WO2021031090A1

WO2021031090A1 - Sidelink communication method and device

Info

Publication number: WO2021031090A1
Application number: PCT/CN2019/101453
Authority: WO
Inventors: 王婷; 唐浩
Original assignee: 华为技术有限公司
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2021-02-25
Also published as: CN114128197A; CN114128197B

Abstract

Provided are a sidelink communication method and a device, which are suitable for V2X, Internet of Vehicles, intelligent networked vehicles, assistant driving, intelligent driving and other fields, the method includes: a first terminal apparatus generates and sends a first DMRS, the first DMRS is used to demodulate the first sidelink information in the first time domain resource; the first terminal apparatus generates and sends a second DMRS, the second DMRS is used to demodulate the second sidelink information in the second time domain resource. Since the first terminal apparatus can send the first DMRS used to demodulate the first sidelink information in the first time domain resource, and the second DMRS used to demodulate the second sidelink information in the second time domain resource in the same time unit, therefore, the sidelink information in the two time domain resources that do not overlap in the time domain can be received and demodulated using different DMRS, which can improve the transmission performance on the sidelink.

Description

Side link communication method and device

Technical field

This application relates to the field of wireless communication technology, and in particular to a side link communication method and device.

Background technique

A terminal device can communicate with another terminal device through a sidelink (SL), and a terminal device can also communicate with a network device through an uplink (uplink, UL). At present, the transmission of the side link may require that the total transmission power of the control information and/or data information of the side link be kept constant on the symbols of the side link information transmission in a time slot. If this condition is met, then in a scenario where side-link transmission and uplink transmission coexist, and the side-link information and uplink information use the same transmission channel, the side-link information and uplink information occupy When the symbols of are partially overlapped in a time slot, it will cause the total transmission power of the terminal equipment in the time slot to jump. The power jump will make the receiver channel estimation inaccurate and affect the transmission performance of side link information. .

Summary of the invention

The embodiments of the present application provide a side-link communication method and device for improving transmission performance on the side-link.

In the first aspect, the embodiments of the present application provide a communication method, which can be executed by a terminal device or a device (such as a processor and/or a chip) in the terminal device. The method includes: a first terminal device generates First demodulation reference signal DMRS, and send the first DMRS, the first DMRS is used to demodulate the first side uplink information in the first time domain resource; the first terminal device generates the second DMRS, and sends the The second DMRS, the second DMRS is used to demodulate the second side link information in the second time domain resource; where the first DMRS and the second DMRS are located in the same time unit, and the first time domain resource and the second Time domain resources do not overlap in time.

Using the technical solution provided by the present application, the first terminal device can transmit the first DMRS used to demodulate the first side link information in the first time domain resource and the second time domain in the same time unit. The second DMRS of the second side link information in the domain resources, so that the side link information in the two time domain resources that do not overlap in the time domain can be received and demodulated using different DMRS, thereby improving the side link information. Transmission performance on the uplink.

With reference to the first aspect, in a possible design of the first aspect, the first time domain resource is also used to carry uplink information. That is, the first time domain resource may carry the first side link information and the uplink information, and the second time domain resource may carry the second side link information. In this way, in a scenario where side link information and uplink information coexist, the side link information on the time domain resources where the side link information and the uplink information are multiplexed, and the side link information not in the uplink information The side link information on the multiplexed time domain resources can be received and demodulated using different DMRS, which can effectively avoid the parallel transmission of uplink information and side link information, which may cause the first terminal equipment When the total transmission power of the side link information changes, the channel estimation is not accurate and the reception is incorrect when the channel transmission of the side link information changes.

With reference to the first aspect, in a possible design of the first aspect, the first side uplink information includes side uplink control information and first side uplink data information, and the second side uplink information includes the first side uplink information. Two-side uplink data information; the first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information. In this way, the side link data information on the first time domain resource where the side link control information and the side link data information are multiplexed, and the second time domain that is not multiplexed with the side link control information The side link data information on the resource can also be received and demodulated using different DMRS, which can avoid the power amplification of the side link control channel, which leads to the upper side of the first time domain resource and the second time domain resource The transmission power of the uplink data information is different, which in turn affects the problem of correct reception of the side uplink data information.

With reference to the first aspect, in a possible design of the first aspect, the side link control information is used to schedule the transmission of the first side link data information and the transmission of the second side link data information. In this way, the side link data information scheduled by the same side link control information and located on non-overlapping time domain resources can be received and demodulated using different DMRS. It can also be understood that the side-link data information on different time-domain resources in the same time unit can be received and demodulated using different DMRSs. In this way, the reliability of the transmission of the side-link data information can be improved. Avoid the power amplification of the side-link control information due to the parallel transmission of the uplink information or the frequency division multiplexing of the side-link control information and the side-link data information, which affects the correctness of the side-link data information Receiving problems.

With reference to the first aspect, in a possible design of the first aspect, the first terminal device may further send first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource .

With reference to the first aspect, in a possible design of the first aspect, the first terminal device may further send second indication information, which is used to indicate the location of the first DMRS and/or the location of the second DMRS .

In the second aspect, the embodiments of the present application provide a communication method, which can be executed by a terminal device or a device (such as a processor and/or a chip) in the terminal device. The method includes: a second terminal device receives The first demodulation reference signal DMRS, the first DMRS is used to demodulate the first side uplink information in the first time domain resource; the second terminal device receives the second DMRS, the second DMRS is used to demodulate the second The second side link information in the time domain resource; where the first DMRS and the second DMRS are located in the same time unit, and the first time domain resource and the second time domain resource do not overlap in time.

Using the technical solution provided by this application, the second terminal device can receive the first DMRS and the second DMRS sent by the first terminal device in the same time unit, and demodulate the first side of the first time domain resource according to the first DMRS Uplink information, demodulate the second sidelink information in the second time domain resource according to the second DMRS, so that the sidelink information in the two time domain resources that do not overlap in the time domain can be different DMRS receive demodulation, thereby improving the transmission performance on the side link.

With reference to the second aspect, in a possible design of the second aspect, the first time domain resource is also used to carry uplink information. That is, the first time domain resource may carry the first side link information and the uplink information, and the second time domain resource may carry the second side link information. In this way, in a scenario where side link information and uplink information coexist, the side link information on the time domain resources where the side link information and the uplink information are multiplexed, and the side link information not in the uplink information The side link information on the multiplexed time domain resources can be received and demodulated using different DMRS, which can effectively avoid the parallel transmission of uplink information and side link information, which may cause the first terminal equipment When the total transmission power of the side link information changes, the channel estimation is not accurate and the reception is incorrect when the channel transmission of the side link information changes.

With reference to the second aspect, in a possible design of the second aspect, the first side uplink information includes side uplink control information and first side uplink data information, and the second side uplink information includes the first side uplink information. Two-side uplink data information; the first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information. In this way, the side link data information on the first time domain resource where the side link control information and the side link data information are multiplexed, and the second time domain that is not multiplexed with the side link control information The side link data information on the resource can also be received and demodulated using different DMRS, which can avoid the power amplification of the side link control channel, which leads to the upper side of the first time domain resource and the second time domain resource The transmission power of the uplink data information is different, which in turn affects the problem of correct reception of the side uplink data information.

With reference to the second aspect, in a possible design of the second aspect, the side link control information is used to schedule the transmission of the first side link data information and the transmission of the second side link data information. In this way, the side link data information scheduled by the same side link control information and located on non-overlapping time domain resources can be received and demodulated using different DMRS. It can also be understood that the side-link data information on different time-domain resources in the same time unit can be received and demodulated using different DMRSs. In this way, the reliability of the transmission of the side-link data information can be improved. Avoid the power amplification of the side-link control information due to the parallel transmission of the uplink information or the frequency division multiplexing of the side-link control information and the side-link data information, which affects the correctness of the side-link data information Receiving problems.

With reference to the second aspect, in a possible design of the second aspect, the second terminal device may also receive first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource .

With reference to the second aspect, in a possible design of the second aspect, the second terminal device may also receive second indication information, which is used to indicate the location of the first DMRS and/or the location of the second DMRS .

In a third aspect, an embodiment of the present application provides a communication device that has the function of a first terminal device in any possible design of the first aspect or the first aspect, or has the function of the second aspect or the first aspect. The function of the second terminal device in any possible design of the two aspects. The device may be a terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user equipment, a roadside unit, etc., a device included in the terminal device, such as a chip, or a device including a terminal device. The functions of the above-mentioned terminal device may be realized by hardware, or may be realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a possible design, the structure of the device includes a processing module and a transceiver module, wherein the processing module is configured to support the device to execute the first aspect or the first terminal device in any of the first aspects of the design. , Or perform the corresponding function of the second terminal device in the second aspect or any of the designs of the second aspect. The transceiver module is used to support communication between the device and other communication devices. For example, when the device is a first terminal device, it can send a first DMRS to a second terminal device. The communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the device. As an example, the processing module may be a processor, the communication module may be a transceiver, and the storage module may be a memory. The memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.

In another possible design, the structure of the device includes a processor and may also include a memory. The processor is coupled with the memory, and can be used to execute computer program instructions stored in the memory, so that the device executes the above-mentioned first aspect or any one of the possible design methods of the first aspect, or executes the above-mentioned second aspect or the second aspect. Any one of the possible design methods. Optionally, the device further includes a communication interface, and the processor is coupled with the communication interface. When the device is a terminal device, the communication interface may be a transceiver or an input/output interface; when the device is a chip included in the terminal device, the communication interface may be an input/output interface of the chip. Optionally, the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.

In a fourth aspect, an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip system implements the method in any possible design of the first aspect or the first aspect, or implements the method in any possible design of the second aspect or the second aspect.

Optionally, there may be one or more processors in the chip system. The processor can be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.

Optionally, there may be one or more memories in the chip system. The memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips. The setting method of the processor is not specifically limited.

In a fifth aspect, an embodiment of the present application provides a storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed, the computer can execute any of the above-mentioned first aspect or any one of the first aspects. The method in the design, or the method in the design that implements the second aspect or any of the second aspects described above.

In a sixth aspect, the embodiments of the present application provide a computer program product. When the computer reads and executes the computer program product, the computer executes the method in the first aspect or any one of the possible designs in the first aspect, Or implement the above-mentioned second aspect or any one of the possible design methods of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned first terminal device and/or second terminal device. Optionally, the communication system may also include network equipment.

Description of the drawings

FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;

2 is a schematic flowchart of a side link communication method provided by an embodiment of this application;

Figure 3 is a schematic diagram of a time unit provided by an embodiment of the application;

4 is a schematic diagram of parallel transmission of uplink information and side link information in scenario 1 provided by an embodiment of the application;

FIG. 5 is a schematic diagram of a first time domain resource and a second time domain resource in scenario one provided by an embodiment of this application;

FIG. 6 is a schematic diagram of a multiplexing manner of side-link control information and side-link data information in scenario 1 provided by an embodiment of the application;

7a to 7c are schematic diagrams of uplink information, side-link control information, and side-link data information in scenario one provided by an embodiment of the application;

8a to 8c are schematic diagrams of several possible first DMRS and second DMRS in scenario 1 provided by an embodiment of this application;

9 is a schematic diagram of a start symbol or an end symbol that allows parallel transmission of uplink information and side link information in a time unit provided by an embodiment of the application;

FIG. 10 is a schematic diagram of the position of the first DMRS and/or the position of the second DMRS predefined in a time unit according to an embodiment of the application;

FIG. 11 is a schematic diagram of determining the location of the first DMRS and/or the location of the second DMRS according to the first time domain resource and the second time domain resource according to an embodiment of this application;

12a and 12b are schematic diagrams of providing multiple DMRS locations and patterns of time domain resources in an embodiment of this application;

13 is a schematic diagram of sending side uplink information in scenario 2 provided by an embodiment of the application;

FIG. 14 is a schematic diagram of the first time domain resource and the second time domain resource in scenario 2 provided by an embodiment of this application;

15a and 15b are schematic diagrams of the first DMRS and the second DMRS in the second scenario provided by an embodiment of the application;

16 is a schematic flowchart of another side link communication method provided by an embodiment of the application;

FIG. 17 is a schematic diagram of a third DMRS provided by an embodiment of this application;

FIG. 18 is a schematic flowchart of yet another side link communication method provided by an embodiment of this application;

FIG. 19 is a schematic diagram of a fourth DMRS provided by an embodiment of this application;

FIG. 20 is a schematic structural diagram of a device provided by an embodiment of this application;

FIG. 21 is a schematic structural diagram of a terminal device provided by an embodiment of this application;

FIG. 22 is a schematic structural diagram of another communication device provided by an embodiment of this application.

detailed description

The embodiments of the present application will be described in detail below in conjunction with the drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex) , TDD), the 5th generation (5G) system, the new radio (NR) system, or the communication system used in the future evolution or other similar communication systems.

The technical solutions of the embodiments of this application can be applied to unmanned driving (unmanned driving), driver assistance (ADAS), intelligent driving (intelligent driving), connected driving (connected driving), and intelligent network driving (intelligent network driving). ), car sharing (car sharing), smart/intelligent car, digital car, unmanned car/driverless car/pilotless car/automobile, internet of vehicles (IoV) , Autonomous vehicles (self-driving car, autonomous car), cooperative vehicle infrastructure (CVIS), intelligent transportation (intelligent transport system, ITS), vehicle communication (vehicular communication), drone communication, air communication, satellite Technical fields such as communications.

In addition, the technical solutions provided by the embodiments of the present application can be applied to cellular links, and can also be applied to links between devices, such as device-to-device (D2D) links. D2D links or vehicle-to-everything (V2X) links may also be called side links, auxiliary links, side links, side links, or side links. In the embodiments of the present application, the aforementioned terms may all refer to links between devices of the same type. The so-called link between devices of the same type can be a link between a terminal device and a terminal device, a link between a base station and a base station, or a link between a relay node and a relay node. Road, etc., this embodiment of the application does not limit this. The link between the terminal device and the terminal device can be a D2D link, or a V2X link from a car to a car, a car to a mobile phone, or a car to any entity.

Please refer to FIG. 1, which is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable. The communication system includes a terminal device 110 and a terminal device 120. The terminal equipment and the terminal equipment can communicate through the PC5 interface, and the direct communication link between the terminal equipment and the terminal equipment is the side link. Sidelink-based communication can use at least one of the following channels: physical sidelink shared channel (PSSCH), used to carry sidelink data information; physical sidelink control channel ( Physical sidelink control channel, PSCCH), used to carry sidelink control information (SCI).

The communication system also includes a network device 130, and the network device 130 can communicate with at least one terminal device (such as the terminal device 110) through a Uu interface. The communication link between the network equipment and the terminal equipment includes an uplink (UL) and a downlink (DL).

The network device in Figure 1 may be an access network device, such as a base station. Wherein, the access network equipment corresponds to different equipment in different systems, for example, in a 5G system, it corresponds to the access network equipment in 5G, such as gNB. Although only the terminal device 110 and the terminal device 120 are shown in FIG. 1, it should be understood that the network device can provide services for more terminal devices, and the embodiment of the present application does not limit the number of network devices and terminal devices in the communication system. . The terminal device in FIG. 1 is described by taking a vehicle-mounted terminal device or a vehicle as an example. It should also be understood that the terminal device in the embodiment of the present application is not limited to this, and the terminal device may also be a vehicle-mounted module, a roadside unit or a pedestrian handheld device . It should be understood that the embodiments of the present application are not limited to 4G or 5G systems, and are also applicable to subsequent evolved communication systems.

Hereinafter, some terms in the embodiments of the present application will be explained.

1) Terminal equipment, which may also be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. For example, the terminal device may be a handheld device with a wireless connection function, a vehicle-mounted device, a vehicle user device, and so on. At present, some examples of terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) Wireless terminals in transportation safety (transportation safety), wireless terminals in smart city, smart homes, drones, aerial communications, wireless terminals in satellite communications, etc. The terminal device in the embodiments of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit that is built into a vehicle as one or more components or units. Modules, on-board components, on-board chips or on-board units can implement the method of the present application.

2) Network equipment, which can be a node in a radio access network, can also be referred to as a base station, or can also be referred to as a radio access network (RAN) node (or device). For example, the network equipment may include an evolved base station (eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-advanced, LTE-A), such as traditional The macro base station eNB and the micro base station eNB in the heterogeneous network scenario may also include the next generation node B (next generation) in the fifth generation mobile communication technology (5G) system or the new radio (NR) system. node B, gNB), or may also include a transmission reception point (TRP), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), baseband pool BBU pool, or wireless fidelity (wireless fidelity, WiFi) access point (AP), etc., or may also include a centralized unit (CU) and/or a distributed unit (DU) The embodiments of this application are not limited. For another example, the network device may be a roadside unit (RSU) in V2X, and the RSU may be a device that supports V2X applications, and can exchange messages with other devices that support V2X applications.

3) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. In view of this, "multiple" may also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

Unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or importance of multiple objects. And the description of "first" and "second" does not limit the objects to be different.

Please refer to FIG. 2, which is a schematic flowchart of a communication method provided by an embodiment of this application. The method includes the following steps S201 to S204:

Step S201: The first terminal device generates a first demodulation reference signal (demodulation reference signal, DMRS), and sends the first DMRS, where the first DMRS is used to demodulate the first side link in the first time domain resource information. Step S202: The first terminal device generates a second DMRS, and sends the second DMRS, where the second DMRS is used to demodulate the second side uplink information in the second time domain resource.

Step S203: The second terminal device receives the first DMRS.

Step S204: The second terminal device receives the second DMRS.

It should be noted that the present application does not specifically limit the execution sequence of the above steps S201 to S204, and the sequence of execution of each step is defined according to its inherent logic. For example, the first terminal device generates the first DMRS before sending the first DMRS, and the first terminal device generates the second DMRS before sending the second DMRS, but the first terminal device generates the first DMRS and the second DMRS, And when the first DMRS and the second DMRS are sent, there is no certain sequence relationship, and they can be generated at the same time or at different times, and can also be sent at the same time or at different times. The second terminal device may receive the first DMRS after the first terminal device generates and/or transmits the second DMRS, or the second terminal device may receive the first DMRS before the first terminal device generates and/or transmits the second DMRS.

In the embodiment of the present application, the first DMRS and the second DMRS may be located in the same time unit. The time unit may be one of time domain units with multiple time granularity, such as a radio frame, a subframe, a time slot, a mini-slot, a mini-slot, or a symbol. The time unit may be understood as a scheduling unit in the time domain, and may also be called a time domain unit or a scheduling unit or have other names, which is not limited in this application. Specifically, a radio frame may include one or more subframes. For example, if the duration of a radio frame is 10 milliseconds and the duration of a subframe is 1 millisecond, then a radio frame may include 10 subframes. One subframe may include one or more slots, or include one or more mini-slots. A time slot may include one or more symbols. For example, in a normal cyclic prefix (CP), a time slot may include 14 symbols, and in an extended CP, a time slot may include 12 symbols. For different sub-carrier intervals, there can be different time slot lengths. For example, when the sub-carrier interval is 15 kHz, the duration of a time slot can be 1 millisecond, and when the sub-carrier interval is 30 kHz, the duration of a time slot can be 0.5 milliseconds. Or, for example, when the subcarrier interval is 15kHz, the duration of one time slot may be 1 millisecond, and when the subcarrier interval is 30kHz, the duration of two time slots is 1 millisecond. A mini-slot (or mini-slot) may also include one or more symbols, but a mini-slot (or mini-slot) is a unit of time smaller than a slot. For example, one mini-slot (or mini-slot) may include 2 symbols, 4 symbols, or 7 symbols. One time slot may also include one or more mini time slots (or mini time slots). Figure 3 exemplarily shows time domain units such as radio frames, subframes, time slots, mini-slots, mini-slots, symbols, etc. when the sub-carrier spacing is 15 kHz.

The first time domain resource and the second time domain resource do not overlap in time. Optionally, the first time domain resource and the second time domain resource may be time domain resources in the same time unit. The time unit may include one or more symbols in the time domain.

In different application scenarios, the implementation of the first time domain resource and the second time domain resource may be different. For two possible application scenarios, the first time domain resource and the second time domain resource are described in detail below.

Scenario 1: Uplink information and sidelink information coexist.

In scenario 1, the first time domain resource can be used to carry uplink information and the first side link information, and the second time domain resource can be used to carry second side link information.

As shown in Figure 4, there is parallel transmission of uplink information and sidelink information in this time unit. The first terminal device can use part of the time domain resources in the time unit to send uplink information to the network device, and the first terminal device can also use part or all of the time domain resources in the time unit to send the uplink information to the second terminal device. Link information.

In this scenario, the first time domain resource and the second time domain resource in the time unit may be as shown in FIG. 5. It can be understood that the time domain resources occupied by the uplink information and the time domain resources occupied by the side link information overlap, but not completely overlap. The first time domain resource specifically refers to the overlapping portion of the time domain resource occupied by the uplink information and the time domain resource occupied by the side link information, and the second time domain resource specifically refers to the time domain resource occupied by the side link information , The part that does not overlap with the time domain resources occupied by the uplink information. The first side uplink information refers to the side link information in the first time domain resource, and the second side uplink information refers to the side link information in the second time domain resource.

The side link information in the embodiment of the present application may include one or more of side link control information, side link data information, or side link feedback information, where the side link control information may It is carried on the physical sidelink control channel (PSCCH), and the sidelink data information can be carried on the physical sidelink shared channel (PSSCH). The sidelink The control information may also be referred to as scheduling assignment (scheduling assignment, SA), and the side link data information may also be referred to as data (data) for short. Sidelink feedback information can be carried on the sidelink feedback channel (physical sidelink feedback channel, PSFCH), and the sidelink feedback information can include acknowledgement (acknowledge, ACK)/negative acknowledgement (NACK) , And/or, one or more items of information such as channel state information (CSI).

In this scenario, the side-link control information and the side-link data information may have multiple possible multiplexing modes. As shown in Figure 6, in option 1A, the side link control information and the side link data information can be multiplexed in a time division manner. That is, in a time unit, the time domain resources occupied by the side link control information and the side link data information are different. For example, different time domain symbols may be occupied, but the side link control information and the side link data The frequency domain resources occupied by the information are the same. In option 1B, the side link control information and the side link data information are also multiplexed in a time division manner. In a time unit, the time domain resources occupied by the side link control information and the side link data information are different, and the frequency domain resources occupied by the side link control information and the side link data information are also different. In option 2, the side link control information and the side link data information can be multiplexed by frequency division. In a time unit, the side-link control information and the side-link data information occupy the same time domain resources, but occupy different frequency domain resources. In option 3, the side link control information and the side link data information may also occupy different time domain resources and different frequency domain resources. That is, on some frequency domain resources, side link control information can be time-division multiplexed with side link data information, or it can be understood as, on some time domain resources, side link control information can be combined with side link data information. The side link data information is frequency division multiplexed.

Considering the multiple multiplexing modes of the side link control information and the side link data information in the side link information, the multiplexing of the uplink information and the side link information in the embodiment of the present application can be extended More scenarios are shown in Figure 7a to Figure 7c.

In the embodiment of the present application, the first terminal device has a constant transmission power for sending side-link information on symbols transmitted by side-link information in a time slot, and the uplink information and side-link information share the same Power amplifier (power amplifier, PA). It should be noted that the uplink information and the side link information may share a power amplifier on the same carrier, or may share a power amplifier on different carriers, and this application is not limited. The uplink information and the side link information sharing the same power amplifier can also be understood as the uplink information and the side link information sharing the same transmission channel or transmission link, or using the same radio frequency unit for transmission.

For the same power amplifier, if the transmission power of side-link information remains constant, when there is parallel transmission of uplink information and side-link information, if the time domain resources occupied by uplink information and side-link information If the overlap is not complete, the total transmit power of the first terminal device will jump. For example, as shown in scenario 1 in Figure 5, the side link information is transmitted in the entire time unit, and on each symbol included in the time unit, the transmission power of the side link information remains constant, which is always P1; The link information is sent on the second half of the time unit, and the transmission power of the uplink information is P2. It can be seen that due to the introduction of uplink information, on the time domain resources where side link information and uplink information exist at the same time, the total transmit power of the first terminal device will change from P1 to P1+P2, that is, the first The total transmit power of the terminal device has jumped. A jump in the total transmit power of the first terminal device will cause the phase of the side link information in the first time domain resource to be different from the phase in the second time domain resource, which will affect the second terminal device’s opposite side link Correct reception of information.

To this end, in this embodiment of the application, the first terminal device can send two DMRSs to the second terminal device, and the second terminal device demodulates the side link information in the first time domain resource according to the first DMRS, that is, the first Side link information, demodulate the side link information in the second time domain resource according to the second DMRS, that is, the second side link information, so as to avoid the jump caused by the total transmit power of the first terminal device Channel estimation problem improves the transmission performance of side link information.

Fig. 8a exemplarily shows the first DMRS and the second DMRS in scenario 1 of the embodiment of the present application, where the first DMRS is located in the first time domain resource, and the second DMRS is located in the second time domain resource. Specifically, the first DMRS may be used to demodulate the side link information in the first time domain resource, and the second DMRS may be used to demodulate the side link information in the second time domain resource.

In a possible implementation manner, the side link information in the first time domain resource includes side link control information and/or first side link data information, and the second time domain resource The side link information includes the second side link data information. The first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information .

In another possible implementation manner, the side link information in the first time domain resource includes first side link data information, and the side link information in the second time domain resource includes side link information. Uplink control information and/or second side uplink data information. The first DMRS is used to demodulate the first side uplink data information, and the second DMRS is used to demodulate the side uplink control information and/or the second side uplink data information .

Figure 8b exemplarily shows the first DMRS and the second DMRS in scenario 1 of the embodiment of the present application, where the first DMRS is located in the first time domain resource, and the second DMRS is located in the second time domain resource. Specifically, the first DMRS may be used to demodulate the side link data information in the first time domain resource, and the second DMRS may be used to demodulate the side link data information in the second time domain resource. That is, the first DMRS is a DMRS corresponding to the PSSCH in the first time domain resource, and the second DMRS is a DMRS corresponding to the PSSCH in the second time domain resource. Moreover, the ratio of the transmission power of the first DMRS to the transmission power of the side link data information in the first time domain resource may be 0 dB, and the transmission power of the second DMRS is relative to the transmission power of the side link data information in the second time domain resource. The ratio of the transmission power can be 0dB. Optionally, in this scenario, for the PSCCH, the first terminal device may further send the DMRS of the PSCCH to demodulate the side link control information in the second time domain resource.

Fig. 8c exemplarily shows the first DMRS and the second DMRS in scenario 1 of the embodiment of the present application, where the first DMRS is located in the first time domain resource, and the second DMRS is located in the second time domain resource. Specifically, the first DMRS can be used to demodulate side link control information and side link data information in the first time domain resource, and the second DMRS can be used to demodulate side link data in the second time domain resource. information. That is, the first DMRS may be a DMRS corresponding to the PSCCH in the first time domain resource, and the second DMRS is a DMRS corresponding to the PSSCH in the second time domain resource. Moreover, the ratio of the transmission power of the first DMRS to the transmission power of the side link data information in the first time domain resource may be 0 dB, and the transmission power of the second DMRS is relative to the transmission power of the side link data information in the second time domain resource. The ratio of the transmission power can be 0dB.

Optionally, when the first time domain resource is used to carry side link control information and the first side link data information, and the second time domain resource is used to carry second side link data information, the side link The control information is used to schedule the transmission of the first side uplink data information and the transmission of the second side uplink data information. Or, when the second time domain resource is used to carry side link control information and the second side link data information, and the first time domain resource is used to carry first side link data information, the side link control information Used to schedule the transmission of the first side uplink data information and the transmission of the second side uplink data information.

In the embodiment of the present application, the first terminal device may send first indication information to the second terminal device, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource. Or it can also be understood that the first indication information is used to indicate which symbols in the time unit have concurrency of uplink information and side link information, and/or which symbols have side link information. There is no transmission of uplink information. Or it can be understood that the first indication information is used to indicate which symbols in the time unit use the first DMRS for receiving and demodulating the side link information, and/or which symbols are used for the side link information The second DMRS performs reception demodulation.

In a possible design, the first time domain resource and/or the second time domain resource in the time unit can also be predefined, that is, it can be pre-defined that uplinks are allowed in certain symbol positions of a time unit Parallel transmission of information and side-link information, and/or, parallel transmission of uplink information and side-link information is not allowed in certain symbol positions in a time unit. Alternatively, certain symbol positions of a time unit can be pre-defined to allow the start (or end) of the parallel transmission of uplink information and side link information or power hopping, and/or which of the time units are allowed At the symbol position, it is not allowed to start (or end) the parallel transmission of uplink information and side link information or to allow power hopping. It should be understood that the “pre-defined” mentioned in the embodiments of the present application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing or pre-burning, which will not be described in detail below.

For example, as shown in Figure 9, the time unit is a time slot, and the time slot includes 14 symbols. The symbols that allow the start (or end) of uplink information and side link information to be sent in parallel may be the symbols in the time slot. The third symbol may also be the fifth symbol in the time slot, or the eighth symbol in the time slot, or the eleventh symbol in the time slot. In this way, if the symbol that allows the start (or end) of the parallel transmission of uplink information and side link information in this time slot is the 8th symbol, when there is a link between uplink information and side link information in this time slot When transmitting in parallel, the first time domain resource is the resource of the 8th symbol in the slot by default, and the second time domain resource is the resource of the symbols in the slot with side link information except the 8th symbol. Symbol resources. It can be understood that the symbols in a time slot are usually numbered from 0. The 3rd, 5th, 8th and 11th symbols in the time slot refer to the number 2 in the time slot. , The symbol numbered 4, numbered 7, and numbered 10. It should also be understood that the description here is based on the example that the time domain resource that allows the start (or end) of the uplink information and the side link information to be sent in parallel is a single symbol in the time slot, but the uplink information is allowed to exist in a time slot. The time domain resources that the link information and the side link information are sent in parallel may also include multiple symbols in the time slot, and the multiple symbols may be continuous or discontinuous, which is not limited by this application.

Specifically, the first time domain resource may be a symbol used for sidelink information transmission after the beginning symbol, or the first time domain resource may be a symbol used for sidelink information transmission before the ending symbol. Optionally, the first time domain resource may include a start symbol or an end symbol.

Specifically, the second time domain resource may be a symbol used for sidelink information transmission before the beginning symbol, or the second time domain resource may be a symbol used for sidelink information transmission after the end symbol. Optionally, the second time domain resource may include a start symbol or an end symbol.

In another possible design, the first time domain resource and/or the second time domain resource may have multiple possible candidate resource positions, and the first indication information may indicate the first time domain resource and/or the second time domain resource. Which one or more of the multiple candidate resource positions the time domain resource is located in. The number of candidate resource locations can be 2, 4, 8, or other values, which is not limited in this application. For example, if the first time domain resource and/or the second time domain resource have 2 candidate resource positions, the first time domain resource and/or the second time domain resource can be indicated by 1 bit; if the first time domain resource and / Or the second time domain resource has 4 candidate resource positions, the first time domain resource and/or the second time domain resource can be indicated by 2 bits; if the first time domain resource and/or the second time domain resource has 8 If there are two candidate resource positions, the first time domain resource and/or the second time domain resource can be indicated by 3 bits.

In another possible design, the first time domain resource and/or the second time domain resource may also be indicated by means of a bitmap. For example, if the time unit is a time slot, and a time slot includes 14 symbols, then the bitmap can include 14 bits, and the value of each bit can be 0 or 1. When the value of a bit is 1, it can indicate that the symbol corresponding to the bit belongs to the first time domain resource and/or the second time domain resource, that is, the symbol corresponding to the bit has uplink information and side link information Parallel sending. When the value of a bit is 0, it can indicate that the symbol corresponding to the bit does not belong to the first time domain resource and/or the second time domain resource, and the symbol corresponding to the bit may have side link information sent and not There is transmission of uplink information, or there is transmission of uplink information and there is no transmission of side link information. Or, the meaning when the value of a bit in a bitmap is 1 and when the value is 0 can also be reversed. That is, when the value of a bit is 0, it can indicate that the symbol corresponding to the bit belongs to the first time domain resource and/or the second time domain resource. When the value of a bit is 1, it can indicate that The symbol corresponding to the bit does not belong to the first time domain resource and/or the second time domain resource.

Optionally, the first time domain resource may refer to a time domain resource used for sidelink information transmission except for the second time domain resource in a time unit.

Optionally, the second time domain resource may refer to a time domain resource used for sidelink information transmission except the first time domain resource in a time unit.

Therefore, the first indication information may indicate the first time domain resource, and the second time domain resource is determined according to the foregoing relationship between the first time domain resource and the second time domain resource. Or the first indication information may indicate the second time domain resource, and the first time domain resource is determined according to the foregoing relationship between the first time domain resource and the second time domain resource.

It should be noted that the first indication information may be sent through the SCI, that is, the side link control information sent by the first terminal device to the second terminal device includes the first indication information. Optionally, the network device may send the first indication information to the first terminal device, for example, through physical layer information (such as downlink control information (DCI)) or high-layer signaling. That is, the first indication information is also sent After being received by the first terminal device from the network device through DCI, it can then be sent to the second terminal device through SCI.

In the embodiment of the present application, the positions of the first DMRS and the second DMRS are not specifically limited. In a possible design, the first terminal device may send the second indication information to the second terminal device for indicating the location of the first DMRS and/or the location of the second DMRS. The first indication information may be sent through the SCI, that is, the side link control information sent by the first terminal device to the second terminal device may include the second indication information. Optionally, the network device may send the second indication information to the first terminal device, for example, it may be sent through physical layer information (such as DCI) or high-layer signaling. That is, the second indication information may also be received by the first terminal device from the network device through DCI, and then sent to the second terminal device through SCI.

In another possible design, the location of the first DMRS and/or the location of the second DMRS may also be predefined in the system. For example, as shown in FIG. 10, the time unit is a time slot, and the position of the first DMRS can be predefined as the third symbol or the fourth symbol in the time slot, and/or the position of the second DMRS can be pre-defined Defined as the 10th symbol or the 11th symbol in the time slot.

In another possible design, the location of the first DMRS and/or the location of the second DMRS is also determined according to the first time domain resource and/or the second time domain resource. Optionally, the location of the first DMRS and/or the location of the second DMRS is determined according to the location of the first time domain resource and the location of the second time domain resource. For example, the first DMRS may be the first symbol included in the first time domain resource, and/or, the second DMRS may be the first symbol included in the second time domain resource. As shown in Figure 11, the time unit is a time slot, the first time domain resource includes the 3rd to 8th symbols in the time slot, and the second time domain resource includes the 9th to 14th symbols in the time slot. Symbols, then the position of the first DMRS may be the 3rd symbol in the slot, and/or the position of the second DMRS may be the 9th symbol in the slot.

In another possible design, the second indication information may indicate the location of the first DMRS, and the location of the second DMRS is determined according to a predefined or second time domain resource, or may also be determined in other ways. Alternatively, the second indication information may also indicate the location of the second DMRS, and the location of the first DMRS is determined according to a predefined or second time domain resource, or may also be determined in other ways.

In another possible design, as shown in FIG. 12a and FIG. 12b, the position of the first DMRS and the pattern of the first time domain resource may be predefined, and/or the position of the second DMRS and the second time domain resource picture of.

Alternatively, the DMRS location and the pattern of time domain resources can also be predefined. This pattern can be applied to the first time domain resource or the second time domain resource.

In this solution, the first terminal device may send instruction information to the second terminal device, where the instruction information is used to indicate the DMRS location and the pattern information of the time domain resource. According to the pattern information, the terminal device can determine the positions of the first DMRS and the second DMRS. And, according to the pattern information, the terminal device can determine the first time domain resource and the second time domain resource. The indication information may be sent through the SCI, that is, the side link control information sent by the first terminal device to the second terminal device may include the indication information. Optionally, the network device may send the indication information to the first terminal device, for example, it may be sent through physical layer information (such as DCI) or high-layer signaling. That is, the instruction information may also be received by the first terminal device from the network device through DCI, and then sent to the second terminal device through SCI.

For example, the predefined patterns can have one or more of the following:

The pattern in Figure 12a is a pattern corresponding to a time slot. The pattern includes a first time domain resource and a second time domain resource for transmitting side link information.

The pattern in Figure 12b is a pattern corresponding to one or more symbols. The time domain resource used for transmitting the side link information in the time unit may include one or more patterns. For example, the first time domain resource corresponds to a pattern, the second time domain resource corresponds to a pattern, and so on. The patterns corresponding to the first time domain resource and the second time domain resource may be the same or different.

The indication information may indicate that one or more patterns are time domain resources of side link information. For example, it is indicated as pattern 1 and pattern 2 in FIG. 12b, or pattern 1 and pattern 6, or pattern 4, or pattern 8 as the time domain resource of side link information. If two patterns are indicated, it can be indicated that the first pattern is the pattern corresponding to the first time domain resource, and the second pattern is the pattern corresponding to the second time domain resource. According to the indicated pattern, the terminal device can determine the first time domain resource, the first DMRS, the second time domain resource, and the second DMRS.

In the embodiment of the present application, the first terminal device may also send third indication information to the second terminal device, where the third indication information is used to indicate whether there is a power jump in the total transmit power of the first terminal device in the time unit, or It is used to indicate whether there is parallel transmission of uplink information and side link information in a time unit, or is used to indicate whether there is a first time domain resource and a second time domain resource in a time unit. If there is power hopping, or there are first time domain resources and second time domain resources, it means that different areas need to use different DMRS for receiving and demodulating. Or, the third indication information is used to indicate whether different areas are demodulated according to different DMRS.

The side link control information and the side link data information in the side link information in the second scenario are multiplexed in option 3.

In the second scenario, the first time domain resource is used to carry side link control information and the first side link data information, and the second time domain resource is used to carry the second side link data information. The link control information is used to schedule the transmission of the first side uplink data information and the transmission of the second side uplink data information. In this scenario, as shown in FIG. 13, the first terminal device may send side link information to the second terminal device. The side link information includes side link control information and side link data information, and the side link control information and side link data information are multiplexed using option 3 shown in FIG. 6.

FIG. 14 exemplarily shows the first time domain resource and the second time domain resource in this scenario. The first time domain resource contains side link control information and side link data information multiplexed in a frequency division manner. , There is side link data information and no side link control information in the second time domain resource. In this way, the first time domain resource specifically refers to the time domain resource where the side link data information is multiplexed with the side link control information, and the second time domain resource specifically refers to the side link data information that is not related to the side link control information. Time domain resources for control information reuse. The first side uplink data information refers to the side uplink data information in the first time domain resource, and the second side uplink data information refers to the side uplink data information in the second time domain resource.

The multiplexing mode of side link control information and side link data information can be understood from the perspective of frequency domain, which can also be understood as the existence of side link control multiplexed in frequency division on some time domain resources. Information and side-link data information, and there is side-link data information and no side-link control information on other time domain resources included in the time unit.

It should be noted that this scenario does not consider whether there is parallel transmission of uplink information and side-link information in a time unit, and there may be parallel transmission of uplink information and side-link information in this time unit. There may be no parallel transmission of uplink information and side link information, which is not limited in this application.

In this scenario, it is also required that the transmission power of the side uplink information on the symbols transmitted in the time slot be kept constant. Optionally, in order to improve the performance of the PSCCH, the first terminal device may perform power amplification on the PSCCH when transmitting the side link information. For example, the transmission power of the PSCCH may be 3 dB higher than the transmission power of the PSSCH. It can be seen that if the first terminal device keeps the transmission power of the side link information constant, but at the same time amplifies the power of the side link control information, the side link data information transmitted on the first time domain resource will be caused The transmit power of is different from the transmit power of the side link data information transmitted on the second time domain resource, and the transmit power of the side link data information on the resource block in the first time domain resource will be less than that of the second time domain resource The transmit power of the side link data information on the resource block. In this way, if the same DMRS is used to demodulate the side link data information in the first time domain resource and the side link data information in the second time domain resource, the transmission power of the DMRS is the same as that in the first time domain resource. The ratio of the transmission power of the side link data information is different from the ratio of the transmission power of the DMRS to the transmission power of the side link data information in the second time domain resource. Therefore, it may cause the first time domain resource or The side link data information in the second time domain resource is received incorrectly.

In view of the different transmission powers of uplink data information on different time domain resources, in this embodiment of the application, the first terminal device may send two DMRSs to the second terminal device, and the second terminal device demodulates the first DMRS according to the first DMRS. The side link control information and/or the first side link data information in the time domain resource are demodulated according to the second DMRS to the second side link data information in the second time domain resource.

Figures 15a and 15b exemplarily show the first DMRS and the second DMRS in the second scenario of an embodiment of the present application, where the first DMRS is located in the first time domain resource, and the second DMRS is located in the second time domain resource.

Specifically, in a possible solution, the first DMRS is a DMRS of PSCCH, and the second DMRS is a DMRS of PSSCH. Under this scheme, the first DMRS is used for the demodulation of side link control information and the first side link data information in the first time domain resource, and the second DMRS is used for the second time domain resource in the second time domain. Demodulation of side link data information. For example, in FIG. 15a, the first DMRS is used to demodulate the side link control information and the first side link data information in the first time domain resource. The frequency domain resources occupied by the first DMRS are the same as the frequency domain resources occupied by the side link control information, and the transmission power of the first DMRS and the side link control information is also the same, that is, the ratio of the transmission power is 0dB, so the first DMRS can be understood as the DMRS of PSCCH, that is, the DMRS used to decode PSCCH. The ratio of the transmission power of the first DMRS to the transmission power of the first side uplink data information is 3 dB, and the second terminal device is based on the first DMRS and the transmission power of the first DMRS and the first side uplink data information. The ratio of the transmission power can also demodulate the first side uplink data information. The second DMRS is used to demodulate the second side link data information in the second time domain resource. The frequency domain resources occupied by the second DMRS are the same as the frequency domain resources occupied by the second side uplink data information, and the transmission power of the second DMRS and the second side uplink data information is also the same, that is, the ratio of the transmission power is 0dB Therefore, the second DMRS can be understood as the DMRS of the PSSCH, that is, the DMRS used to decode the PSSCH.

Specifically, in a possible solution, the first DMRS is the DMRS of the PSSCH, and the second DMRS is the DMRS of the PSSCH. Under this scheme, the first DMRS is used for demodulation of the first side uplink data information in the first time domain resource, and the second DMRS is used for the demodulation of the second side uplink data information in the second time domain resource. demodulation. For example, in Figure 15b, the first DMRS is used to demodulate the first side uplink data information in the first time domain resource. The frequency domain resources occupied by the first DMRS are the same as the frequency occupied by the first side uplink data information. The domain resources are the same, and the transmission power of the first DMRS is the same as the transmission power of the first side uplink data information, and the ratio of the transmission power is 0 dB. The second DMRS is used to demodulate the second side uplink data information in the second time domain resource. The frequency domain resources occupied by the second DMRS are the same as the frequency domain resources occupied by the second side uplink data information. The transmission power of the second DMRS is the same as the transmission power of the second side uplink data information, and the ratio of the transmission power is 0 dB. It can be understood that the first DMRS and the second DMRS are both PSSCH DMRS. Optionally, in this scenario, for the PSCCH, the first terminal device may further send the DMRS of the PSCCH for demodulation of the side link control information.

In the embodiment of the present application, the positions of the first DMRS and the second DMRS are not specifically limited. In a possible design, the first terminal device may send the second indication information to the second terminal device for indicating the location of the first DMRS and/or the location of the second DMRS. The second indication information may be sent through the SCI, that is, the side link control information sent by the first terminal device to the second terminal device may include the second indication information. Optionally, the network device may send the second indication information to the first terminal device, for example, it may be sent through physical layer information (such as DCI) or high-layer signaling. That is, the second indication information may also be received by the first terminal device from the network device through DCI, and then sent to the second terminal device through SCI.

In another possible design, the location of the first DMRS and/or the location of the second DMRS may also be predefined in the system. For example, the time unit is a slot, the first DMRS is predefined as the 3rd symbol or the 4th symbol in the slot, and the second DMRS is predefined as the 10th symbol or the 11th symbol in the slot.

In another possible design, the location of the first DMRS and/or the location of the second DMRS are also determined according to the first time domain resource and the second time domain resource. For example, the position of the first DMRS may be the first symbol included in the first time domain resource, and/or the position of the second DMRS may be the first symbol included in the second time domain resource.

It should be noted that the side link information described in the embodiment of the present application may also include side link feedback information. The sidelink feedback information can be carried on the sidelink feedback channel (physical sidelink feedback channel, PSFCH), and the sidelink feedback information can include an acknowledgement (acknowledge, ACK)/negative acknowledgement (NACK). ), and/or, one or more of channel state information (CSI) and other information.

Optionally, the terminal device reports first capability information, where the first capability information is used to indicate whether to support the ability to transmit uplink information and side link information under power hopping.

For example, the terminal device can report the ability to support the transmission of uplink information and side link information under power hopping. Then the terminal device can keep the power of the side link information constant, and perform concurrent concurrency of the uplink information and the side link information.

For example, the terminal device can report the ability to send uplink information and side link information that does not support power hopping. Then the terminal device can keep the total power of the uplink information and the side link information constant, and perform concurrent concurrency of the uplink information and the side link information.

Optionally, the terminal device reports second capability information, where the second capability information is used to indicate whether to support the concurrent capability of uplink information and side link information when time domain resources are not completely overlapped.

For example, the terminal device can report the concurrent capability of supporting uplink information and side link information when time domain resources are not completely overlapped. Then, when the time domain resources of the uplink information and the side link information partially overlap, the terminal device may perform concurrent concurrency of the uplink information and the side link information.

For example, the terminal device may report the concurrent capability of uplink information and sidelink information when the time domain resources are not completely overlapped. Then, the terminal device can perform the concurrent transmission of the uplink information and the side link information signal when the time domain resources of the uplink information and the side link information completely overlap.

Optionally, the terminal device may report third capability information, where the third capability information is used to indicate whether to support the capability of the concurrent situation of uplink information and side link information.

For example, for the situations in FIG. 7a, FIG. 7b, and FIG. 7c described in the embodiments of the present application, the terminal device may report which one or more of the above situations are supported.

For example, for the situations in FIG. 7a, FIG. 7b, and FIG. 7c described in the embodiments of the present application, the terminal device may report which one or more of the above situations is not supported.

Please refer to FIG. 16, which is a schematic flowchart of another communication method provided by an embodiment of this application. The method includes the following steps S1601 to S1604:

Step S1601, the first terminal device generates a third DMRS, and sends the third DMRS.

The third DMRS is located in the first time domain resource, and the third DMRS is used to demodulate the first side uplink data information in the first time domain resource and the second side uplink data information in the second time domain resource , The first time domain resource and the second time domain resource do not overlap in time. For the specific implementation manners of the first time domain resource and the second time domain resource here, reference may be made to the description of the scenario 2 in the foregoing embodiment, which will not be repeated here.

In the embodiment of the present application, the first side link information in the first time domain resource may include side link control information and the first side link data information, and the second side link information in the second time domain resource The path information includes second side uplink data information, and the side uplink control information can be used to schedule the transmission of the first side uplink data information and the transmission of the second side uplink data information.

FIG. 17 exemplarily shows a third DMRS provided by an embodiment of the present application. The third DMRS is located in the first time domain resource and can occupy the same frequency domain resource as the first side uplink data information.

Step S1602, the second terminal device receives the third DMRS.

Step S1603: The first terminal device generates first information, and sends the first information. The first information is used to indicate a first power ratio, and the first power ratio is a ratio of the transmission power of the third DMRS to the transmission power of the second side uplink data information. The ratio may be 3dB, for example.

Step S1604: The second terminal device receives the first information.

It should be noted that the present application does not specifically limit the execution sequence of the foregoing steps S1601 to S1604, and the execution sequence between the steps is defined in accordance with its inherent logic. For example, the first terminal device generates the third DMRS before sending the third DMRS, but the first terminal device generates the first information and sends the first information, and the first terminal sends the third DMRS, there is no certain sequence Relationships can be generated at the same time or at different times, and can also be sent at the same time or at different times. There is no certain sequence relationship between the second terminal device receiving the third DMRS and the second terminal receiving the first information, and may be received at the same time or at different times. The second terminal device may receive the third DMRS before the first terminal device generates and/or transmits the first information, or the second terminal device may receive the third DMRS after the first terminal device generates and/or transmits the third DMRS. The second terminal device may receive the first information before the first terminal device generates and/or transmits the third DMRS, or the second terminal device may receive the first information after the first terminal device generates and/or transmits the third DMRS.

Specifically, the third DMRS may be used to demodulate the first side uplink data information and the second side uplink data information.

After receiving the third DMRS and the first information, the second terminal device may demodulate the first side uplink data information according to the third DMRS. The second terminal device may also demodulate the second side uplink data according to the third DMRS and the ratio between the transmission power of the third DMRS and the transmission power of the second side uplink information indicated in the first information information.

In a possible design, the first terminal device may also generate second information, which is used to indicate a second power ratio, where the second power ratio is the transmit power of the third DMRS and the first side uplink The ratio between the transmission power of data messages. Optionally, since the third DMRS and the first side uplink data information are both located in the first time domain resource, usually the transmission power of the two is the same, therefore, the second power ratio may be 0 dB.

It should be noted that, in this embodiment of the application, the first terminal device may indicate to the second terminal device the first power ratio, and/or the second power by sending sidelink information (SCI). ratio. The above two power ratios can be indicated in the same SCI, or in different SCIs. Optionally, the network device may send the first power ratio and/or the second power ratio to the first terminal device, for example, through physical layer information (such as DCI) and/or high-layer signaling. That is, the above-mentioned first power ratio and/or second power ratio may also be sent by the network device to the first terminal device through physical layer information (such as DCI) and/or high-level signaling (such as RRC messages), and then the first The terminal device sends to the second terminal device through the SCI. In addition, the first terminal device may directly indicate the specific value of any one of the above-mentioned power ratios, or may indicate the index of any one of the above-mentioned power ratios among multiple candidate power ratios, or one of the power ratios may indicate the specific value, and the other The power ratio indicates the index of the power ratio, which is not limited here. The multiple candidate power ratios may include values such as 0dB, 3dB, -3dB, etc., and may also include other values, which will not be listed here.

Optionally, the first terminal device may not send the foregoing first information and/or second information. For example, the first power ratio and/or the second power ratio may be predefined, or may be obtained through calculations. Specifically, this application does not limit this.

For example, if in the time unit, the total transmission power of the side uplink information on the symbol transmitted by the side uplink information is constant P, the frequency domain resource occupied by the side uplink control information is B1, and the side uplink data information The total frequency domain resource occupied is B2, then the frequency domain resource occupied by the side link control information in the first time domain resource is B1, and the frequency domain resource occupied by the side link data information is (B2-B1). The power of the side link data information in the second time domain resource is P, assuming that in the first used resource, the power of the side link control information is N dB higher than the power of the side link data information, where N is Integer.

According to the power calculation formula:

The power of the side link information in the first time domain resource is as follows:

The power formula of PSSCH (SA) is:

The power formula of PSSCH(data) is:

The power of the side link information in the second time domain resource is as follows:

The power formula of PSSCH(data) is:

10log ₁₀ (B2)+P ₁ +α ₁ *PL

Among them, P ₀ and α ₀ may be configured through high-level parameters and may be associated with PSCCH, and they may be high-level parameters configured by the base station or the operator for the terminal device. P ₁ and α ₁ may be configured through high-level parameters and may be associated with the PSSCH, and they may be high-level parameters configured by the base station or the operator for the terminal device. PL is the path loss.

In order to ensure that the total transmission power of the side uplink on the symbols of the time slot is constant, an example is as follows. Need to meet the following:

Where, A is the power scaling factor under the multiplexed symbol, that is, it can be understood that A is the power ratio of the side link data information in the second time domain resource to the side link information in the first time domain resource.

Assume P ₀ =P ₁ and α ₀ =α ₁ . It can be determined that the value of A is:

The power ratio in the embodiment of the present application can also be understood as the power difference, which is specifically not limited in the present application.

Please refer to FIG. 18, which is a schematic flowchart of another communication method provided by an embodiment of this application. The method includes the following steps S1801 to S1804:

Step S1801, the first terminal device generates a fourth DMRS, and sends the fourth DMRS.

The fourth DMRS is located in the second time domain resource, and the fourth DMRS is used to demodulate the first side uplink data information in the first time domain resource and the second side uplink data information in the second time domain resource , The first time domain resource and the second time domain resource do not overlap in time. For the specific implementation manners of the first time domain resource and the second time domain resource here, reference may be made to the description of the scenario 2 in the foregoing embodiment, which will not be repeated here.

In the embodiment of the present application, the first side uplink information may include side uplink control information and first side uplink data information, and the second side uplink information includes second side uplink data information. The uplink control information can be used to schedule the transmission of the first side uplink data information and the transmission of the second side uplink data information.

FIG. 19 exemplarily shows a fourth DMRS provided by an embodiment of the present application. The fourth DMRS is located in a second time domain resource and may occupy the same frequency domain resource as the second side uplink data information.

Step S1802, the second terminal device receives the fourth DMRS.

Step S1803: The first terminal device generates third information, and sends the third information. The third information is used for the third power ratio, and the third power ratio is the ratio of the transmission power of the fourth DMRS to the transmission power of the first side uplink data information. The ratio may be 3dB, for example.

Step S1804: The second terminal device receives the third information.

It should be noted that the present application does not specifically limit the execution sequence of the above steps S1801 to S1804, and the execution sequence of each step is defined in accordance with its inherent logic. For example, the first terminal device generates the fourth DMRS before sending the fourth DMRS, but the first terminal device generates the first information and sends the third information, and the first terminal sends the fourth DMRS, there is no certain sequence Relationships can be generated at the same time or at different times, and can also be sent at the same time or at different times. There is no certain sequence relationship between the second terminal device receiving the fourth DMRS and the second terminal receiving the third information, and may be received at the same time or at different times. The second terminal device may receive the fourth DMRS before the first terminal device generates and/or transmits the third information, or the second terminal device may receive the fourth DMRS after the first terminal device generates and/or transmits the fourth DMRS. The second terminal device may receive the third information before the first terminal device generates and/or transmits the fourth DMRS, or the second terminal device may receive the third information after the first terminal device generates and/or transmits the fourth DMRS.

After receiving the fourth DMRS and the third information, the second terminal device may demodulate the second side uplink data information according to the fourth DMRS. The second terminal device may also demodulate the first side uplink data information according to the fourth DMRS and the ratio of the transmission power of the fourth DMRS and the transmission power of the first side uplink information indicated in the third information.

In a possible design, the first terminal device may also generate fourth information, which is used to indicate a fourth power ratio, where the fourth power ratio is the transmit power of the fourth DMRS and the second side uplink The ratio of the transmission power of the data message. Optionally, since the fourth DMRS and the second side uplink data information are both located in the second time domain resource, usually the transmission power of the two is the same, so the ratio may be 0 dB.

It should be noted that in this embodiment of the present application, the first terminal device may indicate the third power ratio and/or the fourth power ratio to the second terminal device by sending sidelink information (SCI). The above two power ratios can be indicated in the same SCI, or in different SCIs. Optionally, the network device may send the first power ratio and/or the second power ratio to the first terminal device, for example, through physical layer information (such as DCI) and/or high-layer signaling. That is, the aforementioned third power ratio and/or fourth power ratio may also be sent by the network device to the first terminal device through physical layer information (such as DCI) and/or high-layer signaling (such as RRC messages), and then the first terminal The terminal device sends to the second terminal device through the SCI. In addition, the first terminal device may directly indicate the specific value of any one of the above-mentioned power ratios, or may indicate the index of any one of the above-mentioned power ratios among multiple candidate power ratios, or one of the power ratios may indicate the specific value, and the other The power ratio indicates the index of the power ratio, which is not limited here. The multiple candidate power ratios may include values such as 0dB, 3dB, -3dB, etc., and may also include other values, which will not be listed here.

Optionally, the first terminal device may not send the foregoing third information and/or fourth information. For example, the third power ratio and/or the fourth power ratio may be predefined, or may be obtained through calculations. Specifically, this application does not limit this. For example, you can refer to the calculation method of the power ratio in the foregoing embodiment, and the details are not repeated here.

The power ratio in the embodiment of this application may also be referred to as the power difference, which is specifically not limited in this application.

Optionally, for the solutions shown in FIG. 17 and FIG. 18, when the first terminal device sends a DMRS, the DMRS is used to demodulate the first side uplink data information and the second time domain in the first time domain resource. In the case of the second side uplink data information in the resource, whether the symbol position of the DMRS is located in the first time domain resource or the second time domain resource may be predefined, or may be notified by the first terminal device through signaling Of the second terminal device. Optionally, the network device may send indication information to the first terminal device to inform the DMRS location, for example, it may be sent to the terminal device through physical layer information (such as DCI) and/or high-level signaling. In this case, when the terminal device determines the power ratio, it can be determined according to the following method:

When indicating the first power ratio or the third power ratio, it is necessary to determine whether the currently indicated power ratio is the first power ratio or the third power ratio. The following two methods can be used:

A possible implementation method is to determine whether the first power ratio or the third power ratio is indicated in the signaling according to the symbol position of the DMRS.

For example, when the symbol position of the DMRS is located in the first time domain resource, the signaling indicates the first power ratio.

For example, when the symbol position of the DMRS is located in the second time domain resource, the signaling indicates the third power ratio.

Another possible implementation method is to determine whether the first power ratio or the third power ratio is indicated in the signaling according to the pattern information of the DMRS.

Wherein, the DMRS pattern contains the position information of the DMRS, and determining the power ratio indicated in the signaling according to the DMRS pattern is similar to determining the power ratio in the signaling according to the symbol position of the DMRS. Specifically, this application will not repeat it.

Optionally, for the multiplexing of side link control information and side link data information in option 3, in the various embodiments described above, the terminal device can report its own fourth capability information, which is used to indicate Whether to support the above multiple transmission schemes. The multiple transmission schemes include that the first terminal device sends the first DMRS and the second DMRS to demodulate the first side uplink data information and the second side uplink data information, and the first terminal device sends the third DMRS. To demodulate the first side uplink data information and the second side uplink data information, the first terminal device sends a fourth DMRS for demodulating the first side uplink data information and the second side uplink data information .

Optionally, the foregoing multiple transmission schemes may be a predefined one, or the first terminal device may send instruction information to the second terminal device, and the instruction information is used to indicate which of the foregoing transmission schemes is used for side link information transmission Program. For example, the indication information may be sent through the SCI, that is, the side link control information sent by the first terminal device to the second terminal device may include the indication information. Optionally, the network device may send the indication information to the first terminal device, for example, it may be sent through physical layer information (such as DCI) or high-layer signaling. That is, the instruction information may also be received by the first terminal device from the network device through DCI, and then sent to the second terminal device through SCI.

Corresponding to the methods given in the foregoing method embodiments, the embodiments of the present application also provide corresponding devices, and the devices include corresponding modules for executing the foregoing embodiments. The module can be software, hardware, or a combination of software and hardware.

Figure 20 shows a schematic diagram of a device. The apparatus 2000 may be a terminal device, or a chip, a chip system, or a processor that supports the terminal device to implement the foregoing method. The device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.

The device 2000 may include one or more processors 2001, and the processor 2001 may also be referred to as a processing unit, which may implement certain control functions. The processor 2001 may be a general-purpose processor or a special-purpose processor. For example, it can 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 processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process Software program data.

In an optional design, the processor 2001 may also store instructions and/or data 2003, and the instructions and/or data 1503 may be executed by the processor, so that the apparatus 2000 executes the above method embodiments Described method.

In another optional design, the processor 2001 may include a transceiver unit for implementing receiving and sending functions. For example, the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces, or interface circuits used to implement the receiving and sending functions can be separate or integrated. The foregoing transceiver circuit, interface, or interface circuit can be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit can be used for signal transmission or transmission.

In yet another possible design, the device 2000 may include a circuit, which may implement the sending or receiving or communication function in the foregoing method embodiment.

Optionally, the device 2000 may include one or more memories 2002, on which instructions 2004 may be stored, and the instructions may be executed on the processor, so that the device 2000 executes the foregoing method embodiments Described method. Optionally, data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. The processor and memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.

Optionally, the device 2000 may further include a transceiver 2005 and/or an antenna 2006. The processor 2001 may be referred to as a processing unit, and controls the device 2000. The transceiver 2005 may be called a transceiver unit, a transceiver, a transceiver circuit or a transceiver, etc., for implementing the transceiver function.

In a possible design, an apparatus 2000 (for example, an integrated circuit, a wireless device, a circuit module, or a terminal device, etc.) may include a processor, which is coupled to a memory, and the memory is used to store a program Or an instruction, when the program or instruction is executed by the processor, causes the apparatus to execute the method shown in FIG. 2.

Since the apparatus 2000 can transmit the first DMRS used to demodulate the first side link information in the first time domain resource and the second side link information used to demodulate the second time domain resource in the same time unit The second DMRS of the link information, so that the side link information in the two time domain resources that do not overlap in the time domain can be received and demodulated using different DMRS, thereby improving the transmission performance on the side link .

The processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), and P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The device described in the above embodiment may be a network device or a terminal device, but the scope of the device described in this application is not limited to this, and the structure of the device may not be limited by FIG. 20. The device can be a standalone device or can be part of a larger device. For example, the device may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A collection with one or more ICs. Optionally, the IC collection may also include storage components for storing data and/or instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handhelds, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

Figure 21 provides a schematic structural diagram of a terminal device. The terminal device can be applied to the scenario shown in FIG. 4 or FIG. 13. For ease of description, FIG. 21 only shows the main components of the terminal device. As shown in FIG. 21, the terminal device 2100 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.

When the terminal device is turned on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal out in the form of electromagnetic waves through the antenna. . When data is sent to the terminal equipment, the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and performs processing on the data. deal with.

For ease of description, FIG. 21 only shows a memory and a processor. In actual terminal devices, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present invention.

As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal device and execute Software program, processing the data of the software program. The processor in FIG. 21 integrates 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, and are interconnected by technologies such as buses. 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 can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In an example, the antenna and control circuit with the transceiver function can be regarded as the transceiver unit 2111 of the terminal device 2100, and the processor with the processing function can be regarded as the processing unit 2112 of the terminal device 2100. As shown in FIG. 21, the terminal device 2100 includes a transceiver unit 2111 and a processing unit 2112. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 2111 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 2111 can be regarded as the sending unit, that is, the transceiver unit 2111 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the foregoing receiving unit and sending unit may be an integrated unit or multiple independent units. The above-mentioned receiving unit and sending unit may be in one geographic location, or may be scattered in multiple geographic locations.

As shown in FIG. 22, another embodiment of the present application provides an apparatus 2200. The device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.). The device may also be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.). The device may also be another communication module, which is used to implement the method in the method embodiment of the present application. The apparatus 2200 may include: a processing module: 2202 (processing unit). Optionally, it may also include a transceiver module 2201 (transceiver unit) and a storage module 2203 (storage unit).

In a possible design, one or more modules in Figure 22 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It can be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application. The processor, memory, and transceiver can be set separately or integrated.

The device has the function of realizing the terminal device described in the embodiment of this application. For example, the device includes a terminal device to execute the module or unit or means corresponding to the step related to the terminal device described in the embodiment of this application. The function Or a unit or means (means) can be implemented by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware. For details, please refer to the corresponding description in the foregoing corresponding method embodiment.

Or the device has the function of implementing the network device described in the embodiment of this application. For example, the device includes the module or unit or means corresponding to the network device executing the steps involved in the network device described in the embodiment of this application, The functions or units or means (means) can be realized by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware. For details, please refer to the corresponding description in the foregoing corresponding method embodiment.

Optionally, each module in the apparatus 2200 in the embodiment of the present application may be used to execute the method described in FIG. 2, FIG. 16, or FIG. 17 in the embodiment of the present application.

In a possible implementation manner, an apparatus 2200 may include: a processing module 2202, configured to generate a first demodulation reference signal DMRS; the transceiver module 2201 is configured to send the first DMRS, and the first DMRS is configured to Demodulate the first side uplink information in the first time domain resource; the processing module 2202 is also used to generate a second DMRS, the transceiver module 2201 is also used to send the second DMRS, the second DMRS is used Demodulate the second side link information in the second time domain resource; wherein, the first DMRS and the second DMRS are located in the same time unit, and the first time domain resource and the second time domain Resources do not overlap in time.

Optionally, the first time domain resource is also used to carry uplink information.

Optionally, the first side uplink information includes side uplink control information and first side uplink data information, and the second side uplink information includes second side uplink data information; The first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information.

Optionally, the side link control information is used to schedule the transmission of the first side link data information and the transmission of the second side link data information.

Optionally, the transceiver module 2201 is further configured to send first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource.

Optionally, the transceiver module 2201 is further configured to send second indication information, where the second indication information is used to indicate the location of the first DMRS and/or the location of the second DMRS.

In another possible implementation manner, an apparatus 2200 may include:

The transceiver module 2201 is configured to receive a first demodulation reference signal DMRS, where the first DMRS is used to demodulate the first side uplink information in the first time domain resource; the transceiver module 2201 is also configured to receive Two DMRS, the second DMRS is used to demodulate the second side uplink information in the second time domain resource; the processing module 2202 is used to demodulate the first side in the first time domain resource according to the first DMRS Uplink information, and demodulate the second side uplink information in the second time domain resource according to the second DMRS; wherein the first DMRS and the second DMRS are located in the same time unit, and the first DMRS A time domain resource and the second time domain resource do not overlap in time.

Optionally, the transceiver module 2201 is further configured to: receive first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource.

Optionally, the transceiver module 2201 is further configured to receive second indication information, where the second indication information is used to indicate the location of the first DMRS and/or the location of the second DMRS.

Since the device 2200 can transmit the first DMRS used to demodulate the first side link information in the first time domain resource and the second side link information used to demodulate the second time domain resource in the same time unit The second DMRS of the link information, so that the side link information in the two time domain resources that do not overlap in the time domain can be received and demodulated using different DMRS, thereby improving the transmission performance on the side link .

It is understandable that some optional features in the embodiments of the present application, in some scenarios, may not depend on other features, such as the solutions they are currently based on, but are implemented independently to solve corresponding technical problems and achieve corresponding The effect can also be combined with other features according to requirements in some scenarios. Correspondingly, the devices given in the embodiments of the present application can also implement these features or functions accordingly, which will not be repeated here.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such a function is realized by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as going beyond the protection scope of the embodiments of the present application.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.

The technology described in this application can be implemented in various ways. For example, these technologies can be implemented in hardware, software, or a combination of hardware. For hardware implementation, processing units used to execute these technologies at communication devices (for example, base stations, terminals, network entities, or chips) can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, Programmable logic device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the foregoing. The general-purpose processor may be a microprocessor, and optionally, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration achieve.

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 can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate 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 memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

The present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.

This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in 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 transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). 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 or a data center integrated with one or more available media. 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 (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.

It should be understood that the “embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application. The implementation process constitutes any limitation.

It should also be understood that in this application, "when", "if" and "if" all mean that the UE or the base station will make corresponding processing under certain objective circumstances, and it is not a time limit, and the UE is not required Or when the base station is implemented, there must be a judgment action, which does not mean that there are other restrictions.

A person of ordinary skill in the art can understand that the various digital numbers such as first and second involved in the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application, but also indicate a sequence.

The use of the singular element in this application is intended to mean "one or more", rather than "one and only one", unless otherwise specified. In this application, unless otherwise specified, "at least one" is intended to mean "one or more", and "multiple" is intended to mean "two or more".

In addition, the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.

The character "/" generally indicates that the associated objects are in an "or" relationship.

The term "at least one of" or "at least one of" herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, A, B and C exist at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.

It should be understood that in the embodiments 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 according to A does not mean determining B only according to A, and B can also be determined according to A and/or other information.

The corresponding relationships shown in the tables in this application can be configured or pre-defined. The value of the information in each table is only an example and can be configured to other values, which is not limited in this application. When configuring the correspondence between the information and the parameters, it is not necessarily required to configure all the correspondences indicated in the tables. For example, in the table in this application, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, and so on. The names of the parameters shown in the titles in the above tables may also be other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device. When the above tables are implemented, other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.

The pre-definition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or 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 be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they 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 of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The same or similar parts between the various embodiments in this application can be referred to each other. In each embodiment of this application, and each implementation method/implementation method/implementation method in each embodiment, if there is no special description and logical conflict, between different embodiments and each implementation manner in each embodiment/ The terms and/or descriptions between the implementation methods/implementation methods are consistent and can be mutually cited. The technical features in different embodiments and various implementation modes/implementation methods/implementation methods in each embodiment are based on their inherent The logical relationship can be combined to form a new embodiment, implementation, implementation method, or implementation method. The implementations of the application described above do not constitute a limitation on the protection scope of the application.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that the method includes:

The first terminal device generates a first demodulation reference signal DMRS, and sends the first DMRS, where the first DMRS is used to demodulate the first side uplink information in the first time domain resource;

Generating, by the first terminal device, a second DMRS and sending the second DMRS, where the second DMRS is used to demodulate the second side uplink information in the second time domain resource;

Wherein, the first DMRS and the second DMRS are located in the same time unit, and the first time domain resource and the second time domain resource do not overlap in time.
The method according to claim 1, wherein the first time domain resource is also used to carry uplink information.
The method according to claim 1 or 2, wherein the first side uplink information includes side uplink control information and first side uplink data information, and the second side uplink information Including the second side uplink data information;

The first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information .
The method according to claim 3, wherein the side link control information is used to schedule the transmission of the first side link data information and the transmission of the second side link data information.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The first terminal device sends first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The first terminal device sends second indication information, where the second indication information is used to indicate the location of the first DMRS and/or the location of the second DMRS.
A communication method, characterized in that the method includes:

The second terminal device receives a first demodulation reference signal DMRS, where the first DMRS is used to demodulate the first side uplink information in the first time domain resource;

Receiving, by the second terminal device, a second DMRS, where the second DMRS is used to demodulate second side uplink information in a second time domain resource;

Wherein, the first DMRS and the second DMRS are located in the same time unit, and the first time domain resource and the second time domain resource do not overlap in time.
The method according to claim 7, wherein the first time domain resource is also used to carry uplink information.
The method according to claim 7 or 8, wherein the first side uplink information includes side uplink control information and first side uplink data information, and the second side uplink information Including the second side uplink data information;

The first DMRS is used to demodulate the side uplink control information and/or the first side uplink data information, and the second DMRS is used to demodulate the second side uplink data information .
The method according to claim 9, wherein the side link control information is used to schedule the transmission of the first side link data information and the transmission of the second side link data information.
The method according to any one of claims 7 to 10, wherein the method further comprises:

The second terminal device receives first indication information, where the first indication information is used to indicate the first time domain resource and/or the second time domain resource.
The method according to any one of claims 7 to 11, wherein the method further comprises:

The second terminal device receives second indication information, where the second indication information is used to indicate the location of the first DMRS and/or the location of the second DMRS.
A device, characterized in that the device is used to execute the method according to any one of claims 1 to 6.
A device, characterized in that the device is used to execute the method according to any one of claims 7 to 12.
A device, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the device is executed The method according to any one of claims 1 to 6.
A device, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the device is executed The method of any one of claims 7-12.
A storage medium having a computer program or instruction stored thereon, wherein the computer program or instruction is executed to cause a computer to execute the method according to any one of claims 1 to 6.
A storage medium having a computer program or instruction stored thereon, wherein the computer program or instruction is executed to cause a computer to execute the method according to any one of claims 7 to 12.
A communication system, characterized by comprising: the device described in claim 13 and/or the device described in claim 14.
A communication system, characterized by comprising: the device described in claim 15 and/or the device described in claim 16.