Method, apparatus and system for allocating sidelink positioning reference signal resources and storage medium

Abstract

The side link positioning reference signal resource allocation method, device, system and storage medium are applied to the technical field of wireless communication. The method comprises the following steps: a network device receives a first request from a first terminal, wherein the first request is used for requesting allocation of a side link positioning reference signal resource; the network device determines a first resource used by the first terminal according to the first request, wherein the first resource comprises one resource in a first side link positioning reference signal resource group, the first side link positioning reference signal resource group is one of M time-division multiplexing side link positioning reference signal resource groups in a first time slot, the value of M is determined by the number of symbols for a side link in the first time slot and at least one threshold, and M is a positive integer greater than or equal to 1; the network device sends first indication information to the first terminal, wherein the first indication information is used for indicating the first resource.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the Chinese patent application No. 202210595229.9, filed on May 28, 2022, and entitled "Reference Signal Resource Allocation Method, Device, System and Storage Medium", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, in particular to a sidelink positioning reference signal resource allocation method, device, system and storage medium. BACKGROUND

[0004] In the 5th generation mobile communication technology (5G) system, a terminal can obtain at least one of a reference signal time difference (RSTD) and a reference signal receiving power (RSRP) between multiple cells or multiple transmission points by measuring positioning reference signals (PRS) sent from the multiple cells or multiple transmission points, and then send the measured results to the network side for positioning.

[0005] In the 5G system, the allocation method of PRS resources can adopt 2 comb division, 4 comb division, 6 comb division and 12 comb division, which respectively occupy 2 symbols, 4 symbols, 6 symbols and 12 symbols, and the number of occupied symbols is an integer multiple of the number of comb divisions. However, in the direct communication scenario, the number of symbols in a time slot is no longer 14 as in the cellular system, but at least 7 symbols and at most 14 symbols. Therefore, it is necessary to design a suitable sidelink positioning reference signal (SL-PRS) resource allocation method for the sidelink (SL) communication scenario. SUMMARY

[0006] Embodiments of the present application provide a sidelink positioning reference signal resource allocation method, device, system and storage medium to realize resource allocation of reference signals for positioning on a sidelink.

[0007] In a first aspect, a method for allocating sidelink positioning reference signal resources is provided. The method comprises: receiving, by a network device, a first request from a first terminal, the first request being used to request allocation of sidelink positioning reference signal resources; determining, by the network device, a first resource used by the first terminal according to the first request, the first resource comprising one resource in a first sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group being one of M time-division multiplexed sidelink positioning reference signal resource groups in a first time slot, the value of M being determined by a number of symbols used for sidelink in the first time slot and at least one threshold, M being a positive integer greater than or equal to 1; and sending, by the network device, first indication information to the first terminal, the first indication information being used to indicate the first resource.

[0008] In the above implementation, since the number of sidelink positioning reference signal resource groups in a first time slot can be determined by the number of symbols used for sidelink in the first time slot and at least one threshold, the signaling overhead of high-layer configuration of sidelink positioning reference signal resources can be avoided. On the other hand, relative to the time-domain resources currently used for sidelink transmission, which are in units of time slots and do not support sidelink mini-slots, the present embodiment can allocate time-domain resources in a time slot, thereby improving user multiplexing capacity.

[0009] In a possible implementation, the at least one threshold is determined by system convention or configured by network signaling, thereby improving the configuration flexibility of the at least one threshold.

[0010] In a possible implementation, the at least one threshold comprises a first threshold; if the number of symbols used for sidelink in the first time slot is less than or equal to the first threshold, the first time slot comprises one sidelink positioning reference signal resource group; and if the number of symbols used for sidelink in the first time slot is greater than the first threshold, the first time slot comprises two sidelink positioning reference signal resource groups.

[0011] In the above implementation, a first threshold is defined. If the number of symbols used for sidelink in a first time slot is less than or equal to the first threshold, it indicates that the number of symbols is small, and therefore only one sidelink positioning reference signal resource group is divided. If the number of symbols used for sidelink in the first time slot is greater than the first threshold, it indicates that the number of symbols is large, and therefore two sidelink positioning reference signal resource groups can be divided to accommodate more users.

[0012] In a possible implementation, the at least one threshold value includes a second threshold value and a third threshold value, the second threshold value is smaller than the third threshold value; if the number of symbols for sidelink in the first time slot is smaller than or equal to the second threshold value, one sidelink positioning reference signal resource group is included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the second threshold value and smaller than or equal to the third threshold value, two sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the third threshold value, three sidelink positioning reference signal resource groups are included in the first time slot.

[0013] In the above implementation, two threshold values (the second threshold value and the third threshold value) are defined, if the number of symbols for sidelink in the first time slot is smaller than or equal to the second threshold value, it indicates that the number of symbols is small, and therefore only one sidelink positioning reference signal resource group is divided; if the number of symbols for sidelink in the first time slot is between the second threshold value and the third threshold value, it indicates that the number of symbols is moderate, and therefore two sidelink positioning reference signal resource groups can be divided; if the number of symbols for sidelink in the first time slot is greater than the third threshold value, it indicates that the number of symbols is large, and three sidelink positioning reference signal resource groups can be divided to accommodate more users.

[0014] In a possible implementation, the at least one threshold value includes a fourth threshold value, a fifth threshold value and a sixth threshold value, the fourth threshold value is smaller than the fifth threshold value, and the fifth threshold value is smaller than the sixth threshold value; if the number of symbols for sidelink in the first time slot is smaller than or equal to the fourth threshold value, one sidelink positioning reference signal resource group is included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fourth threshold value and smaller than or equal to the fifth threshold value, two sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fifth threshold value and smaller than or equal to the sixth threshold value, three sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the sixth threshold value, four sidelink positioning reference signal resource groups are included in the first time slot.

[0015] In a possible implementation, the two sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, and the second sidelink positioning reference signal resource group occupies a second symbol set; the number of symbols in the first symbol set and the second symbol set is the same; or the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set. In this way, the coverage of the two sidelink positioning reference signal resource groups can be made as same as possible.

[0016] In a possible implementation, the three sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, and the third sidelink positioning reference signal resource group occupies a third symbol set; the number of symbols in the first symbol set, the second symbol set, and the third symbol set is the same; or the number of symbols in the first symbol set and the second symbol set is the same, and the number of symbols in the first symbol set or the second symbol set is one more than the number of symbols in the third symbol set; or the number of symbols in the second symbol set and the third symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set and the third symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set, and the time domain position of the second symbol set is before the time domain position of the third symbol set. In this way, the coverage of the three sidelink positioning reference signal resource groups can be made as same as possible.

[0017] In a possible implementation, the four sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, a third sidelink positioning reference signal resource group, and a fourth sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, the third sidelink positioning reference signal resource group occupies a third symbol set, and the fourth sidelink positioning reference signal resource group occupies a fourth symbol set; the number of symbols in the first symbol set, the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set, and the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set and the second symbol set is the same, the number of symbols in the third symbol set and the fourth symbol set is the same, and the number of symbols in the first symbol set is one more than the number of symbols in the third symbol set; or the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set, the time domain position of the second symbol set is before the time domain position of the third symbol set, and the time domain position of the third symbol set is before the time domain position of the fourth symbol set.

[0018] In a possible implementation, the method further includes: receiving a second request from a second terminal, the second request being used to request allocation of sidelink positioning reference signal resources; determining, according to the second request, a second resource used by the second terminal, the second resource including one of second sidelink positioning reference signal resource groups, the second sidelink positioning reference signal resource group being one of the M time-division multiplexed sidelink positioning reference signal resource groups in the first time slot, and the second sidelink positioning reference signal resource group being different from the first sidelink positioning reference signal resource group, thereby achieving time-division multiplexing of positioning reference signal resources of the first terminal and the second terminal to improve user capacity.

[0019] In a possible implementation, the method further includes: receiving a third request from a third terminal, the third request being used to request allocation of a sidelink positioning reference signal resource; determining, according to the third request, a third resource used by the third terminal, the third resource including one resource in the first sidelink positioning reference signal resource group, and the third resource and the first resource being different in frequency domain location, so that frequency division multiplexing of the positioning reference signal resources of the first terminal and the third terminal is implemented to improve user capacity.

[0020] In a possible implementation, each of the M sidelink positioning reference signal resource groups includes an automatic gain control (AGC) symbol and a gap (GAP) symbol, or does not include the AGC symbol and the GAP symbol.

[0021] In a possible implementation, at least one of the AGC symbol and the GAP symbol is included in the symbol used for sidelink in the first time slot, or the AGC symbol and the GAP symbol are not included.

[0022] In a second aspect, a sidelink positioning reference signal resource allocation method is provided, including: a terminal receiving first indication information from a network device, the first indication information being used to indicate a first resource, the first resource including one resource in a first sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group being one of M time division multiplexed sidelink positioning reference signal resource groups in a first time slot, a value of M being determined by a number of symbols used for sidelink in the first time slot and at least one threshold, M being a positive integer greater than or equal to 1; and the terminal receiving or sending a sidelink positioning reference signal on the first resource.

[0023] In a possible implementation, the at least one threshold is determined by system convention or configured by network signaling.

[0024] In a possible implementation, the at least one threshold includes a first threshold; if the number of symbols used for sidelink in the first time slot is less than or equal to the first threshold, one sidelink positioning reference signal resource group is included in the first time slot; and if the number of symbols used for sidelink in the first time slot is greater than the first threshold, two sidelink positioning reference signal resource groups are included in the first time slot.

[0025] In a possible implementation, the at least one threshold includes a second threshold and a third threshold, the second threshold is less than the third threshold; if the number of symbols for sidelink in the first time slot is less than or equal to the second threshold, one sidelink positioning reference signal resource group is included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the second threshold and less than or equal to the third threshold, two sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the third threshold, three sidelink positioning reference signal resource groups are included in the first time slot.

[0026] In a possible implementation, the at least one threshold includes a fourth threshold, a fifth threshold and a sixth threshold, the fourth threshold is less than the fifth threshold, and the fifth threshold is less than the sixth threshold; if the number of symbols for sidelink in the first time slot is less than or equal to the fourth threshold, one sidelink positioning reference signal resource group is included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fourth threshold and less than or equal to the fifth threshold, two sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fifth threshold and less than or equal to the sixth threshold, three sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the sixth threshold, four sidelink positioning reference signal resource groups are included in the first time slot.

[0027] In a possible implementation, the two sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, and the second sidelink positioning reference signal resource group occupies a second symbol set; the number of symbols in the first symbol set and the second symbol set is the same; or, the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set; wherein the time domain position of the first symbol set is before the time domain position of the second symbol set.

[0028] In a possible implementation, the three sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, and the third sidelink positioning reference signal resource group occupies a third symbol set; the number of symbols in the first symbol set, the second symbol set, and the third symbol set is the same; or the number of symbols in the first symbol set and the second symbol set is the same, and the number of symbols in the first symbol set or the second symbol set is one more than that in the third symbol set; or the number of symbols in the second symbol set and the third symbol set is the same, and the number of symbols in the first symbol set is two more than that in the second symbol set and the third symbol set; and the time domain position of the first symbol set is before that of the second symbol set, and the time domain position of the second symbol set is before that of the third symbol set.

[0029] In a possible implementation, the four sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, a third sidelink positioning reference signal resource group, and a fourth sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, the third sidelink positioning reference signal resource group occupies a third symbol set, and the fourth sidelink positioning reference signal resource group occupies a fourth symbol set.

[0030] The number of symbols in the first symbol set, the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set is one more than that in the second symbol set, and the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set and the second symbol set is the same, the number of symbols in the third symbol set and the fourth symbol set is the same, and the number of symbols in the first symbol set is one more than that in the third symbol set; or the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same, and the number of symbols in the first symbol set is two more than that in the second symbol set, the third symbol set, and the fourth symbol set; and the time domain position of the first symbol set is before that of the second symbol set, the time domain position of the second symbol set is before that of the third symbol set, and the time domain position of the third symbol set is before that of the fourth symbol set.

[0031] In a possible implementation, each of the M sidelink positioning reference signal resource groups includes AGC symbols and GAP symbols, or does not include AGC symbols and GAP symbols.

[0032] In a possible implementation, at least one of the AGC symbols and the GAP symbols is included in the symbols for sidelink in the first slot, or none of the AGC symbols and the GAP symbols is included in the symbols for sidelink in the first slot.

[0033] In a third aspect, a sidelink positioning reference signal resource allocation method is provided, including: determining, by a terminal, M sidelink positioning reference signal resource groups in a first slot according to a number of symbols for sidelink in the first slot and at least one threshold, M being a positive integer greater than or equal to 1; selecting, by the terminal, a first resource in one of the M sidelink positioning reference signal resource groups; and receiving or transmitting, by the terminal, a positioning reference signal on the first resource.

[0034] In a possible implementation, the at least one threshold is agreed by a system or configured by network signaling.

[0035] In a possible implementation, the at least one threshold includes a first threshold; if the number of symbols for sidelink in the first slot is less than or equal to the first threshold, one sidelink positioning reference signal resource group is included in the first slot; and if the number of symbols for sidelink in the first slot is greater than the first threshold, two sidelink positioning reference signal resource groups are included in the first slot.

[0036] In a possible implementation, the at least one threshold includes a second threshold and a third threshold, the second threshold being less than the third threshold; if the number of symbols for sidelink in the first slot is less than or equal to the second threshold, one sidelink positioning reference signal resource group is included in the first slot; if the number of symbols for sidelink in the first slot is greater than the second threshold and less than or equal to the third threshold, two sidelink positioning reference signal resource groups are included in the first slot; and if the number of symbols for sidelink in the first slot is greater than the third threshold, three sidelink positioning reference signal resource groups are included in the first slot.

[0037] In a possible implementation, the at least one threshold value includes a fourth threshold value, a fifth threshold value, and a sixth threshold value, the fourth threshold value is less than the fifth threshold value, and the fifth threshold value is less than the sixth threshold value; if the number of symbols for sidelink in the first time slot is less than or equal to the fourth threshold value, one sidelink positioning reference signal resource group is included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fourth threshold value and less than or equal to the fifth threshold value, two sidelink positioning reference signal resource groups are included in the first time slot; if the number of symbols for sidelink in the first time slot is greater than the fifth threshold value and less than or equal to the sixth threshold value, three sidelink positioning reference signal resource groups are included in the first time slot; and if the number of symbols for sidelink in the first time slot is greater than the sixth threshold value, four sidelink positioning reference signal resource groups are included in the first time slot.

[0038] In a possible implementation, the two sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, and the second sidelink positioning reference signal resource group occupies a second symbol set; the number of symbols in the first symbol set is the same as the number of symbols in the second symbol set, or the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set.

[0039] In a possible implementation, the three sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, and the third sidelink positioning reference signal resource group occupies a third symbol set; the number of symbols in the first symbol set is the same as the number of symbols in the second symbol set and the third symbol set, or the number of symbols in the first symbol set and the second symbol set is the same, and the number of symbols in the first symbol set or the second symbol set is one more than the number of symbols in the third symbol set, or the number of symbols in the second symbol set and the third symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set and the third symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set, and the time domain position of the second symbol set is before the time domain position of the third symbol set.

[0040] In a possible implementation, the four sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, a third sidelink positioning reference signal resource group, and a fourth sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group occupies a first symbol set, the second sidelink positioning reference signal resource group occupies a second symbol set, the third sidelink positioning reference signal resource group occupies a third symbol set, and the fourth sidelink positioning reference signal resource group occupies a fourth symbol set; the number of symbols in the first symbol set, the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set, and the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same; or the number of symbols in the first symbol set and the second symbol set is the same, the number of symbols in the third symbol set and the fourth symbol set is the same, and the number of symbols in the first symbol set is one more than the number of symbols in the third symbol set; or the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set, the third symbol set, and the fourth symbol set; and the time domain position of the first symbol set is before the time domain position of the second symbol set, the time domain position of the second symbol set is before the time domain position of the third symbol set, and the time domain position of the third symbol set is before the time domain position of the fourth symbol set.

[0041] In a possible implementation, each of the M sidelink positioning reference signal resource groups includes an AGC symbol and a GAP symbol, or does not include an AGC symbol and a GAP symbol.

[0042] In a possible implementation, at least one of an AGC symbol and a GAP symbol is included in the symbol for sidelink in the first time slot, or an AGC symbol and a GAP symbol are not included.

[0043] In a fourth aspect, a communication system is provided, including a network device and a terminal; the network device is configured to perform the method in any one of the first aspects, the terminal is configured to perform the method in any one of the second aspects, or perform the method in any one of the third aspects.

[0044] In a fifth aspect, a communication apparatus is provided, including a processor, a memory, and a computer program; the computer program is stored in the memory, and when the computer program is executed by the processor, the communication apparatus performs the method in any one of the first aspects.

[0045] In a sixth aspect, a communication apparatus is provided, comprising a processor, a memory, and a computer program; the computer program is stored in the memory, and when the computer program is executed by the processor, the communication apparatus performs the method of any one of the above second aspects, or performs the method of any one of the above third aspects.

[0046] In a seventh aspect, a computer readable storage medium is provided, comprising a computer program, when the computer program is run on an electronic device, the electronic device performs the method of any one of the above first aspects, or performs the method of any one of the above second aspects, or performs the method of any one of the above third aspects.

[0047] In an eighth aspect, a computer program product is provided, when it is run on an electronic device, the electronic device performs the method of any one of the above first aspects, or performs the method of any one of the above second aspects, or performs the method of any one of the above third aspects.

[0048] In a ninth aspect, a chip system is provided, comprising a memory for storing a computer program, and a processor; when the processor invokes and runs the computer program from the memory, the electronic device installed with the chip system performs the method of any one of the above first aspects, or performs the method of any one of the above second aspects, or performs the method of any one of the above third aspects.

[0049] The beneficial effects of the above second to ninth aspects can refer to the beneficial effects of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 Fig. 1 is a schematic diagram of a positioning architecture of a 5G core network for an NG-RAN;

[0051] Figure 2 Fig. 2 is a schematic diagram of a PRS pattern in a cellular network;

[0052] Figure 3 Fig. 3 is a schematic diagram of sidelink resources in an embodiment of the present application;

[0053] Figure 4 Fig. 4 is a schematic diagram of system architecture in several possible sidelink positioning scenarios applicable to embodiments of the present application;

[0054] Figure 5a 、 Figure 5b 、 Figure 5c 、 Figure 5d 、 Figure 5e 、 Figure 5f, Figure 5g , Figure 5h are respectively schematic diagrams of sidelink positioning reference signal resource allocation in Example One of the present application;

[0055] Figure 6a , Figure 6b is a schematic diagram of distribution of PSCCH resource and sidelink positioning reference signal resource in an embodiment of the present application;

[0056] Figure 7a , Figure 7b , Figure 7c , Figure 7d , Figure 7e , Figure 7f , Figure 7g , Figure 7h are respectively schematic diagrams of sidelink positioning reference signal resource allocation in Example Two of the present application;

[0057] Figure 8a , Figure 8b , Figure 8c , Figure 8d , Figure 8e , Figure 8f , Figure 8g , Figure 8h are respectively schematic diagrams of sidelink positioning reference signal resource allocation in Example Three of the present application;

[0058] Figure 9a , Figure 9b , Figure 9c , Figure 9d , Figure 9e , Figure 9f , Figure 9g , Figure 9h are respectively schematic diagrams of sidelink positioning reference signal resource allocation in Example Four of the present application;

[0059] Figure 10a , Figure 10b , Figure 10c , Figure 10d , Figure 10e , Figure 10f , Figure 10g , Figure 10h are respectively schematic diagrams of sidelink positioning reference signal resource allocation in Example Five of the present application;

[0060] Figure 11 is a flow schematic diagram of a sidelink positioning reference signal resource allocation method controlled by a network provided by an embodiment of the present application;

[0061] Figure 12 is a flow schematic diagram of a terminal self-generated selection of sidelink positioning reference signal resource provided by an embodiment of the present application;

[0062] Figure 13A structural schematic diagram of a communication apparatus provided by an embodiment of the present application is shown in FIG. 1.

[0063] Figure 14 A structural schematic diagram of a communication apparatus provided by another embodiment of the present application is shown in FIG. 2.

[0064] Figure 15 A structural schematic diagram of a communication apparatus provided by another embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “one or more,” in the embodiments of the present application, refer to one, two, or more than two; “and / or” describes the associated objects in the association relationship, which means that there can be three kinds of relationships; for example, A and / or B can mean that A exists alone, A and B exist together, B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0066] In the present specification, the reference to “one embodiment” or “some embodiments” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, the appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in additional embodiments,” and so on, in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specifically noted. The terms “comprising,” “including,” “having,” and their variants, mean “including but not limited to,” unless otherwise specifically noted.

[0067] The plurality referred to in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the terms “first,” “second,” and the like are used only for the purpose of distinguishing the described objects, and cannot be understood as indicating or implying relative importance or indicating or implying an order.

[0068] Figure 1A positioning architecture diagram of a 5G core network of a next-generation-radio access network (NG-RAN) is shown. In the positioning network architecture of the NG-RAN, an access and mobility function (AMF) entity receives a positioning service request initiated by other network elements in the network about a certain terminal (user equipment, UE). The AMF entity sends the received positioning service request to a location management function (LMF) entity, which is responsible for processing the received positioning service request and initiating the related positioning procedure. The NG-RAN access network includes 4G sites (ng-eNB) and 5G sites (gNB) connected to the 5G core network. The NG-RAN is responsible for sending and receiving positioning reference signals and obtaining related measurement information.

[0069] The ng-eNB is a device or apparatus deployed in a wireless access network to meet the 4G standard and provide wireless communication functions for terminals. The ng-eNB can include various forms of base stations, access points, etc. The ng-eNB can also be a transmission and reception point (TRP) that transmits and receives reference signals.

[0070] The gNB is a device or apparatus deployed in a wireless access network to meet the 5G standard and provide wireless communication functions for terminals. The gNB can include various forms of base stations, access points, etc. The gNB can also be a TRP that transmits and receives reference signals, or a transmission measurement function (TMF) entity, etc.

[0071] The above architecture can also include an enhanced serving mobile location center (E-SMLC). The E-SMLC is a network element, module or component in a 4G core network that provides positioning functions.

[0072] The above architecture can also include a service location protocol (SLP) entity. The SLP is a network element, module or component in a 4G core network that processes user plane security positioning protocols.

[0073] Based on the above system architecture, the PRS of the cellular network supports 2-comb, 4-comb, 6-comb and 12-comb, which respectively occupy 2 symbols, 4 symbols, 6 symbols or 12 symbols, and the number of symbols is an integer multiple of the number of combs. The PRS resource is configured by the long-term evolution positioning protocol (LPP) layer, including the following parameters: comb size, first symbol in a slot, number of symbols, comb offset for the first symbol, slot offset with respect to the first slot of a DL PRS resource set, QCL source, etc.

[0074] In the cellular network, if there are multiple users in a slot, different combs can be multiplexed by multiple users in a slot, and multiple PRS resources can be sent in the same slot. Figure 2 An exemplary schematic diagram of a PRS pattern in a cellular network is shown. Figure 2 The cross-hatched squares represent the resource elements (REs) occupied by the PRS.

[0075] In the positioning scenario of sidelink communication, the time domain resource for sidelink (SL) transmission is in units of slots, SL mini-slots are not supported, and the number of symbols that the system can occupy in each slot is no longer 14 orthogonal frequency division multiplexing (OFDM) symbols in the cellular system, but can be as few as 7 symbols and as many as 14 symbols. Figure 3 An exemplary schematic diagram of a slot including 7 symbols for sidelink is shown, the first symbol of the 7 symbols can be an automatic gain control (AGC) symbol, and the last symbol can be a gap (GAP) symbol. The AGC symbol is used to adjust the operating point at the receiving end, so that the gain of the amplification circuit is automatically adjusted with the signal strength, and the AGC symbol can transmit data or not transmit data; the GAP symbol is a time interval, and the time is used to perform a transmit-receive conversion.

[0076] The positioning reference signal resource allocation method in the cellular network is not applicable to the sidelink communication scenario. To this end, the embodiments of the present application provide a sidelink positioning reference signal resource allocation method and related devices that can implement the method. The embodiments of the present application can implement resource allocation of reference signals for positioning on sidelink.

[0077] In the sidelink communication scenario, the reference signal for positioning can be a sidelink positioning reference signal, or a PRS (positioning reference signal), or a SL-PRS, or other reference signals, which are not limited by the embodiments of the present application.

[0078] The embodiments of the present application are described below in conjunction with the accompanying drawings.

[0079] The technical solutions provided by the embodiments of the present application are mainly applicable to a wireless communication system. The wireless communication system can comply with the wireless communication standard of the third generation partnership project (3GPP). For example, the solutions provided by the embodiments of the present application can be applied to a fourth generation (4G) communication system, such as a long term evolution (LTE) communication system, and can also be applied to a fifth generation (5G) communication system, such as a 5G new radio (NR) communication system, or to future various communication systems, such as a sixth generation (6G) communication system. The technical solutions provided by the embodiments of the present application can also comply with other wireless communication standards, such as the wireless communication standards of the Institute of Electrical and Electronics Engineers (IEEE) 802 series (such as 802.11, 802.15, or 802.20).

[0080] The method provided by the embodiments of the present application can also be applied to a Bluetooth system, a Wi-Fi system, a LoRa system, or a vehicle to everything (V2X) system. The method provided by the embodiments of the present application can also be applied to a satellite communication system, wherein the satellite communication system can be integrated with the above-mentioned communication systems.

[0081] Figure 4 Exemplary system architecture diagrams in several possible sidelink positioning scenarios to which the embodiments of the present application are applicable are shown. Figure 4 The embodiments of the present application are described below in conjunction with the accompanying drawings.

[0082] Figure 4 Figure (a) shows an out-of-coverage architecture where terminal 10 and terminal 20 establish a direct communication connection, but neither terminal 10 nor terminal 20 establishes a connection with the network device. Terminal 10 and terminal 20 can achieve mutual positioning by sending lateral link positioning reference signals (such as lateral positioning reference signals) for ranging or angle measurement.

[0083] Figure 4 Figure (b) illustrates that terminal 30 achieves positioning by receiving sidelink positioning reference signals (e.g., sidelink positioning reference signals) sent by multiple roadside units (RSUs) (such as RSU 1, RSU 2, and RSU 3 shown in the figure). An RSU is a roadside unit deployed along the roadside that satisfies sidelink communication / positioning related protocols and can provide wireless communication functionality to the terminal. RSUs can be various forms of roadside sites, access points, sidelink devices, etc.

[0084] Figure 4 (c) shows that when terminals 40 and 50 are within the network coverage area, under the control of base station 60, they perform mutual ranging or angle measurement by sending sidelink positioning reference signals (such as sidelink positioning reference signals), and send the measurement results to the LMF 70 of the core network through base station 60 to achieve positioning.

[0085] The terminal in this application embodiment (e.g.) Figure 4The terminal in each scenario (and the first terminal, the second terminal, etc. involved in the subsequent scenarios) can include a device that provides voice and / or data connectivity to a user, and can include a handset, a device that connects to a wireless modem, etc. The terminal can include a user equipment (UE), a wireless terminal, a mobile terminal, a device-to-device (D2D) terminal, a vehicle to everything (V2X) terminal, a machine-to-machine (M2M) / machine-type communications (MTC) terminal, an internet of things (IoT) terminal, a subscriber unit, a subscriber station, a mobile station, a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a user device, etc. For example, a terminal can include a cellular phone (also referred to as a "cell" phone), a computer with a mobile termination, a portable, pocket, handheld, computer-included mobile device, etc. For example, a personal communication service (PCS) terminal, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. A terminal can also be a tablet or a computer with wireless transceiver function. A terminal can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, etc.Also included are constrained devices, such as devices with lower power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities, etc. For example, information sensing devices such as bar codes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners, etc.

[0086] The network device in the embodiments of the present application refers to an access network (AN) device (for example, a base station). The access network device can refer to a device in the access network that communicates with a wireless terminal through one or more cells over the air interface. For example, the access network device can include an evolved NodeB (NodeB or eNB or e-NodeB) in a long term evolution (LTE) system or long term evolution-advanced (LTE-A), or can also include a next generation NodeB (gNB) in a new radio (NR) system of the 5th generation mobile communication technology (5G), or can also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system. The embodiments of the present application are not limited.

[0087] The eNB can include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, wearable devices, and vehicle-mounted devices. The eNB can also be a transmission and reception point (TRP). The gNB can include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, wearable devices, and vehicle-mounted devices. The gNB can also be a TRP and a transmission measurement function (TMF). The gNB can include a CU and a DU integrated on the gNB.

[0088] In the embodiments of the present application, one time slot can include one sidelink positioning reference signal resource group or multiple time division multiplexed sidelink positioning reference signal resource groups. It can be understood that the time slot can be a time slot in a 5G cellular system, or a sidelink time slot. Optionally, the sidelink time slot can include at least 7 symbols and at most 14 symbols. Optionally, on the licensed spectrum, the time slot can also be a time slot containing uplink, downlink, and sidelink symbols, wherein part or all of the symbols can be used for sidelink transmission, and the sidelink symbol can be a subset of the uplink symbol. Optionally, the time slot is a first time slot, and if the first time slot is a time slot of the sidelink symbol, the first time slot can include at least 7 symbols and at most 14 symbols.

[0089] One sidelink positioning reference signal resource group corresponds to one symbol set. It can be understood that the symbol set can also be referred to as a symbol collection, and one sidelink positioning reference signal resource group corresponds to one symbol set, which can also be expressed as one sidelink positioning reference signal resource group occupies one symbol collection, which means that the time domain resource of the sidelink positioning reference signal resource group includes multiple symbols, and the multiple symbols form a symbol set. Optionally, the symbols in one symbol set can be continuous or discontinuous. It can be understood that the continuous symbol means that the index value of the symbol is continuous, and the discontinuous symbol means that the index value of the symbol is discontinuous. Optionally, the symbol collections occupied by different sidelink positioning reference signal resource groups do not overlap, in other words, different sidelink positioning reference signal resource groups are time division multiplexed.

[0090] Optionally, the symbols for sidelink in the time slot or the symbols in the time slot can include AGC symbols, or include GAP symbols, or include AGC symbols and GAP symbols, or neither include AGC symbols nor GAP symbols.

[0091] Optionally, the symbol set corresponding to one sidelink positioning reference signal resource group can include AGC symbols and GAP symbols, or neither include AGC symbols nor GAP symbols. For example, if the symbol set corresponding to one sidelink positioning reference signal resource group includes AGC symbols and GAP symbols, the first symbol is an AGC symbol and the last symbol is a GAP symbol.

[0092] Optionally, one sidelink positioning reference signal resource group can include one or more frequency division multiplexed sidelink positioning reference signal resources, and the multiple frequency division multiplexed sidelink positioning reference signal resources correspond to the same symbol set.

[0093] In the embodiments of the present application, the number of sidelink positioning reference signal resource groups included in a time slot can be determined by the number of symbols for sidelink in the time slot and a set threshold. Specifically, the number of sidelink positioning reference signal resource groups included in a time slot is determined by the size relationship between the number of symbols for sidelink in the time slot and the set threshold. The set threshold includes at least one threshold.

[0094] Optionally, the set threshold can be predetermined by the system or configured through network signaling, such as being configured through high-layer signaling.

[0095] Optionally, the network signaling can be high-layer signaling from a network device (such as a base station), such as radio resource control (RRC) signaling or media access control (MAC) signaling. For example, the network device (such as the base station) can send the set threshold to the terminal through RRC signaling. When the terminal needs to allocate resources for positioning reference signals for other terminals in a sidelink communication scenario, the number of sidelink positioning reference signal resource groups included in the time slot can be determined according to the size relationship between the set threshold and the number of symbols for sidelink in the time slot, so that the sidelink positioning reference signal resources for other terminals are allocated according to the sidelink positioning reference signal resource groups.

[0096] Optionally, the network signaling can be high-layer signaling from a core network device (such as an LMF), such as LPP signaling.

[0097] Optionally, the network signaling can be signaling from a terminal, such as PC5-RRC signaling.

[0098] In a possible implementation, the set threshold includes one threshold, which is referred to as a first threshold in the embodiments of the present application. For the convenience of description, the first threshold is referred to as a first threshold N. The first threshold N is a positive integer. The value range of the first threshold N is greater than or equal to M nin and less than or equal to M max . Wherein, M nin represents the minimum value of the number of symbols for sidelink in a time slot, and M max represents the maximum value of the number of symbols for sidelink in a time slot. For example, M nin = 7 and M max = 14. For example, the value of the first threshold N can be N = 9, or N = 10, or N = 11. Of course, the value of the first threshold N can also be one of 7, 8, 12, 13, and 14, which are not listed one by one here.

[0099] The size relationship between the number of symbols for sidelink in a slot and the first threshold N with respect to the first threshold N can include one of the following two cases:

[0100] Case a1: the number of symbols for sidelink in a slot is less than or equal to the first threshold N;

[0101] Case a2: the number of symbols for sidelink in a slot is greater than the first threshold N.

[0102] If the number of symbols for sidelink in a slot meets the above case a1, the slot includes one sidelink positioning reference signal resource group. Optionally, the symbol set corresponding to the sidelink positioning reference signal resource group can include all symbols for sidelink in the slot.

[0103] If the number of symbols for sidelink in a slot meets the above case a2, the slot includes two sidelink positioning reference signal resource groups, and the two sidelink positioning reference signal resource groups are time-division multiplexed. The two resource groups include a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group. The first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The two sidelink positioning reference signal resource groups are time-division multiplexed, which means that the first symbol set corresponding to the first sidelink positioning reference signal resource group does not overlap with the second symbol set corresponding to the second sidelink positioning reference signal resource group. Optionally, the symbols in the first symbol set and the second symbol set can include all symbols for sidelink in the slot. In the embodiments of the present application, the first sidelink positioning reference signal resource group is the earlier sidelink positioning reference signal resource group in the slot.

[0104] Optionally, when the slot includes two sidelink positioning reference signal resource groups, the number of symbols in the symbol set corresponding to the two sidelink positioning reference signal resource groups can be the same or different.

[0105] For example, in the case where the number of symbols for sidelink in a slot is even, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group can be the same as the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group. In the case where the number of symbols for sidelink in a slot is odd, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group can be greater than or less than the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group.

[0106] Optionally, in the case that the number of symbols in a slot for sidelink is odd, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group is one more than the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group. Since when there is a physical sidelink control channel (PSCCH) call for aperiodic PRS resources in a slot, it generally occupies the first few symbol resources in the slot, therefore, by using the above resource allocation manner, the coverage of the two sidelink positioning reference signal resource groups can be ensured to be as same as possible.

[0107] In the above implementation, a first threshold value is configured by network signaling or defined by protocol standard, so that the communication device (such as a base station or a terminal) can determine the number of resource groups of sidelink positioning reference signals in the time domain according to the number of symbols in a slot for sidelink and the first threshold value, thereby eliminating the signaling overhead of high-level configuration of sidelink positioning reference signal resources, and also improving user multiplexing capacity. On the other hand, compared with the time domain resources for sidelink transmission currently in units of slots, which do not support sidelink mini-slots, the embodiments of the present application can allocate time domain resources in a slot, thereby improving user multiplexing capacity.

[0108] In a possible implementation, the set threshold value includes two threshold values, referred to as a second threshold value and a third threshold value in the embodiments of the present application. For the sake of description, the second threshold value is referred to as a second threshold value N1, and the third threshold value is referred to as a third threshold value N2. The second threshold value N1 and the third threshold value N2 are positive integers, and the second threshold value N1 is less than the third threshold value N2. The value range of the second threshold value N1 is greater than or equal to M nin , and less than the third threshold value N2; the value range of the third threshold value N2 is greater than the second threshold value N1, and less than or equal to M max . Wherein, M nin represents the minimum value of the number of symbols for sidelink in a slot, M max represents the maximum value of the number of symbols for sidelink in a slot. Exemplarily, M nin = 7, and M max = 14. For example, the values of the second threshold value N1 and the third threshold value N2 can be N1 = 9 and N2 = 13; or the values of the second threshold value N1 and the third threshold value N2 can be N1 = 10 and N2 = 13. In a combination form of (N1, N2), the values of the second threshold value N1 and the third threshold value N2 can also be one of the following combinations (7, 13), (8, 13), (9, 12), (10, 12), (7, 12), (8, 12), (8, 11), (9, 14), and the like, which will not be listed one by one here.

[0109] The size relationship between the number of symbols for sidelink in a slot and the second threshold N1 and the third threshold N2 relative to the second threshold N1 and the third threshold N2 can include one of the following three cases:

[0110] Case b1: the number of symbols for sidelink in a slot is less than or equal to the second threshold N1;

[0111] Case b2: the number of symbols for sidelink in a slot is greater than the second threshold N1 and less than or equal to the third threshold N2;

[0112] Case b3: the number of symbols for sidelink in a slot is greater than the third threshold N2.

[0113] If the number of symbols for sidelink in a slot meets the above case b1, the slot includes one sidelink positioning reference signal resource group. Optionally, the symbol set corresponding to the sidelink positioning reference signal resource group can include all symbols for sidelink in the slot.

[0114] If the number of symbols for sidelink in a slot meets the above case b2, the slot includes two sidelink positioning reference signal resource groups, and the two sidelink positioning reference signal resource groups are time-division multiplexed. The two sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The two sidelink positioning reference signal resource groups are time-division multiplexed, which means that the first symbol set corresponding to the first sidelink positioning reference signal resource group does not overlap with the second symbol set corresponding to the second sidelink positioning reference signal resource group. Optionally, the symbols in the first symbol set and the second symbol set can include all symbols for sidelink in the slot. In the embodiments of the present application, the first sidelink positioning reference signal resource group is the earlier sidelink positioning reference signal resource group in the slot.

[0115] Optionally, when the slot includes two sidelink positioning reference signal resource groups, the number of symbols in the symbol set corresponding to the two sidelink positioning reference signal resource groups can be the same or different.

[0116] For example, in the case where the number of symbols for sidelink in a slot is even, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group can be the same as the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group. In the case where the number of symbols for sidelink in a slot is odd, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group can be greater than or less than the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group.

[0117] Optionally, in the case that the number of symbols for sidelink in a slot is odd, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group is one more than the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group, so that the coverage of the two sidelink positioning reference signal resource groups can be made as identical as possible.

[0118] If the number of symbols for sidelink in a slot meets the above case b3, the slot includes three sidelink positioning reference signal resource groups, and the three sidelink positioning reference signal resource groups are time-division multiplexed. The three sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, the second sidelink positioning reference signal resource group corresponds to a second symbol set, and the third sidelink positioning reference signal resource group corresponds to a third symbol set. The three sidelink positioning reference signal resource groups are time-division multiplexed, that is, the first symbol set corresponding to the first sidelink positioning reference signal resource group, the second symbol set corresponding to the second sidelink positioning reference signal resource group, and the third symbol set corresponding to the third sidelink positioning reference signal resource group do not overlap. Optionally, the symbols in the first symbol set, the second symbol set, and the third symbol set can include all symbols for sidelink in the slot. In the embodiment of the present application, the first sidelink positioning reference signal resource group is the earlier sidelink positioning reference signal resource group in the slot compared with the second sidelink positioning reference signal resource group and the third sidelink positioning reference signal resource group; the second sidelink positioning reference signal resource group is earlier in time domain compared with the third sidelink positioning reference signal resource group.

[0119] Optionally, when a slot includes three sidelink positioning reference signal resource groups, the number of symbols in the symbol sets corresponding to the three sidelink positioning reference signal resource groups can be the same or different.

[0120] For example, in the case that the number of symbols for sidelink in a slot is an integer multiple of 3, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group, the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group, and the number of symbols in the third symbol set corresponding to the third sidelink positioning reference signal resource group are the same.

[0121] Optionally, in the case that the number of symbols for sidelink in a slot is not an integer multiple of 3, the number of symbols in the first symbol set and the second symbol set is the same, and the number of symbols in the first symbol set or the second symbol set is one more than the number of symbols in the third symbol set; or, the number of symbols in the second symbol set and the third symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set and the third symbol set. In this way, the coverage of the three sidelink positioning reference signal resource groups can be made as uniform as possible.

[0122] In the above implementation, the second threshold and the third threshold are configured through network signaling or defined by a protocol standard, so that the communication device (such as a base station or a terminal) can determine the number of sidelink positioning reference signal resources in the time domain according to the number of symbols for sidelink in a slot and the two thresholds, thereby eliminating the signaling overhead of high-level configuration of sidelink positioning reference signal resources, and improving user multiplexing capacity. Compared with the current resource allocation mode of positioning reference signals, the embodiment of the application designs a resource allocation mode of sidelink positioning reference signals according to the number of symbols in a slot, which does not require high-level signaling configuration and reduces the overhead. On the other hand, compared with the current time domain resource for sidelink transmission in units of slots, which does not support sidelink mini-slot, the embodiment of the application allocates time domain resources in a slot, thereby improving user multiplexing capacity.

[0123] In a possible implementation, the set threshold includes three thresholds, which are referred to as a fourth threshold, a fifth threshold and a sixth threshold in the embodiment of the application. The fourth threshold, the fifth threshold and the sixth threshold are all positive integers, and the fourth threshold is less than the fifth threshold, and the fifth threshold is less than the sixth threshold. The value range of the fourth threshold is greater than or equal to M nin , and less than the fifth threshold; the value range of the sixth threshold is greater than the fifth threshold, and less than or equal to M max . Wherein, M nin represents the minimum value of the number of symbols in a slot, M max represents the maximum value of the number of symbols in a slot. Exemplarily, M nin = 7, M max = 14. For example, a combination of the three thresholds is represented as (fourth threshold, fifth threshold, sixth threshold), and the values of the above three thresholds can be one of the following combinations: (7, 9, 14), (7, 10, 14), (7, 11, 14), (8, 9, 14), (7, 9, 13), etc. Here, they will not be listed one by one.

[0124] With respect to the fourth threshold, the fifth threshold and the sixth threshold, the size relationship between the number of symbols in a slot and the three thresholds can include one of the following four cases:

[0125] Case c1: the number of symbols for sidelink within a slot is less than or equal to a fourth threshold N1;

[0126] Case c2: the number of symbols for sidelink within a slot is greater than the fourth threshold and less than or equal to a fifth threshold;

[0127] Case c3: the number of symbols for sidelink within a slot is greater than the fifth threshold and less than or equal to a sixth threshold;

[0128] Case c4: the number of symbols for sidelink within a slot is greater than the sixth threshold.

[0129] If the number of symbols for sidelink within a slot meets the above case c1, similar to the above case a1 or case b1, one sidelink positioning reference signal resource group is included within the slot.

[0130] If the number of symbols for sidelink within a slot meets the above case c2, similar to the above case a2 or case b2, two sidelink positioning reference signal resource groups are included within the slot, and the two sidelink positioning reference signal resource groups are time-division multiplexed.

[0131] If the number of symbols for sidelink within a slot meets the above case c3, similar to the above case b3, three sidelink positioning reference signal resource groups are included within the slot, and the three sidelink positioning reference signal resource groups are time-division multiplexed.

[0132] If the number of symbols for sidelink within a slot meets the above case c4, four sidelink positioning reference signal resource groups are included within the slot, and the four sidelink positioning reference signal resource groups are time-division multiplexed. The four sidelink positioning reference signal resource groups include a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, a third sidelink positioning reference signal resource group, and a fourth sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, the second sidelink positioning reference signal resource group corresponds to a second symbol set, the third sidelink positioning reference signal resource group corresponds to a third symbol set, and the fourth sidelink positioning reference signal resource group corresponds to a fourth symbol set. Wherein, the time domain position of the first symbol set is before the time domain position of the second symbol set, the time domain position of the second symbol set is before the time domain position of the third symbol set, and the time domain position of the third symbol set is before the time domain position of the fourth symbol set.

[0133] Optionally, when four sidelink positioning reference signal resource groups are included within a slot, the number of symbols in the symbol sets corresponding to the four sidelink positioning reference signal resource groups can be the same or different.

[0134] For example, in the case that the number of symbols for sidelink in a slot is an integer multiple of 4, the number of symbols in the first symbol set corresponding to the first sidelink positioning reference signal resource group, the number of symbols in the second symbol set corresponding to the second sidelink positioning reference signal resource group, the number of symbols in the third symbol set corresponding to the third sidelink positioning reference signal resource group, and the number of symbols in the fourth symbol set corresponding to the fourth sidelink positioning reference signal resource group are the same.

[0135] Optionally, in the case that the number of symbols for sidelink in a slot is not an integer multiple of 4, the number of symbols in the first symbol set is one more than the number of symbols in the second symbol set, the number of symbols in the second symbol set, the third symbol set and the fourth symbol set are the same; or, the number of symbols in the first symbol set and the second symbol set is the same, the number of symbols in the third symbol set and the fourth symbol set is the same, and the number of symbols in the first symbol set is one more than the number of symbols in the third symbol set; or, the number of symbols in the second symbol set, the third symbol set and the fourth symbol set is the same, and the number of symbols in the first symbol set is two more than the number of symbols in the second symbol set, the third symbol set and the fourth symbol set.

[0136] It should be noted that only the case where the number of thresholds is 1 or 2 or 3 is listed above, and the number of thresholds can be more than the above cases, which is not limited by the embodiments of the present application.

[0137] The following examples illustrate the method of determining the number of sidelink positioning reference signal resource groups in a slot based on the first threshold N and the number of symbols for sidelink in a slot.

[0138] Example 1: the first threshold N = 9.

[0139] According to the size relationship between the number of symbols for sidelink in a slot and the first threshold N = 9, the number of sidelink positioning reference signal resource groups included in a slot can include two cases:

[0140] Case 1-1: in the case that the number of symbols for sidelink in a slot is less than or equal to the first threshold N = 9, and the symbol set corresponding to one sidelink positioning reference signal resource includes AGC symbols and GAP symbols, the slot includes only one sidelink positioning reference signal resource group in the time domain.

[0141] Optionally, the sidelink positioning reference signal resource group can occupy all symbols for sidelink in a slot.

[0142] Optionally, the sidelink positioning reference signal resource group can include a plurality of frequency division multiplexing sidelink positioning reference signal resources for allocation to different terminals.

[0143] For example, Figure 5a ,Figure 5b and Figure 5c The diagrams above illustrate the sideline positioning reference signal resource group under several different values ​​of the number of symbols used for the sideline link in the time slot in case 1-1. Figure 5a , Figure 5b and Figure 5c In this context, "SL-PRS" represents the lateral positioning reference signal.

[0144] like Figure 5a As shown, when the number of symbols used for the lateral link in a time slot is equal to 7, since the number of symbols is less than the first threshold N=9, the time slot includes a lateral positioning reference signal resource group. The symbol set corresponding to the lateral positioning reference signal resource group includes all symbols used for the lateral link in the time slot. The first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 5 symbols between the AGC symbol and the GAP symbol are used to transmit the lateral positioning reference signal.

[0145] like Figure 5b As shown, when the number of symbols used for the side link in a time slot is equal to 8, since the number of symbols is less than the first threshold N=9, the time slot includes a side positioning reference signal resource group. The symbol set corresponding to the side positioning reference signal resource group includes all symbols used for the side link in the time slot. The first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 6 symbols between the AGC symbol and the GAP symbol are used to transmit the side positioning reference signal.

[0146] like Figure 5c As shown, when the number of symbols used for the lateral link in a time slot is equal to 9, since the number of symbols is equal to the first threshold N = 9, the time slot includes a lateral positioning reference signal resource group. The symbol set corresponding to the lateral positioning reference signal resource group includes all symbols used for the lateral link in the time slot. Among them, the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 7 symbols between the AGC symbol and the GAP symbol are used to transmit the lateral positioning reference signal.

[0147] Case 1-2: If the number of symbols used for the lateral link within a time slot is greater than the first threshold N=9, and the symbol set corresponding to a lateral positioning reference signal resource includes AGC symbols and GAP symbols, the time slot includes two lateral positioning reference signal resource groups in the time domain, and these two lateral positioning reference signal resource groups are time-division multiplexed.

[0148] Optionally, each lateral positioning reference signal resource group may include multiple frequency division multiplexed lateral positioning reference signal resources for allocation to different terminals.

[0149] For example, Figure 5d ,Figure 5e and Figure 5f Figures 1-2 respectively show the schematic diagrams of the sidelink positioning reference signal resource group in the case that the number of symbols for sidelink within a slot is equal to 10, 12 and 14 respectively. Figure 5d 、 Figure 5e and Figure 5f The sidelink positioning reference signal is denoted as “SL-PRS” in

[0150] As shown in Figure 5d , when the number of symbols for sidelink within a slot is equal to 10, since the number of symbols is greater than the first threshold N = 9, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set respectively include 5 symbols. The first symbol in the first symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used for transmitting sidelink positioning reference signals. The first symbol in the second symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used for transmitting sidelink positioning reference signals.

[0151] As shown in Figure 5e , when the number of symbols for sidelink within a slot is equal to 12, since the number of symbols is greater than the first threshold N = 9, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set respectively include 6 symbols. The first symbol in the first symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals. The first symbol in the second symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals.

[0152] As shown in Figure 5f , when the number of symbols for sidelink within a slot is equal to 14, since the number of symbols is greater than the first threshold N = 9, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set respectively include 7 symbols. The first symbol in the first symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals. The first symbol in the second symbol set is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals.

[0153] When the number of symbols for sidelink within a slot is odd (such as 11), one of the following two resource allocation manners can be adopted. Figure 5g Figure 5g In some embodiments, the sidelink positioning reference signal is denoted as “SL-PRS”.

[0154] As shown in Figure 5g When the number of symbols for sidelink within a slot is equal to 11, since the number of symbols is greater than the first threshold N = 9, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. In the first allocation manner, the first symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 5 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used for transmitting sidelink positioning reference signals. In the second allocation manner, the first symbol set includes 5 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals.

[0155] When the number of symbols for sidelink within a slot is odd (such as 13), one of the following two resource allocation manners can be adopted. Figure 5h Figure 5h In some embodiments, the sidelink positioning reference signal is denoted as “SL-PRS”.

[0156] As shown in Figure 5h ​​As shown, when the number of symbols in the time slot for sidelink is equal to 13, since the number of symbols is greater than the first threshold N = 9, the time slot includes the first sidelink positioning reference signal resource group and the second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to the first symbol set, and the second sidelink positioning reference signal resource group corresponds to the second symbol set. In the first allocation mode, the first symbol set includes 7 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit sidelink positioning reference signals; the second symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit sidelink positioning reference signals. In the second allocation mode, the first symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit sidelink positioning reference signals; the second symbol set includes 7 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit sidelink positioning reference signals.

[0157] Optionally, in the case where the number of symbols in the time slot for sidelink is odd, the allocation mode in which the time domain resources (such as the number of symbols) of the first sidelink positioning reference signal group are one more than the time domain resources (such as the number of symbols) of the second sidelink positioning reference signal group can be preferentially selected, for example, when the number of symbols in the time slot for sidelink includes 11 symbols, the first allocation mode in Figure 5g is adopted, and when the number of symbols in the time slot for sidelink includes 13 symbols, the first allocation mode in Figure 5h is adopted. Because when PSCCH calls aperiodic sidelink positioning reference signal resources in the time slot, it generally occupies the first symbol resources in the time slot, as shown in Figure 6a and Figure 6b , in this case, the allocation mode in which the time domain resources (such as the number of symbols) of the first sidelink positioning reference signal group are one more than the time domain resources (such as the number of symbols) of the second sidelink positioning reference signal group can be preferentially selected, which can ensure that the coverage of the two groups of sidelink positioning reference signal resources is as same as possible.

[0158] Example two: the first threshold N = 10.

[0159] According to the size relationship between the number of symbols in the time slot for sidelink and the first threshold N = 10, the number of sidelink positioning reference signal resource groups included in the time slot can include two cases:

[0160] Case 2-1: In the case that the number of symbols for sidelink in a slot is less than or equal to a first threshold N = 10, and in the case that the symbol set corresponding to one sidelink positioning reference signal resource includes AGC symbol and GAP symbol, only one sidelink positioning reference signal resource group is included in the time domain in the slot.

[0161] Optionally, the sidelink positioning reference signal resource group can occupy all symbols for sidelink in a slot.

[0162] Optionally, the sidelink positioning reference signal resource group can include a plurality of frequency division multiplexing sidelink positioning reference signal resources for allocation to different terminals.

[0163] Exemplarily, Figure 7a , Figure 7b , Figure 7c and Figure 7d respectively show the schematic diagram of the sidelink positioning reference signal resource group in the case that the number of symbols for sidelink in a slot is different in the above-mentioned case 2-1. Figure 7a , Figure 7b , Figure 7c and Figure 7d in which “SL-PRS” represents a sidelink positioning reference signal.

[0164] As shown in Figure 7a , when the number of symbols for sidelink in a slot is equal to 7, since the number of symbols is less than the first threshold N = 10, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 5 symbols between the AGC symbol and the GAP symbol are used for transmitting sidelink positioning reference signals.

[0165] As shown in Figure 7b , when the number of symbols for sidelink in a slot is equal to 8, since the number of symbols is less than the first threshold N = 10, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 6 symbols between the AGC symbol and the GAP symbol are used for transmitting sidelink positioning reference signals.

[0166] As shown in Figure 7cAs shown in FIG. 6, when the number of symbols for sidelink in a slot is equal to 9, since the number of symbols is less than the first threshold N = 10, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 7 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals.

[0167] As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 10, since the number of symbols is equal to the first threshold N = 10, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 8 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals. Figure 7d

[0168] Case 2-2: In the case that the number of symbols for sidelink in a slot is greater than the first threshold N = 10, and one sidelink positioning reference signal resource set includes an AGC symbol and a GAP symbol, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group in the time domain.

[0169] Optionally, each sidelink positioning reference signal resource group can include a plurality of frequency division multiplexed sidelink positioning reference signal resources for allocation to different terminals.

[0170] Exemplarily, Figure 7e , Figure 7f FIGS. 8-10 respectively show the schematic diagrams of the sidelink positioning reference signal resource group in the case of several different values of the number of symbols for sidelink in a slot in the above case 2-2. Figure 7e , Figure 7f SL-PRS represents sidelink positioning reference signal.

[0171] As shown in FIG. 11, when the number of symbols for sidelink in a slot is equal to 11, since the number of symbols is greater than the first threshold N = 10, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, and the two sidelink positioning reference signal resource groups are time division multiplexed. Figure 7e ​As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 12, since the number of symbols is greater than the first threshold N = 10, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set each include 6 symbols. The first symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. The second symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals.

[0172] As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 12, since the number of symbols is greater than the first threshold N = 10, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set each include 6 symbols. The first symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. The second symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. Figure 7f As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 12, since the number of symbols is greater than the first threshold N = 10, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set each include 6 symbols. The first symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. The second symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals.

[0173] When the number of symbols for sidelink in a slot is an odd number (such as 11), one of the following two resource allocation modes can be used as shown in FIG. 8. Figure 7g Figure 7g “SL-PRS” represents a sidelink positioning reference signal.

[0174] As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 12, since the number of symbols is greater than the first threshold N = 10, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set each include 6 symbols. The first symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. The second symbol set has an AGC symbol as the first symbol, a GAP symbol as the last symbol, and 4 symbols in the middle for transmitting sidelink positioning reference signals. Figure 7g ​As shown, when the number of symbols used for the lateral link in a time slot is equal to 11, since the number of symbols is greater than the first threshold N = 10, the time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. In the first allocation method, the first symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals. In the second allocation method, the first symbol set includes 5 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals. By adopting the first allocation method described above, it can be ensured that the coverage of the two sets of lateral positioning reference signal resources is as similar as possible.

[0175] When the number of symbols used for side links within a time slot is odd (e.g., 13), the following can be used: Figure 7h This is one of the two resource allocation methods shown. Figure 7h The lateral positioning reference signal is referred to as "SL-PRS".

[0176] like Figure 7h As shown, when the number of symbols used for the lateral link within a time slot is equal to 13, since the number of symbols is greater than the first threshold N = 10, the time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. In the first allocation method, the first symbol set includes 7 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals. In the second allocation method, the first symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 7 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals. By adopting the first allocation method described above, it can be ensured that the coverage of the two sets of lateral positioning reference signal resources is as similar as possible.

[0177] Example 3: First threshold N = 11.

[0178] Based on the relationship between the number of symbols used for the sidelink within the time slot and the first threshold N=11, the number of sidelink positioning reference signal resource groups included in the time slot can include two cases:

[0179] Case 3-1: If the number of symbols used for the lateral link within a time slot is less than or equal to the first threshold N = 11, and the symbol set corresponding to a lateral positioning reference signal resource includes AGC symbols and GAP symbols, then the time slot includes only one lateral positioning reference signal resource group in the time domain.

[0180] Optionally, the sideline positioning reference signal resource group can occupy all symbols within the time slot used for the sideline link.

[0181] Optionally, the side-line positioning reference signal resource group may include multiple frequency-division multiplexed side-line positioning reference signal resources for allocation to different terminals.

[0182] For example, Figure 8a , Figure 8b , Figure 8c , Figure 8d and Figure 8e The diagrams above illustrate the sideline positioning reference signal resource group under several different values ​​of the number of symbols used for the sideline link in the time slot in case 3-1. Figure 8a , Figure 8b , Figure 8c , Figure 8d and Figure 8e The lateral positioning reference signal is referred to as "SL-PRS".

[0183] like Figure 8a As shown, when the number of symbols used for the lateral link in a time slot is equal to 7, since the number of symbols is less than the first threshold N = 11, the time slot includes a lateral positioning reference signal resource group. The symbol set corresponding to the lateral positioning reference signal resource group includes all symbols used for the lateral link in the time slot. Among them, the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 5 symbols between the AGC symbol and the GAP symbol are used to transmit the lateral positioning reference signal.

[0184] like Figure 8bAs shown in FIG. 6, when the number of symbols for sidelink in a slot is equal to 8, since the number of symbols is less than the first threshold N = 11, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 6 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals.

[0185] As shown in FIG. 7, when the number of symbols for sidelink in a slot is equal to 9, since the number of symbols is less than the first threshold N = 11, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 7 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals. Figure 8c As shown in FIG. 8, when the number of symbols for sidelink in a slot is equal to 10, since the number of symbols is less than the first threshold N = 11, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 8 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals.

[0186] Figure 8d As shown in FIG. 9, when the number of symbols for sidelink in a slot is equal to 11, since the number of symbols is equal to the first threshold N = 11, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 9 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals.

[0187] As shown in FIG. 10, when the number of symbols for sidelink in a slot is equal to 11, since the number of symbols is equal to the first threshold N = 11, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 9 symbols between the AGC symbol and the GAP symbol are used to transmit sidelink positioning reference signals. Figure 8e Case 3-2: In the case that the number of symbols for sidelink in a slot is greater than the first threshold N = 11, and the symbol set corresponding to one sidelink positioning reference signal resource includes an AGC symbol and a GAP symbol, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group in the time domain, and the two sidelink positioning reference signal resource groups are time-division multiplexed.

[0188] Optionally, each sidelink positioning reference signal resource group can include a plurality of frequency-division multiplexed sidelink positioning reference signal resources for allocation to different terminals.

[0189] Optionally, each sidelink positioning reference signal resource group can include a plurality of frequency-division multiplexed sidelink positioning reference signal resources for allocation to different terminals.​

[0190] For example, Figure 8f , Figure 8g The diagrams above illustrate the sideline positioning reference signal resource group under several different values ​​of the number of symbols used for the sideline link in the time slot in case 3-2. Figure 8f , Figure 8g The lateral positioning reference signal is referred to as "SL-PRS".

[0191] like Figure 8f As shown, when the number of symbols used for the lateral link within a time slot is equal to 12, since the number of symbols is greater than the first threshold N = 11, this time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. The first and second symbol sets each include 6 symbols. The first symbol in the first symbol set is the AGC symbol, the last symbol is the GAP symbol, and the four symbols in the middle are used to transmit lateral positioning reference signals.

[0192] like Figure 8g As shown, when the number of symbols used for the lateral link within a time slot is equal to 14, since the number of symbols is greater than the first threshold N = 11, this time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. The first and second symbol sets each include 7 symbols. The first symbol in the first symbol set is the AGC symbol, the last symbol is the GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals. The first symbol in the second symbol set is the AGC symbol, the last symbol is the GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals.

[0193] When the number of symbols used for side links within a time slot is odd (e.g., 13), the following can be used: Figure 8h This is one of the two resource allocation methods shown. Figure 8h The lateral positioning reference signal is referred to as "SL-PRS".

[0194] like Figure 8hAs shown in FIG. 2, when the number of symbols in the time slot for sidelink is equal to 13, since the number of symbols is greater than the first threshold N = 11, the time slot includes the first sidelink positioning reference signal resource group and the second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to the first symbol set, and the second sidelink positioning reference signal resource group corresponds to the second symbol set. In the first allocation mode, the first symbol set includes 7 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals. In the second allocation mode, the first symbol set includes 6 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 7 symbols, the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals. By using the above first allocation mode, the coverage of the two groups of sidelink positioning reference signal resources can be ensured to be as same as possible.

[0195] The following illustrates the method for determining the number of sidelink positioning reference signal resource groups in a time slot based on the second threshold N1 and the third threshold N2, and the number of symbols in the time slot.

[0196] Example Four: The second threshold N1 = 9, and the third threshold N2 = 13.

[0197] According to the size relationship between the number of symbols in the time slot for sidelink and the second threshold N1 = 9 and the third threshold N2 = 13, the number of sidelink positioning reference signal resource groups included in the time slot can include three cases:

[0198] Case 4-1: In the case that the number of symbols in the time slot for sidelink is less than or equal to the second threshold N1 = 9, and one sidelink positioning reference signal resource set includes AGC symbol and GAP symbol, the time slot includes only one sidelink positioning reference signal resource group in the time domain.

[0199] Optionally, the sidelink positioning reference signal resource group can occupy all symbols in the time slot for sidelink.

[0200] Optionally, the sidelink positioning reference signal resource group can include a plurality of frequency division multiplexing sidelink positioning reference signal resources for allocation to different terminals.

[0201] Exemplarily, Figure 9a 、 Figure 9b and Figure 9cFigures 4-1 to 4-3 respectively show the schematic diagrams of the sidelink positioning reference signal resource group in the case that the number of symbols in a slot is different. Figure 9a , Figure 9b and Figure 9c The sidelink positioning reference signal is denoted as “SL-PRS”.

[0202] As shown in FIG. 4-1, when the number of symbols in a slot for sidelink is equal to 7, since the number of symbols is less than the second threshold N1=9, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols in the slot for sidelink, wherein the first symbol is AGC symbol, the last symbol is GAP symbol, and the 5 symbols between AGC symbol and GAP symbol are used for transmitting sidelink positioning reference signal. Figure 9a

[0203] As shown in FIG. 4-2, when the number of symbols in a slot for sidelink is equal to 8, since the number of symbols is less than the second threshold N1=9, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols in the slot for sidelink, wherein the first symbol is AGC symbol, the last symbol is GAP symbol, and the 6 symbols between AGC symbol and GAP symbol are used for transmitting sidelink positioning reference signal. Figure 9b

[0204] As shown in FIG. 4-3, when the number of symbols in a slot for sidelink is equal to 9, since the number of symbols is equal to the second threshold N1=9, one sidelink positioning reference signal resource group is included in the slot, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols in the slot for sidelink, wherein the first symbol is AGC symbol, the last symbol is GAP symbol, and the 7 symbols between AGC symbol and GAP symbol are used for transmitting sidelink positioning reference signal. Figure 9c

[0205] Case 4-2: In the case that the number of symbols in a slot for sidelink is greater than the second threshold N1=9, less than or equal to the third threshold N2=13, and the symbol set corresponding to one sidelink positioning reference signal resource includes AGC symbol and GAP symbol, the first sidelink positioning reference signal resource group and the second sidelink positioning reference signal resource group are included in the slot in time domain, and the two sidelink positioning reference signal resource groups are time division multiplexed.

[0206] Optionally, a plurality of frequency division multiplexed sidelink positioning reference signal resources can be included in each sidelink positioning reference signal resource group, which are used for being allocated to different terminals.

[0207] Exemplarily, Figure 9d ,​​​Figure 9e 、 Figure 9f and Figure 9g respectively show the schematic diagrams of the sidelink positioning reference signal resource group in the case 4-2 described above, in the case of several different values of the number of symbols within a slot. Figure 9d 、 Figure 9e 、 Figure 9f and Figure 9g The sidelink positioning reference signal is denoted as "SL-PRS".

[0208] As shown in Figure 9d , when the number of symbols within a slot for sidelink is equal to 10, since the number of symbols is greater than the second threshold N1=9 and less than the third threshold N2=13, the first sidelink positioning reference signal resource group and the second sidelink positioning reference signal resource group are included within the slot, the first sidelink positioning reference signal resource group corresponds to the first symbol set, and the second sidelink positioning reference signal resource group corresponds to the second symbol set. The first symbol set and the second symbol set each include 5 symbols. The first symbol in the first symbol set is an AGC symbol, the last symbol is a GAP symbol, and the 3 symbols in the middle are used for transmitting the sidelink positioning reference signal. The first symbol in the second symbol set is an AGC symbol, the last symbol is a GAP symbol, and the 3 symbols in the middle are used for transmitting the sidelink positioning reference signal.

[0209] As shown in Figure 9e , when the number of symbols within a slot for sidelink is equal to 11, since the number of symbols is greater than the second threshold N1=9 and less than the third threshold N2=13, the first sidelink positioning reference signal resource group and the second sidelink positioning reference signal resource group are included within the slot, the first sidelink positioning reference signal resource group corresponds to the first symbol set, and the second sidelink positioning reference signal resource group corresponds to the second symbol set. In the first allocation mode, the first symbol set includes 6 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 4 symbols in the middle are used for transmitting the sidelink positioning reference signal; the second symbol set includes 5 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 3 symbols in the middle are used for transmitting the sidelink positioning reference signal. In the second allocation mode, the first symbol set includes 5 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 3 symbols in the middle are used for transmitting the sidelink positioning reference signal; the second symbol set includes 6 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the 4 symbols in the middle are used for transmitting the sidelink positioning reference signal. Adopting the first allocation mode described above can ensure that the coverage of the two groups of sidelink positioning reference signal resources is as same as possible.

[0210] As shown in Figure 9fAs shown, when the number of symbols in the slot for sidelink is equal to 12, since the number of symbols is greater than the second threshold N1=9 and less than the third threshold N2=13, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. The first symbol set and the second symbol set each include 6 symbols. The first symbol set has an AGC symbol as the first symbol and a GAP symbol as the last symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals. The second symbol set has an AGC symbol as the first symbol and a GAP symbol as the last symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals.

[0211] As shown in Figure 9g As shown, when the number of symbols in the slot for sidelink is equal to 13, since the number of symbols is equal to the third threshold N2=13, the slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group corresponds to a first symbol set, and the second sidelink positioning reference signal resource group corresponds to a second symbol set. In the first allocation mode, the first symbol set includes 7 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 6 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals. In the second allocation mode, the first symbol set includes 6 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used for transmitting sidelink positioning reference signals; the second symbol set includes 7 symbols, of which the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used for transmitting sidelink positioning reference signals. The above first allocation mode can ensure that the coverage of the two groups of sidelink positioning reference signal resources is as identical as possible.

[0212] Case 4-3: In the case where the number of symbols in the slot for sidelink is greater than the third threshold N2=13, and one sidelink positioning reference signal resource corresponds to a symbol set including an AGC symbol and a GAP symbol, the slot includes a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group in the time domain, and the three sidelink positioning reference signal resource groups are time division multiplexed.

[0213] Optionally, each sidelink positioning reference signal resource group can include a plurality of frequency division multiplexed sidelink positioning reference signal resources for allocation to different terminals.

[0214] As an example, Figure 9hThe diagram illustrates the lateral positioning reference signal resource group under several different values ​​of the number of symbols used for the lateral link within the time slot in case 4-3 above. Figure 9h The lateral positioning reference signal is referred to as "SL-PRS".

[0215] like Figure 9h As shown, when the number of symbols used for the side link in a time slot is equal to 14, since the number of symbols is greater than the third threshold N2 = 13, the time slot includes a first side link positioning reference signal resource group, a second side link positioning reference signal resource group, and a third side link positioning reference signal resource group. The first side link positioning reference signal resource group corresponds to the first symbol set, the second side link positioning reference signal resource group corresponds to the second symbol set, and the third side link positioning reference signal resource group corresponds to the third symbol set.

[0216] In the first allocation method, the first symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals.

[0217] In the second allocation method, the first symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals.

[0218] In the third allocation method, the first symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals.

[0219] By adopting the first allocation method described above, it can be ensured that the coverage of the three sets of lateral positioning reference signal resources is as similar as possible.

[0220] Example five: the second threshold N1 = 10, the third threshold N2 = 13.

[0221] According to the size relationship between the number of symbols for sidelink in a slot and the second threshold N1 = 10 and the third threshold N2 = 13, the number of sidelink positioning reference signal resource groups included in the slot can include three cases:

[0222] Case 5-1: in the case that the number of symbols for sidelink in a slot is less than or equal to the second threshold N1 = 9, and one sidelink positioning reference signal resource corresponds to a symbol set including AGC symbol and GAP symbol, the slot includes only one sidelink positioning reference signal resource group in the time domain.

[0223] Optionally, the sidelink positioning reference signal resource group can occupy all symbols for sidelink in the slot.

[0224] Optionally, the sidelink positioning reference signal resource group can include a plurality of frequency division multiplexing sidelink positioning reference signal resources for allocation to different terminals.

[0225] Exemplarily, Figure 10a , Figure 10b , Figure 10c and Figure 10d respectively show the schematic diagram of the sidelink positioning reference signal resource group in the case of several different values of the number of symbols in the slot in the above case 5-1. Figure 10a , Figure 10b , Figure 10c and Figure 10d SL-PRS represents sidelink positioning reference signal.

[0226] As shown in Figure 10a , when the number of symbols for sidelink in a slot is equal to 7, since the number of symbols is less than the second threshold N1 = 10, the slot includes one sidelink positioning reference signal resource group, and the symbol set corresponding to the sidelink positioning reference signal resource group includes all symbols for sidelink in the slot, wherein the first symbol is AGC symbol, the last symbol is GAP symbol, and the 5 symbols between AGC symbol and GAP symbol are used to transmit sidelink positioning reference signal.

[0227] As shown in Figure 10bAs shown, when the number of symbols used for the side link in a time slot is equal to 8, since the number of symbols is less than the second threshold N1 = 10, the time slot includes a side positioning reference signal resource group. The symbol set corresponding to the side positioning reference signal resource group includes all symbols used for the side link in the time slot. Among them, the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 6 symbols between the AGC symbol and the GAP symbol are used to transmit the side positioning reference signal.

[0228] like Figure 10c As shown, when the number of symbols used for the lateral link in a time slot is equal to 9, since the number of symbols is equal to the second threshold N1 = 10, the time slot includes a lateral positioning reference signal resource group. The symbol set corresponding to the lateral positioning reference signal resource group includes all symbols used for the lateral link in the time slot. Among them, the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 7 symbols between the AGC symbol and the GAP symbol are used to transmit the lateral positioning reference signal.

[0229] like Figure 10d As shown, when the number of symbols used for the lateral link in a time slot is equal to 10, since the number of symbols is equal to the second threshold N1 = 10, the time slot includes a lateral positioning reference signal resource group. The symbol set corresponding to the lateral positioning reference signal resource group includes all symbols used for the lateral link in the time slot. Among them, the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the 8 symbols between the AGC symbol and the GAP symbol are used to transmit the lateral positioning reference signal.

[0230] Case 5-2: If the number of symbols used for the lateral link within a time slot is greater than the second threshold N1 = 10 and less than or equal to the third threshold N2 = 13, and the symbol set corresponding to a lateral positioning reference signal resource includes AGC symbols and GAP symbols, then the time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group in the time domain, and the two lateral positioning reference signal resource groups are time-division multiplexed.

[0231] Optionally, each lateral positioning reference signal resource group may include multiple frequency division multiplexed lateral positioning reference signal resources for allocation to different terminals.

[0232] For example, Figure 10e , Figure 10f and Figure 10g The diagrams above illustrate the lateral positioning reference signal resource group under several different values ​​of the number of symbols in the time slot in case 5-2. Figure 10e , Figure 10f and Figure 10g The lateral positioning reference signal is referred to as "SL-PRS".

[0233] like Figure 10e As shown, when the number of symbols used for the lateral link within a time slot is equal to 11, since the number of symbols is greater than the second threshold N1 = 10 and less than the third threshold N2 = 13, this time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. In the first allocation method, the first symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals. In the second allocation method, the first symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 6 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals. Using the first allocation method described above ensures that the coverage of the two sets of lateral positioning reference signal resources is as similar as possible.

[0234] like Figure 10f As shown, when the number of symbols used for the lateral link within a time slot is equal to 12, since the number of symbols is greater than the second threshold N1 = 10 and less than the third threshold N2 = 13, this time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. The first and second symbol sets each include 6 symbols. The first symbol in the first symbol set is the AGC symbol, the last symbol is the GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals. The first symbol in the second symbol set is the AGC symbol, the last symbol is the GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals.

[0235] like Figure 10gAs shown, when the number of symbols used for the lateral link within a time slot is equal to 13, since the number of symbols equals the third threshold N2 = 13, this time slot includes a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group corresponds to the first symbol set, and the second lateral positioning reference signal resource group corresponds to the second symbol set. In the first allocation method, the first symbol set includes 7 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals. In the second allocation method, the first symbol set includes 6 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 4 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 7 symbols, where the first symbol is an AGC symbol, the last symbol is a GAP symbol, and the middle 5 symbols are used to transmit lateral positioning reference signals. By adopting the first allocation method described above, it can be ensured that the coverage of the two sets of lateral positioning reference signal resources is as similar as possible.

[0236] Case 5-3: When the number of symbols used for the side link in a time slot is greater than the third threshold N2 = 13, and the symbol set corresponding to a side positioning reference signal resource includes AGC symbols and GAP symbols, the time slot includes a first side positioning reference signal resource group, a second side positioning reference signal resource group, and a third side positioning reference signal resource group in the time domain, and these three side positioning reference signal resource groups are time-division multiplexed.

[0237] Optionally, each lateral positioning reference signal resource group may include multiple frequency division multiplexed lateral positioning reference signal resources for allocation to different terminals.

[0238] For example, Figure 10h The diagram illustrates the lateral positioning reference signal resource group under several different values ​​of the number of symbols used for the lateral link within the time slot in case 4-3 above. Figure 10h The lateral positioning reference signal is referred to as "SL-PRS".

[0239] like Figure 10h As shown, when the number of symbols used for the side link in a time slot is equal to 14, since the number of symbols is greater than the third threshold N2 = 13, the time slot includes a first side link positioning reference signal resource group, a second side link positioning reference signal resource group, and a third side link positioning reference signal resource group. The first side link positioning reference signal resource group corresponds to the first symbol set, the second side link positioning reference signal resource group corresponds to the second symbol set, and the third side link positioning reference signal resource group corresponds to the third symbol set.

[0240] In the first allocation method, the first symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals.

[0241] In the second allocation method, the first symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals.

[0242] In the third allocation method, the first symbol set includes 4 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 2 symbols are used to transmit lateral positioning reference signals; the second symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals; the third symbol set includes 5 symbols, where the first symbol is the AGC symbol, the last symbol is the GAP symbol, and the middle 3 symbols are used to transmit lateral positioning reference signals.

[0243] By adopting the first allocation method described above, it can be ensured that the coverage of the three sets of lateral positioning reference signal resources is as similar as possible.

[0244] There are two resource allocation modes in sidelink communication: one is the network-controlled mode, where sidelink communication resources are scheduled by network devices (such as base stations); the other is the distributed mode, where terminals spontaneously select sidelink communication resources from a pre-configured sidelink resource pool. In the distributed resource allocation mode, when a transmitting UE (Tx UE) needs to send data to a receiving UE (Rx UE), it needs to select time-frequency resources for transmission from the resource pool through resource sensing, in order to avoid different Tx UEs selecting the same time-frequency resources as much as possible. Figure 11 An exemplary method for allocating positioning reference signal resources in a network control mode is shown.Figure 12 An exemplary method for allocating positioning reference signal resources in a distributed manner is shown.

[0245] See Figure 11 This is a flowchart illustrating the lateral positioning reference signal resource allocation method provided in an embodiment of this application. This process can be executed by a network device (such as a base station). For example, Figure 4 The lateral positioning reference signal resources of the terminals used to send or receive lateral positioning reference signals in various scenarios can be allocated to them by the base station.

[0246] like Figure 11 As shown, the process may include the following steps:

[0247] S1101: A network device (such as a base station) receives a first request from a first terminal, the first request being used to request the allocation of reference signal resources for positioning on a side link.

[0248] The reference signal used for positioning may specifically be a lateral positioning reference signal, or a PRS, or an SL-PRS.

[0249] S1102: The network device (such as a base station) determines the first resource used by the first terminal based on the first request.

[0250] The first resource includes one resource in the first resource group (i.e., the first lateral positioning reference signal resource group). The first resource group is one of the M time-division multiplexed lateral positioning reference signal resource groups in the first time slot. The value of M is determined by the number of symbols used for the lateral link in the first time slot and a set threshold. M is a positive integer greater than or equal to 1.

[0251] Optionally, the symbol set occupied by each resource group in the M lateral positioning reference signal resource groups can be pre-defined.

[0252] It is understood that the first time slot can be a time slot in a 5G cellular system or a sidelink time slot. Optionally, a sidelink time slot may include a minimum of 7 and a maximum of 14 symbols.

[0253] In this step, the network device (such as a base station) can determine the sideline positioning reference signal resource group contained in the first time slot based on the relationship between the set threshold and the number of symbols used for sideline links in the first time slot, and then determine the first resource used by the first terminal.

[0254] For example, if a network device (such as a base station) determines, based on the relationship between a set threshold and the number of symbols used for the sidelink in the first time slot, that the first time slot includes only one sidelink positioning reference signal resource group, then the sidelink positioning reference signal resources in that sidelink positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols from the symbol set corresponding to the sidelink positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0255] For another example, if a network device (such as a base station) determines, based on the relationship between a set threshold and the number of symbols used for the sidelink in the first time slot, that the sidelink time slot includes two sidelink positioning reference signal resource groups, specifically a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group, then there are two possibilities:

[0256] 1) The lateral positioning reference signal resources in the first lateral positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the first symbol set corresponding to the first lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0257] 2) The lateral positioning reference signal resources in the second lateral positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the second symbol set corresponding to the second lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0258] For another example, if a network device (such as a base station) determines, based on the relationship between a set threshold and the number of symbols used for the sidelink in the first time slot, that the sidelink time slot includes three sidelink positioning reference signal resource groups, specifically including a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, and a third sidelink positioning reference signal resource group, then there are three possibilities:

[0259] 1) The lateral positioning reference signal resources in the first lateral positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the first symbol set corresponding to the first lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0260] 2) The lateral positioning reference signal resources in the second lateral positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the second symbol set corresponding to the second lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0261] 3) Allocate the lateral positioning reference signal resources in the third lateral positioning reference signal resource group as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the third symbol set corresponding to the third lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0262] For another example, if a network device (such as a base station) determines, based on the relationship between at least one threshold and the number of symbols used for the sidelink in the first time slot, that the sidelink time slot includes four sidelink positioning reference signal resource groups, specifically including a first sidelink positioning reference signal resource group, a second sidelink positioning reference signal resource group, a third sidelink positioning reference signal resource group, and a fourth sidelink positioning reference signal resource group, then there are four possibilities:

[0263] 1) The lateral positioning reference signal resources in the first lateral positioning reference signal resource group are allocated as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are the symbols in the first symbol set occupied by the first lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0264] 2) Allocate the lateral positioning reference signal resources in the second lateral positioning reference signal resource group as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are symbols in the second symbol set occupied by the second lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0265] 3) Allocate the lateral positioning reference signal resources in the third lateral positioning reference signal resource group as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are the symbols in the third symbol set occupied by the third lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0266] 4) Allocate the lateral positioning reference signal resources in the fourth lateral positioning reference signal resource group as the first resource to the first terminal. Optionally, the symbols occupied by the first resource are the symbols in the fourth symbol set occupied by the fourth lateral positioning reference signal resource group. This application embodiment does not limit the frequency domain resources occupied by the first resource.

[0267] In this process, the method by which the network device (such as a base station) determines the number of side-link positioning reference signal resource groups (or the number of side-link positioning reference signal resource groups) in the first time slot based on a set threshold and the number of symbols used for side-links in the first time slot is described in the foregoing embodiments and will not be repeated here.

[0268] S1103: A network device (such as a base station) sends a first indication information to a first terminal, the first indication information being used to indicate a first resource.

[0269] In this step, the network device (such as a base station) can send indication information of the resources of the reference signal (such as a lateral positioning reference signal) allocated for positioning to the first terminal to the first terminal.

[0270] S1104: After receiving the first instruction information, the first terminal can send or receive a reference signal (such as a lateral positioning reference signal) for positioning on the first resource.

[0271] In one possible implementation, during the above process, the network device (e.g., a base station) may also receive a second request from the second terminal, which requests the allocation of lateral link positioning reference signal resources. The network device (e.g., the base station) can determine the second resource used by the second terminal based on the second request. The second resource is a resource in a second lateral link positioning reference signal resource group, which is one of M time-division multiplexed lateral link positioning reference signal resource groups within the first time slot. Furthermore, the second lateral link positioning reference signal resource group is different from the first lateral link positioning reference signal resource group, thereby achieving time-division multiplexing of lateral link positioning reference signal resources for both the first and second terminals to improve user capacity.

[0272] For example, a network device (such as a base station) determines that the sidelink time slot includes a first sidelink positioning reference signal resource group and a second sidelink positioning reference signal resource group. The first resource allocated by the network device (such as the base station) to the first terminal is a resource from the first sidelink positioning reference signal resource group, and the second resource allocated by the network device (such as the base station) to the second terminal is a resource from the second sidelink positioning reference signal resource group; or, the first resource allocated by the network device (such as the base station) to the first terminal is a resource from the second sidelink positioning reference signal resource group, and the second resource allocated by the network device (such as the base station) to the second terminal is a resource from the first sidelink positioning reference signal resource group. If the first time slot includes a larger number of sidelink positioning reference signal resource groups, sidelink positioning reference signal resources can be allocated to the terminal according to the above principles.

[0273] In another possible implementation, during the above process, the network device (such as a base station) may also receive a third request from a third terminal, which requests the allocation of sidelink positioning reference signal resources. The network device (such as the base station) can determine the third resource used by the third terminal based on the third request. This third resource is a resource within the first resource group (i.e., the first sidelink positioning reference signal resource group), and its frequency domain location differs from the first resource allocated to the first terminal. This enables frequency division multiplexing of the sidelink positioning reference signal resources for both the first and third terminals, thereby improving user capacity.

[0274] For example, a network device (such as a base station) determines that the side-link time slot includes a first side-link positioning reference signal resource group and a second side-link positioning reference signal resource group. The first resource allocated by the network device (such as the base station) to a first terminal is a resource in the first side-link positioning reference signal resource group, and the third resource allocated to a third terminal is also a resource in the first side-link positioning reference signal resource group. The first resource and the third resource have different time-frequency positions, such as being in different RE groups or different physical resource blocks (PRBs). This application embodiment does not limit this. Alternatively, the first resource allocated by the network device (such as the base station) to the first terminal is a resource in the second side-link positioning reference signal resource group, and the third resource allocated by the network device (such as the base station) to the third terminal is also a resource in the second side-link positioning reference signal resource group, but with different frequency domain positions. When the first time slot includes more side-link positioning reference signal resource groups, side-link positioning reference signal resources can be allocated to the terminal according to the above principles.

[0275] See Figure 12 This is a flowchart illustrating the lateral positioning reference signal resource allocation method provided in an embodiment of this application. This process can be executed by a terminal. For example, Figure 4 In each scenario, the resources for the terminal to send or receive side-line positioning reference signals can be selected by the terminal from pre-configured resources.

[0276] like Figure 12 As shown, the process may include the following steps:

[0277] S1201: The terminal determines M side-link positioning reference signal resource groups in the first time slot based on the number of symbols used for side-link in the first time slot and the set threshold, where M is a positive integer greater than or equal to 1.

[0278] The reference signal used for positioning may specifically be a positioning reference signal, a PRS, or an SL-PRS.

[0279] Optionally, the terminal can be a transmitting terminal (Tx UE). When the terminal needs to transmit sidelink positioning reference signals, it can execute this procedure to select the time-frequency resources for transmitting the sidelink positioning reference signals. For the receiving terminal (Rx UE), it can obtain the positioning reference signal resource configuration through signaling, such as PC5-RRC signaling or sidelink control information (SCI).

[0280] The terminal has a pre-configured resource pool for sidelink communication resources. In this embodiment, there are multiple resource pools, each corresponding to a possible value for the number of symbols used for sidelink communication within a time slot and a set threshold value. Depending on the number of symbols within the time slot and the set threshold value, a resource pool may include one, two, three, or more sidelink positioning reference signal resource groups. The relationship between the number of symbols used for sidelink communication within a time slot and the set threshold, and the relationship between the number of sidelink positioning reference signal resource groups (or the number of sidelink positioning reference signal resource groups) within that time slot, can be found in the aforementioned embodiments and will not be repeated here.

[0281] For example, the following resource pools can be pre-configured:

[0282] The resource pool corresponding to [first threshold N=9, number of symbols=7] includes, for example, the resource pool containing, Figure 5a This is a lateral positioning reference signal resource group;

[0283] The resource pool corresponding to [first threshold N = 9, number of symbols = 8] includes, for example, the resource pool containing, Figure 5b This is a lateral positioning reference signal resource group;

[0284] The resource pool corresponding to [first threshold N = 9, number of symbols = 9] includes, for example, the resource pool containing, Figure 5c This is a lateral positioning reference signal resource group;

[0285] The resource pool corresponding to [first threshold N = 9, number of symbols = 10] includes, for example, the resource pool containing, Figure 5d The two lateral positioning reference signal resource groups are shown.

[0286] The resource pool corresponding to [first threshold N = 9, number of symbols = 11] includes, for example, the resource pool containing, Figure 5g The first allocation method shown includes two lateral positioning reference signal resource groups;

[0287] The resource pool corresponding to [first threshold N=9, number of symbols=12] includes, for example, the resource pool... Figure 5eThe two lateral positioning reference signal resource groups are shown.

[0288] The resource pool corresponding to [first threshold N = 9, number of symbols = 13] includes, for example, the resource pool containing, Figure 5h The first allocation method shown includes two lateral positioning reference signal resource groups;

[0289] The resource pool corresponding to [first threshold N = 9, number of symbols = 14] includes, for example, the resource pool... Figure 5f The two lateral positioning reference signal resource groups are shown.

[0290] Of course, corresponding resource pools can also be pre-set based on other values ​​of the first threshold. Furthermore, corresponding resource pools can also be pre-set based on the second and third thresholds.

[0291] S1202: The terminal selects the first resource in one of the M lateral positioning reference signal resource groups.

[0292] In this step, the terminal can select one of the sideline positioning reference signal resource groups in the resource pool corresponding to the set threshold and the number of symbols used for sideline links in the time slot, and select the resources in the sideline positioning reference signal resource group as the first resource for transmitting sideline positioning reference signals.

[0293] Optionally, the terminal may randomly select a resource group from the lateral positioning reference signal resource groups included in the resource pool to minimize conflicts with resources selected by other terminals.

[0294] Optionally, the terminal may randomly select one sideline positioning reference signal resource from multiple frequency division multiplexed sideline positioning reference signal resources included in a sideline positioning reference signal resource group, in order to minimize conflicts with resources selected by other terminals.

[0295] S1203: The terminal receives or sends a reference signal for positioning (i.e., a lateral positioning reference signal) on the first resource.

[0296] Optionally, the terminal is a transmitting terminal, which may also send indication information to the receiving terminal to indicate the first resource, so that the receiving terminal receives the lateral positioning reference signal sent by the transmitting terminal on the first resource.

[0297] In the above embodiments of this application, a resource allocation method for sidelink positioning reference signals is proposed to address the problem of resource allocation for multiple users within a single time slot in sidelink communication scenarios, as well as the difficulty in achieving multi-user multiplexing due to sidelink resource scheduling being based on time slots. This method effectively solves the problems faced by sidelink positioning. Specifically, in the embodiments of this application, the resource allocation method for sidelink positioning reference signals can be determined based on the relationship between the number of symbols used for sidelink within a time slot and a set threshold. This effectively solves the resource allocation problem when multiple users transmit sidelink positioning reference signals within a single time slot, improves user multiplexing capacity by utilizing time-division multiplexing, and reduces the signaling overhead of higher layers for resource allocation of sidelink positioning reference signals.

[0298] Based on the same technical concept, this application provides a communication device. This communication device can implement the functions of the network device in the method flow provided in the above embodiments.

[0299] See Figure 13 The figure shows a schematic diagram of the communication device provided in an embodiment of this application. As shown, the communication device may include: a processing unit 1301, a receiving unit 1302, and a transmitting unit 1303.

[0300] The receiving unit 1302 is used to receive a first request from the first terminal, the first request being used to request the allocation of positioning reference signal resources on the side link.

[0301] Processing unit 1301 is configured to determine, based on the first request, a first resource used by the first terminal. The first resource is a resource within a first resource group (i.e., a first side-link positioning reference signal resource group). The first resource group is one of M time-division multiplexed side-link positioning reference signal resource groups within a first time slot. The value of M is determined by the number of symbols used for the side-link in the first time slot and a set threshold, where M is a positive integer greater than or equal to 1. The relationship between the number of symbols used for the side-link in the first time slot, the set threshold, and the value of M can be found in the aforementioned embodiments.

[0302] The sending unit 1303 is used to send first indication information to the first terminal, the first indication information being used to indicate the first resource.

[0303] Optionally, the set threshold is agreed upon by the system or configured by network signaling.

[0304] Optionally, the receiving unit 1302 is further configured to: receive a second request from the second terminal, the second request being used to request the allocation of lateral link positioning reference signal resources; the processing unit 1301 is further configured to: determine the second resource used by the second terminal according to the second request, the second resource including a resource in a second resource group (i.e., a second lateral link positioning reference signal resource group), the second resource group including one of the M time-division multiplexed lateral link positioning reference signal resource groups in the first time slot, and the second resource group being different from the first resource group.

[0305] Optionally, the receiving unit 1302 is further configured to: receive a third request from a third terminal, the third request being used to request the allocation of sidelink positioning reference signal resources; the processing unit 1301 is further configured to: determine a third resource used by the third terminal based on the third request, the third resource being a resource in the first resource group (i.e., the first sidelink positioning reference signal resource group), the third resource and the first resource having different frequency domain positions.

[0306] Based on the same technical concept, this application provides a communication device. This communication device can implement the functions of the terminal in the method flow provided in the above embodiments.

[0307] See Figure 14 The figure shows a schematic diagram of the communication device provided in an embodiment of this application. As shown, the communication device may include: a processing unit 1401, a receiving unit 1402, and a transmitting unit 1403.

[0308] In one possible implementation, the communication device can achieve Figure 11 The terminal functions accordingly. The receiving unit 1402 is used to receive first indication information from the network device. The first indication information indicates a first resource, which is a resource in a first resource group (i.e., a first side-link positioning reference signal resource group). The first resource group is one of M time-division multiplexed side-link positioning reference signal resource groups within a first time slot. The value of M is determined by the number of symbols used for the side-link in the first time slot and a set threshold, where M is a positive integer greater than or equal to 1. The transmitting unit 1403 is used to receive or transmit a side-link positioning reference signal on the first resource. The relationship between the number of symbols used for the side-link in the first time slot, the set threshold, and the value of M can be found in the aforementioned embodiments.

[0309] In one possible implementation, the communication device can achieve Figure 12The functions of the terminal are as follows: Accordingly, the processing unit 1401 is used to: determine M lateral positioning reference signal resource groups within the first time slot based on the number of symbols used for the lateral link within the first time slot and a set threshold, where M is a positive integer greater than or equal to 1; and select a first resource from one of the M lateral positioning reference signal resource groups; the transmitting unit 1403 is used to transmit a reference signal for positioning on the first resource, and the receiving unit 1402 is used to transmit a reference signal for positioning (i.e., a lateral positioning reference signal) on the first resource. The relationship between the number of symbols used for the lateral link within the first time slot, the set threshold, and the value of M can be found in the aforementioned embodiments.

[0310] For ease of understanding, Figure 15 This application only shows the structure required for the communication device 1500 to perform the method described herein; this application does not limit the communication device to having more components. The communication device 1500 can be used to perform the steps executed by the network device or terminal in the above method embodiments. The communication device 1500 may include a communication interface 1501, a memory 1502, and a processor 1503. The communication interface 1501 can be used for communication, such as for sending or receiving signals. The memory 1502 is coupled to the processor 1503 and can be used to store the programs and data necessary for the communication device 1500 to implement its various functions. The processor 1503 is configured to support the communication device 1500 in performing the processing functions executed by the network device or terminal in the above method. The memory 1502 and the processor 1503 can be integrated or independent of each other.

[0311] For example, the communication interface 1501 can be a communication port, such as a communication port (or interface) used for communication between network elements. The communication interface 1501 can also be referred to as a transceiver unit or a communication unit. The processor 1503 can be implemented using a processing chip or processing circuit. The communication interface 1501 can receive or transmit information wirelessly or via a wired connection.

[0312] Furthermore, depending on the actual needs of use, the communication device provided in this application embodiment may include a processor, which calls an external transceiver and / or memory to implement the above-mentioned functions, steps, or operations. The communication device may also include a memory, where the processor calls and executes a program stored in the memory to implement the above-mentioned functions, steps, or operations. Alternatively, the communication device may include a processor and a transceiver (or communication interface), where the processor calls and executes a program stored in an external memory to implement the above-mentioned functions, steps, or operations. Alternatively, the communication device may also include a processor, a memory, and a transceiver.

[0313] Based on the same concept as the above method embodiments, this application also provides a computer-readable storage medium storing program instructions (or computer programs, instructions) thereon. When the program instructions are executed by a processor, they cause the computer to perform the operations performed by a network device or terminal in any possible implementation of the above method embodiments or method embodiments.

[0314] Based on the same concept as the above method embodiments, this application also provides a computer program product, including program instructions. When the computer program product is invoked and executed by a computer, it can enable the computer to perform the operations performed by the network device or terminal in any possible implementation of the above method embodiments or method embodiments.

[0315] Based on the same concept as the above-described method embodiments, this application also provides a chip or chip system, which is coupled to a transceiver and used to implement the operations performed by a network device or terminal in any possible implementation of the above-described method embodiments. The chip system may include the chip, as well as components including a memory, a communication interface, etc.

[0316] Based on the same concept as the above method embodiments, this application also provides a communication system, which may include the network device and terminal in the embodiments of this application.

[0317] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0318] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure One One or more processes and / or boxes Figure One A device that provides the functions specified in one or more boxes.

[0319] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure One One or more processes and / or boxes Figure One The function specified in one or more boxes.

[0320] These computer program instructions can also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure One One or more processes and / or boxes Figure One The steps of the function specified in one or more boxes.

[0321] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of protection of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for allocating lateral positioning reference signal resources, characterized in that, The method includes: Receive a first request from a first terminal, the first request being used to request the allocation of lateral positioning reference signal resources; The first resource used by the first terminal is determined according to the first request. The first resource includes a resource in a first sidelink positioning reference signal resource group. The first sidelink positioning reference signal resource group is one of M time-division multiplexed sidelink positioning reference signal resource groups in the first time slot. The value of M is determined by the number of symbols used for sidelink links in the first time slot and at least one threshold. M is a positive integer greater than or equal to 1. Send a first indication message to the first terminal, the first indication message being used to indicate the first resource.

2. The method as described in claim 1, characterized in that, The at least one threshold includes a first threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the first threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for lateral links in the first time slot is greater than the first threshold, then the first time slot includes two lateral positioning reference signal resource groups.

3. The method as described in claim 1, characterized in that, The at least one threshold includes a second threshold and a third threshold, wherein the second threshold is less than the third threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the second threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the second threshold and less than or equal to the third threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the third threshold, then the first time slot includes three lateral positioning reference signal resource groups.

4. The method as described in claim 1, characterized in that, The at least one threshold includes a fourth threshold, a fifth threshold, and a sixth threshold, wherein the fourth threshold is less than the fifth threshold, and the fifth threshold is less than the sixth threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the fourth threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the fourth threshold and less than or equal to the fifth threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for the sidelink in the first time slot is greater than the fifth threshold and less than or equal to the sixth threshold, then the first time slot includes three sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the sixth threshold, then the first time slot includes four lateral positioning reference signal resource groups.

5. The method according to any one of claims 2-4, characterized in that, The two lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, and the second lateral positioning reference signal resource group occupies a second symbol set. The first symbol set and the second symbol set have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set; wherein, the time domain position of the first symbol set is before the time domain position of the second symbol set.

6. The method as described in claim 3 or 4, characterized in that, The three lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, and a third lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, and the third lateral positioning reference signal resource group occupies a third symbol set. The first symbol set, the second symbol set, and the third symbol set have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, and the first symbol set or the second symbol set has one more symbol than the third symbol set; or, the second symbol set and the third symbol set have the same number of symbols, and the first symbol set has two more symbols than the second symbol set and the third symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, and the time domain position of the second symbol set precedes the time domain position of the third symbol set.

7. The method as described in claim 4, characterized in that, The four lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, a third lateral positioning reference signal resource group, and a fourth lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, the third lateral positioning reference signal resource group occupies a third symbol set, and the fourth lateral positioning reference signal resource group occupies a fourth symbol set. The first symbol set, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set, and the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, the third symbol set and the fourth symbol set have the same number of symbols, and the first symbol set has one more symbol than the third symbol set; or, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols, and the first symbol set has two more symbols than the second symbol set, the third symbol set, and the fourth symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, the time domain position of the second symbol set precedes the time domain position of the third symbol set, and the time domain position of the third symbol set precedes the time domain position of the fourth symbol set.

8. The method according to any one of claims 1-4, characterized in that, The at least one threshold is agreed upon by the system or configured by network signaling.

9. The method according to any one of claims 1-4, characterized in that, The method further includes: Receive a second request from the second terminal, the second request being used to request the allocation of lateral positioning reference signal resources; The second resource used by the second terminal is determined according to the second request. The second resource includes a resource in a second lateral positioning reference signal resource group. The second lateral positioning reference signal resource group is one of the M time-division multiplexed lateral positioning reference signal resource groups in the first time slot, and the second lateral positioning reference signal resource group is different from the first lateral positioning reference signal resource group.

10. The method according to any one of claims 1-4, characterized in that, The method further includes: Receive a third request from a third terminal, the third request being used to request the allocation of lateral positioning reference signal resources; The third resource used by the third terminal is determined according to the third request. The third resource includes a resource in the first side-line positioning reference signal resource group. The frequency domain position of the third resource is different from that of the first resource.

11. The method according to any one of claims 1-4, characterized in that, Each of the M lateral positioning reference signal resource groups includes an automatic gain control (AGC) symbol and a gapped interval (GAP) symbol, or may not include an AGC symbol and a GAP symbol.

12. The method according to any one of claims 1-4, characterized in that, The symbols used for the side link in the first time slot include at least one of AGC symbols and GAP symbols, or do not include AGC symbols and GAP symbols.

13. A method for allocating lateral positioning reference signal resources, characterized in that, include: Receive first indication information from network device, the first indication information is used to indicate a first resource, the first resource includes a resource in a first sidelink positioning reference signal resource group, the first sidelink positioning reference signal resource group is one of M time-division multiplexed sidelink positioning reference signal resource groups in a first time slot, the value of M is determined by the number of symbols used for sidelink links in the first time slot and at least one threshold, M is a positive integer greater than or equal to 1; Receive or transmit a lateral positioning reference signal on the first resource.

14. The method as described in claim 13, characterized in that, The at least one threshold includes a first threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the first threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for lateral links in the first time slot is greater than the first threshold, then the first time slot includes two lateral positioning reference signal resource groups.

15. The method as described in claim 13, characterized in that, The at least one threshold includes a second threshold and a third threshold, wherein the second threshold is less than the third threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the second threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the second threshold and less than or equal to the third threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the third threshold, then the first time slot includes three lateral positioning reference signal resource groups.

16. The method as described in claim 13, characterized in that, The at least one threshold includes a fourth threshold, a fifth threshold, and a sixth threshold, wherein the fourth threshold is less than the fifth threshold, and the fifth threshold is less than the sixth threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the fourth threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the fourth threshold and less than or equal to the fifth threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for the sidelink in the first time slot is greater than the fifth threshold and less than or equal to the sixth threshold, then the first time slot includes three sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the sixth threshold, then the first time slot includes four lateral positioning reference signal resource groups.

17. The method according to any one of claims 14-16, characterized in that, The two lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, and the second lateral positioning reference signal resource group occupies a second symbol set. The first symbol set and the second symbol set have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set; wherein, the time domain position of the first symbol set is before the time domain position of the second symbol set.

18. The method according to any one of claims 15-16, characterized in that, The three lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, and a third lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, and the third lateral positioning reference signal resource group occupies a third symbol set. The first symbol set, the second symbol set, and the third symbol set have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, and the first symbol set or the second symbol set has one more symbol than the third symbol set; or, the second symbol set and the third symbol set have the same number of symbols, and the first symbol set has two more symbols than the second symbol set and the third symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, and the time domain position of the second symbol set precedes the time domain position of the third symbol set.

19. The method as described in claim 16, characterized in that, The four lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, a third lateral positioning reference signal resource group, and a fourth lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, the third lateral positioning reference signal resource group occupies a third symbol set, and the fourth lateral positioning reference signal resource group occupies a fourth symbol set. The first symbol set, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set, and the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, the third symbol set and the fourth symbol set have the same number of symbols, and the first symbol set has one more symbol than the third symbol set; or, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols, and the first symbol set has two more symbols than the second symbol set, the third symbol set, and the fourth symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, the time domain position of the second symbol set precedes the time domain position of the third symbol set, and the time domain position of the third symbol set precedes the time domain position of the fourth symbol set.

20. The method according to any one of claims 13-16, characterized in that, The at least one threshold is agreed upon by the system or configured by network signaling.

21. The method according to any one of claims 13-16, characterized in that, Each of the M lateral positioning reference signal resource groups includes, or excludes, automatic gain control (AGC) symbols and interval gap (GAP) symbols.

22. The method according to any one of claims 13-16, characterized in that, The symbols used for the side link in the first time slot include at least one of AGC symbols and GAP symbols, or do not include AGC symbols and GAP symbols.

23. A method for allocating lateral positioning reference signal resources, characterized in that, include: Based on the number of symbols used for the side link in the first time slot and at least one threshold, M side positioning reference signal resource groups are determined in the first time slot, where M is a positive integer greater than or equal to 1; Select the first resource in one of the M lateral positioning reference signal resource groups; Receive or transmit a lateral positioning reference signal on the first resource.

24. The method as described in claim 23, characterized in that, The at least one threshold includes a first threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the first threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for lateral links in the first time slot is greater than the first threshold, then the first time slot includes two lateral positioning reference signal resource groups.

25. The method as described in claim 23, characterized in that, The at least one threshold includes a second threshold and a third threshold, wherein the second threshold is less than the third threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the second threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the second threshold and less than or equal to the third threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the third threshold, then the first time slot includes three lateral positioning reference signal resource groups.

26. The method as described in claim 23, characterized in that, The at least one threshold includes a fourth threshold, a fifth threshold, and a sixth threshold, wherein the fourth threshold is less than the fifth threshold, and the fifth threshold is less than the sixth threshold; If the number of symbols used for the side link in the first time slot is less than or equal to the fourth threshold, then the first time slot includes a side positioning reference signal resource group. If the number of symbols used for the sidelink in the first time slot is greater than the fourth threshold and less than or equal to the fifth threshold, then the first time slot includes two sidelink positioning reference signal resource groups. If the number of symbols used for the sidelink in the first time slot is greater than the fifth threshold and less than or equal to the sixth threshold, then the first time slot includes three sidelink positioning reference signal resource groups. If the number of symbols used for lateral links in the first time slot is greater than the sixth threshold, then the first time slot includes four lateral positioning reference signal resource groups.

27. The method according to any one of claims 24-26, characterized in that, The two lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group and a second lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, and the second lateral positioning reference signal resource group occupies a second symbol set. The first symbol set and the second symbol set have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set; wherein, the time domain position of the first symbol set is before the time domain position of the second symbol set.

28. The method according to any one of claims 25-26, characterized in that, The three lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, and a third lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, and the third lateral positioning reference signal resource group occupies a third symbol set. The first symbol set, the second symbol set, and the third symbol set have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, and the first symbol set or the second symbol set has one more symbol than the third symbol set; or, the second symbol set and the third symbol set have the same number of symbols, and the first symbol set has two more symbols than the second symbol set and the third symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, and the time domain position of the second symbol set precedes the time domain position of the third symbol set.

29. The method as described in claim 26, characterized in that, The four lateral positioning reference signal resource groups include a first lateral positioning reference signal resource group, a second lateral positioning reference signal resource group, a third lateral positioning reference signal resource group, and a fourth lateral positioning reference signal resource group. The first lateral positioning reference signal resource group occupies a first symbol set, the second lateral positioning reference signal resource group occupies a second symbol set, the third lateral positioning reference signal resource group occupies a third symbol set, and the fourth lateral positioning reference signal resource group occupies a fourth symbol set. The first symbol set, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set has one more symbol than the second symbol set, and the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols; or, the first symbol set and the second symbol set have the same number of symbols, the third symbol set and the fourth symbol set have the same number of symbols, and the first symbol set has one more symbol than the third symbol set; or, the second symbol set, the third symbol set, and the fourth symbol set all have the same number of symbols, and the first symbol set has two more symbols than the second symbol set, the third symbol set, and the fourth symbol set; wherein, the time domain position of the first symbol set precedes the time domain position of the second symbol set, the time domain position of the second symbol set precedes the time domain position of the third symbol set, and the time domain position of the third symbol set precedes the time domain position of the fourth symbol set.

30. The method according to any one of claims 23-26, characterized in that, The at least one threshold is agreed upon by the system or configured by network signaling.

31. The method according to any one of claims 23-26, characterized in that, Each of the M lateral positioning reference signal resource groups includes an automatic gain control (AGC) symbol and a gapped interval (GAP) symbol, or may not include an AGC symbol and a GAP symbol.

32. The method according to any one of claims 23-26, characterized in that, The symbols used for the side link in the first time slot include at least one of AGC symbols and GAP symbols, or do not include AGC symbols and GAP symbols.

33. A communication system, characterized in that, include: Network device and terminal; the network device is configured to perform the method as described in any one of claims 1-12; The terminal is used to perform the method as described in any one of claims 13-22, or to perform the method as described in any one of claims 23-32.

34. A communication device, characterized in that, include: Processor, memory, and computer programs; The computer program is stored in the memory, and when the computer program is executed by the processor, it causes the communication device to perform the method as described in any one of claims 1-12.

35. A communication device, characterized in that, include: Processor, memory, and computer programs; The computer program is stored in the memory, and when the computer program is executed by the processor, it causes the communication device to perform the method as described in any one of claims 13-22, or to perform the method as described in any one of claims 23-32.

36. A computer-readable storage medium, characterized in that, The method includes a computer program that, when run on an electronic device, causes the electronic device to perform the method as described in any one of claims 1-12, or the method as described in any one of claims 13-22, or the method as described in any one of claims 23-32.

37. A computer program product, characterized in that, When it is operated on an electronic device, it causes the electronic device to perform the method as described in any one of claims 1-12, or the method as described in any one of claims 13-22, or the method as described in any one of claims 23-32.

38. A chip system, characterized in that, include: Memory, used to store computer programs; processor; When the processor retrieves and runs the computer program from memory, it causes the electronic device equipped with the chip system to perform the method as described in any one of claims 1-12, or the method as described in any one of claims 13-22, or the method as described in any one of claims 23-32.

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