WO2024255537A1 - Communication method, apparatus and system - Google Patents

Abstract

Provided in the present application are a communication method, apparatus and system. The communication method comprises: in the method, first indication information (or a second field in the first indication information) can indicate the type of a receiving device, or the first indication information indicates an identifier corresponding to a first sidelink signal; according to the type of the receiving device, which is indicated by the first indication information, and the type of a first device, or according to the identifier corresponding to the first sidelink signal, and an identifier of the first device, the first device determines whether to detect the first sidelink signal; if the first device determines that the type of the first device is different from the type of the receiving device, which is indicated by the first indication information, or that the identifier corresponding to the first sidelink signal is different from the identifier of the first device, the first device can not detect the first sidelink signal, thereby avoiding unnecessary detection that may be present in the case of coexistence of devices of different types, such that the power consumption of the receiving device can be reduced. Exemplarily, the method can be appliable to a sidelink communication system.

Description

Communication method, device and system

This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of China on June 16, 2023, with application number 202310725995.7 and invention name “A side link transmission method and device”, the entire contents of which are incorporated by reference in this application.

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 7, 2023, with application number 202310986948.8 and invention name “Communication Method, Device and System”, the entire contents of which are incorporated by reference in this application.

Technical Field

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

Background Art

In sidelink (SL) communication, there may be different types of user equipment (UE), such as reduced capability UE (RedCap UE) and regular UE with relatively strong capability. Regular UE may also be called normal UE, non-RedCap UE, etc. In current SL communication, both the source identity (ID) and the destination ID are carried in the second-order sidelink control information (SCI). The second-order SCI may also be called SCI2. The receiving UE needs to decode SCI2 before determining whether it needs to decode the data in the physical sidelink shared channel (PSSCH). When RedCap UE and Regular UE use the same physical sidelink control channel (PSCCH) format, even if the transmitting UE sends data to the Regular UE, the RedCap UE needs to decode SCI2, resulting in unnecessary PSSCH channel estimation and SCI2 decoding power consumption.

Summary of the invention

The present application provides a communication method, apparatus and system, which can reduce the power consumption of equipment.

In a first aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for the terminal device, which is not limited in the present application. For ease of description, the following description is given by taking the execution of the first device as an example.

The method includes: a first device receives first sideline control information, the first sideline control information is used to schedule a first sideline signal, the first sideline control information includes first indication information, the first indication information includes a first field and a second field, when the first field takes a first value, the second field is used to indicate the type of a receiving device corresponding to the first sideline signal, wherein the type of the receiving device includes a first type and a second type, and there is an overlapping part between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, wherein the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device; the first device determines whether to detect the first sideline signal according to the first indication information.

The first side signal may be one or more of a second-order SCI, data, a reference signal or feedback information.

The first device is a receiving device.

In the method, the first indication information (or the second field in the first indication information) can indicate the type of the receiving device. The first device determines whether to detect the first side signal based on the type of the receiving device indicated by the first indication information and the type of the first device. If the first device determines that the type of the first device is different from the type of the receiving device indicated by the first indication information, the first device may not detect the first side signal, thereby avoiding unnecessary detection that may exist when different types of devices coexist, and reducing the power consumption of the receiving device.

In some implementations, there is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, including: the first type of device is configured with a first time-frequency resource set, the second type of device is configured with a second time-frequency resource set, there is an overlap between the resources in the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set.

In other words, the first type of device is configured with a first time-frequency resource set, the second type of device is configured with a second time-frequency resource set, the resources in the first time-frequency resource set and the second time-frequency resource set overlap, and the first time-frequency resource set has The bandwidth is smaller than the bandwidth of the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, and some resources in the first time-frequency resource set can be used by the first type of device.

In some implementations, the receiving device corresponding to the first sidelink signal includes one or more devices, and the second field is used to indicate the type of the one or more devices.

In some implementations, when the value of the second field is a third value, the second field indicates that the one or more devices are devices of the first type, and when the value of the second field is a fourth value, the second field indicates that the one or more devices are devices of the second type.

The first device determines whether to detect the first sidewalk signal according to the first indication information, including:

When the first device is a device of the first type, if the value of the second field is the third value, the first device determines to detect the first side signal, and if the value of the second field is the fourth value, the first device determines not to detect the first side signal.

When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the first side signal, and if the value of the second field is the fourth value, the first device determines to detect the first side signal;

or,

When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type.

The first device determines whether to detect the first sidewalk signal according to the first indication information, including:

When the first device is a device of the first type, if the value of the second field is the third value or the fourth value, the first device determines to detect the first sideline signal,

When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the first side signal, and if the value of the second field is the fourth value, the first device determines to detect the first side signal;

or,

When the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device; when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device.

The first device determines whether to detect the first sidewalk signal according to the first indication information, including:

When the first device is a device of the first type, if the value of the second field is the third value, the first device determines to detect the first side signal, and if the value of the second field is the fourth value, the first device determines not to detect the first side signal.

When the first device is a device of the second type, if the value of the second field is the third value or the fourth value, the first device determines to detect the first sideline signal;

or,

When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that the one or more devices are all devices of the second type; when the value of the second field is the fifth value, the second field indicates that the one or more devices include devices of the first type and devices of the second type.

The first device determines whether to detect the first sidewalk signal according to the first indication information, including:

When the first device is a device of the first type, if the value of the second field is the third value or the fifth value, the first device determines to detect the first side signal; if the value of the second field is the fourth value, the first device determines not to detect the first side signal.

When the first device is the second type of device, if the value of the second field is the third value, the first device determines not to detect the first side signal; if the value of the second field is the fourth value or the fifth value, the first device determines to detect the first side signal.

In some implementations, when the first field takes a second value, the first device determines to detect the first sideline signal.

In this manner, when the first field takes the first value, the second field indicates the type of the receiving device, that is, the first device can receive the second value according to the first value. The first device determines whether to detect the first sideline signal according to the type of receiving device indicated by the second field and the type of the first device. If the first device determines that the type of the first device is different from the type of the receiving device indicated by the second field, the first device may not detect the first sideline signal, thereby avoiding unnecessary detection that may exist when different types of devices coexist, and reducing the power consumption of the receiving device. When the first field takes the second value, the second field does not indicate the type of the receiving device, that is, the first device cannot determine whether the first sideline signal is sent to the first device according to the second field. In order to avoid missed detection, the first device detects the first sideline signal.

The first device in this application is a terminal device, and may also be a component or device (such as a processor, chip, or chip system, etc.) applied to the terminal device, or a logic module or software that can realize all or part of the functions of the terminal device. The second device is a terminal device, and may also be a component or device (such as a processor, chip, or chip system, etc.) applied to the terminal device, or a logic module or software that can realize all or part of the functions of the terminal device.

In a second aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for the terminal device, which is not limited in this application. For ease of description, the following description is taken as an example of execution by a second device.

The method includes: the second device sends first sideline control information, the first sideline control information is used to schedule a first sideline signal, the first sideline control information includes first indication information, the first indication information includes a first field and a second field, when the first field takes a first value, the second field is used to indicate the type of receiving device corresponding to the first sideline signal, wherein the type of receiving device includes a first type and a second type, there is an overlapping part between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, and the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device; the second device sends the first sideline signal.

In some implementations, there is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, including: the first type of device is configured with a first time-frequency resource set, the second type of device is configured with a second time-frequency resource set, there is an overlap between the resources in the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set.

In other words, the first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, there is overlap in resources between the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, and some resources in the first time-frequency resource set can be used by the first type of device.

In some implementations, the receiving device corresponding to the first sidelink signal includes one or more devices, and the second field is used to indicate the type of the one or more devices.

In some implementations, when the value of the second field is a third value, the second field indicates that the one or more devices are all devices of the first type, and when the value of the second field is a fourth value, the second field indicates that the one or more devices are all devices of the second type; or,

When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type; or

When the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device, and when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device; or,

When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type. When the value of the second field is the fourth value, the second field indicates that the one or more devices are all devices of the second type. When the value of the second field is the fifth value, the second field indicates that the one or more devices include devices of the first type and devices of the second type.

In a third aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for a terminal device, which is not limited in this application. For ease of description, the following description is taken as an example of execution by a first device.

The method includes: a first device receives first sideline control information from a second device, the first sideline control information is used to schedule a first sideline signal, the first sideline control information includes first indication information, and the first indication information is used to indicate that the first sideline control whether the information includes identification information corresponding to the first side signal; when the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, the first device determines whether to detect the first side signal according to the identification information corresponding to the first side signal.

In the method, the first device determines whether the first side control information includes identification information based on the first indication information. When the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, the first device determines whether to detect the first side signal based on the identification information corresponding to the first side signal. If the identification information corresponding to the first side signal is the same as all or part of the fields of the identification information corresponding to the first device, the first device detects the first side signal. Otherwise, there is no need to detect the first side signal. This avoids the problem that the first device needs to always detect the first side signal, and can reduce the power consumption of the first device.

In some implementations, the first device and the second device are both devices of the first type, or the first device is a device of the first type and the second device is a device of the second type, or the first device is a device of the second type and the second device is a device of the first type, there is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, and the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device.

In some implementations, there is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, including: the first type of device is configured with a first time-frequency resource set, the second type of device is configured with a second time-frequency resource set, there is an overlap between the resources in the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set.

In other words, the first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, there is overlap in resources between the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, and some resources in the first time-frequency resource set can be used by the first type of device.

In some implementations, the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, and the number of bits of the identification information corresponding to the first side signal is determined based on the bandwidth size of the time-frequency resource set of the first type of device and the bandwidth size of the time-frequency resource set of the second type of device.

In some implementations, the number of bits B of the identification information corresponding to the first sideline signal satisfies the following relationship:

or,

Among them, M is the number of frequency domain units included in the time-frequency resource set of the second type of device, N is the number of frequency domain units included in the time-frequency resource set of the first type of device, N is a positive integer, and M is a positive integer greater than N.

In some implementations, the first device determines whether to detect the first side signal based on identification information corresponding to the first side signal, including: when the identification information corresponding to the first side signal is identical to all or part of the fields of identification information corresponding to the first device, the first device detects the first side signal.

In some implementations, the identification information corresponding to the first side signal includes at least one of the following: all or part of the bits of the source identification corresponding to the first side signal, all or part of the bits of the destination identification corresponding to the first side signal, all or part of the bits of the sending device identification corresponding to the first side signal, or all or part of the bits of the receiving device identification corresponding to the first side signal.

In a fourth aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for a terminal device, which is not limited in this application. For ease of description, the following description is taken as an example of execution by a second device.

The method includes: the second device sends first sidewalk control information, the first sidewalk control information is used to schedule a first sidewalk signal, the first sidewalk control information includes first indication information, the first indication information indicates whether the first sidewalk control information includes identification information corresponding to the first sidewalk signal; the second device sends the first sidewalk signal to the first device.

In some implementations, the first device and the second device are both devices of the first type, or the first device is a device of the first type and the second device is a device of the second type, or the first device is a device of the second type and the second device is a device of the first type, there is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, and the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device.

In some implementations, the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device are stored in In the overlapping part, it includes: the first type of device is configured with a first time-frequency resource set, the second type of device is configured with a second time-frequency resource set, there is overlap in resources between the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, the first type of device and the second type of device are configured with the first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set.

In other words, the first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, there is overlap in resources between the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set; or, the first type of device and the second type of device are configured with a first time-frequency resource set, and some resources in the first time-frequency resource set can be used by the first type of device.

In some implementations, the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, and the number of bits of the identification information corresponding to the first side signal is determined based on the bandwidth size of the time-frequency resource set of the first type of device and the bandwidth size of the time-frequency resource set of the second type of device.

In some implementations, the number of bits B of the identification information corresponding to the first sideline signal satisfies the following relationship:

or,

Among them, M is the number of frequency domain units included in the time-frequency resource set of the second type of device, N is the number of frequency domain units included in the time-frequency resource set of the first type of device, N is a positive integer, and M is a positive integer greater than N.

In some implementations, the identification information corresponding to the first side signal includes at least one of the following: all or part of the bits of the source identification corresponding to the first side signal, all or part of the bits of the destination identification corresponding to the first side signal, all or part of the bits of the sending device identification corresponding to the first side signal, or all or part of the bits of the receiving device identification corresponding to the first side signal.

In the first to fourth aspects, the following implementations are also included:

In some implementations, the first sidelink control information is first order sidelink control information SCI.

In some implementations, the first sidelink control information is carried on a physical sidelink control channel PSCCH.

In some implementations, the first sidelink signal is carried on a physical sidelink shared channel PSSCH, and the PSSCH is associated with a PSCCH carrying the first sidelink control information.

In some implementations, the number of bits of control information carried by the PSCCH sent by the first type of device is the same as the number of bits of control information carried by the PSCCH sent by the second type of device.

In some implementations, the first sidelink signal is one or more of a second-order SCI, data, a reference signal, or feedback information.

In a fifth aspect, an embodiment of the present application provides a communication device, comprising a transceiver unit and a processing unit, wherein the communication device is used to execute the method of the first aspect, or the third aspect, or any possible method in the first aspect, or any possible method in the third aspect, or all possible methods in the first aspect, or all possible methods in the third aspect.

In a sixth aspect, an embodiment of the present application provides a communication device, comprising a transceiver unit and a processing unit, wherein the communication device is used to execute the method of the second aspect, or the fourth aspect, or any possible method in the second aspect, or any possible method in the fourth aspect, or all possible methods in the second aspect, or all possible methods in the fourth aspect.

In the seventh aspect, an embodiment of the present application provides a communication device, including an interface circuit and a processor, wherein the interface circuit is used to implement the function of the transceiver module in the fifth aspect, and the processor is used to implement the function of the processing module in the fifth aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, comprising an interface circuit and a processor, wherein the interface circuit is used to implement the function of the transceiver module in the sixth aspect, and the processor is used to implement the function of the processing module in the sixth aspect.

In the ninth aspect, an embodiment of the present application provides a computer-readable medium storing a program code for execution on a terminal device, the program code comprising instructions for executing the method of the first aspect, or the third aspect, or any possible manner in the first aspect, or any possible manner in the third aspect, or all possible manners in the first aspect, or all possible manners in the third aspect.

In the tenth aspect, an embodiment of the present application provides a computer-readable medium storing a program code for execution by a network device, the program code comprising instructions for executing the method of the second aspect, or the fourth aspect, or any possible manner in the second aspect, or any possible manner in the fourth aspect, or all possible manners in the second aspect, or all possible manners in the fourth aspect.

In the eleventh aspect, a computer program product storing computer-readable instructions is provided, which, when the computer-readable instructions are executed on a computer, causes the computer to execute the method of the first aspect, or the third aspect, or any possible manner in the first aspect, or any possible manner in the third aspect, or all possible manners in the first aspect, or all possible manners in the third aspect.

In the twelfth aspect, a computer program product storing computer-readable instructions is provided, which, when the computer-readable instructions are executed on a computer, enables the computer to execute the method of the above-mentioned second aspect, or the fourth aspect, or any possible manner in the second aspect, or any possible manner in the fourth aspect, or all possible manners in the second aspect, or all possible manners in the fourth aspect.

In the thirteenth aspect, a communication system is provided, which includes a method for implementing the above-mentioned first aspect, or the third aspect, or any possible manner in the first aspect, or any possible manner in the third aspect, or all possible manners in the first aspect, or all possible manners in the third aspect, the second aspect, or the fourth aspect, or any possible manner in the second aspect, or any possible manner in the fourth aspect, or all possible manners in the second aspect, or all possible manners in the fourth aspect, and a device with various possible designed functions.

In a fourteenth aspect, a processor is provided, which is coupled to a memory and is used to execute the method of the above-mentioned first aspect, or the third aspect, or any possible manner in the first aspect, or any possible manner in the third aspect, or all possible manners in the first aspect, or all possible manners in the third aspect.

In the fifteenth aspect, a processor is provided, which is coupled to a memory and is used to execute the method of the second aspect, or the fourth aspect, or any possible manner in the second aspect, or any possible manner in the fourth aspect, or all possible manners in the second aspect, or all possible manners in the fourth aspect.

In a sixteenth aspect, a chip system is provided, the chip system includes a processor and may also include a memory for executing a computer program or instruction stored in the memory, so that the chip system implements the method in any of the first aspect, the second aspect, the third aspect, or the fourth aspect, and any possible implementation of any aspect. The chip system may be composed of a chip, or may include a chip and other discrete devices.

In the seventeenth aspect, a communication method is provided, the method comprising: a second device sends first side control information to a first device, the first side control information is used to schedule a first side signal, the first side control information includes first indication information, the first indication information includes a first field and a second field, when the first field takes a first value, the second field is used to indicate the type of a receiving device corresponding to the first side signal, wherein the type of the receiving device includes a first type and a second type, and there is an overlapping part between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, wherein the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device; the second device sends the first side signal to the first device; the first device determines whether to detect the first side signal according to the first indication information.

In the eighteenth aspect, a communication method is provided, the method comprising: a second device sends first sidewalk control information to a first device, the first sidewalk control information is used to schedule a first sidewalk signal, the first sidewalk control information includes first indication information, the first indication information indicates whether the first sidewalk control information includes identification information corresponding to the first sidewalk signal; the second device sends the first sidewalk signal to the first device; when the first indication information indicates that the first sidewalk control information includes identification information corresponding to the first sidewalk signal, the first device determines whether to detect the first sidewalk signal according to the identification information corresponding to the first sidewalk signal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 shows a system architecture applicable to an embodiment of the present application.

FIG2( a ) shows a schematic diagram of frequency domain resources.

FIG2( b ) shows a schematic diagram of yet another frequency domain resource.

FIG3 shows a schematic diagram of a communication method.

FIG4 shows a schematic block diagram of a communication device.

FIG5 shows a schematic block diagram of yet another communication device.

FIG6 shows a schematic block diagram of yet another communication device.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

FIG1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in FIG1 , the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include up to The system may include at least one wireless access network device (such as 110a and 110b in FIG. 1 ), and may also include at least one terminal (such as 120a-120j in FIG. 1 ). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device may be integrated on the same physical device, or the functions of some core network devices and some wireless access network devices may be integrated on one physical device. Terminals and wireless access network devices may be connected to each other by wire or wireless means. FIG. 1 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .

The wireless access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), the next generation base station (next generation NodeB, gNB) in the fifth generation (5th generation, 5G) mobile communication system, the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, a base station in a future mobile communication system or an access node in a WiFi system, etc.; it can also be a module or unit that completes part of the functions of a base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). Here, the CU completes the functions of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned various protocol layers, reference can be made to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The wireless access network device can be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For the convenience of description, the following description takes the base station as an example of the wireless access network device.

The terminal device may be a device that provides voice/data to the user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device may include user equipment, sometimes also referred to as a terminal, access station, UE station, remote station, wireless communication device, or user device, etc.

For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a whole vehicle, a wireless communication module in a whole vehicle, a telematics box (T-Box), a road side unit (RSU), a wireless terminal in unmanned driving, a wireless terminal device in the Internet of Things (IoT), a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc., and the embodiments of the present application are not limited to this.

As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also can achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include devices that are fully functional, large in size, and can achieve full or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for measuring vital signs.

The terminal device can also be a V2X device, such as a smart car (or intelligent car), a digital car, an unmanned car (or driverless car or pilotless car or automobile), a self-driving car (or autonomous car), a pure electric vehicle (or battery EV), a hybrid electric vehicle (HEV), a range extended EV (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (new energy vehicle), or a roadside unit (RSU). The terminal device can also be a device in device to device (D2D) communication, such as an electric meter or a water meter.

In addition, in the embodiments of the present application, the terminal device can also be a terminal device in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.

The various terminal devices introduced above, if located on a vehicle (e.g., placed in a vehicle or installed in a vehicle), can all be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU). The terminal device of the present application can also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.

Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

The roles of the base station and the terminal can be relative. For example, the helicopter or drone 120i in FIG. 1 can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in FIG. 1 can be referred to as communication devices with base station functions, and 120a-120j in FIG. 1 can be referred to as communication devices with terminal functions.

Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

The technical solution provided in the embodiment of the present application can be applied to wireless communication between communication devices. Wireless communication between communication devices may include: wireless communication between network devices and terminals, wireless communication between network devices and network devices, and wireless communication between terminal devices and terminal devices. In the embodiment of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission" or "transmission".

It can be understood that, in the embodiments of the present application, the physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) and the physical sidelink control channel (physical sidelink control channel, PSCCH) are merely examples of data channels and control channels, respectively. In different systems and different scenarios, the data channels and control channels may have different names, and the embodiments of the present application do not limit this.

In order to facilitate understanding of the solutions of the embodiments of the present application, the relevant concepts are explained.

The communication devices in the present application can be divided into a first type of device and a second type of device. The first type of device is, for example, a low-complexity UE (reduced capability UE, RedCap UE), and the second type of device can be a Regular UE (or normal UE, non-RedCap UE, etc.), such as an enhanced mobile broadband (enhanced mobile broadbande, eMBB) UE.

The first type of device and the second type of device have different characteristics, which include one or more of the following:

Bandwidth, number of supported or configured resources, number of transmit antenna ports and/or number of receive antenna ports, number of RF channels, number of hybrid automatic repeat request (HARQ) processes, supported peak rate, application scenarios, latency requirements, processing capabilities, protocol version, duplex mode, services, etc. The first feature is described in detail below.

Bandwidth, or channel bandwidth, or the maximum channel bandwidth supported or configured by the terminal device, the bandwidth of the first type of device is different from that of the second type of device, for example: the bandwidth of the first type of device may be 20MHz, 10MHz, or 5MHz, and the bandwidth of the second type of device may be 100MHz. It is understood that with the development of communication technology, the maximum bandwidth supported by the first type of device may no longer be 20MHz, 10MHz, or 5MHz, but may evolve into a wider or narrower bandwidth such as 3MHz, 25MHz, or 50MHz.

The number of resources supported or configured may be resource blocks (RB), resource elements (RE), subcarriers, RB groups, resource element group bundles (REG bundles), control channel elements, subframes, radio frames, time slots, mini time slots and/or symbol numbers. The number of resources supported or configured by the first type of device and the second type of device is different. For example, the number of resources supported by the first type of device is 48 RBs, and the number of resources supported by the second type of device is 96 RBs.

The number of transmitting antenna ports and/or the number of receiving antenna ports, that is, the number of transmitting antenna ports and/or the number of receiving antenna ports of the first type of device is different from that of the second type of device. For example, the number of transmitting antenna ports of the first type of device may be 1, and the number of receiving antenna ports may be 2.

The number of transmit antenna ports of the second type of device may be 2, and the number of receive antenna ports may be 4.

The number of RF channels, that is, the number of RF channels of the first type of device is different from that of the second type of device. For example, the number of RF channels of the first type of device may be 1, and the number of RF channels of the second type of device may be 2.

The number of HARQ processes, that is, the number of HARQ processes supported by the first type of device is different from that of the second type of device, for example: The number of HARQ processes of the device may be 8, and the number of HARQ processes of the second type of device may be 16.

The supported peak rates, that is, the maximum peak rates of the first type of device and the second type of device are different. For example, the maximum peak rate supported by the first type of device may be 100 Mbps, and the peak rate supported by the second type of device may be 200 Mbps.

Application scenarios, that is, the first type of devices and the second type of devices serve different application scenarios. For example, the first type of devices are used in industrial wireless sensors, video surveillance, wearable devices, etc., and the second type of devices are used in mobile communications, video surfing, etc.

Delay requirements, that is, the first type of device and the second type of device have different requirements for transmission delay. For example, the delay requirement of the first type of device may be 500 milliseconds, and the delay requirement of the second type of device may be 100 milliseconds.

Processing capability, that is, the first type of device and the second type of device have different processing timing and processing speed for channels or data under different subcarrier space (SCS) conditions. For example, the first type of device does not support complex operations, which may include artificial intelligence (AI) and VR rendering, while the second type of device supports complex operations. In other words, the first type of device has lower processing capability than the second type of device.

Protocol version, that is, the first type of device and the second type of device are terminal devices of different protocol versions. For example, the first type of device supports Release 17 and later protocol versions, and the second type of device supports earlier protocol versions than Release 17, such as Release 15 or Release 16.

Duplex mode, the duplex mode includes half-duplex and full-duplex, for example: the first type of equipment works in half-duplex mode, and the second type of equipment works in full-duplex mode.

Services include but are not limited to Internet of Things applications, such as video surveillance, mobile broadband (MBB), etc. For example, the service supported by the first type of device is video surveillance, and the service supported by the second type of device is mobile broadband MBB. This embodiment of the application does not limit this.

It should be understood that other types or future new types of terminal devices that also support the technical solution of the present application are also within the protection scope of the present application.

The first device in this application may be an example of a first type of device or a second type of device, and the second device may be an example of a first type of device or a second type of device. The first device in this application is a terminal device, or a component applied to the terminal device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device. The second device in this application is a terminal device, or a component applied to the terminal device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device.

When the terminal device is used as a receiving device, the type of the above device may also be referred to as the type of receiving device. Alternatively, the first type of device may also be referred to as a first type receiving device or a first type receiving device, etc. The name of the second type receiving device is similar to this and will not be repeated.

Different from the downlink (DL) and uplink (UL) communications in cellular networks, sidelink (SL) communications can support direct communication between user equipment (UE), that is, user data is transmitted directly between UEs, avoiding the need for user data to be transferred through the network in cellular communications, thereby reducing transmission latency.

In SL communication, there may be different types of UEs as mentioned above. For example, mobile phones and other terminal devices have relatively strong capabilities, while wearable devices such as watches and headphones are sensitive to cost and power consumption. These terminal devices have relatively weak capabilities, namely RedCap UE. UEs with relatively strong capabilities can be called Regular UEs, normal UEs, or non-RedCap UEs. The following description takes Regular UE as an example. The maximum bandwidth supported by RedCap UE is generally smaller than the maximum bandwidth supported by Regular UE.

In SL communication, SL control information (sidelink control information, SCI) can be divided into first-order SCI (SCI1) and second-order SCI (SCI2). The sending UE can carry "frequency resource allocation" indication information in SCI1. The number of bits of this field is related to the resource pool bandwidth size.

When the bandwidth of the RedCap UE resource pool is different from that of the Regular UE resource pool but there is overlap, if the RedCap UE and the Regular UE determine the number of bits of this field according to the bandwidth of their respective resource pools, the physical sidelink control channel (PSCCH) formats of the RedCap UE and the Regular UE will be different, which may cause different types of UEs to be unable to correctly decode each other's PSCCH, or different types of UEs need to blindly detect different PSCCH formats. In order to avoid the above problems, the RedCap UE and the Regular UE can use the same number of SCI1 bits, for example, the RedCap UE determines the number of bits of the "frequency resource allocation" indication information according to the bandwidth of the Regular UE resource pool.

For example, the structure of the resource pool can be divided into a structure based on continuous resource blocks (RBs) and a structure based on interlaced RBs. As shown in (a) of FIG2 , in the structure based on continuous RBs, the resource pool includes one or more subchannels, each of which includes one or more continuous physical resource blocks (PRBs); as shown in (b) of FIG2 , in the structure based on interlaced RBs, the resource pool includes one or more RB sets (RB sets), each of which includes one or more subchannels, each of which includes one or more continuous physical resource blocks (PRBs). A subchannel is composed of one or more interlaces, and an interlace includes multiple non-contiguous PRBs.

The sending UE carries the "frequency resource allocation" indication information in SCI1, and the number of bits of this field is related to the size of the resource pool bandwidth.

In the time-frequency resource structure based on continuous RBs, the frequency resource indicator value (FRIV) can be used to indicate the starting subchannel index and the number of subchannels of one or more time slot reserved resources. The number of bits and value of the FRIV field are determined according to the following rules:

1) When the resource pool is (pre)configured to reserve up to 2 resources, The number of bits in this field is

2) When the resource pool is (pre)configured to reserve up to 3 resources, The number of bits in this field is

Where L _subCH is the number of consecutive subchannels corresponding to each reserved resource, is the starting subchannel index of the second reserved resource, is the starting subchannel index of the third reserved resource, is the number of sub-channels included in the resource pool. To round up, the result is the smallest integer greater than or equal to Y.

In the structure based on staggered RB, FRIV can be used to indicate the starting RB set index and the number of RB sets of one or more time slot reserved resources. The specific indication method can refer to the above sub-channel indication method. Replaced with the number of RB sets included in the resource pool.

It can be seen that no matter which resource pool structure is used, the number of bits of SCI1 is related to the size of the resource pool bandwidth.

In addition, in SL communication, the transmitting UE sends data through the physical sidelink shared channel (PSSCH) and carries control information for decoding the data in the PSSCH in the SCI. SCI can be sent through PSCCH, or SCI can be divided into first-order SCI (SCI1) and second-order SCI (SCI2), where SCI1 is sent through PSCCH and SCI2 is sent through PSSCH. SCI1 carries information related to resource indication, and SCI2 carries source identification (identity, ID) and destination ID. The receiving UE first detects PSCCH, determines the resource location of PSSCH according to the indication information in SCI1, and then decodes (also called detects) SCI2 in PSSCH, and determines whether the data in PSSCH needs to be decoded according to the ID information indicated in SCI2. When RedCap UE and Regular UE use the same PSCCH format, RedCap UE needs to decode SCI2 even if the transmitting UE sends data to Regular UE; or Regular UE needs to decode SCI2 even if the transmitting UE sends data to RedCap UE. This results in unnecessary power consumption for PSSCH channel estimation and SCI2 decoding.

The following description takes the division of SCI into SCI1 and SCI2 as an example.

It should be pointed out that in the embodiments of the present application, (pre) configuration can be understood as configuration or pre-configuration. Among them, configuration refers to configuration by network equipment, such as network equipment configuring resource pool information. Pre-configuration means that the communication system is pre-defined (such as the communication system pre-defines resource pool information), or the communication protocol is pre-defined (such as the communication protocol pre-defines resource pool information), or the terminal device is pre-configured when leaving the factory (such as the terminal device pre-configures resource pool information when leaving the factory), or configured by high-level signaling of the terminal device (such as radio resource control (RRC) signaling).

In view of this, the present application proposes a communication method, which indicates the type of the receiving end (or receiving device) so that the receiving end can determine whether to decode, thereby avoiding unnecessary PSSCH channel estimation and SCI2 decoding, thereby reducing the power consumption of the receiving end.

The method may include the following steps:

310. The second device sends first side control information to the first device, and correspondingly, the first device receives the first side control information.

The first sideline control information is used to schedule the first sideline signal. The scheduling of the first sideline signal can be understood as scheduling the time-frequency resources of the first sideline signal, or indicating the time-frequency resources of the first sideline signal, or indicating information required for detecting or decoding the first sideline signal (such as coding modulation mode, reference signal type, etc.).

In a possible implementation, the first sidelink control information is first-order sidelink control information SCI1. The first sidelink control information is carried on a physical sidelink control channel PSCCH.

Exemplarily, the PSCCH is associated with PSSCH, and the PSSCH carries a first side signal, for example, the first side signal is SCI2 and/or data. The so-called PSCCH is associated with PSSCH, which can be understood as PSCCH (or control information carried by PSCCH) carrying information for receiving, detecting or decoding PSSCH (or signal carried by PSSCH), such as time-frequency resource information, coding modulation method, etc. In other words, PSCCH schedules the PSSCH. Optionally, the number of bits of control information carried by PSCCH sent by the first type of device is the same as the number of bits of control information carried by PSCCH sent by the second type of device.

In the following description, indication information A is taken as an example of the first indication information, and signal S is taken as an example of the first side signal.

The first sideline control information includes indication information A.

The indication information A can have the following two indication modes:

Mode 1: The indication information A indicates the type of receiving device corresponding to the signal S.

The type of the receiving device corresponding to the signal S is the first type or the second type.

Specifically, the first type of device can refer to the description of the first type of device above, and the second type of device can refer to the description of the second type of device above. For example, the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device. No further details are given here.

There is an overlap between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, wherein the time-frequency resource set of the device (or the time-frequency resource set corresponding to the device, the time-frequency resource set associated with the device, the time-frequency resource set of the device working, etc.) can be understood as the time-frequency resource set used by the device to send and/or receive information, for example, it can be an SL resource pool, RB set, partial bandwidth (bandwidth part, BWP), or carrier, etc.

For example, a first type of device is configured with a first time-frequency resource set (it can also be understood that the (pre) configuration information of the first type of device includes information about the first time-frequency resource set), and a second type of device is configured with a second time-frequency resource set (it can also be understood that the (pre) configuration information of the second type of device includes information about the second time-frequency resource set). There is overlap in resources between the first time-frequency resource set and the second time-frequency resource set, and the bandwidth of the first time-frequency resource set is smaller than the bandwidth of the second time-frequency resource set. Among them, being configured can also be understood as being (pre) configured. For example, a first type of device sends and/or receives information on time-frequency resource set A (for example, resource pool A), and a second type of device sends and/or receives information on time-frequency resource set B (for example, resource pool B).

There is an overlap between time-frequency resource set A and time-frequency resource set B, which can be: the time domain resources of time-frequency resource set A overlap with the time domain resources of time-frequency resource set B, or the frequency domain resources of time-frequency resource set A overlap with the frequency domain resources of time-frequency resource set B, or the time-frequency resource set A overlaps with the time-frequency resource set B in both the time domain and the frequency domain.

In another example, the first type of device and the second type of device are configured with a first time-frequency resource set (it can also be understood that the (pre) configuration information of the first type of device and the second type of device includes information of the first time-frequency resource set), and some resources in the first time-frequency resource set can be used by the first type of device. That is, the time-frequency resource set corresponding to the first type of device is a subset of the time-frequency resource set corresponding to the second type of device. For example, the first time-frequency resource set is resource pool C, and resource pool C includes RB set0, RB set1, RB set2, and RB set3, a total of 4 RB sets. The first type of device can send and/or receive information on RB set0, and the first type of device can send and/or receive information on RB set0, RB set1, RB set2, and RB set3.

It should be understood that the description of the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device here is also applicable to the following, such as mode 2. It will not be repeated below.

The receiving device corresponding to the signal S can be understood as the destination end of the signal S, or the destination device of the signal S. The first device may be the receiving device corresponding to the signal S, or may not be.

The signal S comes from the second device. The signal S may be a second-order SCI, data, a reference signal, or feedback information, etc., wherein the reference signal may be a channel state information reference signal (CSI-RS), a positioning reference signal (PRS), a demodulation reference signal (DMRS), etc., and the feedback information may be HARQ feedback, channel state information (CSI) feedback, etc.

In a possible implementation, the signal S is carried on a PSSCH. In other words, the second device sends a PSSCH including the signal S to the first device.

Optionally, the indication information A is carried (or referred to as including, bearing, etc.) in the control information associated with the signal S (such as SCI1). The control information associated with the signal S can be understood as the control information scheduling the signal S or the data channel carrying S, or the control information indicating the time-frequency resources of the signal S, or the control information includes information indicating the time-frequency resources corresponding to the signal S, or the control information includes information used to detect or decode the signal S.

The control information associated with the signal S may be SCI1, that is, the indication information A is carried in SCI1.

The control information is carried in the control channel. In a possible implementation, SCI1 is carried in the PSCCH.

That is, SCI1 is carried in PSCCH#A, PSCCH#A is associated with PSSCH#A, and signal S is carried in the PSSCH#A.

The receiving device corresponding to the signal S may include one or more devices, and the indication information A may be used to indicate the type of the one or more devices.

The indication information A may indicate the type of one or more devices through one field, or may indicate the type of one or more devices through multiple fields. The following is divided into Example 1 and Example 2 for explanation.

Example 1: indication information A includes a first field, where the first field is used to indicate the type of one or more devices.

When the first field value is value A, the indication information A indicates that one or more devices are devices of the first type; When the value is B, the indication information A indicates that the one or more devices are devices of the second type; or,

When the first field value is value A, the indication information A indicates that the one or more devices are devices of the first type; when the first field value is value B, the indication information A indicates that at least one of the one or more devices is a device of the second type; or

When the first field value is value A, the indication information A indicates that at least one of the one or more devices belongs to the first type of device; when the first field value is value B, the indication information A indicates that the one or more devices all belong to the second type of device; or,

When the value of the first field is A, the indication information A indicates that one or more devices are devices of the first type; when the value of the first field is B, the indication information A indicates that one or more devices are devices of the second type; when the value of the first field is C, the indication information A indicates that one or more devices include devices of the first type and devices of the second type.

The following describes the indication method in detail by taking UE as the communication subject as an example. For example, the first device is called a receiving UE, and the second device is a sending UE.

Case 1: The UEs participating in the communication include first type devices and/or second type devices, and the sending UE indicates the type of the receiving UE with 1 bit in SCI1, that is, the first field occupies 1 bit, for example, the first field occupies 1 reserved bit in SCI1.

The correspondence between the value of the bit and the meaning represented by the value can be predefined or preconfigured, such as stored in the first device and the second device in the form of a table. The correspondence can also be configured, such as the first device sends to the second device, or the second device sends to the first device.

For example, in unicast communication, a sending UE and a receiving UE communicate one-to-one.

When the receiving UE is a Regular UE (i.e., a device of the second type), the transmitting UE may indicate "0" in SCI1, and when the receiving UE is a RedCap UE (i.e., a device of the first type), the transmitting UE may indicate "1" in SCI1. Alternatively, when the receiving UE is a Regular UE, the transmitting UE may indicate "1" in SCI1, and when the receiving UE is a RedCap UE, the transmitting UE may indicate "0" in SCI1.

As another example, in multicast or broadcast communication, a sending UE and a receiving UE perform one-to-many communication.

In one possible implementation, "0" indicates that all receiving UEs are Regular UEs, and "1" indicates that all receiving UEs are RedCap UEs.

In another possible implementation, "0" indicates that all receiving UEs are Regular UEs, and "1" indicates that at least one receiving UE is a RedCap UE.

In another possible implementation, "0" indicates that at least one receiving UE is a Regular UE, and "1" indicates that all receiving UEs are RedCap UEs.

In another possible implementation, "0" indicates that at least one receiving UE is a Regular UE, and "1" indicates that at least one UE is a RedCap UE.

If the target receiving UEs of the multicast or broadcast service include both Regular UEs and RedCap UEs, the transmitting UE can send two PSSCHs, indicating "0" and "1" in the corresponding SCI1 respectively. "0" indicates that the receiving UE is a Regular UE, and "1" indicates that the receiving UE is a RedCap UE, or "0" indicates that the receiving UE is a RedCap UE, and "1" indicates that the receiving UE is a Regular UE.

Case 2: The UEs participating in the communication include first type devices and/or second type devices, and the sending UE indicates the type of the receiving UE with 2 bits in SCI1, that is, the first field occupies 2 bits, for example, the first field occupies 2 reserved bits in SCI1.

For example, in a unicast, multicast or broadcast scenario, "00" means that all receiving UEs are Regular UEs, "01" means that all receiving UEs are RedCap UEs, and "10" means that there are both Regular UEs and RedCap UEs among the receiving UEs.

Example 2: Indication information A includes a first field and a second field.

The first field is used to indicate whether the device sending the first side control information supports the function of "indicating device type (or indicating receiving device type)", or the first field is used to indicate whether the device sending the first side control information indicates the type of receiving device.

For example, when the first field takes a first value, it indicates that the device supports the function of "indicating device type". When the first field takes a second value, it indicates that the device does not support the function of "indicating device type".

In other words, the first field indicates whether the second field is used to indicate the type of the receiving device. For example, when the first field takes the first value, the second field is used to indicate the type of the receiving device; when the first field takes the second value, the second field is not used to indicate the type of the receiving device, or the second field is invalid, or the second field has no special meaning.

In a possible implementation, when the value of the first field is the first value, the second field is used to indicate the type of one or more devices.

It should be understood that the values of value A, value B, first value, second value, third value, fourth value, fifth value, etc. in the present application may be predefined or configured. For example, the corresponding field occupies 1 bit, and the value corresponding to the field may be 0 or 1, and the corresponding field occupies 2 bits, and the value corresponding to the field may be 00, 01, 10, 11. Other numerical values that can distinguish the meaning of the field indication can also be applied to the present application and should be within the protection scope of the present application.

The following description is made by taking the example that the first field and the second field each occupy 1 bit.

For example, the transmitting UE indicates the type of the receiving UE using 2 reserved bits in SCI1.

That is, the indication information A occupies 2 bits, wherein the 2 bits include a first bit and a second bit, the first bit is used to indicate whether the second bit is used to indicate the type of the receiving device, and the second bit can be used to indicate the type of the receiving device.

For example, the first bit value is 0, indicating that the second bit is not used to indicate the type of the receiving device, and the first bit value is 1, indicating that the second bit is used to indicate the type of the receiving device. The second bit value is 0, indicating that the type of the receiving device is the first type, and the second bit value is 1, indicating that the type of the receiving device is the second type.

For example, if the sending UE indicates "00", the second bit has no meaning of indicating the type of the receiving UE.

When the sending UE indicates "10" or "11", the second bit contains the meaning of indicating the type of the receiving UE. For example, the second bit is 0, indicating that the type of the receiving UE is Regular UE, and the second bit is 1, indicating that the type of the receiving UE is RedCap UE.

In unicast communication, a sending UE and a receiving UE perform one-to-one communication, and the sending UE may indicate the type of the receiving UE to the receiving UE.

Optionally, before sending the indication information A, the sending UE may also indicate to the target receiving UE whether the sending UE supports "indicating the type of receiving device", or indicate to the target receiving UE whether the sending UE carries the indication information for indicating the type of receiving device in the first side control information (e.g., SCI1), or indicate to the target receiving UE the protocol version supported by the sending UE (the receiving UE may determine whether the UE of the protocol version supports "indicating the type of receiving device" according to the protocol version). The target receiving UE may be understood as the target receiving UE of the signal S, that is, the signal S is sent to the target receiving UE.

In a possible implementation, when the sending UE and the target receiving UE establish a unicast connection, the sending UE may indicate to the target receiving UE whether the sending UE supports "indicating the type of the receiving device" (for example, carried in the capability information); or, when the sending UE supports "indicating the type of the receiving device", the sending UE may indicate to the target receiving UE that the sending UE supports "indicating the type of the receiving device" (for example, carried in the capability information). If the sending UE does not support "indicating the type of the receiving device", the sending UE sets the first field to the second value (for example, the second value is "0"); if the sending UE supports "indicating the type of the receiving device", the sending UE sets the first field to the first value (for example, the first value is "1").

For example, "10" means that the receiving UE is a Regular UE, and "11" means that the receiving UE is a RedCap UE.

In a groupcast or broadcast communication, a sending UE and a receiving UE perform one-to-many communication, and the sending UE may indicate the type of the one or more receiving UEs.

In a possible implementation, when the sending UE and the target receiving UE are establishing a communication group or discovering group devices, the sending UE may indicate to the target receiving UE whether the sending UE supports "indicating the type of the receiving device" (for example, carried in a discovery message); or, when the sending UE supports "indicating the type of the receiving device", the sending UE may indicate to the target receiving UE that the sending UE supports "indicating the type of the receiving device" (for example, carried in capability information). If the sending UE does not support "indicating the type of the receiving device", the sending UE sets the first field to the second value (for example, the second value is "0"); if the sending UE supports "indicating the type of the receiving device", the sending UE sets the first field to the first value (for example, the first value is "1").

The second field indicates the type of receiving device in the following manner:

When the value of the second field is the third value, the second field indicates that the one or more devices are devices of the first type; when the value of the second field is the fourth value, the second field indicates that the one or more devices are devices of the second type;

or,

When the value of the second field is the third value, the second field indicates that the one or more devices are devices of the first type; when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type;

or,

When the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device; when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device.

Specifically, the second field indication method is described below with examples.

In one possible implementation, "10" indicates that all receiving UEs are Regular UEs and "11" indicates that all receiving UEs are RedCap UEs, or, "11" indicates that all receiving UEs are Regular UEs and "10" indicates that all receiving UEs are RedCap UEs.

If the target receiving UEs of the multicast service include both Regular UEs and RedCap UEs, the transmitting UE can send two PSSCHs, indicating "10" and "11" in the corresponding SCI1. For example, "10" indicates that the receiving UE is a Regular UE, and "11" indicates that the receiving UE is a RedCap UE.

In another possible implementation, "10" indicates that all receiving UEs are Regular UEs, and "11" indicates that at least one receiving UE is a RedCap UE, or "11" indicates that all receiving UEs are Regular UEs, and "10" indicates that at least one receiving UE is a RedCap UE.

In another possible implementation, "10" indicates that at least one receiving UE is a Regular UE, and "11" indicates that all receiving UEs are RedCap UEs, or, "11" indicates that at least one receiving UE is a Regular UE, and "10" indicates that all receiving UEs are RedCap UEs.

Optionally, the sending UE may also use 3 reserved bits in SCI1 to indicate the type of the receiving UE. For example, the first field occupies 1 bit and the second field occupies 2 bits. The second field indicates the type of the receiving device in the following manner:

When the second field value is the third value, the second field indicates that one or more devices are devices of the first type; when the second field value is the fourth value, the second field indicates that one or more devices are devices of the second type; when the second field value is the fifth value, the second field indicates that one or more devices include devices of the first type and devices of the second type.

For example, "100" means that all receiving UEs are Regular UEs, "101" means that all receiving UEs are RedCap UEs, and "110" means that there are both Regular UEs and RedCap UEs among the receiving UEs.

Mode 2: the indication information A indicates whether the first side control information includes the identification information corresponding to the signal S.

For example, the indication information A is a field reserved in the first sideline control information (such as SCI1), and the value of the field indicates whether the first sideline control information includes the identification information corresponding to the signal S. For example, if the value of the field is 0, it indicates that the first sideline control information does not include the identification information corresponding to the signal S, and if the value of the field is 1, it indicates that the first sideline control information includes the identification information corresponding to the signal S. It should be understood that the correspondence between the value of the field and the meaning represented by the value can be predefined (configured) or configured.

It should be understood that after the first device receives the first side control information from the second device, it can detect or decode the first side control information according to the number of bits of the first side control information. For example, the number of bits of the first side control information is 30, and the value of each bit is 0 or 1. The last bit of the 30 bits is the indication information A, and the first 10 bits of the 30 bits are the frequency resource indication information, or the first 5 bits are the frequency resource indication information and the 6th to 10th bits are the identification information; when the last bit is 0, the first device believes that the first side control information does not include the identification information, and the frequency domain resource position is determined according to the 1st to 10th bits; when the last bit is 1, the first device believes that the first side control information includes the identification information, and the frequency domain resource position is determined according to the 1st to 5th bits, and the identification information is determined according to the 5th to 10th bits.

When the signal S is data, the identification information corresponding to the signal S can be understood as the identification of the data sending device and/or the identification of the data receiving device. Alternatively, the identification information corresponding to the signal S can be understood as the identification corresponding to the data, such as a service identification. For example, the identification information can be a physical layer source ID (or layer 1 source ID), a physical layer destination ID (or layer 1 destination ID), a medium access control (MAC) layer source ID (or layer 2 source ID), or a MAC layer destination ID (or layer 2 destination ID), etc.

Optionally, the sending device corresponding to the signal S belongs to the first type of device (i.e., RedCap UE), and/or at least one of the receiving devices corresponding to the signal S belongs to the first type of device (i.e., RedCap UE).

In a possible implementation, the identification information corresponding to the signal S can be indicated by the FRIV field (or referred to as the frequency resource allocation indication field, which can also be understood as the frequency resource allocation indication field when the identification information is not included in SCI1). A bit can be reserved in SCI1 to indicate the type of the FRIV field. There are two types of FRIV fields: one is that the FRIV field is used entirely to indicate the frequency domain resource location information, that is, it does not include the identification information corresponding to the signal S; the other is that it can be used to indicate the identification information corresponding to the signal S.

For example, the second device uses 1 bit in SCI1 to indicate the type of the FRIV field (i.e., the indication information A includes this 1 bit). For example, "0" indicates that the FRIV field is entirely used to indicate frequency domain resource location information, and "1" indicates that part of the bits of the FRIV field can be used to indicate ID information (i.e., identification information corresponding to the signal S).

The following description is made by taking the example that the indication information A indicates that the first side control information includes the identification information corresponding to the signal S.

The number of bits of the identification information corresponding to the signal S may be determined according to the bandwidth size of the time-frequency resource set of the first type of device and the bandwidth size of the time-frequency resource set of the second type of device.

In a possible implementation, the number of bits B of the identification information corresponding to the signal S satisfies the following relationship:

or,

Wherein, M is the number of frequency domain units included in the time-frequency resources of the second type of device, N is the number of frequency domain units included in the time-frequency resources of the first type of device, N is a positive integer, and M is a positive integer greater than N. The frequency domain unit can be an RB set, a subchannel, a subband, an RB, etc.

Specifically, assuming that the number of sub-channels (or RB sets) in the Regular UE resource pool is M and the number of sub-channels (or RB sets) in the RedCap UE resource pool is N, the number of bits of the identification information corresponding to the signal S is determined according to the following method:

The number of bits available for the FRIV field is: (up to 2 resources can be reserved); or, (A maximum of 3 resources can be reserved).

The number of bits actually required for frequency domain resource indication is: (up to 2 resources can be reserved); or, (up to 3 resources are reserved);

The number of bits available for ID information indication is: (up to 2 resources can be reserved); or, (A maximum of 3 resources can be reserved).

It should be understood that when the first side control information does not include identification information, the number of bits of the frequency resource allocation indication field is B1; when the first side control information includes identification information, the number of bits of the frequency resource allocation indication field is B2, and the number of bits of the identification information is B1-B2, for example, the first B2 bits of B1 bits are used to indicate the frequency domain resource position, and the last B1-B2 bits of B1 bits are used to indicate the identification information.

The identification information corresponding to signal S includes at least one of the following: all or part of the bits of the source identification corresponding to signal S, all or part of the bits of the destination identification corresponding to signal S, all or part of the bits of the sending device identification corresponding to signal S, and all or part of the bits of the receiving device identification corresponding to signal S.

When the identification information corresponding to the signal S includes some bits of the above identification, the remaining bits can be carried in the second control information (SCI2) associated with the signal S and/or the MAC header.

In this application, "identifier" can also be replaced by "address", for example, it can be layer 1 identifier (layer1 ID, or physical layer identifier), layer 2 identifier (layer2 ID, or MAC layer identifier), RRC layer identifier, application layer identifier, device entity identifier, etc.

Table 1 shows the relationship between the number of bits used to indicate identification information (ID), the subcarrier spacing, and the number of PRBs.

Taking the subcarrier spacing of 30kHz as an example, assuming that the Regular UE resource pool bandwidth is 100MHz and the RedCap UE resource pool bandwidth is 20MHz, then under different numbers of subchannels, the number of bits in SCI1 that can be used to indicate ID information is 4 to 8.

Exemplarily, when the first side control information (e.g., SCI1) does not include identification information, the complete source ID (i.e., the source ID of the signal, or the ID of the sending end of the signal) and the destination ID (i.e., the destination ID of the signal, or the ID of the receiving end of the signal) are 24 bits respectively, of which 8 bits in the source ID and 16 bits in the destination ID are carried in SCI2, and the remaining bits are carried in the media access control (MAC) header.

When the first sideline control information (eg, SCI1) includes identification information:

In one possible implementation, the 8-bit source ID and/or 4 to 8 bits of the 16-bit destination ID in SCI2 may be carried in SCI1, and the number of bits carried in SCI2 may remain unchanged or only the remaining bits not carried in SCI1 may be carried.

In another possible implementation, 4 to 8 bits of the 16-bit source ID and/or the 8-bit destination ID in the MAC header may be carried in SCI1.

In another possible implementation, any 4 to 8 bits of the complete 24-bit source ID and/or the 24-bit destination ID may be carried in SCI1.

Table 1 Relationship between the number of bits used to indicate ID information and the subcarrier spacing and PRB number

Among them, M@100MHz represents the number of sub-channels included in a resource pool with a bandwidth size of 100 MHz, and N@20MHz represents the number of sub-channels included in a resource pool with a bandwidth size of 20 MHz.

320. The first device determines whether to detect the first sidewalk signal according to the first indication information.

In other words, the first device determines whether to detect (also called decode) the shared channel, such as whether to decode the PSSCH in 310, according to the first indication information.

The example in 310 is used below, the first indication information takes indication information A as an example, and the first side signal takes signal S as an example.

Corresponding to Example 1 in 310:

The first device determines whether to detect the signal S according to the indication information A (or the value of the first field), specifically as follows:

In a possible implementation, when the value of the first field is value A, the indication information A indicates that one or more devices are devices of the first type; when the value of the first field is value B, the indication information A indicates that one or more devices are devices of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a device of the first type, if the value of the first field is value A, the first device determines to detect the signal S; if the value of the first field is value B, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the first field is value A, the first device determines not to detect the signal S, and if the value of the first field is value B, the first device determines to detect the signal S;

In a possible implementation, when the value of the first field is value A, the indication information A indicates that the one or more devices are devices of the first type; when the value of the first field is value B, the indication information A indicates that at least one of the one or more devices is a device of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a first type of device, if the first field takes a value A or a value B, the first device determines the detection signal S,

When the first device is a device of the second type, if the value of the first field is value A, the first device determines not to detect the signal S, and if the value of the first field is value B, the first device determines to detect the signal S;

In a possible implementation, when the value of the first field is value A, the indication information A indicates that at least one of the one or more devices belongs to the first type of device; when the value of the first field is value B, the indication information A indicates that the one or more devices all belong to the second type of device.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a device of the first type, if the value of the first field is value A, the first device determines to detect the signal S; if the value of the first field is value B, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the first field is value A or value B, the first device determines the detection signal S;

In a possible implementation, when the value of the first field is value A, the indication information A indicates that one or more devices are devices of the first type; when the value of the first field is value B, the indication information A indicates that one or more devices are devices of the second type; when the value of the first field is value C, the indication information A indicates that one or more devices include devices of the first type and devices of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a device of the first type, if the value of the first field is value A or value C, the first device determines to detect the signal S; if the value of the first field is value B, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the first field is value A, the first device determines not to detect signal S; if the value of the first field is value B or value C, the first device determines to detect signal S.

For example, corresponding to case 1 in 310:

In unicast communication, when the receiving UE is a Regular UE, the transmitting UE indicates "0" in SCI1, and when the receiving UE is a RedCap UE, the transmitting UE indicates "1" in SCI1. The RedCap UE detects the signal S when it detects that the field indicates "1", and the Regular UE detects the signal S when it detects that the field indicates "0".

In multicast or broadcast communication, the sending UE and the receiving UE conduct one-to-many communication. In a possible implementation, "0" indicates that all receiving UEs are Regular UEs, and "1" indicates that all receiving UEs are RedCap UEs; if the target receiving UEs of the multicast/broadcast service include both Regular UEs and RedCap UEs, the sending UE can send two PSSCHs, indicating "0" and "1" in the corresponding SCI1 respectively; the RedCap UE detects the signal S when it detects that the field indicates "1", and the Regular UE detects the signal S when it detects that the field indicates "0".

Corresponding to another possible implementation method, "0" indicates that all receiving UEs are Regular UEs, and "1" indicates that at least one receiving UE is a RedCap UE. The RedCap UE detects signal S when detecting that the field indicates "1", and the Regular UE detects signal S when detecting that the field indicates "0" or "1".

Corresponding to another possible implementation, "0" indicates that at least one receiving UE is a Regular UE, and "1" indicates that all receiving UEs are RedCap UEs. The RedCap UE detects the signal S when it detects that the field indicates "0" or "1", and the Regular UE detects the signal S when it detects that the field indicates The detection signal S shows "0".

Corresponding to another possible implementation, "0" indicates that at least one receiving UE is a Regular UE, and "1" indicates that at least one UE is a RedCap UE. The RedCap UE detects the signal S when detecting that the field indicates "0" or "1", and the Regular UE detects the signal S when detecting that the field indicates "0" or "1".

Corresponding to case 2 in 310:

In unicast, multicast or broadcast scenarios, "00" indicates that all receiving UEs are Regular UEs, "01" indicates that all receiving UEs are RedCap UEs, and "10" indicates that there are both Regular UEs and RedCap UEs among the receiving UEs. RedCap UEs detect signal S when detecting that the field indicates "01" or "10", and Regular UEs detect signal S when detecting that the field indicates "00" or "10".

Corresponding to Example 2 in 310:

In one possible implementation, if the sending UE does not support "indicating the type of the receiving device", the sending UE sets the first field to the second value (for example, the second value is "0"); if the sending UE supports "indicating the type of the receiving device", the sending UE sets the first field to the first value (for example, the first value is "1"). The receiving UE detects the signal S when it detects that the value of the first field is the second value, and determines whether to detect the signal S based on the value of the second field when it detects that the value of the first field is the first value. For example, the first bit value is 0 to indicate that the second bit is not used to indicate the type of the receiving device, and the first bit value is 1 to indicate that the second bit is used to indicate the type of the receiving device. When the first bit value is 0, the first device determines to detect the signal S regardless of whether it is of the first type or the second type.

In a possible implementation, before receiving the indication information A, if the target sending UE indicates to the receiving UE that the target sending UE does not support "indicating the type of the receiving device", or if the target sending UE does not indicate to the receiving UE that the target sending UE supports "indicating the type of the receiving device", the receiving UE detects that the value of the first field is the second value and detects the signal S, and the receiving UE may not detect the signal S when it detects that the value of the first field is the first value; if the target sending UE indicates to the receiving UE that the target sending UE supports "indicating the type of the receiving device", the receiving UE determines whether to detect the signal S based on the value of the second field when it detects that the value of the first field is the first value, and the receiving UE may not detect the signal S when it detects that the value of the first field is the second value. The target sending UE can be understood as a sending UE that has a communication requirement with the receiving UE, for example, a UE that has established a unicast connection with the receiving UE, or a UE that belongs to the same communication group as the receiving UE.

When the value of the first field is the first value, the first device determines whether to detect the signal S according to the value of the second field, as follows:

In a possible implementation, when the value of the second field is the third value, the second field indicates that the one or more devices are devices of the first type, and when the value of the second field is the fourth value, the second field indicates that the one or more devices are devices of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a first type of device, if the value of the second field is the third value, the first device determines to detect the signal S; if the value of the second field is the fourth value, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the signal S, and if the value of the second field is the fourth value, the first device determines to detect the signal S;

In a possible implementation, when the value of the second field is the third value, the second field indicates that the one or more devices are devices of the first type, and when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a first type of device, if the second field takes the third value or the fourth value, the first device determines the detection signal S,

When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the signal S, and if the value of the second field is the fourth value, the first device determines to detect the signal S;

In a possible implementation, when the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device, and when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a first type of device, if the value of the second field is the third value, the first device determines to detect the signal S; if the value of the second field is the fourth value, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the second field is the third value or the fourth value, the first device determines the detection signal S;

In a possible implementation, when the value of the second field is the third value, the second field indicates that one or more devices are devices of the first type, when the value of the second field is the fourth value, the second field indicates that one or more devices are devices of the second type, and when the value of the second field is the fifth value, the second field indicates that one or more devices include devices of the first type and devices of the second type.

The first device determines whether to detect the signal S according to the indication information A, including:

When the first device is a first type of device, if the value of the second field is the third value or the fifth value, the first device determines to detect the signal S; if the value of the second field is the fourth value, the first device determines not to detect the signal S.

When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the signal S; if the value of the second field is the fourth value or the fifth value, the first device determines to detect the signal S.

The following is an example of the method for the receiving UE to determine whether to detect the signal S in combination with different communication scenarios.

In unicast communication, the sending UE and the receiving UE communicate one-to-one. "10" indicates that the receiving UE is a Regular UE, and "11" indicates that the receiving UE is a RedCap UE. The RedCap UE detects signal S when it detects that the field indicates "11", and the Regular UE detects signal S when it detects that the field indicates "10".

In multicast communication, the sending UE and the receiving UE perform one-to-many communication.

Corresponding to a possible implementation method, "10" indicates that all receiving UEs are Regular UEs, and "11" indicates that all receiving UEs are RedCap UEs; if the target receiving UEs of the multicast service include both Regular UEs and RedCap UEs, the sending UE can send two PSSCHs, indicating "10" and "11" in the corresponding SCI1 respectively. When the RedCap UE detects that the field indicates "11", it detects signal S, and when the Regular UE detects that the field indicates "10", it detects signal S.

Corresponding to another possible implementation method, "10" indicates that all receiving UEs are Regular UEs, and "11" indicates that at least one receiving UE is a RedCap UE. The RedCap UE detects that the field indicates "11", and the Regular UE detects signal S when it detects that the field indicates "10" or "11".

In another possible implementation, "10" indicates that at least one receiving UE is a Regular UE, and "11" indicates that all receiving UEs are RedCap UEs. A RedCap UE detects signal S when it detects that the field indicates "10" or "11", and a Regular UE detects signal S when it detects that the field indicates "10".

In another possible implementation, the transmitting UE uses 3 reserved bits in SCI1 to indicate the type of the receiving UE. "100" indicates that all receiving UEs are Regular UEs, "101" indicates that all receiving UEs are RedCap UEs, and "110" indicates that there are both Regular UEs and RedCap UEs among the receiving UEs. When the RedCap UE detects that the field indicates "101" or "110", it detects the signal S, and when the Regular UE detects that the field indicates "100" or "110", it detects the signal S.

The detection method in broadcast communication is the same as that in multicast communication and will not be described in detail.

It should be understood that the above description is based on the example of the receiving UE (i.e., the first device) detecting the signal S. If the receiving UE detects an indication other than the above indication for determining to detect the signal S, it will not detect the signal S. For example, in unicast communication, the sending UE and the receiving UE communicate one-to-one. "10" indicates that the receiving UE is a Regular UE, and "11" indicates that the receiving UE is a RedCap UE. When the RedCap UE detects that the field indicates "10", it determines not to detect the signal S; when the Regular UE detects that the field indicates "11", it determines not to detect the signal S. Other instructions are similar to this and will not be repeated.

Corresponding to method 2 in 310:

When the indication information A indicates that the first side control information includes identification information corresponding to the signal S, the first device determines whether to detect the signal S according to the identification information corresponding to the signal S.

In a possible implementation, when the identification information corresponding to the signal S is identical to all or part of the fields of the identification information corresponding to the first device, the first device determines to detect the signal S.

For example, the receiving UE interprets the FRIV field according to 1 bit in the indication information A. If some bits of the FRIV field can be used to indicate ID information, the receiving UE determines whether the ID information indicated by SCI1 matches the ID of the sending device and/or receiving device corresponding to the signal S. If it is determined that there is no match, there is no need to detect the signal S. If there is a match, the first device needs to detect the signal S. For example, the ID information indicated by SCI1 includes the upper 5 bits (or the first 5 bits) of the 16 bits of the layer 1 destination ID. If the receiving UE determines that the 5 bits indicated in the SCI1 are the same as the upper 5 bits of the layer 1 destination ID corresponding to the receiving UE, it is determined to detect the signal S, otherwise the signal S is not detected.

It should be understood that the first device should also receive the first sideline signal. For example, the second device sends the first sideline signal to the first device, and correspondingly, the first device receives the first sideline signal.

In this method, when the time-frequency resource sets of the first device and the second device overlap, and the SCI1 size of the first device and the second device is the same, the second device carries indication information in SCI1, which is used by the first device to determine whether to decode the data channel, thereby avoiding unnecessary PSSCH channel estimation and SCI2 decoding, thereby reducing the power consumption of the first device.

The various implementations described in this document may be independent solutions or may be combined according to internal logic, and all of these solutions fall within the protection scope of this application.

It should be understood that the first device in the present application can be a network device or a terminal device. The second device can be a network device or a terminal device. It can be a terminal device. In a communication scenario where at least one of the first device and the second device is a terminal device, the solutions of the present application can all be applied.

In the embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspective of interaction between various devices. In order to realize the functions in the methods provided by the embodiments of the present application, the network device or the terminal device may include a hardware structure and/or a software module, and the functions are realized in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function in the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

Similar to the above concept, as shown in FIG4 , the embodiment of the present application further provides a device 400 for implementing the functions of the first device or the second device in the above method. For example, the device may be a software module or a chip system. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. The device 400 may include: a processing unit 410 and a communication unit 420.

In the embodiment of the present application, the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, which are respectively used to execute the sending and receiving steps of the first device or the second device in the above method embodiment.

The communication device provided in the embodiment of the present application is described in detail below in conjunction with Figures 4 and 5. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the contents not described in detail can be referred to the method embodiment above, and for the sake of brevity, they will not be repeated here.

The communication unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the device used to implement the receiving function in the communication unit 420 may be regarded as a receiving unit, and the device used to implement the sending function in the communication unit 420 may be regarded as a sending unit, that is, the communication unit 420 includes a receiving unit and a sending unit. The communication unit may also be sometimes referred to as a transceiver, a transceiver, or an interface circuit, etc. The receiving unit may also be sometimes referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit may also be sometimes referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

When the communication device 400 performs the function of the first device in the process shown in FIG. 3 in the above embodiment:

The communication unit is used for sending and receiving information, such as receiving indication information A, receiving signal S, etc.

The processing unit is used to determine whether to detect the signal S according to the indication information A.

Optionally, the processing unit is also used to detect the signal S.

When the communication device 400 performs the function of the second device in any of the processes shown in FIG. 3 in the above embodiments:

A processing unit is used to determine indication information A, etc.

The communication unit is used to send and receive information, for example, to send indication information A, etc.

The above are only examples, and the processing unit 410 and the communication unit 420 may also perform other functions. For more detailed descriptions, please refer to the method embodiment shown in FIG3 or the related descriptions in other method embodiments, which are not repeated here.

As another possible product form, the first device and the second device described in the embodiment of the present application can be implemented by a general bus architecture. For ease of explanation, refer to Figure 5, which is a schematic diagram of the structure of a communication device 500 provided in an embodiment of the present application, and the communication device 500 includes a processor 501 and a transceiver 502. The communication device 500 can be a first terminal device, or a chip or chip system therein; or, the communication device 500 can be a second terminal device, or a chip or module therein; or, the communication device 500 can be a third terminal device, or a chip or module therein; or, the communication device 500 can be a fourth terminal device, or a chip or module therein; or, the communication device 500 can be a fifth terminal device, or a chip or module therein; or, the communication device 500 can be a sixth terminal device, or a chip or module therein. Figure 5 only shows the main components of the communication device 500. In addition to the processor 501 and the transceiver 502, the communication device 500 can further include a memory 503, and an input and output device (not shown in the figure).

Optionally, the processor 501 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 503 is mainly used to store the software program and data. The transceiver 502 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. The input and output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.

Optionally, the processor 501, the transceiver 502, and the memory 503 may be connected via a communication bus.

When the communication device is turned on, the processor 501 can read the software program in the memory 503, interpret 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 501 performs baseband processing on the data to be sent and outputs The baseband signal is sent to the RF circuit, and the RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 501, which converts the baseband signal into data and processes the data.

In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged remotely from the communication device.

In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the communication device 40 may take the form of a communication device 500 as shown in FIG. 5 .

As an example, the function/implementation process of the processing module 420 in FIG4 can be implemented by the processor 501 in the communication device 500 shown in FIG5 calling the computer execution instructions stored in the memory 503. The function/implementation process of the transceiver module 410 in FIG4 can be implemented by the transceiver 502 in the communication device 500 shown in FIG5.

As another possible product form, the first terminal device, the second terminal device, the third terminal device, the fourth terminal device, the fifth terminal device, or the sixth terminal device in the present application may adopt the composition structure shown in Figure 6, or include the components shown in Figure 6. Figure 6 is a composition diagram of a communication device 600 provided in the present application.

As shown in FIG6 , the communication device 600 includes at least one processor 601. Optionally, the communication device also includes a communication interface 602.

When the program instructions involved are executed in the at least one processor 601, the device 600 can implement the method provided by any of the aforementioned embodiments and any possible designs thereof. Alternatively, the processor 601 is used to implement the method provided by any of the aforementioned embodiments and any possible designs thereof through a logic circuit or execution code instructions.

The communication interface 602 may be used to receive program instructions and transmit them to the processor, or the communication interface 602 may be used for the communication device 600 to communicate and interact with other communication devices, such as interactive control signaling and/or business data, etc. Exemplarily, the communication interface 602 may be used to receive signals from other devices outside the communication device 600 and transmit them to the processor 601, or to send signals from the processor 601 to other communication devices outside the communication device 600.

Optionally, the communication interface 602 may be a code and/or data read/write interface circuit, or the communication interface 602 may be a signal transmission interface circuit between a communication processor and a transceiver, or may be a pin of a chip.

Optionally, the communication device 600 may further include at least one memory 603, which may be used to store required program instructions and/or data involved. It should be noted that the memory 603 may exist independently of the processor 601, or may be integrated with the processor 601. The memory 603 may be located inside the communication device 600, or may be located outside the communication device 600, without limitation.

Optionally, the communication device 600 may further include a power supply circuit 604, which may be used to supply power to the processor 601. The power supply circuit 604 may be located in the same chip as the processor 601, or in another chip other than the chip where the processor 601 is located.

Optionally, the communication device 600 may further include a bus 605 , and various parts of the communication device 600 may be interconnected via the bus 605 .

In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the communication device 40 shown in FIG. 4 may take the form of a communication device 600 shown in FIG. 6 .

As an example, the function/implementation process of the processing module 420 in FIG4 can be implemented by the processor 601 in the communication device 600 shown in FIG6 calling the computer execution instructions stored in the memory 603. The function/implementation process of the transceiver module 410 in FIG4 can be implemented by the communication interface 602 in the communication device 600 shown in FIG6.

It should be noted that the structure shown in FIG6 does not constitute a specific limitation on the first device and the second device. For example, in other embodiments of the present application, the first device and the second terminal device may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device; or the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device.

When the above communication device is a chip applied to a network device, the network device chip implements the function of the network device in the above method embodiment. The network device chip receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device; or the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device.

It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits, or a processor. (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

In the embodiments of the present application, the processor may be a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an ASIC. In addition, the ASIC may be located in a network device or a terminal device. Of course, the processor and the storage medium may also exist as discrete components in a network device or a terminal device.

Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) that contain computer-usable program code.

The present application is described with reference to the flowchart and/or block diagram of the method, device (system), and computer program product according to the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the function specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (32)

A communication method, characterized by comprising: A first device receives first sideline control information, where the first sideline control information is used to schedule a first sideline signal, and the first sideline control information includes first indication information, where the first indication information includes a first field and a second field, and when the first field takes a first value, the second field is used to indicate a type of a receiving device corresponding to the first sideline signal, wherein the type of the receiving device includes a first type and a second type, a time-frequency resource set of a device of the first type overlaps with a time-frequency resource set of a device of the second type, and a bandwidth supported by the device of the first type is smaller than a bandwidth supported by the device of the second type; The first device determines whether to detect the first sidewalk signal according to the first indication information. The method according to claim 1, wherein the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device have an overlapping part, including: The first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, resources in the first time-frequency resource set overlap with resources in the second time-frequency resource set, and a bandwidth of the first time-frequency resource set is smaller than a bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, The first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set. The method according to claim 1 or 2 is characterized in that the receiving device corresponding to the first side signal includes one or more devices, and the second field is used to indicate the type of the one or more devices. The method according to claim 3, characterized in that When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that the one or more devices are all devices of the second type. The first device determines whether to detect the first sidewalk signal according to the first indication information, including: When the first device is a device of the first type, if the value of the second field is the third value, the first device determines to detect the first side signal, and if the value of the second field is the fourth value, the first device determines not to detect the first side signal. When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the first side signal, and if the value of the second field is the fourth value, the first device determines to detect the first side signal; or, When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type. The first device determines whether to detect the first sidewalk signal according to the first indication information, including: When the first device is a device of the first type, if the value of the second field is the third value or the fourth value, the first device determines to detect the first sideline signal, When the first device is a device of the second type, if the value of the second field is the third value, the first device determines not to detect the first side signal, and if the value of the second field is the fourth value, the first device determines to detect the first side signal; or, When the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device; when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device. The first device determines whether to detect the first sidewalk signal according to the first indication information, including: When the first device is a device of the first type, if the value of the second field is the third value, the first device determines detecting the first sideline signal, and if the value of the second field is the fourth value, the first device determines not to detect the first sideline signal, When the first device is a device of the second type, if the value of the second field is the third value or the fourth value, the first device determines to detect the first sideline signal; or, When the second field takes a third value, the second field indicates that the one or more devices are devices of the first type; when the second field takes a fourth value, the second field indicates that the one or more devices are devices of the second type; when the second field takes a fifth value, the second field indicates that the one or more devices include devices of the first type and devices of the second type. The first device determines whether to detect the first sidewalk signal according to the first indication information, including: When the first device is a device of the first type, if the value of the second field is the third value or the fifth value, the first device determines to detect the first side signal; if the value of the second field is the fourth value, the first device determines not to detect the first side signal. When the first device is the second type of device, if the value of the second field is the third value, the first device determines not to detect the first side signal; if the value of the second field is the fourth value or the fifth value, the first device determines to detect the first side signal. The method according to any one of claims 1 to 4, characterized in that, the first device determines whether to detect the first side signal according to the first indication information, comprising: When the first field takes a second value, the first device determines to detect the first sideline signal according to the first field. A communication method, characterized by comprising: The second device sends first sideline control information, where the first sideline control information is used to schedule a first sideline signal, and the first sideline control information includes first indication information, where the first indication information includes a first field and a second field, and when the first field takes a first value, the second field is used to indicate a type of a receiving device corresponding to the first sideline signal, wherein the type of the receiving device includes a first type and a second type, a time-frequency resource set of a device of the first type overlaps with a time-frequency resource set of a device of the second type, and a bandwidth supported by the device of the first type is smaller than a bandwidth supported by the device of the second type; The second device sends the first sidetrack signal. The method according to claim 6, wherein the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device have an overlapping part, comprising: The first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, resources in the first time-frequency resource set overlap with resources in the second time-frequency resource set, and a bandwidth of the first time-frequency resource set is smaller than a bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, The first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set. The method according to claim 6 or 7 is characterized in that the receiving device corresponding to the first sideline signal includes one or more devices, and the second field is used to indicate the type of the one or more devices. The method according to claim 8, characterized in that When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that the one or more devices are all devices of the second type; or, When the value of the second field is the third value, the second field indicates that the one or more devices are all devices of the first type; when the value of the second field is the fourth value, the second field indicates that at least one of the one or more devices is a device of the second type; or When the value of the second field is the third value, the second field indicates that at least one of the one or more devices belongs to the first type of device, and when the value of the second field is the fourth value, the second field indicates that the one or more devices all belong to the second type of device; or, When the second field takes the third value, the second field indicates that the one or more devices belong to the first type of device. When the second field takes a fourth value, the second field indicates that the one or more devices all belong to the second type of device, and when the second field takes a fifth value, the second field indicates that the one or more devices include the first type of device and the second type of device. A communication method, characterized by comprising: The first device receives first sidewalk control information from the second device, where the first sidewalk control information is used to schedule a first sidewalk signal, and the first sidewalk control information includes first indication information, where the first indication information is used to indicate whether the first sidewalk control information includes identification information corresponding to the first sidewalk signal; When the first indication information indicates that the first sideways control information includes identification information corresponding to the first sideways signal, the first device determines whether to detect the first sideways signal according to the identification information corresponding to the first sideways signal. The method according to claim 10 is characterized in that the first device and the second device both belong to the first type of device, or the first device belongs to the first type of device and the second device belongs to the second type of device, or the first device belongs to the second type of device and the second device belongs to the first type of device, there is an overlapping part between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, and the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device. The method according to claim 11, wherein the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device have an overlapping part, comprising: The first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, resources in the first time-frequency resource set overlap with resources in the second time-frequency resource set, and a bandwidth of the first time-frequency resource set is smaller than a bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, The first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set. The method according to claim 11 or 12 is characterized in that the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, and the number of bits of the identification information corresponding to the first side signal is determined according to the bandwidth size of the time-frequency resource set of the first type of device and the bandwidth size of the time-frequency resource set of the second type of device. The method according to claim 13, characterized in that the number of bits B of the identification information corresponding to the first side signal satisfies the following relationship: or,
Among them, M is the number of frequency domain units included in the time-frequency resource set of the second type of device, N is the number of frequency domain units included in the time-frequency resource set of the first type of device, N is a positive integer, and M is a positive integer greater than N. The method according to any one of claims 10 to 14, characterized in that the first device determines whether to detect the first sideways signal according to identification information corresponding to the first sideways signal, comprising: When all or part of the fields of the identification information corresponding to the first sideline signal are identical to those of the identification information corresponding to the first device, the first device detects the first sideline signal. The method according to any one of claims 10 to 15 is characterized in that the identification information corresponding to the first side signal includes at least one of the following: all or part of the bits of the source identification corresponding to the first side signal, all or part of the bits of the destination identification corresponding to the first side signal, all or part of the bits of the sending device identification corresponding to the first side signal, or all or part of the bits of the receiving device identification corresponding to the first side signal. A communication method, characterized by comprising: The second device sends first sidewalk control information, where the first sidewalk control information is used to schedule a first sidewalk signal, and the first sidewalk control information includes first indication information, where the first indication information is used to indicate whether the first sidewalk control information includes identification information corresponding to the first sidewalk signal; The second device sends the first sidelink signal to the first device. The method according to claim 17, characterized in that the first device and the second device are both devices of the first type, or the first device is a device of the first type and the second device is a device of the second type, or the first device The device belongs to the second type of device and the second device belongs to the first type of device, there is an overlapping part between the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device, and the bandwidth supported by the first type of device is smaller than the bandwidth supported by the second type of device. The method according to claim 18, wherein the time-frequency resource set of the first type of device and the time-frequency resource set of the second type of device have an overlapping part, comprising: The first type of device is configured with a first time-frequency resource set, and the second type of device is configured with a second time-frequency resource set, resources in the first time-frequency resource set overlap with resources in the second time-frequency resource set, and a bandwidth of the first time-frequency resource set is smaller than a bandwidth of the second time-frequency resource set, the time-frequency resource set of the first type of device is the first time-frequency resource set, and the time-frequency resource set of the second type of device is the second time-frequency resource set; or, The first type of device and the second type of device are configured with a first time-frequency resource set, the time-frequency resource set of the first type of device is part of the resources in the first time-frequency resource set, and the time-frequency resource set of the second type of device is the first time-frequency resource set. The method according to claim 18 or 19 is characterized in that the first indication information indicates that the first side control information includes identification information corresponding to the first side signal, and the number of bits of the identification information corresponding to the first side signal is determined based on the bandwidth size of the time-frequency resource set of the first type of device and the bandwidth size of the time-frequency resource set of the second type of device. The method according to claim 20 is characterized in that the number of bits B of the identification information corresponding to the first side signal satisfies the following relationship: or,
Among them, M is the number of frequency domain units included in the time-frequency resource set of the second type of device, N is the number of frequency domain units included in the time-frequency resource set of the first type of device, N is a positive integer, and M is a positive integer greater than N. The method according to any one of claims 17 to 21 is characterized in that the identification information corresponding to the first side signal includes at least one of the following: all or part of the bits of the source identification corresponding to the first side signal, all or part of the bits of the destination identification corresponding to the first side signal, all or part of the bits of the sending device identification corresponding to the first side signal, or all or part of the bits of the receiving device identification corresponding to the first side signal. The method according to any one of claims 1 to 22 is characterized in that the first sidelink control information is carried on a physical sidelink control channel PSCCH. The method according to claim 23 is characterized in that the first sidelink signal is carried on a physical sidelink shared channel PSSCH, and the PSSCH is associated with the PSCCH. The method according to any one of claims 1 to 9, claims 11 to 16, and claims 18 to 24 is characterized in that the number of bits of control information carried by the PSCCH sent by the first type of device is the same as the number of bits of control information carried by the PSCCH sent by the second type of device. The method according to any one of claims 1 to 25 is characterized in that the first sidelink signal is one or more of second-order sidelink control information SCI, data, reference signal or feedback information. A communication device, characterized in that it includes a processing module and a transceiver module, and the communication device is used to execute the method as described in any one of claims 1 to 5 and claims 23 to 26, or the method as described in any one of claims 10 to 16 and claims 23 to 26. A communication device, characterized in that it includes a processing module and a transceiver module, and the communication device is used to execute the method as claimed in any one of claims 6 to 9, and claims 23 to 26, or the method as claimed in any one of claims 17 to 26. A communication device comprises a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device executes the method as described in any one of claims 1 to 26. A communication system comprising the communication device as claimed in claims 27 and 28. A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and when the computer program is run on a computer, the computer executes the method as described in any one of claims 1 to 26. A chip, characterized in that it comprises a processor and a communication interface, wherein the processor is used to read instructions to execute the method as claimed in claim 1 The method according to any one of claims 2 to 26.