Transmission control method and device of sounding reference signal, terminal, base station and LMF

Abstract

The invention provides a transmission control method and device of a sounding reference signal, a terminal, a base station and an LMF. The method is applied to a terminal, and comprises: receiving target information sent by a service base station, the target information being used for indicating a duration of sending an SRS and / or a moment of stopping sending the SRS; and according to the target information, stopping sending the SRS. According to the scheme, the terminal can stop sending the SRS based on the target information, interaction between the terminal and the network side can be reduced, and the power consumption of the terminal is reduced while positioning is supported.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, device, terminal, base station and LMF for controlling transmission of a sounding reference signal. Background Art

[0002] When the UE starts positioning in the inactive state, in order to ensure that the terminal can standby for up to 6 months, the terminal power consumption needs to be reduced as much as possible. However, in the existing positioning service process, whether it is periodic SRS or semi-persistent SRS, the terminal needs to interact with the network continuously to complete the sending of the stop signal, which is not conducive to reducing the terminal power consumption. Therefore, it is necessary to find a UL SRS signal transmission control method suitable for use in the inactive state or in the idle state to minimize the interaction between the UE and the network, and further reduce the terminal power consumption while achieving more efficient support for positioning in the inactive / idle state. Summary of the invention

[0003] The purpose of the present application is to provide a method, device, terminal, base station and LMF for controlling the transmission of a sounding reference signal, so as to solve the problem of high terminal power consumption in the transmission control scheme of SRS in the prior art.

[0004] In a first aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a terminal, including:

[0005] receiving target information sent by a serving base station, where the target information is used to indicate a duration of sending an SRS and / or a time to stop sending the SRS;

[0006] According to the target information, stop sending the SRS.

[0007] Optionally, the receiving target information sent by the serving base station includes:

[0008] receiving the target information sent by the serving base station through target signaling;

[0009] The target signaling includes one of the following:

[0010] Radio Resource Control (RRC) signaling;

[0011] Signaling during random access;

[0012] Media access control element MAC CE;

[0013] Broadcast signaling.

[0014] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0015] Optionally, the stopping sending the SRS according to the target information includes:

[0016] When receiving the first message sent by the serving base station, start sending the SRS and start a first timer;

[0017] When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

[0018] Optionally, after starting to send the SRS and starting a first timer, the method further includes:

[0019] When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

[0020] In a second aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a serving base station, including:

[0021] The target information is sent to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0022] Optionally, before sending the target information to the terminal, the method further includes:

[0023] receiving the target information sent by the LMF entity; or,

[0024] The target information is determined according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

[0025] Optionally, after receiving the target information sent by the LMF entity, or after determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements, and the terminal capabilities, the method further includes:

[0026] The target information is sent to the target candidate base station.

[0027] Optionally, after determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements, and the terminal capabilities, the method further includes:

[0028] The target information is sent to the location management function LMF entity.

[0029] Optionally, the sending target information to the terminal includes:

[0030] Sending the target information to the terminal through target signaling;

[0031] The target signaling includes one of the following:

[0032] Radio Resource Control (RRC) signaling;

[0033] Signaling during random access;

[0034] Media access control element MAC CE;

[0035] Broadcast signaling.

[0036] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0037] Optionally, the transmission control method of the sounding reference signal further includes:

[0038] After sending the first message to the terminal, starting a second timer; and,

[0039] When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

[0040] In a third aspect, in order to solve the above technical problems, an embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to an LMF entity, including:

[0041] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0042] The target information is sent to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0043] Optionally, the acquiring the first information includes:

[0044] determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements, and terminal capabilities; or,

[0045] The target information sent by the serving base station is received.

[0046] Optionally, the above-mentioned sounding reference signal SRS transmission control method further includes:

[0047] When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station;

[0048] The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

[0049] In a fourth aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a target candidate base station, including:

[0050] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0051] According to the target information, stop receiving the SRS.

[0052] Optionally, the acquiring target information includes:

[0053] receiving the target information sent by the serving base station; or,

[0054] Receive the target information sent by the LMF entity.

[0055] Optionally, the stopping receiving the SRS according to the target information includes:

[0056] Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer;

[0057] When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

[0058] In a fifth aspect, in order to solve the above technical problems, an embodiment of the present application provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor is used to read the program in the memory and execute the following process:

[0059] receiving target information sent by a serving base station, where the target information is used to indicate a duration of sending an SRS and / or a time to stop sending the SRS;

[0060] According to the target information, stop sending the SRS.

[0061] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0062] receiving the target information sent by the serving base station through target signaling;

[0063] The target signaling includes one of the following:

[0064] Radio Resource Control (RRC) signaling;

[0065] Signaling during random access;

[0066] Media access control element MAC CE;

[0067] Broadcast signaling.

[0068] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0069] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0070] When receiving the first message sent by the serving base station, start sending the SRS and start a first timer;

[0071] When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

[0072] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0073] When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

[0074] In a sixth aspect, in order to solve the above technical problems, the embodiments of the present application provide a serving base station, a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor is used to read the program in the memory and execute the following process:

[0075] The target information is sent to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0076] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0077] receiving the target information sent by the LMF entity; or,

[0078] The target information is determined according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

[0079] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0080] The target information is sent to the target candidate base station.

[0081] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0082] The target information is sent to the location management function LMF entity.

[0083] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0084] Sending the target information to the terminal through target signaling;

[0085] The target signaling includes one of the following:

[0086] Radio Resource Control (RRC) signaling;

[0087] Signaling during random access;

[0088] Media access control element MAC CE;

[0089] Broadcast signaling.

[0090] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0091] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0092] After sending the first message to the terminal, starting a second timer; and,

[0093] When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

[0094] In a seventh aspect, in order to solve the above technical problems, an embodiment of the present application provides a LMF entity, including: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor is used to read the program in the memory and execute the following process:

[0095] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0096] The target information is sent to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0097] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0098] determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements, and terminal capabilities; or,

[0099] The target information sent by the serving base station is received.

[0100] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0101] When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station;

[0102] The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

[0103] In an eighth aspect, in order to solve the above technical problems, the embodiments of the present application provide a candidate base station, a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor is used to read the program in the memory and execute the following process:

[0104] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0105] According to the target information, stop receiving the SRS.

[0106] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0107] receiving the target information sent by the serving base station; or,

[0108] Receive the target information sent by the LMF entity.

[0109] Optionally, the processor is further configured to read a program in a memory and execute the following process:

[0110] Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer;

[0111] When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

[0112] In a ninth aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control device of a sounding reference signal, which is applied to a terminal, including:

[0113] A first receiving module is used to receive target information sent by a serving base station, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS;

[0114] The first processing module is configured to stop sending the SRS according to the target information.

[0115] In a tenth aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control device of a sounding reference signal, which is applied to a serving base station, including:

[0116] The first sending module is used to send target information to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0117] In an eleventh aspect, in order to solve the above technical problems, an embodiment of the present application provides a transmission control device for a sounding reference signal, which is applied to an LMF entity, including:

[0118] A first acquisition module is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS;

[0119] The fourth sending module is used to send the target information to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0120] In a twelfth aspect, in order to solve the above technical problem, an embodiment of the present application provides a transmission control device for a sounding reference signal, which is applied to a target candidate base station, including:

[0121] A second acquisition module is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time when the SRS is stopped;

[0122] The fifth processing module is configured to stop receiving the SRS according to the target information.

[0123] In the thirteenth aspect, in order to solve the above-mentioned technical problems, an embodiment of the present application provides a processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the transmission control method of the detection reference signal as described in the first aspect, or the transmission control method of the detection reference signal as described in the second aspect, or the transmission control method of the detection reference signal as described in the third aspect, or the transmission control method of the detection reference signal as described in the fourth aspect.

[0124] The beneficial effects of the above technical solution of the present application are as follows:

[0125] In the above scheme, the terminal receives the target information sent by the serving base station, and the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS; further, according to the target information, the SRS is stopped. Through this scheme, the terminal can stop sending the SRS based on the target information, and the terminal does not need to interact with the network continuously to stop sending the SRS. In this way, it can achieve the goal of supporting positioning while reducing the interaction between the terminal and the network side and reducing the power consumption of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0126] Figure 1 This is a schematic diagram of the positioning architecture applicable to NG-RAN;

[0127] Figure 2 Positioning business process diagram for location services (LCS);

[0128] Figure 3 It is the flow chart of uplink positioning of LPP network;

[0129] Figure 4 Flowchart for configuring SRS for a base station;

[0130] Figure 5 This is one of the flow charts of the transmission control method of the sounding reference signal according to an embodiment of the present application;

[0131] Figure 6 This is a second flowchart of the transmission control method of the sounding reference signal according to an embodiment of the present application;

[0132] Figure 7 This is a third flowchart of the transmission control method of the sounding reference signal according to an embodiment of the present application;

[0133] Figure 8 This is a fourth flowchart of the transmission control method of the sounding reference signal according to an embodiment of the present application;

[0134] Fig. 9 This is a fifth flowchart of the method for controlling transmission of a sounding reference signal according to an embodiment of the present application;

[0135] Fig.10 This is a sixth flowchart of the method for controlling transmission of a sounding reference signal according to an embodiment of the present application;

[0136] Fig.11 This is a seventh flowchart of the method for controlling transmission of a sounding reference signal according to an embodiment of the present application;

[0137] Fig.12This is one of the structural block diagrams of the transmission control device of the sounding reference signal according to the embodiment of the present application;

[0138] Fig.13 This is a second structural block diagram of the transmission control device of the sounding reference signal according to an embodiment of the present application;

[0139] Fig.14 This is a third structural block diagram of the transmission control device of the sounding reference signal according to an embodiment of the present application;

[0140] Fig.15 This is a fourth structural block diagram of the transmission control device of the sounding reference signal according to an embodiment of the present application;

[0141] Fig.16 A schematic diagram of the structure of a terminal according to an embodiment of the present application;

[0142] Fig.17 This is a schematic diagram of the structure of a serving base station according to an embodiment of the present application;

[0143] Fig.18 This is a schematic diagram of the structure of the LMF entity in an embodiment of the present application;

[0144] Fig.19 A schematic diagram of the structure of a candidate base station according to an embodiment of the present application. DETAILED DESCRIPTION

[0145] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0146] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0147] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0148] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0149] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0150] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0151] The following first introduces the contents involved in the solution provided in the embodiment of the present application.

[0152] 1. Positioning architecture for NG-RAN

[0153] like Figure 1 As shown, it shows a schematic diagram of a positioning architecture suitable for NG-RAN.

[0154] In such Figure 1 In the positioning architecture shown, the Location Management Function (LMF) entity is responsible for selecting the positioning method and triggering the corresponding positioning measurement, and can calculate the final positioning result and accuracy; the NG Radio Access Network (NG-RAN) is used to send positioning reference signals, or perform positioning measurements based on auxiliary information; the User Equipment (UE) is used to send positioning reference signals, or perform positioning measurements based on auxiliary information, and can also calculate the final positioning result and accuracy based on the measurement results. Among them, the LMF includes: the control plane is called the Enhanced Serving Mobile Location Centre (E-SMLC) and the user plane is called the Service Location Protocol (SLP).

[0155] 2. Location Services (LCS) positioning business process.

[0156] In such Figure 2In the positioning service process shown, the LCS positioning service request (Location Service Request) from the UE or LCS client (client) or access and mobility management function (Access and Mobility Management Function, AMF) entity is sent to LMF through AMF to start the LMF positioning service. LMF finally obtains the terminal's location information through step 3a (NG-RAN Node Procedures, NG radio access network node process) and step 3b (UE process), and sends a location service response (Location Services Response) to AMF in step 4, carrying information such as the terminal location.

[0157] 3. LPP network uplink positioning process

[0158] R16 introduces uplink positioning methods related to Radio Access Technology (RAT), including UL-TDOA (uplink time difference of arrival positioning method) and UL-AOA (uplink angle of arrival positioning method). In these two positioning methods, the serving base station and multiple transmission points (TRPs) will receive and measure the uplink positioning reference signal SRS transmitted by the UE based on the auxiliary data information obtained from the LMF, including the horizontal angle of arrival (Azimuth Angle of Arrival, A-AoA), the vertical angle of arrival (Zenith Angle of Arrival, Z-AoA), the relative time of arrival (Relative Time of Arrival, RTOA) and the reference signal receiving power (Reference Signal Receiving Power, RSRP) and other measurements. The serving base station and multiple TRPs will pass their measurement results to the LMF, and the LMF will perform the final position calculation based on the SRS measurement results and other configuration information.

[0159] See also Figure 3 Specifically, the uplink positioning process may include the following steps:

[0160] Step 0: LMF may use the LMF-triggered TRP Information Exchange Procedure to obtain the TRP information required for uplink positioning (UL-AOA or UL-TDOA) positioning.

[0161] Step 1: LMF may obtain the positioning capability of the target UE based on the LPP protocol (LPP Capability Transfer).

[0162] Step 2: LMF sends NRPPa POSITIONING INFORMATION REQUEST signaling to the serving gNB, requesting the uplink SRS configuration information of the target UE.

[0163] Step 3: The serving gNB determines the available uplink SRS resource allocation and configures the uplink SRS resource set for the target UE through step 3a (gNB determines ULSRS Resources).

[0164] Step 4: The serving gNB reports the uplink SRS configuration information to the LMF through NRPPa POSITIONING INFORMATION RESPONSE signaling.

[0165] Step 5: LMF may request to activate UE SRS transmission, specifically:

[0166] Through step 5a, an NRPPa POSITIONING ACTIVATION REQUEST message is sent to the serving gNB of the target UE, including the semi-persistent SP SRS resources or aperiodic SRS resources to be activated.

[0167] Subsequently, the serving gNB activates uplink SRS transmission in step 5b (Activate UE SRS transmission). The target UE starts transmitting uplink SRS according to the uplink SRS resource configuration. The time domain behavior of the SRS is configured by the gNB.

[0168] In step 5c, an NRPPa POSITIONING ACTIVATION RESPONSE message is sent to the LMF entity.

[0169] Step 6: LMF sends uplink SRS configuration information to the selected multiple gNBs via NRPPa MEASUREMENT REQUEST signaling. The configuration information includes all information for gNB / TRP to perform uplink measurements.

[0170] Step 7: Each gNB configured in Step 6 performs uplink SRS measurements.

[0171] Step 8: Each gNB reports the uplink SRS measurement results to the LMF via NRPPa Measurement Response signaling.

[0172] Step 9: For the case of SP SRS (Semi-persistent Sounding Reference Signal) or AP SRS (Aperiodic Sounding Reference Signal), the LMF sends an NRPPa POSITIONING DEACTIVATION message to the serving gNB to stop the transmission of SP SRS or AP SRS.

[0173] 4. Base station configuration SRS signal process

[0174] See also Figure 4 , mainly including: the network side (Network) sends an RRC reconfiguration signaling (RRCReconfiguration) for configuring SRS to the user terminal (UE), and the UE sends an RRC reconfiguration completion signaling (RRCReconfigurationComplete) to the network side to complete the SRS configuration process.

[0175] 5. Base station activation SRS signal process

[0176] For the semi-persistent uplink sounding reference signal UL-SRS, the serving base station activates / deactivates the semi-persistent SRS by sending a MAC CE. For the aperiodic UL-SRS, the serving base station activates the signal through downlink control information (DCI).

[0177] It can be seen from the above positioning process that in the current positioning service process, when the configured sounding reference signal (SRS) is a semi-continuous type of signal, the existing mechanism requires the base station to send a medium access control control element (MAC CE) to notify the user terminal (UE) to start sending SRS. After each base station has completed the measurement, the serving base station sends a MAC CE to notify the UE to stop sending the signal. When the configured SRS signal is a periodic signal, the existing mechanism does not require the base station to activate the SRS. As long as the UE receives the configuration, it will continue to send periodic SRS until the serving base station sends a release signaling to release the SRS resource.

[0178] When the UE starts positioning in the inactive state, in order to ensure that the terminal can standby for up to 6 months, the terminal power consumption needs to be reduced as much as possible. However, the above mechanism is not conducive to reducing the terminal power consumption, because both periodic SRS and semi-persistent SRS require the terminal to interact with the network continuously to complete the sending of the stop signal. Therefore, it is necessary to find a UL SRS signal transmission control method suitable for use in the inactive state or in the idle state to minimize the interaction between the UE and the network, and further reduce the terminal power consumption while achieving more efficient support for positioning in the inactive / idle state.

[0179] Based on the above, the embodiments of the present application provide a method, device, terminal, base station and LMF for controlling transmission of a sounding reference signal, so as to solve the problem of high terminal power consumption in the transmission control scheme of SRS in the prior art.

[0180] See also Figure 5 The embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a terminal and includes:

[0181] Step 101, receiving target information sent by a serving base station, where the target information is used to indicate the duration of sending an SRS and / or the time to stop sending the SRS;

[0182] Optionally, step 101 includes: receiving the target information sent by the serving base station through target signaling; wherein the target signaling includes one of the following:

[0183] Radio Resource Control (RRC) signaling;

[0184] Signaling during random access;

[0185] Media access control element MAC CE;

[0186] Broadcast signaling.

[0187] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0188] Step 102: Stop sending the SRS according to the target information.

[0189] In this embodiment, the terminal can determine when to stop sending SRS based on the target information, and the terminal can stop sending SRS without the need for continuous interaction with the network. In this way, it is possible to reduce the interaction between the terminal and the network side and reduce terminal power consumption while supporting positioning.

[0190] In one embodiment, in the above step 102, stopping sending the SRS according to the target information includes:

[0191] When receiving the first message sent by the serving base station, start sending the SRS and start a first timer;

[0192] When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

[0193] In an exemplary application scenario, if SRS is a periodic signal, the first information is the confirmation (ACK) information replied by the serving base station. Specifically, when the terminal determines that the positioning service event is met, it sends a preamble code or RRC signaling to request the serving base station to send SRS. After sending the SRS request, if the terminal receives the ACK information (i.e., the first message) replied by the serving base station, the first timer is started until the first timer reaches the duration of sending the SRS and / or the time to stop sending the SRS indicated by the target information, stops sending the SRS, and completes the sending of the positioning signal for this positioning event. In this way, the SRS can be stopped without the base station sending a release signaling to the terminal, which reduces the interaction overhead between the terminal and the network, and also reduces the power consumption of the terminal.

[0194] In an exemplary application scenario, if SRS is a non-periodic signal, the first information is an activation command sent by the service base station. Specifically, when the terminal determines that the positioning service event is met, it sends a preamble or RRC signaling to request the service base station to send SRS. After receiving the SRS sending request of the terminal, the service base station notifies the LMF to receive the SRS sending request of the terminal, and the LMF notifies the candidate base station to start the process of receiving SRS; after receiving the response message from the candidate base station, the LMF completes the preparation work and sends a response message to the service base station to notify the service base station to activate the SRS signal; the service base station sends an activation command (i.e., the first message) to the terminal according to the response message sent by the LMF; after receiving the activation command, the terminal starts the first timer until the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stops sending the SRS, and completes the positioning signal sending of this positioning event. In this way, the stop sending of SRS can be completed without deactivating the command and process, which reduces the interaction overhead between the terminal and the network, and also reduces the power consumption of the terminal.

[0195] In one embodiment, after starting to send the SRS and starting the first timer, the method further includes:

[0196] When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

[0197] Optionally, the situation where the SRS fails includes, but is not limited to: the terminal leaves the SRS valid area and reaches the valid time of the SRS.

[0198] In an exemplary scenario, if the terminal leaves the valid area configured for SRS while sending SRS, the SRS resource will be invalid in the new cell, and the UE should stop sending SRS.

[0199] For example, in a specific example, when the terminal starts to send SRS and the stop sending deadline indicated by the target information has not yet arrived, if the terminal leaves the original SRS valid area and enters a new cell (the new cell does not belong to the valid area), the terminal should stop sending SRS after entering the new cell, and the stop timing and the first timer should be set to 0. Furthermore, if the terminal returns to the original SRS valid area again and the original SRS resource is not invalid, the original SRS resource configuration can continue to be used. After the terminal detects the positioning event, the SRS sending and stopping workflow is resumed.

[0200] In addition, for other candidate base stations notified by LMF to receive SRS, due to the movement of the terminal, the candidate base stations cannot receive the expected SRS signal, and the third timer of these candidate base stations will continue to run until the third timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, and stops receiving the SRS.

[0201] See also Figure 6 The embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a serving base station, including:

[0202] Step 201: Send target information to a terminal, where the target information is used to indicate the duration of sending an SRS and / or the time to stop sending the SRS.

[0203] Optionally, sending the target information to the terminal includes: sending the target information to the terminal through target signaling; wherein the target signaling includes one of the following:

[0204] Radio Resource Control (RRC) signaling;

[0205] Signaling during random access;

[0206] Media access control element MAC CE;

[0207] Broadcast signaling.

[0208] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0209] In the above embodiment, the service base station sends target information to the terminal, so that the terminal can determine when to stop sending SRS according to the target information. The terminal does not need to interact with the network continuously to stop sending SRS. In this way, it is possible to reduce the interaction between the terminal and the network side and reduce the power consumption of the terminal while supporting positioning.

[0210] In one embodiment, before the above step 201 sends the target information to the terminal, the method further includes: acquiring the target information, including one of the following two methods:

[0211] Method 1: receiving the target information sent by the LMF entity;

[0212] In this method, the LMF entity determines the time to stop sending the SRS or the continuous sending duration based on at least one of the SRS resource configuration, SRS characteristics, positioning service requirements and terminal capabilities, and sends the time to stop sending the SRS or the continuous sending duration to the serving base station. The serving base station can configure the time to stop sending the SRS signal or the continuous sending duration for the terminal through RRC signaling. The RRC signaling may include: RRC reconfiguration signal or RRC release signaling.

[0213] For example, Fig.11 In step 2 (LMF determines UL SRS Resources), LMF determines the target information and SRS resources, and sends a positioning information request (step 3. NRPPa POSITIONINGINFORMATION REQUEST) signaling to the serving gNB to request the uplink SRS configuration information of the target UE, which carries the target information.

[0214] in, Fig.11 Explanation of other steps in Figure 3 Similarly, the description is not repeated here.

[0215] Mode 2: Determine the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

[0216] In this manner, the serving base station determines the time to stop sending the SRS or the duration of continuous sending according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capabilities. The serving base station may configure the time to stop sending the SRS signal or the duration of continuous sending for the terminal through RRC signaling. The RRC signaling may include: an RRC reconfiguration signal or an RRC release signaling.

[0217] For example, Fig. 9In step 3, gNB determines UL SRS Resources, the serving base station determines the target information and SRS resources, and reports the uplink SRS configuration information to the LMF through the positioning information response (step 5c. NRPPa POSITIONING INFORMATIONRESPONSE) signaling, which carries the target information.

[0218] in, Fig. 9 Explanation of other steps in Figure 3 Similarly, the description is not repeated here.

[0219] Further, in one embodiment, after receiving the target information sent by the LMF entity, or after determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements, and the terminal capabilities, the method further includes:

[0220] The target information is sent to the target candidate base station.

[0221] In this embodiment, target information is sent to the target candidate base station so that the target candidate base station stops receiving the SRS according to the target information.

[0222] Further, in one embodiment, after determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements, and the terminal capabilities, the method further includes:

[0223] The target information is sent to the location management function LMF entity.

[0224] In this embodiment, target information is sent to the LMF entity so that the LMF entity sends the target information to the target candidate base station, and the target candidate base station stops receiving the SRS according to the target information.

[0225] In one embodiment, the method further includes:

[0226] After sending the first message to the terminal, starting a second timer; and,

[0227] When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

[0228] Optionally, when the SRS is a periodic signal, the first information is confirmation (ACK) information replied by the serving base station; when the SRS is a non-periodic signal, the first information is an activation command sent by the serving base station.

[0229] In this embodiment, the base station can stop receiving the SRS based on the target information, which reduces the signaling interaction overhead and ensures the consistency of understanding of the cessation of signal transmission between the terminal side and the base station side.

[0230] See also Figure 7 The embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a LMF entity, including:

[0231] Step 301: Acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0232] Step 302: Send the target information to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0233] It should be pointed out that if the LMF entity determines the target information by itself, it can send the target information to the serving base station and the target candidate base station; if the LMF receives the target message sent by the serving base station, it does not need to send the target information to the serving base station, but only sends the target information to the candidate base station.

[0234] In this embodiment, by acquiring target information and sending the target information to the serving base station and / or the target candidate base station, the serving base station and the target candidate base station can stop receiving SRS based on the target information, thereby ensuring consistency in the understanding of the cessation of signal transmission between the terminal side and the base station side.

[0235] In one embodiment, in the above step 301, obtaining the first information includes one of the following methods:

[0236] Mode 1: determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capability;

[0237] In this method, the LMF entity determines the time to stop sending the SRS or the continuous sending duration based on at least one of the SRS resource configuration, SRS characteristics, positioning service requirements and terminal capabilities, and sends the time to stop sending the SRS or the continuous sending duration to the serving base station. The serving base station can configure the time to stop sending the SRS signal or the continuous sending duration for the terminal through RRC signaling. The RRC signaling may include: RRC reconfiguration signal or RRC release signaling.

[0238] For example, Fig.11In step 2 (LMF determines UL SRS Resources), LMF determines the target information and SRS resources, and sends a positioning information request (step 3. NRPPa POSITIONINGINFORMATION REQUEST) signaling to the serving gNB to request the uplink SRS configuration information of the target UE, which carries the target information.

[0239] in, Fig.11 Explanation of other steps in Figure 3 Similarly, the description is not repeated here.

[0240] Method 2: receiving the target information sent by the serving base station.

[0241] In this manner, the serving base station determines the time to stop sending the SRS or the duration of continuous sending according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capabilities. The serving base station may configure the time to stop sending the SRS signal or the duration of continuous sending for the terminal through RRC signaling. The RRC signaling may include: an RRC reconfiguration signal or an RRC release signaling.

[0242] For example, Fig. 9 In step 3, gNB determines UL SRS Resources, the serving base station determines the target information and SRS resources, and reports the uplink SRS configuration information to the LMF through the positioning information response (step 5c. NRPPa POSITIONING INFORMATIONRESPONSE) signaling, which carries the target information.

[0243] in, Fig. 9 Explanation of other steps in Figure 3 Similarly, the description is not repeated here.

[0244] In one embodiment, the transmission control method of the sounding reference signal SRS further includes:

[0245] When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station;

[0246] The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

[0247] Exemplarily, when the terminal determines that the positioning service event is met, the terminal sends a second message (such as RRC signaling or preamble) to the serving base station for requesting to send SRS. After receiving the SRS sending request of the terminal, the serving base station notifies the LMF that the SRS sending request of the terminal has been received. In this way, the LMF can determine that the serving base station has received the second message sent by the terminal; further, the LMF sends a third message to the target candidate base station, instructing the target candidate base station to start the workflow of receiving the SRS sent by the terminal, and starts the third timer, wherein the candidate target base station stops receiving the SRS sent by the terminal when it determines that the third timer reaches the duration of sending SRS indicated by the target information and / or the moment of stopping sending SRS. In this way, the target candidate base station can stop receiving SRS based on the target information, which reduces the signaling interaction overhead and ensures the consistency of understanding of the stop of signal sending between the terminal side and the base station side.

[0248] See also Figure 8 The embodiment of the present application provides a transmission control method of a sounding reference signal SRS, which is applied to a target candidate base station, including:

[0249] Step 401, obtain target information, the target information is used to indicate the duration of sending SRS and / or the moment to stop sending SRS.

[0250] Step 402: Stop receiving the SRS according to the target information.

[0251] In this embodiment, the target candidate base station obtains the target information, and based on the target information, can stop receiving the SRS, which reduces the signaling interaction overhead and ensures the consistency of understanding of the terminal side and the base station side on the stop of signal transmission.

[0252] In one embodiment, in the above step 401, obtaining the target information includes one of the following two methods:

[0253] Method 1: receiving the target information sent by the serving base station;

[0254] For example, the LMF entity determines the time to stop sending SRS or the duration of continuous sending according to at least one of the resource configuration of SRS, the characteristics of SRS, the positioning service requirements and the terminal capabilities, and sends the target information to the serving base station, which then sends the target information to the target candidate base station.

[0255] For example, the serving base station determines the SRS stop sending time or continuous sending duration based on at least one of SRS resource configuration, SRS characteristics, positioning service requirements and terminal capabilities, and sends target information to the target candidate base station.

[0256] Method 2: Receive the target information sent by the LMF entity.

[0257] For example, the LMF entity determines the time to stop sending SRS or the duration of continuous sending according to at least one of the resource configuration of SRS, the characteristics of SRS, the positioning service requirements and the terminal capabilities, and sends the target information to the target candidate base station.

[0258] For example, the serving base station determines the time to stop sending the SRS or the duration of continuous sending according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capabilities. Furthermore, the serving base station sends the target information to the LMF entity, and then the LMF entity sends the target information to the target candidate base station.

[0259] In one embodiment, in the above step 402, stopping receiving the SRS according to the target information includes:

[0260] Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer;

[0261] When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

[0262] Exemplarily, when the terminal determines that the positioning service event is met, the terminal sends a second message (such as RRC signaling or preamble) for requesting to send SRS to the serving base station. After receiving the SRS sending request of the terminal, the serving base station notifies the LMF that the SRS sending request of the terminal has been received; after the LMF determines that the serving base station has received the SRS sending request sent by the terminal, the LMF sends a third message to the target candidate base station, instructing the target candidate base station to start the workflow of receiving the SRS sent by the terminal and start the third timer; the target candidate base station starts the third timer according to the third message, and stops receiving the SRS sent by the terminal when it is determined that the third timer reaches the duration of sending SRS indicated by the target information and / or the moment of stopping sending SRS. In this way, the target candidate base station can stop receiving SRS based on the target information, which reduces the signaling interaction overhead and ensures the consistency of understanding of the stop of signal sending between the terminal side and the base station side.

[0263] The following describes the transmission control method of the sounding reference signal SRS of the present application in conjunction with a specific application scenario example.

[0264] Example 1: For periodic SRS

[0265] Application scenario: The terminal is in the effective area of ​​the SRS resource, and the terminal location needs to be determined in the deferred terminal terminated location request (Mobile Terminated Location Request, MT-LR) service or the terminal initiated location request (Mobile Originated Location Request, MO-LR) service. The specific interaction process includes the following:

[0266] Step 1: The serving base station configures a long duration for sending SRS for the terminal through RRC signaling.

[0267] The RRC signaling is an RRC reconfiguration signaling or an RRC release signaling, for example, using Fig. 9 Step 3a in the above method carries target information, and configures the terminal to send SRS for a longer duration or stop sending SRS. Fig. 9 Explanation of other steps in Figure 3 The same is not repeated here.

[0268] Step 2: When the terminal determines that it meets the positioning service event, it sends a preamble or RRC signaling to the serving base station to request the serving base station to send an SRS.

[0269] Step 3: After receiving the SRS sending request from the terminal, the service base station starts the second timer for timing, and when it is determined that the second timer reaches the stop sending time or duration indicated by the target information, stops timing and stops receiving SRS, and considers that the terminal has completed the sending of this positioning signal.

[0270] Step 4: After receiving the SRS sending request from the terminal, the serving base station will also notify the LMF entity that the SRS sending request from the terminal has been received. Optionally, the serving base station notifies the target candidate base station that it has received the SRS sending request from the terminal.

[0271] Step 5: The LMF entity instructs the target candidate base station through a third message to start receiving SRS signals. The target candidate base station starts the corresponding third timer, and stops receiving SRS signals after the third timer reaches the stop sending time or continuous sending duration indicated by the target information. Fig. 9 In step 9b of the process, the timer stops timing.

[0272] Step 6: After the terminal sends the SRS request, after receiving the ACK information replied by the base station, it also starts the first timer to count until the first timer reaches the continuous sending duration or the stop sending time indicated by the target information, stops sending the SRS signal, and sets the first timer to 0 and stops counting, completing the positioning signal sending of this event. Fig. 9In step 9a of the embodiment, the timer stops timing.

[0273] Example 2: For non-periodic SRS

[0274] Application scenario: The terminal is in the effective area of ​​the SRS resource, and the terminal location needs to be determined in the deferred terminal terminated location request (Mobile Terminated Location Request, MT-LR) service or the terminal initiated location request (Mobile Originated Location Request, MO-LR) service. The specific interaction process includes the following:

[0275] Step 1: The serving base station configures a long duration for sending SRS for the terminal through RRC signaling.

[0276] The RRC signaling is an RRC reconfiguration signaling or an RRC release signaling, for example, using Fig. 9 Step 3a in the process carries target information, and configures the terminal to send the SRS for a long time or to stop sending the SRS.

[0277] in, Fig. 9 Explanation of other steps in Figure 3 Similarly, the description is not repeated here. Fig.11 and Fig. 9 The difference is that Fig.11 In the process, the LMF entity determines the SRS resources and target information. Fig. 9 The serving base station determines the SRS resources and target information.

[0278] Step 2: When the terminal determines that it meets the positioning service event, it sends a preamble or RRC signaling to the serving base station to request the serving base station to send an SRS.

[0279] Step 3: After receiving the UE request, the serving base station notifies the LMF that the UE has sent the SRS request. Optionally, the serving base station notifies the surrounding neighboring receiving base stations that the UE has sent the SRS request.

[0280] Step 4: LMF notifies the target candidate base station to start receiving SRS signals, and completes the preparation work after receiving a response from the target candidate base station.

[0281] Step 5: The serving base station receives a response from the LMF, and notifies the serving base station that it is ready to activate the SRS.

[0282] Step 6: The serving base station sends an activation command to the terminal to start the SRS transmission.

[0283] The activation command may be carried by RRC signaling or by MAC CE. Fig. 9 Step 5b in the above procedure is to activate UE SRS transmission. Fig. 9 Explanation of other steps in Figure 3 The same is not repeated here.

[0284] Step 7: After receiving the activation command, the terminal starts to send the SRS and starts the first timer to ensure that the SRS is continuously sent within the continuous sending duration indicated by the target information or before the stop sending time.

[0285] Step 8: After the serving base station completes sending the activation command, it also starts the second timer and notifies the LMF entity. The LMF entity instructs the target candidate base station to start the third timer and instructs the target candidate base station to prepare to receive the SRS.

[0286] Step 9: When the first timer on the terminal side reaches the sending duration or the sending stop time indicated by the target information, the terminal stops sending the SRS and considers that the sending of the positioning signal has been completed. Fig. 9 In step 9a of the embodiment, the timer stops timing.

[0287] Step 10: When the second timer on the serving base station side reaches the sending duration or the sending stop time indicated by the target information, the serving base station stops receiving the SRS signal, and when the third timer on the target candidate base station side reaches the sending duration or the sending stop time indicated by the target information, the target candidate base station stops receiving the SRS signal. Fig. 9 In step 9b of the process, the timer stops timing.

[0288] Example 3: An application example of sending target information to a terminal through broadcast signaling.

[0289] The main steps include:

[0290] Step 1: The serving base station sends SRS configuration information in a broadcasting manner. The SRS configuration information carries target information, and the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0291] For example, using Fig.10 In the process, the NG-RAN node sends the target information to the UE by broadcasting RRC System Information.

[0292] Step 2: When the terminal detects that the positioning condition is met, the terminal may first receive SRS configuration information and store the SRS resource configuration.

[0293] Step 3: The terminal initiates a request to the network side through an RRC RESUME (RRC recovery) message, requesting to configure SRS dedicated resources and carrying a recommended SRS index.

[0294] Step 4: The network configures the required SRS index for the terminal and sends it back to the terminal via RRC signaling. At this point, the SRS resource configuration on the network side is completed.

[0295] Step 5: After receiving the configuration information from the network, the terminal completes the SRS resource configuration.

[0296] If it is a periodic SRS, the terminal uses the above example 1 to perform SRS transmission control. If a non-periodic SRS is configured, the terminal uses the above example 2 to perform SRS transmission control.

[0297] In the above scheme, the network provides target information for indicating the duration of SRS transmission or the time when it stops, so as to control the SRS transmission of the terminal, thereby ensuring the consistency of the end time of SRS between the network and the terminal, reducing the interaction between the terminal and the network, and reducing the power consumption of the terminal in the inactive state. At the same time, through the information interaction between the base station and the server, it is ensured that each base station receives and stops receiving SRS at the same time, improving the network measurement efficiency and resource utilization. Moreover, when SRS fails, the terminal can actively end the occurrence of SRS to maintain consistency with the network side, avoiding the problem of inconsistent understanding of the stop of signal transmission between the network and the terminal.

[0298] See also Fig.12 The embodiment of the present application provides a transmission control device 1200 for a sounding reference signal, which is applied to a terminal and includes:

[0299] The first receiving module 1201 is used to receive target information sent by a serving base station, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS;

[0300] The first processing module 1202 is configured to stop sending the SRS according to the target information.

[0301] Optionally, the first receiving module 1201 includes:

[0302] A first receiving submodule, configured to receive the target information sent by the serving base station through target signaling;

[0303] The target signaling includes one of the following:

[0304] Radio Resource Control (RRC) signaling;

[0305] Signaling during random access;

[0306] Media access control element MAC CE;

[0307] Broadcast signaling.

[0308] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0309] Optionally, the first processing module 1202 includes:

[0310] A first processing submodule, configured to start sending the SRS and start a first timer when receiving a first message sent by the serving base station;

[0311] The second processing submodule is configured to stop sending the SRS when the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information.

[0312] Optionally, the apparatus 1200 further includes:

[0313] The second processing module is used to stop sending the SRS when it is determined that the SRS is invalid, set the first timer to 0 and stop timing.

[0314] It should be noted here that the above-mentioned device 1200 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment on the above-mentioned terminal side, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0315] See also Fig.13 The embodiment of the present application provides a transmission control device 1300 for a sounding reference signal, which is applied to a serving base station and includes:

[0316] The first sending module 1301 is used to send target information to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0317] Optionally, the apparatus 1300 further includes:

[0318] A second receiving module is configured to receive the target information sent by the LMF entity; or

[0319] The first determination module is used to determine the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capability.

[0320] Optionally, the apparatus 1300 further includes:

[0321] The second sending module is used to send the target information to the target candidate base station.

[0322] Optionally, the apparatus 1300 further includes:

[0323] The third sending module is used to send the target information to the location management function LMF entity.

[0324] Optionally, the first sending module 1301 includes:

[0325] A first sending submodule, configured to send the target information to the terminal via target signaling;

[0326] The target signaling includes one of the following:

[0327] Radio Resource Control (RRC) signaling;

[0328] Signaling during random access;

[0329] Media access control element MAC CE;

[0330] Broadcast signaling.

[0331] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0332] Optionally, the apparatus 1300 further includes:

[0333] A third processing module is configured to start a second timer after sending the first message to the terminal; and

[0334] The fourth processing module is used to stop receiving the SRS when the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information.

[0335] It should be noted here that the above-mentioned device 1300 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment on the above-mentioned service base station side, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0336] See also Fig.14 The embodiment of the present application provides a transmission control device 1400 for a sounding reference signal, which is applied to an LMF entity and includes:

[0337] A first acquisition module 1401 is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS;

[0338] The fourth sending module 1402 is used to send the target information to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0339] Optionally, the first acquisition module 1401 includes:

[0340] A first acquisition submodule is configured to determine the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capability; or,

[0341] The second acquisition submodule is used to receive the target information sent by the serving base station.

[0342] Optionally, the apparatus 1400 further includes:

[0343] A fifth sending module, configured to send a third message to the target candidate base station when it is determined that the serving base station has received the second message sent by the terminal;

[0344] The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

[0345] It should be noted here that the above-mentioned device 1400 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment of the above-mentioned LMF entity side, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0346] See also Fig.15 The embodiment of the present application provides a transmission control device 1500 for a sounding reference signal, which is applied to a target candidate base station, including:

[0347] The second acquisition module 1501 is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS;

[0348] The fifth processing module 1502 is configured to stop receiving the SRS according to the target information.

[0349] Optionally, the second acquisition module 1501 includes:

[0350] A third acquisition submodule is configured to receive the target information sent by a serving base station; or

[0351] The fourth acquisition submodule is used to receive the target information sent by the LMF entity.

[0352] Optionally, the fifth processing module 1502 is specifically configured to:

[0353] Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer;

[0354] When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

[0355] It should be noted here that the above-mentioned device 1500 provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment on the above-mentioned target candidate base station side, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0356] See also Fig.16 , the embodiment of the present application provides a terminal, including: a processor 1610; and a memory 1620 connected to the processor 1610 through a bus interface, the memory 1620 is used to store programs and data used by the processor 1610 when performing operations, and the processor 1610 calls and executes the programs and data stored in the memory 1620. Among them, the transceiver 1600 is connected to the bus interface, and is used to receive and send data under the control of the processor 1610; the processor 1610 is used to read the program in the memory 1620 and perform the following processes:

[0357] receiving target information sent by a serving base station, where the target information is used to indicate a duration of sending an SRS and / or a time to stop sending the SRS;

[0358] According to the target information, stop sending the SRS.

[0359] Among them, Fig.16 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1610 and various circuits of memory represented by memory 1620 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1600 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including transmission media such as wireless channels, wired channels, and optical cables. For different user devices, the user interface 1630 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0360] The processor 1610 is responsible for managing the bus architecture and general processing, and the memory 1620 can store data used by the processor 1610 when performing operations.

[0361] Optionally, the processor 1610 is further configured to read a program in the memory 1620 and execute the following process:

[0362] receiving the target information sent by the serving base station through target signaling;

[0363] The target signaling includes one of the following:

[0364] Radio Resource Control (RRC) signaling;

[0365] Signaling during random access;

[0366] Media access control element MAC CE;

[0367] Broadcast signaling.

[0368] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0369] Optionally, the processor 1610 is further configured to read a program in the memory 1620 and execute the following process:

[0370] When receiving the first message sent by the serving base station, start sending the SRS and start a first timer;

[0371] When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

[0372] Optionally, the processor 1610 is further configured to read a program in the memory 1620 and execute the following process:

[0373] When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

[0374] Optionally, the processor 1610 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0375] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0376] See also Fig.17 An embodiment of the present application provides a service base station, comprising: a processor 1710; and a memory 1720 connected to the processor 1710 via a bus interface, wherein the memory 1720 is used to store programs and data used by the processor 1710 when performing operations, and the processor 1710 calls and executes the programs and data stored in the memory 1720.

[0377] The transceiver 1700 is connected to the bus interface and is used to receive and send data under the control of the processor 1710; the processor 1710 is used to read the program in the memory 1720 and execute the following process:

[0378] The target information is sent to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

[0379] Among them, Fig.17 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1710 and various circuits of memory represented by memory 1720 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1700 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 1710 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1710 when performing operations.

[0380] Optionally, the processor 1710 is further configured to read a program in the memory 1720 and execute the following process:

[0381] receiving the target information sent by the LMF entity; or,

[0382] The target information is determined according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

[0383] Optionally, the processor 1710 is further configured to read a program in the memory 1720 and execute the following process:

[0384] The target information is sent to the target candidate base station.

[0385] Optionally, the processor 1710 is further configured to read a program in the memory 1720 and execute the following process:

[0386] The target information is sent to the location management function LMF entity.

[0387] Optionally, the processor 1710 is further configured to read a program in the memory 1720 and execute the following process:

[0388] Sending the target information to the terminal through target signaling;

[0389] The target signaling includes one of the following:

[0390] Radio Resource Control (RRC) signaling;

[0391] Signaling during random access;

[0392] Media access control element MAC CE;

[0393] Broadcast signaling.

[0394] Optionally, the RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

[0395] Optionally, the processor 1710 is further configured to read a program in the memory 1720 and execute the following process:

[0396] After sending the first message to the terminal, starting a second timer; and,

[0397] When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

[0398] The processor 1710 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0399] See also Fig.18An embodiment of the present application provides an LMF entity, including: a processor 1810; and a memory 1820 connected to the processor 1810 through a bus interface, the memory 1820 is used to store programs and data used by the processor 1810 when performing operations, and the processor 1810 calls and executes the programs and data stored in the memory 1820.

[0400] The transceiver 1800 is connected to the bus interface and is used to receive and send data under the control of the processor 1810; the processor 1810 is used to read the program in the memory 1820 and execute the following process:

[0401] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0402] The target information is sent to a target device, where the target device includes: a serving base station and / or a target candidate base station.

[0403] Among them, Fig.18 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1810 and various circuits of memory represented by memory 1820 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1800 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 1810 is responsible for managing the bus architecture and general processing, and the memory 1820 may store data used by the processor 1810 when performing operations.

[0404] Optionally, the processor 1810 is further configured to read a program in the memory 1820 and execute the following process:

[0405] determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements, and terminal capabilities; or,

[0406] The target information sent by the serving base station is received.

[0407] Optionally, the processor 1810 is further configured to read a program in the memory 1820 and execute the following process:

[0408] When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station;

[0409] The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

[0410] The processor 1810 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0411] See also Fig.19 An embodiment of the present application provides a candidate base station, including: a processor 1910; and a memory 1920 connected to the processor 1910 through a bus interface, the memory 1920 is used to store programs and data used by the processor 1910 when performing operations, and the processor 1910 calls and executes the programs and data stored in the memory 1920.

[0412] The transceiver 1900 is connected to the bus interface and is used to receive and send data under the control of the processor 1910; the processor 1910 is used to read the program in the memory 1920 and execute the following process:

[0413] Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS;

[0414] According to the target information, stop receiving the SRS.

[0415] Among them, Fig.19 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1910 and various circuits of memory represented by memory 1920 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1900 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 1910 is responsible for managing the bus architecture and general processing, and the memory 1920 may store data used by the processor 1910 when performing operations.

[0416] Optionally, the processor 1910 is further configured to read a program in the memory 1920 and execute the following process:

[0417] receiving the target information sent by the serving base station; or,

[0418] Receive the target information sent by the LMF entity.

[0419] Optionally, the processor 1910 is further configured to read a program in the memory 1920 and execute the following process:

[0420] Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer;

[0421] When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

[0422] The processor 1910 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0423] The present application also provides a processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned method for controlling the transmission of the sounding reference signal on the terminal side, the serving base station side, the LMF entity side, or the target candidate base station side.

[0424] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0425] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0426] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0427] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0428] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0429] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0430] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for controlling transmission of a sounding reference signal SRS, characterized in that: Applied to terminals, including: receiving target information sent by a serving base station, where the target information is used to indicate a duration of sending an SRS and / or a time to stop sending the SRS; According to the target information, stop sending the SRS.

2. The method for controlling transmission of a sounding reference signal according to claim 1, characterized in that: The receiving target information sent by the serving base station includes: receiving the target information sent by the serving base station through target signaling; The target signaling includes one of the following: Radio Resource Control RRC signaling; Signaling during random access; Media access control element MAC CE; Broadcast signaling.

3. The method for controlling transmission of a sounding reference signal according to claim 2, characterized in that: The RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

4. The method for controlling transmission of a sounding reference signal according to claim 1, characterized in that: The step of stopping sending the SRS according to the target information includes: When receiving the first message sent by the serving base station, start sending the SRS and start a first timer; When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

5. The method for controlling transmission of a sounding reference signal according to claim 4, characterized in that: After starting to send the SRS and starting the first timer, the method further includes: When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

6. A method for controlling transmission of a sounding reference signal SRS, characterized in that: Applied to service base stations, including: The target information is sent to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

7. The method for controlling transmission of a sounding reference signal according to claim 6, characterized in that: Before sending the target information to the terminal, the method further includes: receiving the target information sent by the LMF entity; or, The target information is determined according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

8. The method for controlling transmission of a sounding reference signal according to claim 7, characterized in that: After receiving the target information sent by the LMF entity, or after determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements and the terminal capabilities, the method further includes: The target information is sent to the target candidate base station.

9. The method for controlling transmission of a sounding reference signal according to claim 7, characterized in that: After determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, the positioning service requirements, and the terminal capabilities, the method further includes: The target information is sent to the location management function LMF entity.

10. The method for controlling transmission of a sounding reference signal according to claim 6, characterized in that: The sending target information to the terminal includes: Sending the target information to the terminal through target signaling; The target signaling includes one of the following: Radio Resource Control RRC signaling; Signaling during random access; Media access control element MAC CE; Broadcast signaling.

11. The method for controlling transmission of a sounding reference signal according to claim 10, characterized in that: The RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

12. The method for controlling transmission of a sounding reference signal according to claim 6, characterized in that: The method further comprises: After sending the first message to the terminal, starting a second timer; and, When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

13. A method for controlling transmission of a sounding reference signal SRS, characterized in that: Applies to LMF entities, including: Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS; The target information is sent to a target device, where the target device includes: a serving base station and / or a target candidate base station.

14. The method for controlling transmission of a sounding reference signal according to claim 13, characterized in that: The obtaining of the first information includes: determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements, and terminal capabilities; or, The target information sent by the serving base station is received.

15. The method for controlling transmission of a sounding reference signal according to claim 13, characterized in that: The method further comprises: When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station; The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

16. A method for controlling transmission of a sounding reference signal SRS, characterized in that: Applied to target candidate base stations, including: Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS; According to the target information, stop receiving the SRS.

17. The method for controlling transmission of a sounding reference signal according to claim 16, characterized in that: The obtaining of target information includes: receiving the target information sent by the serving base station; or, Receive the target information sent by the LMF entity.

18. The method for controlling transmission of a sounding reference signal according to claim 16, characterized in that: The stopping receiving the SRS according to the target information includes: Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer; When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

19. A terminal, comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory and execute the following process: receiving target information sent by a serving base station, where the target information is used to indicate a duration of sending an SRS and / or a time to stop sending the SRS; According to the target information, stop sending the SRS.

20. The terminal according to claim 19, characterized in that The processor is also used to read the program in the memory and execute the following process: receiving the target information sent by the serving base station through target signaling; The target signaling includes one of the following: Radio Resource Control RRC signaling; Signaling during random access; Media access control element MAC CE; Broadcast signaling.

21. The terminal according to claim 20, characterized in that: The RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

22. The terminal according to claim 19, characterized in that The processor is also used to read the program in the memory and execute the following process: When receiving the first message sent by the serving base station, start sending the SRS and start a first timer; When the first timer reaches the duration of sending the SRS and / or the moment of stopping sending the SRS indicated by the target information, stop sending the SRS.

23. The terminal according to claim 22, characterized in that: The processor is also used to read the program in the memory and execute the following process: When it is determined that the SRS is invalid, the SRS is stopped from being sent, and the first timer is set to 0 and stops timing.

24. A serving base station, a transceiver, a memory, a processor and a computer program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory and execute the following process: The target information is sent to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

25. The serving base station according to claim 24, characterized in that: The processor is also used to read the program in the memory and execute the following process: receiving the target information sent by the LMF entity; or, The target information is determined according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements and terminal capabilities.

26. The serving base station according to claim 25, characterized in that: The processor is also used to read the program in the memory and execute the following process: The target information is sent to the target candidate base station.

27. The serving base station according to claim 25, characterized in that: The processor is also used to read the program in the memory and execute the following process: The target information is sent to the location management function LMF entity.

28. The serving base station according to claim 24, characterized in that: The processor is also used to read the program in the memory and execute the following process: Sending the target information to the terminal through target signaling; The target signaling includes one of the following: Radio Resource Control RRC signaling; Signaling during random access; Media access control element MAC CE; Broadcast signaling.

29. The serving base station according to claim 28, characterized in that: The RRC signaling includes: RRC reconfiguration signaling or RRC release signaling.

30. The serving base station according to claim 24, characterized in that: The processor is also used to read the program in the memory and execute the following process: After sending the first message to the terminal, starting a second timer; and, When the second timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the reception of the SRS is stopped.

31. A LMF entity, comprising: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory and execute the following process: Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS; The target information is sent to a target device, where the target device includes: a serving base station and / or a target candidate base station.

32. The LMF entity according to claim 31, characterized in that The processor is also used to read the program in the memory and execute the following process: determining the target information according to at least one of the resource configuration of the SRS, the characteristics of the SRS, positioning service requirements, and terminal capabilities; or, The target information sent by the serving base station is received.

33. The LMF entity according to claim 31, characterized in that The processor is also used to read the program in the memory and execute the following process: When it is determined that the serving base station has received the second message sent by the terminal, sending a third message to the target candidate base station; The second message is used to request to send an SRS; the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer.

34. A candidate base station, a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory and execute the following process: Acquire target information, where the target information is used to indicate a duration of sending the SRS and / or a time to stop sending the SRS; According to the target information, stop receiving the SRS.

35. The candidate base station according to claim 34, characterized in that: The processor is also used to read the program in the memory and execute the following process: receiving the target information sent by the serving base station; or, Receive the target information sent by the LMF entity.

36. The candidate base station according to claim 34, characterized in that: The processor is also used to read the program in the memory and execute the following process: Receive a third message sent by the LMF entity, where the third message is used to instruct the target candidate base station to start a workflow for receiving the SRS sent by the terminal and start a third timer; When the third timer reaches the duration of sending the SRS and / or the time of stopping sending the SRS indicated by the target information, the receiving of the SRS sent by the terminal is stopped.

37. A transmission control device for a sounding reference signal, characterized in that: Applied to terminals, including: A first receiving module is used to receive target information sent by a serving base station, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS; The first processing module is configured to stop sending the SRS according to the target information.

38. A transmission control device for a sounding reference signal, characterized in that: Applied to service base stations, including: The first sending module is used to send target information to the terminal, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS.

39. A transmission control device for a sounding reference signal, characterized in that: Applies to LMF entities, including: A first acquisition module is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time to stop sending the SRS; The fourth sending module is used to send the target information to a target device, where the target device includes: a serving base station and / or a target candidate base station.

40. A transmission control device for a sounding reference signal, characterized in that: Applied to target candidate base stations, including: A second acquisition module is used to acquire target information, where the target information is used to indicate the duration of sending the SRS and / or the time when the SRS is stopped; The fifth processing module is configured to stop receiving the SRS according to the target information.

41. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the transmission control method of the sounding reference signal according to any one of claims 1 to 5, or the transmission control method of the sounding reference signal according to any one of claims 6 to 12, or the transmission control method of the sounding reference signal according to any one of claims 13 to 15, or the transmission control method of the sounding reference signal according to any one of claims 16 to 18.

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