CN116349254A

CN116349254A - Method and apparatus for wireless communication

Info

Publication number: CN116349254A
Application number: CN202180072778.1A
Authority: CN
Inventors: 尤心; 卢前溪; 刘洋
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2023-06-27
Also published as: WO2022198433A1

Abstract

The embodiment of the application provides a wireless communication method and device, after a terminal device or an LMF entity initiates an On-demand PRS request, the terminal device can automatically switch PRS configuration information based On a timer, so that unnecessary signaling overhead generated by PRS configuration among the terminal device, a base station or TRP and the LMF entity is avoided, and the performance of a communication system is optimized. The method of wireless communication includes: the terminal equipment receives first information, wherein the first information is used for indicating target PRS configuration information or indicating an index of the target PRS configuration information; the terminal device uses the target PRS configuration information to make PRS measurements during a first timer operation.

Description

Method and apparatus for wireless communication

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a method and apparatus for wireless communications.

Background

In a New Radio, NR, system, positioning may be implemented based on positioning reference signals (positioning reference signals, PRS). In order to increase efficiency, reduce latency and increase positioning accuracy, on-demand PRS (On-demand PRS) is introduced in release17, R17 or Rel17, i.e. a suitable PRS configuration is requested based On the requirements of the terminal device or the positioning management function (Location Management Function, LMF) entity. However, in On-demand PRS, how to implement PRS configuration is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and device, after a terminal device or an LMF entity initiates an On-demand PRS request, the terminal device can automatically switch PRS configuration information based On a timer, so that unnecessary signaling overhead generated by PRS configuration among the terminal device, a base station or TRP and the LMF entity is avoided, and the performance of a communication system is optimized.

In a first aspect, a method of wireless communication is provided, the method comprising:

the terminal equipment receives first information, wherein the first information is used for indicating target PRS configuration information or indicating an index of the target PRS configuration information;

the terminal device uses the target PRS configuration information to make PRS measurements during a first timer operation.

In a second aspect, there is provided a method of wireless communication, the method comprising:

the LMF entity sends first information to the terminal equipment;

the first information is used for indicating the PRS configuration information of the target positioning reference signal, or is used for indicating the index of the PRS configuration information; the target PRS configuration information is used for PRS measurements by the terminal device during a first timer operation.

In a third aspect, a method of wireless communication is provided, the method comprising:

the terminal device replaces the stored PRS configuration information with the target PRS configuration information and uses the target PRS configuration information to make PRS measurements.

In a fourth aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a fifth aspect, there is provided an LMF entity for performing the method of the second aspect above.

In particular, the LMF entity comprises functional modules for performing the method in the second aspect described above.

In a sixth aspect, a terminal device is provided for performing the method in the third aspect.

Specifically, the terminal device comprises a functional module for performing the method in the third aspect described above.

In a seventh aspect, a terminal device is provided, comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.

In an eighth aspect, an LMF entity is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect described above.

In a ninth aspect, a terminal device is provided, comprising a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the third aspect described above.

In a tenth aspect, there is provided an apparatus for implementing the method of any one of the first to third aspects.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method of any of the first to third aspects as described above.

In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to execute the method of any one of the above first to third aspects.

In a twelfth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to third aspects above.

In a thirteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to third aspects described above.

By the technical scheme, after the terminal equipment or the LMF entity initiates the On-demand PRS request, the LMF entity can indicate target PRS configuration information, and the terminal equipment uses the target PRS configuration information to conduct PRS measurement during the operation of the first timer. That is, the terminal device can automatically switch PRS configuration information based on a timer, avoiding unnecessary signaling overhead generated between the terminal device, the base station or TRP, LMF entities due to PRS configuration, thereby optimizing performance of the communication system.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture to which embodiments of the present application apply.

FIG. 2 is a schematic flow diagram of an on-demand PRS provided herein.

Fig. 3 is a schematic flow chart of a method of wireless communication provided in accordance with an embodiment of the present application.

FIG. 4 is a schematic flow diagram of an on-demand PRS provided in accordance with an embodiment of the present application.

Fig. 5 is a schematic flow chart diagram of another method of wireless communication provided in accordance with an embodiment of the present application.

Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Figure 7 is a schematic block diagram of an LMF entity provided in accordance with an embodiment of the present application.

Fig. 8 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio, NR system evolution system, LTE over unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR over unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile telecommunication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

In some embodiments, the communication system in the embodiments of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) networking scenario.

In some embodiments, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

Embodiments of the present application describe various embodiments in connection with network devices and terminal devices, where a terminal device may also be referred to as a User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a PLMN network of future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. In some embodiments, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. In some embodiments, the network device may also be a base station located on land, in water, etc.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices, and in some embodiments, the communication system 100 may include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited in this embodiment.

In some embodiments, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the specific implementation of the present application is not limited. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

To facilitate a better understanding of embodiments of the present application, positioning techniques related to the present application are described.

The location is one of the indispensable applications in daily life, and the delay and accuracy requirements for positioning are becoming more and more stringent. In many positioning applications, accurate positioning is typically achieved by a combination of techniques. For example, 1, providing location information in an outdoor scenario based on a global navigation satellite system (Global Navigation Satellite System, GNSS); 2. radio technologies (e.g., LTE networks, providing a variety of options to locate users, wireless networks, terrestrial beacon systems, etc.); 3. an inertial measurement unit (Inertial Measurement Units, IMU) or sensor (e.g., based on accelerometers tracking user position, gyroscopes, magnetometers, or vertical positioning with barometric pressure sensors). These techniques are all expected to play an important role in achieving accurate user positioning in the future.

The enhanced positioning capability of The third generation partnership project (The 3rd Generation Partnership Project,3GPP) New air interface (NR) system brings additional gains. The operation of the low and high frequency bands (i.e., FR1 and FR 2) and the use of a large number of antenna arrays provide additional degrees of freedom, greatly improving positioning accuracy. Time measurement with large bandwidth (low band as well as high band) gives better performance for user positioning based on positioning techniques such as observed time difference of arrival (Observed Time Difference of Arrival, OTDOA) and uplink time difference of arrival (Uplink Time Difference of Arrival, UL-TDOA), cell identity (Cell-ID) or enhanced Cell identity (E-Cell-ID). With large-scale (massive) antenna systems, such as multiple-input multiple-output (multiple in multiple out, MIMO), a more accurate user position is achieved by combining time measurements with the spatial and angular domains of the propagation channels.

Release15 (Rel-15) NR positioning problem defines a Cell-ID (including partial Cell identity) and independent (independent) radio access technology (Radio Access Technology, RAT) (RAT-independent) positioning method based on long term evolution positioning protocol (Evolution Positioning Protocol, LPP). Release16, rel-16, mainly studied the NR independent network deployment (stand alone) RAT-dependent positioning method, including downlink arrival Time difference (Downlink Time Difference of Arrival, DL-TDOA), downlink departure angle (Downlink Angle of Departure, DL-AoD), UL-TDOA, uplink departure angle (Uplink Angle of Departure, UL-AoD), round Trip Time (RTT), and E-Cell-ID, etc.

The positioning project of 3GPP R17 mainly considers that the positioning method and related reference signals are enhanced in terms of improving accuracy, reducing time delay and improving efficiency of a terminal side and a network side.

In order to improve efficiency, reduce delay and improve positioning accuracy, R17NR positioning (positioning) proposes an enhancement, PRS (on-demand PRS), whose main gains include the following:

efficiency (Efficiency), downlink on demand PRS (DL-PRS) avoids unnecessary overhead, energy wastage, etc. in case no terminal device positioning is needed at a specific time or in a specific area of the network. In the case of beamformed DL-PRSs, DL-PRS transmissions in all beam scanning directions may result in unnecessary transmissions of DL-PRSs.

Delay (Latency), the current DL-PRS configuration may not be sufficient to meet the response time requirements of the location services (Location Services, LCS) client; for example, the periodicity may be too large.

Precision (Accuracy), the current DL-PRS configuration may not be sufficient to meet the precision requirements of LCS clients; for example, the bandwidth may be too small, the number of repetitions too small, etc.

For better understanding of the embodiments of the present application, the downlink positioning reference signals related to the present application are described.

The downlink positioning reference signal mainly includes PRS, which is uniformly configured by LMF entity and sent to the terminal device by LPP message in Rel-16. Specifically, each base station (e.g., gNB) or transmission receiving point (Transmission Reception Point, TRP) reports PRS configurations that it can send to the LMF entity, which coordinates PRS configurations reported by multiple gnbs/TRPs and generates final PRS configuration information based on these configurations to send to the terminal device and the gnbs/TRPs.

Because different terminals and different positioning requests have different precision requirements, the PRS configuration of the unified configuration may not meet the precision requirements of individual terminals and individual applications; on the other hand, for the terminal without positioning requirement at present, the network side continuously transmits the PRS also brings additional power consumption overhead. The main idea of On-demand PRS is that a suitable PRS configuration may be requested based On the requirements of the terminal/LMF entity so that the network side maximally meets the requirements of accuracy On the basis of minimum transmission power consumption.

In some implementations, the flow of On-demand PRS may be as shown in fig. 2. Specifically, the flow of On-demand PRS shown in fig. 2 may include the following steps:

s11-a, a terminal device initiates a PRS request according to requirements;

S11-b, an LMF entity initiates a PRS request according to requirements;

s12-a, the LMF entity sends a PRS configuration update request to a serving cell base station;

s12-b, the LMF entity sends PRS configuration update request to the neighbor cell base station of the serving cell;

s13-a, a serving cell base station sends a PRS configuration update response to an LMF entity;

s13-b, the neighbor cell base station of the serving cell sends PRS configuration update response to the LMF entity;

s14, the LMF entity sends new PRS configuration information to the terminal equipment.

It should be noted that S11-a and S11-b may be executed only one or may be executed simultaneously.

In other implementations, the base station in fig. 2 described above may also be a TRP.

If the terminal equipment initiates an on-demand PRS request, the network needs to request configuration modification and update to each gNB/TRP, and after receiving the request, the gNB/TRP needs to feed back LMF entities one by one, which definitely brings extra signaling overhead. In order to solve the problem, the application provides a scheme for automatically switching PRS configuration information based on a timer.

The technical scheme of the present application is described in detail below through specific embodiments.

Fig. 3 is a schematic flow chart of a method 200 of wireless communication according to an embodiment of the present application, as shown in fig. 3, the method 200 may include at least some of the following:

S210, the LMF entity sends first information to the terminal equipment; the first information is used for indicating the configuration information of the target PRS, or the first information is used for indicating the index of the configuration information of the target PRS;

s220, the terminal equipment receives the first information;

s230, the terminal equipment uses the target PRS configuration information to conduct PRS measurement during the operation of the first timer.

That is, the target PRS configuration information is used for PRS measurements by the terminal device during a first timer operation.

In an embodiment of the present application, after a terminal device or an LMF entity initiates an on-demand PRS (on-demand PRS) request, the LMF entity may send first information to the terminal device to configure target PRS configuration information.

In some embodiments, the target PRS configuration information is for a full configuration (full config) or the target PRS configuration information is for a variable or change configuration (delta config). That is, for delta config, the target PRS configuration information may include only a variation of PRS configuration, and the complete PRS configuration information may be determined from the existing PRS configuration and the variation of PRS configuration.

In some embodiments, prior to performing S210, the terminal device sends first request information to the LMF entity, the first request information being for requesting PRS configuration on demand. That is, before performing S210, the terminal device initiates an on-demand PRS (on-demand PRS) request.

In some implementations, the first request information includes PRS configuration information corresponding to a current traffic type or positioning accuracy or the first request information includes an index of PRS configuration information corresponding to a current traffic type or positioning accuracy. That is, the terminal device may determine PRS configuration information that needs to be requested based on a current traffic type or positioning accuracy.

In some embodiments, PRS configuration information corresponding to a current traffic type or positioning accuracy is for a full configuration (full configuration), or PRS configuration information corresponding to a current traffic type or positioning accuracy is for a variable or variable configuration (delta configuration). That is, for delta config, PRS configuration information corresponding to a current traffic type or positioning accuracy may include only a variation of PRS configuration.

In some implementations, in the case that the first request information includes an index of PRS configuration information corresponding to a current service type or positioning accuracy, the network pre-configures a plurality of sets of PRS configuration information and indexes (indexes) corresponding to the PRS configuration information to the terminal device, so that the terminal device requests the corresponding index (index) of PRS configuration from the network based on a requirement of the current service type or positioning accuracy.

In some implementations, the first request information may include specific parameters of the requested PRS configuration information, including in particular but not limited to at least one of:

a period change amount (Changes to periodicity), such as an increase or decrease in period;

time domain offset (time offset);

repeat times (repetition);

bandwidth (bandwidth);

comb patterns (comb patterns);

the amount of change in transmit power or frequency of PRS; for example, when measuring low RSRP on PRS, the amount of change in the transmit power or frequency of PRS;

an amount of beam change (increase/decrease), or an amount of change (increase/decrease) in the transmit beam of the TRP/cell;

turning on/off certain PRS configurations of TRP/cells or deactivating certain PRS configurations of TRP/cells; for example, when measuring high interference, certain PRS configurations of TRP/cells are turned on/off, or deactivated.

In some embodiments, the first request information includes target information for indicating updating PRS configuration information. Accordingly, the LMF entity may update PRS configuration information based on the target information.

In some embodiments, the target information includes, but is not limited to, one of:

The positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.

For example, the target information may be a cause value (cause value), that is, the value of the cause value may be one of an improvement in positioning accuracy, a reduction in positioning accuracy, and a current no-positioning service.

In some embodiments, the LMF entity may initiate an on-demand PRS configuration request prior to performing S210. That is, before performing S210, the LMF entity initiates an on-demand PRS (on-demand PRS) request.

In some embodiments, the start or restart condition of the first timer includes at least one of:

the terminal equipment receives feedback information aiming at information for requesting PRS configuration according to requirements;

the terminal equipment receives auxiliary information transmission information for PRS configuration;

the terminal device sends information requesting PRS configuration as needed.

Wherein the assistance information transfer message for PRS configuration may be, for example, an LPP provisioning assistance data message (LPP ProvideAssistanceData).

In some embodiments, the stop condition of the first timer comprises at least one of:

the terminal equipment receives a message for instructing the terminal equipment to perform PRS measurement by using default PRS configuration information;

The terminal device receives an auxiliary information transmission message for PRS configuration.

In some embodiments, in the event that the first timer expires, the terminal device performs at least one of:

performing PRS measurement by using default PRS configuration information;

performing PRS measurements using the last stored PRS configuration information;

retransmitting information for requesting PRS configuration as needed;

stopping receiving or measuring PRS;

stopping positioning.

In the embodiment of the application, the terminal device uses the target PRS configuration information to perform PRS measurement during the operation period of the first timer, and in the case of the expiration of the first timer, the terminal device may use default PRS configuration information to perform PRS measurement, or use the last stored PRS configuration information to perform PRS measurement. That is, the terminal device can automatically switch PRS configuration information based on a timer, avoiding unnecessary signaling overhead generated between the terminal device, the base station or TRP, LMF entities due to PRS configuration, thereby optimizing performance of the communication system.

In the embodiment of the application, the terminal equipment uses the target PRS configuration information to perform PRS measurement during the operation period of the first timer, and the terminal equipment retransmits the information for requesting PRS configuration according to the requirement under the condition that the first timer is overtime. That is, the terminal device can use and request PRS configuration information based on the timer, increasing flexibility of PRS configuration.

In the embodiment of the application, the terminal equipment uses the target PRS configuration information to perform PRS measurement during the operation of the first timer, and under the condition that the first timer is overtime, the terminal equipment stops receiving or measuring PRS, or stops positioning. That is, the terminal device may use PRS configuration information based on a timer, may control PRS reception or measurement based on a timer, and may control positioning services based on a timer, thereby increasing flexibility of PRS configuration.

In some embodiments, the first timer is configured for the LMF entity. Of course, the LMF timer may also be pre-configured or agreed upon, which is not limited in this application.

In some embodiments, the first timer is maintained jointly by the terminal device, the LMF entity, an access network device, or a TRP. That is, the terminal device, the LMF entity, the access network device, or the TRP may collectively maintain the start or restart, stop of the first timer, and the behavior that may be triggered after the first timer expires.

In some embodiments, the first timer is maintained by the terminal device and the LMF entity together. That is, both the terminal device and the LMF entity may together maintain the start or restart, stop of the first timer, and possibly the triggered behavior after the first timer expires.

Thus, in embodiments of the present application, after a terminal device or LMF entity initiates an On-demand PRS request, the LMF entity may indicate target PRS configuration information that the terminal device uses to make PRS measurements during a first timer run. That is, the terminal device can automatically switch PRS configuration information based on a timer, avoiding unnecessary signaling overhead generated between the terminal device, the base station or TRP, LMF entities due to PRS configuration, thereby optimizing performance of the communication system.

The following describes a specific embodiment of the present application based on a specific embodiment, and as shown in fig. 4, may specifically include the following steps:

s21-a, the terminal equipment initiates a PRS on demand request, wherein the PRS on demand request can comprise requested PRS configuration information, or the PRS on demand request can comprise an index of the requested PRS configuration information; in some implementations, the on-demand PRS request may include specific parameters and cause values (cause values) of the requested PRS configuration information (see description above for details regarding first request information);

s21-b, the LMF entity initiates a PRS on demand request, wherein the PRS on demand request may include the requested PRS configuration information, or the PRS on demand request may include an index of the requested PRS configuration information; in some implementations, the on-demand PRS request may include specific parameters and cause values (cause values) of the requested PRS configuration information (see description above for details regarding first request information);

S22-a, the LMF entity sends a PRS configuration update request to a serving cell base station;

s22-b, the LMF entity sends a PRS configuration update request to the neighbor cell base station;

s23-a, the serving cell base station sends PRS configuration update response to the LMF entity;

s23-b, the neighbor cell base station sends PRS configuration update response to the LMF entity;

s24, the LMF entity sends a PRS response on demand to the terminal equipment, wherein the PRS response on demand can comprise target PRS configuration information, or the PRS activation message can comprise an index of the target PRS configuration information;

s25, the terminal device starts the first timer (see the description of the first timer above for details).

S26, the terminal equipment uses the target PRS configuration information to conduct PRS measurement and position estimation during the operation of the first timer.

It should be noted that S21-a and S21-b may be executed only one or may be executed simultaneously.

Fig. 5 is a schematic flow chart diagram of a method 300 of wireless communication according to an embodiment of the present application, as shown in fig. 5, the method 300 may include at least some of the following:

s310, the terminal equipment receives first information sent by an LMF entity, wherein the first information is used for indicating target PRS configuration information or used for indicating an index of the target PRS configuration information;

S320, the terminal device replaces the stored PRS configuration information with the target PRS configuration information, and uses the target PRS configuration information to make PRS measurements.

That is, in the embodiment of the present application, after the terminal device receives the new PRS configuration information, the terminal device covers the PRS configuration information stored in the last PRS configuration information, so that the terminal device does not need to store multiple sets of PRS configuration information, and maintenance pressure of PRS configuration information is reduced.

In some implementations, in the case that the first request information includes an index of PRS configuration information corresponding to a current service type or positioning accuracy, the network pre-configures a plurality of sets of PRS configuration information and indexes (indexes) corresponding thereto to the terminal device, so that the terminal device requests the corresponding index (index) of PRS configuration from the network based on a requirement of the current service type or positioning accuracy.

time domain offset (time offset);

repeat times (repetition);

bandwidth (bandwidth);

comb patterns (comb patterns);

the amount of change in transmit power or frequency of PRS; for example, when measuring low RSRP on PRS, the amount of change in transmit power or frequency of PRS;

Therefore, in the embodiment of the application, the terminal equipment automatically replaces the stored PRS configuration information with the target PRS configuration information, so that unnecessary signaling overhead generated by PRS configuration among the terminal equipment, the base station or TRP and LMF entities is avoided, and the performance of the communication system is optimized.

The method embodiments of the present application are described in detail above with reference to fig. 3 to 5, and the apparatus embodiments of the present application are described in detail below with reference to fig. 6 to 11, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 6 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in fig. 6, the terminal device 400 includes:

a communication unit 410 configured to receive first information, where the first information is used to indicate PRS configuration information of a target positioning reference signal, or the first information is used to indicate an index of PRS configuration information of the target;

a processing unit 420 for performing PRS measurements using the target PRS configuration information during a first timer run.

In some embodiments, the communication unit 410 is further configured to send first request information for requesting PRS configuration on demand.

In some embodiments, the first request information includes PRS configuration information corresponding to a current traffic type or positioning accuracy, or the first request information includes an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.

In some embodiments, the first request information includes target information for indicating updating PRS configuration information.

In some embodiments, the target information includes one of:

the terminal device sends information requesting PRS configuration as needed.

performing PRS measurement by using default PRS configuration information;

retransmitting information for requesting PRS configuration as needed;

stopping receiving or measuring PRS;

stopping positioning.

In some embodiments, the first timer is configured for a location management function, LMF, entity and the first timer is commonly maintained by the terminal device, the LMF entity, an access network device, or a transmission reception point, TRP.

In some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 3, and are not further described herein for brevity.

Figure 7 shows a schematic block diagram of an LMF entity 500 according to an embodiment of the present application. As shown in fig. 7, the LMF entity 500 includes:

a communication unit 510 configured to send first information to a terminal device;

In some embodiments, the communication unit 510 is further configured to receive first request information sent by the terminal device, where the first request information is used to request PRS configuration as needed.

In some embodiments, the target information includes one of:

In some embodiments, the communication unit 510 is also configured to initiate an on-demand PRS configuration request.

the terminal device sends information requesting PRS configuration as needed.

the terminal equipment receives a message for indicating the terminal equipment to perform PRS measurement by using default PRS configuration information;

In some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the LMF entity 500 according to the embodiments of the present application may correspond to the LMF entity in the embodiments of the methods of the present application, and that the foregoing and other operations and/or functions of each unit in the LMF entity 500 are respectively for implementing the corresponding flow of the LMF entity in the method 200 shown in fig. 3, and are not repeated herein for brevity.

Fig. 8 shows a schematic block diagram of a terminal device 600 according to an embodiment of the present application. As shown in fig. 8, the terminal apparatus 600 includes:

a communication unit 610, configured to receive first information, where the first information is used to indicate PRS configuration information of a target positioning reference signal, or the first information is used to indicate an index of the PRS configuration information of the target;

a processing unit 620 for replacing the stored PRS configuration information with the target PRS configuration information and performing PRS measurements using the target PRS configuration information.

In some embodiments, the communication unit 610 is further configured to send first request information for requesting PRS configuration on demand.

In some embodiments, the target information includes one of:

It should be understood that the terminal device 600 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 600 are respectively for implementing the corresponding flow of the terminal device in the method 300 shown in fig. 5, which is not described herein for brevity.

Fig. 9 is a schematic structural diagram of a communication device 700 provided in an embodiment of the present application. The communication device 700 shown in fig. 9 comprises a processor 710, from which the processor 710 may call and run a computer program to implement the method in the embodiments of the present application.

In some embodiments, as shown in fig. 9, the communication device 700 may also include a memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

In some embodiments, as shown in fig. 9, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may transmit information or data to other devices, or receive information or data transmitted by other devices.

Among other things, transceiver 730 may include a transmitter and a receiver. Transceiver 730 may further include antennas, the number of which may be one or more.

In some embodiments, the communication device 700 may be specifically an LMF entity in the embodiments of the present application, and the communication device 700 may implement corresponding flows implemented by the LMF entity in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the communication device 700 may be specifically a terminal device in the embodiments of the present application, and the communication device 700 may implement a corresponding flow implemented by the terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

Fig. 10 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 800 shown in fig. 10 includes a processor 810, and the processor 810 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

In some embodiments, as shown in fig. 10, apparatus 800 may further comprise a memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the methods in embodiments of the present application.

Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

In some embodiments, the apparatus 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

In some embodiments, the apparatus 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

In some embodiments, the apparatus may be applied to an LMF entity in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the LMF entity in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the apparatus may be applied to a terminal device in the embodiments of the present application, and the apparatus may implement a corresponding flow implemented by the terminal device in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 11 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 11, the communication system 900 includes a terminal device 910 and an LMF entity 920.

The terminal device 910 may be configured to implement the corresponding function implemented by the terminal device in the above method, and the LMF entity 920 may be configured to implement the corresponding function implemented by the LMF entity in the above method, which is not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

In some embodiments, the computer-readable storage medium may be applied to the LMF entity in the embodiments of the present application, and the computer program causes a computer to execute the corresponding procedure implemented by the LMF entity in the methods in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the computer readable storage medium may be applied to a terminal device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

In some embodiments, the computer program product may be applied to the LMF entity in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the LMF entity in the methods in the embodiments of the present application, which are not described herein for brevity.

In some embodiments, the computer program product may be applied to a terminal device in an embodiment of the present application, and the computer program instructions cause the computer to execute corresponding processes implemented by the terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

In some embodiments, the computer program may be applied to the LMF entity in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the LMF entity in each method in the embodiments of the present application, which is not described herein for brevity.

In some embodiments, the computer program may be applied to a terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solutions of the present application may be embodied in essence or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

the method comprises the steps that a terminal device receives first information, wherein the first information is used for indicating PRS configuration information of a target positioning reference signal, or the first information is used for indicating an index of the PRS configuration information;

the terminal device uses the target PRS configuration information to make PRS measurements during a first timer operation.
The method of claim 1, wherein the method further comprises:

the terminal equipment sends first request information, wherein the first request information is used for requesting PRS configuration according to requirements.
The method of claim 2, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
The method of claim 2 or 3, wherein the first request information includes target information indicating to update PRS configuration information.
The method of claim 4, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
The method of any one of claims 1 to 5, wherein the start or restart condition of the first timer comprises at least one of:

the terminal equipment receives feedback information aiming at information for requesting PRS configuration according to requirements;

the terminal equipment receives an auxiliary information transmission message for PRS configuration;

and the terminal equipment sends information for requesting PRS configuration according to the requirement.
The method of any one of claims 1 to 6, wherein the stop condition of the first timer comprises at least one of:

the terminal equipment receives a message for indicating the terminal equipment to perform PRS measurement by using default PRS configuration information;

the terminal device receives an auxiliary information transmission message for PRS configuration.
The method of any one of claims 1 to 7, wherein the method further comprises:

In case the first timer expires, the terminal device performs at least one of:

performing PRS measurement by using default PRS configuration information;

performing PRS measurements using the last stored PRS configuration information;

retransmitting information for requesting PRS configuration as needed;

stopping receiving or measuring PRS;

stopping positioning.
A method according to any one of claims 1 to 8, wherein the first timer is configured for a location management function, LMF, entity and the first timer is maintained jointly by the terminal device, the LMF entity, an access network device or a transmission reception point, TRP.
A method of wireless communication, comprising:

the LMF entity of the positioning management function sends first information to the terminal equipment;

the first information is used for indicating the configuration information of the target positioning reference signal PRS, or is used for indicating the index of the configuration information of the target PRS; the target PRS configuration information is used for PRS measurements by the terminal device during a first timer operation.
The method of claim 10, wherein the method further comprises:

and the LMF entity receives first request information sent by the terminal equipment, wherein the first request information is used for requesting PRS configuration according to requirements.
The method of claim 11, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
The method of claim 11 or 12, wherein the first request information includes target information indicating to update PRS configuration information.
The method of claim 13, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
The method of claim 10, wherein the method further comprises:

the LMF entity initiates an on-demand PRS configuration request.
The method of any one of claims 10 to 15, wherein the start or restart condition of the first timer comprises at least one of:

the terminal equipment receives feedback information aiming at information for requesting PRS configuration according to requirements;

the terminal equipment receives an auxiliary information transmission message for PRS configuration;

and the terminal equipment sends information for requesting PRS configuration according to the requirement.
The method of any one of claims 10 to 16, wherein the stop condition of the first timer comprises at least one of:

the terminal equipment receives a message for indicating the terminal equipment to perform PRS measurement by using default PRS configuration information;

the terminal device receives an auxiliary information transmission message for PRS configuration.
A method according to any one of claims 10 to 17, wherein the first timer is configured for a location management function, LMF, entity and the first timer is maintained jointly by the terminal device, the LMF entity, an access network device or a transmission reception point, TRP.
A method of wireless communication, comprising:

the method comprises the steps that a terminal device receives first information, wherein the first information is used for indicating PRS configuration information of a target positioning reference signal, or the first information is used for indicating an index of the PRS configuration information;

the terminal device replaces the stored PRS configuration information with the target PRS configuration information, and uses the target PRS configuration information to make PRS measurements.
The method of claim 19, wherein the method further comprises:

The terminal equipment sends first request information, wherein the first request information is used for requesting PRS configuration according to requirements.
The method of claim 20, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
The method of claim 20 or 21, wherein the first request information includes target information indicating to update PRS configuration information.
The method of claim 22, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
A terminal device, comprising:

a communication unit, configured to receive first information, where the first information is used to indicate PRS configuration information of a target positioning reference signal, or the first information is used to indicate an index of the PRS configuration information of the target;

and the processing unit is used for carrying out PRS measurement by using the target PRS configuration information during the operation of the first timer.
The terminal device of claim 24, wherein the communication unit is further configured to send first request information requesting PRS configuration on demand.
The terminal device of claim 25, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
The terminal device of claim 25 or 26, wherein the first request information includes target information indicating to update PRS configuration information.
The terminal device of claim 27, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
The terminal device according to any of the claims 24 to 28, wherein the start or restart condition of the first timer comprises at least one of:

the terminal equipment receives feedback information aiming at information for requesting PRS configuration according to requirements;

the terminal equipment receives an auxiliary information transmission message for PRS configuration;

and the terminal equipment sends information for requesting PRS configuration according to the requirement.
The terminal device according to any of the claims 24 to 29, wherein the stop condition of the first timer comprises at least one of:

The terminal equipment receives a message for indicating the terminal equipment to perform PRS measurement by using default PRS configuration information;

the terminal device receives an auxiliary information transmission message for PRS configuration.
The terminal device according to any of the claims 24 to 30, wherein in case the first timer expires, the terminal device performs at least one of:

performing PRS measurement by using default PRS configuration information;

performing PRS measurements using the last stored PRS configuration information;

retransmitting information for requesting PRS configuration as needed;

stopping receiving or measuring PRS;

stopping positioning.
A terminal device according to any of claims 24 to 31, wherein the first timer is configured for a location management function, LMF, entity and the first timer is maintained jointly by the terminal device, the LMF entity, an access network device or a transmission reception point, TRP.
An LMF entity, comprising:

a communication unit for transmitting first information to a terminal device;

the first information is used for indicating the configuration information of the target positioning reference signal PRS, or is used for indicating the index of the configuration information of the target PRS; the target PRS configuration information is used for PRS measurements by the terminal device during a first timer operation.
An LMF entity as recited in claim 33, wherein the communication unit is further configured to receive first request information sent by the terminal device, the first request information being used to request PRS configuration on demand.
The LMF entity of claim 34, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
An LMF entity as claimed in claim 34 or 35, wherein the first request information includes target information indicating to update PRS configuration information.
An LMF entity as recited in claim 36, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
The LMF entity of claim 33, wherein the communication unit is further configured to initiate an on-demand PRS configuration request.
An LMF entity as recited in any one of claims 33-38, wherein a start or restart condition of the first timer comprises at least one of:

The terminal equipment receives feedback information aiming at information for requesting PRS configuration according to requirements;

the terminal equipment receives an auxiliary information transmission message for PRS configuration;

and the terminal equipment sends information for requesting PRS configuration according to the requirement.
An LMF entity as recited in any one of claims 33-39, wherein the stop condition of the first timer comprises at least one of:

the terminal equipment receives a message for indicating the terminal equipment to perform PRS measurement by using default PRS configuration information;

the terminal device receives an auxiliary information transmission message for PRS configuration.
An LMF entity as recited in any one of claims 33-40, wherein the first timer is configured for a location management function, LMF, entity and the first timer is commonly maintained by the terminal device, the LMF entity, an access network device, or a transmission reception point, TRP.
A terminal device, comprising:

a communication unit, configured to receive first information, where the first information is used to indicate PRS configuration information of a target positioning reference signal, or the first information is used to indicate an index of the PRS configuration information of the target;

And the processing unit is used for replacing the stored PRS configuration information with the target PRS configuration information and carrying out PRS measurement by using the target PRS configuration information.
The terminal device of claim 42, wherein the communication unit is further configured to send first request information requesting PRS configuration on demand.
The terminal device of claim 43, wherein the first request information comprises PRS configuration information corresponding to a current traffic type or positioning accuracy or an index of PRS configuration information corresponding to a current traffic type or positioning accuracy.
The terminal device of claim 43 or 44, wherein the first request information includes target information indicating updating PRS configuration information.
The terminal device of claim 45, wherein the target information comprises one of:

the positioning accuracy is improved, the positioning accuracy is reduced, and no positioning service exists currently.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 9, or to perform the method according to any of claims 19 to 23.
An LMF entity, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 10 to 18.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 19 to 23.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 10 to 18.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 19 to 23.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 10 to 18.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 19 to 23.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 10 to 18.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 9 or to perform the method according to any one of claims 19 to 23.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 10 to 18.