Resource selection method, device and terminal equipment

Abstract

The present invention provides a resource selection method, apparatus, and terminal device, belonging to the field of communications technology. The method includes a first terminal sending direct link coordination information to a second terminal; wherein the direct link coordination information includes at least one of the following: a first set of inapplicable resources; a set of applicable resources; and scheduled resources. The resource selection method of an embodiment of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link.

Description

Technical Field

[0001] The present invention belongs to the field of communication technology, and in particular relates to a resource selection method, device and terminal equipment. Background Art

[0002] Inter-UE coordination is a key technology for enhancing resource allocation on direct links. It can effectively avoid issues such as half-duplex and hidden nodes, thereby improving packet reception ratio (PRR) performance.

[0003] Currently, inter-UE coordination is triggered in two ways: Request signaling triggering: The coordinated terminal UE-B first sends a coordination request signaling to the coordinating terminal UE-A. Upon receiving the request signaling, the coordinating terminal UE-A sends coordination information to the coordinated terminal UE-B; and Event triggering: For example, the coordinating terminal UE-A periodically sends coordination information to the coordinated terminal UE-B. However, the specific process for generating coordination information and selecting resources based on this information is currently unclear. This makes it impossible for the transmitting terminal to avoid sending resources that are unsuitable for the receiving terminal, resulting in low terminal decoding success rates. Summary of the Invention

[0004] The embodiments of the present invention provide a resource selection method, apparatus and terminal device, which solve the problem in the prior art that the prompts for traffic sign information and traffic event information are issued too early or too late, which may cause traffic safety accidents.

[0005] In a first aspect, an embodiment of the present invention provides a resource selection method, comprising:

[0006] Sending direct link coordination information to the second terminal;

[0007] The direct link coordination information includes at least one of the following:

[0008] First, resource collection is not applicable;

[0009] Applicable resource collection;

[0010] Scheduling resources.

[0011] Furthermore, the direct link coordination information is generated when at least one of the following conditions is met:

[0012] receiving a direct link coordination request signaling sent by the second terminal;

[0013] The direct link control information SCI including the coordination request identifier sent by the second terminal is received.

[0014] Furthermore, the first inapplicable resource set includes at least one of the following:

[0015] All resources in the time domain where the sending resources of the first terminal are located;

[0016] High interference resources perceived by the first terminal;

[0017] The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

[0018] Furthermore, the high interference resource is: a resource whose reference signal received power RSRP value among the resources sensed by the first terminal exceeds a first reference signal received power RSRP threshold value.

[0019] Furthermore, the priority of the service carried on the sending resources of the third terminal is higher than the service priority of the second terminal.

[0020] Furthermore, the conditions include:

[0021] A direct link coordination request signaling including a second unsuitable resource set is received from a second terminal.

[0022] Furthermore, the second set of inapplicable resources includes at least one of the following:

[0023] all resources in the time domain where the sending resources of the second terminal are located;

[0024] high interference resources perceived by the second terminal;

[0025] The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

[0026] Furthermore, the method comprises:

[0027] Resources are excluded according to the second unsuitable resource set to obtain an applicable resource set and / or scheduling resources.

[0028] Furthermore, the step of excluding resources according to the second unsuitable resource set to obtain an applicable resource set and / or scheduled resources includes:

[0029] Determine a first initialization candidate resource set for the first terminal as all resources within the resource indication window;

[0030] The second unsuitable resource set is excluded from the first initialization candidate resource set to obtain a first candidate resource set.

[0031] Furthermore, the step of excluding resources according to the second unsuitable resource set to obtain an applicable resource set and / or scheduled resources includes:

[0032] Eliminate resources according to the second unsuitable resource set to obtain the suitable resource set;

[0033] Resource selection is performed on the applicable resource set to obtain the scheduling resource.

[0034] In a second aspect, an embodiment of the present invention provides a resource selection method, comprising:

[0035] receiving direct link coordination information sent by the first terminal;

[0036] Determining resources to be sent according to the direct link coordination information;

[0037] The direct link coordination information includes at least one of the following:

[0038] First, resource collection is not applicable;

[0039] Applicable resource collection;

[0040] Scheduling resources.

[0041] Furthermore, the first set of unsuitable resources includes at least one of the following:

[0042] All resources in the time domain where the sending resources of the first terminal are located;

[0043] High interference resources perceived by the first terminal;

[0044] The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

[0045] Furthermore, the method comprises:

[0046] excluding the first inapplicable resource set from the resource set of the second terminal;

[0047] Select the resource to be sent.

[0048] Furthermore, excluding the first inapplicable resource set from the resource set of the second terminal includes:

[0049] Determine a second initialization candidate resource set for the second terminal as all resources within the resource selection window;

[0050] The first unsuitable resource set is excluded from the second initialization candidate resource set to obtain a second candidate resource set.

[0051] Furthermore, the method comprises:

[0052] After excluding resources based on unmonitored slot processing and / or RSRP power criteria, when comparing the number of remaining resources, the total number of resources is set to the number of resources of the second candidate resource set.

[0053] Furthermore, the method comprises:

[0054] When the sending resources of the second terminal overlap with the first unsuitable resource set, resource reselection is performed on the sending resources.

[0055] In a third aspect, an embodiment of the present invention provides a terminal device, comprising: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the resource selection method described above are implemented.

[0056] In a fourth aspect, an embodiment of the present invention provides a resource selection device, comprising:

[0057] A sending module, configured to send direct link coordination information to the second terminal;

[0058] The direct link coordination information includes at least one of the following:

[0059] First, resource collection is not applicable;

[0060] Applicable resource collection;

[0061] Scheduling resources.

[0062] In a fifth aspect, an embodiment of the present invention provides a resource selection device, comprising:

[0063] A receiving module, configured to receive direct link coordination information sent by the first terminal;

[0064] A determination module, configured to determine resources to be sent according to the direct link coordination information;

[0065] The direct link coordination information includes at least one of the following:

[0066] First, resource collection is not applicable;

[0067] Applicable resource collection;

[0068] Scheduling resources.

[0069] In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the resource selection method described above when executed by a processor.

[0070] The beneficial effects of the above technical solution of the present invention are:

[0071] The resource selection method of an embodiment of the present invention transmits direct link coordination information from a first terminal to a second terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 A schematic diagram illustrating the timing of NR-V2X mode 2 resource selection according to an embodiment of the present invention;

[0073] Figure 2 A schematic diagram showing a flow chart of a resource selection method according to an embodiment of the present invention;

[0074] Figure 3 A second flowchart illustrating a resource selection method according to an embodiment of the present invention;

[0075] Figure 4 A schematic diagram showing a resource selection method according to an embodiment of the present invention;

[0076] Figure 5 A structural block diagram showing a resource selection device according to an embodiment of the present invention;

[0077] Figure 6 A structural block diagram showing a resource selection device according to an embodiment of the present invention;

[0078] Figure 7 One of the structural block diagrams of a terminal device according to an embodiment of the present invention is shown;

[0079] Figure 8 The second structural block diagram of the terminal device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0080] To make the technical problems, technical solutions, and advantages to be solved by the present invention more apparent, a detailed description will be given below with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided solely to facilitate a comprehensive understanding of the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, for the sake of clarity and brevity, descriptions of known functions and configurations have been omitted.

[0081] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0082] In various embodiments of the present invention, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0083] Additionally, the terms "system" and "network" are often used interchangeably herein.

[0084] When describing the embodiments of the present invention, some concepts used in the following description are first explained.

[0085] Rel-16 NR-V2X Mode 2 Resource Allocation Mechanism

[0086] NR-V2X uses resource exclusion technology based on sensing and reference signal receiving power (RSRP). Figure 1 As shown in Figure 1, in the Sensing window, the UE continues to receive, decode, and measure RSRP. When the service packet arrives at time n, the UE resource selection process is as follows:

[0087] (1) Based on the self-perception results, resources reserved within the resource selection window and with a received RSRP greater than the RSRP threshold are excluded from the resource selection window. The RSRP threshold is determined based on the priority of the received service packet and the priority of the service packet to be sent;

[0088] (2) After resource exclusion, determine the proportion of available resources. If the proportion of available resources is less than X% of the total resources in the resource selection window, increase the RSRP threshold by 3dB and repeat the resource exclusion process in (1) until the proportion of available resources is greater than or equal to X%.

[0089] (3) The terminal UE randomly selects the resources required for transmission from the available resources.

[0090] On this basis, to address resource collisions caused by non-periodic bursts and to ensure the reliability of high-priority services, a re-evaluation mechanism and a pre-emption mechanism were added. The re-evaluation mechanism primarily targets unreserved resources. Before sending a resource, it determines whether a collision has occurred with the selected resource based on the latest transaction results. If a collision has occurred, reselection can be performed, thereby reducing the probability of resource collisions. The pre-emption mechanism primarily targets reserved resources. If a reserved resource is preempted by a high-priority UE, it triggers a low-priority UE to reselect the resource, thereby avoiding collisions between high- and low-priority UEs and ensuring the performance of high-priority services.

[0091] Inter-UE coordination mechanism: triggering coordination information signaling based on request

[0092] The existing coordination request signaling contains information such as sub-channel information, RSRP threshold value, and service packet priority information. After receiving the request signaling, the coordinating UE can "screen" the coordination information (resource set, which may be a "white list" or "black list") based on the above information. For example, sub-channel information can be used for: UE-B (the coordinated UE) needs to occupy two consecutive sub-channels for transmission resources, and UE-BA (the coordinating UE) perceives that only one sub-channel is available in a certain time slot. In order to reduce the overhead of coordination information, the separately available sub-channel does not need to be included in the coordination information, thereby reducing the overhead of coordination information; RSRP threshold value information can be used for: UE-A can use the RSRP threshold value to exclude resources during the process of determining coordination information by resource exclusion.

[0093] Inter-UE coordination mechanism 1: triggering coordination information signaling based on pre-set conditions

[0094] After certain preset conditions other than request signaling are met (such as periodic service transmission), the coordinating UE can send coordination information (resource set, which may be a "white list" or a "black list") according to its own perception results.

[0095] Inter-UE coordination mechanism 2: triggering resource reselection based on coordination information

[0096] In the existing inter-UE coordination mechanism design, UE-B's request signaling can include its selected time-frequency resources. After decoding the request signaling, UE-A determines whether the resources selected by UE-B are suitable based on its own perception, i.e., from UE-A's perspective. If not, it can provide feedback indicating whether the resources selected by UE-B are suitable. If UE-B receives feedback indicating that the resources are not suitable, it can trigger resource reselection.

[0097] First embodiment

[0098] like Figure 2 As shown, an embodiment of the present invention provides a resource selection method, comprising:

[0099] Step 201: Send direct link coordination information to the second terminal;

[0100] The direct link coordination information includes at least one of the following:

[0101] First, resource collection is not applicable;

[0102] Applicable resource collection;

[0103] Scheduling resources.

[0104] The resource selection method of an embodiment of the present invention transmits direct link coordination information from a first terminal to a second terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link.

[0105] Optionally, the direct link coordination information is generated when at least one of the following conditions is met:

[0106] receiving a direct link coordination request signaling sent by the second terminal;

[0107] The direct link control information SCI including the coordination request identifier sent by the second terminal is received.

[0108] In one embodiment of the present invention, the direct link coordination request signaling includes at least one of the following:

[0109] The type of coordination information requested;

[0110] Second, it does not apply to resource collections;

[0111] The resource selection window position of the second terminal;

[0112] A service resource set of the second terminal.

[0113] The real-time resource selection method of the present invention generates direct link coordination information by a first terminal based on a trigger condition of receiving direct link coordination request signaling sent by a second terminal or direct link control information SCI including a coordination request identifier. The direct link coordination information can be generated based on the resource perception information of the first terminal itself and / or the information sent by the second terminal. This can effectively prevent the second terminal from sending on resources that are not suitable for the first terminal to receive, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0114] Optionally, the first inapplicable resource set includes at least one of the following:

[0115] All resources in the time domain where the sending resources of the first terminal are located;

[0116] High interference resources perceived by the first terminal;

[0117] The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

[0118] It should be noted that the sending resources of the first terminal include reserved resources; the target receiving address perceived by the first terminal is the third terminal of the first terminal, which can be understood as the terminal corresponding to the terminal ID in the information perceived by the first terminal through decoding the second-stage direct link control information (2nd-stage SCI); the sending resources of the third terminal are the sending resources on the direct link between the third terminal and the first terminal.

[0119] For example, the second terminal sends a coordination request signaling to the first terminal, wherein the coordination request information includes the half-duplex resources of the first terminal and the resource selection window position of the second terminal; the resource selection window position of the second terminal is used as the resource indication window, and the first terminal writes its sending resources (sending time slot set) within the resource indication window into the coordination information and sends it to the second terminal according to the resource indication window in the coordination request signaling.

[0120] In one embodiment of the present invention, all resources in the time domain where the sending resources of the first terminal are located and the high-interference resources perceived by the first terminal are resources that the first terminal cannot receive; at the same time, the first terminal can receive data sent by multiple terminals, and the sending resources of the third terminal are also resources that the first terminal cannot receive data sent by the second terminal.

[0121] The resource selection method of the embodiment of the present invention treats the resources on the first terminal that cannot be received by the second terminal as the first unsuitable resources, so that the second terminal can exclude the unsuitable resources, and can effectively avoid the second terminal from sending on the resources that are not suitable for the first terminal to receive, thereby improving the decoding success rate of the receiving terminal and improving the overall performance of the direct link.

[0122] Optionally, the high-interference resource is: a resource whose reference signal received power RSRP value among the resources sensed by the first terminal exceeds a first reference signal received power RSRP threshold value.

[0123] In one embodiment of the present invention, the first terminal, based on its own perception results, divides the reserved resources into subchannels or subchannel sets as granularity, compares the RSRP values ​​of these subchannels or subchannel sets with the first RSRP threshold value, and identifies the subchannels / subchannel sets whose RSRP values ​​are higher than this threshold to generate a high-interference resource set.

[0124] It should be noted that the first RSRP threshold value is a pre-configured or network-side configured RSRP value or an RSRP value carried in the coordination request signaling.

[0125] For example, the second terminal initially transmits data, and the SCI transmitted by the second terminal contains a coordination request identifier, and the first terminal is triggered to coordinate; the first RSRP threshold value is used as the exclusion threshold, and the RSRP values ​​of all resources perceived by itself exceed the first RSRP threshold value, and the sub-channels of the resources reserved for future transmission are identified as a high-interference resource set; wherein, the high-interference resource set includes high-interference time-frequency resources; the time-frequency position index of the high-interference resource is written into the coordination information and sent to the second terminal.

[0126] The resource selection method of the embodiment of the present invention, by using resources whose RSRP values ​​among the resources of the first terminal are higher than the first RSRP threshold value as the first unsuitable resource set, can enable the second terminal to exclude unsuitable resources, effectively avoiding the second terminal from sending on resources that are not suitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and improving the overall performance of the direct link.

[0127] Optionally, the priority of the service carried on the sending resources of the third terminal is higher than the service priority of the second terminal.

[0128] In one embodiment of the present invention, the third terminal is a terminal whose priority of carrying services on sending resources is higher than the service priority of the second terminal. If the priority of carrying services on sending resources is lower than that of the second terminal, the resources occupied by it on the first terminal do not belong to the first inapplicable resources.

[0129] The first terminal determines that it needs to receive resources from a third terminal other than the second terminal by decoding the destination ID in the second-stage direct link control information (2nd-stage SCI) in its own perception information, and that the priority of the service carried on the sending resources of the third terminal is higher than the service priority of the second terminal. The sending resources of the third terminal are used to generate a resource set for receiving other UEs with sub-channels or sub-channel sets as the granularity.

[0130] For example, the second terminal initially transmits data to the first terminal, and the first terminal is triggered to coordinate; the service priority of the second terminal is learned by decoding the SCI of the second terminal; the first terminal uses its own resource selection window as the resource indication window, decodes the perceived second-stage direct link control information (2nd-stage SCI), and finds all resources with the destination ID of the first terminal as receiving resources; within the resource indication window, all sub-channels with a higher service priority than the receiving resources of the second terminal are identified as receiving the set of other UE resources, and the receiving set of other UE resources is written into the coordination information and sent to the second terminal

[0131] The resource selection method of an embodiment of the present invention, by determining that a third terminal has a higher service priority for sending resources received by the first terminal than the second terminal, can enable the second terminal to exclude unsuitable resources, effectively avoiding the second terminal from sending on resources that are not suitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and improving the overall performance of the direct link.

[0132] Optionally, the conditions include:

[0133] A direct link coordination request signaling including a second unsuitable resource set is received from a second terminal.

[0134] The resource selection method of the embodiment of the present invention, by determining the second unsuitable resource set, can enable the first terminal to exclude unsuitable resources, effectively avoiding the second terminal from sending on resources that are not suitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link.

[0135] Optionally, the second inapplicable resource set includes at least one of the following:

[0136] all resources in the time domain where the sending resources of the second terminal are located;

[0137] high interference resources perceived by the second terminal;

[0138] The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

[0139] It should be noted that the sending resources of the second terminal include reserved resources; the target receiving address perceived by the second terminal is the fourth terminal of the second terminal, which can be understood as the terminal corresponding to the terminal ID in the information perceived by the second terminal by decoding the second-stage direct link control information (2nd-stage SCI); the sending resources of the fourth terminal are the sending resources on the direct link between the fourth terminal and the second terminal.

[0140] In one embodiment of the present invention, all resources in the time domain where the sending resources of the second terminal are located and the high-interference resources perceived by the second terminal are resources that the second terminal cannot receive and send to the first terminal; at the same time, the second terminal can receive data sent by multiple terminals, and the sending resources of the fourth terminal are also resources that the second terminal cannot receive data sent by the first terminal.

[0141] The resource selection method of this embodiment of the present invention treats resources that a second terminal cannot receive from a first terminal as second unsuitable resources. This allows the first terminal to exclude unsuitable resources, thereby including only a set of applicable resources when sending coordination information. The second terminal does not need to exclude resources and only needs to select resources from the set of applicable resources. This solution of this embodiment of the present invention effectively prevents the second terminal from transmitting on resources that are unsuitable for reception by the first terminal, improving the decoding success rate of the receiving terminal while enhancing the overall performance of the direct link.

[0142] Optionally, the method comprises:

[0143] Resources are excluded according to the second unsuitable resource set to obtain an applicable resource set and / or scheduling resources.

[0144] In one embodiment of the present invention, resources may be excluded based on the first unsuitable resource set and the second unsuitable resource set to obtain an applicable resource set and / or scheduling resources.

[0145] In one embodiment of the present invention, before excluding resources according to the second unsuitable resource set, the method may further include:

[0146] All resources within the resource indication window are initialized to obtain an initialization candidate resource set.

[0147] In one embodiment of the present invention, before performing resource exclusion according to the second unsuitable resource set, the method may further include: performing skip subframe exclusion on the initialization resource set.

[0148] In the resource selection method of this embodiment of the present invention, by excluding the second set of inappropriate resources to obtain the applicable resource set and / or scheduled resources, the first terminal can include only the applicable resource set when sending coordination information. The second terminal does not need to exclude resources and only needs to select resources from the applicable resource set. This solution of this embodiment of the present invention effectively prevents the second terminal from transmitting on resources that are not suitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0149] Optionally, the performing resource exclusion according to the second unsuitable resource set to obtain an applicable resource set and / or scheduled resources includes:

[0150] Determine a first initialization candidate resource set for the first terminal as all resources within the resource indication window;

[0151] The second unsuitable resource set is excluded from the first initialization candidate resource set to obtain a first candidate resource set.

[0152] It should be noted that the resource indication window may be a window preconfigured by the first terminal, or may be a preset window included in the coordination request signaling sent by the second terminal.

[0153] In one embodiment of the present invention, excluding resources according to the second unsuitable resource set to obtain the applicable resource set and / or scheduled resources may further include:

[0154] The first candidate resource set is subjected to resource exclusion based on unmonitored slot processing and RSRP power criteria to obtain an applicable resource set and / or scheduling resources.

[0155] In the resource selection method of an embodiment of the present invention, by excluding the second set of inappropriate resources to obtain the applicable resource set and / or scheduled resources, the first terminal can include only the applicable resource set when sending coordination information. The second terminal does not need to exclude resources and only needs to select resources from the applicable resource set. The solution of this embodiment of the present invention effectively prevents the second terminal from transmitting on resources that are not suitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0156] Optionally, the performing resource exclusion according to the second unsuitable resource set to obtain an applicable resource set and / or scheduled resources includes:

[0157] Eliminate resources according to the second unsuitable resource set to obtain the suitable resource set;

[0158] Resource selection is performed on the applicable resource set to obtain the scheduling resource.

[0159] In one embodiment of the present invention, performing resource selection on the applicable resource set to obtain the scheduling resource may include: sending the applicable resource set to a higher layer (eg, a MAC layer), performing resource selection, obtaining the scheduling resource, and sending the resource to the first terminal.

[0160] In the resource selection method of this embodiment of the present invention, by excluding the second set of unsuitable resources and selecting the scheduled resources, the first terminal can include only the scheduled resources when sending coordination information. The second terminal does not need to perform resource exclusion or resource selection and can only transmit based on the scheduled resources in the coordination information. This solution of this embodiment of the present invention effectively prevents the second terminal from transmitting on resources that are unsuitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0161] Second embodiment

[0162] like Figure 3 As shown, an embodiment of the present invention provides a resource selection method, comprising:

[0163] Step 301: receiving direct link coordination information sent by a first terminal;

[0164] Determining resources to be sent according to the direct link coordination information;

[0165] The direct link coordination information includes at least one of the following:

[0166] First, resource collection is not applicable;

[0167] Applicable resource collection;

[0168] Scheduling resources.

[0169] The resource selection method of an embodiment of the present invention receives, by a second terminal, direct link coordination information sent by a first terminal. The direct link coordination information may include at least one of a first inapplicable resource set, an applicable resource set, and a scheduled resource, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. Through the above-mentioned solution of the present invention, the content of the coordination information is improved, which can effectively prevent the sending terminal from transmitting on resources that are not suitable for the receiving terminal to receive, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link.

[0170] Optionally, the first unsuitable resource set includes at least one of the following:

[0171] All resources in the time domain where the sending resources of the first terminal are located;

[0172] High interference resources perceived by the first terminal;

[0173] The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

[0174] It should be noted that the sending resources of the first terminal include reserved resources; the target receiving address perceived by the first terminal is the third terminal of the first terminal, which can be understood as the terminal corresponding to the terminal ID in the information perceived by the first terminal through decoding the second-stage direct link control information (2nd-stage SCI); the sending resources of the third terminal are the sending resources on the direct link between the third terminal and the first terminal.

[0175] For example, the second terminal sends a coordination request signaling to the first terminal, wherein the coordination request information includes the half-duplex resources of the first terminal and the resource selection window position of the second terminal; the resource selection window position of the second terminal is used as the resource indication window, and the first terminal writes its sending resources (sending time slot set) within the resource indication window into the coordination information and sends it to the second terminal according to the resource indication window in the coordination request signaling.

[0176] In one embodiment of the present invention, all resources in the time domain where the sending resources of the first terminal are located and the high-interference resources perceived by the first terminal are resources that the first terminal cannot receive; at the same time, the first terminal can receive data sent by multiple terminals, and the sending resources of the third terminal are also resources that the first terminal cannot receive data sent by the second terminal.

[0177] The resource selection method of the embodiment of the present invention treats the resources on the first terminal that cannot be received by the second terminal as the first unsuitable resources, so that the second terminal can exclude the unsuitable resources, and can effectively avoid the second terminal from sending on the resources that are not suitable for the first terminal to receive, thereby improving the decoding success rate of the receiving terminal and improving the overall performance of the direct link.

[0178] Optionally, the method comprises:

[0179] excluding the first inapplicable resource set from the resource set of the second terminal;

[0180] Select the resource to be sent.

[0181] In one embodiment of the present invention, before excluding the first inapplicable resource set from the resource set of the second terminal, the method may further include:

[0182] Initializing all resources within the resource indication window to obtain an initialization candidate resource set;

[0183] The resource indication window is a resource selection window of the second terminal.

[0184] In one embodiment of the present invention, before excluding the first inapplicable resource set from the resource set of the second terminal, the method may further include: excluding skip subframes from the initialization resource set.

[0185] The resource selection method of this embodiment of the present invention excludes resources from the second terminal's resource set that overlap with subchannels in the first unsuitable resource set. The second terminal then performs resource selection to obtain resources to be transmitted. This effectively prevents the second terminal from transmitting on resources unsuitable for reception by the first terminal, improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0186] Optionally, excluding the first inapplicable resource set from the resource set of the second terminal includes:

[0187] Determine a second initialization candidate resource set for the second terminal as all resources within the resource selection window;

[0188] The first unsuitable resource set is excluded from the second initialization candidate resource set to obtain a second candidate resource set.

[0189] In this embodiment of the present invention, the second terminal, based on the received coordination information, excludes resources from the second initialization candidate resource set that overlap with subchannels in the first inappropriate resource set. This effectively prevents the second terminal from transmitting on resources that are unsuitable for reception by the first terminal, improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0190] Optionally, the method comprises:

[0191] After excluding resources based on unmonitored slot processing and / or RSRP power criteria, when comparing the number of remaining resources, the total number of resources is set to the number of resources of the second candidate resource set.

[0192] For example, after receiving the coordination information sent by the first terminal, the second terminal records all the initialization candidate resources in its own resource selection window as S according to its own perception. A , and S A The resources that overlap with the subchannels in the first inapplicable resource set in the coordination information are from S A Exclude from the set and generate a new candidate set S A ', where S A The total number of candidate resources in ' is recorded as M total ', continue in S A' excludes the skip slot resources that are not monitored, generates a new set of remaining resources, and then excludes the reserved resources whose RSRP is greater than the RSRP exclusion threshold in the remaining resource set according to the sensing result. At the same time, when the number of remaining resources is less than 20%*M total ', increase the RSRP exclusion threshold, for example, increase the RSRP exclusion threshold by 3dB, and exclude the reserved resources from the remaining resource set after excluding the skip slot until the number of remaining candidate resources in the remaining resource set is greater than or equal to 20%*M total ', the resource exclusion process stops.

[0193] For example, the second terminal receives the coordination information sent by the first terminal, which includes the first inapplicable resource set. The second terminal records all the initialization candidate resources in its own resource selection window as S according to its own perception. A , and S A The resources that overlap with the subchannels in the coordination information that are not applicable to the resource set are from S A Exclude from the set and generate a new candidate set S A ', where S A The total number of candidate resources in ' is recorded as M total ', continue in S A 'In the process, the reserved resources whose RSRP in the remaining resource set is greater than the RSRP exclusion threshold are excluded according to the perception result. When the number of remaining resources is less than 35%*M total ', increase the RSRP exclusion threshold and continue in S A 'The reserved resources are excluded from the remaining resource set until the number of remaining candidate resources in the remaining resource set is greater than or equal to 35%*M total ', the resource exclusion process stops.

[0194] Furthermore, in a solution of an embodiment of the present invention, resources can be excluded by the second terminal and resource selection can be performed by the second terminal at the same time; or resources can be excluded by the second terminal and then resource selection can be performed by a higher layer.

[0195] In this embodiment of the present invention, after the second terminal eliminates resources based on unmonitored slot processing and / or RSRP power criteria, when comparing the number of remaining resources, the total number of resources is set to the number of resources in the second candidate resource set. The number of remaining resources is then controlled based on the number of resources in the second candidate resource set, ensuring sufficient remaining resources for the second terminal to transmit. This effectively prevents the second terminal from transmitting on resources that are unsuitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0196] Optionally, the method comprises:

[0197] When the sending resources of the second terminal overlap with the first unsuitable resource set, resource reselection is performed on the sending resources.

[0198] In one embodiment of the present invention, reselecting the sending resource includes: reselecting the sending resource that overlaps with the first unsuitable resource set; or

[0199] Resource reselection is performed on the sending resources of all second terminals.

[0200] After receiving the first unsuitable resource set sent by the first terminal, the second terminal compares its own transmission resources or retransmission resources with the first unsuitable resource set. If neither is in the first unsuitable resource set, reselection is not triggered; otherwise, reselection of retransmission resources is triggered.

[0201] For example, after the second terminal receives the coordination information sent by the first terminal containing the first inapplicable resource set, it compares the sending resources or retransmission resources with the first inapplicable resource set. If at least one falls into the first inapplicable resource set, it triggers the reselection of the sending resources, retransmission resources or all retransmission resources. The triggering reselection moment can be used as the new resource selection moment, the new resource selection moment determines the front edge of the new resource selection window, and the trailing edge of the original resource selection window is used as the trailing edge of the new resource selection window. All resources other than the occupied resources in the resource selection window are recorded as the candidate resource set S A , and S A The resources that overlap with the subchannels in the first inapplicable resource set in the coordination information are from S A Exclude from the set and generate a new candidate set S A ', where S A The total number of candidate resources in ' is recorded as M total ', continue in S A ' excludes the skip slot resources in the remaining resource set to generate a new set of remaining resources, and then excludes the reserved resources whose RSRP is greater than the RSRP exclusion threshold in the remaining resource set according to the perception result. total ', increase the RSRP exclusion threshold, and continue to exclude the reserved resources in the remaining resource set after excluding the skip slot until the number of remaining candidate resources in the remaining resource set is greater than or equal to 20%*M total ', the resource exclusion process stops.

[0202] The resource selection method of this embodiment of the present invention determines the transmission and retransmission resources of a second terminal based on a first set of unsuitable resources, thereby triggering reselection of resources that overlap with the first set of unsuitable resources, or all resources. This effectively prevents the second terminal from transmitting on resources unsuitable for reception by the first terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0203] The solution of the embodiment of the present invention is as follows Figure 4 As shown, after receiving coordination request signaling or data from the second terminal, the first terminal initiates coordination and generates coordination information. After receiving the coordination information, the second terminal determines the resources to be sent. If the coordination information indicates an inapplicable resource set, the second terminal eliminates resources to obtain applicable resources, and then selects resources through the second terminal itself or a higher layer to obtain scheduled resources. If the coordination information indicates an applicable resource set, the second terminal itself or a higher layer selects resources to obtain scheduled resources.

[0204] Third embodiment

[0205] like Figure 5 As shown, an embodiment of the present invention provides a resource selection device 500, comprising:

[0206] A sending module 501 is configured to send direct link coordination information to a second terminal;

[0207] The direct link coordination information includes at least one of the following:

[0208] First, resource collection is not applicable;

[0209] Applicable resource collection;

[0210] Scheduling resources.

[0211] The resource selection device of an embodiment of the present invention transmits direct link coordination information to a second terminal via a first terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0212] Fourth embodiment

[0213] like Figure 6 As shown, an embodiment of the present invention provides a resource selection device 600, comprising:

[0214] The receiving module 601 is configured to receive direct link coordination information sent by the first terminal;

[0215] A determination module, configured to determine resources to be sent according to the direct link coordination information;

[0216] The direct link coordination information includes at least one of the following:

[0217] First, resource collection is not applicable;

[0218] Applicable resource collection;

[0219] Scheduling resources.

[0220] The resource selection device of an embodiment of the present invention receives, via a second terminal, direct link coordination information sent by a first terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal to receive, thereby improving the decoding success rate of the receiving terminal and enhancing the overall performance of the direct link.

[0221] Fifth embodiment

[0222] In order to better achieve the above goals, Figure 7 As shown, the present invention also provides a terminal device, which is specifically a first terminal, including: a processor 700; and a memory 720 connected to the processor 700 through a bus interface, the memory 720 is used to store programs and data used by the processor 700 when performing operations, and the processor 700 calls and executes the programs and data stored in the memory 720.

[0223] The transceiver 710 is connected to the bus interface and is used to receive and send data under the control of the processor 700;

[0224] The transceiver 710 is used to:

[0225] Sending direct link coordination information to the second terminal;

[0226] The direct link coordination information includes at least one of the following:

[0227] First, resource collection is not applicable;

[0228] Applicable resource collection;

[0229] Scheduling resources.

[0230] Among them, Figure 7In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by the processor 700 and the memory represented by the memory 720. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 710 may be a plurality of components, i.e., a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. For different terminals, the user interface 730 may also be an interface capable of connecting external or internal devices as required, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 when performing operations.

[0231] Optionally, the processor 700 is configured to:

[0232] The direct link coordination information is generated when at least one of the following conditions is met:

[0233] receiving a direct link coordination request signaling sent by the second terminal;

[0234] The direct link control information SCI including the coordination request identifier sent by the second terminal is received.

[0235] Optionally, the processor 700 is further configured to:

[0236] When receiving the direct link coordination request signaling including the second unsuitable resource set sent by the second terminal, the direct link coordination information is generated.

[0237] Optionally, the processor 700 is further configured to:

[0238] Eliminate resources based on the first unsuitable resource set and the second unsuitable resource set to obtain an applicable resource set and / or scheduling resources. Or,

[0239] Determine a first initialization candidate resource set for the first terminal as all resources within the resource indication window;

[0240] The first set of inappropriate resources and the second set of inappropriate resources are excluded from the first set of candidate resources for initialization to obtain a first set of candidate resources.

[0241] Eliminate resources according to the first unsuitable resource set and the second unsuitable resource set to obtain the applicable resource set;

[0242] Resource selection is performed on the applicable resource set to obtain the scheduling resource.

[0243] The terminal device provided by the present invention receives, via a second terminal, direct link coordination information sent by a first terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0244] In order to better achieve the above goals, Figure 8 As shown, the present invention also provides a terminal device, which is specifically a second terminal, including: a processor 800; and a memory 820 connected to the processor 800 through a bus interface, the memory 820 is used to store programs and data used by the processor 800 when performing operations, and the processor 800 calls and executes the programs and data stored in the memory 820.

[0245] The transceiver 810 is connected to the bus interface and is used to receive and send data under the control of the processor 800;

[0246] The transceiver 810 is used to:

[0247] receiving direct link coordination information sent by the first terminal;

[0248] Determining resources to be sent according to the direct link coordination information;

[0249] The direct link coordination information includes at least one of the following:

[0250] First, resource collection is not applicable;

[0251] Applicable resource collection;

[0252] Scheduling resources.

[0253] Among them, Figure 8In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by the processor 800 and the memory represented by the memory 820. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 810 may be a plurality of components, i.e., including a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. For different terminals, the user interface 830 may also be an interface capable of connecting external or internal devices as required, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 when performing operations.

[0254] Optionally, the transceiver 810 is configured to:

[0255] excluding the first inapplicable resource set from the resource set of the second terminal;

[0256] Select the resource to be sent. Or,

[0257] Determine a second initialization candidate resource set for the second terminal as all resources within the resource selection window;

[0258] The first unsuitable resource set is excluded from the second initialization candidate resource set to obtain a second candidate resource set. Or,

[0259] After excluding resources based on unmonitored slot processing and / or RSRP power criteria, when comparing the number of remaining resources, the total number of resources is set to the number of resources in the second candidate resource set. Or,

[0260] When the sending resources of the second terminal overlap with the first unsuitable resource set, resource reselection is performed on the sending resources.

[0261] The terminal device provided by the present invention receives, via a second terminal, direct link coordination information sent by a first terminal. The direct link coordination information may include at least one of a first set of inapplicable resources, a set of applicable resources, and scheduled resources, so that the second terminal performs resource exclusion and resource selection based on the direct link coordination information. The above-mentioned solution of the present invention improves the content of the coordination information, effectively preventing the transmitting terminal from transmitting on resources that are not suitable for the receiving terminal, thereby improving the decoding success rate of the receiving terminal and the overall performance of the direct link.

[0262] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by instructing relevant hardware through a computer program, wherein the computer program includes instructions for executing part or all of the steps of the above method; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

[0263] In addition, a specific embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When executed by a processor, the program implements the steps of the method in the first embodiment described above. The program can achieve the same technical effects and, to avoid repetition, is not further described here.

[0264] In addition, it should be noted that, in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0265] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device can be a well-known general-purpose device. Therefore, the purpose of the present invention can also be achieved simply by providing a program product containing program code that implements the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. In addition, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Certain steps can be performed in parallel or independently of each other.

[0266] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A resource selection method, applied to a first terminal, characterized in that: The method comprises: Upon receiving direct link coordination request signaling including a second inapplicable resource set sent by a second terminal, sending direct link coordination information to the second terminal; The direct link coordination information includes at least one of the following: First, resource collection is not applicable; Applicable resource collection; Scheduling resources; The second set of inapplicable resources includes at least one of the following: all resources in the time domain where the sending resources of the second terminal are located; high interference resources perceived by the second terminal; The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

2. The resource selection method according to claim 1, characterized in that: The first inapplicable resource set includes at least one of the following: All resources in the time domain where the sending resources of the first terminal are located; high interference resources perceived by the first terminal; The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

3. The resource selection method according to claim 2, characterized in that: The high-interference resource is: a resource whose reference signal received power (RSRP) value among the resources sensed by the first terminal exceeds a first reference signal received power (RSRP) threshold value.

4. The resource selection method according to claim 2, characterized in that: The priority of the service carried on the sending resources of the third terminal is higher than the priority of the service of the second terminal.

5. The resource selection method according to claim 1, characterized in that: The method comprises: Resources are excluded according to the second unsuitable resource set to obtain an applicable resource set and / or scheduling resources.

6. The resource selection method according to claim 5, characterized in that: Excluding resources according to the second unsuitable resource set to obtain the applicable resource set and / or scheduled resources includes: Determine a first initialization candidate resource set for the first terminal as all resources within the resource indication window; The second unsuitable resource set is excluded from the first initialization candidate resource set to obtain a first candidate resource set.

7. The resource selection method according to claim 5, characterized in that: The performing resource exclusion according to the second unsuitable resource set to obtain the applicable resource set and / or the scheduled resources includes: Eliminate resources according to the second unsuitable resource set to obtain the suitable resource set; Resource selection is performed on the applicable resource set to obtain the scheduling resource.

8. A resource selection method, applied to a second terminal, characterized in that: The method comprises: receiving direct link coordination information sent by the first terminal; Determining resources to be sent according to the direct link coordination information; The direct link coordination information includes at least one of the following: First, resource collection is not applicable; Applicable resource collection; Scheduling resources; In which, upon receiving the direct link coordination request signaling including the second inapplicable resource set sent by the second terminal, the first terminal sends the direct link coordination information to the second terminal: The second set of inapplicable resources includes at least one of the following: all resources in the time domain where the sending resources of the second terminal are located; high interference resources perceived by the second terminal; The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

9. The resource selection method according to claim 8, characterized in that: The first set of inapplicable resources includes at least one of the following: All resources in the time domain where the sending resources of the first terminal are located; high interference resources perceived by the first terminal; The target receiving address perceived by the first terminal is a sending resource of the third terminal of the first terminal.

10. The resource selection method according to claim 8, characterized in that: The method comprises: excluding the first inapplicable resource set from the resource set of the second terminal; Select the resource to be sent.

11. The resource selection method according to claim 10, characterized in that: The excluding the first inapplicable resource set from the resource set of the second terminal includes: Determine a second initialization candidate resource set for the second terminal as all resources within the resource selection window; The first unsuitable resource set is excluded from the second initialization candidate resource set to obtain a second candidate resource set.

12. The resource selection method according to claim 11, characterized in that: The method comprises: After excluding resources based on unmonitored slot processing and / or RSRP power criteria, when comparing the number of remaining resources, the total number of resources is set to the number of resources of the second candidate resource set.

13. The resource selection method according to claim 8, characterized in that: The method comprises: When the sending resources of the second terminal overlap with the first unsuitable resource set, resource reselection is performed on the sending resources.

14. A terminal device comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the processor implements the steps of the resource selection method according to any one of claims 1 to 8; or implements the steps of the resource selection method according to any one of claims 9 to 13.

15. A resource selection device, applied to a first terminal, characterized in that: include: a sending module, configured to send direct link coordination information to the second terminal upon receiving direct link coordination request signaling including a second inapplicable resource set sent by the second terminal; The direct link coordination information includes at least one of the following: First, resource collection is not applicable; Applicable resource collection; Scheduling resources; The second set of inapplicable resources includes at least one of the following: all resources in the time domain where the sending resources of the second terminal are located; high interference resources perceived by the second terminal; The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

16. A resource selection device, applied to a second terminal, characterized in that: include: A receiving module, configured to receive direct link coordination information sent by the first terminal; A determination module, configured to determine resources to be sent according to the direct link coordination information; The direct link coordination information includes at least one of the following: First, resource collection is not applicable; Applicable resource collection; Scheduling resources; In which, upon receiving the direct link coordination request signaling including the second inapplicable resource set sent by the second terminal, the first terminal sends the direct link coordination information to the second terminal: The second set of inapplicable resources includes at least one of the following: all resources in the time domain where the sending resources of the second terminal are located; high interference resources perceived by the second terminal; The target receiving address perceived by the second terminal is a sending resource of the fourth terminal of the second terminal.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the resource selection method according to any one of claims 1 to 8 are implemented; or the steps of the resource selection method according to any one of claims 9 to 13 are implemented.

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