A method, apparatus and user equipment for resource selection of a sidelink

Abstract

This invention provides a method, apparatus, and user equipment for selecting resources for a direct link. The method is applied to a user equipment and includes: determining transmission resources for a first transmission; the first transmission is used for positioning and includes one of the following: transmission of a direct link positioning reference signal (SL PRS); transmission of the SL PRS and first information, the first information including indication information of the first transmission, and / or, information for positioning. The solution of this invention can support the implementation of direct link positioning, meet the transmission resource requirements of direct link positioning, and thus achieve the location determination of the user equipment.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, apparatus, and user equipment for selecting resources for a direct link. Background Technology

[0002] A typical application of direct links is vehicle-to-everything (V2X) communication. V2X applications require the precise location of user equipment, especially mobile terminals (including OBUs and VRUs). Conventional positioning methods are based on the Global Navigation Satellite System (GNSS) or enhanced GNSS positioning. However, in areas with poor GNSS signal coverage (such as urban canyons) and areas without GNSS signal coverage (tunnels, underground parking lots, underground coal mines, underground transportation channels, etc.), other positioning technologies are needed to ensure positioning performance.

[0003] Cellular vehicle-to-everything (C-V2X) includes LTE-V2X and NR-V2X, supporting direct link and cellular network uplink and downlink communication. C-V2X devices can communicate with base stations within cellular network coverage; both within and outside cellular network coverage, C-V2X can communicate via direct link.

[0004] 3GPP Release 16 initiated research and standardization of NR Positioning (cellular network downlink). Within cellular network coverage, base stations transmit cell-specific downlink positioning reference signals (PRS), while terminals transmit uplink sounding reference signals (SRS) for positioning. Correspondingly, terminals can measure the reference signal time difference (RSTD), or the reference signal receiving power (RSRP) of the downlink positioning reference signal (DL PRS), or the time difference between receiving the DL PRS and transmitting the SRS. Base stations can measure the uplink relative time of arrival (RTOA), the RSRP of the SRS, the time difference between the base station (gNB) receiving the SRS and the gNB transmitting the DL PRS, and angle measurements, etc. By processing these measurements, the UE's position is calculated.

[0005] Currently, V2X applications require communication both within and outside cellular network coverage. However, existing vehicle-to-everything (V2X) positioning primarily relies on GNSS. In the absence of GNSS, cellular network-based positioning can be considered, but this requires V2X devices to operate outside cellular network coverage. Furthermore, existing cellular network positioning technologies are not specifically designed for vehicle movement and have limited positioning accuracy. On the other hand, research on Sidelink positioning has not yet begun. If Sidelink positioning is supported in the future, appropriate resource selection methods need to be determined based on the characteristics of Sidelink technology to determine the location of user equipment. Summary of the Invention

[0006] This invention provides a resource selection method, apparatus, and user equipment for a direct link, which solves the problem that there is no corresponding resource selection method for direct link positioning technology in the prior art.

[0007] In a first aspect, embodiments of the present invention provide a resource selection method for a direct link, applied to a user equipment, comprising:

[0008] Determine the transmission resources for the first transmission;

[0009] The first transmission is used for positioning and includes one of the following:

[0010] Transmission of Sidelink Positioning Reference Signal (SLPRS);

[0011] The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning.

[0012] Optionally, before determining the transport resources for a transport, the method further includes:

[0013] Determine the transmission method of the first transmission.

[0014] Optionally, the transmission method includes at least one of the following:

[0015] The first type of transmission method is unidirectional transmission;

[0016] The second type of transmission method is Single Way-Round Trip (SW-RT).

[0017] The third type of transmission mode is asymmetric two-way round trip (TW-RT).

[0018] The fourth type of transmission mode is Symmetric Two Way-Round Trip (STW-RT).

[0019] Optionally, determining the transmission method of the first transmission includes at least one of the following:

[0020] The transmission method of the first transmission is determined based on the network configuration or pre-configuration;

[0021] The transmission method of the first transmission is determined based on the capabilities of the user equipment itself;

[0022] The transmission mode of the first transmission is determined based on the capabilities of the peer user equipment;

[0023] The transmission mode of the first transmission is determined according to the request or instruction from the peer user equipment;

[0024] The transmission method of the first transmission is determined based on the time synchronization information between the positioning anchor node devices;

[0025] The user equipment determines the transmission mode of the first transmission based on whether it has N anchor nodes that meet the positioning requirements;

[0026] The transmission mode of the first transmission is determined based on whether the peer user equipment supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation.

[0027] The user equipment determines the transmission method for the first transmission itself.

[0028] Optionally, the time synchronization information includes at least one of the following:

[0029] Time synchronization method;

[0030] Time synchronization accuracy;

[0031] Time synchronization source type;

[0032] Time synchronization source priority;

[0033] The time offset indication compared to the reference time.

[0034] Optionally, the user equipment determines the transmission mode of the first transmission based on whether it has N anchor nodes that meet the positioning requirements, including:

[0035] If no fewer than N anchor nodes indicate that the time synchronization meets the accuracy or indicate the time offset relative to the reference time, then this node is determined to be able to perform the first type of transmission mode.

[0036] Optionally, determining the transmission mode of the first transmission based on whether the peer node supports local clock crystal oscillator offset estimation and / or antenna element processing delay difference estimation includes:

[0037] If the peer node supports local clock oscillator offset estimation and / or antenna element processing delay difference estimation, it is determined that the local node and the peer node can perform a second transmission mode.

[0038] Optionally, the process of determining the transmission resources for the first transmission includes at least one of the following methods:

[0039] In any given journey, the time interval between the first transmission time-domain resource location and the current positioning reference time does not exceed the first threshold value;

[0040] During the sensing process of the SL PRS, if a target resource is detected to be reserved among the candidate transmission resources of the SL PRS, the target resource is directly excluded from the candidate resources of the SL PRS.

[0041] Optionally, the positioning reference time includes any of the following:

[0042] The location reference time is the location initiation time;

[0043] The positioning reference time is the most recent time after the positioning initiation time when the first transmission and reception were completed;

[0044] The positioning reference time is the time after the positioning initiation time when the first transmission was most recently received and the processing time was taken into account.

[0045] The positioning reference time is located in the first time period, which is the time period after the positioning initiation time and after the most recent completion of the first transmission and reception, and the time interval between the first transmission and reception time is not less than the second threshold value.

[0046] The positioning reference time is time T1, which is determined according to the following formula:

[0047] T1 = t + (n - 1) × P / m; where t is the location initiation time, m is the total number of first transmission interactions in the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay.

[0048] The positioning reference time is time T2, which is determined according to the following formula:

[0049] T2=t+(n-1)×P / m-t procWhere t is the location initiation time, m is the total number of first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, P is the location update period or the maximum location delay, and t proc For processing time.

[0050] Optionally, determining the transmission resources for the first transmission includes one of the following:

[0051] Select the transmission resources for the unidirectional transmission of the first transmission;

[0052] Select the transmission resource combination of the first transmission, wherein the transmission resource combination of the first transmission includes one of the following: RT resource combination, two-way RT resource combination, and two-way RT resource combination excluding the first transmission.

[0053] Determine its own transmission resources based on at least one combination of transmission resources of the first transmission indicated by the peer user equipment;

[0054] Based on the first resource sent by the peer user equipment, determine the combination of transmission resources corresponding to the first resource;

[0055] From the multiple combinations of transmission resources corresponding to the first resource of the first transmission sent by the peer user equipment, select one transmission resource combination.

[0056] Optionally, the method further includes:

[0057] When the transmission resources intended for the first transmission overlap with those intended for the second transmission in the time domain, and the user equipment's capabilities cannot support concurrency or require power-division transmission, at least one of the following processing steps shall be performed:

[0058] Compare the transmission priority of the first transmission with the transmission priority of the second transmission, and reselect transmission resources for the low-priority transmission, or abandon the low-priority transmission, or give priority to ensuring the transmission power of the high-priority transmission.

[0059] The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0060] Process according to the source or priority of its own location information;

[0061] Processing is performed based on the source or priority of the received location information of nearby user equipment;

[0062] The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0063] Optionally, the process of comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold includes:

[0064] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0065] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then resources are reselected for the first transmission, or the transmission of the first transmission is discarded, or the transmission power of the second transmission is given priority.

[0066] Optionally, the processing based on the source or priority of its own location information includes:

[0067] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0068] If the source of its own location information is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0069] Optionally, the processing based on the source or priority of the received location information of nearby user equipment includes:

[0070] If the source of the received location information of the neighboring user equipment is reliable, or the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the second transmission are reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0071] If the source of the received location information of the neighboring user equipment is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0072] Optionally, the method further includes:

[0073] When the transmission resources to be used for the first transmission overlap with the reception resources to receive the third transmission in the time domain, or when the reception resources to be used for receiving the first transmission overlap with the transmission resources to be used for the second transmission in the time domain, and the user equipment cannot perform both sending and receiving simultaneously, one of the following processing steps shall be performed:

[0074] Compare the transmission priority of the first transmission with the transmission priority of the third transmission, and discard the operation with the lower priority;

[0075] The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0076] Process according to the source or priority of its own location information;

[0077] Processing is performed based on the source or priority of the received location information of nearby user equipment;

[0078] The third transmission can be any one of direct link positioning, direct link communication, direct link synchronization, or cellular link transmission.

[0079] Optionally, the process of comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold includes:

[0080] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold value, then the operation of the first transmission is executed;

[0081] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then the operation of the first transmission is discarded.

[0082] Optionally, the processing based on the source or priority of its own location information includes:

[0083] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed;

[0084] If the source of its own location information is unreliable, or if its priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation will be performed.

[0085] Optionally, the processing based on the source or priority of the received location information of nearby user equipment includes:

[0086] If the source of the received location information of the neighboring user equipment is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed.

[0087] If the source of the received location information of the neighboring user equipment is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation is performed.

[0088] In a second aspect, embodiments of the present invention provide a user equipment, including: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the resource selection method for a pass-through link as described in the first aspect.

[0089] Thirdly, embodiments of the present invention provide a resource selection device for a direct link, comprising:

[0090] The resource determination module is used to determine the transmission resources for the first transmission.

[0091] The first transmission is used for positioning and includes one of the following:

[0092] Transmission of the direct link positioning reference signal SL PRS;

[0093] The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning.

[0094] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, characterized in that, when executed by a processor, the computer program implements the steps of the resource selection method for a pass-through link as described in the first aspect.

[0095] The beneficial effects of the above-mentioned technical solution of the present invention are:

[0096] The present invention addresses this issue by determining the transmission resources for a first transmission used for positioning, including one of the following: transmission of a direct-link positioning reference signal (SL PRS); transmission of the SL PRS and first information, wherein the first information includes indication information of the first transmission and / or information for positioning. This supports the implementation of direct-link positioning, meets the transmission resource requirements for direct-link positioning, and enables the determination of the user equipment's location. It solves the problem in the prior art that there is no resource selection method corresponding to the features of direct-link positioning technology. Attached Figure Description

[0097] Figure 1 A flowchart illustrating the resource selection method for a through link according to an embodiment of the present invention;

[0098] Figure 2 A structural block diagram illustrating the resource selection device for a through link according to an embodiment of the present invention;

[0099] Figure 3 This is a structural block diagram illustrating a user equipment according to an embodiment of the present invention. Detailed Implementation

[0100] To make the technical problems, technical solutions, and advantages of this invention clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0101] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0102] In various embodiments of the present invention, it should be understood that the sequence number of each process described below does not imply 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.

[0103] In addition, the terms "system" and "network" are often used interchangeably in this article.

[0104] In the embodiments provided in this application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information.

[0105] In this embodiment of the invention, the form of the access network is not limited, and can include access networks such as macro base stations, micro base stations, Node Bs (a term for 3G mobile base stations), enhanced base stations (eNBs), home enhanced base stations (Femto eNBs, Home eNode Bs, Home eNBs, or HeNBs), relay stations, access points, RRUs (Remote Radio Units), and RRHs (Remote Radio Heads). The user terminal can be a mobile phone (or cell phone), or other devices capable of sending or receiving wireless signals, including user equipment, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptops, cordless phones, wireless local loop (WLL) stations, CPEs (Customer Premise Equipment) or mobile smart hotspots capable of converting mobile signals into WiFi signals, smart home appliances, or other devices that can spontaneously communicate with the mobile communication network without human intervention.

[0106] First, it should be noted that 3GPP has not yet initiated standardization work for pass-through positioning technology. If pass-through positioning is to be supported in the future, a specific positioning mechanism will need to be designed based on the specific characteristics and features of the technology. In particular, the selection of pass-through positioning resources will require targeted design for the specific positioning signal / information transmission process. The main technical challenges are as follows:

[0107] How to determine which positioning signal / information transmission process is being performed during the current positioning process;

[0108] How to determine the corresponding resource selection method based on different positioning signal / information transmission processes;

[0109] How to ensure that the resource selection method can meet the high frequency and low latency requirements of vehicle-to-everything (V2X) positioning under different positioning signal / information transmission methods;

[0110] How to ensure sufficient and reliable positioning signal / information transmission under different positioning signal / information transmission methods.

[0111] Therefore, current technology does not yet support sidelink positioning. If sidelink positioning is to be researched and supported in the future, specific technical solutions will be required.

[0112] Specifically, embodiments of the present invention provide a method, apparatus, and user equipment for selecting resources for a direct link, which solves the problem that there is no resource selection method corresponding to the direct link positioning technology features in the prior art.

[0113] First Embodiment

[0114] like Figure 1 As shown, embodiments of the present invention provide a resource selection method for a through link, which is applied to user equipment, wherein the user equipment includes, but is not limited to: roadside unit (RSU), handheld terminal, and onboard unit (OBU).

[0115] Specifically, the methods include:

[0116] Step 11: Determine the transmission resources for the first transmission;

[0117] The first transmission is used for positioning and includes one of the following:

[0118] Transmission of the direct link positioning reference signal SL PRS;

[0119] The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning.

[0120] Wherein, the first transmission is a transmission on a direct link, and the first information includes at least one of the following:

[0121] The first transmitted scheduling and control information;

[0122] The priority of the SL PRS;

[0123] The priority of the location information of the first user equipment;

[0124] The confidence level of the location information of the first user equipment;

[0125] The type of SL PRS;

[0126] The interaction method of the SL PRS;

[0127] Third information.

[0128] The scheduling control information of the first transmission includes at least one of the following:

[0129] Dedicated frequency band;

[0130] Unlicensed frequency bands;

[0131] frequency band;

[0132] carrier wave;

[0133] Bandwidth portion BWP;

[0134] Resource pool;

[0135] Time-domain resource location;

[0136] The time interval from the current SCI;

[0137] The time interval relative to the current SPI;

[0138] The time interval for repeated transmissions by the SL PRS;

[0139] The number of times the SL PRS performs repeated transmissions;

[0140] The transmission period of the SL PRS;

[0141] The time interval between the current SL PRS transmission cycle and the next adjacent SL PRS transmission cycle;

[0142] Frequency domain resource locations with resource sets as the scheduling granularity;

[0143] Frequency domain resource locations with sub-channels as the scheduling granularity;

[0144] Frequency domain resource locations with comb-tooth resource blocks as the scheduling granularity;

[0145] Frequency domain resource locations with sub-channel and edge combination resources as the scheduling granularity.

[0146] The third information includes at least one of the following:

[0147] Location information of the first user equipment;

[0148] The identifier ID information of the first user equipment;

[0149] Location information of adjacent user equipment;

[0150] ID information of adjacent user equipment;

[0151] Source of location information for adjacent user equipment;

[0152] Confidence level of location information of adjacent user equipment;

[0153] The first indication information is used to indicate whether the current positioning signal / information is used for absolute or relative positioning;

[0154] The second indication information is used to indicate whether the first user equipment can act as an anchor node;

[0155] Supports auxiliary location calculation;

[0156] Supports automatic position calculation;

[0157] The third indication information is used to indicate whether the first user equipment maintains high-precision time synchronization with other anchor nodes;

[0158] Information about other user equipment that maintains high-precision time synchronization with the first user equipment;

[0159] The estimated time difference between the maintenance time of the first user equipment and the reference time;

[0160] The frequency offset rate of the local timer device of the first user equipment;

[0161] The frequency offset value of the local timer device of the first user equipment and the corresponding reference measurement time;

[0162] Whether the different antenna elements of the first user equipment have a processing time offset;

[0163] The processing time deviation value of different antenna elements of the first user equipment.

[0164] In this embodiment, by determining the transmission resources of the direct link positioning reference signal SL PRS or the transmission resources of SL PRS and the first information, the realization of direct link positioning can be supported, the transmission resource requirements of direct link positioning can be met, and the location of the user equipment can be determined. This solves the problem that there is no resource selection method corresponding to the technical features of direct link positioning in the prior art.

[0165] In one embodiment, before determining the transmission resources for the first transmission, the method further includes:

[0166] Determine the transmission method of the first transmission.

[0167] The transmission method of the first transmission includes at least one of the following:

[0168] The first type of transmission method is unidirectional transmission;

[0169] The second type of transmission mode for one-way round trip SW-RT;

[0170] The third type of asymmetric two-way round-trip TW-RT transmission mode;

[0171] The fourth type of transmission mode is symmetrical two-way STW-RT.

[0172] In this embodiment, the second type of transmission mode for single-trip SW-RT can be understood as a transmission mode that supports at least one of the two nodes to measure the round-trip time (RTT); the third type of transmission mode for asymmetric round-trip TW-RT and the fourth type of transmission mode for symmetric round-trip STW-RT can be understood as transmission modes that support at least one of the two nodes to measure the round-trip time (RTT). Symmetric and asymmetric refer to the following: in the symmetric mode, the time interval between the user equipment and the peer user equipment receiving the first transmission from the other party and then feeding back their own first transmission is equal; while in the asymmetric mode, it is not expected that the time interval between the two user equipments receiving the first transmission from the other party and then feeding back their own first transmission is equal.

[0173] Specifically, determining the transmission method of the first transmission includes at least one of the following eight methods:

[0174] Method 1: Determine the transmission method of the first transmission based on network configuration or pre-configuration;

[0175] Method 2: Determine the transmission method of the first transmission based on the capabilities of the user equipment itself;

[0176] For example, the transmission method of the first transmission is determined according to the mapping table between the user equipment's own capabilities and the transmission method.

[0177] Method 3: Determine the transmission method of the first transmission based on the capabilities of the peer user equipment;

[0178] For example, the transmission method of the first transmission is determined according to the mapping table between the capabilities of the peer user equipment and the transmission method.

[0179] Method 4: Determine the transmission method of the first transmission according to the request or instruction of the peer user equipment;

[0180] Method 5: Determine the transmission method of the first transmission based on the time synchronization information between the positioning anchor node devices;

[0181] Specifically, the time synchronization information includes at least one of the following:

[0182] Time synchronization method;

[0183] Time synchronization accuracy;

[0184] Time synchronization source type;

[0185] Time synchronization source priority;

[0186] The time offset indication compared to the reference time.

[0187] Method 6: The user equipment determines the transmission method of the first transmission based on whether it has N anchor nodes that meet the positioning requirements;

[0188] Specifically, method 6 includes: when no less than N anchor nodes indicate that the time synchronization meets the accuracy or indicates the time offset relative to the reference time, it is determined that this node can execute the first type of transmission method.

[0189] For example, TDOA positioning supports one-dimensional positioning when N=2; two-dimensional positioning when N=3; and three-dimensional positioning when N=4.

[0190] Method 7: Determine the transmission mode of the first transmission based on whether the peer user equipment supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation;

[0191] Specifically, method 7 includes: determining that the local node and the peer node can perform a second transmission method when the peer node supports local clock crystal oscillator offset estimation and / or the antenna element processes delay difference estimation.

[0192] Method 8: The user equipment determines the transmission method of the first transmission itself.

[0193] Step 11 will be described below.

[0194] First, in one embodiment, the process of determining the transmission resources for the first transmission includes at least one of the following methods:

[0195] Method 1: The time interval between the first transmission time domain resource location and the current positioning reference time in any given process does not exceed the first threshold value;

[0196] In this method one, the first transmission may include the transmission of a set of SL PRS or the repeated transmission of at least two SL PRS, or the transmission of a set of SL PRS and the first information, or the repeated transmission of at least two SL PRS and the first information.

[0197] The positioning reference time includes any one of the following five types:

[0198] The first method: The positioning reference time is the positioning initiation time;

[0199] The second method: The positioning reference time is the most recent time after the positioning initiation time when the first transmission and reception were completed;

[0200] The third type: The positioning reference time is the time after the positioning initiation time when the first transmission was most recently received and the processing time was taken into account;

[0201] The fourth type: The positioning reference time is located in the first time period, which is the time period after the positioning initiation time and after the most recent completion of the first transmission and reception, and the time interval between the first transmission and reception time is not less than the second threshold value.

[0202] The second threshold value includes at least one of the following: the reception processing time of the first transmission, the resource selection time, the transmission preparation time, and the feedback time.

[0203] Specifically, depending on the transmission method of the first transmission, the range of the threshold value includes any one of the following:

[0204] When the transmission mode is the first type of transmission mode, the threshold value is less than or equal to the location update period or the maximum delay;

[0205] When the transmission mode is the first type of transmission mode and the processing delay of the first transmission is taken into account, the threshold value is less than or equal to the position update period or the maximum delay;

[0206] When the transmission mode is the second type of transmission mode, the threshold value is less than or equal to 1 / 2 of the position update period or the maximum delay;

[0207] When the transmission mode is the second type of transmission mode and the processing delay of the first transmission is taken into account, the threshold value is less than or equal to 1 / 2 of the position update period or the maximum delay;

[0208] When the transmission mode is a third type of transmission mode or a fourth type of transmission mode, the threshold value is less than or equal to 1 / 4 of the position update period or the maximum delay;

[0209] When the transmission mode is a third type of transmission mode or a fourth type of transmission mode and the processing delay of the first transmission is taken into account, the threshold value is less than or equal to 1 / 4 of the position update period or the maximum delay.

[0210] The first type of transmission method is unidirectional transmission; the second type of transmission method is a one-way round-trip SW-RT transmission method; the third type of transmission method is an asymmetric two-way round-trip TW-RT transmission method; and the fourth type of transmission method is a symmetric two-way round-trip STW-RTT transmission method.

[0211] The fifth method: The positioning reference time is time T determined according to the following formula:

[0212] T = t + (n - 1) × P / m; where t is the location initiation time, m is the total number of first transmission interactions in the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay.

[0213] The positioning reference time is time T2, which is determined according to the following formula:

[0214] T2=t+(n-1)×P / m-t proc Where t is the location initiation time, m is the total number of first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, P is the location update period or the maximum location delay, and t proc For processing time.

[0215] Specifically, processing time t proc Includes at least one of the following:

[0216] Control the decoding time of information;

[0217] Measurement time of the reference signal;

[0218] Location information processing time;

[0219] Processing time for data in the direct link;

[0220] Resource selection time;

[0221] Sending preparation time.

[0222] In this fifth method, the positioning reference time is determined based on the current first transmission interaction.

[0223] Method 2: During the sensing process of the SL PRS, if the target resource is detected to be reserved among the candidate transmission resources of the SL PRS, the target resource is directly excluded from the candidate resources of the SL PRS.

[0224] It should be noted that this second method does not perform RSRP comparison. If more than one UE sends SL-PRS on the same resource, it will further reduce the accuracy of SL-PRS multipath detection, causing additional ranging or positioning errors.

[0225] Secondly, in one embodiment, determining the transmission resources for the first transmission includes one of the following:

[0226] Select the transmission resources for the unidirectional transmission of the first transmission;

[0227] Select the transmission resource combination of the first transmission, wherein the transmission resource combination of the first transmission includes one of the following: RT resource combination, two-way RT resource combination, and two-way RT resource combination excluding the first transmission.

[0228] Determine its own transmission resources based on at least one combination of transmission resources of the first transmission indicated by the peer user equipment;

[0229] Based on the first resource sent by the peer user equipment, determine the combination of transmission resources corresponding to the first resource;

[0230] From the multiple combinations of transmission resources corresponding to the first resource of the first transmission sent by the peer user equipment, select one transmission resource combination.

[0231] In this embodiment, by enhancing resource selection and exclusion methods, the low latency and high refresh rate requirements of vehicle-to-everything (V2X) positioning can be ensured, and the problem of multipath effect caused by SL-PRS superposition significantly affecting measurement accuracy can be avoided.

[0232] When transmitting the first transmission on the transmission resource, the transmission is performed through at least one of the following channels:

[0233] Physical Sidelink Positioning Channel (PSPCH);

[0234] Physical Sidelink Shared Channel (PSSCH);

[0235] Physical sidelink control channel (PSCCH);

[0236] Physical Sidelink Feedback Channel (PSFCH);

[0237] Physical Sidelink Discovery Channel (PSDCH);

[0238] Physical Sidelink Broadcast Channel (PSBCH);

[0239] A dedicated channel for SL PRS transmission.

[0240] Furthermore, in one embodiment, the method further includes:

[0241] When the transmission resources intended for the first transmission overlap with those intended for the second transmission in the time domain, and the user equipment's capabilities cannot support concurrency or require power-division transmission, at least one of the following four processing steps shall be performed:

[0242] In the first processing step, the transmission priority of the first transmission is compared with that of the second transmission. For the low-priority transmission, transmission resources are reselected, or the low-priority transmission is abandoned, or the transmission power of the high-priority transmission is guaranteed. The second transmission is any one of direct link communication, direct link synchronization, or cellular link transmission.

[0243] The second processing step involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value, and then performing the processing.

[0244] Specifically, step two of the process includes:

[0245] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0246] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then resources will be reselected for the first transmission, the first transmission will be discarded, or the transmission power of the second transmission will be prioritized. The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0247] The third step in the processing is to process the information based on its source or priority.

[0248] Specifically, step three includes:

[0249] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0250] If the source of its own location information is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0251] Step four involves processing the received location information of nearby user equipment based on its source or priority.

[0252] Specifically, step four includes:

[0253] If the source of the received location information of the neighboring user equipment is reliable, or the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the second transmission are reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0254] If the source of the received location information of the neighboring user equipment is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0255] Furthermore, in one embodiment, the method further includes:

[0256] When the transmission resources to be used for the first transmission overlap with the reception resources to receive the third transmission in the time domain, or when the reception resources to be used for receiving the first transmission overlap with the transmission resources to be used for the third transmission in the time domain, and the user equipment cannot perform both sending and receiving simultaneously, one of the following four processing steps shall be executed:

[0257] Processing step A: Compare the transmission priority of the first transmission with the transmission priority of the third transmission, and abandon the operation with lower priority;

[0258] The third transmission can be any one of direct link positioning, direct link communication, direct link synchronization, or cellular link transmission.

[0259] Processing step B: Process by comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value;

[0260] Specifically, processing step B includes:

[0261] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold value, then the operation of the first transmission is executed;

[0262] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then the operation of the first transmission is discarded.

[0263] Processing step C: Process the information based on its source or priority;

[0264] Specifically, processing step C includes:

[0265] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed;

[0266] If the source of its own location information is unreliable, or if its priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation will be performed.

[0267] The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0268] Processing step D: Process the received location information of nearby user equipment according to its source or priority;

[0269] Specifically, processing step D includes:

[0270] If the source of the received location information of the neighboring user equipment is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed.

[0271] If the source of the received location information of the neighboring user equipment is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation is performed.

[0272] The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0273] In this embodiment, for the concurrent operation of direct link positioning (first transmission) and second transmission, priority operation is determined by combining different situations of priority and positioning requirements, which can ensure the reliable execution of high-priority transmission.

[0274] Second Embodiment

[0275] like Figure 2 As shown, a second embodiment of the present invention provides a resource selection device 200 for a direct link, applied to a user equipment, specifically including:

[0276] Resource determination module 201 is used to determine the transmission resources of the first transmission;

[0277] The first transmission is used for positioning and includes one of the following:

[0278] Transmission of the direct link positioning reference signal SL PRS;

[0279] The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning.

[0280] Optionally, the aforementioned device 200 further includes:

[0281] The first determining module is used to determine the transmission method of the first transmission.

[0282] Optionally, the transmission method includes at least one of the following:

[0283] The first type of transmission method is unidirectional transmission;

[0284] The second type of transmission mode for one-way round trip SW-RT;

[0285] The third type of asymmetric two-way round-trip TW-RT transmission mode;

[0286] The fourth type of symmetrical two-way STW-RT transmission mode.

[0287] Optionally, the first determining module includes at least one of the following:

[0288] The first determining submodule is used to determine the transmission mode of the first transmission based on network configuration or pre-configuration.

[0289] The second determining submodule is used to determine the transmission mode of the first transmission based on the capabilities of the user equipment itself.

[0290] The third determining submodule is used to determine the transmission mode of the first transmission based on the capabilities of the peer user equipment;

[0291] The fourth determining submodule is used to determine the transmission mode of the first transmission based on the request or instruction from the peer user equipment.

[0292] The fifth determining submodule is used to determine the transmission mode of the first transmission based on the time synchronization information between the positioning anchor node devices;

[0293] The sixth determining submodule is used to determine the transmission mode of the first transmission based on whether there are N anchor nodes that meet the positioning requirements;

[0294] The seventh determining submodule is used to determine the transmission mode of the first transmission based on whether the peer user equipment supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation.

[0295] The eighth determining submodule is used by the user equipment to determine the transmission mode of the first transmission.

[0296] Optionally, the time synchronization information includes at least one of the following:

[0297] Time synchronization method;

[0298] Time synchronization accuracy;

[0299] Time synchronization source type;

[0300] Time synchronization source priority;

[0301] The time offset indication compared to the reference time.

[0302] Optionally, the sixth determining submodule includes:

[0303] The first determining unit is used to determine that the node can perform the first type of transmission mode when no less than N anchor nodes indicate that the time synchronization meets the accuracy or indicates the time offset relative to the reference time; wherein, when N=2, one-dimensional positioning is supported; when N=3, two-dimensional positioning is supported; and when N=4, three-dimensional positioning is supported.

[0304] Optionally, the seventh determination submodule includes:

[0305] The second determining unit is used to determine whether the local node and the peer node can perform the second transmission mode, provided that the peer node supports local clock crystal oscillator offset estimation and / or the antenna unit processes delay difference estimation.

[0306] Optionally, the resource determination module 201 includes at least one of the following:

[0307] The first processing submodule is configured such that the time interval between the first transmission time domain resource location and the current positioning reference time in any given process does not exceed a first threshold value.

[0308] The second processing submodule is used to, during the process of sensing the SL PRS, directly exclude the target resource from the candidate resources of the SL PRS when it is detected that the target resource is reserved.

[0309] Optionally, the positioning reference time includes any of the following:

[0310] The location reference time is the location initiation time;

[0311] The positioning reference time is the most recent time after the positioning initiation time when the first transmission and reception were completed;

[0312] The positioning reference time is the time after the positioning initiation time when the first transmission was most recently received and the processing time was taken into account.

[0313] The positioning reference time is located in the first time period, which is the time period after the positioning initiation time and after the most recent completion of the first transmission and reception, and the time interval between the first transmission and reception time is not less than the second threshold value.

[0314] The positioning reference time is time T, which is determined according to the following formula:

[0315] T = t + (n - 1) × P / m; where t is the location initiation time, m is the total number of first transmission interactions in the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay.

[0316] The positioning reference time is time T2, which is determined according to the following formula:

[0317] T2=t+(n-1)×P / m-t proc Where t is the location initiation time, m is the total number of first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, P is the location update period or the maximum location delay, and t proc For processing time.

[0318] Optionally, the resource determination module 201 includes one of the following:

[0319] The third processing submodule is used to select the transmission resources for the unidirectional transmission of the first transmission;

[0320] The fourth processing submodule is used to select the transmission resource combination of the first transmission, wherein the transmission resource combination of the first transmission includes one of the following: RT resource combination, two-way RT resource combination, and two-way RT resource combination excluding the first transmission.

[0321] The fifth processing submodule is used to determine its own transmission resources based on at least one combination of transmission resources of the first transmission indicated by the peer user equipment.

[0322] The sixth processing submodule is used to determine the transmission resource combination corresponding to the first resource based on the first resource sent by the peer user equipment for the first transmission.

[0323] The seventh processing submodule is used to select one transmission resource combination from multiple transmission resource combinations corresponding to the first transmission resource sent by the peer user equipment.

[0324] Optionally, the aforementioned device 200 further includes:

[0325] The first processing module is configured to perform at least one of the following processing steps when the transmission resources to be used for the first transmission overlap with the transmission resources to be used for the second transmission in the time domain, and the user equipment's capabilities cannot support concurrency or require power-division transmission:

[0326] The second processing module is used to compare the transmission priority of the first transmission with the transmission priority of the second transmission, and to reselect transmission resources for the low-priority transmission, or abandon the low-priority transmission, or give priority to ensuring the transmission power of the high-priority transmission.

[0327] The third processing module is used to process the data by comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0328] The fourth processing module is used to process its own location information based on its source or priority.

[0329] The fifth processing module is used to process the received location information of nearby user equipment according to its source or priority.

[0330] The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0331] Optionally, the third processing module includes:

[0332] The first processing unit is configured to, if the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold, reselect transmission resources for the second transmission, abandon the transmission of the second transmission, or prioritize the transmission power of the first transmission.

[0333] The second processing unit is configured to, if the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, reselect resources for the first transmission, discard the transmission of the first transmission, or prioritize the transmission power of the second transmission.

[0334] Optionally, the fourth processing module includes:

[0335] The fourth processing unit is configured to, if the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then reselect transmission resources for the second transmission, or abandon the transmission of the second transmission, or prioritize ensuring the transmission power of the first transmission.

[0336] The fifth processing unit is configured to, if the source of its own location information is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, reselect transmission resources for the first transmission, abandon the transmission of the first transmission, or prioritize the transmission power of the second transmission.

[0337] Optionally, the fifth processing module includes:

[0338] The sixth processing unit is configured to, if the source of the received location information of the neighboring user equipment is reliable, or the priority is higher than or equal to the priority corresponding to the configured priority threshold, then reselect transmission resources for the second transmission, or abandon the transmission of the second transmission, or prioritize the transmission power of the first transmission.

[0339] The seventh processing unit is configured to, if the source of the received location information of the neighboring user equipment is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, reselect transmission resources for the first transmission, abandon the transmission of the first transmission, or prioritize the transmission power of the second transmission.

[0340] Optionally, the aforementioned device 200 further includes:

[0341] The sixth processing module is configured to perform one of the following processing steps when the transmission resources to be used for the first transmission overlap with the reception resources to be used for the third transmission in the time domain, or when the reception resources to be used for the first transmission overlap with the transmission resources to be used for the third transmission in the time domain, and the user equipment cannot simultaneously perform transmission and reception:

[0342] The seventh processing module is used to compare the transmission priority of the first transmission with the transmission priority of the third transmission, and abandon the operation with lower priority.

[0343] The eighth processing module is used to process data by comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0344] The ninth processing module is used to process its own location information based on its source or priority.

[0345] The tenth processing module is used to process the received location information of nearby user equipment according to its source or priority.

[0346] The third transmission can be any one of direct link positioning, direct link communication, direct link synchronization, or cellular link transmission.

[0347] Optionally, the eighth processing module includes:

[0348] The eighth processing unit is configured to execute the operation of the first transmission if the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold value.

[0349] The ninth processing unit is configured to discard the operation of the first transmission if the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold value.

[0350] Optionally, the ninth processing module includes:

[0351] The tenth processing unit is used to perform the first transmission operation if the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold value.

[0352] The eleventh processing unit is used to perform a third transmission operation if the source of its own location information is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold value.

[0353] Optionally, the tenth processing module includes:

[0354] The twelfth processing unit is configured to perform the first transmission operation if the source of the received location information of the neighboring user equipment is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold value.

[0355] The thirteenth processing unit is configured to perform a third transmission operation if the source of the received location information of a nearby user equipment is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold.

[0356] The second embodiment of the present invention corresponds to the method of the first embodiment described above. All the implementation means in the first embodiment described above are applicable to the embodiment of the resource selection device for the direct link, and can achieve the same technical effect.

[0357] Third Embodiment

[0358] To better achieve the above objectives, such as Figure 3 As shown, a third embodiment of the present invention also provides a user equipment, including: a processor 300; and a memory 320 connected to the processor 300 via a bus interface, the memory 320 being used to store programs and data used by the processor 300 when performing operations, and the processor 300 calling and executing the programs and data stored in the memory 320.

[0359] The transceiver 310 is connected to a bus interface and is used to receive and send data under the control of the processor 300; the processor 300 is used to read the program in the memory 320.

[0360] Specifically, the processor 300 is used to determine the transmission resources for the first transmission;

[0361] The first transmission is used for positioning and includes one of the following:

[0362] Transmission of the direct link positioning reference signal SL PRS;

[0363] The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning.

[0364] Among them, Figure 3 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 300) and memory (memory 320). The bus architecture can also link various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 310 can be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium. For different terminals, the user interface 330 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc. The processor 300 is responsible for managing the bus architecture and general processing, and the memory 320 can store data used by the processor 300 during operation.

[0365] Optionally, before determining the transmission resources for the first transmission, the processor 300 further includes:

[0366] Determine the transmission method of the first transmission.

[0367] Optionally, the transmission method includes at least one of the following:

[0368] The first type of transmission method is unidirectional transmission;

[0369] The second type of transmission mode for one-way round trip SW-RT;

[0370] The third type of asymmetric two-way round-trip TW-RT transmission mode;

[0371] The fourth type of transmission mode is symmetrical two-way STW-RT.

[0372] Optionally, when determining the transmission mode of the first transmission, the processor 300 specifically uses at least one of the following:

[0373] The transmission method of the first transmission is determined based on the network configuration or pre-configuration;

[0374] The transmission method of the first transmission is determined based on the capabilities of the user equipment itself;

[0375] The transmission mode of the first transmission is determined based on the capabilities of the peer user equipment;

[0376] The transmission mode of the first transmission is determined according to the request or instruction from the peer user equipment;

[0377] The transmission method of the first transmission is determined based on the time synchronization information between the positioning anchor node devices;

[0378] The user equipment determines the transmission mode of the first transmission based on whether it has N anchor nodes that meet the positioning requirements;

[0379] The transmission mode of the first transmission is determined based on whether the peer user equipment supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation.

[0380] The user equipment determines the transmission method for the first transmission itself.

[0381] Optionally, the time synchronization information includes at least one of the following:

[0382] Time synchronization method;

[0383] Time synchronization accuracy;

[0384] Time synchronization source type;

[0385] Time synchronization source priority;

[0386] The time offset indication compared to the reference time.

[0387] Optionally, when determining the transmission mode of the first transmission based on whether there are N anchor nodes that meet the positioning requirements, the processor 300 specifically includes:

[0388] If no fewer than N anchor nodes indicate that the time synchronization meets the accuracy or indicate the time offset relative to the reference time, then this node is determined to be able to perform the first type of transmission mode; where N=2 supports one-dimensional positioning; N=3 supports two-dimensional positioning; and N=4 supports three-dimensional positioning.

[0389] Optionally, the processor 300 determines the transmission mode of the first transmission based on whether the peer node supports local clock crystal oscillator offset estimation and / or, antenna unit processing delay difference estimation, including:

[0390] If the peer node supports local clock oscillator offset estimation and / or antenna element processing delay difference estimation, it is determined that the local node and the peer node can perform a second transmission mode.

[0391] Optionally, the processor 300 may determine the transmission resources for the first transmission in at least one of the following ways:

[0392] In any given journey, the time interval between the first transmission time-domain resource location and the current positioning reference time does not exceed the first threshold value;

[0393] During the sensing process of the SL PRS, if a target resource is detected to be reserved among the candidate transmission resources of the SL PRS, the target resource is directly excluded from the candidate resources of the SL PRS.

[0394] Optionally, the positioning reference time includes any of the following:

[0395] The location reference time is the location initiation time;

[0396] The positioning reference time is the most recent time after the positioning initiation time when the first transmission and reception were completed;

[0397] The positioning reference time is the time after the positioning initiation time when the first transmission was most recently received and the processing time was taken into account.

[0398] The positioning reference time is located in the first time period, which is the time period after the positioning initiation time and after the most recent completion of the first transmission and reception, and the time interval between the first transmission and reception time is not less than the second threshold value.

[0399] The positioning reference time is time T, which is determined according to the following formula:

[0400] T = t + (n - 1) × P / m; where t is the location initiation time, m is the total number of first transmission interactions in the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay.

[0401] The positioning reference time is time T2, which is determined according to the following formula:

[0402] T2=t+(n-1)×P / m-t proc Where t is the location initiation time, m is the total number of first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, P is the location update period or the maximum location delay, and t proc For processing time.

[0403] Optionally, when determining the transmission resources for the first transmission, the processor 300 may specifically use one of the following:

[0404] Select the transmission resources for the unidirectional transmission of the first transmission;

[0405] Select the transmission resource combination of the first transmission, wherein the transmission resource combination of the first transmission includes one of the following: RT resource combination, two-way RT resource combination, and two-way RT resource combination excluding the first transmission.

[0406] Determine its own transmission resources based on at least one combination of transmission resources of the first transmission indicated by the peer user equipment;

[0407] Based on the first resource sent by the peer user equipment, determine the combination of transmission resources corresponding to the first resource;

[0408] From the multiple combinations of transmission resources corresponding to the first resource of the first transmission sent by the peer user equipment, select one transmission resource combination.

[0409] Optionally, processor 300 is also used for:

[0410] When the transmission resources intended for the first transmission overlap with those intended for the second transmission in the time domain, and the user equipment's capabilities cannot support concurrency or require power-division transmission, at least one of the following processing steps shall be performed:

[0411] Compare the transmission priority of the first transmission with the transmission priority of the second transmission, and reselect transmission resources for the low-priority transmission, or abandon the low-priority transmission, or give priority to ensuring the transmission power of the high-priority transmission.

[0412] The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0413] Process according to the source or priority of its own location information;

[0414] Processing is performed based on the source or priority of the received location information of nearby user equipment;

[0415] The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

[0416] Optionally, when the processor 300 processes data by comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold, it specifically performs the following:

[0417] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0418] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then resources are reselected for the first transmission, or the transmission of the first transmission is discarded, or the transmission power of the second transmission is given priority.

[0419] Optionally, when the processor 300 processes the location information based on its source or priority, it is specifically used for:

[0420] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0421] If the source of its own location information is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0422] Optionally, when the processor 300 processes the received location information of nearby user equipment based on its source or priority, it specifically performs the following:

[0423] If the source of the received location information of the neighboring user equipment is reliable, or the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the second transmission are reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first.

[0424] If the source of the received location information of the neighboring user equipment is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

[0425] Optionally, processor 300 is also used for:

[0426] When the transmission resources to be used for the first transmission overlap with the reception resources to receive the third transmission in the time domain, or when the reception resources to be used for receiving the first transmission overlap with the transmission resources to be used for the third transmission in the time domain, and the user equipment cannot perform both sending and receiving simultaneously, one of the following processing steps shall be performed:

[0427] Compare the transmission priority of the first transmission with the transmission priority of the third transmission, and discard the operation with the lower priority;

[0428] The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value.

[0429] Process according to the source or priority of its own location information;

[0430] Processing is performed based on the source or priority of the received location information of nearby user equipment;

[0431] The third transmission can be any one of direct link positioning, direct link communication, direct link synchronization, or cellular link transmission.

[0432] Optionally, when the processor 300 processes data by comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold, it specifically performs the following:

[0433] If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold value, then the operation of the first transmission is executed;

[0434] If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then the operation of the first transmission is discarded.

[0435] Optionally, when processing based on the source or priority of its own location information, the processor 300 is specifically used for:

[0436] If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed;

[0437] If the source of its own location information is unreliable, or if its priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation will be performed.

[0438] Optionally, when the processor 300 processes the received location information of nearby user equipment based on its source or priority, it specifically performs the following:

[0439] If the source of the received location information of the neighboring user equipment is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed.

[0440] If the source of the received location information of the neighboring user equipment is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation is performed.

[0441] The user equipment provided by this invention, by determining the transmission resources of the direct link positioning reference signal SL PRS or the transmission resources of SL PRS and first information, can support the realization of direct link positioning, meet the transmission resource requirements of direct link positioning, and thus achieve the location determination of the user equipment. This solves the problem in the prior art that there is no resource selection method corresponding to the technical features of direct link positioning.

[0442] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a computer program instructing the relevant hardware to implement them. The computer program includes instructions to perform some or all of the steps of the above methods; and the computer program can be stored in a readable storage medium, which can be any form of storage medium.

[0443] In addition, specific embodiments of the present invention also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the methods described in the first or second embodiment. The same technical effects can be achieved, and to avoid repetition, further details are omitted here.

[0444] Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of the present invention. Moreover, the steps performing the above-described series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0445] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a known general-purpose device. Therefore, the object of the present invention can also be achieved simply by providing a program product containing program code implementing the method or apparatus. That is, 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 known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent to the present invention. Furthermore, the steps performing the above series of processes can naturally be performed in the order described, but are not necessarily required to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0446] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A resource selection method for a direct link, characterized in that, Applied to user equipment, including: Determine the transmission resources for the first transmission; The first transmission is used for positioning and includes one of the following: Transmission of the direct link positioning reference signal SL PRS; The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning; The determination of the transmission resources for the first transmission includes: selecting a combination of transmission resources for the first transmission, wherein the combination of transmission resources for the first transmission includes one of the following: a combination of RT resources, a combination of two-way RT resources, and a combination of two-way RT resources excluding the first transmission. The process of determining the transmission resources for the first transmission includes at least one of the following methods: In any given journey, the time interval between the first transmission time-domain resource location and the current positioning reference time does not exceed the first threshold value; During the sensing process of the SL PRS, if a target resource is detected to be reserved among the candidate transmission resources of the SL PRS, the target resource is directly excluded from the candidate resources of the SL PRS.

2. The resource selection method for a direct link according to claim 1, characterized in that, Before determining the transmission resources for the first transmission, the process also includes: Determine the transmission method of the first transmission.

3. The resource selection method for a direct link according to claim 2, characterized in that, The transmission method includes at least one of the following: The first type of transmission method is unidirectional transmission; The second type of transmission mode for one-way round trip SW-RT; The third type of asymmetric two-way round-trip TW-RT transmission mode; The fourth type of transmission mode is symmetrical two-way STW-RT.

4. The resource selection method for a direct link according to claim 2, characterized in that, The determination of the transmission method of the first transmission includes at least one of the following: The transmission method of the first transmission is determined based on the network configuration or pre-configuration; The transmission method of the first transmission is determined based on the capabilities of the user equipment itself; The transmission mode of the first transmission is determined based on the capabilities of the peer user equipment; The transmission mode of the first transmission is determined according to the request or instruction from the peer user equipment; The transmission method of the first transmission is determined based on the time synchronization information between the positioning anchor node devices; The user equipment determines the transmission mode of the first transmission based on whether it has N anchor nodes that meet the positioning requirements; The transmission mode of the first transmission is determined based on whether the peer user equipment supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation. The user equipment determines the transmission method for the first transmission itself.

5. The resource selection method for a direct link according to claim 4, characterized in that, The time synchronization information includes at least one of the following: Time synchronization method; Time synchronization accuracy; Time synchronization source type; Time synchronization source priority; The time offset indication compared to the reference time.

6. The resource selection method for a direct link according to claim 4, characterized in that, The user equipment determines the transmission mode of the first transmission based on whether there are N anchor nodes that meet the positioning requirements, including: If no fewer than N anchor nodes indicate that the time synchronization meets the accuracy or indicate the time offset relative to the reference time, then this node is determined to be able to perform the first type of transmission mode.

7. The resource selection method for a direct link according to claim 4, characterized in that, The step of determining the transmission mode of the first transmission based on whether the peer node supports local clock crystal oscillator offset estimation and / or antenna unit processing delay difference estimation includes: If the peer node supports local clock oscillator offset estimation and / or antenna element processing delay difference estimation, it is determined that the local node and the peer node can perform a second transmission mode.

8. The method according to claim 1, characterized in that, The positioning reference time includes any of the following: The location reference time is the location initiation time; The positioning reference time is the most recent time after the positioning initiation time when the first transmission and reception were completed; The positioning reference time is the time after the positioning initiation time when the first transmission was most recently received and the processing time was taken into account. The positioning reference time is located in the first time period, which is the time period after the positioning initiation time and after the most recent completion of the first transmission and reception, and the time interval between the first transmission and reception time is not less than the second threshold value. The positioning reference time is time T1, which is determined according to the following formula: T1 = t + (n-1) × P / m; where t is the location initiation time, m is the total number of the first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay. The positioning reference time is time T2, which is determined according to the following formula: T2 = t + (n-1) ×P / m-t proc Where t is the location initiation time, m is the total number of the first transmission interactions during the first transmission interaction process, n is the sequence number of the current first transmission in the first transmission interaction process, and P is the location update period or the maximum location delay; t proc For processing time.

9. The resource selection method for a direct link according to claim 1, characterized in that, The method further includes: When the transmission resources intended for the first transmission overlap with those intended for the second transmission in the time domain, and the user equipment's capabilities cannot support concurrency or require power-division transmission, at least one of the following processing steps shall be performed: Compare the transmission priority of the first transmission with the transmission priority of the second transmission, and reselect transmission resources for the low-priority transmission, or abandon the low-priority transmission, or give priority to ensuring the transmission power of the high-priority transmission. The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value. Process according to the source or priority of its own location information; Processing is performed based on the source or priority of the received location information of nearby user equipment; The second transmission can be any one of direct link communication, direct link synchronization, or cellular link transmission.

10. The resource selection method for a direct link according to claim 9, characterized in that, The process of comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold includes: If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first. If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then resources are reselected for the first transmission, or the transmission of the first transmission is discarded, or the transmission power of the second transmission is given priority.

11. The resource selection method for a direct link according to claim 9, characterized in that, The processing based on the source or priority of its own location information includes: If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the second transmission is reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first. If the source of its own location information is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resource for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

12. The resource selection method for a direct link according to claim 9, characterized in that, The process based on the source or priority of the received location information of nearby user equipment includes: If the source of the received location information of the neighboring user equipment is reliable, or the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the second transmission are reselected, or the transmission of the second transmission is abandoned, or the transmission power of the first transmission is guaranteed first. If the source of the received location information of the neighboring user equipment is unreliable, or the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the transmission resources for the first transmission will be reselected, or the transmission of the first transmission will be abandoned, or the transmission power of the second transmission will be given priority.

13. The resource selection method for a direct link according to claim 1, characterized in that, The method further includes: When the transmission resources to be used for the first transmission overlap with the reception resources to receive the third transmission in the time domain, or when the reception resources to be used for receiving the first transmission overlap with the transmission resources to be used for the third transmission in the time domain, and the user equipment cannot perform both sending and receiving simultaneously, one of the following processing steps shall be performed: Compare the transmission priority of the first transmission with the transmission priority of the third transmission, and discard the operation with the lower priority; The process involves comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold value. Process according to the source or priority of its own location information; Processing is performed based on the source or priority of the received location information of nearby user equipment; The third transmission can be any one of direct link positioning, direct link communication, direct link synchronization, or cellular link transmission.

14. The resource selection method for a direct link according to claim 13, characterized in that, The process of comparing the transmission priority of the first transmission with the priority corresponding to the configured priority threshold includes: If the transmission priority of the first transmission is higher than or equal to the priority corresponding to the configured priority threshold value, then the operation of the first transmission is executed; If the transmission priority of the first transmission is lower than or equal to the priority corresponding to the configured priority threshold, then the operation of the first transmission is discarded.

15. The resource selection method for a direct link according to claim 13, characterized in that, The processing based on the source or priority of its own location information includes: If the source of its own location information is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed; If the source of its own location information is unreliable, or if its priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation will be performed.

16. The resource selection method for a direct link according to claim 13, characterized in that, The process based on the source or priority of the received location information of nearby user equipment includes: If the source of the received location information of the neighboring user equipment is reliable, or if the priority is higher than or equal to the priority corresponding to the configured priority threshold, then the first transmission operation is performed. If the source of the received location information of the neighboring user equipment is unreliable, or if the priority is lower than or equal to the priority corresponding to the configured priority threshold, then the third transmission operation is performed.

17. A user equipment, comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the computer program, it implements the steps of the resource selection method for a pass-through link as described in any one of claims 1 to 16.

18. A resource selection device for a direct link, characterized in that, include: The resource determination module is used to determine the transmission resources for the first transmission. The first transmission is used for positioning and includes one of the following: Transmission of the direct link positioning reference signal SL PRS; The transmission of SL PRS and first information, the first information including indication information for the first transmission, and / or, information for positioning; The resource determination module is specifically used to select the transmission resource combination of the first transmission, wherein the transmission resource combination of the first transmission includes one of the following: RT resource combination, two-way RT resource combination, and two-way RT resource combination excluding the first transmission. The process of determining the transmission resources for the first transmission includes at least one of the following methods: In any given journey, the time interval between the first transmission time-domain resource location and the current positioning reference time does not exceed the first threshold value; During the sensing process of the SL PRS, if a target resource is detected to be reserved among the candidate transmission resources of the SL PRS, the target resource is directly excluded from the candidate resources of the SL PRS.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the resource selection method for a pass-through link as described in any one of claims 1 to 16.

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