On-demand positioning reference signal request method and apparatus, storage medium

Abstract

The present disclosure provides an on-demand positioning reference signal request method and device, and a storage medium, wherein the on-demand positioning reference signal request method comprises: receiving an on-demand positioning reference signal PRS request message sent by a terminal, the on-demand PRS request message being used to request to obtain first PRS configuration information; and in response to determining that the terminal cannot be provided with the first PRS configuration information, sending a response message to the terminal. The present disclosure provides a corresponding solution in the case that an LMF device cannot provide a terminal with requested first PRS configuration information, and has high availability.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communications, and in particular, to a method and apparatus for requesting a positioning reference signal on demand, and a storage medium. BACKGROUND

[0002] 5G (5th Generation Mobile Communication Technology) NR (New Radio) introduces multiple positioning technologies, which can achieve positioning of a terminal. For some of the positioning technologies, a network-side device needs to provide positioning assistance information to the terminal. In a possible implementation, an LMF (Location Management Function) device can actively provide positioning assistance information to the terminal, wherein a base station is configured to transparently transmit the positioning assistance information sent by the LMF device to the terminal. In another possible implementation, the LMF device can send positioning assistance information to the terminal according to a request of the terminal.

[0003] The positioning assistance information contains configuration information of downlink PRS (Positioning Reference Signal).

[0004] In the discussion of on-demand PRS, it is determined that a network-side device can send predefined PRS configuration information to a terminal, which is used for the terminal to send an on-demand PRS request message, the terminal can select a PRS configuration information from the on-demand PRS request message and send a request to the network, and the network can provide the terminal with the required PRS configuration information according to the request of the terminal.

[0005] However, after the LMF device receives the on-demand PRS request message sent by the terminal, in the case that the LMF device cannot provide the terminal with the PRS configuration information requested by the terminal, there is currently no corresponding solution. SUMMARY

[0006] To overcome the problems in the related art, embodiments of the present disclosure provide a method and apparatus for requesting a positioning reference signal on demand, and a storage medium.

[0007] According to a first aspect of embodiments of the present disclosure, a method for requesting a positioning reference signal on demand is provided, the method is performed by an LMF (Location Management Function) device, and includes:

[0008] receiving an on-demand PRS (Positioning Reference Signal) request message sent by a terminal, the on-demand PRS request message being used to request acquisition of first PRS configuration information;

[0009] in response to determining that the first PRS configuration information cannot be provided to the terminal, sending a response message to the terminal.

[0010] In some optional embodiments, the on-demand PRS request message and the response message are LTE Positioning Protocol (LPP) messages.

[0011] In some optional embodiments, the on-demand PRS request message is an LPP Request Assistance Data message, and the response message is an LPP Provide Assistance Data message.

[0012] Optionally, the response message comprises second PRS configuration information and first indication information.

[0013] The first indication information is used to instruct the terminal to perform PRS measurement using the second PRS configuration information, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal.

[0014] Optionally, the response message comprises second indication information.

[0015] The second indication information is used to instruct the terminal to perform PRS measurement using third PRS configuration information, and the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message.

[0016] Optionally, the response message comprises at least one of third indication information and / or fourth indication information.

[0017] The third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate a reason for rejection of the on-demand PRS request sent by the terminal.

[0018] Optionally, in the case where the response message only comprises the third indication information and / or the fourth indication information, the third indication information and / or the fourth indication information are also used to instruct the terminal to perform PRS measurement using third PRS configuration information, and the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message.

[0019] Optionally, the response message comprises at least one of a target time length and / or a target cell identifier.

[0020] The target time length is used to indicate a minimum interval time length for the terminal to resend the on-demand PRS request, and the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.

[0021] Optionally, the second PRS configuration information is carried in a target information element of the response message when the second PRS configuration information is included in the response message.

[0022] The target information element is an information element used for indicating a set of on-demand PRS configuration information.

[0023] According to a second aspect of the embodiments of the present disclosure, a method for requesting on-demand positioning reference signal (PRS) is provided, which is performed by a terminal and includes the following steps.

[0024] sending, to a location management function (LMF) device, an on-demand PRS request message, the on-demand PRS request message being used for requesting to obtain first PRS configuration information;

[0025] in response to receiving a response message sent by the LMF device, determining, based on the response message, that the LMF device is unable to provide the terminal with the first PRS configuration information.

[0026] Optionally, the on-demand PRS request message and the response message are LTE positioning protocol (LPP) messages.

[0027] The on-demand PRS request message is an LPP request assistance data message, and the response message is an LPP provide assistance data message.

[0028] Optionally, the response message includes second PRS configuration information and first indication information.

[0029] The first indication information is used for instructing the terminal to perform PRS measurement by using the second PRS configuration information, and the second PRS configuration information is different from the first PRS configuration information requested to be obtained by the terminal.

[0030] Optionally, the method further includes the following steps.

[0031] performing PRS measurement by using the second PRS configuration information based on the first indication information.

[0032] Optionally, the response message includes second indication information.

[0033] The second indication information is used for instructing the terminal to use third PRS configuration information, and the third PRS configuration information is PRS configuration information that has been obtained by the terminal before the terminal sends the on-demand PRS request message.

[0034] Optionally, the method further includes the following steps.

[0035] performing PRS measurement by using the third PRS configuration information based on the second indication information.

[0036] Optionally, the response message comprises at least one of: third indication information, and / or fourth indication information.

[0037] The third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate a reason for rejection of the on-demand PRS request sent by the terminal.

[0038] Optionally, in the case where only the third indication information and / or the fourth indication information is included in the response message, the third indication information and / or the fourth indication information is further used to instruct the terminal to perform PRS measurement using third PRS configuration information, the third PRS configuration information being PRS configuration information acquired by the terminal before sending the on-demand PRS request message.

[0039] Optionally, the method further comprises:

[0040] Performing PRS measurement using the third PRS configuration information based on at least one of the third indication information and the fourth indication message.

[0041] Optionally, the response message further comprises at least one of: a target time length, and / or a target cell identifier.

[0042] The target time length is used to indicate a minimum interval time length for the terminal to again send the on-demand PRS request, and the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.

[0043] Optionally, the method further comprises at least one of:

[0044] Re-sending an on-demand PRS request message to the LMF device at least an interval of the target time length after receiving the response message; and / or,

[0045] In response to determining that the terminal is located in the target cell, no longer sending an on-demand PRS request message.

[0046] According to a third aspect of embodiments of the present disclosure, a device for an on-demand positioning reference signal (PRS) request is provided, the device being used in a location management function (LMF) device, and comprising:

[0047] A receiving module configured to receive an on-demand PRS request message sent by a terminal, the on-demand PRS request message being used to request acquisition of first PRS configuration information;

[0048] A first sending module configured to, in response to determining that the first PRS configuration information cannot be provided for the terminal, send a response message to the terminal.

[0049] According to a fourth aspect of embodiments of the present disclosure, a device for requesting a positioning reference signal on demand is provided, the device being configured for a terminal, comprising:

[0050] a second sending module configured to send a positioning reference signal (PRS) request message to a location management function (LMF) device, the PRS request message being used to request to obtain first PRS configuration information;

[0051] a determining module configured to, in response to receiving a response message sent by the LMF device, determine, based on the response message, that the LMF device is unable to provide the terminal with the first PRS configuration information.

[0052] According to a fifth aspect of embodiments of the present disclosure, a computer readable storage medium is provided, the storage medium storing a computer program, the computer program being used to execute the method for requesting a positioning reference signal on demand according to any one of the above LMF device side.

[0053] According to a sixth aspect of embodiments of the present disclosure, a computer readable storage medium is provided, the storage medium storing a computer program, the computer program being used to execute the method for requesting a positioning reference signal on demand according to any one of the above terminal side.

[0054] According to a seventh aspect of embodiments of the present disclosure, a device for requesting a positioning reference signal on demand is provided, comprising:

[0055] a processor;

[0056] a memory for storing processor executable instructions;

[0057] wherein the processor is configured to execute the method for requesting a positioning reference signal on demand according to any one of the above LMF device side.

[0058] According to an eighth aspect of embodiments of the present disclosure, a device for requesting a positioning reference signal on demand is provided, comprising:

[0059] a processor;

[0060] a memory for storing processor executable instructions;

[0061] wherein the processor is configured to execute the method for requesting a positioning reference signal on demand according to any one of the above terminal side.

[0062] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0063] In the embodiments of the present disclosure, the LMF device can send a response message to the terminal in a case that the LMF device determines that the first PRS configuration information requested by the terminal cannot be provided after receiving the on-demand PRS request message sent by the terminal. The terminal determines that the LMF device cannot provide the first PRS configuration information requested by the terminal based on the response message. The present disclosure provides a corresponding solution in a case that the LMF device cannot provide the first PRS configuration information requested by the terminal, and the availability is high.

[0064] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0065] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the description.

[0066] Figures 1A-1B FIG. 1 is a flow diagram of a method for an LMF device to provide positioning assistance information for a terminal according to an example embodiment.

[0067] Figure 2 FIG. 2 is a flow diagram of an on-demand positioning reference signal request method according to an example embodiment.

[0068] Figure 3 FIG. 3 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0069] Figure 4 FIG. 4 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0070] Figure 5 FIG. 5 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0071] Figure 6 FIG. 6 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0072] Figure 7 FIG. 7 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0073] Figure 8 FIG. 8 is a flow diagram of another on-demand positioning reference signal request method according to an example embodiment.

[0074] Figure 9 FIG. 9 is a block diagram of an on-demand positioning reference signal request apparatus according to an example embodiment.

[0075] Figure 10 is another on-demand positioning reference signal request device block diagram according to an example embodiment.

[0076] Figure 11 is a structure diagram of an on-demand positioning reference signal request device according to an example embodiment of the present disclosure.

[0077] Figure 12 is another structure diagram of an on-demand positioning reference signal request device according to an example embodiment of the present disclosure. DETAILED DESCRIPTION

[0078] The example embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following description of example embodiments is not representative of all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0079] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the present disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0080] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, these terms are not intended to denote a temporal or chronological order. Rather, these terms are used solely to distinguish one from another only. For example, a first information can be termed a second information, and similarly, a second information can also be termed a first information, without departing from the scope of the present disclosure. The word "if' as used herein means "when" or "upon" or "in response to the determination" depending on the context.

[0081] Currently, the network side device provides the terminal with the positioning assistance information in the following ways:

[0082] The first way is that the LMF device actively provides the terminal with the positioning assistance information.

[0083] Reference Figure 1AAs shown, the LMF device can provide the terminal with the positioning assistance information through an LPP (LTE Positioning Protocol) message. The LPP message for providing the positioning assistance information can be an LPP Provide Assistance Data message.

[0084] The second way is that the LMF device provides the positioning assistance information based on a terminal request.

[0085] Referring to Figure 1B As shown, the terminal can initiate a request to the LMF device through an LPP message. The LPP message for requesting the positioning assistance information can be an LPP Request Assistance Data message. Further, the LMF device provides the terminal with the positioning assistance information through an LPP message based on the request message. The LPP message for providing the positioning assistance information can be an LPP Provide Assistance Data message.

[0086] Figure 1A And Figure 1B The base station is not shown in any of the above processes, and the role of the base station is only to transparently transmit the LPP messages exchanged between the LMF device and the terminal.

[0087] In the embodiments of the present disclosure, the above positioning assistance information includes downlink PRS configuration information, wherein the PRS configuration information includes but is not limited to time-frequency resource location information of the PRS, and periodicity information of the PRS.

[0088] In order to further improve network efficiency and positioning accuracy, on-demand PRS is proposed. The network can send the supported on-demand PRS configuration to the terminal. The terminal can select a PRS configuration information based on the on-demand PRS configuration information provided by the network side, and send an on-demand PRS request message to the LMF device, so that the LMF device provides the terminal with the required PRS configuration information based on the on-demand PRS request message. In the embodiments of the present disclosure, the LMF device can send the predefined PRS configuration information to the terminal through an LPP message (LPP Provide Assistance Data) or a positioning system message. The positioning system message is sent by the LMF to the base station, and the base station broadcasts it to the terminal.

[0089] However, when the LMF device receives the on-demand PRS request message sent by the terminal, in addition to the case where the LMF device can provide the terminal with the requested PRS configuration information, the following cases can also exist:

[0090] The LMF device cannot provide the requested PRS configuration to the terminal. For example, the LMF device receives multiple on-demand PRS request messages from terminals, and the PRS configuration information requested by different terminals is different. How should the LMF device handle this situation?

[0091] Furthermore, how an LMF device rejects an on-demand PRS request message sent by a terminal may require limiting the terminal's behavior of resending an on-demand PRS request message, or instructing the terminal to continue using the already acquired PRS configuration information.

[0092] To address the aforementioned technical problems, this disclosure provides an on-demand positioning reference signal request scheme. The method provided in this disclosure will first be introduced from the perspective of the LMF (Light Filter Function) device.

[0093] This disclosure provides an on-demand positioning reference signal request method, referring to... Figure 2 As shown, Figure 2 This is a flowchart illustrating an on-demand positioning reference signal request method according to an embodiment, which can be used in an LMF device. The method may include the following steps:

[0094] In step 201, an on-demand positioning reference signal (PRS) request message sent by the terminal is received. The on-demand PRS request message is used to request the acquisition of first PRS configuration information.

[0095] In this embodiment of the disclosure, the on-demand PRS request message can be an LPP message. In one possible implementation, the on-demand PRS request message can be an LPP request auxiliary data message.

[0096] In step 202, in response to determining that the first PRS configuration information cannot be provided to the terminal, a response message is sent to the terminal.

[0097] In this embodiment of the disclosure, the response message can be used to indicate that the LMF device is unable to provide the terminal with the requested first PRS configuration information. The response message can also be an LPP message. In one possible implementation, the response message can provide auxiliary data messages for the LPP.

[0098] In the above embodiments, a corresponding solution is provided when the LMF device is unable to provide the requested first PRS configuration information to the terminal, and the availability is high.

[0099] In some alternative embodiments, the response message may include the following information:

[0100] In step 201, in response to determining that the first PRS configuration information cannot be provided to the terminal, a response message is sent to the terminal, the response message including: second PRS configuration information and first indication information.

[0101] In the embodiments of the present disclosure, the first indication information is used to instruct the terminal to perform PRS measurement using the second PRS configuration information, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal.

[0102] That is, in the case that the LMF device cannot provide the terminal with the first PRS configuration information requested by the terminal, the LMF device can provide the terminal with second PRS configuration information different from the first PRS configuration information, and instruct the terminal to perform PRS measurement using the second PRS configuration information different from the first PRS configuration information through the first indication information.

[0103] For example, the terminal sends an on-demand PRS request message to the LMF device, the on-demand PRS request message is used to request the first PRS configuration information, the identity of the first PRS configuration information is 1, and the LMF device receives the on-demand PRS request message. Since the LMF device receives on-demand PRS request messages sent by multiple terminals, and the PRS configuration information requested by the multiple terminals is different, the LMF device can only satisfy the requests of part of the terminals. In the case that the LMF device cannot provide the terminal with the first PRS configuration information with the identity of 1, the LMF device provides the terminal with second PRS configuration information with the identity of 2. The LMF device provides the terminal with the second PRS configuration information through a response message, and the response message also contains the first indication information, which explicitly instructs the terminal to perform PRS measurement using the second PRS configuration information, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal, thereby avoiding the case that the terminal considers that the LMF device sends incorrect PRS configuration information.

[0104] In the above embodiments, the LMF device can send the terminal with the second PRS configuration information and the first indication information through the response message, instruct the terminal to perform PRS measurement using the second PRS configuration information, and avoid the case that the terminal considers that the LMF device sends incorrect information, thereby improving the availability.

[0105] In step 201, in response to determining that the terminal cannot be provided with the first PRS configuration information, a response message is sent to the terminal, and the response message includes second indication information.

[0106] In the embodiments of the present disclosure, the second indication information is used to instruct the terminal to perform PRS measurement using third PRS configuration information, and the third PRS configuration information is PRS configuration information acquired by the terminal before sending the on-demand PRS request message. Accordingly, in order to save signaling resources, the third PRS configuration information does not need to be included in the response message.

[0107] For example, the terminal sends an on-demand PRS request message to the LMF device, the on-demand PRS request message is used to request first PRS configuration information, the identity of the first PRS configuration information is 1, after the LMF device receives the on-demand PRS request message, if it is determined that the first PRS configuration information with the identity of 1 cannot be provided to the terminal, the terminal is instructed to continue to use third PRS configuration information through second indication information, wherein the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message, for example, the third PRS configuration information is PRS configuration information acquired by the terminal from positioning assistance information provided by the network side device before sending the on-demand PRS request message.

[0108] In the embodiment of the present disclosure, since the terminal has acquired the third PRS configuration information before sending the on-demand PRS request message, the LMF device does not need to carry the third PRS configuration information in the response message, which saves the signaling overhead when the PRS configuration information does not change.

[0109] In the above embodiment, the third PRS configuration information acquired by the terminal before sending the on-demand PRS request message can be directly indicated to the terminal through the second indication information for PRS measurement, and the third PRS configuration information does not need to be carried in the response message, which is simple to implement, has high availability, and saves signaling overhead.

[0110] In step 201, in response to determining that the first PRS configuration information cannot be provided to the terminal, a response message is sent to the terminal, and the response message only includes at least one of third indication information and / or fourth indication information.

[0111] In the embodiment of the present disclosure, the third indication information is used to indicate that the on-demand PRS request sent by the terminal is rejected, and the fourth indication information is used to indicate the reason for rejecting the on-demand PRS request sent by the terminal.

[0112] In this case, the third indication information and / or the fourth indication information are also used to instruct the terminal to use third PRS configuration information for PRS measurement, and the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message.

[0113] In the above embodiment, the third PRS configuration information acquired by the terminal before sending the on-demand PRS request message can be implicitly indicated to the terminal through the third indication information and / or the fourth indication information for PRS measurement. This is simple to implement and has high availability.

[0114] In step 201, in response to determining that the first PRS configuration information cannot be provided for the terminal, a response message is sent to the terminal, the response message including: second PRS configuration information, first indication information, and third indication information. Or, the response message including: second PRS configuration information, first indication information, and fourth indication information. Or, the response message including: second PRS configuration information, first indication information, third indication information, and fourth indication information.

[0115] In the embodiments of the present disclosure, the first indication information is used to instruct the terminal to use the second PRS configuration information for PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal to obtain. The third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate the reason for rejection of the on-demand PRS request sent by the terminal.

[0116] After receiving the response message, the terminal can determine, based on the third indication information, that the LMF device rejects the on-demand PRS request sent by the terminal, and determine, based on the fourth indication information, the reason for rejection of the on-demand PRS request sent by the terminal.

[0117] In this case, the terminal can use the second PRS configuration information for PRS measurement based on the first indication information.

[0118] In step 201, in response to determining that the first PRS configuration information cannot be provided for the terminal, a response message is sent to the terminal, the response message including: second indication information, and third indication information. Or, the response message including: second indication information, and fourth indication information. Or, the response message including: second indication information, third indication information, and fourth indication information.

[0119] The second indication information is used to instruct the terminal to use third PRS configuration information for PRS measurement, the third PRS configuration information being PRS configuration information that the terminal has obtained before sending the on-demand PRS request message. The third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate the reason for rejection of the on-demand PRS request sent by the terminal.

[0120] After receiving the response message, the terminal can determine, based on the third indication information, that the LMF device rejects the on-demand PRS request sent by the terminal, and determine, based on the fourth indication information, the reason for rejection of the on-demand PRS request sent by the terminal.

[0121] In this case, the terminal can use the third PRS configuration information that has been obtained for PRS measurement based on the second indication information.

[0122] In the above embodiments, in the case that the LMF device cannot provide the terminal with the requested first PRS configuration information, the terminal is instructed by the LMF device through different contents of the response message to perform PRS measurement based on different PRS configuration information, and the availability is high.

[0123] In some optional embodiments, in addition to the information of the different cases described above, the response message can further include at least one of the following: a target time length, and / or a target cell identifier.

[0124] The target time length is used to indicate the minimum interval time length for the terminal to resend the on-demand PRS request, and the target cell identifier is the identifier of the target cell that always rejects the on-demand PRS request sent by the terminal.

[0125] In one possible implementation, the LMF sends a target time length in the response message to the terminal, and the terminal can resend the on-demand PRS request message to the LMF device at least after the target time length. During the time period corresponding to the target time length, the LMF will reject the on-demand PRS request message sent by the terminal.

[0126] In another possible implementation, the LMF device determines that the base station or TRP (Transmission Receiving Point) does not support the change of PRS configuration information according to the capability information of the base station or TRP, and then includes a target cell identifier in the response message to indicate the identifier of the target cell that always rejects the on-demand PRS request sent by the terminal. The base station can include one or more TRPs, which are not limited in the present disclosure.

[0127] In another possible implementation, the LMF device can include both a target time length and a target cell identifier in the response message sent to the terminal.

[0128] The information content included in the response message is further illustrated as follows.

[0129] For example, after receiving the on-demand PRS request message sent by the terminal, the LMF device determines that the base station or TRP does not support the change of PRS configuration information according to the capability information of the base station or TRP, and then includes third indication information and a target cell identifier in the response message sent to the terminal. The third indication information is used to indicate that the LMF device rejects the on-demand PRS request sent by the terminal. The target cell identifier allows the terminal to not send an on-demand PRS request message to the LMF device when it is in the target cell.

[0130] For another example, after the LMF device receives the on-demand PRS request message sent by the terminal, if other terminals are using the first PRS configuration information requested by the terminal for positioning, the LMF device includes third indication information, fourth indication information and a target time length in the response message sent to the terminal. The third indication information is used to indicate that the LMF device rejects the on-demand PRS request sent by the terminal, the fourth indication information is used to indicate that the reason why the LMF device rejects the on-demand PRS request sent by the terminal is that other terminals are using the first PRS configuration information for positioning. The target time length can be determined by the LMF device according to the time when the positioning of other terminals is completed. After receiving the response message, the terminal sends an on-demand PRS request message to the LMF device again after at least the target time length.

[0131] The above is only an example description, and various information contents included in the response message should belong to the protection scope of the present disclosure.

[0132] In the above embodiments, the LMF device can include the target time length and / or the target cell identifier in the response message, so as to avoid the waste of terminal resources caused by the frequent sending of the on-demand PRS request message by the terminal to the LMF device, and improve the availability.

[0133] In some optional embodiments, in the case where the LMF device includes the second PRS configuration information in the response message, the second PRS configuration information can be carried in a target IE (Information Element) of the response message. The target IE is an IE used to indicate a set of on-demand PRS configuration information.

[0134] In one possible implementation, the response message is an LPP Provide Assistance Data message, and the target IE is an IE used to indicate a set of on-demand PRS configuration information in the LPP Provide Assistance Data message. The IE is an IE already included in the LPP Provide Assistance Data message according to the protocol agreement, so it is not necessary to add a new IE in the LPP Provide Assistance Data message to carry the second PRS configuration information. The signaling resources are saved.

[0135] In the above embodiments, when the second PRS configuration information is included in the response message, the second PRS configuration information is carried in a target information element of the response message, and the target information element is an information element used to indicate a set of on-demand PRS configuration information. The problem of resource waste caused by carrying the second PRS configuration information through an added information element is avoided.

[0136] Next, the on-demand positioning reference signal request method provided by the present disclosure is introduced from the terminal side.

[0137] The embodiment of the present disclosure provides an on-demand positioning reference signal request method, which refers toFigure 3 As shown, Figure 3 is a flow chart of a method for requesting a positioning reference signal on demand according to an embodiment, which can be used by a terminal. The method can include the following steps:

[0138] In step 301, a positioning reference signal on demand request message is sent to a location management function (LMF) device, and the positioning reference signal on demand request message is used to request to obtain first positioning reference signal (PRS) configuration information.

[0139] In the embodiments of the present disclosure, the terminal can determine one PRS configuration information from the PRS configuration information provided by the network side device, and send a positioning reference signal on demand request message to the LMF device to request to obtain the first PRS configuration information.

[0140] In step 302, in response to receiving a response message sent by the LMF device, it is determined based on the response message that the LMF device cannot provide the first PRS configuration information for the terminal.

[0141] In the above embodiments, in the case that the LMF device cannot provide the first PRS configuration information requested by the terminal, a corresponding solution is provided, and the usability is high.

[0142] In some optional embodiments, the positioning reference signal on demand request message and the response message are LTE positioning protocol (LPP) messages. Optionally, the positioning reference signal on demand request message is an LPP request assistance data message, and the response message is an LPP provide assistance data message.

[0143] In some optional embodiments, the response message can include the following information:

[0144] In step 402, in response to receiving a response message sent by the LMF device, it is determined based on the response message that the LMF device cannot provide the first PRS configuration information for the terminal. The response message includes second PRS configuration information and first indication information.

[0145] In the embodiments of the present disclosure, the first indication information is used to instruct the terminal to use the second PRS configuration information for PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal to obtain.

[0146] That is, in the case that the LMF device cannot provide the first PRS configuration information requested by the terminal, the LMF device can provide second PRS configuration information different from the first PRS configuration information for the terminal, and through the first indication information, instruct the terminal to use the second PRS configuration information different from the first PRS configuration information for PRS measurement.

[0147] Correspondingly, with reference to Figure 4 Figure 4 is a flow chart of a method for requesting a positioning reference signal on demand according to an embodiment, which can be used by a terminal. The method can include the following steps:

[0148] In step 401, a positioning reference signal (PRS) request message on demand is sent to a location management function (LMF) device, and the PRS request message on demand is used to request to obtain first PRS configuration information.

[0149] In step 402, in response to receiving a response message sent by the LMF device, it is determined, based on the response message, that the LMF device cannot provide the terminal with the first PRS configuration information.

[0150] The response message includes second PRS configuration information and first indication information. The first indication information is used to instruct the terminal to use the second PRS configuration information for PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested to be obtained by the terminal.

[0151] In step 403, based on the first indication information, PRS measurement is performed using the second PRS configuration information.

[0152] In the above embodiment, after receiving the response message, the terminal can use the second PRS configuration information included in the response message for PRS measurement based on the first indication information in the response message. In the case where the LMF device cannot provide the terminal with the first PRS configuration information requested by the terminal, the terminal is allowed to use the second PRS configuration information different from the first PRS configuration information in the response message for PRS measurement based on the first indication information in the response message, which has high availability.

[0153] In one possible implementation, the second PRS configuration information is carried in a target information element of the response message. The target information element is an information element used to indicate a set of PRS configuration information on demand.

[0154] In step 502, in response to receiving a response message sent by the LMF device, it is determined, based on the response message, that the LMF device cannot provide the terminal with the first PRS configuration information. The response message includes second indication information.

[0155] In the embodiment of the present disclosure, the second indication information is used to instruct the terminal to use third PRS configuration information for PRS measurement. The third PRS configuration information is PRS configuration information that has been obtained by the terminal before the terminal sends the PRS request message on demand. Correspondingly, in order to save signaling resources, the third PRS configuration information does not need to be included in the response message.​

[0156] Accordingly, with reference to Figure 5 as shown in the figure, Figure 5 is a flow chart of a method for requesting a positioning reference signal on demand according to an embodiment, which can be used by a terminal. The method can include the following steps.

[0157] In step 501, a positioning reference signal (PRS) request message on demand is sent to a location management function (LMF) device, and the PRS request message on demand is used to request to obtain first PRS configuration information.

[0158] In step 502, in response to receiving a response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.

[0159] The response message includes second indication information, and the second indication information is used to instruct the terminal to perform PRS measurement using third PRS configuration information, and the third PRS configuration information is PRS configuration information that has been obtained by the terminal before the terminal sends the PRS request message on demand.

[0160] In step 503, based on the second indication information, the third PRS configuration information is used to perform PRS measurement.

[0161] In the above embodiment, after receiving the response message, the terminal can use the third PRS configuration information obtained before sending the PRS request message on demand to perform PRS measurement based on the second indication information in the response message. In the case where the LMF device cannot provide the terminal with the requested first PRS configuration information, the terminal uses the third PRS configuration information obtained before sending the PRS request message on demand to perform PRS measurement based on the second indication information in the response message, and the availability is high.

[0162] In step 602, in response to receiving a response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information; and the response message only includes at least one of the following: third indication information and / or fourth indication information.

[0163] In the embodiments of the present disclosure, the third indication information is used to indicate rejection of the PRS request on demand sent by the terminal, and the fourth indication information is used to indicate the reason for rejection of the PRS request on demand sent by the terminal.

[0164] Further, the third indication information and / or the fourth indication information are further used to instruct the terminal to use third PRS configuration information for PRS measurement, the third PRS configuration information being PRS configuration information acquired by the terminal before sending the on-demand PRS request message.

[0165] Correspondingly, referring to Figure 6 , a flowchart of an on-demand positioning reference signal request method is shown according to an embodiment, which can be used for a terminal. The method can include the following steps: Figure 6

[0166] In step 601, an on-demand positioning reference signal (PRS) request message is sent to a location management function (LMF) device, and the on-demand PRS request message is used to request acquisition of first PRS configuration information.

[0167] In step 602, in response to receiving a response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information.

[0168] The response message includes third indication information and / or fourth indication information. The third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate the reason for rejection of the on-demand PRS request sent by the terminal. Further, the third indication information and / or the fourth indication information are further used to instruct the terminal to use third PRS configuration information for PRS measurement, the third PRS configuration information being PRS configuration information acquired by the terminal before sending the on-demand PRS request message.

[0169] In step 603, based on the third indication information and / or the fourth indication information, the third PRS configuration information is used for PRS measurement.

[0170] In the above embodiment, after receiving the response message, the terminal can use the third PRS configuration information acquired before sending the on-demand PRS request message for PRS measurement based on the third indication information and / or the fourth indication information in the response message, and the availability is high.

[0171] In response to receiving the response message sent by the LMF device, based on the response message, it is determined that the LMF device cannot provide the terminal with the first PRS configuration information. The response message includes second PRS configuration information, first indication information, and third indication information. Or, the response message includes second PRS configuration information, first indication information, and fourth indication information. Or, the response message includes second PRS configuration information, first indication information, third indication information, and fourth indication information. ​

[0172] With reference to the process shown in Figure 4 Similarly, the terminal can use the second PRS configuration information to perform PRS measurement based on the first indication information.

[0173] In response to receiving the response message sent by the LMF device, the LMF device is determined to be unable to provide the terminal with the first PRS configuration information based on the response message. The response message includes: second indication information, and third indication information. Or, the response message includes: second indication information, and fourth indication information. Or, the response message includes: second indication information, third indication information and fourth indication information.

[0174] With reference to the process shown in Figure 5 Similarly, the terminal can use the acquired third PRS configuration information to perform PRS measurement based on the second indication information.

[0175] In the above embodiments, in the case that the LMF device is unable to provide the terminal with the requested first PRS configuration information, the terminal can perform corresponding actions based on different information contents in the response message, and the availability is high.

[0176] In some optional embodiments, the response message can further include at least one of: a target time length, and / or a target cell identifier;

[0177] The target time length is used to indicate the shortest interval time length for the terminal to send the on-demand PRS request again, and the target cell identifier is the identifier of the target cell that always rejects the on-demand PRS request sent by the terminal.

[0178] Correspondingly, with reference to Figure 7 , Figure 7 A flowchart of an on-demand positioning reference signal request method according to an embodiment is shown, which can be used for a terminal. The method can include the following steps:

[0179] In step 701, an on-demand positioning reference signal PRS request message is sent to a location management function LMF device, and the on-demand PRS request message is used to request to acquire first PRS configuration information.

[0180] In step 702, in response to receiving a response message sent by the LMF device, it is determined that the LMF device is unable to provide the terminal with the first PRS configuration information based on the response message.

[0181] In addition to the above indication information, the response message can further include a target time length, and / or a target cell identifier.

[0182] In step 703, after receiving the response message for at least the target duration, an on-demand PRS request message is sent to the LMF device again; and / or, in response to determining that it is located within the target cell, the on-demand PRS request message is no longer sent.

[0183] In one possible implementation, the terminal performs duration detection and, after at least the target duration, sends an on-demand PRS request message to the LMF device again.

[0184] In one possible implementation, the terminal performs cell detection. If the terminal determines that it is located within the target cell, it will no longer send on-demand PRS request messages to the LMF device.

[0185] In another possible implementation, the terminal performs duration detection and cell detection simultaneously.

[0186] For example, after at least the target time interval and after determining that it is not in the target cell, the terminal sends the on-demand PRS request message to the LMF device again.

[0187] For example, if the terminal moves into the target cell after a target time interval, it will not send on-demand PRS request messages to the LMF device during its time in the target cell.

[0188] For example, if the terminal has not reached the target duration from receiving the response message to leaving the target cell, it can wait until the target duration expires and then send an on-demand PRS request message to the LMF device again.

[0189] The above is merely an illustrative example; any scheme in which the terminal performs corresponding actions based on the response message should fall within the protection scope of this disclosure.

[0190] In the above embodiments, the LMF device can include the target duration and / or target cell identifier in the response message. Based on the indication of the response message, the terminal avoids the waste of terminal resources caused by frequently sending on-demand PRS request messages to the LMF device, thus achieving high availability.

[0191] In some alternative embodiments, refer to Figure 8 As shown, Figure 8 This is a flowchart illustrating an on-demand positioning reference signal request method according to an embodiment, which may include the following steps:

[0192] In step 801, the terminal sends an On-Demand Positioning Reference Signal (PRS) request message to the LMF device. The On-Demand PRS request message is used to request the acquisition of first PRS configuration information.

[0193] In step 802, the LMF device sends a response message to the terminal in response to determining that the first PRS configuration information cannot be provided for the terminal.

[0194] In step 803, the terminal determines that the LMF device cannot provide the first PRS configuration information for the terminal based on the response message.

[0195] Of course, in the case that the response message includes different information content, the terminal can perform different actions. The specific process is consistent with that in the above-mentioned embodiments, and will not be described here.

[0196] In the above-mentioned embodiments, the LMF device can send a response message to the terminal in the case that the LMF device determines that the first PRS configuration information requested by the terminal cannot be provided after receiving the on-demand PRS request message sent by the terminal. The terminal determines that the LMF device cannot provide the first PRS configuration information requested by the terminal based on the response message. The present disclosure provides a corresponding solution in the case that the LMF device cannot provide the first PRS configuration information requested by the terminal, and has high usability.

[0197] Corresponding to the foregoing application function implementation method embodiments, the present disclosure also provides application function implementation device embodiments.

[0198] Reference Figure 9 , Figure 9 is a block diagram of an on-demand positioning reference signal request device according to an exemplary embodiment, the device being used for a location management function (LMF) device, and comprising:

[0199] The receiving module 901 is configured to receive an on-demand positioning reference signal (PRS) request message sent by a terminal, the on-demand PRS request message being used to request to obtain first PRS configuration information.

[0200] The first sending module 902 is configured to send a response message to the terminal in response to determining that the first PRS configuration information cannot be provided for the terminal.

[0201] Reference Figure 10 , Figure 10 is a block diagram of an on-demand positioning reference signal request device according to an exemplary embodiment, the device being used for a terminal, and comprising:

[0202] The second sending module 1001 is configured to send an on-demand positioning reference signal (PRS) request message to a location management function (LMF) device, the on-demand PRS request message being used to request to obtain first PRS configuration information.

[0203] The determining module 1002 is configured to, in response to receiving the response message sent by the LMF device, determine, based on the response message, that the LMF device is unable to provide the terminal with the first PRS configuration information.

[0204] For the apparatus embodiment, since it basically corresponds to the method embodiment, the relevant part can be referred to the part of the method embodiment. The apparatus embodiment described above is merely illustrative, wherein the units described above as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Some or all of the modules can be selected to achieve the purpose of the present disclosure according to actual needs. Those skilled in the art can understand and implement it without creative labor.

[0205] Correspondingly, the present disclosure also provides a computer readable storage medium, which stores a computer program for executing any of the above-mentioned methods for the LMF device side.

[0206] Correspondingly, the present disclosure also provides a computer readable storage medium, which stores a computer program for executing any of the above-mentioned methods for the terminal side.

[0207] Correspondingly, the present disclosure also provides a computer readable storage medium, which stores a computer program for executing any of the above-mentioned methods for the LMF device side.

[0208] A processor;

[0209] A memory for storing processor-executable instructions;

[0210] The processor is configured to execute any of the above-mentioned methods for the LMF device side.

[0211] As Figure 11 shown, Figure 11 is a structural schematic diagram of a device 1100 for requesting a positioning reference signal on demand according to an exemplary embodiment. The device 1100 can be provided as an LMF device. Referring to Figure 11 , the device 1100 includes a processing component 1122, a wireless transmitting / receiving component 1124, an antenna component 1126, and a signal processing part specific to a wireless interface, and the processing component 1122 can further include at least one processor.

[0212] One of the processors in the processing component 1122 can be configured to execute any of the above-mentioned methods for requesting a positioning reference signal on demand.

[0213] Correspondingly, the disclosure also provides a device for requesting positioning reference signal on demand, comprising:

[0214] a processor;

[0215] a memory for storing processor-executable instructions;

[0216] The processor is configured to execute the method for requesting positioning reference signal on demand on the terminal side as described above.

[0217] Figure 12 is a block diagram of a device 1200 for requesting positioning reference signal on demand according to an exemplary embodiment. For example, the device 1200 can be a terminal such as a mobile phone, a tablet computer, an e-book reader, a multimedia playback device, a wearable device, a vehicle-mounted user device, an iPad, a smart TV, an unmanned device, etc.

[0218] Referring to Figure 12 , the device 1200 can include one or more of the following components: a processing component 1202, a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input / output (I / O) interface 1212, a sensor component 1216, and a communication component 1218.

[0219] The processing component 1202 generally controls the overall operation of the device 1200, such as operations associated with display, telephone call, data random access, camera operation and recording operation. The processing component 1202 can include one or more processors 1220 to execute instructions to complete all or part of the steps of the channel monitoring method described above. In addition, the processing component 1202 can include one or more modules to facilitate interaction between the processing component 1202 and other components. For example, the processing component 1202 can include a multimedia module to facilitate interaction between the multimedia component 1208 and the processing component 1202. For another example, the processing component 1202 can read executable instructions from the memory to implement the steps of a channel monitoring method provided by the embodiments described above.

[0220] The memory 1204 is configured to store various types of data to support the operation of the device 1200. Examples of these data include instructions for operating any application or method on the device 1200, contact data, phonebook data, messages, pictures, videos, etc. The memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0221] Power component 1206 provides power to the various components of the device 1200. The power component 1206 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1200.

[0222] The multimedia component 1208 includes a display for the device 1200 to provide an output interface between the device 1200 and a user. In some embodiments, the multimedia component 1208 includes a front-facing camera and / or a rear-facing camera. The front-facing camera and / or the rear-facing camera can receive external multimedia data when the device 1200 is in an operational mode, such as a photographing mode or a video mode. Each of the front-facing camera and the rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0223] The audio component 1210 is configured to output and / or input audio signals. For example, the audio component 1210 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1204 or transmitted via the communication component 1218. In some embodiments, the audio component 1210 also includes a speaker for outputting an audio signal.

[0224] The I / O interface 1212 provides an interface between the processing component 1202 and peripheral interface modules, which can be a keyboard, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0225] The sensor component 1216 includes one or more sensors for providing various state assessments for the device 1200. For example, the sensor component 1216 can detect an open / closed state of the device 1200, a relative positioning of components, such as a display and a keypad of the device 1200, a change in position of the device 1200 or a component of the device 1200, a presence or absence of user contact with the device 1200, an orientation or acceleration / deceleration of the device 1200, and a temperature change of the device 1200. The sensor component 1216 can include a proximity sensor configured to detect presence of a nearby object without any physical touch. The sensor component 1216 can further include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1216 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0226] The communication component 1218 is configured to facilitate wired or wireless communication between the device 1200 and another device. The device 1200 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1218 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1218 further includes a Near Field Communication (NFC) module to facilitate close proximity communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technology.

[0227] In an exemplary embodiment, the device 1200 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components, for executing the above-described channel monitoring method at the terminal side.

[0228] In an exemplary embodiment, a non-transitory machine-readable storage medium including instructions, such as the memory 1204 including instructions, is also provided, which can be executed by the processor 1220 of the device 1200 to complete the above-described on-demand positioning reference signal request method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0229] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such features to the extent that they are not disclosed in the prior art. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure is indicated by the following claims.

[0230] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings, and that various modifications and changes can be made to the embodiments without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A method of requesting a positioning reference signal on demand, the method comprising: The method is performed by a location management function, LMF, device, and includes: receiving an on-demand positioning reference signal, PRS, request message sent by a terminal, the on-demand PRS request message being used to request to obtain first PRS configuration information; in response to determining that the first PRS configuration information cannot be provided for the terminal, sending a response message to the terminal; wherein the response message comprises third indication information and fourth indication information, the third indication information being used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information being used to indicate a reason for rejection of the on-demand PRS request sent by the terminal.

2. The method of claim 1, wherein, The on-demand PRS request message and the response message are LTE positioning protocol, LPP, messages. The on-demand PRS request message is an LPP request assistance data message, and the response message is an LPP provide assistance data message.

3. The method of claim 1, wherein, The response message comprises second PRS configuration information and first indication information. The first indication information is used to instruct the terminal to use the second PRS configuration information for PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested to be obtained by the terminal.

4. The method of claim 1, wherein, The response message comprises second indication information. The second indication information is used to instruct the terminal to use third PRS configuration information for PRS measurement, the third PRS configuration information being PRS configuration information that has been obtained by the terminal before sending the on-demand PRS request message.

5. The method of claim 1, wherein, In a case where the response message only comprises the third indication information and the fourth indication information, the third indication information and the fourth indication information are also used to instruct the terminal to use third PRS configuration information for PRS measurement, the third PRS configuration information being PRS configuration information that has been obtained by the terminal before sending the on-demand PRS request message.

6. The method of claim 1, wherein, The response message comprises at least one of the following: a target time length, and / or a target cell identifier. The target time length is used to indicate a minimum interval time length for the terminal to send the on-demand PRS request again, and the target cell identifier is an identifier of a target cell that always rejects the on-demand PRS request sent by the terminal.

7. The method of claim 3, wherein, In a case where the response message comprises second PRS configuration information, the second PRS configuration information is carried in a target information element of the response message. The target information element is an information element, IE, used to indicate a set of on-demand PRS configuration information.

8. A method of on-demand positioning reference signal, the method comprising: The method is performed by a terminal, and includes: sending an on-demand positioning reference signal, PRS, request message to a location management function, LMF, device, the on-demand PRS request message being used to request to obtain first PRS configuration information; in response to receiving the response message sent by the LMF device, determining, based on the response message, that the LMF device is unable to provide the terminal with the first PRS configuration information; wherein the response message comprises third indication information and fourth indication information, the third indication information is used to indicate rejection of the on-demand PRS request sent by the terminal, and the fourth indication information is used to indicate the reason for rejecting the on-demand PRS request sent by the terminal.

9. The method of claim 8, wherein, The on-demand PRS request message and the response message are LTE positioning protocol (LPP) messages. The on-demand PRS request message is an LPP request assistance data message, and the response message is an LPP provide assistance data message.

10. The method of claim 8, wherein, The response message comprises second PRS configuration information and first indication information. The first indication information is used to instruct the terminal to use the second PRS configuration information for PRS measurement, and the second PRS configuration information is different from the first PRS configuration information requested by the terminal.

11. The method of claim 10, wherein, Further comprising: Based on the first indication information, using the second PRS configuration information to perform PRS measurement.

12. The method of claim 8, wherein, The response message comprises second indication information. The second indication information is used to instruct the terminal to use third PRS configuration information, and the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message.

13. The method of claim 12, wherein, Further comprising: Based on the second indication information, using the third PRS configuration information to perform PRS measurement.

14. The method of claim 8, wherein, In the case where the response message only comprises the third indication information and the fourth indication information, the third indication information and the fourth indication information are also used to instruct the terminal to use third PRS configuration information for PRS measurement, and the third PRS configuration information is PRS configuration information that the terminal has acquired before sending the on-demand PRS request message.

15. The method of claim 14, wherein, Further comprising: Based on the third indication information and the fourth indication information, using the third PRS configuration information to perform PRS measurement.

16. The method of claim 8, wherein, The response message further comprises at least one of the following: a target time length and / or a target cell identifier. The target time length is used to indicate the shortest interval time length for the terminal to resend the on-demand PRS request, and the target cell identifier is the identifier of the target cell that always rejects the on-demand PRS request sent by the terminal.

17. The method of claim 16, wherein, Further comprising at least one of the following: Resend an on-demand PRS request message to the LMF device at least after an interval of the target time length after receiving the response message; and / or In response to determining that it is located in the target cell, no longer send an on-demand PRS request message.

18. An apparatus for on-demand positioning reference signal request, the apparatus comprising: means for receiving a request for a positioning reference signal; and means for transmitting a positioning reference signal in response to the request. The apparatus is used for a location management function (LMF) device, comprising: A receiving module configured to receive an on-demand positioning reference signal (PRS) request message sent by a terminal, the on-demand PRS request message being used to request acquisition of first PRS configuration information; The first sending module is configured to send a response message to the terminal in response to determining that the first PRS configuration information cannot be provided for the terminal; wherein the response message comprises third indication information and fourth indication information, the third indication information is used to indicate that the on-demand PRS request sent by the terminal is rejected, and the fourth indication information is used to indicate the reason for rejecting the on-demand PRS request sent by the terminal.

19. An apparatus for requesting a positioning reference signal on demand, the apparatus comprising: a processor configured to: determine a request for a positioning reference signal; and transmit the request for the positioning reference signal. The device is used for a terminal, and comprises: The second sending module is configured to send an on-demand positioning reference signal (PRS) request message to a location management function (LMF) device, wherein the on-demand PRS request message is used to request to obtain first PRS configuration information. The determining module is configured to determine, in response to receiving a response message sent by the LMF device, that the LMF device cannot provide the first PRS configuration information for the terminal based on the response message; wherein the response message comprises third indication information and fourth indication information, the third indication information is used to indicate that the on-demand PRS request sent by the terminal is rejected, and the fourth indication information is used to indicate the reason for rejecting the on-demand PRS request sent by the terminal.

20. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used to execute the on-demand positioning reference signal request method in any one of claims 1-7.

21. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program is used to execute the on-demand positioning reference signal request method in any one of claims 8-17.

22. An apparatus for on-demand positioning reference signal request, the apparatus comprising: means for receiving a request for a positioning reference signal; and means for transmitting a positioning reference signal in response to the request. comprise: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the on-demand positioning reference signal request method in any one of claims 1-7.

23. An apparatus for on-demand positioning reference signal request, the apparatus comprising: a processor configured to: determine a request for a positioning reference signal; and transmit the request for the positioning reference signal. comprise: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the on-demand positioning reference signal request method in any one of claims 8-17.

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