Positioning reference signal sending method, terminal, and storage medium

Abstract

The present disclosure relates to a positioning reference signal sending method, a device, and a storage medium. The method comprises: determining that a first terminal is triggered to transmit a sidelink positioning reference signal (SL PRS), determining to allocate resources from a target resource pool to the first terminal, and acquiring sidelink grant resources from the target resource pool, wherein the target resource pool comprises a shared resource pool and / or a dedicated resource pool; and sending the SL PRS to a second terminal on the basis of the sidelink grant resources. Therefore, an SL PRS can be reliably and effectively sent by means of sidelink grant resources on a target resource pool.

Description

Method, terminal and storage medium for transmitting positioning reference signal Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for sending a positioning reference signal. Background Art

[0002] With the advancement of wireless communication technology, mobile communication networks are gradually evolving towards 5G NR (New Radio) systems. 5G NR systems introduce sidelinks (SLs), enabling communication between terminal devices. For example, SL positioning is performed by transmitting a Sidelink Positioning Reference Signal (SL PRS).

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a method, a terminal, and a storage medium for transmitting a positioning reference signal, which can more reliably transmit a sidelink positioning reference signal.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for sending a positioning reference signal is proposed, the method including:

[0006] Determining that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and determining to allocate resources to the first terminal from a target resource pool, and obtaining a sidelink granted resource on the target resource pool, where the target resource pool includes a shared resource pool and / or a dedicated resource pool;

[0007] The SL PRS is sent to the second terminal according to the sidelink granted resources.

[0008] According to a second aspect of an embodiment of the present disclosure, a method for sending a positioning reference signal is proposed, the method including:

[0009] Receive the SL PRS sent by the first terminal, where the SL PRS is sent according to the sidelink authorized resources on the target resource pool when determining that the first terminal is triggered to transmit the sidelink positioning reference signal SL PRS and determining to allocate resources to the first terminal from the target resource pool.

[0010] According to a third aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0011] a processing module configured to determine that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, determine to allocate resources to the first terminal from a target resource pool, and obtain a sidelink granted resource on the target resource pool, where the target resource pool includes a shared resource pool and / or a dedicated resource pool;

[0012] The transceiver module is configured to send the SL PRS to the second terminal according to the sidelink granted resources.

[0013] According to a fourth aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0014] The transceiver module is configured to receive the SL PRS sent by the first terminal. The SL PRS is determined to be triggered for the transmission of the side link positioning reference signal SL PRS by the first terminal, and when it is determined that resources are allocated to the first terminal from the target resource pool, it is sent according to the side link authorized resources on the target resource pool. The target resource pool includes a shared resource pool and / or a dedicated resource pool.

[0015] According to a fifth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the communication device can be used to execute an optional implementation of the first aspect or the second aspect.

[0016] According to a sixth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0018] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0019] FIG2 is a schematic diagram illustrating an example of a method for sending a positioning reference signal according to an embodiment of the present disclosure.

[0020] FIG3 is a schematic diagram of an exemplary interaction of a method for sending a positioning reference signal according to an embodiment of the present disclosure.

[0021] FIG4A is an exemplary flowchart of a positioning reference signal method according to an embodiment of the present disclosure.

[0022] FIG4B is an exemplary flowchart of a positioning reference signal method according to an embodiment of the present disclosure.

[0023] FIG5 is an exemplary flowchart of a positioning reference signal method provided according to an embodiment of the present disclosure.

[0024] FIG6A is an exemplary schematic diagram of the structure of a first terminal provided according to an embodiment of the present disclosure.

[0025] FIG6B is an exemplary schematic diagram of the structure of a second terminal provided according to an embodiment of the present disclosure.

[0026] FIG7A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0027] FIG7B is an exemplary schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure provide a method for sending a positioning reference signal, a terminal, and a storage medium.

[0029] In a first aspect, an embodiment of the present disclosure provides a method for sending a positioning reference signal, the method comprising:

[0030] Determining that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and determining to allocate resources to the first terminal from a target resource pool, and obtaining a sidelink granted resource on the target resource pool, where the target resource pool includes a shared resource pool and / or a dedicated resource pool;

[0031] The SL PRS is sent to the second terminal according to the sidelink granted resources.

[0032] In the above embodiment, when determining that the SL PRS is triggered, the first terminal may send the SL PRS to the second terminal according to the sidelink granted resources in the target resource pool, so that the transmission of the SL PRS can be achieved more reliably.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, obtaining the sidelink granted resources on the target resource pool includes:

[0034] Determine that the resource allocation mode adopted by the first terminal is the autonomous resource allocation mode, and determine that the first terminal is configured with a first resource pool, obtain the side link authorization resources on the first resource pool, and the first resource pool is a dedicated resource pool in the target resource pool for transmitting the SL PRS.

[0035] In the above embodiment, in the autonomous resource allocation mode, the first terminal determines that it is configured with a dedicated resource pool for transmitting the SL PRS, and transmits the SL PRS according to the dedicated resource pool to improve the effectiveness of SL PRS transmission.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0037] Determine that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and determine that the first terminal is not configured with the first resource pool, obtain the side link authorization resources on the second resource pool, and the second resource pool is other public resource pools and / or other dedicated resource pools in the target resource pool other than the first resource pool.

[0038] In the above embodiment, in the autonomous resource allocation mode, the first terminal determines that no dedicated resource pool is configured for transmitting SL PRS, and sends SL PRS according to other public resource pools and / or dedicated resource pools, thereby ensuring the flexibility of SL PRS transmission.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, obtaining the sidelink granted resources on the target resource pool further includes:

[0040] Obtaining a resource reservation interval for the SL PRS;

[0041] The sidelink granted resources are generated according to the resource reservation interval.

[0042] In the above embodiment, when the SL PRS is triggered, the first terminal can avoid resource collision by considering the resource reservation interval of the SL PRS.

[0043] In combination with some embodiments of the first aspect, in some embodiments, it is determined that the first terminal is triggered to transmit SL PRS, and it is determined that there is no SL data transmission, and the number of hybrid automatic repeat request HARQ retransmissions is set to zero.

[0044] In the above embodiment, when it is determined that there is no SL data transmission, unnecessary retransmission operations can be avoided by setting the number of HARQ retransmissions to zero.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the sidelink granted resource includes a time-frequency resource, and the sending the SL PRS to the second terminal according to the sidelink granted resource includes:

[0046] Determine that the time-frequency resource meets a first preset condition, and send the SL PRS to the second terminal according to the sidelink authorized resource.

[0047] In the above embodiment, the accuracy of SL PRS transmission can be ensured by sending the SL PRS based on the time-frequency resources that meet the first preset condition.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the first preset condition includes at least one of the following:

[0049] The time-frequency resources meet the requirements of the remaining data packet delay budget PDB of the logical channel data;

[0050] The time-frequency resources meet the requirement of the remaining delay budget of the SL PRS.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0052] It is determined that the sidelink granted resource does not meet the first preset condition, and the first terminal determines not to send the SL PRS based on the sidelink granted resource, clears the sidelink granted resource, and re-executes the sending resource selection operation.

[0053] In the above embodiment, when the sidelink granted resource does not meet the first preset condition and the first terminal determines not to send the SL PRS based on the sidelink granted resource, the reliability of the SL PRS transmission can be ensured by clearing the sidelink granted resource and re-performing the transmission resource selection operation. In combination with the remaining delay budget of the SL PRS, the remaining delay budget of the SL PRS, and the first terminal itself, the present disclosure can obtain reliable transmission resources.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0055] The physical sidelink shared channel PSSCH duration and the physical sidelink control channel PSCCH duration are determined according to the sidelink granted resources, and the PSSCH duration includes the PSSCH used for transmitting data information and the SL PRS.

[0056] In the above embodiment, the first terminal can accurately obtain the PSSCH duration and the PSCCH duration according to the sidelink granted resources.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0058] Determine that the PSSCH duration and the PSCCH duration do not meet a second preset condition, clear the sidelink granted resources, and re-execute the transmission resource selection operation.

[0059] In the above embodiment, when it is determined that the PSSCH duration and the PSCCH duration do not meet the second preset condition, the reliability of the resource selection can be ensured by re-selecting the transmission resources.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the second preset condition includes at least one of the following:

[0061] The PSSCH duration falls within the discontinuous reception activation period;

[0062] The PSCCH duration falls within the discontinuous reception activation period.

[0063] In the above embodiment, the first terminal determines whether the PSSCH duration and / or PSCCH duration falls within the DRX activation period based on the PSSCH duration and the PSCCH duration, so as to ensure the reliability of transmission resources.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0065] The PSSCH duration, PSCCH duration and SL PRS duration are determined according to the sidelink granted resources, and the PSSCH duration does not include the SL PRS.

[0066] In the above embodiment, the first terminal can accurately obtain the PSSCH duration, PSCCH duration and SL PRS duration according to the sidelink granted resources.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0068] Determine that the PSSCH duration, the PSCCH duration, and the SL PRS duration do not meet a second preset condition, clear the sidelink authorized resources, and re-execute the transmission resource selection operation.

[0069] In the above embodiment, when it is determined that the PSSCH duration, the PSCCH duration, and the SL PRS duration do not meet the second preset condition, the reliability of the resource selection can be ensured by re-selecting the transmission resources.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the second preset condition includes at least one of the following:

[0071] The PSSCH duration falls within the discontinuous reception activation period;

[0072] The PSCCH duration falls within the discontinuous reception activation period;

[0073] The SL PRS duration falls within the discontinuous reception activation period.

[0074] In the above embodiment, the first terminal determines whether the PSSCH duration, PSCCH duration and SL PRS duration fall within the DRX activation period based on the PSSCH duration, PSCCH duration and SL PRS duration to further ensure the reliability of transmission resources.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, sending the SL PRS to the second terminal according to the sidelink granted resources includes:

[0076] Obtaining an interval between an end symbol of the PSSCH and a start symbol of the physical side feedback channel PSFCH according to the PSSCH duration;

[0077] Determine that the interval meets a third preset condition, and send the SL PRS to the second terminal according to the sidelink granted resources.

[0078] In the above embodiment, the first terminal obtains the interval between the end symbol of the PSSCH and the start symbol of the PSFCH, and when the interval meets the third preset condition, uses the selected resources to send the SL PRS to ensure the reliability of the SL PRS transmission.

[0079] In combination with some embodiments of the first aspect, in some embodiments, the third preset condition includes that the interval between the end symbol of the PSSCH and the start symbol of the PSFCH exceeds a preset interval.

[0080] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0081] A media access control packet data unit MAC PDU is obtained based on the sidelink authorized resources, and resource information of the SL PRS is determined based on the sidelink authorized resources.

[0082] In the above embodiment, the transmission of SL PRS can be enriched by acquiring the resource information of MAC PDU and SL PRS.

[0083] In conjunction with some embodiments of the first aspect, in some embodiments, the first terminal includes a SL HARQ entity, and determining the resource information of the SL PRS based on the sidelink granted resources includes:

[0084] The first terminal calls a multiplexing and aggregation entity based on the SL HARQ entity to determine resource information of the SL PRS.

[0085] In the above embodiment, the flexibility of resource information acquisition can be ensured by calling the multiplexing and aggregation entities to determine the resource information of the SL PRS.

[0086] In combination with some embodiments of the first aspect, in some embodiments, the resource information of the SL PRS includes at least one of a resource identifier and priority information of the SL PRS.

[0087] In the above embodiment, the resource information of the SL PRS may include the resource identifier and priority information of the SL PRS to improve the accuracy of SL PRS transmission.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0089] The highest priority is selected from the logical channel priority, the media access control element MAC CE priority and the SL PRS priority, and the priority value corresponding to the highest priority is used as the priority information.

[0090] In the above embodiment, the reliability of SL PRS transmission can be guaranteed by selecting the optimal priority and using the optimal priority to transmit the signal.

[0091] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0092] The SL HARQ process of the first terminal determines that the priority value of the highest priority is lower than the priority threshold, and sends the SL MAC PDU to the second terminal.

[0093] In the above embodiment, the flexibility of signal transmission can be ensured by sending the SL MAC PDU when it is determined that the highest priority is lower than the priority threshold.

[0094] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0095] The SL HARQ process of the first terminal determines that the priority value of the highest priority is higher than the priority threshold, and sends an uplink UL MAC PDU to the second terminal.

[0096] In the above embodiment, the flexibility of signal transmission can be further guaranteed by sending an uplink UL MAC PDU when it is determined that the highest priority is higher than the priority threshold.

[0097] In combination with some embodiments of the first aspect, in some embodiments, the SL HARQ process of the first terminal instructs the physical layer to transmit the SL PRS based on sidelink control information SCI.

[0098] In the above embodiment, the SL HARQ process of the first terminal can flexibly transmit the SL PRS through the SCI.

[0099] In combination with some embodiments of the first aspect, in some embodiments, the target resource pool is selected from the shared resource pool or the dedicated resource pool according to a resource pool selection requirement.

[0100] In the above embodiment, the first terminal can flexibly select a target resource pool that meets the conditions according to the resource selection requirement.

[0101] In conjunction with some embodiments of the first aspect, in some embodiments, the resource pool selection requirement includes at least one of the following:

[0102] Bandwidth requirements for SL-PRS;

[0103] Comb size requirements;

[0104] SL-PRS duration requirements.

[0105] In the above embodiment, a more accurate target resource pool can be obtained through different resource selection requirements.

[0106] In conjunction with some embodiments of the first aspect, in some embodiments, the resource pool selection requirement is obtained according to at least one of the following methods:

[0107] Provided by the SLPP layer;

[0108] Determined by the MAC layer.

[0109] In the above embodiments, the resource pool selection requirement can be flexibly obtained through different methods.

[0110] In a second aspect, an embodiment of the present disclosure provides a method for sending a positioning reference signal, the method comprising:

[0111] Receive the SL PRS sent by the first terminal, where the SL PRS is determined to be triggered for transmission of the sidelink positioning reference signal SL PRS by the first terminal, and when it is determined that resources are allocated to the first terminal from the target resource pool, it is sent according to the sidelink authorized resources on the target resource pool, and the target resource pool includes a shared resource pool and / or a dedicated resource pool.

[0112] In the above embodiment, the second terminal can receive the SL PRS sent by the first terminal. Since the SL PRS is triggered by the first terminal and is sent to the second terminal when it determines to allocate resources from the target resource pool, the second terminal can receive a reliable SL PRS.

[0113] In a third aspect, an embodiment of the present disclosure provides a terminal device, including:

[0114] a processing module configured to determine that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, determine to allocate resources to the first terminal from a target resource pool, and obtain a sidelink granted resource on the target resource pool, where the target resource pool includes a shared resource pool and / or a dedicated resource pool;

[0115] The transceiver module is configured to send the SL PRS to the second terminal according to the sidelink granted resources.

[0116] In a fourth aspect, an embodiment of the present disclosure provides a terminal device, including:

[0117] The receiving module is configured to receive the SL PRS sent by the first terminal, and the SL PRS is determined to be triggered for the transmission of the side link positioning reference signal SL PRS by the first terminal, and is sent according to the side link authorized resources on the target resource pool when it is determined that resources are allocated to the first terminal from the target resource pool. The target resource pool includes a shared resource pool and / or a dedicated resource pool.

[0118] In a fifth aspect, an embodiment of the present disclosure proposes a communication device, which may include: one or more processors; wherein the communication device can be used to execute an optional implementation of the first aspect or the second aspect.

[0119] In the sixth aspect, an embodiment of the present disclosure proposes a communication system, which may include: a first terminal device and a second terminal device; wherein, the first terminal device is configured to execute the method described in the optional implementation manner of the first aspect, and the second terminal device is configured to execute the method described in the optional implementation manner of the second aspect.

[0120] In a seventh aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the method described in the optional implementation manner of the first aspect or the second aspect.

[0121] In an eighth aspect, an embodiment of the present disclosure proposes a program product, which, when executed by a communication device, enables the communication device to execute the method described in the optional implementation manner of the first aspect or the second aspect.

[0122] In a ninth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first or second aspect.

[0123] In a tenth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first aspect or the second aspect.

[0124] It is understandable that the above-mentioned terminal devices, network devices, communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems can all be used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0125] The present disclosure provides a method, terminal, and storage medium for transmitting a positioning reference signal. In some embodiments, the terms "positioning reference signal transmitting method" and "information processing method" and "communication method" are interchangeable; the terms "positioning reference signal transmitting apparatus" and "information processing apparatus" and "communication apparatus" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0126] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0127] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0128] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0129] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0130] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0131] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0132] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0133] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0134] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0135] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0136] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0137] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0138] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0139] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0140] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0141] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0142] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0143] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0144] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0145] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the communication system 100 includes a terminal 101 and a terminal 102 .

[0146] In some embodiments, terminal 101 and terminal 102 include, for example, at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication capabilities, a smart car, 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, and a wireless terminal device in a smart home, but are not limited thereto.

[0147] In some embodiments, terminal 101 and terminal 102 in FIG1 can communicate via a sidelink. Sidelink communication between terminal 101 and terminal 102 can include one or more of unicast, multicast, or broadcast. It should be noted that in FIG1 , the communication system 100 can include more terminals; there can be one or more terminals 101, and there can also be one or more terminals 102. This is not limited in this disclosure.

[0148] In some embodiments, terminal 101 and terminal 102 may communicate with the network device via an indirect link, where the indirect link may include an uplink and / or a downlink between terminal 101 / terminal 102 and the network device.

[0149] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0150] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0151] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0152] In some embodiments, sidelink positioning between terminals (UEs) may include absolute positioning, relative positioning, and ranging. Absolute positioning is used to determine the absolute coordinates of a terminal (UE); relative positioning is used to determine the coordinates of a terminal (UE) relative to a reference point; and ranging is used to determine the distance and / or angle of a terminal (UE) relative to a reference point. Furthermore, ranging typically involves measuring the distance between two terminals, while absolute positioning and relative positioning can involve the positioning of multiple terminals.

[0153] In other embodiments, the positioning methods may include DL-TDOA (Downlink time difference of arrival), UL-TDOA (Uplink time difference of arrival), multiple RTT (Multiple round trip time), AOA (angle-of-arrival) / AOD (angle-of-departure) and carrier phase positioning, etc. If the positioning result is not converted into absolute position coordinates based on absolute position information such as GPS of RSU, then the positioning result is relative positioning. Otherwise, it is absolute positioning. The terminal being positioned may be the target UE (target terminal), and other UEs that support positioning the target UE are anchor UEs (positioning auxiliary terminals).

[0154] Refer to Figure 2 for an example of DL-TDOA positioning. In Figure 2, a UE can determine its specific position relative to multiple Road Side Units (RSUs) by measuring positioning signals transmitted by the RSUs. The positioning signals can be transmitted via a sidelink. Furthermore, the number of RSUs can be, for example, greater than or equal to three.

[0155] In some embodiments, when positioning involves two terminals, the two terminals are each other's anchor UEs (positioning assisted UEs). There may be different types of anchor UEs. For example, an RSU-type anchor UE belongs to an infrastructure that can provide positioning services by collaborating with other RSUs. For another example, an ordinary UE can also serve as an anchor UE, but it is difficult for it to assist in providing positioning services with other UEs. In addition, some anchor UEs have location information such as GPS, which can assist other UEs in absolute positioning, while other anchor UEs may not have location information such as GPS.

[0156] Optionally, the protocol for exchanging sidelink positioning messages between two UEs is the SLPP (Sidelink Positioning Protocol). For SL positioning, the positioning messages exchanged between the UE and the LMF (Location Management Function) are also SLPP messages. For Uu port positioning, the positioning messages exchanged between the UE and the LMF are LPP (LTE Positioning Protocol) messages.

[0157] In other implementations, SL PRS transmission may be performed on a dedicated resource pool or a shared resource pool, wherein the shared resource pool is a resource pool shared by SL PRS and SL data transmission.

[0158] In addition, the resource allocation of SL PRS can adopt scheme 1 and scheme 2, among which scheme 1 is a resource allocation mode based on base station scheduling, that is, a resource allocation mode based on network scheduling; scheme 2 is a resource allocation mode in which the terminal independently selects resources, that is, a UE-autonomous resource allocation mode. For the shared resource pool, the terminal can send SL PRS and PSSCH (Physical Sidelink Shared Channel) in one slot through TDM (Time Division Multiplexing).

[0159] In some implementations, for SL grants on a shared resource pool, SL PRS and PSSCH can be sent simultaneously in a single slot via TDM. It is currently unclear how the terminal performs sidelink resource selection, periodic resource reservation, retransmission, transmission priority determination, and SCI (Sidelink Control Information) information acquisition in this scenario.

[0160] FIG3 is an interactive diagram of a method for transmitting a positioning reference signal according to an embodiment of the present disclosure. As shown in FIG3 , an embodiment of the present disclosure relates to a method for transmitting a positioning reference signal, and the method includes:

[0161] Step S3101: determine that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, determine to allocate resources to the first terminal from a target resource pool, and obtain sidelink granted resources on the target resource pool.

[0162] In some embodiments, the first terminal determines that the SL PRS is triggered, and it can allocate resources to the first terminal from shared resources. Specifically, it obtains side link grant resources (SL grant) from the target resource pool. On this basis, the SL PRS is sent according to the side link grant resources. Here, the target resource pool may include a shared resource pool and / or a dedicated resource pool. Exemplarily, the target resource pool may be a shared resource pool, which refers to a resource pool shared by the sending resources of the SL PRS and the sending resources of the SL data (SL data), that is, the SL PRS is sent using resources in the SL data sending resource pool.

[0163] In some embodiments, upon determining that it is triggered to transmit a sidelink positioning reference signal (SL PRS), the first terminal may determine whether to allocate resources to the first terminal from a target resource pool based on pre-acquired direct link configuration information. If it is determined that resources are to be allocated to the first terminal from the target resource pool based on the pre-acquired direct link configuration information, the first terminal may send the SL PRS to the second terminal based on the sidelink granted resources in the target resource pool.

[0164] In some implementations, the direct link configuration information may be sent by the network device to the first terminal. Specifically, the direct link configuration information may be sent by the network device to the first terminal via a broadcast message.

[0165] In other embodiments, the direct link configuration information may be sent by the network device to the first terminal via a first message. The first message may be a dedicated message for the first terminal. For example, the first message may include at least one of an RRC (Radio Resource Control) message, a MAC CE (Medium Access Control Control Element), a DCI (Downlink Control Information), or other messages sent by the network device to the first terminal.

[0166] In some embodiments, a sidelink grant (SL grant) may include information such as sidelink resource allocation, and the first terminal may use the sidelink resources indicated / allocated by the SL grant for transmission on the SL. The SL grant includes / indicates / schedules the time-frequency resources for transmitting a physical sidelink control channel (PSCCH) and / or a physical sidelink shared channel (PSSCH). For example, an SL grant may include information about at least one sidelink resource.

[0167] In some embodiments, the SL PRS may be used to determine location information of the first terminal and / or the second terminal, and / or to determine SL PRS measurement information, wherein the second terminal may be a peer terminal performing SL communication or SL positioning with the first terminal.

[0168] In some implementations, the disclosed embodiments may select a target resource pool from a shared resource pool or a dedicated resource pool based on resource pool selection requirements, wherein the resource pool selection requirements may include at least one of the following: SL-PRS bandwidth requirement; comb size requirement; and SL-PRS duration requirement.

[0169] As an example, when the first terminal determines that the shared resource pool meets the SL-PRS bandwidth requirement, the shared resource pool is selected as the target resource pool. Alternatively, when the first terminal determines that the shared resource pool meets the comb size requirement, the shared resource pool is selected as the target resource pool. Alternatively, when the first terminal determines that the shared resource pool meets the SL-PRS duration requirement, the shared resource pool is selected as the target resource pool.

[0170] Optionally, when the first terminal determines that the shared resource pool meets the SL-PRS bandwidth requirement and the comb size requirement, the shared resource pool is used as the target resource pool. Optionally, when the first terminal determines that the shared resource pool meets the SL-PRS bandwidth requirement and the SL-PRS duration requirement, the shared resource pool is used as the target resource pool. Optionally, when the first terminal determines that the shared resource pool meets the comb size requirement and the SL-PRS duration requirement, the shared resource pool is used as the target resource pool. Optionally, when the first terminal determines that the shared resource pool meets the SL-PRS bandwidth requirement, the comb size requirement, and the SL-PRS duration requirement, the shared resource pool is used as the target resource pool.

[0171] As another example, when the first terminal determines that the dedicated resource pool meets the SL-PRS bandwidth requirement, the dedicated resource pool is used as the target resource pool. Alternatively, when the first terminal determines that the dedicated resource pool meets the comb size requirement, the dedicated resource pool is used as the target resource pool. Alternatively, when the first terminal determines that the dedicated resource pool meets the SL-PRS duration requirement, the dedicated resource pool is used as the target resource pool.

[0172] Optionally, when the first terminal determines that the dedicated resource pool meets the SL-PRS bandwidth requirement and the comb size requirement, the dedicated resource pool is used as the target resource pool. Optionally, when the first terminal determines that the dedicated resource pool meets the SL-PRS bandwidth requirement and the SL-PRS duration requirement, the dedicated resource pool is used as the target resource pool. Optionally, when the first terminal determines that the dedicated resource pool meets the comb size requirement and the SL-PRS duration requirement, the dedicated resource pool is used as the target resource pool. Optionally, when the first terminal determines that the dedicated resource pool meets the SL-PRS bandwidth requirement, the comb size requirement, and the SL-PRS duration requirement, the dedicated resource pool is used as the target resource pool.

[0173] In the embodiment of the present disclosure, the resource pool selection requirement is mainly used to select a qualified resource pool, and the resource pool selection requirement can be obtained in at least one of the following ways: provided by the SLPP layer; determined by the MAC layer.

[0174] In other embodiments, the disclosed embodiments may select a target resource pool from a shared resource pool or a dedicated resource pool based on the priority of the resource pool. For example, if the shared resource pool has a higher priority than the dedicated resource pool, the shared resource pool may be selected as the target resource pool. For another example, if the shared resource pool has a lower priority than the dedicated resource pool, the dedicated resource pool may be selected as the target resource pool.

[0175] In some embodiments, in the process of obtaining the side link authorized resources on the target resource pool, the first terminal can first obtain the resource allocation mode adopted by it. On this basis, if it is determined that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, the first terminal can continue to determine whether the first terminal is configured with the first resource pool.

[0176] The first resource pool may be a dedicated resource pool in the target resource pool for transmitting the SL PRS. If it is determined that the resource allocation mode adopted by the first terminal is the autonomous resource allocation mode and it is determined that the first terminal is configured with the first resource pool, the first terminal may obtain the sidelink authorized resources on the first resource pool.

[0177] Optionally, if it is determined that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and it is determined that the first terminal is not configured with a first resource pool, the first terminal can obtain side link authorization resources on a second resource pool, wherein the second resource pool can be other public resource pools and / or other dedicated resource pools in the target resource pool other than the first resource pool.

[0178] Exemplarily, the second resource pool may be one or more of sl-BWP-DiscPoolConfig, sl-BWP-DiscPoolConfigCommon or other public resource pools configured for the first terminal. Other public resource pools configured for the first terminal may be, for example, public resource pools used for communication, such as a resource pool used to discover Sidelink-data.

[0179] In other embodiments, the embodiment of the present disclosure can obtain the resource reservation interval of the SL PRS and generate side link authorization resources based on the resource reservation interval. On this basis, based on the generated side link authorization resources, the first terminal can send a side link positioning reference signal SL PRS to the second terminal.

[0180] Specifically, the first terminal can obtain the SL resource reservation interval list based on the direct link configuration information, that is, the SL resource reservation interval list can be pre-configured. Then, the resource reservation interval of the SL PRS is obtained according to the SL resource reservation interval list, and then the side link authorization resource is generated according to the resource reservation interval. It can be seen that the embodiment of the present disclosure can more reliably and effectively implement SL PRS transmission by considering the resource reservation interval of the SL PRS when determining that the SL PRS is triggered.

[0181] In other embodiments, when it is determined that the first terminal has triggered SL PRS transmission, the embodiment of the present disclosure can determine whether there is SL data transmission. If it is determined that there is no SL data (available SL data) transmission, the embodiment of the present disclosure can set the number of hybrid automatic repeat request HARQ (hybrid automatic repeat request) retransmissions (retransmission) to zero, thereby avoiding the execution of unnecessary retransmission operations and reducing the power of information transmission.

[0182] Optionally, if there is SL data transmission, the number of automatic repeat request HARQ retransmissions remains unchanged, that is, when performing a retransmission operation, the number of HARQ retransmissions may be based on the number of automatic repeat request HARQ retransmissions. Here, the number of automatic repeat request HARQ retransmissions may be determined based on the direct link configuration information.

[0183] In other embodiments, the side link grant resource (SL grant) may include a time-frequency resource. Before sending the SL PRS to the second terminal based on the side link grant resource, the embodiment of the present disclosure may determine whether the time-frequency resource meets the first preset condition. The first preset condition may include at least one of the following: the time-frequency resource meets the requirements of the remaining packet delay budget PDB (Packet Delay budget) of the logical channel data; the time-frequency resource meets the requirements of the remaining delay budget (Delay budget) of the SL PRS. The remaining packet delay budget of the logical channel data may be the remaining packet delay budget of the PDU (packet data unit) of the logical channel data.

[0184] Specifically, it is determined that the time-frequency resources meet the requirements of the remaining data packet delay budget of the logical channel data, and the first terminal can send the SL PRS to the second terminal based on the sidelink authorization resources. Further, the first terminal can determine whether there is logical channel data, and if there is logical channel data, determine whether the time-frequency resources meet the requirements of the remaining data packet delay budget of the logical channel data.

[0185] Optionally, it is determined that the time-frequency resources meet the remaining delay budget requirement of the SL PRS, and the first terminal may send the SL PRS to the second terminal according to the sidelink authorized resources.

[0186] Optionally, it is determined that the time-frequency resources meet the remaining packet delay budget of the logical channel data and meet the remaining delay budget requirements of the SL PRS, and the first terminal can send the SL PRS to the second terminal based on the sidelink authorized resources.

[0187] Optionally, when it is determined that the sidelink granted resource does not meet the first preset condition, the first terminal may determine whether to send the SL PRS based on the sidelink granted resource, that is, determine whether to continue sending the SL PRS. If it is determined to continue sending the SL PRS, the SL PRS may be sent to the second terminal based on the sidelink granted resource. Conversely, if the first terminal determines not to send the SL PRS based on the sidelink granted resource, the sidelink granted resource is cleared and the sending resource selection operation is re-executed, that is, the terminal device may clear the SL grant and trigger SL sending resource reselection.

[0188] In other embodiments, the embodiments of the present disclosure can determine the physical sidelink shared channel PSSCH duration and the physical sidelink control channel PSCCH duration based on the sidelink grant resources (SL grant), wherein the PSSCH duration may include the PSSCH and SL PRS used to transmit data information, that is, the PSSCH duration involves PSSCH orthogonal frequency division multiplexing OFDM (Orthogonal Frequency Division Multiplexing) symbols, and involves the PSSCH OFDM symbols occupied by the SL PRS.

[0189] It should be noted that the PSSCH duration may include the PSSCH used to transmit data information, or may include the PSSCH and SL PRS used to transmit data information, that is, the SL PRS may exist in the PSSCH duration, or may not exist in the PSSCH duration.

[0190] In addition, after obtaining the PSSCH duration and PSCCH duration, the embodiment of the present disclosure can determine whether the PSSCH duration and PSCCH duration meet the second preset condition. If it is determined that the PSSCH duration and PSCCH duration meet the second preset condition, the embodiment of the present disclosure can send SL PRS to the second user equipment based on the side link authorization resources on the target resource pool.

[0191] Optionally, if it is determined that the PSSCH duration and the PSCCH duration do not meet the second preset condition, the embodiment of the present disclosure may clear the sidelink granted resources and re-execute the transmission resource selection operation.

[0192] Here, the second preset condition may include at least one of the following: the PSSCH duration falls within a discontinuous reception (DRX) active time; the PSCCH duration falls within a discontinuous reception active time.

[0193] Specifically, it is determined that the PSSCH duration falls within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorization resources on the target resource pool. Optionally, it is determined that the PSCCH duration falls within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorization resources on the target resource pool. Optionally, it is determined that both the PSSCH duration and the PSCCH duration fall within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorization resources on the target resource pool.

[0194] Otherwise, it is determined that the PSSCH duration does not fall within the DRX activation period, the sidelink granted resources are cleared, and the transmit resource selection operation is re-executed. Alternatively, it is determined that the PSCCH duration does not fall within the DRX activation period, the sidelink granted resources are cleared, and the transmit resource selection operation is re-executed. Alternatively, it is determined that both the PSSCH duration and the PSCCH duration do not fall within the DRX activation period, the sidelink granted resources are cleared, and the transmit resource selection operation is re-executed.

[0195] In some other implementations, the embodiments of the present disclosure may determine the PSSCH duration, PSCCH duration, and SL PRS duration based on the sidelink grant resources (SL grant), wherein the PSSCH duration does not include the SL PRS.

[0196] In addition, after obtaining the PSSCH duration, PSCCH duration and SL PRS duration, the embodiment of the present disclosure can determine whether the PSSCH duration, PSCCH duration and SL PRS duration meet the second preset condition. If it is determined that the PSSCH duration, PSCCH duration and SL PRS duration meet the second preset condition, the embodiment of the present disclosure can send SL PRS to the second user equipment based on the side link authorization resources on the target resource pool.

[0197] Optionally, if it is determined that the PSSCH duration, the PSCCH duration, and the SL PRS duration do not meet the second preset condition, the embodiment of the present disclosure may clear the sidelink granted resources and re-execute the transmission resource selection operation.

[0198] Here, the second preset condition may include at least one of the following: the PSSCH duration falls within the discontinuous reception active period (active time); the PSCCH duration falls within the discontinuous reception active period; the SL PRS duration falls within the discontinuous reception active period.

[0199] Specifically, it is determined that the PSSCH duration falls within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorized resources on the target resource pool. Optionally, it is determined that the PSCCH duration falls within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorized resources on the target resource pool. Optionally, it is determined that the SL PRS duration falls within the discontinuous reception activation period, and an SL PRS is sent to the second user equipment based on the sidelink authorized resources on the target resource pool.

[0200] Optionally, it is determined that both the PSSCH duration and the PSCCH duration fall within the discontinuous reception activation period, and the SL PRS is sent to the second user equipment according to the sidelink authorized resources on the target resource pool. Optionally, it is determined that both the PSSCH duration and the SL PRS duration fall within the discontinuous reception activation period, and the SL PRS is sent to the second user equipment according to the sidelink authorized resources on the target resource pool. Optionally, it is determined that both the SL PRS duration and the PSCCH duration fall within the discontinuous reception activation period, and the SL PRS is sent to the second user equipment according to the sidelink authorized resources on the target resource pool. Optionally, it is determined that both the PSSCH duration, the PSCCH duration and the SL PRS duration fall within the discontinuous reception activation period, and the SL PRS is sent to the second user equipment according to the sidelink authorized resources on the target resource pool.

[0201] Otherwise, if the PSSCH duration is determined not to fall within the DRX activation period, the sidelink granted resources are cleared and the transmit resource selection operation is re-executed. If the PSCCH duration is determined not to fall within the DRX activation period, the sidelink granted resources are cleared and the transmit resource selection operation is re-executed. Alternatively, if the SL PRS duration is determined not to fall within the DRX activation period, the sidelink granted resources are cleared and the transmit resource selection operation is re-executed.

[0202] Optionally, it is determined that both the PSSCH duration and the PSCCH duration do not fall within the discontinuous reception activation period, the sidelink authorization resources are cleared, and the transmission resource selection operation is re-executed. Optionally, it is determined that both the PSSCH duration and the SL PRS duration do not fall within the discontinuous reception activation period, the sidelink authorization resources are cleared, and the transmission resource selection operation is re-executed. Optionally, it is determined that both the SL PRS duration and the PSCCH duration do not fall within the discontinuous reception activation period, the sidelink authorization resources are cleared, and the transmission resource selection operation is re-executed. Optionally, it is determined that both the PSSCH duration, the PSCCH duration and the SL PRS duration do not fall within the discontinuous reception activation period, the sidelink authorization resources are cleared, and the transmission resource selection operation is re-executed.

[0203] In other embodiments, the first terminal may obtain the interval between the end symbol of the PSSCH and the start symbol of the PSFCH (Physical Sidelink Feedback Channel) based on the PSSCH duration. On this basis, it is determined whether the interval meets a third preset condition. If it is determined that the interval between the end symbol of the PSSCH and the start symbol of the PSFCH meets the third preset condition, the first terminal may send an SL PRS to the second terminal based on the sidelink granted resources on the target resource pool.

[0204] Optionally, the third preset condition may include that the interval between the end symbol of PSSCH and the start symbol of PSFCH exceeds the preset interval, that is, when the first terminal determines that the interval between the end symbol of PSSCH and the start symbol of PSFCH exceeds the preset interval, the first terminal sends the SL PRS to the second terminal according to the side link authorized resources on the target resource pool.

[0205] In some other embodiments, the first terminal may obtain a MAC PDU based on a SL grant, and determine resource information of a SL PRS based on sidelink granted resources. The first terminal may include a SL HARQ entity. Specifically, the first terminal may call a multiplexing and assembly entity based on the SL HARQ entity to determine resource information of the SL PRS.

[0206] Exemplarily, the first terminal may call a multiplexing and aggregation entity based on the SL HARQ entity to determine the SL PR resource ID.

[0207] In the disclosed embodiment, the resource information of the SL PRS may be included in the SL transmission information (Sidelink transmission information). In addition, the SL PRS may include at least one of a resource identifier (ID) and priority information of the SL PRS. The first terminal may set the SL PRS resource information in the Sidelink transmission information to the selected SL PRS resource ID.

[0208] In addition, the first terminal may select the highest priority from the logical channel priority, the MAC CE priority and the SL PRS priority, and use the priority value corresponding to the highest priority as the priority information.

[0209] As an example, the highest priority among the three priorities of logical channel priority, MAC CE priority and SL PRS priority is SL PRS priority, and the priority value of the SL PRS priority can be used as the priority information in the resource information of SL PRS.

[0210] As another example, the highest priority among the three priorities of logical channel priority, MAC CE priority and SL PRS priority is the logical channel priority, then the priority value of the logical channel priority can be used as the priority information in the resource information of the SL PRS.

[0211] As another example, the highest priority among the three priorities of logical channel priority, MAC CE priority and SL PRS priority is MAC CE priority, then the priority value of the MAC CE priority can be used as the priority information in the resource information of SL PRS.

[0212] Step S3102: Send SL PRS according to the sidelink granted resources.

[0213] In some embodiments, the first terminal may send an SL PRS based on a sidelink grant resource on a target resource pool. Specifically, the first terminal may send an SL PRS to the second terminal based on a sidelink grant resource SL grant on the target resource pool. The SL PRS is a signal sent and / or received via an SL link and used to assist the terminal device in positioning.

[0214] In some implementations, the second terminal may receive the SL PRS sent by the first terminal according to the sidelink granted resource SL grant on the target resource pool.

[0215] In addition, after obtaining the priority value of the highest priority, the SL HARQ process (Sidelink HARQ process) of the first terminal can determine whether the priority value of the highest priority is lower than the priority threshold. If it is determined that the priority value of the highest priority is lower than the priority threshold, the first terminal can send the SL MAC PDU to the second terminal. Exemplarily, the priority threshold can be sl-PrioritizationThres.

[0216] Optionally, if it is determined that the priority value of the highest priority is higher than the priority threshold, the first terminal may send an uplink UL MAC PDU to the second terminal.

[0217] In summary, the SL HARQ process of the first terminal determines that the priority value of the highest priority is lower than the priority threshold, so the SL MAC PDU can be sent preferentially instead of the Uplink MAC PDU.

[0218] In some other embodiments, the SL HARQ process of the first terminal may instruct the physical layer (Physical, PHY) to transmit the SL PRS based on the sidelink control information SCI.

[0219] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0220] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0221] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0222] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0223] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0224] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0225] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0226] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0227] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0228] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0229] The communication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3102. For example, step 1 may be implemented as an independent embodiment, step 2 may be implemented as an independent embodiment, and steps 1+2 may be implemented as independent embodiments, but are not limited thereto.

[0230] FIG4A is a flow chart of a method for transmitting a positioning reference signal according to an embodiment of the present disclosure. As shown in FIG4A , an embodiment of the present disclosure relates to a method for transmitting a positioning reference signal, the method comprising:

[0231] Step S4101: determine that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and determine to allocate resources to the first terminal from a target resource pool, and the first terminal obtains a sidelink granted resource on the target resource pool.

[0232] The optional implementation of step S4101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0233] Step S4102: The first terminal determines that the time-frequency resources meet the first preset condition, and sends an SL PRS to the second terminal according to the sidelink granted resources.

[0234] The optional implementation of step S4102 can refer to the optional implementation of step S3102 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0235] In some embodiments, the first terminal may send the SL PRS to the second terminal, but is not limited thereto and may also send the SL PRS to other entities.

[0236] The communication method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4102. For example, step 1 may be implemented as an independent embodiment, step 2 may be implemented as an independent embodiment, and steps 1+2 may be implemented as independent embodiments, but are not limited thereto.

[0237] In some embodiments, the side link authorization resources include time-frequency resources. After obtaining the side link authorization resources on the target resource pool, the embodiment of the present disclosure can determine whether the time-frequency resources in the side link authorization resources on the target resource pool meet the first preset condition. If it is determined that the time-frequency resources meet the first preset condition, the first terminal can send SL PRS to the second terminal based on the side link authorization resources.

[0238] In some embodiments, the first preset condition includes at least one of the following:

[0239] The time-frequency resources meet the requirements of the remaining data packet delay budget PDB of the logical channel data;

[0240] The time-frequency resources meet the requirement of the remaining delay budget of the SL PRS.

[0241] In some embodiments, if it is determined that the side link authorization resource does not meet the first preset condition, and the first terminal determines not to send the SL PRS based on the side link authorization resource, the first terminal may clear the side link authorization resource and re-execute the sending resource selection operation, that is, re-select the sending resource.

[0242] FIG4B is a flow chart of a method for transmitting a positioning reference signal according to an embodiment of the present disclosure. As shown in FIG4B , an embodiment of the present disclosure relates to a method for transmitting a positioning reference signal, the method comprising:

[0243] Step S4201: determine that a first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and determine to allocate resources to the first terminal from a target resource pool, and the first terminal obtains sidelink granted resources on the target resource pool.

[0244] Optional implementations of step S4201 can be found in step S3101 of FIG. 3 , optional implementations of step S4101 of FIG. 4A , and other related parts in the embodiments involved in FIG. 3 and FIG. 4A , which will not be described in detail here.

[0245] The target resource pool may include a shared resource pool and / or a dedicated resource pool.

[0246] In some embodiments, it is determined that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and it is determined that the first terminal is configured with a first resource pool. The first terminal can obtain side link authorization resources on the first resource pool, and the first resource pool is a dedicated resource pool in the target resource pool for transmitting the SL PRS.

[0247] In some embodiments, it is determined that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and it is determined that the first terminal is not configured with the first resource pool. The first terminal can obtain side link authorization resources on the second resource pool, and the second resource pool is other public resource pools and / or other dedicated resource pools in the target resource pool other than the first resource pool.

[0248] In some implementations, the first terminal may obtain a resource reservation interval of the SL PRS, and on this basis, generate the sidelink granted resources according to the resource reservation interval.

[0249] In some implementations, when it is determined that the first terminal is triggered to transmit SL PRS and that there is no SL data transmission, the first terminal may set the number of hybrid automatic repeat request HARQ retransmissions to zero.

[0250] In some embodiments, the sidelink granted resources include time-frequency resources, and it is determined that the time-frequency resources meet a first preset condition. The first terminal may send the SL PRS to the second terminal based on the sidelink granted resources.

[0251] In some embodiments, the first preset condition includes at least one of the following:

[0252] The time-frequency resources meet the requirements of the remaining data packet delay budget PDB of the logical channel data;

[0253] The time-frequency resources meet the requirement of the remaining delay budget of the SL PRS.

[0254] In some embodiments, if it is determined that the sidelink authorization resource does not meet the first preset condition and the first terminal determines not to send the SL PRS based on the sidelink authorization resource, the first terminal may clear the sidelink authorization resource and re-execute the sending resource selection operation.

[0255] In some embodiments, the first terminal may determine the physical sidelink shared channel PSSCH duration and the physical sidelink control channel PSCCH duration based on the sidelink granted resources, where the PSSCH duration includes the PSSCH for transmitting data information and the SL PRS.

[0256] In some implementations, if it is determined that the PSSCH duration and the PSCCH duration do not satisfy a second preset condition, the first terminal may clear the sidelink granted resources and re-execute the transmission resource selection operation.

[0257] In some embodiments, the second preset condition includes at least one of the following:

[0258] The PSSCH duration falls within the discontinuous reception activation period;

[0259] The PSCCH duration falls within the discontinuous reception activation period.

[0260] In some embodiments, the first terminal may determine the PSSCH duration, the PSCCH duration, and the SL PRS duration based on the sidelink granted resources, wherein the PSSCH duration does not include the SL PRS.

[0261] In some implementations, if it is determined that the PSSCH duration, the PSCCH duration, and the SL PRS duration do not satisfy a second preset condition, the first terminal may clear the sidelink authorization resources and re-execute the sending resource selection operation.

[0262] In some embodiments, the second preset condition includes at least one of the following:

[0263] The PSSCH duration falls within the discontinuous reception activation period;

[0264] The PSCCH duration falls within the discontinuous reception activation period;

[0265] The SL PRS duration falls within the discontinuous reception activation period.

[0266] In some embodiments, the first terminal can obtain the interval between the end symbol of the PSSCH and the start symbol of the physical sidelink feedback channel PSFCH based on the PSSCH duration, and after determining that the interval meets the third preset condition, the first terminal can send the SL PRS to the second terminal based on the sidelink authorized resources on the target resource pool.

[0267] In some embodiments, the third preset condition includes that an interval between an end symbol of the PSSCH and a start symbol of the PSFCH exceeds a preset interval.

[0268] In some implementations, the first terminal may obtain a media access control packet data unit MAC PDU based on the sidelink granted resources, and determine resource information of the SL PRS based on the sidelink granted resources.

[0269] In some embodiments, the first terminal may include a SL HARQ entity, and the first terminal may invoke a multiplexing and aggregation entity based on the SL HARQ entity to determine resource information of the SL PRS.

[0270] In some implementations, the resource information of the SL PRS includes at least one of a resource identifier and priority information of the SL PRS.

[0271] In some implementations, the first terminal may select the highest priority from the logical channel priority, the media access control element MAC CE priority, and the SL PRS priority, and use the priority value corresponding to the highest priority as the priority information.

[0272] In some implementations, the first terminal may select the target resource pool from the shared resource pool or the dedicated resource pool according to a resource pool selection requirement.

[0273] In some implementations, the resource pool selection requirement includes at least one of the following:

[0274] Bandwidth requirements for SL-PRS;

[0275] Comb size requirements;

[0276] SL-PRS duration requirements.

[0277] In some implementations, the resource pool selection requirement is obtained according to at least one of the following methods:

[0278] Provided by the SLPP layer;

[0279] Determined by the MAC layer.

[0280] Step S4202: The first terminal sends an SL PRS to the second terminal according to the sidelink granted resources.

[0281] The optional implementation of step S4202 can refer to the optional implementation of step S3102 in Figure 3, the optional implementation of step S4102 in Figure 4A, and other related parts in the embodiments involved in Figures 3 and 4A, which will not be repeated here.

[0282] In some embodiments, the first terminal may send the SL PRS to the second terminal, but is not limited thereto and may also send the SL PRS to other entities.

[0283] The communication method involved in the embodiment of the present disclosure may include at least one of steps S4201 to S4202. For example, step 1 may be implemented as an independent embodiment, step 2 may be implemented as an independent embodiment, and steps 1+2 may be implemented as independent embodiments, but are not limited thereto.

[0284] In some embodiments, the SL HARQ process of the first terminal determines that the priority value of the highest priority is lower than a priority threshold, and the first terminal may send a SL MAC PDU to the second terminal.

[0285] In some embodiments, the SL HARQ process of the first terminal determines that the priority value of the highest priority is higher than the priority threshold, and the first terminal can send an uplink UL MAC PDU to the second terminal.

[0286] In some embodiments, the SL HARQ process of the first terminal instructs the physical layer to transmit the SL PRS based on sidelink control information SCI.

[0287] FIG5A is a flow chart of a method for transmitting a positioning reference signal according to an embodiment of the present disclosure. As shown in FIG5A , an embodiment of the present disclosure relates to a method for transmitting a positioning reference signal, the method comprising:

[0288] Step S5101: The second terminal receives the SL PRS sent by the first terminal.

[0289] The optional implementation of step S5101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0290] In some embodiments, the second terminal receives the SL PRS sent by the first terminal, but is not limited thereto and may also receive the SL PRS from other entities.

[0291] In an embodiment of the present disclosure, SL PRS may be determined when the first terminal is triggered to transmit the side link positioning reference signal SL PRS, and when it is determined that resources are allocated to the first terminal from the target resource pool, it is sent according to the side link authorized resources on the target resource pool, and the target resource pool includes a shared resource pool and / or a dedicated resource pool.

[0292] Embodiment 1: In the UE autonomous resource allocation mode, if SL PRS transmission is triggered, if no dedicated resource pool is configured for SL PRS transmission, the UE selects other public or dedicated resource pools for SL PRS transmission.

[0293] Example 1.1: Other public / dedicated resource pools may be one or more of the following resource pools: sl-BWP-DiscPoolConfig; sl-BWP-DiscPoolConfigCommon; other public resource pools configured for the UE.

[0294] Embodiment 1.2: If a dedicated resource pool for SL PRS transmission is configured, the UE selects the dedicated resource pool for SL PRS transmission.

[0295] Embodiment 2: When the UE selects a resource reservation interval based on the configured SL resource reservation interval list, if the SL PRS is triggered, the resource reservation interval (or period) of the SL PRS needs to be considered.

[0296] Embodiment 3: If only the SL PRS is triggered by the UE but no SL data is available, the number of HARQ retransmissions is selected to be 0.

[0297] Example 4: When the UE selects time-frequency resources for a transmission opportunity, if there is logical channel data, the time-frequency resources can meet the remaining PDB (Packet Delay budget) of the logical channel data and the remaining delay budget (Delay budget) of the SL PRS (if there is a triggered SL PRS).

[0298] Embodiment 5: For the SL grant allocated by the base station or the SL grant selected by the UE based on autonomous resource selection, the UE does not consider SL PRS transmission when determining the PSSCH duration / PSCCH duration, that is, it does not exclude symbols that may be used for SL PRS transmission.

[0299] Example 5.1: The UE determines whether the PSSCH duration / PSCCH duration falls within a DRX active time based on the PSSCH duration and PSCCH duration determined above.

[0300] Embodiment 5.2: The UE determines the interval between the PSSCH end symbol and the PSFCH start symbol based on the PSSCH duration determined above.

[0301] Example 6: If the selected SL grant cannot meet the remaining packet delay budget PDU of the logical channel data and cannot meet the remaining delay budget (Delay budget) requirement of the SL PRS, and the UE determines not to send the SL PRS, the UE clears the SL grant and triggers SL transmission resource reselection.

[0302] Embodiment 7: The UE obtains the MAC PDU based on the Sidelink grant, determines the SL PRS resource information based on the Sidelink grant, and sets the SL PRS resource information in the sidelink transmission information as the selected SL PRS resource ID.

[0303] Embodiment 7.1: The SL HARQ entity of the UE determines the SL PRS resource information (ie, the SL PRS resource ID) through a multiplexing and assembly entity.

[0304] Embodiment 8: The UE sets the priority in the sidelink transmission information to the priority value corresponding to the highest priority among the logical channel priority, the MAC CE priority and the SL PRS priority.

[0305] Embodiment 9: The Sidelink HARQ process of the UE prioritizes sending the SL MAC PDU over the uplink MAC PDU in the following circumstances: Specifically, the priority value corresponding to the highest priority among the SL logical channel priority, the SL MAC CE priority, and the SL PRS priority is lower than sl-PrioritizationThres.

[0306] Embodiment 10: If the UE determines to transmit the SL PRS, the UE's Sidelink HARQ process instructs the physical layer (PHY) to transmit the SL PRS according to the content of the Sidelink Control Information (SCI).

[0307] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0308] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0309] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0310] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0311] Figure 6A is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 6A, the first terminal 101 may include: at least one of a processing module 6101, a transceiver module 6102, etc. In some embodiments, the processing module 6101 is used to determine that the first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and to determine to allocate resources to the first terminal from a target resource pool, and to obtain a sidelink authorized resource on the target resource pool, wherein the target resource pool includes a shared resource pool and / or a dedicated resource pool; the transceiver module 6102 is used to send the SL PRS to the second terminal based on the sidelink authorized resource. Optionally, the processing module is used to execute at least one of the other steps (such as step S3101, but not limited thereto) executed by the terminal 101 in any of the above methods, which will not be repeated here. Optionally, the transceiver module is used to execute at least one of the communication steps (such as sending and / or receiving, but not limited thereto) executed by the terminal 101 in any of the above methods, which will not be repeated here.

[0312] Figure 6B is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 6B, the second terminal 102 may include: a transceiver module 6201. In some embodiments, the above-mentioned transceiver module 6201 is used to receive the SL PRS sent by the first terminal, and the SL PRS is determined when the first terminal is triggered to transmit the side link positioning reference signal SL PRS, and when it is determined that resources are allocated to the first terminal from the target resource pool, it is sent according to the side link authorization resources on the target resource pool, and the target resource pool includes a shared resource pool and / or a dedicated resource pool. Optionally, the above-mentioned transceiver module is used to execute at least one of the communication steps such as sending and / or receiving performed by the second terminal 102 in any of the above methods (for example, step S5101, but not limited thereto), which will not be repeated here.

[0313] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0314] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0315] As shown in FIG7A , the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 7100 is used to perform any of the above methods.

[0316] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0317] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3102, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S3101, but not limited thereto).

[0318] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0319] In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0320] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0321] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0322] The chip 7200 includes one or more processors 7201 , and the chip 7200 is configured to execute any of the above methods.

[0323] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and can be used to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0324] In some embodiments, the interface circuit 7202 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S3102, but not limited to this), and the processor 7201 performs at least one of the other steps (for example, step S3101, but not limited to this).

[0325] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0326] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0327] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0328] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0329] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A method for sending a positioning reference signal, characterized in that: The method comprises: Determine that a sidelink positioning reference signal SL PRS transmission is triggered by the first terminal, and determine to allocate resources to the first terminal from a target resource pool, and obtain a sidelink authorized resource on the target resource pool, where the target resource pool includes a shared resource pool and / or a dedicated resource pool; The SL PRS is sent to the second terminal according to the sidelink granted resources.

2. The method according to claim 1, characterized in that The acquiring of the sidelink authorized resources on the target resource pool includes: Determine that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and determine that the first terminal is configured with a first resource pool, obtain the side link authorization resources on the first resource pool, and the first resource pool is a dedicated resource pool in the target resource pool for transmitting the SL PRS.

3. The method according to claim 2, characterized in that The method further comprises: Determine that the resource allocation mode adopted by the first terminal is an autonomous resource allocation mode, and determine that the first terminal is not configured with the first resource pool, obtain side link authorization resources on the second resource pool, and the second resource pool is other public resource pools and / or other dedicated resource pools in the target resource pool except the first resource pool.

4. The method according to any one of claims 1 to 3, characterized in that: The acquiring of the sidelink authorized resources on the target resource pool further includes: Obtaining a resource reservation interval of the SL PRS; The sidelink granted resources are generated according to the resource reservation interval.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: It is determined that SL PRS transmission is triggered for the first terminal, and it is determined that there is no SL data transmission, and the number of hybrid automatic repeat request HARQ retransmissions is set to zero.

6. The method according to any one of claims 1 to 5, characterized in that: The sidelink granted resource includes a time-frequency resource, and sending the SL PRS to the second terminal according to the sidelink granted resource includes: Determine that the time-frequency resources meet a first preset condition, and send the SL PRS to the second terminal according to the sidelink authorized resources.

7. The method according to claim 6, characterized in that The first preset condition includes at least one of the following: The time-frequency resources meet the requirements of the remaining data packet delay budget PDB of the logical channel data; The time-frequency resources meet the requirement of the remaining delay budget of the SL PRS.

8. The method according to claim 6, characterized in that The method further comprises: It is determined that the sidelink granted resource does not meet the first preset condition, and the first terminal determines not to send the SL PRS based on the sidelink granted resource, clears the sidelink granted resource, and re-executes the sending resource selection operation.

9. The method according to any one of claims 1 to 8, characterized in that: The method comprises: The physical sidelink shared channel PSSCH duration and the physical sidelink control channel PSCCH duration are determined according to the sidelink granted resources, and the PSSCH duration includes PSSCH transmission for transmitting data information and the SL PRS.

10. The method according to claim 9, characterized in that The method further comprises: Determine that the PSSCH duration and the PSCCH duration do not satisfy a second preset condition, clear the sidelink authorized resources, and re-execute the sending resource selection operation.

11. The method according to claim 10, characterized in that The second preset condition includes at least one of the following: The PSSCH duration falls within the discontinuous reception activation period; The PSCCH duration falls within the discontinuous reception activation period.

12. The method according to any one of claims 1 to 8, characterized in that: The method further comprises: The PSSCH duration, PSCCH duration and SL PRS duration are determined according to the sidelink authorized resources, and the PSSCH duration does not include SL PRS.

13. The method according to claim 12, characterized in that The method further comprises: Determine that the PSSCH duration, the PSCCH duration, and the SL PRS duration do not satisfy a second preset condition, clear the sidelink authorized resources, and re-execute the sending resource selection operation.

14. The method according to claim 13, characterized in that The second preset condition includes at least one of the following: The PSSCH duration falls within the discontinuous reception activation period; The PSCCH duration falls within the discontinuous reception activation period; The SL PRS duration falls within the discontinuous reception activation period.

15. The method according to any one of claims 9 to 14, characterized in that: The sending the SL PRS to the second terminal according to the sidelink granted resources includes: Acquire the interval between the end symbol of the PSSCH and the start symbol of the physical side feedback channel PSFCH according to the PSSCH duration; Determine that the interval satisfies a third preset condition, and send the SL PRS to the second terminal according to the sidelink granted resources.

16. The method according to claim 15, characterized in that The third preset condition includes that the interval between the end symbol of the PSSCH and the start symbol of the PSFCH exceeds a preset interval.

17. The method according to any one of claims 1 to 16, characterized in that: The method further comprises: A media access control packet data unit MAC PDU is acquired based on the sidelink granted resources, and resource information of the SL PRS is determined based on the sidelink granted resources.

18. The method according to claim 17, characterized in that The first terminal includes a SL HARQ entity, and the determining the resource information of the SL PRS based on the sidelink granted resources includes: The first terminal calls a multiplexing and aggregation entity based on the SL HARQ entity to determine resource information of the SL PRS.

19. The method according to claim 17, characterized in that The resource information of the SL PRS includes at least one of a resource identifier and priority information of the SL PRS.

20. The method according to claim 19, characterized in that The method further comprises: A highest priority is selected from the logical channel priority, the media access control control element MAC CE priority and the SL PRS priority, and a priority value corresponding to the highest priority is used as the priority information.

21. The method according to claim 20, characterized in that The method further comprises: The SL HARQ process of the first terminal determines that the priority value of the highest priority is lower than the priority threshold, and sends the SL MAC PDU to the second terminal.

22. The method according to claim 21, characterized in that The method further comprises: The SL HARQ process of the first terminal determines that the priority value of the highest priority is higher than the priority threshold, and sends an uplink UL MAC PDU to the second terminal.

23. The method according to claim 21, characterized in that The method further comprises: The SL HARQ process of the first terminal instructs the physical layer to transmit the SL PRS based on sidelink control information SCI.

24. The method according to any one of claims 1 to 23, characterized in that: The method further comprises: The target resource pool is selected from the shared resource pool or the dedicated resource pool according to the resource pool selection requirement.

25. The method according to claim 24, characterized in that The resource pool selection requirement includes at least one of the following: Bandwidth requirements for SL-PRS; Comb size requirements; SL-PRS duration requirements.

26. The method according to claim 24, characterized in that The resource pool selection requirement is obtained in at least one of the following ways: Provided by the SLPP layer; Determined by the MAC layer.

27. A method for sending a positioning reference signal, characterized in that: The method comprises: Receive the SL PRS sent by the first terminal, and the SL PRS is determined that the first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and when it is determined that resources are allocated to the first terminal from a target resource pool, it is sent according to the sidelink authorized resources on the target resource pool, and the target resource pool includes a shared resource pool and / or a dedicated resource pool.

28. A terminal device, characterized in that: include: The processing module is configured to determine that the first terminal is triggered to transmit a sidelink positioning reference signal SL PRS, and determine to allocate resources to the first terminal from a target resource pool, and obtain a sidelink authorized resource on the target resource pool, wherein the target resource pool includes a shared resource pool and / or a dedicated resource pool; The transceiver module is configured to send the SL PRS to the second terminal according to the side link authorized resources.

29. A terminal device, characterized in that: include: The receiving module is configured to receive the SL PRS sent by the first terminal, and the SL PRS is determined by the first terminal to be triggered to transmit the side link positioning reference signal SL PRS, and when it is determined to allocate resources from the target resource pool to the first terminal, it is sent according to the side link authorized resources on the target resource pool, and the target resource pool includes a shared resource pool and / or a dedicated resource pool.

30. A communication device, characterized in that: include: one or more processors; The communication device is used to execute the method for sending a positioning reference signal according to any one of claims 1 to 27.

31. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the method for sending a positioning reference signal according to any one of claims 1 to 27.

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