signaling.

In yet another possible example, the first terminal device may indicate a resource multiplexing manner by using resources occupied by a control channel carrying control signaling.

The resources occupied by the control channel may include at least one of the following:

CCE index of control channel unit of control channel, control resource set identifier (CORESET ID) of control channel, search space identifier of control channel, symbol position of control channel, number of symbols of control channel, slot position of control channel, control channel The number of time slots, the number of RBs of the control channel, and the position of the RBs of the control channel.

There is a mapping relationship between the resources occupied by the control channel described in at least one of the foregoing and the second indication information, and the second indication information is used to indicate a resource multiplexing mode. When the second terminal device obtains the control signaling from the control channel, it determines the resources occupied by the control channel, so as to determine the resource multiplexing mode based on the mapping relationship between the resources occupied by the control channel and the second indication information.

The mapping relationship between the resources occupied by the control channel and the second indication information may be pre-configured by the network device to the sender and the receiver.

As an example, there is a mapping relationship between a control channel unit CCE index number of the control channel and second indication information, where the second indication information is used to indicate the resource multiplexing mode; the second terminal device determines the first When the resource multiplexing mode is indicated by the terminal device, the second terminal device may determine the resource multiplexing mode according to a control channel unit CCE index number of the control channel.

Alternatively, a mapping relationship exists between the control resource set identifier of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device may The control resource set identifier of the control channel determines the resource multiplexing mode.

Alternatively, there is a mapping relationship between the search space identifier of the control channel and the second indication information. When the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device may The search space identifier of the control channel determines the resource multiplexing mode.

Alternatively, a mapping relationship exists between the symbol position of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device may The symbol position of the channel determines the resource multiplexing mode.

Alternatively, there is a mapping relationship between the number of symbols of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device according to the control channel The number of symbols determines the resource multiplexing mode.

Or, there is a mapping relationship between the number of symbols and the position of the control channel and the second indication information; when the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device determines The number of symbols and the position of the symbols of the control channel determine the resource multiplexing mode.

Alternatively, there is a mapping relationship between the slot position of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device according to the control channel Determines the resource multiplexing mode at the slot position of.

Alternatively, there is a mapping relationship between the number of timeslots of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device according to the control The number of time slots of the channel determines the resource multiplexing mode.

Or, there is a mapping relationship between the number of timeslots and timeslot positions of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal The device determines the resource multiplexing mode according to the number of timeslots and timeslot positions of the control channel.

Alternatively, a mapping relationship exists between the RB position of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device according to the control channel The RB position determines the resource multiplexing mode.

Alternatively, a mapping relationship exists between the number of RBs of the control channel and the second indication information. When the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device determines the resource multiplexing mode according to the number of RBs of the control channel.

Alternatively, there is a mapping relationship between the number of RBs and RB positions of the control channel and the second indication information; when the second terminal device determines a resource multiplexing mode indicated by the first terminal device, the second terminal device determines The number of RBs and the RB position of the control channel determine the resource multiplexing mode.

After the first terminal device of the sender indicates the resource multiplexing mode to the second terminal device, the control signaling may further indicate at least one of the following information to the second terminal device to further indicate the resource location occupied by the data channel. :

When the second terminal device detects data sent by the first terminal device from the data channel according to the resource multiplexing mode, the second terminal device may determine the data according to the resource multiplexing mode and the control signaling. The at least one piece of information carried is used to detect data sent by the first terminal device from the data channel.

In addition, in order to further reduce the overhead of control signaling, a specific method may be used for a specific resource reuse mode to reduce the overhead.

Exemplarily, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are the same, the control signaling may carry the number of symbols of the data channel, the The number of time slots of the data channel, or at least one of a time domain interval between the data channel and the control channel.

Or, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are different, the control signaling may carry the number of RBs included in the data channel, and the control information The command also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or a time domain interval between the data channel and the control channel.

Or, if the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are the same, the control signaling may carry the number of RBs of the data channel and / or the RB A frequency domain interval between the data channel and the control channel.

Or, if the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are different, the control signaling may carry the number of symbols of the data channel or the data channel The number of time slots, the control signaling also carries the number of RBs included in the data channel and / or a frequency domain interval between the data channel and the control channel.

In the embodiment of the present application, the sender does not need to indicate the resources occupied by the data channel through the time-frequency resource pattern (requires 12-20 bits), but the sender instructs the receiver to multiplex the resources between the control channel and the data channel Mode (2-3 bits), the receiver can determine the multiplexing relationship between the data channel and the control channel according to the resource multiplexing mode, and the sender only needs to further occupy fewer bits to indicate the exact time-frequency position of the data channel This reduces signaling overhead.

Another feasible solution is that the network device instructs the resource reuse mode corresponding to the resource pool of the sender and the receiver in a frequency domain resource configuration manner, and the frequency domain resource may be a resource pool or a BWP or a carrier. Different frequency domain resources correspond to different resource reuse methods.

10 is a schematic flowchart of another communication method according to an embodiment of the present application. The solution described in FIG. 10 is that a network device instructs a resource reuse mode corresponding to a sender and a receiver resource pool in a frequency domain resource configuration manner, and the frequency domain resource may be a resource pool or a BWP or a carrier. Different frequency domain resources correspond to different resource reuse methods. To describe the solution, the terminal device of the sender is referred to as the first terminal device, and the terminal device of the receiver is referred to as the second terminal device in the embodiments of the present application. It should be noted that the terminal device of the receiver may be one or more, which is not specifically limited in the embodiment of the present application, and the terminal device of one receiver is taken as an example for description.

S1001: The network device determines at least one frequency domain resource, where the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier; wherein the at least one frequency domain resource is used by a first terminal device to send control signaling to a second terminal device And / or data, different resource multiplexing modes corresponding to different frequency domain resources are used, and the resource multiplexing mode is used to indicate a multiplexing relationship between a resource carrying the control signaling and a resource carrying the data.

S1002. The network device sends resource configuration information to the first terminal device.

Wherein, the resource configuration information includes information of at least one frequency domain resource configured for a terminal device including the first terminal device, and the first indication information is used to indicate resource restoration of the at least one frequency domain resource. In a manner, the frequency domain resource is a resource pool or a bandwidth part of a BWP or a carrier. Different frequency domain resources correspond to different resource multiplexing modes, and the resource multiplexing mode is used to indicate the resources carrying the control signaling and the data carrying the Reuse relationship between resources. The information of the at least one frequency domain resource may be position information of the at least one frequency domain resource, or at least one frequency domain resource quantity information, or at least one frequency domain resource location and quantity information.

S1003. The network device sends first instruction information to the first terminal device and the second terminal device.

Exemplarily, the first indication information may be included in the resource configuration information. The resource configuration information includes information of at least one frequency domain resource, and further includes first indication information.

Exemplarily, the first indication information may also be a single piece of information. That is, the first indication information is not included in the resource configuration information.

Exemplarily, when the frequency domain resource is BWP, the resource configuration information and the first indication information may both be included in the BWP configuration information and indicated to the first terminal device through a message. That is, when the first instruction information is used to indicate a resource reuse mode of the at least one BWP, the network device sends BWP configuration information to the first terminal, where the BWP configuration information includes the resource configuration information and the first An indication information, and then the first terminal device receives the BWP configuration information.

Exemplarily, when the frequency-domain resource is a carrier, the resource configuration information and the first indication information may both be included in the carrier configuration information and indicated to the first terminal device through a message. That is, when the first instruction information is used to indicate a resource multiplexing mode of the at least one carrier, the network device sends carrier configuration information to the first terminal, and the first terminal device receives the carrier configuration information sent by the network device. The carrier configuration information includes the resource configuration information and the first indication information.

S1004. After the first terminal device receives the resource configuration information and the first indication information sent by the network device, the first terminal device passes one of the at least one frequency domain resource according to the resource configuration information and the first indication information. The frequency domain resource sends control signaling and / or data to the second terminal device.

S1005. The second terminal device receives first indication information sent by the network device.

S1006. The second terminal device detects control signaling sent by the first terminal device.

S1007. The second terminal device determines a resource that carries the data according to the first instruction information and a resource that carries the control signaling.

S1008. The second terminal device detects the data from the determined resource that carries the data.

In a feasible example, when the network device indicates the first indication information to the first terminal device and the second terminal device when sending the BWP configuration information or the carrier configuration information to the first terminal device, the network device is When a terminal device is configured with a resource pool, different resource pools are configured for the first terminal device on different BWPs or carriers. The first terminal device obtains a resource multiplexing mode allowed in different resource pools by receiving BWP configuration information or carrier configuration information. The first terminal device of the sender sends control signaling and data in a corresponding resource multiplexing manner on the resource pool, so that the receiver receives the control signaling and data in a corresponding resource multiplexing manner.

When a network device configures a resource pool or a carrier or a BWP for a terminal device that is a sender, it can consider the service type of the service handled by the terminal device and the capabilities of the terminal device. Different service types have different delay requirements. For example, URLLC services have higher delay requirements. TDM can be used. The capabilities of the terminal device may include the processing delay of the terminal device and the cache capability of the terminal device. For a terminal device as a sender that does not have the buffering capability, a TDM method can be considered; for a terminal device with a strong processing delay capability, a FDM method can be considered.

The first terminal device may send first instruction information to the network device, where the second instruction information is used to indicate a service type of a service processed by the first terminal device or a capability of the first terminal device. Therefore, after receiving the second instruction information sent by the first terminal device, the network device configures a resource pool, a carrier, or a BWP for the first terminal device according to the second instruction information.

As an example, referring to FIG. 11, an example resource pool corresponding to mode one of the resource reuse mode and a resource pool corresponding to mode two of the resource reuse mode are illustrated.

In the above manner, since the resource reuse mode is bound to the resource pool / BWP / carrier, the terminal equipment of the sender and the terminal equipment of the receiver can know the resource reuse used on the corresponding resources directly from the configuration of the base station. the way. In this case, the terminal equipment of the sender does not need to instruct the terminal equipment of the resource reuse mode when sending control signaling, which further reduces the signaling overhead.

The communication device according to the embodiment of the present application will be described in detail below with reference to FIGS. 12 to 14.

FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application. This terminal device may be applicable to the system shown in FIG. 1A, and performs the functions of the terminal device (including the terminal device on the sender side and the terminal device on the receiver side) in the foregoing method embodiment. For convenience of explanation, FIG. 12 shows only the main components of the terminal device. As shown in FIG. 12, the terminal device 120 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly used to process the communication protocol and communication data, and control the entire terminal device, execute a software program, and process the data of the software program, for example, to support the first terminal device or the second terminal device to execute the foregoing method embodiment Actions described in, such as sending control signaling or data. The memory is mainly used to store software programs and data, for example, to store the correspondence between the instruction information and the combination information described in the foregoing embodiments. The control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. After the radio frequency circuit processes the baseband signal, the radio frequency signal is sent out in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

Those skilled in the art can understand that, for ease of description, FIG. 12 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, which is not limited in the embodiments of the present application.

As an optional implementation manner, the processor may include a baseband processor and / or a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device. , Execute the software program, process the data of the software program. The processor in FIG. 12 may integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as a bus. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built in the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

In the embodiment of the present application, the antenna and the control circuit having the transmitting and receiving function may be regarded as the transmitting and receiving unit 1201 of the terminal device 120, for example, for supporting the terminal device to perform the receiving function and transmission as described in the part of FIG. Features. A processor having a processing function is regarded as a processing unit 1202 of the terminal device 120. As shown in FIG. 12, the terminal device 120 includes a transceiver unit 1201 and a processing unit 1202. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like. Optionally, the device for implementing the receiving function in the transceiver unit 1201 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 1201 may be regarded as a transmitting unit, that is, the transceiver unit 1201 includes a receiving unit and a transmitting unit. The receiving unit may also be called a receiver, an input port, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit.

The processor 1202 may be configured to execute instructions stored in the memory, to control the transceiver unit 1201 to receive signals and / or send signals to complete functions of the terminal device in the foregoing method embodiment. As an implementation manner, the function of the transceiver unit 1201 may be considered to be implemented by a transceiver circuit or a dedicated chip for transceiver.

FIG. 13 is a schematic structural diagram of a network device according to an embodiment of the present application. For example, it may be a structural schematic diagram of a base station. As shown in FIG. 13, the base station can be applied to the system shown in FIG. 1A to perform the functions of the network device in the foregoing method embodiment. The base station 130 may include one or more radio frequency units, such as a remote radio unit (RRU) 1301 and one or more baseband units (BBU) (also referred to as a digital unit, DU). 1302. The RRU 1301 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 13011 and a radio frequency unit 13012. The RRU 1301 part is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending resource configuration information described in the foregoing embodiment to a terminal device. The 1302 part of the BBU is mainly used for baseband processing and controlling base stations. The RRU 1301 and the BBU 1302 may be physically located together, or may be physically separated, that is, a distributed base station.

The BBU 1302 is a control center of a base station, and may also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU (Processing Unit) 1302 may be used to control a base station to execute an operation process on a network device in the foregoing method embodiment.

In one example, the BBU 1302 may be composed of one or more boards, and multiple boards may jointly support a single access indication wireless access network (such as an LTE network or a 5G network), or may separately support different Access standard wireless access network (such as LTE network, 5G network or other networks). The BBU 1302 further includes a memory 13021 and a processor 13022. The memory 13021 is configured to store necessary instructions and data. For example, the memory 13021 stores the correspondence between the frequency domain resources and the resource multiplexing manner in the foregoing embodiment. The processor 13022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 13021 and the processor 13022 may serve one or more single boards. That is, the memory and processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.

FIG. 14 is a schematic structural diagram of a communication device 1400. The device 1400 may be configured to implement the method described in the foregoing method embodiment, and reference may be made to the description in the foregoing method embodiment. The communication device 1400 may be a chip, a network device (such as a base station), a terminal device, or other network devices.

The communication device 1400 includes one or more processors 1401. The processor 1401 may be a general-purpose processor or a special-purpose processor. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, terminals, or chips, etc.), execute software programs, and process software program data. The communication device may include a transceiving unit for implementing input (reception) and output (transmission) of signals. For example, the communication device may be a chip, and the transceiver unit may be an input and / or output circuit of the chip, or a communication interface. The chip may be used in a terminal or a base station or other network equipment. For another example, the communication device may be a terminal or a base station or other network equipment, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communication device 1400 includes one or more of the processors 1401, and the one or more processors 1401 may implement a method of a network device or a terminal device in the embodiment shown in FIG. 8 or FIG. 10.

In a possible design, the communication device 1400 includes means for generating control signaling, and means for sending control signaling. The functions of generating the means and sending the control signaling can be implemented by one or more processors. For example, the control signaling may be generated by one or more processors and sent through a transceiver, or an input / output circuit, or an interface of a chip. For the control signaling, refer to related descriptions in the foregoing method embodiments.

In a possible design, the communication device 1400 includes means for receiving control signaling, and means for receiving data according to the control signaling. For the control signaling and how to receive data according to the control signaling, refer to related descriptions in the foregoing method embodiments. For example, the control signaling may be received through a transceiver, or an input / output circuit, or an interface of a chip, and data is received according to the control signaling through one or more processors.

Optionally, the processor 1401 may implement other functions in addition to implementing the method in the embodiment shown in FIG. 8 or FIG. 10.

Optionally, in a design, the processor 1401 may execute instructions, so that the communication device 1400 executes the method described in the foregoing method embodiment. The instructions may be stored in whole or in part in the processor, such as instruction 1403, or may be stored in whole or in part in a memory 1402 coupled to the processor, such as instruction 1404. The communication device 1400 executes the method described in the above method embodiment.

In yet another possible design, the communication device 1400 may also include a circuit, and the circuit may implement the functions of the network device or the terminal device in the foregoing method embodiment.

In yet another possible design, the communication device 1400 may include one or more memories 1402 on which instructions 1404 are stored, and the instructions may be executed on the processor, so that the communication device 1400 executes The method described in the above method embodiment. Optionally, the memory may further store data. Instructions and / or data can also be stored in the optional processor. For example, the one or more memories 1402 may store the correspondence relationship described in the foregoing embodiments, or related parameters or tables involved in the foregoing embodiments. The processor and the memory may be set separately or integrated together.

In another possible design, the communication device 1400 may further include a transceiver unit 1405 and an antenna 1406. The processor 1401 may be referred to as a processing unit and controls a communication device (a terminal or a base station). The transceiver unit 1405 may be referred to as a transceiver, a transceiver circuit, or a transceiver, and is used to implement the transceiver function of the communication device through the antenna 1406.

The present application also provides a communication system, which includes one or more of the aforementioned network devices, and a plurality of terminal devices.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (Field, Programmable Gate Array, FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) And direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

An embodiment of the present application further provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a computer, the communication method according to any one of the foregoing method embodiments is implemented.

The embodiment of the present application further provides a computer program product, and when the computer program product is executed by a computer, the communication method according to any one of the method embodiments is implemented.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) and so on.

An embodiment of the present application further provides a processing device including a processor and an interface; the processor is configured to execute the communication method according to any one of the method embodiments.

It should be understood that the processing device may be a chip, and the processor may be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc .; when implemented by software At this time, the processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory, and the memory may be integrated in the processor, may be located outside the processor, and exist independently.

It should be understood that “an embodiment” or “an embodiment” mentioned throughout the specification means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Thus, the appearances of "in one embodiment" or "in an embodiment" appearing throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of the present application. The implementation process constitutes any limitation.

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this document is only a kind of association relationship describing related objects, which means that there can be three kinds of relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and exists alone B these three cases. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that in the embodiment of the present application, “B corresponding to A” means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B based on A does not mean determining B based on A alone, but also determining B based on A and / or other information.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the hardware and software, Interchangeability. In the above description, the composition and steps of each example have been described generally in terms of functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units 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 integrated. To another system, or some features can be ignored and not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

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, which may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions in the embodiments of the present application.

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

Through the description of the foregoing embodiments, those skilled in the art can clearly understand that the present application can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limited to: computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures Expected program code and any other medium that can be accessed by a computer. Also. Any connection is properly a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared, radio, and microwave, then coaxial cable , Fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the media. As used in this application, disks and discs include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy discs and Blu-ray discs, where discs are usually magnetically copied data, and Lasers are used to duplicate the data optically. The above combination should also be included in the protection scope of the computer-readable medium.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims

A communication method, comprising:

The first terminal device determines a resource multiplexing mode, where the resource multiplexing mode represents a resource multiplexing relationship between a control channel and a data channel, and the control channel is used by the first terminal device to send control signaling to a second terminal device, A data channel is used by the first terminal device to send data to the second terminal device;

The first terminal device indicates the resource multiplexing mode to the second terminal device through the first control signaling.
The method according to claim 1, wherein the first terminal device indicating the resource multiplexing mode to the second terminal device through the first control signaling comprises:

Sending, by the first terminal device, the first control signaling to the second terminal device through the control channel, where the control signaling carries first indication information;

The first indication information is used to indicate a resource multiplexing mode.
The method according to claim 1, wherein the first terminal device indicating the resource multiplexing mode to the second terminal device through the first control signaling comprises:

Sending, by the first terminal device, the first control signaling to a second terminal device through the control channel;

There is a mapping relationship between the related information of the first control signaling and the second indication information. The second indication information is used to indicate a resource multiplexing mode. The related information of the first control signaling includes at least the following: One item:

Demodulating a cyclic offset of a demodulation reference signal DMRS sequence of the control channel carrying the first control signaling;

The orthogonal convolutional code OCC of the DMRS sequence;

The root sequence of the DMRS sequence;

A scrambling code of the first control signaling;

A cyclic redundancy check CRC mask of the first control signaling;

A control channel unit CCE index number of the control channel;

A control resource set identifier of the control channel;

A search space identifier of the control channel;

A symbol position of the control channel;

The number of symbols of the control channel;

A time slot position of the control channel;

The number of time slots of the control channel;

The RB position of the control channel; or,

The number of RBs of the control channel.
The method according to any one of claims 1-3, characterized in that:

The resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
The method according to any one of claims 2-4, wherein:

The first control signaling carries at least one of the following information:

The number of symbols of the data channel, the number of time slots of the data channel, the time domain interval between the data channel and the control channel, the RB number of the data channel, or the frequency domain interval between the data channel and the control channel.
The method according to claim 5, characterized in that:

If the resource multiplexing mode is time division multiplexing, the first control signaling carries the number of symbols of the data channel, the number of time slots of the data channel, or the time between the data channel and the control channel. A domain interval, at least one of the number of RBs of the data channel; or

If the resource multiplexing mode is frequency division multiplexing, the first control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the first control signaling also carries the data. At least one of the number of RBs of the channel, and a frequency domain interval between the data channel and the control channel.
The method according to claim 5 or 6, characterized in that:

If the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are the same, the first control signaling carries the number of symbols of the data channel and the time of the data channel. The number of slots, or at least one of a time domain interval between the data channel and the control channel; or

If the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are different, the first control signaling carries the number of RBs included in the data channel, and the first control signal The command also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or a time domain interval between the data channel and the control channel; or,

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are the same, the first control signaling carries the number of RBs of the data channel, the data channel and the data channel. At least one of the frequency domain intervals of the control channel; or

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are different, the first control signaling carries the number of symbols of the data channel or the time of the data channel. The number of slots, the first control signaling also carries at least one of the number of RBs included in the data channel, and a frequency domain interval between the data channel and the control channel.
The method according to any one of claims 1-7, wherein:

The control channel and the data channel are located in the same resource pool.
A communication method, comprising:

The second terminal device receives the first control signaling sent by the first terminal device from the control channel;

Determining, by the second terminal device, a resource multiplexing mode according to the first control signaling, where the resource multiplexing mode represents a resource multiplexing relationship between the control channel and the data channel, and the control channel is used for the first terminal device Sending control signaling to a second terminal device, where the data channel is used by the first terminal device to send data to the second terminal device;

Detecting, by the second terminal device, data sent by the first terminal device from the data channel according to the resource multiplexing mode.
The method according to claim 9, wherein the first control signaling carries first indication information, and the determining, by the second terminal device, a resource reuse mode according to the first control signaling comprises:

Obtaining, by the second terminal device, the first indication information from the first control signaling;

The first indication information is used to indicate a resource multiplexing mode.
The method according to claim 9, wherein the determining, by the second terminal device, a resource multiplexing mode according to the first control signaling comprises:

Determining, by the second terminal device, the resource multiplexing mode according to a mapping relationship between the related information of the first control signaling and the second indication information, and the second indication information is used to indicate the resource multiplexing mode:

The related information of the first control signaling includes at least one of the following:

Demodulating a cyclic offset of a demodulation reference signal DMRS sequence of the control channel carrying the first control signaling;

The orthogonal convolutional code OCC of the DMRS sequence;

The root sequence of the DMRS sequence;

A scrambling code of the first control signaling;

A cyclic redundancy check CRC mask of the first control signaling;

A control channel unit CCE index number of the control channel;

A control resource set identifier of the control channel;

A search space identifier of the control channel;

A symbol position of the control channel;

The number of symbols of the control channel;

A time slot position of the control channel;

The number of time slots of the control channel;

The RB position of the control channel; or,

The number of RBs of the control channel.
The method according to any one of claims 9-11, wherein:

The resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
The method according to any one of claims 10-12, wherein the first control signaling carries at least one of the following parameters:

The number of symbols of the data channel, the number of time slots of the data channel, the time domain interval between the data channel and the control channel, the RB number of the data channel, or the frequency domain interval between the data channel and the control channel.
The method according to claim 13, wherein the detecting, by the second terminal device from the data channel according to the resource multiplexing mode, data sent by the first terminal device comprises:

Detecting, by the second terminal device, data sent by the first terminal device from the data channel according to the resource multiplexing mode and a parameter carried by the first control signaling.
The method according to claim 13 or 14, wherein:

If the resource multiplexing mode is time division multiplexing, the first control signaling carries the number of symbols of the data channel, the number of time slots of the data channel, or the time between the data channel and the control channel. A domain interval, at least one of the number of RBs of the data channel; or

If the resource multiplexing mode is frequency division multiplexing, the first control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the first control signaling also carries the data. At least one of the number of RBs of the channel, and a frequency domain interval between the data channel and the control channel.
The method according to any one of claims 13-15, wherein:

If the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are the same, the first control signaling carries the number of symbols of the data channel and the time of the data channel. The number of slots, or at least one of a time domain interval between the data channel and the control channel; or

If the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel and the data channel are different, the first control signaling carries the number of RBs included in the data channel, and the control signaling also Carry at least one of the number of symbols of the data channel, the number of time slots of the data channel, or a time domain interval between the data channel and the control channel; or,

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are the same, the first control signaling carries the number of RBs of the data channel and / or the data channel A frequency domain interval from the control channel; or

If the resource multiplexing mode is frequency division multiplexing and the time domain length of the control channel and the data channel are different, the first control signaling carries the number of symbols of the data channel or the time of the data channel. The number of slots, the first control signaling also carries the number of RBs included in the data channel and / or a frequency domain interval between the data channel and the control channel.
The method according to any one of claims 9-16, wherein:

The control channel and the data channel are located in the same resource pool.
A communication method, comprising:

The network device determines at least one frequency domain resource; wherein the at least one frequency domain resource is used by the first terminal device to send control signaling and / or data to the second terminal device, and different frequency domain resources have different resource reuse modes. The resource multiplexing mode is used to indicate a multiplexing relationship between a resource carrying the control signaling and a resource carrying the data;

Sending, by the network device, resource configuration information to the first terminal device, and sending first indication information to the first terminal device and the second terminal device, the resource configuration information including the at least one frequency domain resource The first indication information is used to indicate a resource multiplexing manner of the at least one frequency domain resource.
The method according to claim 18, wherein before the network device determines at least one frequency domain resource, the method further comprises:

Receiving, by the network device, second instruction information sent by the first terminal device, where the second instruction information is used to indicate a service type of a service processed by the first terminal device or a capability of the first terminal device;

The determining, by the network device, at least one frequency domain resource includes:

Determining, by the network device, the at least one frequency domain resource according to the second indication information.
The method according to claim 18 or 19, wherein the capability of the first terminal device comprises a processing delay of the first terminal device and / or a buffering capability of the first terminal device.
The method according to any one of claims 18-20, wherein the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
The method according to claim 21, wherein the sending, by the network device, resource configuration information to the first terminal device and sending the first instruction information to the first terminal device comprises:

When the first indication information is used to indicate a resource reuse mode of at least one BWP, the network device sends BWP configuration information to the first terminal device, where the BWP configuration information includes the resource configuration information and all resources. Mentioned first indication information; or

When the first indication information is used to indicate a resource multiplexing manner of the at least one carrier, the network device sends carrier configuration information to the first terminal device, where the carrier configuration information includes the resource configuration information And the first indication information.
The method according to any one of claims 18 to 22, wherein:

The resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
A communication method, comprising:

The first terminal device receives the resource configuration information sent by the network device, and receives the first instruction information sent by the network device;

Wherein, the resource configuration information includes information of at least one frequency domain resource configured for a terminal device including the first terminal device, and the first indication information is used to indicate resource restoration of the at least one frequency domain resource. In a manner, a resource multiplexing manner corresponding to different frequency domain resources is different, and the resource multiplexing manner is used to indicate a multiplexing relationship between a resource carrying control signaling and a resource carrying data;

Sending, by the first terminal device, control signaling and / or the second terminal device through one frequency domain resource of the at least one frequency domain resource according to the information of the at least one frequency domain resource and the first indication information. data.
The method according to claim 24, wherein the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
The method according to claim 25, wherein the receiving, by the first terminal device, the first indication information sent by the network device comprises:

When the first indication information is used to indicate a resource reuse mode of the at least one BWP, the first terminal device receives BWP configuration information sent by the network device, and the BWP configuration information includes the resource configuration Information and the first indication information; or,

When the first indication information is used to indicate a resource multiplexing manner of the at least one carrier, the first terminal device receives carrier configuration information sent by the network device, and the carrier configuration information includes the resource configuration The information and the first indication information.
The method according to any one of claims 24-26, before the receiving, by the first terminal device, the resource configuration information sent by the network device, further comprising:

The first terminal device sends second instruction information to the network device, where the second instruction information is used to indicate a service type of a service processed by the first terminal device or a capability of the first terminal device.
The method according to claim 27, wherein the capability of the first terminal device comprises a processing delay of the first terminal device and / or a buffering capability of the first terminal device.
An apparatus is characterized in that it comprises a processor and a memory, wherein:

The memory is used to store program instructions;

The processor is configured to call and execute program instructions stored in the memory to implement the method according to any one of claims 1 to 8, 9 to 17, 24 to 28.
An apparatus is characterized in that it comprises a processor and a memory, wherein:

The memory is used to store program instructions;

The processor is configured to call and execute a program instruction stored in the memory to implement the method according to any one of claims 18 to 23.