CN119483816A

CN119483816A - Determination method, information sending method and related device

Info

Publication number: CN119483816A
Application number: CN202311018891.9A
Authority: CN
Inventors: 李成; 黄甦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2025-02-18
Also published as: WO2025036186A1

Abstract

The present application provides a determination method, an information sending method and a related device, which are used by a terminal device to determine the length of padding bits in a first SCI according to first information. The first SCI is related to a positioning function. Thereby realizing the design of an SCI for positioning. The method of an embodiment of the present application includes: a terminal device receives first information from a network device; the terminal device determines the length of padding bits in a first SCI according to the first information, and the first SCI is related to a positioning function.

Description

Determination method, information transmission method and related device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a determining method, an information sending method, and a related device.

Background

In a side-uplink system, only the communication function is considered by the side-uplink control information (sidelink control information, SCI) employed in the communication resource pool. Specifically, the current SCI includes a first stage SCI, and three second stage SCIs. The format of the first level SCI may be SCI1-A, with SCI1-A being used to schedule the physical side uplink shared channel (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH) and to indicate the second level SCI on the PSSCH. The second level SCI includes SCI2-A, SCI2-B, and SCI2-C. SCI2-a is used for decoding PSSCH, mainly for unicast scenarios, i.e. SCI2-a is used for transmission to a specific terminal device. SCI2-B is used for decoding PSSCH, mainly for multicast scenarios, i.e. SCI2-B is used for transmitting to terminal devices of the same area identity. SCI2-C is used to decode the PSSCH and provide inter-user cooperation information or request inter-user cooperation information for unicast scenarios.

As the current demand for side-link positioning increases, how to design SCI for positioning is a considerable problem.

Disclosure of Invention

The application provides a determining method, an information sending method and a related device, which are used for determining the length of a filling bit in a first SCI according to first information by terminal equipment. The first SCI is associated with a positioning function, and the terminal device determines the length of the filler bits in the first SCI through the first information. Thereby realizing the design of SCI for positioning. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

The first aspect of the present application provides a determining method, the method comprising:

The terminal device receives the first information from the network device, and determines the length of the filler bits in the first SCI based on the first information, the first SCI being associated with a positioning function.

In the above technical solution, the first SCI is related to a positioning function, and the terminal device determines the length of the padding bits in the first SCI according to the first information. Thereby realizing the design of SCI for positioning. The first SCI is also associated with a data transfer function, thereby simultaneously implementing data demodulation and positioning reference signal transceiving related functions. For example, the first SCI may contain fields contained in SCI2-A, SCI2-B or SCI2-C, while the total lengths of the fields contained in SCI2-A, SCI2-B and SCI2-C, respectively, are not the same. Thus, the terminal device can determine the length of the filler bits in the first SCI based on the first information. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

The second aspect of the present application provides an information sending method, including:

the network device determines first information for determining a length of a filler bit in a first SCI, the first SCI being associated with a positioning function, and the network device sends the first information to the terminal device.

In the above technical solution, the first SCI is related to a positioning function, and the first information is used to determine a length of a padding bit in the first SCI. Thereby realizing the design of SCI for positioning. The first SCI is also associated with a data transfer function, thereby simultaneously implementing data demodulation and positioning reference signal transceiving related functions. For example, the first SCI may contain fields contained in SCI2-A, SCI2-B or SCI2-C, while the total lengths of the fields contained in SCI2-A, SCI2-B and SCI2-C, respectively, are not the same. Thus, the first information is used to determine the length of the filler bits in the first SCI such that the total length of the first SCI is consistent regardless of the format of the SCI (e.g., SCI2-a, SCI2-B, or SCI 2-C) that the first SCI contains. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

Based on the first aspect or the second aspect, in one possible implementation manner, the format of the first SCI is a first format. For example, the first format may be SCI2-D. The first SCI is a second stage SCI.

Based on the first aspect, in one possible implementation manner, the first information includes a total length of the first SCI, and the terminal device determines a length of the filler bits in the first SCI according to the first information, including that the terminal device determines the length of the filler bits in the first SCI according to the total length of the first SCI. In this implementation, the first information is used to indicate the total length of the first SCI. And the length of the fields contained in SCI2-a, SCI2-B or SCI2-C is determined, so that the terminal device can determine the length of the padding bits in the first SCI.

Based on the first aspect, in one possible implementation, the first SCI includes a first field including a filler bit field and a field related to the SCI in the second format, and the filler bit field includes filler bits.

Based on the first aspect, in one possible implementation manner, the length of the padding bits is related to the number of positioning reference signal resources in the resource pool. The parameters relating to the length of the padding bits are shown. Since the first SCI is related to the positioning function, the number of positioning reference signal resources of the resource pool should be considered when considering the length of the filler bits of the first SCI. Thereby facilitating the determination of the length of the filler bits of the first SCI.

Based on the first aspect, in one possible implementation manner, the length of the first field is M, where M satisfies the following condition: Where N _SCI-2D is the total length of the first SCI, N _PRS is the number of positioning reference signal resources in the resource pool, which may be configured by the higher layer configuration signaling. For example, the base station may be configured by radio resource control (radio resource control, RRC) signaling, or the positioning server may be configured by signaling. Or the number of the reference signal resources may be calculated according to the configuration of the resource pool. For example, the number of reference signal resources is calculated based on at least one configuration parameter of the number of available orthogonal frequency division multiplexing (orthogonal frequency-division multiplexing, OFDM) symbols in one slot, the number of OFDM symbols available for reference signal transmission, the Comb fraction (Comb) of the reference signal, the number of symbols occupied by physical side-uplink control channel (PHYSICAL SIDELINK controlchannel, PSCCH) channels, whether feedback channels (PHYSICAL LAYER SIDELINK feedback channels, PSFCH) are present, and the pilot pattern (demodulation REFERENCE SIGNAL PATTERN, DMRS PATTERN) of the demodulated reference signal. K is an integer, for example, k=0, at which time M satisfies the following condition: To illustrate one way of calculating the length M of the first field in this implementation, as can be seen from the above equation, the value of M is related to the total length of the first SCI and the number of positioning reference signal resources in the resource pool. Showing a specific implementation of the length of the filler bits in the first SCI. In the resource pool, the length of the first SCI for positioning is the same. Therefore, the problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, and therefore decoupling of the positioning characteristics, the inter-user cooperation functions and other characteristics is achieved, and decoding failure of the first SCI is avoided.

Based on the first aspect, in one possible implementation manner, the first information is carried in the resource pool configuration information, and the length of the padding bit is related to the number of positioning reference signal resources in the resource pool. Since the first SCI is related to the positioning function, the number of positioning reference signal resources of the resource pool should be considered when considering the length of the filler bits of the first SCI. Thereby facilitating the determination of the length of the filler bits of the first SCI.

Based on the first aspect or the second aspect, in one possible implementation manner, the first information includes a length of a padding bit in the first SCI. Thereby facilitating the terminal device to determine the length of the filler bits in the first SCI. So that the total length of the first SCI is consistent regardless of the format of the first SCI carrying the fields contained in the SCI (e.g., SCI2-a, SCI2-B, or SCI 2-C). The problem that different terminal equipment has deviation to the understanding of the length of the first SCI is avoided, and the decoding failure of the first SCI is avoided.

Based on the first aspect or the second aspect, in one possible implementation manner, the first information includes a length of a padding bit in the first SCI when the first SCI includes SCI related information in the second format. Optionally, the second format includes at least one of SCI2-A, SCI2-B, or SCI2-C. Thereby facilitating the terminal device to determine the length of the filler bits in the first SCI. So that the total length of the first SCI is consistent regardless of the format of the first SCI carrying the fields contained in the SCI (e.g., SCI2-a, SCI2-B, or SCI 2-C). The problem that different terminal equipment has deviation to the understanding of the length of the first SCI is avoided, and the decoding failure of the first SCI is avoided.

Based on the first aspect, in one possible implementation manner, the first information includes SCI format information, where the SCI format information is used to indicate SCI in the third format, and the terminal device determines a length of a padding bit in the first SCI according to the first information, where the terminal device determines the length of the padding bit in the first SCI based on the SCI in the third format. So that the total length of the first SCI is consistent regardless of the format of the first SCI carrying the fields contained in the SCI (e.g., SCI2-a, SCI2-B, or SCI 2-C). The problem that different terminal equipment has deviation to the understanding of the length of the first SCI is avoided, and the decoding failure of the first SCI is avoided.

Based on the first aspect, in one possible implementation manner, the third format is SCI2-A, SCI2-B, or SCI2-C.

Based on the first aspect or the second aspect, in one possible implementation manner, the first SCI is configured to indicate control information related to positioning reference signal resources, and the first SCI is further configured to indicate control information related to data transmission. Thereby enabling transmission of the positioning reference signal and data through the first SCI.

Based on the first aspect or the second aspect, in one possible implementation manner, the control information related to the data transmission is a field included in SCI2-A, SCI-B or SCI 2-C. And reserving corresponding data transmission resources through the control information related to the data transmission, and carrying out data transmission.

Based on the first aspect or the second aspect, in a possible implementation manner, the first information includes first indication information, and the first indication information indicates a formula for calculating a total length of the first SCI. Thereby facilitating the terminal device to calculate the total length of the first SCI by the formula indicated by the first information. And the length of the fields contained in SCI2-a, SCI2-B or SCI2-C is determined, so that the terminal device can determine the length of the padding bits in the first SCI. Showing a specific implementation of the length of the filler bits in the first SCI. In the resource pool, the length of the first SCI for positioning is the same. Therefore, the problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, and therefore decoupling of the positioning characteristics, the inter-user cooperation functions and other characteristics is achieved, and decoding failure of the first SCI is avoided.

Based on the first aspect or the second aspect, in one possible implementation manner, the formula for calculating the total length of the first SCI is a first formula or a second formula, where the first formula is related to a first numerical value, and the first numerical value is not less than 48;

the second formula is related to a second value, a third value a, a fourth value b and a fifth value c, wherein the second value is not less than 41, the

For the number of sub-channels in the resource pool,N _{rsv_period} is the number of elements in the resource reservation period list configured by the higher layer signaling, and μ is a parameter related to the subcarrier spacing. Values associated with the first formula and values associated with the second formula are shown. The first formula is associated with a first value not less than 48 and the length of the field contained by SCI2-B is 48. It can be seen that the total length of the first SCI calculated by the terminal device through the first formula is the total length of the first SCI when the first SCI includes the SCI2-B related fields. And the second formula is associated with a second value, a third value, a fourth value, b, and a fifth value, c. These values are related to the fields comprised by the SCI2-C, whereby it is known that the total length of the first SCI calculated by the terminal device by the second formula is the total length of the first SCI when the first SCI comprises the SCI2-C related fields.

Based on the first aspect or the second aspect, in one possible implementation manner, the first formula is l=48+d+e, L is the total length of the first SCI, d is the length of a field related to the positioning function in the first SCI, and e is an integer greater than 0. A specific form of the first formula is shown. L equals 48 plus d. Thereby enabling transmission of the demodulation data and the positioning reference signal through the first SCI. The total length of the first SCI calculated by the terminal device through the first formula is the total length of the first SCI when the first SCI includes SCI2-B related fields.

Based on the first aspect or the second aspect, in one possible implementation manner, the second formula is that l=41+a+b+c+d+e, L is the total length of the first SCI, d is the length of a field related to the positioning function in the first SCI, and e is an integer greater than 0. A specific form of the second formula is shown. L=41+a+b+c+d. Thereby enabling transmission of the demodulation data and the positioning reference signal through the first SCI. The total length of the first SCI calculated by the terminal device through the second formula is the total length of the first SCI when the first SCI includes SCI2-C related fields.

Based on the first aspect or the second aspect, in one possible implementation manner, the first information is carried in resource pool configuration information, positioning reference signal resource configuration information, positioning reference signal configuration information, PSCCH configuration information, or physical side uplink shared channel (PHYSICAL SIDELINK SHAREDCHANNEL, PSSCH) configuration information.

A third aspect of the present application provides a determining method, the method comprising:

The terminal equipment determines the length of the filling bit in the first SCI according to the first length, the first SCI is related to the positioning function, the first length is the total length of the first SCI when the first SCI contains the SCI in the fourth format, and the terminal equipment supplements the length of the first SCI through the length of the filling bit.

In the above technical solution, the terminal device determines the length of the padding bits in the first SCI based on the first length. Thereby avoiding the problem of deviation in understanding the length of the first SCI by different terminal devices. The decoding failure of the first SCI is avoided, and the normal operation of the positioning reference signal and the data in the simultaneous transmission is ensured. Enabling coexistence of terminal devices supporting different capabilities and/or different characteristics. Different terminal devices have the same understanding of the length of the first SCI.

Based on the third aspect, in one possible implementation manner, the fourth format is SCI2-C. The length of SCI2-C is large relative to the lengths of SCI2-A and SCI 2-B. Therefore, the terminal device can determine the length of the filler bits in the first SCI based on the total length of the first SCI when the first SCI includes the SCI of the fourth format. Thereby realizing that different terminal equipments use the first SCI with the same length. The problem of deviation of understanding of the length of the first SCI by different terminal devices is avoided.

Based on the third aspect, in one possible implementation manner, the value of the providing or request indication field in the SCI in the fourth format is 0. In this implementation, the fourth format is SCI2-C, the value of the provide or request indication field in SCI2-C is 0, and the length of SCI2-C is the largest. Thus, the terminal device can determine the total length of the first SCI and the length of the filler bits based on the length of the SCI2-C when the value of the provide or request indication field in the SCI2-C is 0. Thereby avoiding the problem of deviation in understanding the length of the first SCI by different terminal devices. The decoding failure of the first SCI is avoided, and the normal operation of the positioning reference signal and the data in the simultaneous transmission is ensured. Enabling coexistence of terminal devices supporting different capabilities and/or different characteristics. Different terminal devices have the same understanding of the length of the first SCI.

A fourth aspect of the present application provides a communication apparatus comprising:

The receiving and transmitting module is used for receiving first information from the network equipment;

A processing module for determining the length of the filler bits in a first SCI based on the first information, the first SCI being associated with a positioning function.

A fifth aspect of the present application provides a communication apparatus comprising:

A processing module for determining first information for determining a length of a filler bit in a first SCI, the first SCI being associated with a positioning function;

and the receiving and transmitting module is used for transmitting the first information to the terminal equipment.

Based on the fourth or fifth aspect, in a possible implementation manner, the format of the first SCI is a first format. For example, the first format may be SCI2-D. The first SCI is a second stage SCI.

Based on the fourth aspect, in one possible implementation manner, the first information includes a total length of the first SCI, and the processing module is specifically configured to determine a length of the padding bits in the first SCI according to the total length of the first SCI.

Based on the fourth aspect, in one possible implementation manner, the length of the padding bits is related to the number of positioning reference signal resources in the resource pool.

Based on the fourth aspect, in one possible implementation, the first SCI includes a first field including a filler bit field and a field related to the SCI in the second format, and the filler bit field includes filler bits.

Based on the fourth aspect, in one possible implementation manner, the length of the first field is M, where M satisfies the following condition: Where N _SCI-2D is the total length of the first SCI, N _PRS is the number of positioning reference signal resources in the resource pool, and K is an integer.

Based on the fourth or fifth aspect, in a possible implementation manner, the first information is carried in resource pool configuration information, and a length of the padding bits is related to a number of positioning reference signal resources in the resource pool.

Based on the fourth or fifth aspect, in a possible implementation manner, the first information includes a length of a padding bit in the first SCI.

In one possible implementation manner, the first information includes a length of a padding bit in the first SCI when the first SCI contains SCI related information in the second format.

Based on the fourth aspect, in one possible implementation manner, the first information includes SCI format information, where the SCI format information is used to indicate SCI in the third format, and the processing module is specifically configured to determine a length of the padding bits in the first SCI based on the SCI in the third format.

Based on the fourth aspect, in one possible implementation, the third format is SCI2-A, SCI2-B, or SCI2-C.

Based on the fourth or fifth aspect, in a possible implementation manner, the first SCI is configured to indicate control information related to positioning reference signal resources, and the first SCI is further configured to indicate control information related to data transmission.

Based on the fourth or fifth aspect, in a possible implementation manner, the control information related to the data transmission is a field included in SCI2-A, SCI-B or SCI 2-C.

Based on the fourth or fifth aspect, in a possible implementation manner, the first information includes first indication information, where the first indication information indicates a formula for calculating a total length of the first SCI.

Based on the fourth or fifth aspect, in one possible implementation manner, the formula for calculating the total length of the first SCI is a first formula or a second formula, where the first formula is related to a first numerical value, and the first numerical value is not less than 48;

For the number of sub-channels in the resource pool,N _{rsv_period} is the number of elements in the resource reservation period list configured by the higher layer signaling, and μ is a parameter related to the subcarrier spacing.

Based on the fourth or fifth aspect, in one possible implementation manner, the first formula is l=48+d+e, L is the total length of the first SCI, d is the length of a field related to the positioning function in the first SCI, and e is an integer greater than 0.

Based on the fourth or fifth aspect, in one possible implementation manner, the second formula is that l=41+a+b+c+d, L is the total length of the first SCI, and d is the length of a field related to the positioning function in the first SCI.

Based on the fourth or fifth aspect, in a possible implementation manner, the first information is carried in resource pool configuration information, positioning reference signal resource configuration information, positioning reference signal configuration information, PSCCH configuration information, or PSSCH configuration information.

A sixth aspect of the present application provides a communication apparatus comprising:

The processing module is used for determining the length of the padding bit in the first SCI according to the first length, the first SCI is related to the positioning function, the first length is the total length of the first SCI when the first SCI contains the SCI in the fourth format, and the length of the first SCI is complemented by the length of the padding bit.

Based on the sixth aspect, in one possible implementation manner, the fourth format is SCI2-C.

Based on the sixth aspect, in one possible implementation manner, the value of the provide or request indication field in the SCI in the fourth format is 0.

A seventh aspect of the application provides a communication device comprising a processor and a memory. The memory has stored therein a computer program or computer instructions for invoking and running the computer program or computer instructions stored in the memory to cause the processor to implement any of the implementations of any of the first to third aspects.

Optionally, the communication device further comprises a transceiver, and the processor is configured to control the transceiver to transmit and receive signals.

An eighth aspect of the present application provides a communication device comprising a processor. The processor is configured to invoke a computer program or computer instructions stored therein to cause the processor to implement any of the implementations as in any of the first to third aspects.

A ninth aspect of the present application provides a communication device comprising a processor for performing any one of the implementations of any one of the first to third aspects.

A tenth aspect of the application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform an implementation of any of the first to third aspects.

An eleventh aspect of the application provides a computer readable storage medium comprising computer instructions which, when run on a computer, cause the computer to perform any one of the implementations of any one of the first to third aspects.

A twelfth aspect of the application provides a chip apparatus comprising a processor for invoking a computer program or computer instructions in the memory to cause the processor to perform any implementation of any of the above aspects as in the first to third aspects.

Optionally, the processor is coupled to the memory through an interface.

A thirteenth aspect of the application provides a communication system comprising a terminal device for performing any of the implementations as shown in the first aspect and a network device for performing any of the implementations as shown in the second aspect.

From the above technical solutions, the embodiment of the present application has the following advantages:

According to the technical scheme, the terminal equipment receives the first information from the network equipment. The terminal device then determines the length of the filler bits in the first SCI based on the first information. The first SCI is associated with a positioning function. It follows that the first SCI is associated with a positioning function and the terminal device determines the length of the filler bits in the first SCI from the first information. Thereby realizing the design of SCI for positioning. The first SCI is also associated with a data transfer function, thereby simultaneously implementing data demodulation and positioning reference signal transceiving related functions. For example, the first SCI may include fields included in SCI2-A, SCI2-B or SCI2-C, and total lengths of the fields included in SCI2-A, SCI2-B and SCI2-C are different, respectively, so that the terminal device can determine the length of the filler bits in the first SCI according to the first information. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

Drawings

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

FIG. 2 is a schematic diagram of another exemplary communication system according to the present application;

FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another embodiment of a communication system according to the present application;

FIG. 5 is a schematic diagram of a resource pool in a side-uplink system;

FIG. 6 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 7A is a schematic diagram of an embodiment of a determining method and an information sending method according to the present application;

FIG. 7B is another schematic diagram of an application scenario of an embodiment of the present application;

FIG. 8 is a schematic diagram of another embodiment of a determination method according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a communication device according to an embodiment of the present application;

FIG. 10 is a schematic diagram of another embodiment of a communication device;

FIG. 11 is a schematic diagram of a communication device according to an embodiment of the present application;

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

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

Detailed Description

The embodiment of the application provides a determining method, an information sending method and a related device, which are used for determining the length of a filling bit in a first SCI according to first information by terminal equipment. The first SCI is associated with a positioning function, and the terminal device determines the length of the filler bits in the first SCI through the first information. Thereby realizing the design of SCI for positioning. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In the description of the present application, "/" means "or" unless otherwise indicated, for example, A/B may mean A or B. The term "and/or" herein is merely an association relation describing the association object, and means that three kinds of relations may exist, for example, a and/or B may mean that a exists alone, a and B exist together, and B exists alone. Furthermore, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one of a, b, or c may represent a, b, c, a and b, a and c, b and c, or a and b and c. Wherein a, b and c can be single or multiple.

The technical solutions of the embodiments of the present application may be applied to various communication systems, for example, a fifth generation (5th generation,5G) system or a new radio, NR, system, a wireless local area network (wireless local area networks, WLAN) system, a third generation partnership project (3rd generation partnership project,3GPP) related cellular system, a communication system supporting multiple wireless technology integration, a device-to-device (D2D) communication system, a machine-to-machine (machine to machine, M2M) communication system, a machine type communication (MACHINE TYPE communication, MTC) system, a Sidelink (SL) communication system, or a future-oriented evolution system, etc., and the present application is not limited.

For example, the side-link communication system includes an internet of things system. The system can be a vehicle networking (vehicle to everything, V2X) system, an industrial Internet of things system, an intelligent home system or the like. Such as public safety systems (public safety), smart city systems, transportation safety systems, industrial control systems, unmanned systems, industrial robotic systems, and the like. The V2X system may be a vehicle-to-vehicle (vehicle to vehicle, V2V) communication system (which may also be referred to as a vehicle-to-vehicle communication system), a vehicle-to-infrastructure (vehicle to infrastructure, V2I) communication system (which may also be referred to as a vehicle-to-infrastructure communication system), a vehicle-to-pedestrian (vehicle to pedestrian, V2P) communication system (which may also be referred to as a vehicle-to-person communication system), or a vehicle-to-network (vehicle to network, V2N) communication system (which may also be referred to as a vehicle-to-network communication system).

Some scenarios to which the present application is applicable are described below in connection with fig. 1 to 4.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application. Referring to fig. 1, the communication system includes a terminal device 101, a terminal device 102, an access network device 103, an access and mobility management function (ACCESS AND mobility management function, AMF) 104, and a location management function (location management function, LMF) 105.

Alternatively, the terminal device 101 and the terminal device 102 may be connected through an interface. The access network device 103 and the AMF104 may be connected through an interface, and the AMF104 and the LMF105 may be connected through an interface.

For example, the terminal device 101 and the terminal device 102 may be connected by an interface of proximity communication 5 (prose communication, pc 5). The terminal equipment 101 and the terminal equipment 102 are respectively connected with the access network equipment 103 through NR-Uu interfaces, and the access network equipment 103 is connected with the AMF104 through NG-C interfaces. The AMF104 and the LMF105 are connected through an NL1 interface. The NR-Uu interface is a communication interface between a terminal device and an access network device. The NG-C interface is the control plane interface between the access network and the core network. The NL1 interface is a communication interface between the AMF and the LMF. The NR-Uu interface is a communication interface between a terminal device and an access network device. The NG-C interface is the control plane interface between the access network and the core network. The NL1 interface is a communication interface between the AMF and the LMF.

Fig. 1 described above only shows an example of the communication system comprising a terminal device 101, a terminal device 102 and an access network device 103. In practical applications, the communication system may include at least two terminal devices and at least one access network device, which is not limited by the present application. The technical solution of the present application may be implemented between the terminal device 101 and the access network device 103. Or the terminal device 101 and the terminal device 102 may execute the technical solution of the present application.

Fig. 2 is a schematic diagram of another configuration of a communication system according to an embodiment of the present application. Referring to fig. 2, the communication system includes a terminal device 201 and a terminal device 202. The terminal device 201 communicates with the terminal device 202 through the PC5 interface. The technical solution of the present application may be implemented between the terminal device 201 and the terminal device 202.

Fig. 3 is a schematic diagram of still another configuration of a communication system according to an embodiment of the present application. Referring to fig. 3, the communication system includes a terminal device 301, a roadside unit (RSU) 302, an RSU303, and an RSU304. As shown in fig. 3, communication is performed between the terminal device 301 and the RSU through the PC5 interface. The technical solution of the present application can be used between the terminal device 301 and the RSU.

Note that, in the communication system shown in fig. 3, the form of the RSU is merely an example, and the RSU is not limited in the present application.

It should be noted that, the RSU is a roadside unit deployed at a roadside, supports a side uplink communication and a positioning related protocol, and can provide a wireless communication function for a terminal device. The RSUs may be various forms of roadside stations, access points, side-link devices. For access network devices, an RSU is a kind of terminal device. For the terminal device, the RSU may act as an access network device.

Fig. 4 is a schematic diagram of another configuration of a communication system according to an embodiment of the present application. The communication system comprises a terminal device 401, a terminal device 402, an access network device 403 and an LMF404. Terminal device 401 is located within the signal coverage of access network device 403, while terminal device 402 is not located within the signal coverage of access network device 403. The technical solution of the present application may be implemented between the terminal device 401 and the access network device 403. Or the technical scheme of the present application may be executed between the terminal device 401 and the terminal device 402.

In the communication systems shown in fig. 1 and fig. 4, the LMF is the name of the present communication system, and in future communication systems, the name of the LMF may change with the evolution of the communication system, and the present application does not limit the name of the LMF. For example, the LMF may be referred to as a positioning device for performing a positioning calculation of the location of the terminal device. In the present communication system or future communication system, a functional network element having other names with functions similar to those of the LMF may be understood as a positioning device.

The communication system to which the present application is applicable is merely an example, and in practical application, the present application may also be applicable to other communication systems with positioning requirements, and the present application is not limited thereto. The above examples do not limit the technical solution of the present application.

The terminal device and the network device according to the present application are described below.

The terminal device may be a wireless terminal device capable of receiving access network device scheduling and indication information. The wireless terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with wireless connectivity, or other processing device connected to a wireless modem.

A terminal device, also called a User Equipment (UE), a Mobile Station (MS), a customer premise equipment (customer premise equipment, CPE), a Mobile Terminal (MT), or the like. A terminal device is a device that includes wireless communication functionality (providing voice/data connectivity to a user). For example, a handheld device having a wireless connection function, an in-vehicle device, or the like. Examples of some terminal devices are currently mobile phones, tablet computers, notebook computers, palm computers, trains, cars, drones, airplanes, mobile internet devices (mobile INTERNET DEVICE, MID), wearable devices, virtual Reality (VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control (industrial control), wireless terminals in the internet of vehicles, wireless terminals in unmanned (SELF DRIVING) (e.g., drones, vehicles), wireless terminals in smart grid (SMART GRID), wireless terminals in transportation security (transportation safety), wireless terminals in smart city (SMART CITY), etc. For example, the wireless terminal in the internet of vehicles may be a vehicle-mounted device, a whole vehicle device, a vehicle-mounted module, a vehicle, or the like. The wireless terminal in the industrial control may be a robot or the like. Or the terminal device may be a terminal device in the fifth generation (the 5th generation,5G) network or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc. Alternatively, the terminal device may communicate with multiple access network devices of different technologies, for example, the terminal device may communicate with an access network device supporting long term evolution (long term evolution, LTE), may communicate with an access network device supporting 5G, and may also be dual-connected with an access network device supporting LTE and an access network device supporting 5G. The application is not limited.

In the present application, the means for realizing the function of the terminal device may be the terminal device, or may be a means capable of supporting the terminal device to realize the function. Such as a system on a chip, a hardware circuit, a software module, or a hardware circuit plus a software module. The apparatus may be installed in the terminal device or may be used in cooperation with the terminal device. For example, the terminal device may also be a chip, a module or a control unit in the various possible devices or apparatuses shown above, and the application is not limited specifically. In the technical scheme provided by the application, the device for realizing the functions of the terminal equipment is the terminal equipment, and the terminal equipment is the UE as an example.

In the present application, the chip system may be formed by a chip, or may include a chip and other discrete devices.

The network device may be a device in a wireless network. For example, the network device may be a device deployed in a radio access network to provide wireless communication functionality for terminal devices. For example, the network device may be a radio access network (radio access network, RAN) node that accesses the terminal device to the wireless network, which may also be referred to as an access network device, RAN entity, access node, network node, or communication means, etc.

In particular, the network device may be an access network device for a third generation partnership project (3rd generation partnership project,3GPP) related cellular system. Such as a 4G communication system, a 5G communication system, or a 6G communication system. The network device may also be an access network device in an open RAN, O-RAN or ORAN, or a cloud radio access network (cloud radio access network, CRAN). Or the network device may be an access network device in a communication system obtained by fusing two or more communication systems.

The network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), an Access Point (AP) in a wireless fidelity (WIRELESS FIDELITY, WIFI) system, a macro base station, a micro base station, a wireless relay Node, a donor Node, a wireless controller in CRAN scenarios, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission AND RECEIVING point, TRP), and the like, and may also be a network device in a 5G mobile communication system. For example, a next generation NodeB (gNB) in an NR system, TRP, TP, or one or a group of base stations (including multiple antenna panels) antenna panels in a 5G mobile communication system, or the network device may also be a network node constituting a gNB or transmission point. For example, a centralized unit (centralized unit, CU), a Distributed Unit (DU), a CU-Control Plane (CP), a CU-User Plane (UP), or a Radio Unit (RU), etc. The CU and the DU may be provided separately or may be included in the same network element, e.g. the BBU. The RU may be included in a radio frequency device or a radio frequency unit. For example in a remote radio unit (remote radio unit, RRU), an active antenna processing unit (ACTIVE ANTENNA unit, AAU) or a remote radio head (remote radio head, RRH). Or the network device may also be a server, wearable device, vehicle or in-vehicle device, etc. For example, the access network device in the V2X technology may be a Road Side Unit (RSU).

It should be noted that in different systems, a CU (or CU-CP and CU-UP), a DU or RU may have different names, but those skilled in the art will understand the meaning. For example, in ORAN systems, a CU may also be referred to as an open centralized unit (open centralized unit, O-CU) or an open CU, a DU may also be referred to as an open distributed unit (open distributed unit, O-DU), a centralized unit-control plane (centralized unit control plane, CU-CP) may also be referred to as an O-CU-CP or an open CU-CP, a centralized unit-user plane (centralized unit user plane, CU-UP) may also be referred to as an O-CU-UP or an open CU-UP, and an RU may also be referred to as an open radio unit (O-RU), as the application is not limited in this respect. Any unit of CU, CU-CP, CU-UP, DU and RU in the present application may be implemented by a software module, a hardware module, or a combination of software and hardware modules.

Alternatively, for network elements in the ORAN system, each network element may implement the protocol layer functions as shown in table 1 below.

TABLE 1

The architecture of CUs and DUs of the access network device is presented below. The access network device comprises at least one CU and at least one DU. Optionally, the access network device further comprises at least one RU.

The following description will take an example in which the access network device includes a CU and a DU. The CUs have part of the functionality of the core network and may include CUs-CPs and CUs-UPs. CUs and DUs may be configured according to the protocol layer functions of the wireless network they implement. For example, a CU is configured to implement the functions of a packet data convergence layer protocol (PACKET DATA convergence protocol, PDCP) layer and above (e.g., the RRC layer and/or SDAP layer), a DU is configured to implement the functions of a PDCP layer below (e.g., the RLC layer, the MAC layer, and/or the Physical (PHY) layer), and a CU is configured to implement the functions of a PDCP layer above (e.g., the RRC layer and/or SDAP layer), a DU is configured to implement the functions of a PDCP layer below (e.g., the RLC layer, the MAC layer, and/or the PHY layer, etc.).

When a CU includes a CU-CP for implementing the control plane functions of the CU and a CU-UP for implementing the user plane functions of the CU. For example, when the CU is configured to implement functions of the PDCP layer, the RRC layer, and the SDAP layer, the CU-CP is used to implement functions of the RRC layer and control plane functions of the PDCP layer, and the CU-UP is used to implement functions of the SDAP layer and user plane functions of the PDCP layer.

The CU-CP may interact with network elements in the core network for implementing control plane functions. The network elements in the core network for implementing the control plane functions may be access and mobility function network elements, such as access and mobility functions (ACCESS AND mobility management function, AMF) in a 5G system. The access and mobility function network element is used for being responsible for mobility management in a mobile network, such as location update of terminal equipment, registration network of terminal equipment, handover of terminal equipment, etc. The CU-UP may interact with network elements in the core network for implementing user plane functions. Network elements in the core network for implementing user plane functions, e.g. user functions (User Plane Function, UPF) in the 5G system, are responsible for forwarding and receiving data in the terminal device.

The configuration of the CU and the DU above is merely an example, and the CU and the DU may have functions configured as needed. For example, a CU or DU may be configured to have functions of more protocol layers, or may be configured to have partial processing functions of protocol layers. For example, a part of functions of the RLC layer and functions of protocol layers above the RLC layer are set at CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are set at DU. For another example, the functionality of a CU or DU may be partitioned by traffic type or other system requirements. For example, according to the time delay division, a function whose processing time is required to satisfy the smaller time delay requirement is set in the DU, and a function whose processing time is not required to satisfy the time delay requirement is set in the CU.

The DU and RU may cooperate to collectively implement the functionality of the PHY layer. One DU may be connected to one or more RUs. The functions possessed by DUs and RUs may be configured in a variety of ways depending on the design. For example, a DU is configured to implement baseband functionality and an RU is configured to implement medium radio frequency functionality. As another example, the DU is configured to implement higher layer functions in the PHY layer, and the RU is configured to implement lower layer functions in the PHY layer or to implement the lower layer functions and the radio frequency functions. The higher layer functions in the physical layer may include a portion of the functions of the physical layer that are closer to the MAC layer, and the lower layer functions in the physical layer may include another portion of the functions of the physical layer that are closer to the medium radio frequency side.

In the present application, the means for realizing the functions of the network device may be the network device, or may be a means capable of supporting the network device to realize the functions. For example, a system on a chip, a hardware circuit, a software module, or a combination of hardware and software modules, the apparatus may be installed in or matched to a network device. For example, the network device may be the device or apparatus shown above, or may be a component (e.g., a chip), a module, or a unit in the device or apparatus shown above, and the application is not limited specifically. In the technical solution provided in the present application, the device for implementing the function of the network device is a network device, and the network device is a base station as an example, which describes the technical solution provided in the present application.

In order to facilitate understanding of the technical scheme of the present application, some technical terms related to the present application are first described.

A resource pool (resource pool) in which a terminal device may use resources in a side-link resource pool for data transmission, one resource pool may configure one or more consecutive physical resource blocks (physical resource block, PRBs) (or referred to as Resource Blocks (RBs)) in the frequency domain and one or more slots (slots) in the time domain, where the slots may be contiguous or non-contiguous.

To facilitate understanding of the meaning of the resource pool, an exemplary description of the resource pool in the side-link system is described below in connection with fig. 5. Referring back to fig. 5, a portion of the carrier bandwidth (carrier bandwidth) for the sidelink spectrum may be referred to as a sidelink fractional bandwidth SL BWP (sidelink bandwidth part), within which multiple resource pools may be defined. Five resource pools (resource pool #1, resource pool #2, resource pool #3, resource pool #4, and resource pool # 5) as shown in fig. 5.

Independent PSCCH, PSSCH and other channels can be configured in each resource pool, and independent sensing and resource allocation can be performed. The resource pool may be configured with a plurality of consecutive RBs in the frequency domain, and a certain number of consecutive RBs may constitute one subchannel. The resource allocation and the data transmission may be performed in units of subchannels. I.e. the terminal device may occupy one or more sub-channels for data transmission. In other words, the minimum unit granularity at which the terminal device transmits or receives side uplink data may be referred to as a subchannel. The number of RBs in one sub-channel may be 10, 12, 15, 20, 25, 50, 75 or 100.

Alternatively, in the side-uplink communication system, the resource pool used for communication may be referred to as a communication resource pool, and the resource pool used for positioning may be referred to as a positioning resource pool.

Resource refers to time-frequency resource in the resource pool. The time domain resource may be represented as a symbol (symbol), a slot (slot), a sub-slot (sub-slot), a mini-slot (mini-slot), a partial slot (partial slot), a subframe (sub-frame), a radio frame (frame), a sensing slot (sensing slot), and the like. The frequency domain resources may be expressed as Resource Elements (REs), resource Blocks (RBs), sub-channels (sub-channels), resource pools (resource pool), bandwidths (bandwidth), bandwidth parts (BWP), carriers (carriers), channels, interlaces (interlaces), and the like.

First stage SCI for scheduling PSSCH and second stage SCI indicating PSSCH. For example, the first level SCI may be SCI1-A, SCI1-B, or SCI1-C. SCI1-A may also be referred to as SCIFormat-A, SCI1-B may also be referred to as SCIFormat-B, SCI1-C may also be referred to as SCIFormat1-C, and the application is not limited in particular. The first stage SCI may indicate the type of second stage SCI on the PSSCH. For example, the second stage SCI may be of the type SCI2-A, SCI-2-B, SCI2-C or SCI2-D, etc.

Second level SCI for indicating subscriber identity related information, resource allocation information or some extended functionality. For example, a user collaboration function. For example, the second level SCI may be in the format of SCI2-A, SCI2-B, or SCI2-C. SCI2-A may also be referred to as SCIFormat-A, SCI2-B may also be referred to as SCIFormat-B, and SCI2-C may also be referred to as SCIFormat 2-C. The format of the second level SCI may also be that of a future developed SCI. For example, the second level SCI may be in the form of SCI2-D, SCI2-E, SCI2-F, SCI3-A, SCI3-B, SCI3-C, or the like, and the application is not limited thereto.

The functions and included fields of SCI2-A, SCI-B and SCI2-C are described below, respectively.

SCI2-a is used to decode the PSSCH, SCI2-a is used to transmit to a specific terminal device, and SCI2-a is mainly used for unicast scenarios. The fields included in SCI2-a are shown below. SCI2-a includes hybrid automatic repeat request process number (HARQ process number), new data indication (New data indicator), redundancy version (Redundancy version), resource identification (Source ID), destination identification (Destination ID), HARQ feedback enabled or disabled indication (HARQ feedback enabled/disabled indicator), transmission type indication (Cast type indicator), channel state information request (CSI request).

The hybrid automatic repeat request process number occupies 4 bits. The new data indication occupies 1 bit.

Redundancy versions occupy 2 bits, and the redundancy version is defined in detail with reference to table 7.3.1.1.1-2 in protocol 38.212.

The resource identifier occupies 8 bits, and the definition of the resource identifier is described in the related description of the 8.1 th item in the protocol [6, ts38.214 ].

The destination identifier occupies 16 bits, and the definition of the destination identifier is described in relation to item 8.1 of protocol [6, ts38.214 ].

The HARQ feedback enable or disable indication occupies 1 bit and is described with reference to 16.3 in protocol [5, ts38.214 ].

The transmission type indication occupies 2 bits, and the definition of the transmission type indication is described in Table 8.4.1.1-1 and related description in section 8.1 of protocol [6, TS38.214 ]. The transmission type indication is used to indicate unicast (unicasting), multicast (groupcast) or broadcast (broadcast).

The channel state information request occupies 1bit, and the definition of the channel state information is described in the 8.2.1 th item in the protocol [6, TS38.214] and the related description of the 8.1 th item in the protocol [6, TS38.214 ].

It follows that SCI2-a contains a field of 35 bits in length.

SCI2-B is used for decoding PSSCH and SCI2-B is used for transmitting to terminal devices of the same area identity. SCI2-B is mainly used for multicast scenarios. The fields included in SCI2-B are shown below. Specifically, SCI2-B includes a hybrid automatic repeat request process number, a new data indication, a redundancy version, a resource identification, a destination identification, a HARQ feedback enabled or disabled indication, a Zone identification (Zone ID), and a communication range requirement (Communication range requirement).

Wherein the hybrid automatic repeat request process number occupies 4 bits and the new data indication occupies 1 bit.

The HARQ feedback enable or disable indication occupies 1 bit and is defined in the description of item 16.3 of protocol [5, ts38.214 ].

The region identifier occupies 12 bits, and the definition of the region identifier is described in relation to item 5.8.11 in protocol [9, ts38.331 ].

The communication range requirement occupies 4 bits, and the communication range requirement is determined by higher layer signaling.

It follows that SCI2-B contains a field of 48 bits in length.

SCI2-C is used to decode the PSSCH and provide inter-user cooperation information or request inter-user cooperation information. SCI2-C is mainly used for unicast scenarios. The inter-user cooperation function is an optionally supported function, and specifically should be determined in conjunction with capability information of the terminal device. The fields included in SCI2-C are shown below. Specifically, SCI2-C includes a hybrid automatic repeat request process number, a new data indication, a redundancy version, a resource identification, a destination identification, a HARQ feedback enabled or disabled indication, a channel state information request, and a provisioning or request indication (provisioning/Requesting indicator).

The hybrid automatic repeat request process number occupies 4 bits and the new data indication occupies 1 bit.

The channel state information request occupies 1 bit, and the definition of the channel state information request is described in the 8.2.1 th item in the protocol [6, TS38.214] and the related description of the 8.1 th item in the protocol [6, TS38.214 ].

The offer or request indication occupies 1 bit. When the value of the provided or requested indication is 0, it means that SCI2-C is used to provide inter-UE cooperation information. When the value of the provided or requested indication is 1, it means that SCI2-C is used to request inter-UE cooperation information.

If the provided or requested indication has a value of 0, SCI2-C further includes fields, specifically, SCI2-C further includes a resource combination (Resource combinations), a reference slot position (REFERENCE SLOT LOCATION), a resource set type (Resource set type), and a minimum subchannel indication (Lowest subChannel indices).

Wherein the resource combination occupies And a number of bits.For the number of sub-channels in the resource pool,N _{rsv_period} is the number of elements in the resource reservation period list (sl-ResourceReserveP eriodList) of the higher layer signaling configuration. If the network device configures a side-uplink multi-reserved resource (sl-MultiReserveR esource) parameter for the terminal device, Y is the number of elements in a resource reservation period list (sl-ResourceReservePeriodList) configured by the higher layer signaling, otherwise, y=0.

Reference slot position occupancyAnd μ is a parameter related to the subcarrier spacing. For example, μ=log ₂ (SCS/15 kHz), SCS is the subcarrier spacing. The resource set type occupies 1 bit. When the value of the resource set type is 0, the preferred resource set is indicated. When the value of the resource set type is 1, a non-preferred resource set is indicated. Minimum subchannel indication occupancy

If the value of the provided or requested indication is 1, the SCI2-C further includes a Priority, a number of sub-channels (Number of subchannels), a resource reservation period (Resource reservation period), a resource selection window position (Resource selection window location), a resource set type (Resource set type), and Padding bits (Padding bits). Priority transaction occupies 3 bits, subchannel number occupiesAnd a number of bits. Resource reservation period occupancyAnd a number of bits. Resource selection window location occupancyAnd a number of bits. The resource set type occupies 1 bit. The terminal device may flush SCI2-C with padding bits such that the length of the SCI2-C is equal to the length of the SCI2-C when the value of the provisioning or request indication contained in the SCI2-C is 0. It is understood that when the value of the provided or requested indication in SCI2-C is 0, the length of SCI2-C is maximum and there is no padding.

Of course, the second stage SCI may also be SCI2-D, or SCI2-E, and the application is not particularly limited, and more forms of the second stage SCI may be specifically expanded in accordance with actual requirements. As the current demand for side-link positioning increases, SCI designed for side-link positioning functions is required. Therefore, how to design SCI for positioning is a considerable problem.

In one possible implementation, a new format of second level SCI is introduced. For example, the second level SCI may be in the form of SCI2-D, or may be otherwise named, and the application is not limited thereto. The format of the second level SCI may be indicated in the first level SCI as SCI2-D. SCI2-D can indicate PSSCH coding related information. I.e., SCI2-D is used to decode the PSSCH and the receive side uplink positioning reference signal (sidelinkpositioning REFERENCE SIGNAL, SL-PRS). Thereby enabling transmission of both data and positioning reference signals in one slot. The developers propose that SCI2-D integrates information included in SCI2-A, SCI2-B or SCI2-C, respectively, and superimposes the location related fields. I.e. SCI2-D can be used to implement data demodulation and positioning reference signal transceiving related functions. One possible implementation of the fields included in SCI2-D is shown below. As shown in table 2 below:

TABLE 2

It is known that SCI2-D includes at least a transmission type indication (Cast type indicator) and a channel state information request (CSI request), i.e., it can be considered that SCI2-D contains SCI2-a related information. The SCI2-D includes at least a Zone identification (Zone ID) and a communication range requirement (Communication range requirement), i.e., the SCI2-D can be considered to contain SCI2-B related information. The SCI2-D includes at least a field providing or requesting an indication or inter-user coordination (IUC) related information, e.g., an IUC information field providing or requesting an IUC information field, i.e., SCI2-D may be considered to contain SCI2-C related information. The provide IUC information field includes a resource combination (Resource combinations), a first resource location (First resource location), a reference slot location (REFERENCE SLOT LOCATION), a resource set type (Resource set type), and a minimum subchannel indication (Lowest subChannel indices). The request IUC information field includes Priority, number of subchannels (Number of subchannels), resource reservation period (Resource reservation period), resource selection window position (Resource selection window location), resource set type (Resource set type), and Padding bits (Padding bits).

As can be seen from the above description, the bit lengths of the signaling corresponding to SCI2-A, SCI-B and SCI2-C are different, and thus the bit lengths of the signaling corresponding to SCI2-D are also different. Therefore, additional configuration of the corresponding stuff bits is required.

Further, SCI2-C is signaling for an inter-user cooperation function, which requires the terminal device to support the inter-user cooperation function. If one terminal device does not support the inter-user collaboration function, the terminal device cannot calculate the length of SCI 2-C. As shown in fig. 6, the UE-a does not support the inter-user cooperation function, and the UE-B supports the inter-user cooperation function. When UE-A sends SCI2-D to UE-B, UE-A cannot calculate the length of SCI2-C, and UE-B can calculate the length of SCI 2-C. For UE-A, the maximum length of SCI2-D is the length of SCI2-D when it contains information about SCI 2-B. For UE-B, the maximum length of SCI2-D may be the length of SCI2-D when it contains information about SCI 2-C. Thus, there is an understanding bias of the length of SCI2-D by UE-A and UE-B, resulting in SCI decoding failure.

The application provides a corresponding technical scheme for the terminal equipment to determine the length of the filling bit in the first SCI according to the first information. The first SCI is associated with a positioning function, and the terminal device determines the length of the filler bits in the first SCI through the first information. Thereby realizing the design of SCI for positioning. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided. So that the calculation of the SCI length in the scenario of introducing data and positioning reference signals co-transmission is coupled with different characteristics. Thereby enabling coexistence of terminal devices supporting different capabilities and/or different characteristics.

In the present application,Refers to rounding up x. log ₂ (x) refers to the logarithm of x base 2.

In the present application, SCI2-A may also be expressed as SCI Format2-A, i.e., SCI2-A and SCI Format2-A express the same meaning. SCI2-B may also be denoted as SCI Format2-B, i.e. SCI2-B and SCI Format2-B express the same meaning. SCI2-C can also be expressed as SCI Format2-C, i.e., SCI2-C and SCI Format2-C express the same meaning. SCI2-D can also be expressed as SCI Format2-D, i.e., SCI2-D and SCI Format2-D express the same meaning. SCI2-E may also be expressed as SCI Format2-E, i.e., SCI2-E and SCI Format2-E express the same meaning. The application is not particularly limited.

The technical scheme of the application is described below in connection with specific embodiments.

Fig. 7A is a schematic diagram of an embodiment of a determining method and an information sending method according to the present application. Referring to fig. 7A, the method includes:

701. the network device sends the first information to the terminal device. Accordingly, the terminal device receives the first information from the network device.

Wherein the first information is used to determine the length of the filler bits in the first SCI.

The first SCI is associated with a positioning function, in other words, the first SCI may indicate control information related to positioning reference signal resources, or the first SCI is related to positioning reference signal resources. Optionally, the first SCI includes a positioning reference signal resource indication (SL PRS resource indication) field and/or a positioning reference signal transmission request (SL PRS transmission request) field. For example, the positioning reference signal resource indication field may occupy log ₂N_PRS. Wherein N _PRS is the number of positioning reference signal resources in the resource pool. The resource pool may be a positioning resource pool or a communication resource pool. The resource pool includes communication resources and positioning reference signal resources. The positioning reference signal transmission resource request field may occupy 1 bit. Optionally, the first SCI is further used for indicating control information related to data transmission, or the first SCI is further related to a data transmission function. For example, the control information related to data transmission includes a field contained in SCI2-A, SCI-2-B or SCI 2-C. The fields contained in SCI2-A, SCI-2-B or SCI2-C may be referred to in the relevant description of the technical terms above.

Optionally, the first SCI is a second stage SCI. For example, the format of the first SCI is the first format. The first format may be SCI2-D. It should be noted that SCI2-D may be named as other names, and the present application is not limited thereto.

For a detailed description of the first information, refer to step 702.

Optionally, the embodiment shown in fig. 7A further includes step 701a.

701A, the network device sends resource pool configuration information to the terminal device. Correspondingly, the terminal device receives the resource pool configuration information from the network device.

Alternatively, the first information in step 701 may be carried in the resource pool configuration information in step 701a, and then steps 701a and 701 are performed simultaneously. Either step 701a is performed before step 701 is performed, or step 701 is performed before step 701a is performed, and the present application is not limited thereto.

702. The terminal device determines the length of the filler bits in the first SCI based on the first information.

Some possible implementations of the first information are described below. The application is applicable to other implementations, and the application is not limited in particular.

Implementation 1. The first information comprises the total length of the first SCI.

In this implementation 1, the step 702 specifically includes the terminal device determining the length of the padding bits in the first SCI according to the total length of the first SCI. For example, the first information indicates that the total length of the first SCI is 48 bits, and the terminal device supplements the first SCI with the total length of the first SCI. I.e. the terminal device adds padding bits after the signaling field of the first SCI until the total length of the first SCI is 48 bits. For another example, the first information indicates that the total length of the first SCI is 128 bits, and the terminal device supplements the first SCI with the total length of the first SCI. I.e. the terminal device adds padding bits after the signaling field of the first SCI until the total length of the first SCI is 128 bits.

Optionally, the length of the filler bits is related to the total length of the first SCI and the number of positioning reference signal resources in the resource pool.

Optionally, the first SCI includes a first field including a filler bit field and a field associated with the SCI in the second format. The pad bit field includes pad bits, the first field having a length of M. M is related to the total length of the first SCI and the number of positioning reference signal resources in the resource pool.

The fields related to SCI in the second format may be understood as one or more fields contained in SCI in the second format. The first SCI contains fields related to SCI in the second format. Alternatively, the first SCI may contain fields related to the SCI in the second format. The second format includes at least one of SCI2-A, SCI2-B, or SCI2-C. Optionally, the second format may further include a first level SCI and/or a second level SCI for future expansion. For example, the second format further includes at least one of SCI2-E, SCI2-F, SCI3-A, SCI3-B, SCI3-C, SCI1-B, or SCI1-C. Alternatively, the second format includes any first level SCI and/or second level SCI.

In one possible implementation, M satisfies the following condition:

Where N _SCI-2D is the total length of the first SCI, N _PRS is the number of positioning reference signal resources in the resource pool, which may be configured by a higher layer. For example, the base station may be configured through RRC signaling, or the positioning server may be configured through signaling. Or the number of the reference signal resources may be calculated according to the configuration of the resource pool. For example, the number of reference signal resources is calculated according to at least one configuration parameter of the available OFDM symbols in one slot, the number of OFDM symbols available for reference signal transmission, the Comb fraction (Comb) of the reference signal, the number of symbols occupied by PSCCH channels, whether there is PSFCH, and the pilot pattern of the demodulation reference signal. Refers to rounding log ₂N_PRS up. K is an integer. For example, K may have a value of 0,1,2,3,4,5,6,7,8, or 10. Optionally, K is determined by the SCI block type in the first SCI or by the length of a format type indication field in the first SCI, the format type indication field being used to indicate the SCI in the second format. Or based on the length of the positioning reference signal transmission request (SLPRStransmissionrequest) field, the application is not particularly limited. Of course, K may be greater than 10.

One possible implementation of the fields comprised by the first SCI is described below.

Optionally, the first SCI includes a positioning reference signal resource indication (SL PRS resource indication) field, a positioning reference signal transmission request (SL PRS transmission request) field, an embedded SCI block type (Embedded SCI payload block type) field, and an embedded SCI block (Embedded SCI payload block). The embedded SCI block includes a filler bit field and a field associated with the SCI in the second format.

For example, the number of bits occupied by the positioning reference signal resource indication field isThe positioning reference signal transmission request field occupies 1 bit. For example, the value of the positioning reference signal transmission request field is 1, which indicates that the positioning reference signal transmission is requested. The embedded SCI block type field occupies 3 bits. The embedded SCI block field occupies M bits. The value of the embedded SCI block type field is shown in table 3 below:

TABLE 3 Table 3

It follows that the SCI blocks embedded in the first SCI will be filled until the length of the first SCI is the total length of the first SCI configured by the network device.

In another possible implementation, the first information is carried in the resource pool configuration information, and the length of the filler bits is related to the number of positioning reference signal resources in the resource pool, independent of the total length of the first SCI.

Optionally, the first information is carried in resource pool configuration information, positioning reference signal configuration information, PSSCH configuration information, or PSCCH configuration information. For example, the first information is carried in configuration information associated with the shared resource pool. The shared resource pool may be used for transmitting data as well as for transmitting reference signals. The reference signals may include at least one of SL-PRS, side-downlink channel state information reference signals (SIDELINK CHANNEL STATE information REFERENCE SIGNALS, SLCSI-RS), side-downlink phase tracking reference signals (SIDELINK PHASE-TRACKING REFERENCE SIGNAL, SLPT-RS), side-downlink demodulation reference signals (sidelink demodulatin REFERENCE SIGNAL, SLDMRS), side-downlink synchronization signals/physical layer broadcast channel blocks (sidelink synchronization signal/physical broadcast channel block, SLSSB), side-downlink primary synchronization signals (sidelinksynchronization signal block, SLPSS), side-downlink synchronization signals (sidelinksynchronization signal, SLSS), etc., or other reference signals on non-side links.

For example, the resource pool configuration information includes first information. The specific resource pool configuration information is as follows:

The first information includes a total length of the first SCI. As can be seen from the above-mentioned resource pool configuration information, the total Length of the first SCI can be indicated by the cell sl-SCI-Format-2D-Length in the resource pool configuration information. Wherein P is greater than 48 and Q is greater than P. Alternatively, P equals 128, or P equals 56. For example, the sl-SCI-Format-2D-Length may be 48 or 128. Thereby enabling an indication of the total length of the first SCI.

For example, the PSSCH configuration information includes first information. Specific PSSCH configuration information is as follows:

The first information includes a total length of the first SCI. As can be seen from the above PSSCH configuration information, the total Length of the first SCI may be indicated by the cell sl-SCI-Format-2D-Length-r18 in the PSSCH configuration information. Wherein P is greater than 48 and Q is greater than P. Alternatively, P equals 128, or P equals 56. For example, sl-SCI-Format-2D-Length-r18 may have a value of 48 or 128. Thereby enabling an indication of the total length of the first SCI.

The specific procedure of the terminal device determining the length of the filler bits in the first SCI according to the total length of the first SCI is described below.

The terminal device determines the total length of the first SCI according to the first information. The terminal device then determines the length of the SCI related field of the second format that the first SCI needs to include and the length of the positioning function related field that the first SCI includes. The terminal device then determines the length of the padding bits in the first SCI based on the total length of the first SCI, the length of the SCI related fields of the second format that the first SCI needs to include, and the length of the positioning function related fields that the first SCI includes. For example, the length of the filler bits in the first SCI is equal to the difference between the total length of the first SCI and the first value. The first value is the sum of the length of the SCI related field of the second format that the first SCI needs to include and the length of the positioning function related field that the first SCI includes.

For example, the total length of the first SCI is 50 bits, and the length of the field related to the positioning function included in the first SCI is 2. As can be seen from the length of the field contained in SCI2-a, if the first SCI contains the field contained in SCI2-a, the first SCI includes padding bits. The length of the filler bits in the first SCI is equal to the difference between the total length of the first SCI and the first value. The first value is the sum of the length of the field contained in SCI2-a and the length of the field associated with the positioning function contained in the first SCI. For another example, the total length of the first SCI is 50 bits, and the length of the field related to the positioning function included in the first SCI is 2. As can be seen from the length of the field contained in SCI2-B, if the first SCI contains the field contained in SCI2-B, the first SCI does not include padding bits. For example, SCI2-B contains fields that occupy the first 48 bits of the first SCI, and the fields associated with the positioning function contained in the first SCI occupy the last two bits of the first SCI.

It follows that for the calculation problem of the length of the filler bits in the first SCI, the network device configures the total length of the first SCI for the terminal device through the first information. When transmitting the first SCI, the terminal equipment transmitting the positioning reference signal in the resource pool adds corresponding filling bits in the first SCI based on the total length of the first SCI indicated by the first information. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided. And ensuring the normal operation of the positioning reference signal and the data during simultaneous transmission. Thereby enabling coexistence of terminal devices supporting different capabilities and/or different characteristics.

Implementation 2. First information includes the length of the filler bits in the first SCI.

Optionally, the first information includes a length of the filler bits in the first SCI when the first SCI contains SCI related information in the second format. Optionally, the second format includes at least one of SCI2-A, SCI2-B, or SCI2-C. Optionally, the second format may further include a first level SCI and/or a second level SCI for future expansion. For example, the second format further includes at least one of SCI2-F, SCI3-A, SCI3-B, SCI3-C, SCI-B, or SCI1-C. Alternatively, the second format includes any first level SCI and/or second level SCI. The SCI related information in the second format may be understood as a field contained in the SCI in the second format. The SCI related information in the second format may be understood as a field contained in the SCI in the second format. That is, the first information includes a field included in the SCI of the second format when the first SCI includes the first bit.

For example, the terminal device does not support the inter-user cooperation function, and the first information may include a length of a filler bit in the first SCI when the first SCI includes SCI2-a related information. The terminal device may know the length of the information related to SCI2-a, i.e. the length of the field included in SCI2-a, and reference may be made specifically to the related description in the foregoing technical terms. The first SCI contains the length of the information or field related to the positioning function. The terminal device determines the length of the filler bits in the first SCI when the first SCI contains SCI2-a related information through the first information. The terminal device can thus determine the total length of the first SCI.

Alternatively, the terminal device may determine the length of the filler bits in the first SCI when the first SCI contains SCI2-B related information, based on the total length of the first SCI, the length of the SCI2-B related information, and the length of the positioning function related information or field contained in the first SCI. Or the first information further comprises a length of a filler bit in the first SCI when the first SCI contains SCI2-B related information. That is, for a terminal device that does not support the inter-user cooperation function, the first information may include a length of a stuff bit in the first SCI when the first SCI includes SCI2-a related information, or the first information may include a length of a stuff bit in the first SCI when the first SCI includes SCI2-B related information, or the first information may include a length of a stuff bit in the first SCI when the first SCI includes SCI2-a related information, and a length of a stuff bit in the first SCI when the first SCI includes SCI2-B related information.

For another example, the terminal device supports an inter-user collaboration function, and the first information may include a length of a filler bit in the first SCI when the first SCI includes SCI2-a related information. The terminal device may know the length of the information related to SCI2-a, i.e. the length of the field included in SCI2-a, and reference may be made specifically to the related description in the foregoing technical terms. The terminal device determines the length of the padding bits in the first SCI when the first SCI contains SCI2-a related information, based on the first information. The terminal device can thus determine the total length of the first SCI.

Alternatively, the terminal device may determine the length of the filler bits in the first SCI when the first SCI contains SCI2-B related information, based on the total length of the first SCI, the length of the SCI2-B related information, and the length of the positioning function related information or field contained in the first SCI. The terminal device may determine the length of the filler bits in the first SCI when the first SCI contains SCI2-C related information based on the total length of the first SCI, the length of the SCI2-C related information, and the length of the positioning function related information or field contained in the first SCI. That is, for a terminal device supporting an inter-user cooperation function, the first information may include a length of a filler bit in the first SCI when the first SCI contains SCI2-A, SCI-2B or SCI2-C related information. Or the first information may include a length of the filler bits in the first SCI when the first SCI contains SCI2-a related information and a length of the filler bits in the first SCI when the first SCI contains SCI-2B related information. Or the first information may include a length of the filler bits in the first SCI when the first SCI contains SCI2-a related information and a length of the filler bits in the first SCI when the first SCI contains SCI-2C related information. Or the first information may include a length of the filler bits in the first SCI when the first SCI contains SCI-2B related information and a length of the filler bits in the first SCI when the first SCI contains SCI-2C related information. Or the first information includes a length of a filler bit in the first SCI when the first SCI contains SCI2-a related information, a length of a filler bit in the first SCI when the first SCI contains SCI-2B related information, and a length of a filler bit in the first SCI when the first SCI contains SCI-2C related information.

Optionally, the first information is carried in resource pool configuration information, positioning reference signal configuration information, PSSCH configuration information, or PSCCH configuration information. For example, the resource pool configuration information includes the length of the filler bits in the first SCI when the first SCI contains SCI related information in the second format. For example, the resource pool configuration information may be as follows:

As can be seen from the above-mentioned resource pool configuration information, the cell sl-SCI-2-a-Format-PaddingBits-Length indicates that when the first SCI contains SCI2-a related information, the Length of the filler bit in the first SCI is, for example, 20. The cell sl-SCI-2-B-Format-PaddingBits-Length indicates that when the first SCI contains SCI2-B related information, the Length of the filler bits in the first SCI is, for example, 10. The cell sl-SCI-2-C-Format-PaddingBits-Length indicates the Length of the filler bit in the first SCI, e.g., the Length of the filler bit is 5, when the first SCI contains SCI2-C related information.

In the above implementation 2, the network device configures the length of the filler bit in the first SCI for the terminal device through the first information. When transmitting the first SCI, the terminal equipment transmitting the positioning reference signal in the resource pool adds corresponding filling bits in the first SCI based on the length of the filling bits indicated by the first information. Thereby enabling coexistence of terminal devices supporting different capabilities or different characteristics.

Implementation 3. The first information includes SCI format information indicating SCI of a third format. Optionally, the step 702 specifically includes the terminal device determining the length of the padding bits in the first SCI based on the SCI in the third format.

The SCI of the third format is used for the terminal device to calculate the length of the filler bits in the first SCI. Optionally, the third format includes SCI2-A, SCI2-B, or SCI2-C. Alternatively, the third format may be the first level SCI or a second level SCI extended in the future. For example, the third format may include SCI2-F, SCI3-A, SCI3-B, SCI3-C, SCI1-B, or SCI1-C. Alternatively, the third format includes either the first level SCI or the second level SCI.

For example, the third format is SCI2-C, and then the terminal device calculates the length of the filler bits in the first SCI with reference to SCI 2-C. Specifically, the terminal device determines the length of the field contained in SCI 2-C. The first SCI includes fields related to positioning functions, fields related to SCI in the second format, and other fields. For example, the other fields include a format type indication field for indicating SCI of the second format. The terminal device determines the length of the filler bits in the first SCI based on the total length of the first SCI, the length of the fields related to the positioning function, the length of the fields related to the SCI of the second format contained in the first SCI, and the lengths of the other fields.

In the above implementation 3, the network device configures SCI format information for the terminal device through the first information. When transmitting the first SCI, the terminal equipment transmitting the positioning reference signal in the resource pool adds corresponding filling bits in the first SCI based on the SCI of the third SCI format indicated by the SCI format information. Thereby enabling coexistence of terminal devices supporting different capabilities or different characteristics.

Implementation 4. The first information comprises first indication information indicating a formula for calculating a total length of the first SCI.

Optionally, the formula for calculating the total length of the first SCI is the first formula or the second formula.

The first formula is associated with a first value, the first value being not less than 48. Alternatively, the first formula may be expressed as:

L=48+d+e (2)

Where L is the total length of the first SCI and d is the length of the location function related field in the first SCI. For example, d is 1 or 2.e is an integer greater than 0. Alternatively, 48 bits is the length of the field that SCI2-B contains. The value of e is determined by the type of SCI block in the first SCI or by the length of the format type indication field in the first SCI. The format type indication field is used to indicate SCI of the second format. Or determined according to the length of the positioning reference signal transmission request field, and the present application is not limited thereto. For the second format, refer to the related description above. For example, the format type indication field has a length of 3 bits, and e may take on a value of 3.

The second formula is related to the second, third, fourth and fifth values a, b and c.

Wherein the second value is not less than 41. For the number of sub-channels in the resource pool,N _{rsv_period} is the number of elements in the resource reservation period list (sl-ResourceReserveP eriodList) of the higher layer signaling configuration. If the network device configures a side-uplink multi-reserved resource (sl-MultiReserveR esource) parameter for the terminal device, Y is the number of elements in a resource reservation period list (sl-ResourceReservePeriodList) configured by the higher layer signaling, otherwise, y=0.Μ is a parameter related to subcarrier spacing. For example, the system bandwidth divided by the subcarrier spacing equals 2 ^μ.

Alternatively, the second formula may be expressed as:

L=41+a+b+c+d+e (3)

where L is the total length of the first SCI and d is the length of the location function related field in the first SCI. e is an integer greater than 0. For e, please refer to the related description, and the description is omitted here.

For the first formula, it may be applied to a terminal device that does not support the inter-user collaboration function, and that is capable of identifying SCI2-a and SCI2-B, or calculating the length of the field included in SCI2-a and the length of the field included in SCI 2-B. However, SCI2-C cannot be identified, nor can the length of the fields contained in SCI2-C be calculated. For the terminal device, the first SCI sent by the terminal device contains SCI2-A related information or SCI2-B related information. SCI2-a related information can be understood as a field contained in SCI 2-a. SCI2-B related information can be understood as a field contained in SCI 2-B. As is clear from the relevant description of the technical terms, the length of the field comprised by SCI2-a and the length of the field comprised by SCI2-B are respectively shorter than the length of the field comprised by SCI2-C, and thus the total length of the first SCI determined by the terminal device through the first formula is also smaller. For the second formula, it may be applied to a terminal device supporting an inter-user cooperation function, where the terminal device can calculate the length of the field included in SCI2-a, the length of the field included in SCI2-B, and the length of the field included in SCI 2-C. For the terminal device, the first SCI transmitted by the terminal device may contain SCI2-A related information, SCI2-B related information, or SCI2-C related information. SCI2-a related information can be understood as a field contained in SCI 2-a. SCI2-B related information can be understood as a field contained in SCI 2-B. SCI2-C related information can be understood as a field contained in SCI 2-C. The total length of the first SCI, as determined by the second formula, is also larger by the terminal device.

It should be noted that, the first formula and the second formula may be preconfigured in the terminal device, or configured by the network device for the terminal device through a higher layer signaling, or defined in a communication protocol, and the application is not limited specifically.

Optionally, the first information is carried in resource pool configuration information. For example, the resource pool configuration information includes first indication information for indicating a formula for calculating the total length of the first SCI. For example, the resource pool configuration information is as follows:

As can be seen from the above resource pool configuration information, the first indication information is the cell sl-SCI-Format-2D-Length in the resource pool configuration information, and the value of the cell sl-SCI-Format-2D-Length is the first Formula (Formula 1) or the second Formula (Formula 2). For example, the value of the cell sl-SCI-Format-2D-Length is a first Formula (Formula 1), and the terminal device calculates the total Length of the first SCI by using the first Formula. The terminal device then determines the length of the padding bits in the first SCI based on the total length of the first SCI, the length of the SCI related field of the second format that the first SCI needs to include, the length of the positioning function related field included in the first SCI, and the length of the format type indication field. For another example, the value of sl-SCI-Format-2D-Length is the second Formula (Formula 2). For the format type indication field, refer to the related description above. The terminal device calculates the total length of the first SCI using the second formula. The terminal device then determines the length of the padding bits in the first SCI based on the total length of the first SCI, the length of the SCI related field of the second format that the first SCI needs to include, the length of the positioning function related field included in the first SCI, and the length of the format type indication field.

Optionally, the resource pool configuration information may also be as follows:

As can be seen from the above resource pool configuration information, the first indication information is the cell sl-SCI-Format-2D-Length in the resource pool configuration information, and the value of the cell sl-SCI-Format-2D-Length is Short (Short) or Long (Long). Wherein Short (Short) indicates a first formula and Long (Long) indicates a second formula.

Specifically, the terminal device determines a formula for calculating the total length of the first SCI according to the first information. Then, the terminal device calculates the total length of the first SCI by the formula indicated by the first information. The first SCI includes a length of a SCI-related field of the second format that the first SCI needs to include, a length of a positioning function-related field that the first SCI includes, and a length of a format type indication field. The terminal device then determines the length of the padding bits in the first SCI based on the total length of the first SCI, the length of the SCI related field of the second format that the first SCI needs to include, the length of the positioning function related field included in the first SCI, and the length of the format type indication field.

For example, the terminal device determines the total length of the first SCI by a first formula. If the first SCI contains SCI2-A related information, the first SCI includes padding bits. If the first SCI contains SCI2-B related information, the first SCI does not include filler bits. For another example, the terminal device determines the total length of the first SCI by the second formula. If the first SCI contains SCI2-A or SCI2-B related information, the first SCI includes padding bits. And if the first SCI contains SCI2-C related information, the first SCI does not include padding bits.

As is known from the above-described implementation 4, the network device configures the terminal device with a formula for calculating the total length of the first SCI through the first information. When transmitting the first SCI, the terminal equipment transmitting the positioning reference signal in the resource pool calculates the total length of the first SCI according to the formula, and adds corresponding filling bits in the first SCI based on the total length of the first SCI. The problem of deviation of understanding of the length of the first SCI by different terminal devices is avoided. Therefore, the decoupling of the positioning characteristics and the cooperation functions among users is realized, and the decoding failure of the first SCI is avoided. And ensuring the normal operation of the positioning reference signal and the data during simultaneous transmission.

Optionally, the step 701 shows that the network device configures the first information for the terminal device by means of signaling configuration. In practical applications, the first information may be preconfigured in the terminal device, which is not limited by the present application. For example, the first information is already preconfigured in the terminal device at the time of shipment.

It should be noted that, alternatively, when the length of the padding bit of the first SCI is 0 or a negative number, the terminal device truncates and transmits the first SCI. For example, when the length of the padding bit of the first SCI is-2, it means that the length of the field originally included in the first SCI exceeds the total length of the specified first SCI, that is, exceeds 2 bits. The terminal device may truncate the excess 2 bits in the first SCI and send the first SCI.

Optionally, the network device generates the first information according to the capability information of the terminal device and the capability information of other terminal devices in the resource pool. The capability information of the terminal device includes whether the terminal device supports an inter-user cooperation function. The capability information of other terminal devices in the resource pool includes whether the other terminal devices support the inter-user collaboration function. For example, if the terminal devices in the resource pool all support the inter-user collaboration function, the total length of the first SCI indicated by the first information may be the total length when the first SCI contains SCI2-C related information. The terminal equipment in the resource pool uniformly determines the length of the filling bit in the first SCI based on the total length of the first SCI. The problem that the terminal equipment in the resource pool has deviation to the length understanding of SCI is avoided. Thereby, the terminal equipment in the resource pool can perform user cooperation through the first SCI. As another example, as shown in fig. 6, if one or more terminal devices exist in the resource pool and do not support the inter-user cooperation function, the total length of the first SCI indicated by the first information may be the total length when the first SCI includes SCI2-B related information. The terminal equipment in the resource pool uniformly determines the length of the filling bit in the first SCI based on the total length of the first SCI. Thereby avoiding the problem that the terminal equipment in the resource pool has deviation to the understanding of the length of SCI. So that the calculation of the SCI length in the scenario of introducing data and positioning reference signals co-transmission is coupled with different characteristics. Thereby enabling coexistence of terminal devices supporting different capabilities and/or different characteristics.

The application also provides the following scheme, and the scheme is described below.

The design of the second stage SCI has been discussed and we have the following related ideas.

View 1. SCI signaling in shared resource pool. Specifically, one provides a new second level SCI format, how to instruct the new second level SCI format.

View 2. In the shared resource pool, the SL-PRS, the associated PSCCH and the PSCCH scheduled by the PSCCH are located in the same slot. PSSCH is used for the second stage SCI and SL-SCH.

In the shared resource pool, rel-18 Rx UE needs to be able to distinguish whether the first level SCI is associated with PSSCH-only transmission (legacy transmission) or with transmission of the SL-PRS multiplexed PSSCH. The presence of SL-PRS multiplexed with PSSCH can be indicated by the new second level SCI format, SCI2-D.

In our view, the existing field in SCI-1A can be used to indicate SCI2-D without changing the reserved bits in SCI-1A.

For the shared resource pool, the new format of the second level SCI supporting PSSCH and SL-PRS transmissions is indicated by the second level SCI format field in SCI 1.

The content of SCIs associated with PSSCH and SL-PRS transmissions has been discussed, including whether the data and SL-PRS transmissions share a property type (THE CAST TYPE), destination ID, and resource ID, depending on whether the Rx UEs of the SL-SCH carried in the PSSCH and SL-PRS are identical.

If the Rx UEs of the SL-SCH carried in the PSSCH and the SL-PRS are different, the type of property (THE CAST TYPE), destination ID, and resource ID need to be indicated, which will result in an increase in the length of SCI 2-D.

In this scenario, if different Rx UEs are supported for data and SL-PRS transmissions, when the PSSCH and SL-PRS respectively correspond to the same Rx UE, it is necessary to indicate the type of characteristics employed for both transmissions (THE CAST TYPE), destination ID (destination ID), and resource ID (source ID).

If a Tx UE wants to transmit data to Rx UE1 and SL-PRS to Rx UE2, PSSCH can be transmitted in one slot and SL-PRS can be transmitted in another slot without indicating data and SL-PRS transmission of a different Rx UE through SCI 2-D.

Different second level SCI formats may support the transmission of data. Such as SCI2-A, SCI2-B or SCI2-C. The SCI2-D associated with PSSCH and SL-PRS transmissions need to include a field in SCI2-A, a field in SCI2-B, or a field in SCI2-C. In addition, SCI2-D needs to include SL-PRS related fields. Therefore we consider that SCI2-D comprises two parts of signaling.

First part, parameters of PSSCH transmission in a conventional side-uplink communication system. Second part, parameters of SL-PRS transmission.

In the shared resource pool, the transmission of the SL-PRS needs to support two levels of resource granularity, namely first a subset of the subchannels, and then SL-PRS dedicated resources. To increase the flexibility of the resource allocation of the SL-PRS, information associated with the SL-PRS resources, namely SL-PRS resource indications, may be indicated in the SCI. To allow one UE to request the transmission of SL-PRS from another UE, a SL-PRS request field may be included in the SCI. Since the priority and resource reservation period of the SL-PRS may be the same as the SL-SCH carried in the PSSCH, this information is already provided in the first, SCI, and these fields need not be included in SCI 2-D.

The priority of the SL-PRS and/or the priority of the PSSCH may be communicated from the MAC layer of the transmitter of the UE to layer 1. A single priority may be indicated in the SCI, which is the higher of the priority of the SL-PRS and the priority of the PSSCH. Thus, the priority indicated by SCI-1 can be shared to PSSCH and SL-PRS.

A single priority is indicated in SCI-1. For the Tx UE, the priority is set to be the higher priority of the priority of SL-PRS and the priority of PSSCH. For Rx UEs, the priority of SL-PRS and the priority of PSSCH may be treated the same.

In order to support transmission of data and SL-PRS in one slot, SCI fields for data resource transmission/reservation and SL-PRS transmission/reservation need to be included in SCI 2-D. In particular as described above. Specific English translation into ：To support the both the data and SL PRS transmission within a slot,the format 2-D needs to contain both SCI fields for data resource transmission/reservation and for SL PRS transmission/reservation as illustrated in the previous sections.

SCI2-D contains three possible SCI formats, SCI2-A, SCI-B or SCI2-C, so the length of all SCI fields in SCI2-D may be different. Padding bits are necessary to ensure that the length of SCI2-D is constant or fixed. English descriptions corresponding to the above are as follows ：There are three different possible SCI format 2-A/2-B/2-C to be contained with the format 2-D,hence the length of the all the SCI fields could be different.Padding bits are necessary to make sure that the length of the 2-D is constant/fixed.

We note that the length of SCI2-A is 41, the length of SCI2-B is 48, the length of SCI2-C is greater than 48, and the length of SCI2-C depends on the resource pool configuration. For example, the number of subchannels. Notably, the maximum length of SCI2-C can be up to 122 bits. English descriptions corresponding to the above are as follows ：We note that the bit length is 41for format 2-A and 48for format 2-B.The bit length of format 2-C is larger than 48and depends on the resource pool configurations,such as the number of subchannels.It is noted that the maximum length of the format 2-C could reach 122bits.

The problem arises that when SCI2-D contains SCI2-a or SCI2-B, etc., the length of SCI2-D containing SCI2-C should be used as a baseline for determining the padding bit length ：The problem arises,should the length of 2-D containing 2-C be used as the baseline for determining the length of padding bits while 2-D contains other formats such as 2-A and 2-B?

We consider the fact that this is not the case. The reason is described in detail below. First, SCI2-C is used for inter-user collaboration, an optional UE function for legacy R17. But SL positioning is for the UE function or feature of R18. English descriptions corresponding to the above are as follows ：In our opinion,it is not.The reasons are elaborated on in the following.First,format 2-C is used with the inter-UE coordination functions,which is an optional UE feature set for legacy R17 UEs.However,SL positioning is a function/feature aiming at R18 UEs.

This means that the positioning UE of R18 may not support the inter-UE cooperation function of R17. Thus, the positioning UE of R18 may recognize SCI2-C and how to calculate the length of SCI 2-C. English descriptions corresponding to the above are as follows ：This means that a R18 positioning UE might not support R17 IUC functions.Hence,the R18 UE might not be aware of the format 2-C and how to calculate the length of 2-C.

On the other hand, in the scenario where UE-A and UE-B transmit, none of them support inter-user collaboration, they never transmit SCI2-D containing SCI 2-C. Therefore, they do not have to fill SCI2-D to a length that contains SCI2-C, otherwise the transmission efficiency would be greatly reduced. Because the length of SCI2-C may be much greater than the length of SCI2-B, i.e., 122 is much greater than 48. English descriptions corresponding to the above are as follows ：On the other hand,considering the case that a R18 UE named UE-A is transmitting SL PRS to another R18 UE named UE-B.Both of them do not support IUC function/feature.They will never transmit SCI 2-D while containing the content of 2-C.Hence,it is not necessary for them to padding the SCI format 2-D to the length of that 2-D contains 2-C.Otherwise,the transmission efficiency would be greatly degraded as that the length of 2-C could be much larger then that of 2-B,i.e.,122>>48.

As shown in fig. 7B, four scenarios for SL-PRS transmission between R18 UEs are shown. In scenario 1, both the Rx UE and the Tx UE support the inter-user collaboration function. In scenario 2, the Tx UE supports the inter-user cooperation function, but the Rx UE does not support the inter-user cooperation function. In scenario 3, the Tx UE does not support the inter-user collaboration function and the Rx UE supports the inter-user collaboration function. In scenario 4, neither Tx UE nor Rx UE support inter-user collaboration functionality. English descriptions corresponding to the above are as follows ：As illustrated in Figure7B,there are four different cases of SL-PRS transmission between R18 UEs.In Case 1,both the Rx and Tx UE support IUC;In Case 2,the Tx UE support but the Rx UE do not support IUC;In Case 3,the Rx UE support but the Tx UE do not support IUC;In Case 4,both the Tx and Rx UE do not support IUC.

We note that only in scenario 1, SCI2-D containing SCI2-C related fields can be transmitted. Furthermore, it is difficult to determine the length of the padding bits of the UE according to whether the terminal device supports inter-user cooperation. For example, in scenario 2, the Tx UE does not know whether the Rx UE supports inter-user collaboration, if the Tx UE populates SCI2-D according to the length of SCI 2-C. When SCI2-D including SCI2-a or SCI2-B is actually transmitted, decoding failure on the Rx UE side will be caused. English descriptions corresponding to the above are as follows ：It is noted that only in Case 1,the format 2-D containing the fields of 2-C could be possibly transmitted.Further,it is hard to decide the length of padding bits for a UE according to whether it support IUC or not.For example,in Case 2,the Tx UE does not know whether the Rx UE support IUC or not.If the Tx UE padding the 2-D based on the length of containing 2-C,while actually 2-D containing 2-A/2-Bis transmitted,it will cause decoding failure at the Rx UE side.

In view of the above, to ensure proper decoding and spectral efficiency, we support the length of SCI2-D is indicated by higher layers to ensure that all Tx and Rx UEs have the same understanding of the length of SCI2-D, whether or not Tx and Rx UEs support inter-user cooperation functions. The inter-user collaboration function of R17 and the location function or feature of R18 may be decoupled. English descriptions corresponding to the above are as follows ：Considering the above cases,to ensure correct decoding and spectral efficiency,we support that the length of the SCI format 2-D is indicated by higher layer to ensure that all the Txand Rx UE have a same understanding irrespective whether support IUC or not.By this method,the R17 IUC feature and R18 positioning feature could be decoupled.

Furthermore, the method may maintain compatibility with future protocol versions. If a new SCI for user data transfer is introduced and included in the SCI2-D, the length of the SCI2-D may be greater. Thus, complexity can be reduced and spectral efficiency improved by indicating the total length of SCI 2-D. English descriptions corresponding to the above are as follows ：What is more,this method keeps forward compatibility for the future releases.If a new SCI format for data transmitting is introduced and support to be contained within 2-D,there will be more possible lengths of the format 2-D.By indicating the total length of the 2-D could reduce complexity and improve spectral efficiency.

The length of SCI2-D may be configured or preconfigured. The UE calculates and appends padding bits according to the total length. English descriptions corresponding to the above are as follows ：The bit length of the SCI format 2-D is(pre-)configured.Based on the total bit length,the padding bits shall be calculated and appended.

Optionally, the embodiment shown in fig. 7A further includes steps 703 to 704. Steps 703 to 704 may be performed after step 702.

703. The terminal device generates the first SCI according to the length of the filler bits in the first SCI.

Specifically, the terminal device supplements the first SCI according to the length of the padding bits in the first SCI. I.e. the terminal device adds padding bits of the length after the signaling field of the first SCI. For example, the first SCI includes a positioning function related field included in the first SCI, a data transmission related field included in the first SCI (i.e., a second format related field included in the first SCI), a format type indication field (for indicating the second format SCI), and a filler bit field. The pad bit field includes the pad bit.

704. The terminal device sends the first SCI to other terminal devices.

Optionally, the embodiment shown in fig. 7A further includes steps 705 to 706. Steps 705 to 706 may be performed after step 704.

705. Other terminal equipment demodulates the first SCI and measures the positioning reference signal to obtain a measurement result.

For example, the terminal device transmits the first SCI, so that the location reference signal resource transmitted by the terminal device is indicated through the first SCI. And the other terminal equipment receives the first SCI and demodulates the content in the first SCI. For example, other terminal devices determine the positioning reference signal resource and receive the positioning reference signal corresponding to the positioning reference signal resource. Then, other terminal equipment measures the positioning reference signal to obtain a measurement result. Optionally, the measurement includes at least one of time information, energy information, angle information, or phase information. For example, the time information includes a time of arrival (TOA), the energy information includes a reference signal received power (REFERENCE SIGNAL RECEIVING power, RSRP), and/or a reference signal path received power (REFERENCE SIGNAL RECEIVING PATH power, RSRPP). The angle information includes angle of arrival (AoA) phase information including carrier phase (CARRIER PHASECA), and head-path phase. Thereby realizing the relative positioning between the terminal equipment and other terminal equipment.

706. And the other terminal equipment sends the measurement result to the terminal equipment. Correspondingly, the terminal device receives measurement results from the other terminal devices.

It should be noted that, optionally, before step 704, the terminal device sends the first stage SCI. The first stage SCI is used to indicate the type of first SCI. For example, the terminal device transmits SCI1-A indicating that the type of the first SCI is SCI2-D.

The embodiment shown in fig. 7A above describes the technical solution of the present application by taking the process of configuring the first information by the network device as a terminal device as an example. In practical applications, the network device sends the first information to other terminal devices in the resource pool in a similar manner, which will not be described here.

In the embodiment of the application, the terminal equipment receives the first information from the network equipment. The terminal device then determines the length of the filler bits in the first SCI based on the first information. The first SCI is associated with a positioning function. It follows that the first SCI is associated with a positioning function and the terminal device determines the length of the filler bits in the first SCI from the first information. Thereby realizing the design of SCI for positioning. The first SCI is also associated with a data transfer function, thereby simultaneously implementing data demodulation and positioning reference signal transceiving related functions. For example, the first SCI may include fields included in SCI2-A, SCI2-B or SCI2-C, and total lengths of the fields included in SCI2-A, SCI2-B and SCI2-C are different, respectively, so that the terminal device can determine the length of the filler bits in the first SCI according to the first information. So that the total length of the first SCI employed by different terminal devices in the resource pool is uniform or identical. The problem that different terminal equipment has deviation in understanding the length of the first SCI is avoided, so that characteristic decoupling of positioning characteristics, inter-user cooperation functions and the like is realized, and decoding failure of the first SCI is avoided.

Fig. 8 is a schematic diagram of another embodiment of a determination method according to an embodiment of the present application. Referring to fig. 8, the method includes:

801. the terminal device determines the length of the filler bits in the first SCI according to the first length.

The first SCI is associated with a positioning function. Reference is made to the relevant description of step 701 in the embodiment shown in fig. 7A described above with respect to the first SCI.

The first length is the total length of the first SCI when the first SCI includes SCIs of the fourth format. Optionally, the fourth format is SCI2-C. For relevant description of SCI2-C, refer to the relevant description in the foregoing technical terminology. The value of the provide or request indication field in SCI of the fourth format is 0. As can be seen from the relevant description in the technical terms above, when the value of the provide or request indication field in SCI2-C is 0, the length of SCI2-C is maximum, i.e. SCI2-C does not include padding bits.

The terminal device takes the first length as the total length of the first SCI. The terminal device then determines the length of the filler bits in the first SCI based on the total length of the first SCI. The first SCI includes a field related to a positioning function, a field related to a SCI of a second format, a format type indication field, and a filler bit field. The pad bit field includes pad bits. For the fields related to the SCI of the second format, and the format type indication field, refer to the related description in the embodiment shown in fig. 7A described above. The terminal device then determines the length of the padding bits in the first SCI based on the total length of the first SCI, the length of the field associated with the positioning function, the length of the field associated with the SCI of the second format, and the format indication field.

Optionally, the embodiment shown in fig. 8 further includes step 801a. Step 801a may be performed prior to step 801.

801A, the network device sends resource pool configuration information to the terminal device. Correspondingly, the terminal device receives the resource pool configuration information from the network device.

802. The terminal equipment complements the length of the first SCI according to the length of the filler bits in the first SCI.

The terminal device adds padding bits of the length after the signaling field of the first SCI. For example, the first SCI includes a field related to a positioning function, a field related to a SCI of the second format, a format type indication field, and a filler bit field. The pad bit field includes pad bits. The pad bit field includes the pad bit.

In this embodiment, for a terminal device supporting SCI2-D, that is, a terminal device supporting transmission of a positioning reference signal and data in one slot, it is default that the terminal device can calculate the length of the field included in SCI 2-C. The terminal device thus bit fills the first SCI based on the largest length SCI format of SCI2-A, SCI-B and SCI 2-C. The first SCI includes fields including, in particular, a field related to the SCI of the second format, a field related to the positioning function, a format type indication field, and a filler bit field. The pad bit field includes the pad bit. For example, the field associated with the SCI of the second format may be that the first SCI contains a SCI2-A related field, a SCI2-B related field, or a SCI2-C related field. The purpose of setting the filler bit field in the first SCI is to keep the total length of the first SCI consistent regardless of which second format SCI related field the first SCI carries.

When the first SCI includes an SCI2-A related field, or an SCI2-B related field, an SCI2-C related field, and the value of the provide or request indication field in SCI2-C is 1, the first SCI includes a filler bit such that the total length of the first SCI coincides with the total length of the first SCI when the first SCI includes SCI2-C and the value of the provide or request indication field in SCI2-C is 0.

Optionally, the embodiment shown in fig. 8 further includes steps 803 to 805. Steps 803 to 805 may be performed after step 802.

803. The terminal device sends the first SCI to the other terminal devices.

804. Other terminal equipment demodulates the first SCI and measures the positioning reference signal to obtain a measurement result.

805. And the other terminal equipment sends the measurement result to the terminal equipment. Correspondingly, the terminal device receives measurement results from the other terminal devices.

Steps 803 to 805 are similar to steps 704 to 706 in the embodiment shown in fig. 7A, and reference may be made to the description of steps 704 to 706 in the embodiment shown in fig. 7A.

It should be noted that, optionally, before step 803, the terminal device sends the first stage SCI. The first stage SCI is used to indicate the type of first SCI. For example, the terminal device transmits SCI1-A indicating that the type of the first SCI is SCI2-D.

In the embodiment shown in fig. 8, a simplified calculation method is proposed for the problem of calculating the length of the padding bits in the first SCI. The terminal device determines the length of the filler bits in the first SCI based on the first length. Thereby avoiding the problem of deviation in understanding the length of the first SCI by different terminal devices. The decoding failure of the first SCI is avoided, and the normal operation of the positioning reference signal and the data in the simultaneous transmission is ensured. Enabling coexistence of terminal devices supporting different capabilities and/or different characteristics. Different terminal devices have the same understanding of the length of the first SCI.

The following describes a communication device provided by an embodiment of the present application. Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the application. The communication device may be configured to perform the steps performed by the terminal device in the embodiments shown in fig. 7A and fig. 8, and reference is specifically made to the description related to the above method embodiment.

The communication device 900 comprises a transceiver module 901 and a processing module 902.

The transceiver module 901 may implement a corresponding communication function, and the transceiver module 901 may also be referred to as a communication interface or a communication unit. The processing module 902 is configured to perform processing operations.

Optionally, the communication device 900 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 902 may read the instructions and/or data in the storage module, so that the communication device implements the method embodiments shown in fig. 7A and fig. 8.

The communication apparatus 900 may be configured to perform the actions performed by the terminal device in the above method embodiments. The communication apparatus 900 may be a terminal device or a component configurable at a terminal device. The transceiver module 901 is configured to perform a transmission-related operation or a reception-related operation on the terminal device side in the above method embodiment, and the processing module 902 is configured to perform a processing-related operation on the terminal device side in the above method embodiment.

Alternatively, the transceiver module 901 may include a transmitting module and a receiving module. The sending module is configured to perform the sending operation of the terminal device in the method embodiments shown in fig. 7A and fig. 8. The receiving module is configured to perform the receiving operation of the terminal device in the method embodiments shown in fig. 7A and fig. 8.

It should be noted that, the communication apparatus 900 may include a transmitting module, and not include a receiving module. Or the communication device 900 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 900 includes a transmission action and a reception action.

The communication device 900 is configured to perform some or all of the steps performed by the terminal device in the embodiments shown in fig. 7A and 8. Reference is made in particular to the description of the embodiments shown in fig. 7A and 8. For example, the communication apparatus 900 may perform the following scheme:

a transceiver module 901, configured to receive first information from a network device;

A processing module 902 is configured to determine a length of a filler bit in a first SCI according to the first information, the first SCI being associated with a positioning function.

In one possible implementation, the format of the first SCI is a first format. For example, the first format may be SCI2-D. The first SCI is a second stage SCI.

In another possible implementation, the first information includes a total length of the first SCI, and the processing module 902 is specifically configured to determine a length of the filler bits in the first SCI according to the total length of the first SCI.

In another possible implementation, the length of the padding bits is related to the number of positioning reference signal resources in the resource pool.

In another possible implementation, the first SCI includes a first field including a filler bit field and a field associated with the SCI in the second format, and the filler bit field includes filler bits.

In another possible implementation, the length of the first field is M, where M satisfies the following condition: Where N _SCI-2D is the total length of the first SCI, N _PRS is the number of positioning reference signal resources in the resource pool, and K is an integer.

In another possible implementation, the first information is carried in the resource pool configuration information, and the length of the padding bits is related to the number of positioning reference signal resources in the resource pool.

In another possible implementation, the first information includes a length of the filler bits in the first SCI.

In another possible implementation, the first information includes a length of the filler bits in the first SCI when the first SCI contains SCI related information in the second format.

In another possible implementation, the first information includes SCI format information indicating an SCI of a third format, and the processing module 902 is specifically configured to determine a length of the padding bits in the first SCI based on the SCI of the third format.

In another possible implementation, the third format is SCI2-A, SCI2-B, or SCI2-C.

In another possible implementation, the first SCI is configured to indicate control information related to positioning reference signal resources, and the first SCI is further configured to indicate control information related to data transmission.

In another possible implementation, the control information related to the data transmission is a field contained in SCI2-A, SCI2-B or SCI 2-C.

In another possible implementation, the first information includes first indication information indicating a formula for calculating a total length of the first SCI.

In another possible implementation, the formula for calculating the total length of the first SCI is a first formula or a second formula, the first formula being related to a first value, the first value being not less than 48;

In another possible implementation, the first formula is l=48+d+e, L is the total length of the first SCI, d is the length of the field related to the positioning function in the first SCI, and e is an integer greater than 0.

In another possible implementation, the second formula is l=41+a+b+c+d, L is the total length of the first SCI, and d is the length of the field in the first SCI that is related to the positioning function.

In another possible implementation, the first information is carried in resource pool configuration information, positioning reference signal resource configuration information, positioning reference signal configuration information, PSCCH configuration information, or PSSCH configuration information.

As another example, the communication apparatus 900 may perform the following scheme:

A processing module 902, configured to determine a length of a padding bit in the first SCI according to a first length, where the first SCI is related to a positioning function, and the first length is a total length of the first SCI when the first SCI includes the SCI in the fourth format, and supplement the length of the first SCI by the length of the padding bit.

In one possible implementation, the fourth format is SCI2-C.

In another possible implementation, the value of the provide or request indication field in the SCI of the fourth format is 0.

It should be understood that the specific process of each module performing the corresponding process is described in detail in the above method embodiments, and is not described herein for brevity.

The processing module 902 in the above embodiments may be implemented by at least one processor or processor-related circuitry. Transceiver module 901 may be implemented by a transceiver or transceiver related circuitry. The transceiver module 901 may also be collectively referred to as a transceiver module, a communication module, or a communication interface. The memory module may be implemented by at least one memory.

Fig. 10 is a schematic diagram of another structure of a communication device according to an embodiment of the present application. Referring to fig. 10, the communication device may be configured to perform the steps performed by the network device in the embodiment shown in fig. 7A, and reference is specifically made to the related description in the above method embodiment.

The communication device 1000 includes a transceiver module 1001 and a processing module 1002.

The transceiver module 1001 may implement a corresponding communication function, and the transceiver module 1001 may also be referred to as a communication interface or a communication unit. The processing module 1002 is configured to perform processing operations.

Optionally, the communication device 1000 may further include a storage module, where the storage module may be used to store instructions and/or data, and the processing module 1002 may read the instructions and/or data in the storage module, so that the communication device implements the method embodiment shown in fig. 7A.

The communications apparatus 1000 can be configured to perform the actions performed by the network device in the method embodiments above. The communication apparatus 1000 may be a network device or a component configurable in a network device. The transceiver module 1001 is configured to perform a transmission-related operation or a reception-related operation on the network device side in the above method embodiment, and the processing module 1002 is configured to perform a processing-related operation on the network device side in the above method embodiment.

Alternatively, the transceiver module 1001 may include a transmitting module and a receiving module. The sending module is configured to perform the sending operation of the network device in the method embodiment shown in fig. 7A. The receiving module is configured to perform the receiving operation of the network device in the method embodiment shown in fig. 7A.

It should be noted that the communication apparatus 1000 may include a transmitting module, and not include a receiving module. Or the communication device 1000 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether or not the above scheme executed by the communication apparatus 1000 includes a transmission operation and a reception operation.

The communication apparatus 1000 is configured to perform some or all of the steps performed by the network device in the embodiment shown in fig. 7A. Reference is made in particular to the description of the embodiment shown in fig. 7A. For example, the communication apparatus 1000 may perform the following scheme:

A processing module 1002 for determining first information for determining a length of a filler bit in a first SCI, the first SCI being associated with a positioning function;

The transceiver module 1001 is configured to send the first information to a terminal device.

the second formula is related to a second value, a third value a, a fourth value b and a fifth value c, wherein the second value is not less than 41, the Fourth numerical valueFifth numerical value For the number of sub-channels in the resource pool,N _{rsv_period} is the number of elements in the resource reservation period list configured by the higher layer signaling, and μ is a parameter related to the subcarrier spacing.

The processing module 1002 in the above embodiments may be implemented by at least one processor or processor-related circuitry. Transceiver module 1001 may be implemented by a transceiver or transceiver related circuitry. The transceiver module 1001 may also be collectively referred to as a transceiver module, a communication module, or a communication interface. The memory module may be implemented by at least one memory.

A possible structural diagram of the terminal device is shown below by means of fig. 11.

Fig. 11 shows a simplified schematic diagram of the structure of a terminal device. For ease of understanding and illustration, in fig. 11, a mobile phone is taken as an example of the terminal device. As shown in fig. 11, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device.

The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data.

The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal.

The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves.

Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

For ease of illustration, only one memory and processor is shown in fig. 11. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the receiving and transmitting functions can be regarded as a receiving and transmitting unit of the terminal equipment, and the processor with the processing function can be regarded as a processing unit of the terminal equipment. As shown in fig. 11, the terminal device includes a transceiving unit 1110 and a processing unit 1120. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc.

Alternatively, the device for implementing the receiving function in the transceiver unit 1110 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 1110 may be regarded as a transmitting unit, that is, the transceiver unit 1110 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that, the transceiver 1110 is configured to perform the sending operation and the receiving operation of the terminal device in the above method embodiment, and the processing unit 1120 is configured to perform other operations on the terminal device except for the transceiver operation in the above method embodiment.

When the terminal device is a chip, the chip comprises a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit or a communication interface, and the processing unit is a processor or a microprocessor or an integrated circuit or a logic circuit integrated on the chip.

Fig. 12 is a schematic diagram of still another configuration of a communication apparatus according to an embodiment of the present application. Referring to fig. 12, the communications apparatus 1200 may be configured to perform the steps performed by the terminal device in the embodiment shown in fig. 7A or fig. 8, or may be configured to perform the steps performed by the network device in the embodiment shown in fig. 7A, which may be referred to the relevant descriptions in the above method embodiments.

The communication device 1200 includes a processor 1201. Optionally, the communication device further comprises a memory 1202 and a transceiver 1203.

In a possible implementation, the processor 1201, the memory 1202 and the transceiver 1203 are each connected by a bus, where the memory stores computer instructions.

Alternatively, the processing module 902 in the foregoing embodiment may be specifically the processor 1201 in the present embodiment, so that a specific implementation of the processor 1201 is not described herein. The transceiver module 901 in the foregoing embodiment may be the transceiver 1203 in the present embodiment, so the detailed implementation of the transceiver 1203 is not repeated.

Alternatively, the processing module 1002 in the foregoing embodiment may be specifically the processor 1201 in this embodiment, so that a specific implementation of the processor 1201 is not described herein. The transceiver module 1001 in the foregoing embodiment may be the transceiver 1203 in the present embodiment, so the detailed implementation of the transceiver 1203 is not repeated.

The present application also provides a communication apparatus 1300. Referring to fig. 13, the communication apparatus 1300 may be a network device or a chip. The communications apparatus 1300 can be employed to perform the operations described above as being performed by a network device in the embodiment illustrated in fig. 7A.

When the communication apparatus 1300 is a network device, for example, a base station. Fig. 13 shows a simplified schematic of a base station architecture. The base station includes a portion 1310, a portion 1320, and a portion 1330.

The 1310 part is mainly used for baseband processing, control of the base station, and the like. Portion 1310 is typically a control center of the base station, and may be generally referred to as a processor, for controlling the base station to perform the processing operations on the network device side in the above method embodiment.

Portion 1320 is mainly used for storing computer program code and data.

Section 1330 is mainly used for receiving and transmitting rf signals and converting rf signals to baseband signals. Section 1330 may be referred to generally as a transceiver module, transceiver circuitry, or transceiver, etc. Section 1330, which may also be referred to as a transceiver or transceiver, includes an antenna 1333 and radio frequency circuitry (not shown) that is primarily configured to perform radio frequency processing. Alternatively, the means for implementing the receiving function in section 1330 may be considered a receiver and the means for implementing the transmitting function may be considered a transmitter, i.e., section 1330 includes a receiver 1332 and a transmitter 1331. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, etc., and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

Portions 1310 and 1320 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control of the base station. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, the transceiver module of section 1330 is configured to perform the transceiver-related procedures performed by the network device in the embodiment shown in fig. 7A. Part 1310 is used to perform the processing related procedures performed by the network device in the embodiment shown in fig. 7A.

It should be understood that fig. 13 is merely an example and not a limitation, and that the network device including the processor, the memory, and the transceiver described above may not rely on the structure shown in fig. 10 or fig. 13.

When the communications device 1300 is a chip, the chip includes a transceiver, a memory, and a processor. The transceiver can be an input/output circuit, a communication interface, and the processor can be a processor integrated on the chip, a microprocessor or an integrated circuit. The sending operation of the network device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the network device in the above method embodiment may be understood as the input of the chip.

The embodiment of the application also provides a computer readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the network device in the above method embodiment are stored.

For example, the computer program, when executed by a computer, enables the computer to implement the method performed by the terminal device or the network device in the above-described method embodiments.

The embodiment of the application also provides a computer program product containing instructions, which when executed by a computer, cause the computer to implement the method executed by the terminal device or the network device in the above method embodiment.

The embodiment of the application also provides a communication system, which comprises the terminal equipment in the embodiment and the network equipment in the embodiment.

The embodiment of the application also provides a chip device, which comprises a processor, and the processor is used for calling the computer degree or the computer instruction stored in the memory, so that the processor executes the method provided by the embodiment shown in the above-mentioned fig. 7A and 8.

In a possible implementation, the input of the chip device corresponds to the receiving operation in the embodiment shown in fig. 7A and 8, and the output of the chip device corresponds to the transmitting operation in the embodiment shown in fig. 7A and 8.

Optionally, the processor is coupled to the memory through an interface.

Optionally, the chip device further comprises a memory, in which the computer degree or the computer instructions are stored.

The processor referred to in any of the above may be a general purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs of the methods provided by the embodiments shown in fig. 7A and 8. The memory referred to in any of the above may be read-only memory (ROM) or other type of static storage device, random access memory (random access memory, RAM), or the like, that may store static information and instructions.

It will be clearly understood by those skilled in the art that, for convenience and brevity, explanation and beneficial effects of the relevant content in any of the above-mentioned communication devices may refer to the corresponding method embodiments provided above, and are not repeated here.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, a substantial portion of the technical solution of the present application, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. The storage medium includes various media capable of storing program codes such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk.

While the application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit of the embodiments.

Claims

1. A method of determining, the method comprising:

The terminal equipment receives first information from the network equipment;

the terminal device determines the length of the padding bits in a first SCI according to the first information, wherein the first SCI is related to a positioning function.

2. An information transmission method, the method comprising:

the network device determining first information for determining a length of a filler bit in a first side-link control information SCI, the first SCI being related to a positioning function;

the network device sends the first information to the terminal device.

3. The method according to claim 1 or 2, characterized in that the format of the first SCI is a first format.

4. A method according to claim 1 or 3, characterized in that the first information comprises the total length of the first SCI, and that the terminal device determines the length of the filler bits in the first SCI from the first information, comprising:

The terminal equipment determines the length of the padding bits in the first SCI according to the total length of the first SCI.

5. The method of claim 4, wherein the length of the filler bits is related to a number of positioning reference signal resources in a resource pool.

6. The method of claim 4 or 5 wherein the first SCI comprises a first field comprising a filler bit field and a field associated with a SCI in a second format, the filler bit field comprising the filler bits.

7. The method of claim 6, wherein the first field has a length of M, the M satisfying the following condition:

Wherein N _SCI-2D is the total length of the first SCI, N _PRS is the number of positioning reference signal resources in the resource pool, and K is an integer.

8. A method according to any one of claims 1 to 3, wherein the first information is carried in resource pool configuration information, and wherein the length of the filler bits is related to the number of positioning reference signal resources in the resource pool.

9. A method according to any of claims 1-3, characterized in that the first information comprises the length of the filler bits in the first SCI.

10. The method of claim 9 wherein the first information comprises a length of padding bits in the first SCI when the first SCI contains SCI related information in a second format.

11. The method of claim 10, wherein the second format comprises at least one of SCI2-A, SCI2-B, or SCI2-C.

12. A method according to claim 1 or 3, characterized in that the first information comprises SCI format information indicating SCI in a third format;

the terminal device determines the length of the padding bits in the first SCI based on the SCI in the third format.

13. The method of claim 12, wherein the third format is SCI2-a, SCI2-B, or SCI2-C.

14. The method according to any of the claims 1 to 13, characterized in that the first SCI is adapted to indicate control information related to positioning reference signal resources, the first SCI being further adapted to indicate control information related to data transmission.

15. The method of claim 14, wherein the control information related to data transmission is a field included in SCI2-A, SCI-B or SCI 2-C.

16. A method according to any of claims 1-3, characterized in that the first information comprises first indication information indicating a formula for calculating the total length of the first SCI.

17. The method of claim 16 wherein the formula for calculating the total length of the first SCI is a first formula or a second formula, the first formula being related to a first value, the first value being not less than 48;

The second formula is related to a second value, a third value a, a fourth value b and a fifth value c;

Wherein the second value is not less than 41 and the third value The fourth numerical value The fifth numerical valueThe saidFor the number of sub-channels in the resource pool,And N _{rsv_period} is the number of elements in a resource reservation period list configured by high-layer signaling, and mu is a parameter related to subcarrier spacing.

18. The method of claim 17 wherein the first formula is L = 48+ d + e, L is the total length of the first SCI, d is the length of a field of the first SCI associated with a positioning function, and e is an integer greater than 0.

19. The method of claim 17, wherein the second formula is L=41+a+b+c+d+e, L is the total length of the first SCI, d is the length of a field of the first SCI associated with a positioning function, and e is an integer greater than 0.

20. The method according to any of claims 1 to 19, wherein the first information is carried in resource pool configuration information, positioning reference signal resource configuration information, positioning reference signal configuration information, physical side-uplink control channel PSCCH configuration information, or physical side-uplink shared channel PSSCH configuration information.

21. A communication device, comprising a processing module and a transceiver module;

The processing module for performing the processing operations in the method of any one of claims 1,3 to 20, the transceiving module for performing the transceiving operations in the method of any one of claims 1,3 to 20, or

The processing module is configured to perform the processing operations in the method of any one of claims 2, 3, 8 to 20, and the transceiver module is configured to perform the transceiver operations in the method of any one of claims 2, 3, 8 to 20.

22. A communication device comprising a processor for executing a computer program or computer instructions in a memory to implement the method of any one of claims 1,3 to 20 or to implement the method of any one of claims 2,3, 8 to 20.

23. The communication apparatus according to claim 22, further comprising the memory for storing the computer program or computer instructions.

24. A computer readable storage medium, having stored thereon a computer program which, when executed by a communication device, causes the communication device to perform the method of any of claims 1 to 20.