Systems and Methods for High-Precision Positioning

Abstract

A system and method for high-precision positioning are presented. A wireless communication device may determine a first information element and a second information element that respectively constitute a path loss reference signal and a spatial relationship of the reference signal for uplink positioning. The wireless communication device may transmit a reference signal based on the first information element and the second information element to a wireless communication node. The method further includes, by the wireless communication device, identifying that the first information element does not exist in a configuration previously transmitted by the wireless communication node, and, by the wireless communication device, selecting N signals as the first information element.

Description

Technical Field

[0001] (Technical Field) The present disclosure generally relates to wireless communication and includes, but is not limited to, systems and methods for high-precision positioning of low-power user equipment (UE).

Background Art

[0002] (Background) The 3rd Generation Partnership Project (3GPP (registered trademark)), a standards organization, is currently promoting the definition of a new radio interface called 5G New Radio (5G NR) and a next-generation packet core network (NG-CN or NGC). 5G NR will have three main components, namely, a 5G access network (5G-AN), a 5G core network (5GC), and user equipment (UE). To facilitate the utilization of different data services and requirements, the elements of the 5GC, also called network functions, are simplified, and some of them are software-based and some are hardware-based, so they can be adapted as needed.

Summary of the Invention

Means for Solving the Problems

[0003] (Summary) The exemplary embodiments disclosed herein are directed to solving one or more of the problems presented in the prior art and providing further features that will be readily apparent by reference to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it is understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those skilled in the art reading this disclosure that various modifications can be made to the disclosed embodiments (including, for example, combinations of features from various disclosed examples, embodiments, and / or implementations) while remaining within the scope of the present disclosure.

[0004] At least one aspect is directed to the following system, method, apparatus, or computer-readable medium. Each wireless communication device (e.g., UE) can determine a first information element (e.g., pathlossReferenceRS-Pos) and a second information element (e.g., SpatialRelationInfoPos) that constitute a path loss reference signal and a spatial relationship of the reference signal for uplink positioning, respectively. The wireless communication device can transmit a reference signal based on the first information element and the second information element to a wireless communication node.

[0005] In some embodiments, the wireless communication device can identify that the first information element does not exist in a configuration previously transmitted by a wireless communication node (last serving gNB). The wireless communication device can select N signals as the first information element. The value of N can be configured by the wireless communication node or reported by the wireless communication device. The value of N can be determined based on several resource sets configured for the wireless communication device or based on the capabilities of the wireless communication device. At least one or more of the N signals can be selected from the same cell. At least one or more of the N signals can come from one cell. For example, if the UE selects signals 1, 2, 3, 4, 5 as its path loss RS, signals 1, 2 may come from cell 1, and signals 3, 4, 5 may come from cell 2.

[0006] In some embodiments, the N signals can each be selected from different cells. The N signals can be selected from N configured cells. In some embodiments, some of the signals may come from the same cell, and the gNB can also configure N for the UE. The wireless communication device can receive N from the wireless communication node. c configured cells. In some embodiments, some of the signals may come from the same cell, and the gNB can also configure N for the UE. The wireless communication device can receive N from the wireless communication node. c for the UE. The wireless communication device can receive N from the wireless communication node. cIt can receive a cell list indicating individual cells. The types of N signals can be configured by a wireless communication node. This type can include one of SSB, PRS, PO, or SIB. The types of N signals can be configured by the wireless communication device itself.

[0007] In some embodiments, the wireless communication device can select N signals based on a criterion regarding the value of the beam measurement quantity configured by the wireless communication device node. The criterion regarding the value of the beam measurement quantity can be an RSRP limit. The wireless communication device can select N signals based on N beams having the highest / lowest average measurement quantity values. b individual beams. N b can be configured by a wireless communication node.

[0008] In some embodiments, the wireless communication device can report the N selected signals to the wireless communication device node. The UE can notify the gNB which signal is selected as the path loss RS instead of the UE transmitting the N selected signals to the gNB.

[0009] In some embodiments, the wireless communication device can identify that a first information element is provided in the configuration transmitted by the wireless communication node. The first information element can be configured by the wireless communication node as one or more reference signals within a reference signal list. At least a part of one or more reference signals can be from the same cell. One or more reference signals can be from different cells respectively. One or more reference signals can each be an SSB or a PRS. The reference signal list can further indicate a criterion regarding the value of the beam measurement quantity. The criterion regarding the value of the beam measurement quantity can be an RSRP limit.

[0010] In some embodiments, the wireless communication device may identify that there is no second information element in the configuration previously transmitted by the wireless communication node (the last serving gNB). The wireless communication device may select K signals as the second information element. The value of K can be configured by the wireless communication node or reported by the wireless communication device. The value of K can be determined based on some resources or resource sets configured for the wireless communication device, or based on the capabilities of the wireless communication device. One or more of the K signals can be selected from the same cell. The K signals can be selected from different cells respectively. The K signals can be selected from the configured K c configured cells. The wireless communication device may receive a cell list indicating K c cells from the wireless communication node.

[0011] In some embodiments, the type of the K signals can be configured by the wireless communication node. This type can include one of SSB, PRS, PO, SIB, or CSI-RS. The type of the K signals can be configured by the wireless communication device itself. The wireless communication device may select the K signals based on a criterion regarding the value of the beam measurement quantity configured by the wireless communication device node. The criterion regarding the value of the beam measurement quantity can be an RSRP limit.

[0012] In some embodiments, the wireless communication device may select the K b signals based on the K beams having the highest / lowest average measurement quantity values. K b can be configured by the wireless communication node. The wireless communication device may report the K selected signals to the wireless communication device node.

[0013] In some embodiments, the wireless communication device may identify that a second information element is provided to a configuration previously transmitted by the wireless communication node. The second information element can be configured by the wireless communication node as one or more reference signals within a spatial relationship list. Some of the one or more reference signals can be from the same cell. The one or more reference signals can be from different cells, respectively. Each of the one or more reference signals can be an SSB, a PRS, or a CSI-RS, respectively. The reference signal list may further indicate a reference regarding the value of the beam measurement quantity. The reference regarding the value of the beam measurement quantity can be an RSRP limit.

[0014] In some embodiments, the wireless communication device may update a first information element within a slot that meets a time limit configured by the wireless communication node. The wireless communication device may update a second information element within a slot that meets a time limit configured by the wireless communication node.

[0015] In some embodiments, a wireless communication device (e.g., a UE) may determine a reference signal for RSRP threshold calculation regarding an increase / decrease in RSRP for time alignment verification. The reference signal can be a path loss RS and / or a path loss reference. The RSRP increase / decrease value can be calculated using the same reference signal within one cell or different reference signals within different cells. The wireless communication device can use the same or different time alignment verifications for positioning sounding reference signal transmissions in different resource sets.

[0016] In some embodiments, a network entity (e.g., LMF, Location Management Function) of the core network may configure time-related information or a PRS instance indicator for a first wireless communication device (e.g., UE) and a second wireless communication device (e.g., PRU), enabling the first wireless communication device and the second wireless communication device to simultaneously measure a PRS instance or DL-PRS. The time-related information can be a list of time slots or a list of slot offsets or a list of time windows. Also, the PRS instance indicator can be a list of periodic sequences and / or repeating sequences.

[0017] In some embodiments, a network entity (e.g., LMF) of the core network may configure time-related information for a second network entity (e.g., gNB) or request the second network entity to do so, enabling the first wireless communication device and the second wireless communication device to simultaneously transmit SRS.

[0018] In some embodiments, a network entity (e.g., gNB) of the core network may trigger / activate a first wireless communication device (e.g., UE) and a second wireless communication device (e.g., PRU) as indicated by time-related information, enabling the first wireless communication device and the second wireless communication device to simultaneously transmit SRS. The time-related information can be a list of time slots or a list of slot offsets or a list of time windows.

Brief Description of the Drawings

[0019] Various exemplary embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely depict exemplary embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the scope, range, or applicability of the present solution. It should be noted that these drawings are not necessarily drawn to scale for clarity and ease of illustration.

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[0039] (Detailed Description) 1. Mobile Communication Technologies and Environments FIG. 1 shows an exemplary wireless communication network and / or system 100 in which the techniques disclosed herein may be implemented, according to one embodiment of the present disclosure. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as the "network 100". Such an exemplary network 100 includes base stations 102 (hereinafter "BS102", also referred to as wireless communication nodes) and user equipment devices 104 (hereinafter "UE104", also referred to as wireless communication devices) that can communicate with each other via communication links 110 (e.g., wireless communication channels), and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 that overlap a geographic area 101. In FIG. 1, BS102 and UE104 are contained within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating in its assigned bandwidth to provide appropriate wireless coverage to its targeted users.

[0040] For example, BS102 may operate in the channel transmit bandwidth assigned to provide appropriate coverage to UE104. BS102 and UE104 may communicate with each other via downlink wireless frames 118 and uplink wireless frames 124, respectively. Each wireless frame 118 / 124 may be further divided into subframes 120 / 127 that may include data symbols 122 / 128. In the present disclosure, BS102 and UE104 are generally described herein as non-limiting examples of "communication nodes" that may implement the methods disclosed herein. Such communication nodes may be capable of performing wireless communication and / or wired communication according to various embodiments of the present solution.

[0041] Figure 2 shows a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some embodiments of the present solution. System 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one exemplary embodiment, system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as wireless communication environment 100 of FIG. 1 as described above.

[0042] System 200 generally includes a base station 202 (hereinafter, “BS202”) and a user equipment device 204 (hereinafter, “UE204”). BS202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, and each module is coupled and interconnected with each other as needed via a data communication bus 220. UE204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, and each module is coupled and interconnected with each other as needed via a data communication bus 240. BS202 communicates with UE204 via a communication channel 250, and the communication channel 250 can be any wireless channel or other medium suitable for transmitting data as described herein.

[0043] As will be understood by those skilled in the art, system 200 may further include any number of modules other than those shown in FIG. 2. Those skilled in the art will understand that the various exemplary blocks, modules, circuits, and processing logics described in connection with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, the various exemplary components, blocks, modules, circuits, and steps are generally described in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software can depend on the particular application and design constraints imposed on the overall system. Those skilled in the art who are proficient in the concepts described herein can implement such functionality in a manner suitable for each particular application, but such implementation decisions should not be construed as limiting the scope of the present disclosure.

[0044] According to some embodiments, UE transceiver 230 may be referred to herein as an "uplink" transceiver 230 that includes an RF transmitter and an RF receiver each having circuitry coupled to antenna 232. Alternatively, a duplex switch (not shown) may couple the uplink transmitter or receiver to the uplink antenna in a time-division duplexing manner. Similarly, according to some embodiments, BS transceiver 210 may be referred to herein as a "downlink" transceiver 210 that includes an RF transmitter and an RF receiver each having circuitry coupled to antenna 212. Alternatively, a downlink duplex switch may couple the downlink transmitter or receiver to downlink antenna 212 in a time-division duplexing manner. The operations of the two transceiver modules 210 and 230 may be temporally coordinated such that the downlink transmitter is coupled to downlink antenna 212 at the same time that the uplink receiver circuitry is coupled to uplink antenna 232 for receiving transmissions over wireless transmission link 250. Conversely, the operations of the two transceivers 210 and 230 may be temporally coordinated such that the uplink transmitter is coupled to uplink antenna 232 at the same time that the downlink receiver is coupled to downlink antenna 212 for receiving transmissions over wireless transmission link 250. In some embodiments, there is tight time synchronization with a minimum guard time during changes in the duplex direction.

[0045] UE transceiver 230 and base station transceiver 210 communicate via a wireless data communication link 250 and are configured to cooperate with a suitably configured RF antenna array 212 / 232 that can support a specific wireless communication protocol and modulation scheme. In some exemplary embodiments, UE transceiver 210 and base station transceiver 210 are configured to support industry standards such as Long-Term Evolution (LTE) and emerging 5G standards. However, it is understood that the present disclosure is not necessarily limited to specific standards and associated protocols in its application. Rather, UE transceiver 230 and base station transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0046] According to various embodiments, BS202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femtocell, or a picocell. In some embodiments, UE204 may be embodied in various types of user devices such as a mobile phone, smartphone, personal digital assistant (PDA), tablet, laptop computer, wearable computing device, and the like. Processor modules 214 and 236 may be implemented or realized using a general-purpose processor, associative memory, digital signal processor, application specific integrated circuit, field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. Thus, the processor may be realized as a microprocessor, controller, microcontroller, state machine, and the like. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors cooperating with a digital signal processor core, or any other such configuration.

[0047] Furthermore, the steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in firmware, in a software module executed by processor modules 214 and 236 respectively, or in any practical combination thereof. Memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 can be coupled to processor modules 210 and 230 respectively, such that processor modules 210 and 230 can read information from and write information to memory modules 216 and 234 respectively. Memory modules 216 and 234 may also be integrated into their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during the execution of instructions to be executed by processor modules 210 and 230 respectively. Memory modules 216 and 234 may also each include a non-volatile memory for storing instructions to be executed by processor modules 210 and 230 respectively.

[0048] The network communication module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of base station 202 that enable bidirectional communication between base station transceiver 210 and other network components and communication nodes configured to communicate with base station 202. For example, network communication module 218 may be configured to support Internet or WiMAX traffic. In a typical arrangement, but not limited to, network communication module 218 provides an 802.3 Ethernet (registered trademark) interface so that base station transceiver 210 can communicate with a conventional Ethernet (registered trademark)-based computer network. Thus, network communication module 218 may include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). As used herein, the terms "configured to" and "configured to do" and their conjugations with respect to a specified operation or function refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform the specified operation or function.

[0049] The Open Systems Interconnection (OSI) model (referred to herein as the "Open Systems Interconnection model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that are open to interconnection and communication with other systems. This model is divided into seven sub-components or layers, each of which represents a conceptual set of services provided to its upper and lower layers. The OSI model also defines a logical network and effectively describes computer packet transfer by using different layer protocols. The OSI model is also sometimes referred to as the seven-layer OSI model or the seven-layer model. In some embodiments, the first layer can be the physical layer. In some embodiments, the second layer can be the Medium Access Control (MAC) layer. In some embodiments, the third layer can be the Radio Link Control (RLC) layer. In some embodiments, the fourth layer can be the Packet Data Convergence Protocol (PDCP) layer. In some embodiments, the fifth layer can be the Radio Resource Control (RRC) layer. In some embodiments, the sixth layer can be the Non-Access Stratum (NAS) layer or the Internet Protocol (IP) layer, and the seventh layer is other layers.

[0050] To enable those skilled in the art to make and use this solution, various exemplary embodiments of this solution are described below with reference to the accompanying drawings. As will be apparent to those skilled in the art, after reading this disclosure, various changes or modifications can be made to the examples described herein without departing from the scope of this solution. Therefore, this solution is not limited to the exemplary embodiments and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein is merely an exemplary approach. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged while remaining within the scope of this solution. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and this solution is not limited to the specific order or hierarchy presented unless otherwise specified.

[0051] 2. Systems and Methods for High-Precision Positioning of Low-Power User Equipment (UE) In recent years, many positioning technologies have been proposed in 5G-compatible networks to achieve high-precision positioning of UEs. To reduce the power consumption of low-power high-precision positioning (LPHAP) devices, a UE can enter a sleep state when it is not receiving or processing system signals or positioning signals during a positioning procedure. When the UE moves into the coverage of another cell, cell reselection is performed, and the UE may have to reach RRC_CONNECTED in order to receive a new sounding reference signal (SRS) configuration for positioning incorporated in the RRC reconfiguration. The most significant UE power consumption can result from power state transitions (e.g., from the sleep state to the active state). Frequent state transitions can cause substantial power consumption. This disclosure introduces several solutions for reducing the power consumption of UEs without degrading positioning performance.

[0052] In the UL positioning procedure, the UE may obtain an SRS configuration for new positioning when the UE moves to a new cell or when the previous configuration is invalid (e.g., the associated timer has expired). In the UL positioning procedure, the UE may establish an RRC connection when receiving or updating the SRS configuration, which consumes power for the LPHAP device. Therefore, the SRS configuration for positioning in the valid area including multiple cells can be implemented. More specifically, the UE may adopt a single set of SRS configurations for positioning when the UE is within the valid area. However, some of the SRS configuration parameters, such as the spatial relationship, path loss RS, p0, and alpha, may not be applicable across other cells.

[0053] When the UE is not provided with pathlossReferenceRS-Pos in the RRC_CONNECTED state, the UE may calculate the required transmission power using the RS resources obtained from the SSB of the serving cell. However, in the case of LPHAP, it can be expected that the UE will not frequently enter the RRC_CONNECTED state. If the UE is in the RRC_INACTIVE state and determines that it cannot accurately determine the SRS transmission power, the UE may not transmit the SRS in the configured SRS resource set. Furthermore, it can be assumed that a field is not required for pathlossReferenceRS-Pos, which means that the UE can maintain the current value when receiving a message without that field. However, when the UE moves to a new cell while maintaining the previous pathlossReferenceRS-Pos configuration, the UE cannot accurately calculate the SRS transmission power, and the SRS resource cannot be transmitted normally. Therefore, the pathlossReferenceRS-Pos configured by the last serving gNB may be invalid for the SRS transmission power determination of the UE that is not in the RRC_CONNECTED state when camping on a new cell.

[0054] The spatial relationship between the reference signal and the target SRS for positioning can be configured in SRS-SpatialRelationInfoPos. The UE can transmit the target SRS resource(s) within the SRS resource set according to the spatial relationship. In the SpatialRelationInfoPos IE, the spatial relationship can be the synchronization signal block (SSB) / channel state information reference signal (CSI-RS) / sounding reference signal (SRS) in the serving cell, or the SSB / positioning reference signal (PRS) of a neighboring cell. When the UE moves to a new cell, the spatial relationship may be invalid.

[0055] Figure 3 illustrates the exemplary differences in spatial relationships in sounding reference signal (SRS) transmission according to some embodiments of the present disclosure. As shown in Figure 3, the UE may receive a spatial relationship configuration from the last serving cell before its movement, and the SRS can be transmitted in the configured beam direction. If the UE moves to another cell but the spatial relationship remains unchanged, the transmitted SRS may not be detected by the receiver. Therefore, the spatial relationship information configured by the last serving gNB may become invalid when the UE camps on a new cell. In the present disclosure, some solutions regarding potential enhancements of LPHAP considering the above-described problems can be implemented.

[0056] Implementation Example 1: This implementation example provides enhancements to signaling and UE behavior when pathlossReferenceRS-Pos does not exist in the SRS configuration for positioning.

[0057] The UE can select N signals with high / low reference signal received power (RSRP) as pathlossReferenceRS-Pos for positioning SRS transmission. For example, the path loss reference signal (RS) of the SRS for positioning is a received signal having the values of the N highest / lowest beam measurement quantities within the valid area. N can be configured by the gNB or reported by the UE. The exact value of N can be determined based on the number of resource sets configured for the UE or in line with the UE's capabilities. As shown in FIGS. 4 and 5, in the case of the UE, the N selected signals may be within the same cell (one cell can include two or more path loss RSs for the UE), or may be in different cells (at most one signal can be selected as the path loss RS within a cell). All selected signals can be SSBs. In these two examples, the value of N configured / reported may be equal to 3, and the SSB with the highest RSRP can be selected as the path loss RS. In FIG. 4, two path loss RSs can be selected from cell 1 (e.g., SSB1-1 and SSB1-2), and one path loss RS is selected from cell 2 (e.g., SSB2-1). In FIG. 5, all these path loss RSs can be selected from different cells (e.g., SSB1-1 from cell 1, SSB2-1 from cell 2, and SSB3-1 from cell 3). When the UE selects path loss RSs from the same or different cells, the gNB can configure the number of cells (N c ) that the UE can select from. Under this condition, the UE can select path loss RSs from N c cells. More specifically, the gNB can configure a path loss RS cell list for the UE. The cell list may include the phycellID of these cells. The UE can select path loss RSs from the cells within the configured path loss cell list. The path loss cell list may or may not be a subset of the cells within the valid area.

[0058] After the selection of the path loss RS, the UE can calculate the transmission power for positioning SRS in the RRC_INACTIVE state and may transmit the SRS for positioning with the calculated power using the selected path loss RS. In this way, the gNB that transmits the selected path loss RS can receive the SRS for positioning with appropriate power and can further improve the positioning performance. When the UE selects N signals with higher RSRP, the gNB near the UE can receive the SRS for positioning with appropriate Rx power. Conversely, when the UE selects signals with lower RSRP, the gNB far from the UE can receive the SRS for positioning with appropriate Rx power.

[0059] Alternatively, the gNB can also configure the type of the selected path loss RS. The path loss RS type can include one or more of the following options: Synchronization Signal Block (SSB), Positioning Reference Signal (PRS), Paging Opportunity (PO), or System Information Block (SIB). When this type field is configured for the UE, the UE can select a reference from the configured type. If this type field does not exist, the type of path loss RS selection can be up to the UE implementation.

[0060] Alternatively, the gNB can also configure the RSRP threshold of the UE when the UE is selecting the path loss RS. The UE can only select signals with RSRP greater than (when selecting high RSRP RS) / less than (when selecting low RSRP RS) the configured threshold.

[0061] From another perspective, the UE can select the path loss RS for the positioning SRS as a reference signal with Nb beams having the highest / lowest average measurement values. The value of the average measurement can be the linear / non-linear average of the measured reference signal, and Nb can be configured by the gNB. Alternatively, the value of the beam measurement can also exceed / fall below the configured threshold. The threshold of the linear / non-linear average can be configured by the gNB. Alternatively, the gNB can also configure a criterion regarding the value of the UE's beam measurement, such as an RSRP limit. The UE can select the path loss RS based on the beam measurement limit. More specifically, the UE can select a signal with a smaller / larger RSRP value from signals that meet the configured limit. In this way, the TRP / gNB far away from the UE within the effective area can also receive the desired SRS.

[0062] Also, the UE can select a signal with a larger beam measurement value or RSRP as its path loss RS, calculate the transmission power with a specific power offset, and ensure that the TRP / gNB far away from the UE can also receive the desired SRS.

[0063] Alternatively, the UE can also select the path loss RS from several cells. The reference signal within the selected cell can have a higher / lower average RSRP. For example, the UE can measure the RSRP of the SSB with index k from different cells. avg(RSRP k, cell i) can represent the average RSRP of the SSB k in the time domain transmitted in cell i. The UE can select the SSB from a cell where its avg(RSRP k, cell i) is greater than or less than a given threshold as the path loss RS.

[0064] After finishing the RSRP measurement of these signals and selecting the desired path loss RS, the UE can report the selected path loss RS to the gNB. If the selected path loss RS includes an SSB, the reported pathlossReferenceRS-Pos may include at least one of the following IEs: PhysCellId: Physical cell identification information of the corresponding path loss RS; and / or SSB-Index: Index of the SSB of the corresponding path loss RS.

[0065] If the selected reference signal(s) for path loss includes a PRS, the reported pathlossReferenceRS-Pos may include at least one of the following IEs: dl-PRS-ID: UE-specific TRP ID that transmits the corresponding path loss RS; dl-PRS-ResourceSetId: PRS-ResourceSet ID of the PRS resourceSet that includes the corresponding path loss RS; and / or dl-PRS-ResourceId: PRS-Resource ID of the PRS resource corresponding to the path loss RS.

[0066] Alternatively, the UE can report together with the signal for which the RSRP was measured. The reported measurement report of the SSB may include at least one of the following IEs: PhysCellId: Physical cell identification information of the received signal; SSB-Index: Index of the SSB of the received signal; and / or RSRP of the received signal.

[0067] The reported measurement report of the PRS may include at least one of the following IEs: dl-PRS-ID: UE-specific TRP ID that transmits the received signal; dl-PRS-ResourceSetId: PRS-ResourceSet ID of the PRS resourceSet that includes the received signal; dl-PRS-ResourceId: PRS-Resource ID of the PRS resource corresponding to the received signal; and / or RSRP of the received signal. The gNB can further configure the path loss RS for the UE based on the reported measurement results.

[0068] After the selection / configuration of the path loss RS, the UE can transmit positioning SRS for different resource sets using the calculated transmission power based on the selected / configured path loss RS. For example, as illustrated in FIG. 4 (FIG. 5), the UE may transmit SRS using the path loss RS SSB1-1 in resource set 1 (e.g., SSB1-1), and may transmit SRS using the path loss RS SSB1-2 in resource set 2 (e.g., SSB2-1), and may transmit SRS using the path loss RS SSB2-1 in resource set 3 (e.g., SSB3-1).

[0069] In this method, the UE can select its path loss RS when camping on different cells within the SRS configuration valid area, and the selected path loss RS can provide a reasonable basis for the transmission power calculation of the positioning SRS. In this way, the power consumption can be significantly reduced for better transmission power estimation while maintaining high positioning accuracy, and the UE does not need to enter the RRC_CONNECTED state to obtain the updated path loss RS when the UE moves within the valid area.

[0070] Implementation Example 2: This implementation example provides enhancements to the signaling and UE behavior when pathlossReferenceRS-Pos is provided for SRS configuration for positioning.

[0071] In the case of SRS configuration in the active area, the last serving gNB can configure a path loss RS list for the UE. The configured path loss RS list may include one or more reference signals for the UE. The UE can select one or more of these reference signals as the path loss RS for positioning SRS transmission. The signals in the configured path loss RS list may come from different cells within the active area or from the same cell within the active area. The signals in the configured path loss RS list can be SSB, PRS, or other reference signals. In this way, the gNB can recognize the possible path loss RS that the UE will choose, and the UE can select a relatively appropriate path loss RS for positioning SRS transmission.

[0072] From another perspective, when the validity criteria for the path loss RS are not met, the validity criteria for the path loss RS and UE behavior can be considered. The gNB can configure the RSRP threshold of the path loss RS list. When the measured RSRP of the reference signal from the list is lower than the threshold, the UE can consider / regard this path loss RS as invalid. A request for path loss RS configuration update may be required. In this way, the path loss RS can be updated in a timely manner when the UE enters a new active area.

[0073] Alternatively, the UE can also update its path loss RS based on the selection / configuration of the spatial relationship. More specifically, the UE can consider the same reference signal in terms of its spatial relationship and path loss RS.

[0074] Implementation Example 3: This implementation example provides enhanced signaling and UE behavior when SpatialRelationInfoPos does not exist in the SRS configuration for positioning.

[0075] The UE can select K signals with high / low RSRP as SpatialRelationInfoPos for positioning SRS transmission. For example, the spatial relation of the SRS for positioning is the received signal with the values of the K highest / lowest beam measurement quantities within the valid area. K can be configured by the gNB or reported by the UE. The exact value of K can be determined based on the number of resources configured for the UE or in line with the UE's capabilities. In the case of the UE, the selected K signals can be in the same cell (one cell can include two or more spatial relation signals for the UE), or can be in different cells (at most one signal can be selected as the spatial relation signal within the cell), and all the selected signals are SSBs. The detailed example can be the same as the example of the path loss RS (Implementation Example 1). When the UE selects spatial relations from the same or different cells, the gNB can configure the number of cells (K c ) that the UE can select from. Under this condition, the UE can select spatial relations from Kc cells. More specifically, the gNB can configure a spatial relation list for the UE. The cell list can include the phycellID of these cells. The UE can select spatial relations from the cells within the configured spatial relation cell list. The spatial relation cell list may or may not be a subset of the cells within the valid area.

[0076] After the selection of the spatial relation, the UE can transmit the SRS for positioning together with the selected spatial relation signal in the RRC_INACTIVE state. In this way, the TRP (transmission and reception point) can receive the positioning SRS with an appropriate beam and can further improve the positioning accuracy. When the UE selects K signals with higher RSRP, the gNB near the UE can receive the SRS for positioning with an appropriate Rx beam. Conversely, when the UE selects a signal with lower RSRP, the gNB far from the UE can receive the SRS for positioning with an appropriate Rx beam.

[0077] Alternatively, the gNB can also configure the type of spatial relationship selected. The spatial relationship type can include one or more of the following options: SSB, PRS, PO, CSI-RS, or SIB. When this type field is configured for the UE, the UE can select a reference signal from the configured type. If this type field does not exist, the type of spatial relationship selection can be up to the UE implementation.

[0078] Alternatively, the gNB can also configure the RSRP threshold of the UE when the UE selects a spatial relationship. The UE can select a signal with a higher (when selecting an RS with a high RSRP) / lower (when selecting an RS with a low RSRP) signal than the configured RSRP threshold.

[0079] From another perspective, the UE can select the spatial relationship signal for the positioning SRS as the reference signal with the highest / lowest average measurement value among K b beams. The value of the average measurement can be the linear / non-linear average of the measured reference signal, and K b can be configured by the gNB. Alternatively, the value of the beam measurement can also exceed / fall below the configured threshold. The threshold of the linear / non-linear average can be configured by the gNB. Alternatively, the gNB can also configure a criterion for the value of the UE's beam measurement, such as an RSRP limit. The UE can select a spatial relationship based on the limit. More specifically, the UE can select the signal with the minimum RSRP value from the signals that meet the configured limit. In this way, the TRP / gNB far away from the UE within the effective area can also receive the desired SRS with the selected spatial relationship.

[0080] Alternatively, the UE can also select a spatial relationship from several cells. The reference signals in the selected cells can be assumed to have a higher / lower average RSRP. For example, the UE can measure the RSRP of the SSB with index k from different cells. avg(RSRP k, cell i) can represent the average RSRP of the SSB k in the time domain transmitted in cell i. The UE can select the SSB from the cell where its avg(RSRP k, cell i) is greater than or lower than a given threshold as its spatial relationship.

[0081] After finishing the RSRP measurement of these signals and selecting the desired spatial relationship, the UE can report the selected spatial relationship to the gNB. If the selected spatial relationship signal(s) includes the SSB, the reported SRS-SpatialRelationInfoPos may include the following IEs: PhysCellId: Physical cell identification information of the corresponding spatial relationship; and / or SSB-Index: Index of the SSB of the corresponding spatial relationship.

[0082] If the selected signal(s) includes the PRS, the reported SRS-SpatialRelationInfoPos may include the following IEs: dl-PRS-ID: UE-specific TRP ID that transmits the corresponding spatial relationship; dl-PRS-ResourceSetId: PRS-ResourceSet ID of the PRS resourceSet including the corresponding spatial relationship; and / or dl-PRS-ResourceId: PRS-Resource ID of the PRS resource corresponding to the spatial relationship.

[0083] Alternatively, the UE can report together with the signal for which the RSRP is measured. The reported measurement report of the SSB may include the following IEs: PhysCellId: Physical cell identification information of the received signal; SSB-Index: Index of the SSB of the received signal; and / or RSRP of the received signal.

[0084] The reported measurement reports of PRS may include the following IEs: dl-PRS-ID: the TRP ID specific to the UE that transmits the received signal; dl-PRS-ResourceSetId: the PRS-ResourceSet ID of the PRS resourceSet that includes the received signal; dl-PRS-ResourceId: the PRS-Resource ID of the PRS resource corresponding to the received signal; and / or the RSRP of the received signal.

[0085] The gNB can further configure the spatial relation for the UE based on the reported measurement results. Alternatively, the gNB can also configure the spatial relation for the UE based on the path loss RS configuration. Alternatively, the UE can also select the spatial relation based on the path loss RS configuration (if the path loss RS is configured), or based on the path loss RS selection (as listed in Implementation Example 1).

[0086] Figure 6 illustrates an example in which a UE applies different spatial relation signals according to some embodiments of the present disclosure. As shown in Figure 6, the UE can use the evaluated / configured spatial relation to transmit SRS for positioning within different resources. In this method, the UE can select its spatial relation when camping on different cells within the effective area of the SRS configuration for positioning, and the selected spatial relation can provide a reasonable basis for the transmission of the positioning SRS.

[0087] Implementation Example 4: This implementation example provides enhanced signaling and UE behavior when SpatialRelationInfoPos is provided in the SRS configuration for positioning.

[0088] In the case of SRS configuration in the active area, the last serving gNB can configure a spatial relation list for the UE. The configured spatial relation list may include one or more reference signals for the UE. The UE can select one or more of these reference signals as the spatial relation for positioning SRS transmission. The signals in the configured spatial relation list may come from different cells within the active area or from the same cell within the active area. The signals in the configured spatial relation list can be SSB, PRS, CSI-RS, or other reference signals. In this way, the gNB can recognize the possible spatial relations that the UE will choose, and the UE can select a relatively appropriate spatial relation for positioning SRS transmission.

[0089] From another perspective, when it is determined that the validity criteria for the spatial relation are not met, the validity criteria for the spatial relation and UE behavior can be considered. The gNB can configure the RSRP threshold of the spatial relation list. If the measured RSRP of the reference signal from the list is lower than the threshold, the UE can consider this spatial relation invalid. The request for spatial relation configuration update can be utilized. In this way, the spatial relation can be updated in a timely manner when the UE enters a new active area.

[0090] The path loss RS and the spatial relation may share the same RSRP threshold or use different RSRP thresholds. Considering this, the gNB can configure a common RSRP threshold for both the path loss RS and the spatial relation. Alternatively, the gNB can further configure an indicator to specify whether the configured RSRP threshold can be shared for both the path loss RS and the spatial relation. If the configured RSRP threshold can be shared for both the path loss RS and the spatial relation, the indicator can be set to 1, and if not, the indicator can be set to 0.

[0091] Implementation Example 5: This implementation example provides path loss RS and a time limit for spatial relationship change / update opportunities.

[0092] The gNB can configure a time limit or granularity M1 for UE path loss RS change opportunities for each resource set. Alternatively, different resources (sets) can share the same time limit or granularity. The configuration can be included in the RRC release information. When the UE applies the configured time limit or granularity M1, it indicates / means that the UE can change the path loss RS only in some slots.

[0093] For example, when M1 = 4, the UE can change the path loss RS only when the slot number is an integer multiple of 4. FIG. 7 illustrates an example of UE path loss reference signal (RS) update according to some embodiments of the present disclosure. As shown in FIG. 7, the UE may detect a change in slot 6, and the UE may use a different path loss RS to transmit its positioning SRS. In such a case, the UE may delay the path loss RS update, for example, update its path loss RS in slot 8.

[0094] The gNB can configure the same or different time limits or granularity M1 for different UEs within the effective area. FIG. 8 illustrates an example of the path loss reference signal (RS) update granularity of the same UE according to some embodiments of the present disclosure. As shown in FIG. 8, the configured M1 for both UE1 and UE2 can be the same, and UE1 and UE2 can update the path loss RS in the same time slot.

[0095] FIG. 9 illustrates an example of the path loss reference signal (RS) update granularity of different UEs according to some embodiments of the present disclosure. FIG. 9 shows the details of different M1 configurations. For example, the configured M1 of UE1 is 4, and the configured M1 of UE2 is 5. UE1 and UE2 can detect changes in the same time slot, but the update behavior can be executed in different slots. For example, UE1 updates in slot 8, and UE2 updates in slot 10.

[0096] Alternatively, different UEs can share the same starting point in the time domain or use different starting points. FIG. 10 illustrates an example in which UEs apply different starting points to path loss reference signal (RS) updates according to some embodiments of the present disclosure. FIG. 10 shows a case where two UEs use different starting points. When UEs use different starting points for path loss RS updates, the starting point in the time domain can be the time slot when the UE enters the coverage of the SRS configuration valid area.

[0097] Similarly, the gNB can configure a time limit or granularity M2 for the UE's spatial relationship change opportunity for each resource. Alternatively, different resources can share the same time limit granularity. The detailed change opportunities of the spatial relationships of different UEs can share the same M2 or use different M2s.

[0098] The path loss RS and the spatial relationship may share the same change opportunity or different change opportunities. Considering this, the gNB can configure a common M for both the path loss RS and the spatial relationship. Alternatively, the gNB can further configure an indicator that specifies whether the configured M can be shared for both the path loss RS and the spatial relationship. When the configured RSRP threshold can be shared for both the path loss RS and the spatial relationship, the indicator can be set to 1; otherwise, the indicator can be set to 0. In this way, the TRP can recognize when the UE can switch its path loss RS and / or spatial relationship, and further improve the efficiency of receiving and decoding the SRS signal for positioning.

[0099] Implementation Example 6: RRC may configure at least one of the following parameters for the verification of SRS transmission in RRC_INACTIVE: inactivePosSRS-RSRP-ChangeThreshold: the RSRP threshold for the increase / decrease of RSRP for time alignment verification. The timing advance (TA) of the uplink SRS transmission for the UE may become invalid when the volatility of the path loss RS RSRP is greater than a configured parameter, for example, inactivePosSRS-RSRP-ChangeThreshold. In the following discussion, this threshold is denoted as R th When the path loss RS configured in SRS-Config or the path loss RS selected by the UE (as listed in Implementation Example 1) is taken as the RSRP change threshold verification, the UE stores the RSRP of the path loss RS and may denote it as R p As the UE moves, the RSRP may change with the distance between the UE and the TRP. The instantaneous value of the RSRP at time t can be denoted as R t If the difference between R t and R p is greater than the configured threshold (for example, |R t -R p |>R th ), the UE may stop transmitting the SRS.

[0100] The RSRP of the path loss RS may change rapidly when the UE moves, especially when the UE camps on a new cell. Furthermore, the path loss RS configuration may also become invalid when the UE camps on a new cell (as exemplified in the previous embodiment), and R tIt can be specified whether it refers to the path loss RS of the previous cell or the path loss RS of the new cell. If the TA validity criterion is not met (inactivePosSRS-TimeAlignmentTimer has expired or the RSRP difference of the RS exceeds inactivePosSRS-RSRP-ChangeThreshold), the UE may stop transmitting the SRS. Therefore, the TA validity criterion may be different for UEs in the RRC_INACTIVE state across multiple cells. The present disclosure proposes some solutions for the TA verification criterion when taking the path loss RS as the RSRP change threshold basis.

[0101] Case 1: When transmitting the SRS, the UE may select one path loss RS for different SRS resource sets.

[0102] FIG. 11 illustrates an exemplary inactivePosSRS-RSRP-ChangeThreshold calculation diagram in the case of selecting one path loss reference signal (RS) according to some embodiments of the present disclosure. As shown in FIG. 11, at time t0, the UE may take the path loss RS_1 as its path loss RS, and the stored RSRP of the path loss RS_1 at time t0 is R p0 is. When the UE moves to the coverage of another cell at time t1, the UE may update its path loss RS to the path loss RS_2. The RSRP of the path loss RS_2 at time t1 can be R t1 and the RSRP of the path loss RS_1 at time t1 can be R p1 For the definition of the RSRP change threshold, the following options can be considered.

[0103] Option 1: The UE may calculate the RSRP change details using the same path loss RS. For example, the RSRP change refers to the difference between R p0 and R p1 These two values may refer to the RSRP of the path loss RS_1 at different times. R p0 and R p1is greater than a configured threshold difference, e.g., |R p0 -R p1 | > R th In this case, the UE may stop transmitting the SRS. In this option, the adopted RSRP may refer to the same path loss RS. The RSRP change details can better reflect the movement of the UE.

[0104] Option 2: The UE may calculate the RSRP change details using the updated path loss RS selection / configuration. For example, the RSRP change is the difference between R p0 and R t1 These two values may refer to the RSRP of the path loss RS_1 at time t0 and the path loss RS_2 at time t1. R p0 and R t1 is greater than a configured threshold difference, e.g., |R p0 -R t1 | > R th In this case, the UE may stop transmitting the SRS. In this option, the adopted RSRP may refer to the updated path loss RS.

[0105] Case 2: When transmitting the SRS, the UE may select different path loss RSs for different SRS resource sets.

[0106] FIG. 12 illustrates an exemplary inactivePosSRS-RSRP-ChangeThreshold calculation diagram in the case of selecting a plurality of path loss reference signals (RSs) according to some embodiments of the present disclosure. As shown in FIG. 12, the UE can be configured using SRS resource sets for two positioning. At time t0, the path loss RSs of these two sets can be the path loss RS_1 and the path loss RS_2, respectively. The UE may take the path loss RS_1 and the path loss RS_2 as its path loss RS for different SRS resource sets. The stored RSRPs of the path loss RS_1 and the path loss RS_2 (at time t0) are R p1 and R p2It is possible. When the UE moves to the coverage of another cell at time t1, the UE can update its path loss RS as path loss RS_3 and path loss RS_4. The RSRP of path loss RS_3 and path loss RS_4 at time t1 is R t3 and R t4 and the RSRP of path loss RS_1 and path loss RS_2 at time t1 is R t1 and R t2 It is possible. For the definition of the RSRP change threshold, the following options can be considered.

[0107] Option 1: The UE may calculate the RSRP change details using the same path loss RS. For example, the RSRP change of resource set 1 can refer to the difference between R p1 and R t1 and the RSRP change of resource set 2 can refer to the difference between R p2 and R t2 .

[0108] On the other hand, the UE can transmit SRS separately in different resource sets. For example, if |R p1 -R t1 |>R th , the UE can stop transmitting SRS in resource set 1, and if |R p2 -R t2 |>R th , the UE can stop transmitting SRS in resource set 2. The same method can be used when the UE is composed of more resource sets. Alternatively, the gNB / LMF can configure different RSRP change thresholds R th1 , R th2 , …, R thn for different resource sets. n can be the number of resource sets configured for the UE.

[0109] On the other hand, the UE, for example, if |R p1 -R t1 |>R th , or if |R p2 -R t2 |>R thIn this case, SRS can be transmitted in different SRS resource sets with the same threshold validity criterion. The UE may stop transmitting SRS in both resource sets.

[0110] From another perspective, the UE can transmit SRS in different SRS resource sets based on the average RSRP change. Specifically, the UE can store the RSRP as the average of the path loss RS of different resource sets. For example, the stored RSRP in Figure 12 is (R p1 +R p2 ) / 2, which can be denoted as R pa . The RSRP of the path loss RS_1 and the path loss RS_2 at time t1 is (R t1 +R t2 ) / 2, which can be denoted as R ta . If |R pa -R ta |>R th , the UE may stop transmitting SRS in both resource sets.

[0111] Option 2: The UE may calculate the RSRP change details using the updated path loss RS selection / configuration. For example, the RSRP change of resource set 1 may refer to the difference between R p1 and R t3 , and the RSRP change of resource set 2 may refer to the difference between R p2 and R t4 .

[0112] The UE can transmit SRS separately in different resource sets, for example, if |R p1 -R t3 |>R th . The UE may stop transmitting SRS in resource set 1. If |R p2 -R t4 |>R th , the UE may stop transmitting SRS in resource set 2. On the other hand, the UE can transmit SRS with the same threshold validity criterion. For example, if |R p1 -R t3 |>R th or |R p2 -Rt4 |>R th In this case, the UE may stop transmitting SRS on both resource sets.

[0113] From another perspective, the UE can transmit SRS on different SRS resource sets based on the average RSRP change. Specifically, the UE can store the RSRP as the average of the path losses RS_1 and RS_2 at time t0. For example, the stored RSRP can be (R p1 +R p2 ) / 2, denoted as R pa . The RSRP of the path losses RS_3 and RS_4 at time t1 can be (R t3 +R t4 ) / 2, denoted as R tan . If |R pa -R tan |>R th In this case, the UE may stop transmitting SRS on both resource sets.

[0114] In this way, the UE can specify a detailed path loss RS change threshold determination process and execute an appropriate SRS transmission operation when the path loss RS can be updated.

[0115] In some embodiments, the path loss RS can serve two roles, for example, (1) as a reference signal for TA RSRP change threshold definition, and (2) for SRS transmission power control.

[0116] The following figures provide optional SRS configurations on the UE side. Figure 13 illustrates an example of the sounding reference signal (SRS) configuration of a UE in an effective area according to some embodiments of the present disclosure. As shown in Figure 13, the UE can transmit SRS for positioning on different resource sets in different directions. For example, in this example, resource set 1 may mainly be for cell 1, and resource set 2 may be for cell 2.

[0117] Detailed timing advance (TA), RSRP threshold, path loss RS, and spatial relationship can be shown in FIG. 14. The UE can select or be composed of different path loss RS / TA / TA RSRP change thresholds within different resource sets. The spatial relationship can be selected / configured for each SRS resource. FIG. 14 illustrates an example of the sounding reference signal (SRS) configuration of the UE according to some embodiments of the present disclosure.

[0118] Alternatively, the path loss RS can also be bound to the spatial relationship as shown in FIG. 15. In the above-described options, different positioning resource sets can be composed of the same path loss RS, TA, and TA RSRP thresholds. FIG. 15 illustrates an example of the sounding reference signal (SRS) configuration of the UE according to some embodiments of the present disclosure.

[0119] Implementation Example 7: As a supplement to Implementation Example 6, this implementation example provides a definition of the RSRP change threshold when the UE uses the measured SSB as its path loss reference. The path loss reference can be different from the path loss RS configured in SRS-Config. In the following discussion, the threshold configured in inactivePosSRS-RSRP-ChangeThreshold is R th and can be denoted as such.

[0120] Under this condition, the UE can store the RSRP of the measured path loss reference. The path loss reference is the SSB measured by the UE and can be denoted as R p When the UE moves, the RSRP may change with the distance between the UE and the TRP, and the instantaneous value of the RSRP at time t can be denoted as Rt. R t and R p The difference between and R t -R p |>R thIn this case, the UE may stop transmitting the SRS. This implementation example proposes several solutions for the TA verification criteria when the UE takes the path loss criteria measured based on the RSRP change threshold.

[0121] Case 1: When transmitting the SRS, the UE may select one path loss criterion for different SRS resource sets.

[0122] FIG. 16 illustrates an exemplary inactivePosSRS-RSRP-ChangeThreshold calculation diagram in the case of selecting one path loss criterion according to some embodiments of the present disclosure. As shown in FIG. 16, at time t0, the UE takes path loss criterion_1 as its path loss criterion, and the stored RSRP of path loss criterion_1 at time t0 is R p0 . When the UE moves to the coverage of another cell at time t1, the UE may update its path loss criterion to path loss criterion_2. The RSRP of path loss criterion_2 at time t1 can be denoted as R t1 , and the RSRP of path loss criterion_1 at time t1 can be denoted as R p1 . For the definition of the RSRP change threshold, the following options can be considered.

[0123] Option 1: The UE may calculate the RSRP change details using the same path loss criterion. For example, the RSRP change may refer to the difference between R p0 and R p1 . These two values may refer to the RSRP of path loss criterion_1 at different times. If the difference between R p0 and R p1 is greater than the threshold formed, for example, |R p0 - R p1 | > R th , the UE may stop transmitting the SRS. In this option, the adopted RSRP may refer to the same path loss criterion, and the RSRP change details can better reflect the movement of the UE.

[0124] Option 2: The UE may calculate the RSRP change details using the updated path loss criteria. For example, the RSRP change may refer to the difference between R p0 and R t1 These two values may refer to the RSRP of path loss criteria_1 at time t0 and path loss criteria_2 at time t1. R p0 and R t1 If the difference between and is greater than a configured threshold, for example |R p0 -R t1 |>R th the UE may stop transmitting the SRS. In this option, the adopted RSRP may refer to the updated path loss criteria.

[0125] Case 2: When transmitting the SRS, the UE may select different path loss criteria for different SRS resource sets.

[0126] FIG. 17 illustrates an exemplary inactive Pos SRS-RSRP-Change Threshold calculation diagram in the case of selecting multiple path loss criteria according to some embodiments of the present disclosure. As shown in FIG. 17, the UE may be configured using SRS resource sets for two positioning. At time t0, the path loss criteria for these two sets may be path loss criteria_1 and path loss criteria_2, respectively. The UE may take path loss criteria_1 and path loss criteria_2 as its path loss criteria for different SRS resource sets, and the stored RSRPs of path loss criteria_1 and path loss criteria_2 (at time t0) may be R p1 and R p2 respectively. When the UE moves to the coverage of another cell at time t1, the UE may update its path loss criteria to path loss criteria_3 and path loss criteria_4. The RSRPs of path loss criteria_3 and path loss criteria_4 at time t1 may be denoted as R t3 and R t4 respectively, and the RSRPs of path loss criteria_1 and path loss criteria_2 at time t1 may be R t1 and R t2It can be expressed as follows. For the definition of the RSRP change threshold, the following options can be considered.

[0127] Option 1: The UE may calculate the RSRP change details using the same path loss criterion. For example, the RSRP change of resource set 1 is the difference between R p1 and R t1 and the RSRP change of resource set 2 may refer to the difference between R p2 and R t2 .

[0128] The UE can transmit SRS separately in different resource sets. For example, if |R p1 -R t1 |>R th , the UE may stop transmitting SRS in resource set 1, and if |R p2 -R t2 |>R th , the UE may stop transmitting SRS in resource set 2. The same method can be used when the UE is composed of more resource sets. Alternatively, the gNB / LMF can configure different RSRP change thresholds R th1 , R th2 , …, R thn for different resource sets. n can be the number of resource sets configured for the UE.

[0129] On the other hand, the UE can transmit SRS in different SRS resource sets with the same threshold validity criterion. For example, if |R p1 -R t1 |>R th or |R p2 -R t2 |>R th , the UE may stop transmitting SRS in both resource sets.

[0130] From another perspective, the UE can transmit SRS on different SRS resource sets based on the average RSRP change. Specifically, the UE can store the RSRP as the average of the path loss criteria for different resource sets. For example, the stored RSRP in Figure 17 is (R p1 +R p2 ) / 2, which can be denoted as R pa . The RSRP of path loss criterion_1 and path loss criterion_2 at time t1 is (R t1 +R t2 ) / 2, which can be denoted as R ta . If |R pa -R ta |>R th , the UE may stop transmitting SRS on both resource sets.

[0131] Option 2: The UE may calculate the RSRP change details using the updated path loss criteria. For example, the RSRP change of resource set 1 refers to the difference between R p1 and R t3 , and the RSRP change of resource set 2 refers to the difference between R p2 and R t4 .

[0132] The UE can transmit SRS separately on different resource sets. For example, if |R p1 -R t3 |>R th , the UE may stop transmitting SRS on resource set 1. If |R p2 -R t4 |>R th , the UE may stop transmitting SRS on resource set 2. On the other hand, the UE can transmit SRS with the same threshold validity criterion. For example, if |R p1 -R t3 |>R th or |R p2 -R t4 |>R th , the UE may stop transmitting SRS on both resource sets.

[0133] From another perspective, the UE can transmit SRS on different SRS resource sets based on the average RSRP change. Specifically, the UE can store the RSRP as the average of the path loss criteria_1 and path loss criteria_2 at time t0. For example, the stored RSRP can be (R p1 +R p2 ) / 2, where R pa can be denoted. The RSRP of the path loss criteria_3 and path loss criteria_4 at time t1 is (R t3 +R t4 ) / 2, which can be denoted as R tan . When |R pa -R tan |>R th , the UE may stop transmitting SRS on both resource sets.

[0134] In this way, the UE can specify a detailed path loss criteria change threshold determination process and perform appropriate SRS transmission operations when the path loss criteria is updated.

[0135] In some embodiments, the derivation of the path loss criteria for TA verification can be as follows.

[0136] 1> If nrofSS-BlocksToAverage or absThreshSS-BlocksConsolidation does not exist, or absThreshSS-BlocksConsolidation exists and the value of the highest beam measurement quantity is equal to or greater than absThreshSS-BlocksConsolidation:

[0137] 2> Derive the downlink path loss criteria RSRP for TA verification as the value of the highest beam measurement quantity.

[0138] 1> Otherwise:

[0139] 2>Derive the downlink path loss reference RSRP for TA verification as the linear average of the power values up to the maximum nrofSS-BlocksToAverage of the highest beam measurement quantity exceeding absThreshSS-BlocksConsolidation.

[0140] In the foregoing example, the UE may derive the downlink path loss reference RSRP for TA verification as the value of the highest beam measurement quantity, e.g., max(RSRP, cell i) < absThreshSS-BlocksConsolidation, which means that the beam quality value is less than the configured threshold absThreshSS-BlocksConsolidation.

[0141] It should be noted that the UE can also derive the downlink path loss reference RSRP for TA verification as the linear average of the power values up to the maximum nrofSS-BlocksToAverage of the highest beam measurement quantity. The path loss reference described in the previous example can also be the linear average of the beam power values up to the maximum nrofSS-BlocksToAverage. For example, the RSRP of the path loss reference_i represents the linear average of the beam power values up to the maximum nrofSS-BlocksToAverage within cell i, where i = 1, 2, 3, 4. The path loss reference RSRP change verification method can also be applied with this option.

[0142] In some embodiments, the path loss reference measured by the UE can be used as a reference signal for TA RSRP change threshold definition. The path loss RS can be used for SRS transmission power control. The path loss reference and the path loss RS can be two separate signals.

[0143] Implementation Example 8: Some positioning methods, such as Carrier Phase Positioning (CPP), may require a Positioning Reference Unit (PRU). The UE measures the same Positioning Reference Signal (PRS) instance while performing carrier phase difference or measures the PRS simultaneously to improve positioning accuracy. In the case of an uplink (UL) positioning process, the PRU and the UE may be required to transmit Sounding Reference Signals (SRS) for positioning simultaneously in some cases. In this way, the Transmit and Receive Point (TRP) can perform carrier phase difference in CPP when receiving SRS for positioning from the PRU and the UE.

[0144] In some embodiments, the UE and the PRU may measure the same DL-PRS simultaneously in the positioning process. This implementation example provides some solutions to enable the UE and the PRU to measure the same PRS instance or measure the PRS simultaneously.

[0145] The LMF can configure the same response time for the Positioning Reference Unit (PRU) and the UE in the QoS-related IE (e.g., indicating the maximum response time measured between the reception of RequestLocationInformation and the transmission of ProvideLocationInformation), which can be included in RequestLocationInformation. In this way, the PRU and the UE may have to report the PRS measurement results within the same time limit. The PRU and the UE can measure the PRS simultaneously.

[0146] From another perspective, the gNB / LMF can configure the same time slot(s) for the PRU and the UE for PRS measurement, and the configuration may include the following IEs: dl-PRS-ID: the UE-specific TRP ID that transmits the corresponding PRS; slot number(s); dl-PRS-ResourceSetId (if necessary): the PRS-ResourceSet ID of the PRS resourceSet that includes the corresponding PRS; and / or dl-PRS-ResourceId (if necessary): the PRS-Resource ID of the PRS resource corresponding to the PRS instance to be measured. The PRU and the UE may have to measure the PRS in the configured time slot(s).

[0147] Alternatively, the gNB / LMF can also configure a time slot offset list for the PRU and the UE. The gNB / LMF may indicate the time slot offset at which the PRU and the UE can measure the PRS. The top element in the configured list has the highest measurement priority.

[0148] Alternatively, the gNB / LMF can also configure the same measurement window for the PRU and the UE. The configuration may include the following IEs: dl-PRS-ID: the UE-specific TRP ID that transmits the corresponding PRS; window start time / slot number(s); window end time / slot number(s); dl-PRS-ResourceSetId (if necessary): the PRS-ResourceSet ID of the PRS resourceSet that includes the corresponding PRS; and / or dl-PRS-ResourceId (if necessary): the PRS-Resource ID of the PRS resource corresponding to the PRS instance to be measured. The PRU and the UE can measure the PRS within the configured measurement window.

[0149] Alternatively, the number of configured time slots or measurement windows for each DL-PRS resource set can also be determined by the number N_sample of DL-PRS samples to be measured. For example, when the UE supports supportedDL-PRS-ProcessingSamples, N_sample = 1 or 2; otherwise, N_sample = 4. The configured time slots can be continuous or discontinuous time slots. Alternatively, this configuration can also be included in the on-demand PRS configuration.

[0150] In addition to configuring the time slot(s) or measurement window(s), the gNB / LMF can configure the same DL-PRS instance(s) for the PRU and the UE. The configuration may include the following IEs: dl-PRS-ID: the UE-specific TRP ID that transmits the corresponding PRS; periodic sequence; repeating sequence; dl-PRS-ResourceSetId (if necessary): the PRS-ResourceSet ID of the PRS resource set that includes the corresponding PRS; and / or dl-PRS-ResourceId (if necessary): the PRS-Resource ID of the PRS resource corresponding to the PRS instance to be measured. The PRS instance can be measured by the PRU and the UE.

[0151] Specifically, each DL-PRS resource can be configured using the following period and repetition factor.

[0152] dl-PRS-Periodicity-and-ResourceSetSlotOffset-r16 NR-DL-PRS-Periodicity-and-ResourceSetSlotOffset-r16,

[0153] dl-PRS-ResourceRepetitionFactor-r16 ENUMERATED{n2,n4,n6,n8,n16,n32,...} OPTIONAL,--Need OP

[0154] Figure 18 illustrates an example of downlink positioning reference signal (DL-PRS) instance determination according to some embodiments of the present disclosure. As shown in Figure 18, when a period and a repetition sequence are configured, the PRU and the UE can determine which DL-PRS instance can be measured.

[0155] Alternatively, the gNB / LMF can also configure an indicator in the DL-PRS resource and / or DL-PRS resource set configuration, and can indicate whether there are simultaneous DL-PRS requirements for this DL-PRS resource and / or DL-PRS resource set. If there are simultaneous DL-PRS requirements for this DL-PRS resource and / or DL-PRS resource set, the indicator can be set to 1, and if not, the indicator can be set to 0.

[0156] Alternatively, the gNB / LMF can also configure a priority set in the DL-PRS resource and / or DL-PRS resource set configuration to specify that PRS instances within the priority set can be measured with a higher priority. The top element in the configured list can have the highest measurement priority. The priority set configuration can include one or more of the following IEs: dl-PRS-ID: the UE-specific TRP ID that transmits the corresponding PRS; periodic sequence; repetition sequence; and / or slot number(s).

[0157] The UE can report an indicator together with the measurement report. If the reported result is based on the configured PRS instance or time slot, the UE may set the indicator to 1, and if not, the indicator can be set to 0.

[0158] The above-described method can guarantee or increase the probability that the PRU and the UE measure the same PRS instance or measure the PRS simultaneously. In such a case, the two measurement values can have the same time and frequency resources as well as a similar channel environment, which can further enable differential operation between different PRS measurement results. In this way, the UE and the PRU can receive the PRS simultaneously, and there is a possibility of further reducing the relative timing error, phase error, and measurement error of the received signal, thereby improving the positioning accuracy without affecting the power consumption of the UE.

[0159] Implementation Example 9: In some embodiments, the UE and the PRU may transmit sounding reference signals (SRS) for positioning simultaneously in the positioning process. This implementation example may provide some solutions to enable the UE and the PRU to transmit SRS for positioning simultaneously.

[0160] The gNB can configure the same slot offset(s) in the SRS-Config of the PRU and the UE for SRS transmission. The PRU and the UE can transmit SRS for positioning as configured in the SRS-Config.

[0161] Alternatively, the gNB can also trigger the positioning SRS transmission of the PRU and the UE in the downlink control information (DCI). Specifically, the gNB can transmit two DCIs. One DCI can be used to trigger the UE to transmit SRS for positioning in a given time slot, and the other DCI can be used to trigger the PRU to transmit SRS for positioning in that time slot.

[0162] Alternatively, the LMF can also send trigger information or on-demand SRS transmission slot numbers (s) to the gNB in the NR positioning protocol A (NRPPa) that specify the time slot (s) in which the PRU and the UE can simultaneously transmit SRS for positioning. The key point can be how to inform the gNB of which slot (s) the SRS from both the PRU and the target UE should be transmitted. Thus, the NRPPa signaling can be enhanced accordingly. For example, the LMF can recommend / request a list of slots or slot offsets or even time windows for potential SRS transmission. The recommended / requested list of slots / slot offsets / windows can be the same for the PRU and the target UE to present simultaneous SRS trigger / activation / transmission. The gNB can trigger / activate SRS in the same window (s) / slot (s) for two UEs (depending on the implementation). More specifically, the LMF can request / recommend / configure time slots / slot offsets / windows in the POSITIONING ACTIVATION REQUEST, which can be sent by the LMF to activate / trigger UL SRS transmission by the UE to the NG RAN node.

[0163] The method described above can guarantee or increase the probability that the PRU and the UE transmit SRS for positioning simultaneously with the same configuration, in which case the TRP receives the resources of the SRS for positioning simultaneously and can further enable differential operation between different SRS measurement results. In this way, the UE and the PRU can transmit SRS simultaneously, further reducing the relative timing error, phase error, and measurement error of the received signal on the gNB side, and ultimately improving the positioning accuracy without affecting the power consumption of the UE.

[0164] It should be understood that one or more features from the above implementation examples are not limited to specific implementation examples and can be combined in any way (e.g., in any priority and / or order, simultaneously or otherwise).

[0165] FIG. 19 illustrates a flowchart of a method 1900 for high-precision positioning. The method 1900 can be implemented using any one or more of the components and devices detailed herein with reference to FIGS. 1-2. Briefly, the method 1900 can be implemented by a wireless communication device or a wireless communication node in some embodiments. In the method 1900, additional, fewer, or different operations can be performed depending on the embodiment. At least one aspect of these operations is directed to a system, method, apparatus, or computer-readable medium.

[0166] A wireless communication device (e.g., a UE) can determine, respectively, a first information element (e.g., pathlossReferenceRS-Pos) and a second information element (e.g., SpatialRelationInfoPos) that constitute a path loss reference signal and a spatial relationship of the reference signal for uplink positioning. The wireless communication device can transmit a reference signal based on the first information element and the second information element to the wireless communication node.

[0167] In some embodiments, the wireless communication device may identify that there is no first information element in the configuration previously transmitted by the wireless communication node (the last serving gNB). The wireless communication device may select N signals as the first information element. The value of N can be configured by the wireless communication node or reported by the wireless communication device. The value of N can be determined based on some resource sets configured for the wireless communication device or based on the capabilities of the wireless communication device. At least one or more of the N signals can be selected from the same cell. At least one or more of the N signals can come from one cell. For example, if the UE selects signals 1, 2, 3, 4, 5 as its path loss RS, signals 1 and 2 may come from cell 1, and signals 3, 4, and 5 may come from cell 2.

[0168] In some embodiments, the N signals can each be selected from different cells. The N signals can be selected from the configured N c cells. In some embodiments, some of the signals may come from the same cell, and the gNB can also configure N c for the UE. The wireless communication device may receive a cell list indicating N c cells from the wireless communication node. The type of the N signals can be configured by the wireless communication node. This type can include one of SSB, PRS, PO, or SIB. The type of the N signals can be configured by the wireless communication device itself.

[0169] In some embodiments, the wireless communication device may select N signals based on a threshold value of the beam measurement quantity configured by the wireless communication device node. The threshold value of the beam measurement quantity can be an RSRP threshold. The wireless communication device may select N b signals based on the N beams having the highest / lowest average measurement quantity values. N b can be configured by the wireless communication node.

[0170] In some embodiments, the wireless communication device may report N selected signals to a wireless communication device node. Instead of the UE transmitting N selected signals to the gNB, the UE may notify the gNB which signals are selected as the path loss RS.

[0171] In some embodiments, the wireless communication device may identify that a first information element is provided in a configuration transmitted by a wireless communication node. The first information element can be configured by the wireless communication node as one or more reference signals within a reference signal list. At least a portion of the one or more reference signals can be from the same cell. The one or more reference signals can each be from a different cell. The one or more reference signals can each be an SSB or a PRS. The reference signal list may further indicate a criterion regarding the value of a beam measurement quantity. The criterion regarding the value of the beam measurement quantity can be an RSRP limit.

[0172] In some embodiments, the wireless communication device may identify that a second information element does not exist in a configuration previously transmitted by a wireless communication node (the last serving gNB). The wireless communication device may select K signals as the second information element. The value of K can be configured by the wireless communication node or reported by the wireless communication device. The value of K can be determined based on some resources or resource sets configured for the wireless communication device or based on the capabilities of the wireless communication device. One or more of the K signals can be selected from the same cell. The K signals can each be selected from a different cell. The K signals can be selected from K c configured cells. The wireless communication device may receive a cell list indicating K c cells from the wireless communication node.

[0173] In some embodiments, the types of the K signals can be configured by a wireless communication node. This type may include one of SSB, PRS, PO, SIB, or CSI-RS. The types of the K signals can be configured by the wireless communication device itself. The wireless communication device may select the K signals based on a criterion regarding the value of the beam measurement quantity configured by the wireless communication device node. The criterion regarding the value of the beam measurement quantity can be an RSRP limit.

[0174] In some embodiments, the wireless communication device may select the K b signals based on the K beams having the highest / lowest average measurement quantity values. K b can be configured by a wireless communication node. The wireless communication device may report the K selected signals to the wireless communication device node.

[0175] In some embodiments, the wireless communication device may identify that a second information element is provided in a configuration previously transmitted by the wireless communication node. The second information element can be configured by the wireless communication node as one or more reference signals within a spatial relationship list. Some of the one or more reference signals can be from the same cell. The one or more reference signals can be from different cells respectively. Each of the one or more reference signals can be SSB, PRS, or CSI-RS. The reference signal list may further indicate a criterion regarding the value of the beam measurement quantity. The criterion regarding the value of the beam measurement quantity can be an RSRP limit.

[0176] In some embodiments, the wireless communication device may update a first information element within a slot that meets a time limit configured by the wireless communication node. The wireless communication device may update a second information element within a slot that meets a time limit configured by the wireless communication node.

[0177] In some embodiments, a wireless communication device (e.g., a UE) may determine a reference signal for RSRP threshold calculation regarding an increase / decrease in RSRP for time alignment verification. The reference signal can be a path loss RS and / or a path loss reference. The RSRP increase / decrease value can be calculated using the same reference signal within one cell or different reference signals within different cells. The wireless communication device can use the same or different time alignment verifications for positioning sounding reference signal transmissions in different resource sets.

[0178] In some embodiments, a network entity of the core network (e.g., an LMF, a location management function) may configure time-related information or a PRS instance indicator for a first wireless communication device (e.g., a UE) and a second wireless communication device (e.g., a PRU), enabling the first wireless communication device and the second wireless communication device to simultaneously measure a PRS instance or a DL-PRS. The time-related information can be a list of time slots or a list of slot offsets or a list of time windows. The PRS instance indicator can be a list of periodic sequences and / or repeating sequences.

[0179] In some embodiments, a network entity of the core network (e.g., an LMF) may configure time-related information for a second network entity (e.g., a gNB) or request this from the second network entity, enabling the first wireless communication device and the second wireless communication device to simultaneously transmit SRS.

[0180] In some embodiments, a network entity (e.g., gNB) of the core network may trigger / activate a first wireless communication device (e.g., UE) and a second wireless communication device (e.g., PRU) as indicated by time-related information, and enable the first wireless communication device and the second wireless communication device to transmit SRS simultaneously. The time-related information may be a list of time slots or a list of slot offsets or a list of time windows.

[0181] Although various embodiments of the present solution have been described above, it should be understood that they are presented only as examples and not as limitations. Similarly, the various figures may depict exemplary architectures or configurations, which are provided to enable those skilled in the art to understand the exemplary features and functions of the present solution. However, such those skilled in the art will understand that the present solution is not limited to the exemplary architectures or configurations illustrated, and can be implemented using various alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of one embodiment can also be combined with one or more features of another embodiment described herein. Therefore, the scope and range of the present disclosure should not be limited by any of the above-described exemplary embodiments.

[0182] It should also be understood that any reference in this specification to elements using terms such as "first", "second", etc. generally does not limit the quantity or order of those elements. Rather, these terms can be used herein as a convenient means to distinguish between two or more elements or examples of elements. Therefore, references to the first and second elements do not mean that only two elements can be used, nor that the first element must precede the second element in any way.

[0183] Furthermore, those skilled in the art will also understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referred to in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0184] Those skilled in the art will further understand that any of the various exemplary logical blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of the two), firmware, various forms of program or design code incorporating instructions (which may be referred to herein for convenience as "software" or "software modules"), or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware, and software, various exemplary components, blocks, modules, circuits, and steps have generally been described in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or as a combination of these techniques, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in various ways for each particular application, but such implementation decisions do not depart from the scope of the present disclosure.

[0185] Furthermore, those skilled in the art will understand that the various exemplary logical blocks, modules, devices, components, and circuits described herein can be implemented within or performed by an integrated circuit (IC) that includes a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logical blocks, modules, and circuits can further include antennas and / or transceivers for communicating with various components within a network or device. The general-purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. The processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other suitable configuration for performing the functions described herein.

[0186] When implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium. A computer-readable medium includes both a computer storage medium and a communication medium that can be made capable of transferring a computer program or code from one location to another. The storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0187] As used herein, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the related functions described herein. Further, for purposes of discussion, the various modules are described as individual modules, but as will be apparent to those skilled in the art, two or more modules may be combined to form a single module for performing the related functions according to embodiments of the present solution.

[0188] Furthermore, memory or other storage, as well as communication components, may be used in embodiments of the present solution. For the sake of clarity, it will be understood that the above description has been explaining embodiments of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, between processing logic elements, or between domains may be used without impairing the present solution. For example, functionality illustrated as being implemented by separate processing logic elements or controllers may be implemented by the same processing logic element or controller. Thus, references to specific functional units are not intended to denote a strict logical or physical structure or organization, but rather are merely references to suitable means for providing the described functionality.

[0189] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of the disclosure. Therefore, the disclosure is not intended to be limited to the embodiments shown herein, but rather should be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method, comprising: determining, by a wireless communication device, a first information element and a second information element that respectively constitute a path loss reference signal and a spatial relationship of the reference signal for uplink positioning; transmitting, by the wireless communication device, the reference signal based on the first information element and the second information element to a wireless communication node. A wireless communication method comprising the above.

2. identifying, by the wireless communication device, that the first information element does not exist in a configuration previously transmitted by a wireless communication node; selecting, by the wireless communication device, N signals as the first information element. The wireless communication method according to claim 1, further comprising the above.

3. The wireless communication method according to claim 2, wherein the value of N is configured by the wireless communication node or reported by the wireless communication device.

4. The wireless communication method according to claim 2, wherein the value of N is determined based on several resource sets configured for the wireless communication device or based on the capabilities of the wireless communication device.

5. The wireless communication method according to claim 2, wherein at least one or more of the N signals are selected from the same cell.

6. The wireless communication method according to claim 2, wherein the N signals are respectively selected from different cells.

7. The N signals are selected from the N ｃ configured cells, and the wireless communication method according to claim 2.

8. The wireless communication method according to claim 7, further comprising receiving, by the wireless communication device, from the wireless communication node, a cell list indicating the N ｃ cells.

9. The wireless communication method according to claim 2, wherein the type of the N signals is configured by the wireless communication node, and the type includes one of SSB, PRS, PO, or SIB.

10. The wireless communication method according to claim 2, wherein the type of the N signals is configured by the wireless communication device itself.

11. The wireless communication method according to claim 2, further comprising selecting, by the wireless communication device, the N signals based on a criterion related to a value of a beam measurement quantity configured by the wireless communication device node.

12. The wireless communication method according to claim 11, wherein the criterion related to the value of the beam measurement quantity can be an RSRP limit.

13. The wireless communication device further includes selecting the N signals based on N beams having values of maximum / minimum average measurement quantities ｂ The wireless communication method according to claim 2, further comprising:

14. N ｂ is the wireless communication method according to claim 13, which can be configured by the wireless communication node.

15. The wireless communication method according to claim 2, further comprising reporting, by the wireless communication device, the N selected signals to the wireless communication device node.

16. further comprising identifying that the first information element is provided in a configuration transmitted by a wireless communication node by the wireless communication device, The wireless communication method according to claim 1, wherein the first information element is configured as one or more reference signals in a reference signal list by the wireless communication node. **Claim 17** The wireless communication method according to claim 16, wherein at least some of the one or more reference signals are from the same cell. **Claim 18** The wireless communication method according to claim 16, wherein the one or more reference signals are from different cells respectively. **Claim 19** The wireless communication method according to claim 16, wherein each of the one or more reference signals is an SSB or a PRS. **Claim 20** The wireless communication method according to claim 16, wherein the reference signal list further indicates a reference regarding a value of a beam measurement quantity. **Claim 21** The wireless communication method according to claim 20, wherein the reference regarding the value of the beam measurement quantity can be an RSRP limit. **Claim 22** identifying by the wireless communication device that the second information element does not exist in a configuration previously transmitted by a wireless communication node, and selecting, by the wireless communication device, K signals as the second information element The wireless communication method according to claim 1, further comprising. **Claim 23** The wireless communication method according to claim 22, wherein the value of K is configured by the wireless communication node or reported by the wireless communication device. **Claim 24** The wireless communication method according to claim 22, wherein the value of K is determined based on some resources or resource sets configured for the wireless communication device or based on the capabilities of the wireless communication device. **Claim 25** The wireless communication method according to claim 22, wherein one or more of the K signals are selected from the same cell. **Claim 26** The wireless communication method according to claim 22, wherein the K signals are selected from different cells respectively. **Claim 27** The K signals are selected from the configured K ｃ cells, and the wireless communication method according to claim 22. **Claim 28** receiving, by the wireless communication device, from the wireless communication node, a cell list indicating the K ｃ cells, the wireless communication method according to claim 27, further comprising. **Claim 29** The type of the K signals is configured by the wireless communication node, and the type includes one of SSB, PRS, PO, SIB, or CSI-RS. The wireless communication method according to claim 22. **Claim 30** The type of the K signals is configured by the wireless communication device itself. The wireless communication method according to claim 22. **Claim 31** The wireless communication method according to claim 22, further comprising selecting the K signals by the wireless communication device based on a criterion regarding a value of a beam measurement quantity configured by the wireless communication device node.

32. The wireless communication method according to claim 31, wherein the criterion regarding the value of the beam measurement quantity can be an RSRP limit.

33. The wireless communication device further includes selecting the K signals based on K beams having values of maximum / minimum average measurement amounts. ｂ The wireless communication method according to claim 22, further comprising:

34. K ｂ is the wireless communication method according to claim 33, which can be constituted by the wireless communication node.

35. The wireless communication method according to claim 22, further comprising reporting the K selected signals by the wireless communication device to the wireless communication device node.

36. The wireless communication method according to claim 1, further comprising identifying by the wireless communication device that the second information element is provided in a configuration previously transmitted by a wireless communication node, wherein the second information element is configured as one or more reference signals in a spatial relationship list by the wireless communication node.

37. The wireless communication method according to claim 36, wherein some of the one or more reference signals are from the same cell.

38. The wireless communication method according to claim 36, wherein the one or more reference signals are from different cells respectively.

39. The wireless communication method according to claim 36, wherein the one or more reference signals are each an SSB, a PRS, or a CSI-RS.

40. The wireless communication method according to claim 36, wherein the reference signal list further indicates a criterion regarding a value of a beam measurement quantity.

41. The wireless communication method according to claim 40, wherein the criterion regarding the value of the beam measurement quantity can be an RSRP limit.

42. The wireless communication method according to claim 1, further comprising updating, by the wireless communication device, the first information element within a slot that satisfies a time limit configured by a wireless communication node.

43. The wireless communication method according to claim 1, further comprising updating, by the wireless communication device, the second information element within a slot that satisfies a time limit configured by a wireless communication node.

44. The wireless communication method according to claim 1, further comprising determining, by a wireless communication device, a reference signal for RSRP threshold calculation regarding an increase / decrease of RSRP for time alignment verification.

45. The wireless communication method according to claim 44, wherein the reference signal can be a path loss RS and / or a path loss reference.

46. The wireless communication method according to claim 44, wherein the RSRP increase / decrease value can be calculated using the same reference signal within one cell.

47. The wireless communication method according to claim 44, wherein the RSRP increase / decrease value can be calculated using different reference signals in different cells.

48. The wireless communication method according to claim 44, wherein the wireless communication device can use the same or different time alignment verifications for positioning sounding reference signal transmissions in different resource sets.

49. A wireless communication method, comprising: configuring time-related information or a PRS instance indicator by a network entity of a core network for a first wireless communication device and a second wireless communication device, and enabling the first wireless communication device and the second wireless communication device to simultaneously measure a PRS instance or a DL-PRS.

50. The wireless communication method according to claim 49, wherein the time-related information can be a list of time slots or a list of slot offsets or a list of time windows.

51. The wireless communication method according to claim 49, wherein the PRS instance indicator can be a list of periodic sequences and / or repeating sequences.

52. A wireless communication method, comprising: configuring / requesting time-related information by a network entity of a core network, and enabling a first wireless communication device and a second wireless communication device to simultaneously transmit SRS.

53. The wireless communication method according to claim 52, further comprising: triggering / activating by a network entity of a core network for a first wireless communication device and a second wireless communication device as indicated by the time-related information, and enabling the first wireless communication device and the second wireless communication device to simultaneously transmit SRS.

54. The wireless communication method according to claim 51 or 52, wherein the time-related information can be a list of time slots or a list of slot offsets or a list of time windows.

55. A wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement the method according to any one of claims 1 to 54. **Claim 56** A computer program product comprising computer-readable program media code stored thereon, wherein when the code is executed by a processor, the processor is caused to implement the method according to any one of claims 1 to 54.

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