A method and apparatus for transmitting a side-link SL positioning reference signal (PRS).

Abstract

This disclosure provides a method and apparatus for transmitting SL PRS, applicable to communication systems. The method includes: determining an SL PRS resource reservation period for transmitting multiple SL PRS signals in an autonomous resource allocation mode; determining an SL PRS transmission resource group, wherein the SL PRS transmission resource group includes multiple SL PRS transmission resources spaced at SL PRS resource reservation period intervals; and transmitting multiple SL PRS signals through the SL PRS transmission resource group. This disclosure enables terminal devices to transmit multiple SL PRS signals in an autonomous resource selection mode, enhancing the functionality of SL PRS transmission and thus improving the communication performance of SL positioning services.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method and apparatus for transmitting a side-link SL positioning reference signal PRS. Background Technology

[0002] Terminal devices can communicate with each other via sidelinks (SL), for example, by transmitting sidelink positioning reference signals (SL PRS) for SL positioning. However, there is still no consensus on how to transmit multiple SL PRS under the autonomous resource selection mode. Summary of the Invention

[0003] This disclosure provides a method and apparatus for transmitting side-link SL positioning reference signals (PRS), enabling terminal devices to transmit multiple SL PRS signals under autonomous resource selection mode, thereby improving the communication performance of SL positioning services.

[0004] In a first aspect, embodiments of this disclosure provide a method for transmitting a side-link SL positioning reference signal PRS, executed by a first device. The method includes: in an autonomous resource allocation mode, determining an SL PRS resource reservation period for transmitting multiple SL PRS; determining an SL PRS transmission resource group, wherein the SL PRS transmission resource group includes multiple SL PRS transmission resources spaced at SL PRS resource reservation periods; and transmitting multiple SL PRS through the SL PRS transmission resource group.

[0005] In some embodiments, determining the SL PRS resource reservation period for transmitting multiple SL PRSs includes any one of the following: determining the SL PRS resource reservation period based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device, wherein the configuration information of the SL data transmission resource pool carries configuration information of the SL PRS resource reservation period; or determining the SL PRS resource reservation period through the configuration information of the SL data transmission resource pool carrying the configuration information of the SL data transmission resource pool for SL data transmission; and determining the transmission period of the SL PRS as the resource reservation period. The transmission period of the side-link SL positioning reference signal PRS is used as the resource reservation period.

[0006] In some embodiments, determining the SL PRS resource reservation period for sending multiple SL PRS includes: determining an SL PRS resource reservation period group based on the configuration information of the SL PRS resource reservation period, wherein the SL PRS resource reservation period group includes multiple SL PRS resource reservation periods; and determining the SL PRS resource reservation period for sending multiple SL PRS from the SL PRS resource reservation period group.

[0007] In some embodiments, the method further includes: abandoning the transmission of multiple SL PRS when the configuration information for the SL PRS resource reservation period is empty, or when the first device is configured not to transmit multiple SL PRS.

[0008] In some embodiments, the resource reservation period is greater than or equal to the latency requirement or remaining latency requirement of SL PRS transmission.

[0009] In some embodiments, the method further includes: determining the value of the SL PRS resource reselection counter; and determining whether to perform resource reselection based on the value of the SL PRS resource reselection counter.

[0010] In some embodiments, determining the value of the SL PRS resource reselection counter includes any one of the following: determining the value of the SL PRS resource reselection counter based on the configuration information of the SL PRS resource reselection counter sent by the network device; determining the value of the SL PRS resource reselection counter based on the pre-configuration information of the first device; or randomly selecting the value of the SL PRS resource reselection counter.

[0011] In some embodiments, randomly selecting the value of the SL PRS resource reselection counter includes: determining a selection range based on a first parameter, a second parameter, and a third parameter, wherein the first parameter and the second parameter are positive integers greater than or equal to 1 and less than or equal to a first preset value, and the third parameter is a second preset value or a value that changes with the SL PRS resource reservation period; and randomly selecting the value of the SL PRS resource reselection counter from the selection range.

[0012] In some embodiments, the method further includes: determining a third parameter based on the SL PRS resource reservation period.

[0013] In some embodiments, determining the third parameter based on the SL PRS resource reservation period includes: when the SL PRS resource reservation period is greater than or equal to the fourth parameter, determining the third parameter as a second preset value, wherein the fourth parameter is a positive integer greater than or equal to 1 and less than or equal to the third preset value; when the SL PRS resource reservation period is less than the fourth parameter, determining the maximum value between the SL PRS resource reservation period and the fifth parameter, and determining the ratio between the third parameter and the maximum value as the third parameter, wherein the fifth parameter is a positive integer greater than or equal to 1 and less than or equal to the fourth parameter.

[0014] In some embodiments, the method further includes: determining at least one of a first parameter, a second parameter, a third parameter, a fourth parameter, and a fifth parameter based on any one of the parameter configuration information sent by the network device, the pre-configuration information of the first device, and the protocol agreement information.

[0015] In some embodiments, the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter are parameters specifically used for SLPRS transmission or parameters shared with SL data transmission.

[0016] In some embodiments, determining whether to perform resource reselection based on the value of the SL PRS resource reselection counter includes: determining to perform resource reselection when the value of the SL PRS resource reselection counter is 0.

[0017] In some embodiments, determining to perform resource reselection when the value of the SL PRS resource reselection counter is 0 includes: randomly selecting a reference value within the range of [0,1] when the value of the SL PRS resource reselection counter is 1; and determining to perform resource reselection when the value of the SL PRS resource reselection counter is 0 when the reference value is greater than a fourth preset value.

[0018] In some embodiments, the method further includes: determining a fourth preset value based on parameter configuration information sent by the network device or pre-configuration information of the first device.

[0019] In some embodiments, the fourth preset value is a parameter dedicated to SL PRS transmission or a parameter shared with SL data transmission. A second aspect of this disclosure provides an apparatus for transmitting a sidelink SL positioning reference signal (PRS), executed by a first device. The apparatus includes a transceiver module configured to: after transmitting the SL PRS to a second device, retransmit the SL PRS based on or not based on SL PRS feedback information from the second device.

[0020] A third aspect of this disclosure provides a retransmission device for a sidelink positioning reference signal (SL) PRS, executed by a second device. The device includes: a first determining module, configured to determine, in an autonomous resource allocation mode, an SL PRS resource reservation period for transmitting multiple SL PRS; a second determining module, configured to determine an SL PRS transmission resource group, wherein the SL PRS transmission resource group includes multiple SL PRS transmission resources spaced at SL PRS resource reservation periods; and a transmitting module, configured to transmit multiple SL PRS through the SL PRS transmission resource group.

[0021] A fourth aspect of this disclosure provides a communication device, including: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to control the transmission and reception of wireless signals of the transceiver by executing computer-executable instructions on the memory, and capable of implementing the methods described in the first or second aspect of this disclosure.

[0022] A fifth aspect of this disclosure provides a computer-readable storage medium for storing instructions that, when executed, cause the method described in the first or second aspect of this disclosure to be implemented.

[0023] This disclosure provides a transmitter and apparatus for a sidelink (SL) positioning reference signal (PRS). A first device can determine an SL PRS resource reservation period for transmitting multiple SL PRS signals in an autonomous resource allocation mode. The first device can also determine an SL PRS transmission resource group, wherein the SL PRS transmission resource group includes multiple SL PRS transmission resources spaced at SL PRS resource reservation period intervals. The first device can transmit multiple SL PRS signals through the SL PRS transmission resource group. This disclosure enables terminal devices to transmit multiple SL PRS signals in an autonomous resource selection mode, ensuring transmission functionality and thus improving the communication performance of the SL positioning service. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0025] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure;

[0026] Figure 2 This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0027] Figure 3This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0028] Figure 4 This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0029] Figure 5 This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0030] Figure 6 This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0031] Figure 7 This is a flowchart illustrating a method for transmitting a side-link SL positioning reference signal PRS according to an embodiment of this disclosure;

[0032] Figure 8 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0033] Figure 9 This is a schematic diagram of the chip structure provided in an embodiment of this disclosure. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0035] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0036] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of embodiments of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when," "when," or "in response to a determination." For the purpose of brevity and ease of understanding, the terms "greater than" or "less than," "higher than," or "lower than" are used herein to characterize size relationships. However, it will be understood by those skilled in the art that the term "greater than" also encompasses the meaning of "greater than or equal to," and "less than" also encompasses the meaning of "less than or equal to"; the term "higher than" also encompasses the meaning of "higher than or equal to," and "lower than" also encompasses the meaning of "lower than or equal to."

[0037] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0038] Quality of Service (QoS) refers to the probability that a network will fulfill a given service contract, or, in many cases, informally, the probability that a packet will pass between two points in the network. QoS is a control mechanism that provides different priorities for different users or different data streams, or guarantees that the performance of data streams reaches a certain level based on application requirements.

[0039] The Positioning Reference Signal (PRS) is used for positioning measurements, and the positioning device can perform positioning based on the measurement results.

[0040] To better understand the method for transmitting a side-link SL positioning reference signal PRS disclosed in this disclosure, the communication system to which this disclosure applies will be described first.

[0041] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is exemplified by a network device 101 and a terminal device 102.

[0042] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems. It should also be noted that the side link in this disclosure can also be referred to as a side link or a direct link.

[0043] The network device 101 in this embodiment is a network-side entity used for transmitting or receiving signals. For example, the network device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device. The network device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure allows the protocol layer of a network device, such as a base station, to be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0044] The terminal device 102 in this disclosure is a user-side entity used to receive or transmit signals, such as a mobile phone. The terminal device can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. This disclosure does not limit the specific technology or device form used in the terminal device.

[0045] In sidelink communication, there are four sidelink transmission modes. Sidelink transmission mode 1 and sidelink transmission mode 2 are used for device-to-device (D2D) communication. Sidelink transmission modes 3 and 4 are used for V2X communication. When sidelink transmission mode 3 is used, resource allocation is scheduled by network device 101. Specifically, network device 101 can send resource allocation information to terminal device 102, which then allocates resources to another terminal device, enabling that other terminal device to send information to network device 101 using the allocated resources. In V2X communication, terminal device 102 can be selected as the terminal device with a better signal or higher reliability. In this embodiment, the first terminal device mentioned can refer to terminal device 102, and the second terminal device can refer to the other terminal device.

[0046] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0047] The methods provided in this disclosure can be applied to SL positioning services or other services. SL positioning services include SL absolute positioning, SL relative positioning, and ranging. Absolute positioning determines the absolute coordinates of the UE, relative positioning determines the coordinates of the UE relative to a reference point, and ranging determines the distance and / or angle of the UE relative to a reference point. Positioning methods include, but are not limited to, SL RTT (Round Trip Time), SL TDOA (Time Difference of Arrival), SL AOA (Angle of Arrival), SL carrier phase, etc., or combined with UU positioning (radio interface positioning between the UE and the base station).

[0048] It should be noted that the side-link SL positioning reference signal PRS transmission method provided in any embodiment of this disclosure can be executed alone, or it can be executed together with possible implementation methods in other embodiments, or it can be executed together with any technical solution in related technologies.

[0049] The following describes in detail, with reference to the accompanying drawings, the method and apparatus for transmitting the side-link SL positioning reference signal PRS provided in this disclosure.

[0050] Please refer to Figure 2 , Figure 2 This disclosure provides a flowchart illustrating a method for transmitting a side-link SL (Site Link Level) positioning reference signal (PRS) according to an embodiment. The method is executed by a first device, such as... Figure 2 As shown, the method includes, but is not limited to, the following steps:

[0051] S201, in the autonomous resource allocation mode, determine the SL PRS resource reservation period for sending multiple SL PRS.

[0052] Optionally, the first device can be one of a primary positioning assist UE, a positioning assist UE, and a UE being positioned. Optionally, the positioning assist UE can exist in different types; for example, the positioning assist UE can be an RSU-type positioning assist UE, which can provide positioning services by cooperating with other RSUs; another example is that the positioning assist UE can be a regular UE. In some implementations, some positioning assist UEs have location information such as GPS, which can assist other UEs in performing absolute positioning; other positioning assist UEs may not have location information such as GPS.

[0053] In some optional implementations, the first device can determine the SLPRS resource reservation period for transmitting multiple SLPRS signals in an autonomous resource allocation mode. The SLPRS resource reservation period is a predefined transmission period interval.

[0054] In some embodiments of this disclosure, under a resource allocation mode based on autonomous selection, the first device can utilize the SL PRS resource reservation period to obtain multiple periodic time resources divided by a predefined transmission period interval, thereby preparing reserved resources for subsequent multiple SL PRS transmissions. This disclosure does not limit the configuration method of the SL PRS resource reservation period; examples are provided below.

[0055] 1) The SL PRS resource reservation period can be configured based on the dedicated SL-PRS transmission resource pool. For example, the method includes: determining the SL PRS resource reservation period according to the configuration information of the dedicated SL-PRS transmission resource pool of the first device.

[0056] In some implementations, the configuration information of the dedicated SLPRS transmission resource pool carries the configuration information of the SLPRS resource reservation period. The first device can determine the configuration information of the SLPRS resource reservation period based on the dedicated SLPRS transmission resource pool.

[0057] 2) The SL PRS resource reservation period can be configured based on the shared resource pool. The shared resource pool refers to the SL PRS sending resources and SL data sending resources sharing the same resource pool. That is, the SL PRS is sent using resources in the SL data sending resource pool.

[0058] For example, the first device can send configuration information of the resource pool according to the SL data of the first device, wherein the configuration information of the resource pool sent by the SL data carries the configuration information of the SL PRS resource reservation period.

[0059] In other words, the configuration information of the SL data transmission resource pool of the first device includes configuration information about the SL PRS resource reservation period, and the first device can configure the SL PRS resource reservation period based on this configuration information. That is, the configuration information of the SL data transmission resource pool can include the configuration information of the SL PRS resource reservation period, meaning that the resource reservation period can be configured separately for SL PRS in the SL data transmission resource pool.

[0060] For example, the SL PRS resource reservation period is determined by the configuration information of the SL data transmission resource pool, which contains the configuration information for the SL data transmission resource reservation period. That is, the SL PRS resource reservation period can be determined by the configuration information of the SL data transmission resource pool, meaning that the transmission of SL PRS shares the same resource reservation period as the transmission of SL data, without the need to configure a separate resource reservation period for the transmission of SL PRS.

[0061] In other words, the configuration information of the SL data transmission resource pool of the first device includes the resource reservation period configuration for SL data transmission, and the first device can use the resource reservation period configuration as the resource reservation period configuration of SLPRS.

[0062] In some optional implementations, when the first device is not configured with a resource reservation period, the first device may also determine the SL PRS transmission period as the resource reservation period. That is, the first device can configure the SLPRS resource reservation period according to the SL PRS transmission period configuration.

[0063] In some optional implementations, the resource reservation period is greater than or equal to the latency requirement or remaining latency requirement for SLPRS transmission. That is, the resource reservation period selected by the first device should not be less than the latency requirement or remaining latency requirement for SLPRS transmission by the first device. Of course, the resource reservation period may also have other limitations, which are not specifically limited in this disclosure.

[0064] S202, determine the SL PRS transmission resource group.

[0065] In some implementations, the first device can determine the SLPRS transmission resource group in a variety of ways, thereby reserving resources for multiple subsequent SLPRS transmissions.

[0066] Specifically, the determined SL PRS resource transmission group can meet specific conditions to satisfy the transmission resource requirements. For example, the first device can determine the SL PRS transmission resource group based on the SL PRS resource reservation period for transmitting multiple SL PRS, that is, the first device can determine the SL PRS transmission resource group such that the SL PRS transmission resource group includes multiple SL PRS transmission resources spaced apart by the determined SL PRS resource reservation period.

[0067] In some optional embodiments, the SL PRS transmission resource group includes a plurality of SL PRS transmission resources spaced apart by SL PRS resource reservation periods. For example, when performing SL PRS transmission, the first device may randomly select time-frequency resources for a certain SL PRS transmission opportunity, and select a group of time-frequency resources spaced according to resource reservation periods based on the time-frequency resources for subsequent multiple SL PRS transmissions. Of course, it should be possible for the first device to select time-frequency resources for transmitting SL PRS according to other rules, which is not limited in this disclosure.

[0068] S203, send multiple SL PRS via SL PRS sending resource group.

[0069] In some embodiments of this disclosure, when the first device is in autonomous resource allocation mode, the first device obtains an SL PRS transmission resource group according to the SL PRS resource reservation period. After obtaining the SL PRS transmission resource group, the first device can use the reserved SL PRS transmission resource group to perform periodic transmission of multiple SL PRS. The reserved SL PRS transmission resource group may include at least two or more resources, which may be spaced out according to the resource reservation period. This disclosure does not limit the specific number of resources included in the reserved SL PRS transmission resource group.

[0070] In this embodiment of the disclosure, the first device can determine the SL PRS resource reservation period for sending multiple SL PRS in autonomous resource allocation mode, and correspondingly determine the SL PRS transmission resource group, thereby sending multiple SL PRS through the SL PRS transmission resource group. This is beneficial to enhance the functionality of SL PRS transmission and thus improve the communication performance of SL positioning service.

[0071] Please refer to Figure 3 , Figure 3 This disclosure provides a flowchart illustrating a method for transmitting a side-link (SL) positioning reference signal (PRS) according to an embodiment. The transmission of the SL PRS is performed by a first device. Figure 3 The illustrated embodiment is... Figure 2 A further explanation of step S201 in the embodiment: the method includes, but is not limited to, the following steps:

[0072] S301, Based on the configuration information of the SL PRS resource reservation period, determine the SL PRS resource reservation period group.

[0073] It should be understood that there are multiple methods for determining the SL PRS resource reservation period group. For example, the SL PRS resource reservation period group can be determined based on the configuration information of the SL PRS resource reservation period.

[0074] In the embodiments of this disclosure, the SL PRS resource reservation period can be a different predefined number. For example, an SL PRS resource reservation period can refer to one SL PRS resource reservation period or a group of SL PRS resource reservation periods, i.e., a group of SL PRS resource reservation periods. The SL PRS resource reservation period can be pre-configured by the first device, or it can be obtained by the first device from the network-side device as needed. This disclosure does not limit this.

[0075] In one optional approach, the SL PRS resource reservation period configured by the first device can be a single allowed SL PRS resource reservation period. For example, the first device determines an SL PRS transmission resource group based on a configured SL PRS resource reservation period and transmits multiple SL PRS requests through the SL PRS transmission resource group. In another optional approach, the SL PRS resource reservation period configured by the first device can be a set of allowed SL PRS resource reservation periods. For example, the first device determines an SL PRS transmission resource group based on a configured set of SL PRS resource reservation periods, i.e., a group of SL PRS resource reservation periods including multiple SL PRS resource reservation periods, and transmits multiple SL PRS requests through the SL PRS transmission resource group.

[0076] Optionally, the SL PRS resource reservation period group may contain two SL PRS resource reservation periods or more than two SL PRS resource reservation periods, and this disclosure does not limit this.

[0077] S302, determine the SL PRS resource reservation period for sending multiple SL PRS from the SL PRS resource reservation period group.

[0078] In the embodiments of this disclosure, when the SL PRS resource reservation period configured by the first device is a set of allowed SL PRS resource reservation periods, that is, a group of SL PRS resource reservation periods, the first device can determine the SL PRS resource reservation period for sending multiple SL PRS from the group of SL PRS resource reservation periods.

[0079] For example, the first device may select a certain SL PRS resource reservation period from the SL PRS resource reservation period group as the SL PRS resource reservation period according to a specific rule. The specific rule may be a random rule or other predefined rules, which are not limited in this disclosure.

[0080] In this embodiment of the disclosure, the first device can determine the SL PRS resource reservation period for sending multiple SL PRSs in autonomous resource allocation mode, and determine the SL PRS transmission resource group, thereby sending multiple SL PRSs through the SL PRS transmission resource group, which is beneficial to enhance the functionality of SL PRS transmission and thus improve the communication performance of SL positioning service.

[0081] Please refer to Figure 4 , Figure 4 This is a flowchart illustrating a method for transmitting a side-link (SL) positioning reference signal (PRS) according to an embodiment of this disclosure. The method is executed by a first device. Figure 4The illustrated embodiment further describes a scheme for the first device to perform multiple SL PRS transmissions in autonomous resource allocation mode, the method of which may include, but is not limited to, the following steps:

[0082] S401, if the configuration information for the SL PRS resource reservation period is empty, or if the first device is configured not to send multiple SL PRS, then the sending of multiple SL PRS will be abandoned.

[0083] When the first device determines the SL PRS resource reservation period group based on the configuration information of the SL PRS resource reservation period, the first device can determine the content of the configuration information, thereby determining whether to send multiple SL PRS. In the embodiments of this disclosure, the first device sends multiple SL PRS according to the configuration information of the SL PRS resource reservation period.

[0084] In the embodiments of this disclosure, when the first device determines that the configuration information of the SL PRS resource reservation period is empty, the first device will abandon sending multiple SL PRS.

[0085] In embodiments of this disclosure, the first device can determine whether it is permitted to send multiple SL PRS. When the first device is configured not to send multiple SL PRS, the first device will abandon sending multiple SL PRS.

[0086] For example, the first device can determine whether it is allowed to send multiple SL PRS messages based on the protocol. As another example, the first device can determine whether it is allowed to send multiple SL PRS messages based on its pre-configuration information. Yet another example is that the first device can determine whether it is allowed to send multiple SL PRS messages based on instructions from network devices or other terminal devices.

[0087] That is, when the configuration information for the SL PRS resource reservation period is empty, the first device will not determine the SL PRS transmission resource group based on the SL PRS resource reservation period, and therefore will not transmit multiple SL PRS. When the first device is configured not to transmit multiple SL PRS, the first device will also not determine the SL PRS transmission resource group based on the SL PRS resource reservation period, but will instead abandon transmitting multiple SL PRS.

[0088] In other words, the first device will determine the SL PRS transmission resource group according to the SL PRS resource reservation period only if the configuration information of the first device's SL PRS resource reservation period is not empty, or if the first device is not configured to not allow sending multiple SL PRS.

[0089] In this embodiment of the disclosure, the first device will select whether to send multiple SL PRS according to different configurations, which is beneficial to enhance the functionality of SL PRS transmission and thus improve the communication performance of SL positioning service.

[0090] Please refer to Figure 5 , Figure 5 This is a flowchart illustrating a method for transmitting a side-link (SL) positioning reference signal (PRS) according to an embodiment of this disclosure. The method is executed by a first device. Figure 5 The illustrated embodiment further describes a resource reselection scheme for the first device to transmit multiple SL PRS in an autonomous resource allocation mode. Optionally, resource reselection can be performed before transmitting multiple SL PRS as described in the above embodiment, i.e., determining the time-frequency resources used for transmitting multiple SL PRS; or it can be performed after transmitting multiple SL PRS, i.e., determining the time-frequency resources used for the next transmission of multiple SL PRS. This disclosure does not limit the execution timing of resource reselection. The method may include, but is not limited to, the following steps:

[0091] S501, Determine the value of the SL PRS resource reselection counter.

[0092] In embodiments of this disclosure, when the first device performs multiple SLPRS transmissions, it can determine the value of an SLPRS resource reselection counter and determine whether to perform resource reselection based on the value of the counter.

[0093] In some alternative implementations, the first device may determine the value of the SL PRS resource reselection counter in the following manner:

[0094] 1) Determined based on network device configuration.

[0095] For example, the first device determines the value of the SLPRS resource reselection counter based on the configuration information of the SLPRS resource reselection counter sent by the network device. That is, the first device can configure the value of the SLPRS resource reselection counter based on the configuration information of the SLPRS resource reselection counter sent by the network.

[0096] 2) Determined based on the pre-configuration of the first device.

[0097] For example, the first device determines the value of the SL PRS resource reselection counter based on the pre-configuration information of the first device. That is, the first device can configure the value of the SL PRS resource reselection counter according to the pre-defined configuration information of the first device.

[0098] 3) Randomly select the value of the SL PRS resource reselection counter.

[0099] For example, the first device can randomly select the value of the SL PRS resource reselection counter; that is, the first device can use random selection to configure the value of the SL PRS resource reselection counter.

[0100] S502 determines whether to perform resource reselection based on the value of the SL PRS resource reselection counter.

[0101] In some optional implementations, the first device determines whether to perform resource reselection based on the value of the SL PRS resource reselection counter. That is, if the value of the SL PRS resource reselection counter reaches a certain threshold, the first device will perform resource reselection.

[0102] Optionally, if the value of the SL PRS resource reselection counter is 0, resource reselection is determined. That is, when the value of the SL PRS resource reselection counter is 0, the first device will perform SL PRS resource reselection.

[0103] Optionally, when the value of the SL PRS resource reselection counter is 1, the first device randomly selects a reference value within the range [0,1]. If the reference value is greater than a fourth preset value, when the value of the SL PRS resource reselection counter is 0, resource reselection is determined. The fourth preset value is a parameter specifically used for SL PRS transmission or a parameter shared with SL data transmission.

[0104] For example, when the value of the SLPRS resource reselection counter is 1, the first device randomly selects a value in the range [0,1]. If the value is greater than the fourth preset value X, the first device will clear the selected SLPRS transmission resource and reselect the SLPRS transmission resource when the value of the SLPRS resource reselection counter is 0.

[0105] Optionally, when determining the fourth preset value, the first device may determine the fourth preset value based on the parameter configuration information sent by the network device or the pre-configuration information of the first device.

[0106] In this embodiment of the disclosure, the first device will determine whether to perform resource reselection when sending multiple SL PRS based on the value of the SL PRS resource reselection counter. This is beneficial to enhance the functionality of SL PRS transmission and thus improve the communication performance of SL positioning service.

[0107] Please refer to Figure 6 , Figure 6 This is a flowchart illustrating a method for transmitting a side-link (SL) positioning reference signal (PRS) according to an embodiment of this disclosure. The method is executed by a first device. Figure 6The illustrated embodiment further describes a scheme for the first device to send multiple SL PRS transmissions in autonomous resource allocation mode. In step S501, the value of the SL PRS resource reselection counter is determined. When the first device selects the value of the SL PRS resource reselection counter using a random selection method, the method may include, but is not limited to, the following steps:

[0108] S601, determine the selection range based on the first parameter, the second parameter, and the third parameter.

[0109] Optionally, the first parameter and the second parameter are positive integers greater than or equal to 1 and less than or equal to the first preset value, and the third parameter is the second preset value or a value that changes with the SL PRS resource reservation period.

[0110] Optionally, the first device can determine the third parameter based on the SL PRS resource reservation period. Specifically, when the SL PRS resource reservation period is greater than or equal to the fourth parameter, the third parameter is determined to be a second preset value, where the fourth parameter is a positive integer greater than or equal to 1 and less than or equal to the third preset value; when the SL PRS resource reservation period is less than the fourth parameter, the maximum value between the SL PRS resource reservation period and the fifth parameter is determined, and the ratio between the third parameter and the maximum value is determined as the third parameter, where the fifth parameter is a positive integer greater than or equal to 1 and less than or equal to the fourth parameter.

[0111] In some optional implementations, the first device may determine at least one of the first parameter, second parameter, third parameter, fourth parameter, and fifth parameter based on any one of the parameter configuration information sent by the network device, the pre-configuration information of the first device, or the protocol agreement information. Furthermore, the first parameter, second parameter, third parameter, fourth parameter, and fifth parameter may be parameters specifically used for SL PRS transmission or parameters shared with SL data transmission.

[0112] For example, if the UE chooses randomly, it can randomly select an integer value within the range of [first parameter * third parameter, second parameter * third parameter].

[0113] S602, randomly select the value of the SL PRS resource reselection counter from the selection range.

[0114] For example, the first parameter 'a' and the second parameter 'b', when the first preset value is 10000, can take values ​​ranging from 1 to 10000. The third parameter 'c', when the second preset value is 1, can have a value of 1, or it can be selected based on the size of the resource reservation period. That is, if the resource reservation period is greater than or equal to the fourth preset value X ms, c is 1; otherwise, c is X / max(the fifth parameter value d, the resource reservation period). In other words, the maximum value between d and the resource reservation period is determined, and c is the ratio of X to that maximum value. Here, X can be less than the third preset value of 1000000, and the fifth parameter d can be a positive integer from 1 to X. For example, if a is 100, b is 500, and c is 1, then the UE can randomly select a value within the range [100, 500] as the value of the resource reselection counter. For example, if a is 100, b is 500, X is 100ms, the resource reservation period is 50ms, and d is 20, then c takes the value 100 / max(50, 20) = 2. The UE can randomly select a value within the range of [200, 1000] as the value of the resource reselection counter.

[0115] In this embodiment of the disclosure, the first device will randomly select the value of the SL PRS resource reselection counter to determine whether resource reselection is required when sending multiple SL PRS messages. This is beneficial to enhancing the functionality of SL PRS transmission and thereby improving the communication performance of SL positioning services.

[0116] In the embodiments provided above, the methods provided by the present disclosure are described using a first device. To implement the functions of the methods provided in the embodiments of the present disclosure, the first device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions may be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0117] Please see Figure 7 This is a schematic diagram of the structure of a side-link SL positioning reference signal (PRS) transmitting device 70 provided in an embodiment of this disclosure. Figure 7 The side-link SL positioning reference signal PRS transmitting device 70 shown is executed by the first device and may include:

[0118] The first determining module 701 is used to determine the SLPRS resource reservation period for sending multiple SL PRS in the autonomous resource allocation mode.

[0119] The second determining module 702 is used to determine the SL PRS transmission resource group, wherein the SL PRS transmission resource group includes multiple SL PRS transmission resources with an SL PRS resource reservation period interval;

[0120] The sending module 703 is used to send multiple SL PRS via SL PRS sending resource groups.

[0121] Optionally, when determining the SL PRS resource reservation period for sending multiple SL PRS, the first determining module 701 is further configured to determine the SL PRS resource reservation period based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device, wherein the configuration information of the dedicated SL-PRS transmission resource pool carries the configuration information of the SL PRS resource reservation period; determine the SL PRS resource reservation period based on the configuration information of the SL data transmission resource pool of the first device, wherein the configuration information of the SL data transmission resource pool carries the configuration information of the SL PRS resource reservation period; or the SL PRS resource reservation period is determined by the configuration information of the SL data transmission resource reservation period for SL data transmission carried in the configuration information of the SL data transmission resource pool; and use the SL PRS transmission period as the resource reservation period.

[0122] Optionally, when determining the SL PRS resource reservation period for sending multiple SL PRS, the first determining module 701 is further configured to determine an SL PRS resource reservation period group based on the configuration information of the SL PRS resource reservation period, wherein the SL PRS resource reservation period group includes multiple SL PRS resource reservation periods; and determine the SL PRS resource reservation period for sending multiple SL PRS from the SL PRS resource reservation period group.

[0123] Optionally, if the configuration information for the SL PRS resource reservation period is empty, or if the first device is configured not to send multiple SL PRS, then sending multiple SL PRS may be abandoned.

[0124] Optionally, the resource reservation period is greater than or equal to the latency requirement or remaining latency requirement of SL PRS transmission.

[0125] Optionally, the second determining module 702 is further configured to determine the value of the SL PRS resource reselection counter; and based on the value of the SL PRS resource reselection counter, determine whether to perform resource reselection.

[0126] Optionally, when determining the value of the SL PRS resource reselection counter, the second determining module 702 is further configured to determine the value of the SL PRS resource reselection counter based on the configuration information of the SL PRS resource reselection counter sent by the network device; determine the value of the SL PRS resource reselection counter based on the pre-configuration information of the first device; and randomly select the value of the SL PRS resource reselection counter.

[0127] Optionally, when randomly selecting the value of the SL PRS resource reselection counter, the second determining module 702 is further configured to determine the selection range based on the first parameter, the second parameter, and the third parameter, wherein the first parameter and the second parameter are positive integers greater than or equal to 1 and less than or equal to the first preset value, and the third parameter is the second preset value or a value that changes with the SL PRS resource reservation period; and randomly select the value of the SL PRS resource reselection counter from the selection range.

[0128] Optionally, the second determining module 702 is also used to determine the third parameter based on the SL PRS resource reservation period.

[0129] Optionally, when determining the third parameter based on the SL PRS resource reservation period, the second determining module 702 is further configured to: when the SL PRS resource reservation period is greater than or equal to the fourth parameter, determine the third parameter as a second preset value, wherein the fourth parameter is a positive integer greater than or equal to 1 and less than or equal to the third preset value; when the SL PRS resource reservation period is less than the fourth parameter, determine the maximum value between the SL PRS resource reservation period and the fifth parameter, and determine the ratio between the third parameter and the maximum value as the third parameter, wherein the fifth parameter is a positive integer greater than or equal to 1 and less than or equal to the fourth parameter.

[0130] Optionally, the second determining module 702 is further configured to determine at least one of the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter based on any one of the parameter configuration information sent by the network device, the pre-configuration information of the first device, and the protocol agreement information.

[0131] Optionally, the first, second, third, fourth, and fifth parameters are parameters specifically used for SL PRS transmission or parameters shared with SL data transmission.

[0132] Optionally, when determining whether to perform resource reselection based on the value of the SL PRS resource reselection counter, the second determining module 702 is further configured to determine whether to perform resource reselection if the value of the SL PRS resource reselection counter is 0.

[0133] Optionally, when determining to perform resource reselection when the value of the SL PRS resource reselection counter is 0, the second determining module 702 is further configured to randomly select a reference value in the range [0,1] when the value of the SL PRS resource reselection counter is 1; and when the reference value is greater than the fourth preset value, determine to perform resource reselection when the value of the SL PRS resource reselection counter is 0.

[0134] Optionally, the second determining module 702 is further configured to determine a fourth preset value based on the parameter configuration information sent by the network device or the pre-configuration information of the first device.

[0135] Optionally, the fourth preset value is a parameter dedicated to SL PRS transmission or a parameter shared with SL data transmission.

[0136] Please see Figure 8 , Figure 8 This is a schematic diagram of another communication device 80 provided in an embodiment of this disclosure. The communication device 80 can be a network device, a terminal device, a chip, chip system, or processor that supports the implementation of the above methods in a network device, or a chip, chip system, or processor that supports the implementation of the above methods in a terminal device. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0137] The communication device 80 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0138] Optionally, the communication device 80 may further include one or more memories 802, on which a computer program 803 may be stored. The processor 801 executes the computer program 803 to cause the communication device 80 to perform the methods described in the above method embodiments. Optionally, the memory 802 may also store data. The communication device 80 and the memory 802 may be provided separately or integrated together.

[0139] Optionally, the communication device 80 may also include a transceiver 804 and an antenna 805. The transceiver 804 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 804 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0140] Optionally, the communication device 80 may further include one or more interface circuits 806. The interface circuits 806 are used to receive code instructions and transmit them to the processor 801. The processor 801 executes the code instructions to cause the communication device 80 to perform the methods described in the above method embodiments.

[0141] The communication device 80 is a terminal device used to implement the functions of the terminal device in the aforementioned embodiments.

[0142] The communication device 80 is a network device used to implement the functions of the network device in the aforementioned embodiments.

[0143] In one implementation, the processor 801 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0144] In one implementation, processor 801 may store computer program 803, which runs on processor 801 and causes communication device 80 to perform the methods described in the above method embodiments. Computer program 803 may be embedded in processor 801; in this case, processor 801 may be implemented in hardware.

[0145] In one implementation, the communication device 80 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0146] The communication device described in the above embodiments may be a network device or a network device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 8 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0147] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0148] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0149] (3) ASIC, such as modem;

[0150] (4) Modules that can be embedded in other devices;

[0151] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0152] (6) Others, etc.

[0153] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 9 The diagram shows the structure of the chip. Figure 9 The chip shown includes a processor 901 and an interface 902. There can be one or more processors 901, and multiple interfaces 902.

[0154] Regarding the case where the chip is used to implement the function of the first device in the embodiments of this disclosure:

[0155] Processor 901 is used to determine the priority information of SL PRS transmission;

[0156] Interface 902 is used to perform the SL PRS transmission with the second device according to the priority information of the SL PRS transmission.

[0157] Optionally, the processor 901 is further configured to determine the priority of the SL PRS transmission based on the priority information of the SL PRS transmission; and to perform the SL PRS transmission with the second device based on the priority of the SL PRS transmission.

[0158] Optionally, interface 902 is further configured to: determine the priority of the UL transmission when there is a transmission conflict between the SL PRS transmission and the uplink UL transmission of the first device; determine a first priority relationship between the SL PRS transmission and the UL transmission based on the priority of the SL PRS transmission and the priority of the UL transmission; and perform the SL PRS transmission with the second device based on the first priority relationship.

[0159] Optionally, if the SL PRS transmission and the UL transmission cannot be performed simultaneously, interface 902 is further configured to perform the SL PRS transmission with the second device if the priority of the SL PRS transmission is higher than the priority of the UL transmission; or, if the priority of the SL PRS transmission is lower than the priority of the UL transmission, perform the UL transmission with two other devices.

[0160] Optionally, if the SL PRS transmission and the UL transmission can be performed simultaneously but overlap in time, interface 902 is also used to perform the SL PRS transmission with the second device if the priority of the SL PRS transmission is higher than the priority of the UL transmission; or, if the priority of the SL PRS transmission is lower than the priority of the UL transmission, perform the UL transmission with two other devices.

[0161] Optionally, if the total transmit power of the first device required during the overlap of the SL PRS transmission and the UL transmission is greater than a power threshold, interface 902 is further configured to maintain the transmit power of the SL PRS transmission and reduce the transmit power of the UL transmission, thereby limiting the total transmit power to be less than or equal to the power threshold, since the priority of the SL PRS transmission is higher than the priority of the UL transmission; or, if the priority of the SL PRS transmission is lower than the priority of the UL transmission, then maintain the transmit power of the UL transmission and reduce the transmit power of the SL PRS transmission, thereby limiting the total transmit power to be less than or equal to the power threshold.

[0162] Optionally, the first device performs a first transmission in a first network and / or a second transmission in a second network, wherein at least one of the first transmission and the second transmission is the SL PRS transmission. Then, interface 902 is further configured to determine a second priority relationship between the first transmission and the second transmission based on the priority of the SL PRS transmission; and to determine the transmission with higher priority corresponding to the first transmission and the second transmission based on the second priority relationship, and to perform the transmission with higher priority.

[0163] Optionally, the processor 901 is further configured to determine the start times of the first transmission and the second transmission, and to determine the earliest start time therefrom;

[0164] Optionally, interface 902 is also configured to, if the priorities of the first transmission and the second transmission are determined before the earliest start time, select the transmission with higher priority from the first transmission and the second transmission for transmission based on the determined priorities of the first transmission and the second transmission.

[0165] Optionally, UL transmission includes one of the following uplink transmission configurations: transmission of the Physical Random Access Channel (PRACH); transmission and retransmission of the Physical Uplink Shared Channel (PUSCH) for uplink grant scheduling in the Random Access Response (RAR); transmission and retransmission of the PUSCH corresponding to Type-2 random access; Physical Uplink Control Channel (PUCCH) carrying a Hybrid Automatic Repeat Request Response (HARQ-ACK) for RAR or SL; and PUCCH carrying Downlink Control Information (DCI) scrambled by the Temporary Radio Network Identifier (TC-RNTI) of the Temporary Cell.

[0166] Optionally, the UL transmission also includes other UL transmissions besides the set uplink transmission type. The processor 901 is further configured to determine a third priority relationship between the SL PRS transmission and the other UL transmissions based on a priority threshold.

[0167] Optionally, the processor 901 is further configured to determine that the transmission priority of the SL PRS is higher than that of the other UL transmissions when the priority value is negatively correlated with the priority level; or, if the transmission priority of the SL PRS is higher than the priority threshold, determine that the transmission priority of the SL PRS is lower than that of the other UL transmissions.

[0168] If the priority value is positively correlated with the priority level, and the transmission priority of the SL PRS is higher than the priority threshold, then the transmission priority of the SL PRS is determined to be higher than that of the other ULs; or, if the transmission priority of the SL PRS is lower than the priority threshold, then the transmission priority of the SL PRS is determined to be lower than that of the other ULs.

[0169] Optionally, other UL transmissions are PUSCH or PUCCH corresponding to non-priority specified indexes; or, other UL transmissions are PUSCH or PUCCH corresponding to the priority specified index, wherein the priority threshold is the SL priority threshold of the uplink ultra-reliable low-latency communication UL-URLLC service.

[0170] Optionally, interface 902 is further configured to receive priority information of the SL PRS transmission sent by a third device, wherein the third device is at least one of the second device, a positioning assistance device, or a network device; or,

[0171] Optionally, the processor 901 is further configured to determine the priority information of the SL PRS transmission based on the Quality of Service (QoS) information of the SL positioning service corresponding to the SL PRS transmission.

[0172] Optionally, interface 902 is further configured to receive priority information transmitted by SL PRS and priority information received by SL PRS from the third device, respectively; or,

[0173] Optionally, the processor 901 is further configured to determine the priority information transmitted by the SL PRS and the priority information received by the SL PRS based on the QoS information.

[0174] Optionally, the priority information transmitted by SL PRS includes at least one of the following: the priority value and / or range of the SL PRS transmission; the identification information ID of SL PRS or the set ID of SL PRS; the QoS information of the SL positioning service corresponding to SL PRS; the priority information of each SL PRS ID or the priority information of each SL PRS set ID; the priority information transmitted by SL PRS and / or the priority information received by SL PRS.

[0175] Optionally, the SL PRS transmission includes SL PRS sending and SL PRS receiving, and the processor 901 is further configured to determine at least one of the priorities of the SL PRS sending and the SL PRS receiving.

[0176] Optionally, if the third device is the second device, interface 902 is also used to perform signaling interaction with the second device through one of SL LPP messages, SL interface PC5-S messages, RRC messages and SCI, wherein the signaling interaction includes at least the transmission of priority information of the SL PRS transmission.

[0177] Optionally, if the third device is a positioning assist device, interface 902 is further configured to perform signaling interaction with the positioning assist device via LPP messages, wherein the signaling interaction includes at least the transmission of priority information of the SL PRS transmission.

[0178] Optionally, if the third device is a network device, interface 902 is further configured to perform signaling interaction with the network device via one of a system broadcast message, an RRC reconfiguration message, an RRC release message, a downlink control information (DCI) message, and a media access control-control unit (MAC CE) message, wherein the signaling interaction includes at least the transmission of priority information for the SL PRS transmission.

[0179] Optionally, the chip also includes a memory 903, which is used to store necessary computer programs and data.

[0180] In this embodiment, priority information is set for SL PRS transmission, and SL PRS transmission is performed based on this priority information, making SL PRS transmission more accurate and improving its rationality. Furthermore, when there is a transmission conflict between SL PRS transmission and UL transmission, the conflict can be resolved based on the priority relationship between the two transmissions, thus reducing the risk of conflict between SL PRS and UL transmissions. Moreover, it ensures that the higher-priority SL PRS or UL transmission is transmitted, which can reduce packet loss.

[0181] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0182] This disclosure also provides a communication system, which includes the aforementioned... Figure 8 In the embodiments, the communication device serves as a terminal device and the communication device serves as a network device; alternatively, the system includes the aforementioned components. Figure 9 The embodiments include a communication device as a terminal device and a communication device as a network device.

[0183] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0184] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0185] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0186] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0187] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0188] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0189] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0190] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0191] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0192] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for transmitting a side-link positioning reference signal (SL PRS), characterized in that, Performed by a first device, the method includes: In the autonomous resource allocation mode, the SL PRS resource reservation period for sending multiple SL PRS is determined based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device or the configuration information of the SL data transmission resource pool of the first device. Determine an SL PRS transmission resource group, wherein the SL PRS transmission resource group includes a plurality of SL PRS transmission resources spaced apart by the SL PRS resource reservation period; The multiple SL PRSs are sent through the SL PRS sending resource group.

2. The method according to claim 1, characterized in that, The step of determining the SL PRS resource reservation period for sending multiple SLPRS based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device or the configuration information of the SL data transmission resource pool of the first device includes any one of the following: The SL PRS resource reservation period is determined based on the configuration information of the dedicated SL PRS transmission resource pool of the first device, wherein the configuration information of the dedicated SL PRS transmission resource pool carries the configuration information of the SL PRS resource reservation period. Based on the configuration information of the SL data transmission resource pool of the first device, the SL PRS resource reservation period is determined, wherein the configuration information of the SL data transmission resource pool carries the configuration information of the SL PRS resource reservation period, or The SL PRS resource reservation period is determined by the configuration information of the SL data resource reservation period for SL data transmission carried in the configuration information of the SL data transmission resource pool. The transmission period of SL PRS is determined as the resource reservation period.

3. The method according to claim 1 or 2, characterized in that, The step of determining the SL PRS resource reservation period for sending multiple SL PRSs based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device or the configuration information of the SL data transmission resource pool of the first device includes: Based on the configuration information of the SL PRS resource reservation period, an SL PRS resource reservation period group is determined, wherein the SL PRS resource reservation period group includes multiple SL PRS resource reservation periods; The SL PRS resource reservation period for sending multiple SL PRSs is determined from the SL PRS resource reservation period group.

4. The method according to claim 1, characterized in that, The method further includes: If the configuration information for the SL PRS resource reservation period is empty, or if the first device is configured not to send multiple SL PRS, then the sending of the multiple SL PRS will be abandoned.

5. The method according to any one of claims 1 to 2, characterized in that, The resource reservation period is greater than or equal to the latency requirement or remaining latency requirement of SL PRS transmission.

6. The method according to any one of claims 1 to 2, characterized in that, The method further includes: Determine the value of the SL PRS resource reselection counter; Based on the value of the SL PRS resource reselection counter, it is determined whether to perform resource reselection.

7. The method according to claim 6, characterized in that, The value of the SL PRS resource reselection counter is determined by any of the following: The value of the SL PRS resource reselection counter is determined based on the configuration information of the SL PRS resource reselection counter sent by the network device; The value of the SL PRS resource reselection counter is determined based on the pre-configuration information of the first device; Randomly select the value of the SL PRS resource reselection counter.

8. The method according to claim 7, characterized in that, The value of the randomly selected SL PRS resource reselection counter includes: Based on the first parameter, the second parameter, and the third parameter, a selection range is determined, wherein the first parameter and the second parameter are positive integers greater than or equal to 1 and less than or equal to a first preset value, and the third parameter is a second preset value or a value that changes with the SL PRS resource reservation period; The value of the SL PRS resource reselection counter is randomly selected from the selection range.

9. The method according to claim 8, characterized in that, The method further includes: The third parameter is determined based on the SL PRS resource reservation period.

10. The method according to claim 9, characterized in that, The determination of the third parameter based on the SL PRS resource reservation period includes: When the SL PRS resource reservation period is greater than or equal to the fourth parameter, the third parameter is determined to be the second preset value, wherein the fourth parameter is a positive integer greater than or equal to 1 and less than or equal to the third preset value; When the SL PRS resource reservation period is less than the fourth parameter, the maximum value between the SL PRS resource reservation period and the fifth parameter is determined, and the ratio between the fourth parameter and the maximum value is determined as the third parameter, wherein the fifth parameter is a positive integer greater than or equal to 1 and less than or equal to the fourth parameter.

11. The method according to claim 10, characterized in that, The method further includes: Based on any one of the parameter configuration information sent by the network device, the pre-configuration information of the first device, and the protocol agreement information, determine at least one of the first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter.

12. The method according to claim 10, characterized in that, The first parameter, the second parameter, the third parameter, the fourth parameter, and the fifth parameter are parameters specifically used for SL PRS transmission or parameters shared with SL data transmission.

13. The method according to claim 6, characterized in that, Determining whether to perform resource reselection based on the value of the SL PRS resource reselection counter includes: If the value of the SL PRS resource reselection counter is 0, a resource reselection is determined.

14. The method according to claim 13, characterized in that, When the value of the SL PRS resource reselection counter is 0, determining to perform resource reselection includes: When the value of the SL PRS resource reselection counter is 1, a reference value is randomly selected within the range of [0,1]. If the reference value is greater than the fourth preset value, and the value of the SL PRS resource reselection counter is 0, it is determined that resource reselection will be performed.

15. The method according to claim 14, characterized in that, The method further includes: The fourth preset value is determined based on the parameter configuration information sent by the network device or the pre-configuration information of the first device.

16. The method according to claim 14, characterized in that, The fourth preset value is a parameter specifically used for SL PRS transmission or a parameter shared with SL data transmission.

17. A means for transmitting a side-link positioning reference signal (SL PRS), characterized in that, Performed by a first device, the apparatus includes: The first determining module is used to determine the SL PRS resource reservation period for sending multiple SLPRSs in autonomous resource allocation mode, based on the configuration information of the dedicated SL-PRS transmission resource pool of the first device or the configuration information of the SL data transmission resource pool of the first device. The second determining module is used to determine the SL PRS transmission resource group, wherein the SL PRS transmission resource group includes a plurality of SL PRS transmission resources spaced apart by the SL PRS resource reservation period; A sending module is used to send the plurality of SL PRSs through the SL PRS sending resource group.

18. A communication device, wherein, include: transceiver; Memory; A processor, connected to both the transceiver and the memory, is configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, thereby enabling the communication device to implement the method of any one of claims 1-16.

19. A computer-readable storage medium storing instructions that, when executed, cause the method of any one of claims 1-16 to be implemented.

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