Communication method and communication device

Abstract

An embodiment of this application provides a communication method and a communication device. The communication method includes a first location management network element receiving first positioning request information from an access management network element, where the first positioning request information includes an identifier of a gateway mobile location center network element requesting location information, and the location information is a location of a terminal device. The first location management network element determines whether to allow the positioning request from the gateway mobile location center network element requesting location information based on the identifier of the gateway mobile location center network element requesting location information. The first location management network element sends first positioning request response information to the access management network element, where the first positioning request response information is used to inform the access management network element whether the positioning request for the terminal device is allowed. Thus, the first location management network element can determine whether the gateway mobile location center network element requesting location information is a gateway mobile location center network element deployed together with the first location management network element to ensure security of device information.

Description

[Technical field]

[0001] This application claims priority to Chinese Patent Application No. 202210130065.2, entitled “COMMUNICATION METHOD AND COMMUNICATION APPARATUS,” filed with the China State Intellectual Property Office on February 11, 2022, which is incorporated by reference in its entirety herein.

[0002] TECHNICAL FIELD Embodiments of this application relate to the field of communications, and more particularly, to a communication method and a communication device. [Background technology]

[0003] Location services (LCS), currently also called positioning services, are services that determine the actual geographic location of a mobile user through cooperation between a wireless terminal and a wireless network to provide location-related information required by the user. There are two concepts involved in location services: mobile positioning technology and mobile positioning services. Based on the positioning request initiator, there are three types of standard positioning services: Mobile Originating Location Request (MO-LR), Mobile Terminating Location Request (MT-LR), and Network Induced Location Request (NI-LR).

[0004] However, in the positioning service, the access and mobility management function (AMF) queries and obtains the location management function (LMF) separately, and queries and obtains the gateway mobile location center (GMLC) device. Currently, in the 3rd Generation Partnership Project (3GPP) standard, the AMF cannot select the LMF designated by the GMLC, or the LMF and GMLC deployed in the same location area. Summary of the Invention

[0005] The embodiments of this application provide a communication method and a communication device for selecting a suitable network element for positioning, so as to improve information security. [Means for solving the problem]

[0006] According to a first aspect, a communication method is provided. The method may be performed by a first LMF, or may be performed by a component (e.g., a chip or a circuit) of the first LMF. This is not limited here. For ease of explanation, the following uses an example in which the method is performed by the first LMF for explanation.

[0007] The method may include: a first LMF receives first positioning request information from an AMF, the first positioning request information includes an identifier of a GMLC requesting location information, the location information is a location of a terminal device, the first LMF determines whether to allow a positioning request from the GMLC requesting location information based on the identifier of the GMLC requesting location information, the first LMF sends first positioning request response information to the AMF, and the first positioning request response information is used to inform the AMF whether the positioning request for the terminal device is allowed.

[0008] Based on this solution, the first LMF determines whether to allow a positioning request from a GMLC requesting location information based on an identifier of the GMLC requesting location information from the AMF, and feeds back the determination result to the AMF. In the method, the first LMF can determine whether the GMLC requesting location information is a GMLC deployed with the first LMF to determine whether to allow the positioning request. This further avoids positioning requests for other devices to ensure the security of device information.

[0009] In relation to the first aspect, in some implementations of the first aspect, determining whether the first LMF should allow a positioning request from the GMLC requesting the location information based on an identifier of the GMLC requesting the location information includes the first LMF determining an association relationship based on the identifier of the GMLC requesting the location information, and the first LMF determining whether to allow a positioning request from the GMLC requesting the location information based on the association relationship, wherein the association relationship indicates whether the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise device.

[0010] Based on the solution, the first LMF can determine whether the GMLC requesting location information is a GMLC deployed together with the first LMF by using a method for determining an association aspect to increase the flexibility of the solution.

[0011] In relation to the first aspect, in some implementations of the first aspect, the first LMF determining an association relationship based on an identifier of a GMLC requesting location information includes the first LMF determining an association relationship based on an identifier of a first GMLC corresponding to the first LMF and an identifier of the GMLC requesting location information, wherein the first GMLC and the first LMF belong to the same device or the same enterprise user.

[0012] Based on the solution, the first LMF may determine an association relationship based on an identifier of the first GMLC (e.g., a network instance identifier of the first GMLC, an FQDN of the first GMLC, or a GMLC relationship list associated with the first LMF) and an identifier of the GMLC requesting location information, to increase the flexibility of the solution.

[0013] In relation to the first aspect, in some implementations of the first aspect, determining whether the first LMF should allow a positioning request from a GMLC requesting the location information based on an association relationship includes the first LMF allowing the positioning request from the GMLC requesting the location information if the association relationship is that the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise device.

[0014] Based on this solution, the first LMF can allow positioning requests from the GMLC of the same device or the same enterprise device to ensure the security of device information.

[0015] In relation to the first aspect, in some implementations of the first aspect, the method further includes the first LMF determining location information, and the first positioning request response information includes the location information.

[0016] Based on this solution, the first LMF can send location information of the terminal device initiating the positioning request to the AMF via the first positioning request response information, so that the AMF feeds back the location information to the terminal device.

[0017] In relation to the first aspect, in some implementations of the first aspect, determining whether the first LMF should allow a positioning request from a GMLC requesting the location information based on an association relationship includes the first LMF not allowing a positioning request from a GMLC requesting the location information if the association relationship is such that the first LMF and the GMLC requesting the location information do not belong to the same device or the same enterprise device.

[0018] Based on this solution, the first LMF can reject positioning requests from GMLCs of different devices or different enterprise devices to ensure the security of device information.

[0019] In relation to the first aspect, in some implementations of the first aspect, determining whether the first LMF should allow a positioning request from a GMLC requesting the location information based on an identifier of the GMLC requesting the location information includes the first LMF sending authentication information to the first GMLC, the first LMF receiving an authentication result from the first GMLC, and the first LMF determining whether the GMLC requesting the location information should be allowed to perform positioning based on the authentication result, wherein the first GMLC and the first LMF belong to the same device or the same enterprise user, and the first positioning request information further includes authentication information, and the authentication information is used to determine whether to allow the positioning request from the GMLC requesting the location information.

[0020] Based on this solution, the first LMF requests the first GMLC to perform a second check on the GMLC requesting the location information to determine whether the GMLC requesting the location information is deployed on the same device or the same enterprise device, thus improving the accuracy of the check in the manner of the second check.

[0021] In relation to the first aspect, in some implementations of the first aspect, determining whether the first LMF should allow a positioning request from the GMLC requesting the location information based on an identifier of the GMLC requesting the location information includes determining whether the first LMF should allow a positioning request from the GMLC requesting the location information based on authentication information.

[0022] Based on the solution, the first LMF may determine whether to allow a positioning request from a GMLC requesting location information based on the authentication result of the first GMLC, in order to increase the flexibility of the solution.

[0023] In relation to the first aspect, in some implementations of the first aspect, when the first positioning request response information is used to notify that the positioning request for the terminal device is permitted, the method further includes the first LMF determining location information, and the first positioning request response information includes the location information.

[0024] Based on this solution, the first LMF can send location information of the terminal device initiating the positioning request to the AMF via the first positioning request response information, so that the AMF feeds back the location information to the terminal device.

[0025] According to a second aspect, a communication method is provided. The method may be performed by AMF, or may be performed by a component (such as a chip or a circuit) of AMF. This is not limited here. For ease of explanation, the following uses an example in which the method is performed by AMF for explanation.

[0026] The method may include: an AMF receives a positioning request from a GMLC requesting location information, the location information being a location of a terminal device, the AMF obtains an address of a first LMF corresponding to the GMLC requesting the location information, the AMF sends first positioning request information to the first LMF, the first positioning request information includes an identifier of the GMLC requesting the location information, the AMF receives first positioning request response information from the first LMF, the first positioning request response information is used to inform whether the positioning request for the terminal device is allowed.

[0027] Based on the solution, after receiving a positioning request, the AMF obtains the address of the first LMF corresponding to the GMLC requesting the location information based on the identifier of the GMLC requesting the location information, which enables the AMF to find the LMF deployed on the same device or the same enterprise device as the GMLC requesting the location information, so as to ensure the security of the device information.

[0028] In relation to the second aspect, in some implementations of the second aspect, the AMF obtaining an address of a first LMF corresponding to the GMLC requesting location information includes the AMF obtaining an address of the first LMF based on registration subscription information, wherein the registration subscription information includes an address of the first LMF or an identifier of the first LMF.

[0029] Based on this solution, the AMF can obtain the address of the first LMF based on registration subscription information to increase the flexibility of the solution for obtaining the address of the first LMF.

[0030] In relation to the second aspect, in some implementations of the second aspect, when the subscription registration information includes an identifier of the first LMF, the method further includes the AMF obtaining an address of the first LMF based on the identifier of the first LMF.

[0031] Based on this solution, the AMF can obtain the address of the first LMF based on the identifier of the first LMF to increase the flexibility of the solution for obtaining the address of the first LMF.

[0032] In relation to the second aspect, in some implementations of the second aspect, the AMF obtaining an address of a first LMF corresponding to a GMLC requesting location information includes the AMF obtaining information from the GMLC requesting location information, and the AMF obtaining the address of the first LMF based on the information from the GMLC requesting location information, wherein the information from the GMLC requesting location information includes an address of the first LMF or an identifier of the first LMF.

[0033] Based on this solution, the AMF may receive the address of the first LMF sent by the GMLC requesting location information to increase the flexibility of the solution for obtaining the address of the first LMF.

[0034] In relation to the second aspect, in some implementations of the second aspect, when the information from the GMLC requesting the location information includes an identifier of the first LMF, the method further includes the AMF obtaining an address of the first LMF based on the identifier of the first LMF.

[0035] Based on this solution, the AMF can obtain the address of the first LMF based on the identifier of the first LMF to increase the flexibility of the solution for obtaining the address of the first LMF.

[0036] In relation to the second aspect, in some implementations of the second aspect, the information from the GMLC requesting the location information further includes an identifier of the GMLC requesting the location information and authentication information, and the authentication information is used to determine whether to allow a positioning request from the GMLC requesting the location information.

[0037] Based on this solution, the AMF receives authentication information from a GMLC requesting location information and sends the authentication information to the first LMF, so that the first LMF can determine whether the GMLC requesting location information is a GMLC deployed together with the first LMF based on the authentication result obtained based on the authentication information to ensure security of the device information.

[0038] In relation to the second aspect, in some implementations of the second aspect, the first positioning request information further includes authentication information.

[0039] Based on the solution, the AMF sends authentication information to the first LMF by using the first positioning request information to enhance the flexibility of the solution.

[0040] In relation to the second aspect, in some implementations of the second aspect, when the first positioning request response information is used to notify that a positioning request of the terminal device is permitted, the first positioning request response information includes location information.

[0041] Based on this solution, the first LMF can send location information of the terminal device initiating the positioning request to the AMF via the first positioning request response information, so that the AMF feeds back the location information to the terminal device.

[0042] In relation to the second aspect, in some implementations of the second aspect, the method further includes the AMF obtaining an address of the GMLC requesting the location information based on an identifier of the GMLC requesting the location information, and the AMF sending the location information to the GMLC requesting the location information.

[0043] Based on the solution, the AMF can send location information to the GMLC requesting the location information based on the identifier of the GMLC requesting the location information, so that the terminal device obtains the location information to enhance the flexibility of the solution.

[0044] According to a third aspect, a communication method is provided. The method may be performed by a first GMLC, or may be performed by a component (e.g., a chip or a circuit) of the first GMLC. This is not limited here. For ease of explanation, the following uses an example in which the method is performed by the first GMLC for explanation.

[0045] The method may include: a first GMLC receiving an authentication request from a first LMF, the authentication request including authentication information, the first GMLC determining an authentication result based on the authentication information, the authentication result indicating whether a positioning request from the GMLC requesting the location information is allowed, the first GMLC sending the authentication result to the first LMF, the first GMLC and the first LMF belong to the same device or the same enterprise device, and the authentication information is used to determine whether a positioning request from a gateway mobile location center network element requesting the location information should be allowed.

[0046] Based on this solution, the first GMLC can determine, based on the authentication information, whether the GMLC requesting the location information is co-deployed or co-located with the first GMLC, and feed back the authentication result to the first LMF, thereby increasing the flexibility of the solution in which the first LMF determines whether to allow a positioning request from the GMLC requesting the location information.

[0047] In relation to the third aspect, in some implementations of the third aspect, if the authentication information is valid or the authentication information is authentication information generated by the first GMLC, the first GMLC determining an authentication result based on the authentication information includes the first GMLC determining that the authentication result is that a positioning request from the GMLC requesting location information is permitted.

[0048] Based on this solution, once the first GMLC determines that the authentication information is valid or generated by the first GMLC, a positioning request from the GMLC requesting location information is allowed to ensure the security of the device information.

[0049] In relation to the third aspect, in some implementations of the third aspect, if the authentication information is invalid or the authentication information is not authentication information generated by the first GMLC, the first GMLC determining an authentication result based on the authentication information includes the first GMLC determining that the authentication result is that a positioning request from the GMLC requesting location information is not permitted.

[0050] Based on this solution, if the first GMLC determines that the authentication information is invalid or is not generated by the first GMLC, a positioning request from the GMLC requesting location information is rejected to ensure the security of the device information.

[0051] According to a fourth aspect, a communication method is provided. The method may be performed by AMF, or may be performed by a component (such as a chip or circuit) of AMF. This is not limited here. For ease of explanation, the following uses an example in which the method is performed by AMF for explanation.

[0052] The method may include: the access management network element receives second positioning request information from the terminal device, the second positioning request information is used to obtain location information of the terminal device, the AMF obtains an address of a first LMF, the AMF sends third positioning request information to the first LMF, the third positioning request information is used to request to obtain the location information, the location information is a location of the terminal device, the third positioning request information includes an identifier of the first GMLC, the AMF receives third positioning request response information from the first LMF, the third positioning request response information indicates whether the positioning request for the terminal device is allowed, the first GMLC and the first LMF belong to the same device or the same enterprise device, the second positioning request information includes policy data information, and the policy data information includes an identifier of the first GMLC.

[0053] Based on the solution, after receiving a positioning request, the AMF obtains the address of the first LMF corresponding to the GMLC requesting the location information based on the identifier of the GMLC requesting the location information, which enables the AMF to find the LMF deployed on the same device or the same enterprise device as the GMLC requesting the location information, so as to ensure the security of the device information.

[0054] In relation to the fourth aspect, in some implementations of the fourth aspect, the AMF obtaining an address of the first LMF includes the AMF obtaining the address of the first LMF based on policy data information, and the policy data information further includes information regarding the first LMF and information regarding the first GMLC.

[0055] Based on this solution, information regarding the first LMF and the first GMLC serving the terminal device is carried in policy data information in the registration process of the terminal device so that the AMF can obtain the LMF and GMLC belonging to the same device or the same enterprise device in the LMF search procedure.

[0056] In relation to the fourth aspect, in some implementations of the fourth aspect, when the policy data information includes an identifier of the first LMF, the method further includes the AMF obtaining an address of the first LMF based on the identifier of the first LMF.

[0057] Based on the solution, the AMF may obtain the address of the first LMF based on an identifier of the first LMF (e.g., a network element instance identifier of the first GMLC or a hostname of the first LMF) to increase the flexibility of the solution.

[0058] In relation to the fourth aspect, in some implementations of the fourth aspect, when the second positioning request response information is used to notify that a positioning request for the terminal device is permitted, the second positioning request response information includes location information.

[0059] Based on this solution, the first LMF can send location information of the terminal device that initiates the positioning request to the AMF by using the second positioning request response information, so that the AMF feeds back the location information to the terminal device.

[0060] In relation to the fourth aspect, in some implementations of the fourth aspect, the method further includes the AMF obtaining an address of the first GMLC based on an identifier of the first GMLC, and the AMF sending location information to the first GMLC.

[0061] Based on the solution, the AMF can send location information to the first GMLC based on the identifier of the first GMLC, so that the terminal device obtains the location information to enhance the flexibility of the solution.

[0062] According to a fifth aspect, a communication method is provided. The method may be performed by a terminal device, or may be performed by a component (e.g., a chip or a circuit) of the terminal device. This is not limited here. For ease of explanation, the following uses an example in which the method is performed by a terminal device for explanation.

[0063] The method may include: a terminal device receives policy data information from a PCF, the policy data information includes information about a first LMF and a first GMLC belonging to the terminal device, the terminal device sends second positioning request information to an AMF, the second positioning request information is used to obtain location information of the terminal device, the location information indicates a location of the terminal device, and the first GMLC and the first LMF belong to the same device or the same enterprise device.

[0064] Based on this solution, information regarding the first LMF and the first GMLC serving the terminal device is carried in policy data information in the registration process of the terminal device so that the AMF can obtain the LMF and GMLC belonging to the same device or the same enterprise device in a subsequent procedure of searching for the LMF.

[0065] According to a sixth aspect, there is provided a communication device, comprising a unit configured to perform the method according to the sixth aspect. The communication device may be a first LMF or may be implemented by a chip or circuit located on the first LMF, which is not a limitation in this application.

[0066] The communication device The present invention includes a transceiver unit configured to receive first positioning request information from an AMF, the first positioning request information including an identifier of a GMLC requesting location information, the location information indicating a location of a terminal device initiating the positioning request, and a processing unit configured to determine whether the positioning request from the GMLC requesting the location information is allowed based on the identifier of the GMLC requesting the location information, the transceiver unit being further configured to send first positioning request response information to the AMF, the first positioning request response information being used to notify the AMF whether the positioning request for the terminal device is allowed.

[0067] In relation to the sixth aspect, in some embodiments of the sixth aspect, the processing unit is further configured to determine an association relationship based on an identifier of the GMLC requesting the location information, and the processing unit is further configured to determine whether to allow a positioning request from the GMLC requesting the location information based on the association relationship, and the association relationship indicates whether the first LMF and the GMLC requesting the location information belong to the same device or belong to the same enterprise device.

[0068] In relation to the sixth aspect, in some embodiments of the sixth aspect, the processing unit is further configured to determine an association relationship based on an identifier of a first GMLC corresponding to the first LMF and an identifier of the GMLC requesting the location information, and the first GMLC and the first LMF belong to the same device or the same enterprise user.

[0069] In relation to the sixth aspect, in some implementations of the sixth aspect, if the association relationship is that the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise user, the processing unit is further configured to allow a positioning request from the GMLC requesting the location information.

[0070] In relation to the sixth aspect, in some embodiments of the sixth aspect, the processing unit is further configured to determine location information, and the first positioning request response information includes the location information.

[0071] In relation to the sixth aspect, in some implementations of the sixth aspect, if the association relationship is such that the first LMF and the GMLC requesting the location information do not belong to the same device or the same enterprise user, the processing unit is further configured to not allow a positioning request from the GMLC requesting the location information.

[0072] In relation to the sixth aspect, in some embodiments of the sixth aspect, the transceiver unit is further configured to send authentication information to the first GMLC, the transceiver unit is further configured to receive an authentication result from the first GMLC, and the processing unit is further configured to determine, based on the authentication result, whether the GMLC requesting the location information is to be allowed to perform positioning, wherein the first GMLC and the first LMF belong to the same device or the same enterprise user, and the first positioning request information further includes authentication information, and the authentication information is used to determine whether the positioning request from the GMLC requesting the location information should be allowed.

[0073] In relation to the sixth aspect, in some embodiments of the sixth aspect, the processing unit is further configured to determine, based on the authentication information, whether to allow a positioning request from a GMLC requesting location information.

[0074] In relation to the sixth aspect, in some implementations of the sixth aspect, when the first positioning request response information is used to notify that the positioning request for the terminal device is permitted, the processing unit is further configured to determine location information, and the first positioning request response information includes the location information.

[0075] For the description of the related contents and advantageous effects of the communication device provided in the sixth aspect, please refer to the method described in the first aspect, and the details will not be described again here.

[0076] According to a seventh aspect, there is provided a communication device, comprising a unit configured to perform the method according to the second aspect. The communication device may be an AMF or may be implemented by a chip or circuit arranged on the AMF, which is not a limitation in this application.

[0077] The communication device The present invention includes a transceiver unit configured to receive a positioning request from a GMLC requesting position information, the position information indicating a position of a terminal device initiating the positioning request, and a processing unit configured to obtain an address of a first LMF corresponding to the GMLC requesting the positioning information. The transceiver unit is further configured to send first positioning request information to the first LMF, the first positioning request information including an identifier of the GMLC requesting the positioning information. The transceiver unit is further configured to receive first positioning request response information from the first LMF, the first positioning request response information being used to inform whether the positioning request for the terminal device is allowed.

[0078] In relation to the seventh aspect, in some embodiments of the seventh aspect, the transceiver unit is further configured to obtain registration subscription information, and the processing unit is further configured to obtain an address of the first LMF based on the registration subscription information, and the registration subscription information includes the address of the first LMF or an identifier of the first LMF.

[0079] In relation to the seventh aspect, in some implementations of the seventh aspect, when the registration subscription information includes an identifier of the first LMF, the processing unit is further configured to obtain an address of the first LMF based on the identifier of the first LMF.

[0080] In relation to the seventh aspect, in some embodiments of the seventh aspect, the transceiver unit is further configured to receive information from a GMLC requesting location information, and the processing unit is further configured to obtain an address of the first LMF based on the information from the GMLC requesting location information, and the information from the GMLC requesting location information includes an address of the first LMF or an identifier of the first LMF.

[0081] In relation to the seventh aspect, in some embodiments of the seventh aspect, the processing unit is further configured to obtain an address of the first LMF based on the identifier of the first LMF.

[0082] In relation to the seventh aspect, in some embodiments of the seventh aspect, the information from the GMLC requesting the location information further includes an identifier of the GMLC requesting the location information and authentication information, and the authentication information is used to determine whether to allow a positioning request from the GMLC requesting the location information.

[0083] In relation to the seventh aspect, in some implementations thereof, the first positioning request information further includes authentication information.

[0084] In relation to the seventh aspect, in some implementations of the seventh aspect, when the first positioning request response information is used to notify that a positioning request for the terminal device is permitted, the first positioning request response information includes location information.

[0085] In relation to the seventh aspect, in some embodiments of the seventh aspect, the processing unit is further configured to obtain an address of the GMLC requesting the location information based on an identifier of the GMLC requesting the location information, and the transceiver unit is further configured to transmit the location information to the GMLC requesting the location information.

[0086] For the relevant content description and advantageous effects of the communication device provided in the seventh aspect, please refer to the method described in the second aspect, and the details will not be described again here.

[0087] According to an eighth aspect, there is provided a communication device, comprising a unit configured to perform the method according to the third aspect. The communication device may be a first GMLC or may be implemented by a chip or circuit located in the first GMLC, which is not a limitation in this application.

[0088] The communication device The method includes: receiving an authentication request from a first LMF, the authentication request including authentication information; and determining an authentication result based on the authentication information, the authentication result indicating whether a positioning request from a GMLC requesting the location information is permitted. The transceiver unit is further configured to send the authentication result to the first LMF, the first GMLC and the first LMF belong to the same device or the same enterprise device, and the authentication information is used to determine whether a positioning request from a gateway mobile location center network element requesting the location information is permitted.

[0089] In relation to the eighth aspect, in some implementations of the eighth aspect, if the authentication information is valid or the authentication information is authentication information generated by the first GMLC, the processing unit is further configured to determine that the authentication result is that a positioning request from the GMLC requesting the location information is permitted.

[0090] In relation to the eighth aspect, in some implementations of the eighth aspect, if the authentication information is invalid or the authentication information is not authentication information generated by the first GMLC, the processing unit is further configured to determine an authentication result based on the authentication information, which includes the first GMLC determining that the authentication result is that a positioning request from the GMLC requesting location information is not permitted.

[0091] For the description of the relevant contents and advantageous effects of the communication device provided in the eighth aspect, please refer to the method described in the third aspect, and the details will not be described again here.

[0092] According to a ninth aspect, there is provided a communication device, comprising a unit configured to perform the method according to the fourth aspect. The communication device may be an AMF or may be implemented by a chip or circuit arranged on the AMF, which is not a limitation in this application.

[0093] The communication device The present invention includes a transceiver unit configured to receive second positioning request information from a terminal device, the second positioning request information being used to obtain location information of the terminal device, and a processing unit configured to obtain an address of a first LMF. The transceiver unit is further configured to send third positioning request information to the first LMF, the third positioning request information being used to request to obtain the location information, the location information indicating a location of the terminal device, and the third positioning request information including an identifier of the first GMLC. The transceiver unit is further configured to receive third positioning request response information from the first LMF, the third positioning request response information indicating whether to allow the positioning request for the terminal device, the first GMLC and the first LMF belonging to the same device or the same enterprise device, the second positioning request information including policy data information, and the policy data information including an identifier of the first GMLC.

[0094] In relation to the ninth aspect, in some embodiments of the ninth aspect, the processing unit is further configured to obtain an address of the first LMF based on policy data information, the policy data information including information regarding the first LMF and information regarding the first GMLC.

[0095] In relation to the ninth aspect, in some implementations of the ninth aspect, the processing unit is configured to obtain an address of the first LMF based on an identifier of the first LMF.

[0096] In relation to the ninth aspect, in some implementations of the ninth aspect, when the second positioning request response information is used to notify that a positioning request for the terminal device is permitted, the second positioning request response information includes location information.

[0097] In relation to the ninth aspect, in some embodiments of the ninth aspect, the processing unit is configured to obtain an address of the first GMLC based on an identifier of the first GMLC, and the transceiver unit is further configured to transmit the location information to the first GMLC.

[0098] For the description of the relevant contents and advantageous effects of the communication device provided in the ninth aspect, please refer to the method described in the fourth aspect, and the details will not be described again here.

[0099] According to a tenth aspect, there is provided a communication device, comprising a unit configured to perform the method according to the fifth aspect. The communication device may be a terminal device, and may be implemented by a chip or a circuit located in the terminal device, which is not a limitation in this application.

[0100] The communication device The method includes: receiving policy data information from a PCF, the policy data information including information about a first LMF and a first GMLC belonging to a terminal device; the transceiver unit is further configured to send second positioning request information to an AMF, the second positioning request information being used to obtain location information of the terminal device, the location information indicating a location of the terminal device, and the first GMLC and the first LMF belong to the same device or the same enterprise device.

[0101] For the description of the related contents and advantageous effects of the communication device provided in the tenth aspect, please refer to the method described in the fifth aspect, and the details will not be described again here.

[0102] According to an eleventh aspect, there is provided a communication device, the device comprising: a memory configured to store a program; and at least one processor configured to execute a computer program or instructions stored in the memory to perform the method according to any one of the possible implementations of the first to fifth aspects.

[0103] In one embodiment, the device is a first LMF.

[0104] In other embodiments, the device is a chip, chip system, or circuitry used in the first LMF.

[0105] According to a twelfth aspect, the application provides a processor configured to perform the method provided in the preceding aspect.

[0106] Unless otherwise specified, or where operations such as transmitting and acquiring / receiving related to a processor are not inconsistent with the actual functionality or internal logic of the operations in the relevant description, operations may be understood as operations such as output, reception, and input of a processor, or operations such as transmitting and receiving performed by radio frequency circuits and antennas, which is not limited in this application.

[0107] According to a thirteenth aspect, there is provided a computer readable storage medium, the computer readable medium storing program code for execution by a device, the program code being used to execute the method in any one of the possible implementations of the first to fifth aspects.

[0108] According to a fourteenth aspect, there is provided a computer program product comprising instructions which, when executed on a computer, cause the computer to perform a method according to any one of the possible implementations of the first to fifth aspects.

[0109] According to a fifteenth aspect, there is provided a chip, the chip including a processor and a communication interface, the processor reading instructions stored in a memory via the communication interface to execute the method according to any one of possible implementations of the first to fifth aspects.

[0110] Optionally, in one embodiment, the chip further comprises a memory. The memory stores a computer program or instruction. The processor is configured to execute the computer program or instruction stored in the memory. When the computer program or instruction is executed, the processor is configured to execute the method in any one of the possible implementations of the first to fifth aspects.

[0111] According to a sixteenth aspect, there is provided a transmission method switching system including one or more of a first LMF, an AMF, and a first GMLC.

[0112] According to a seventeenth aspect, there is provided a transmission method switching system including a first LMF and an AMF. [Brief description of the drawings]

[0113] [Figure 1] FIG. 1 is a schematic diagram of a network architecture applicable to one embodiment of this application. [Diagram 2] 2 is a schematic diagram of a communication method 200 according to an embodiment of the present application. [Diagram 3] 3 is a schematic flow chart of a communication method 300 according to an embodiment of the present application. [Figure 4] 4 is a schematic flow chart of a communication method 400 according to an embodiment of the present application. [Diagram 5] 5 is a schematic flow chart of a communication method 500 according to an embodiment of the present application. [Figure 6] 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. [Figure 7] 7 is a schematic block diagram of another communication device 700 according to an embodiment of the present application. [Figure 8] FIG. 8 is a schematic diagram of a chip system 800 according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0114] The following describes the technical solutions of the embodiments in this application in conjunction with the accompanying drawings.

[0115] The technical solutions in the embodiments of this application may be applied to various communication systems, such as 5th generation (5G) or new radio (NR) systems, satellite communication systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions provided in this application may further be applied to future communication systems, such as 6th generation mobile communication systems. The technical solutions in the embodiments of this application may further be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), industrial control, intelligent transportation system (ITS), mobile broadband, multimedia, and Internet of Things (IoT) communication systems, or other communication systems.

[0116] To facilitate understanding of the embodiments of this application, a network architecture applicable to the embodiments of this application will first be described in detail with reference to FIG.

[0117] For example, Figure 1 is a schematic diagram of a network architecture applicable to one embodiment of this application. As shown in Figure 1, for example, the network architecture may include, but is not limited to, a (radio) access network ((R)AN) device, an access and mobility management function (AMF), a network exposure function (NEF), an application function (AF), a location management function (LMF), a unified data management (UDM), a gateway mobile location center (GMLC), a location retrieval function (LRF), and a user equipment (UE).

[0118] The network elements shown in FIG. 1 are briefly described below.

[0119] 1. A UE may also be called a terminal device, access terminal, subscriber unit, subscriber station, mobile station, mobile console, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.

[0120] The terminal device may be a device that provides voice / data to a user, for example a handheld device or an in-vehicle device with wireless connectivity. Currently, some terminals include, for example, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal of industrial control, a wireless terminal of self driving, a wireless terminal of remote medical surgery, a wireless terminal of smart grid, a wireless terminal of transportation safety, a wireless terminal of smart city, a wireless terminal of smart home, a cellular telephone, a cordless telephone, a session initiation protocol (SIP) telephone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device or a computing device with wireless communication capability, or other processing device connected to a wireless modem, a wearable device, a terminal device of a 5G network, or a future evolved public land mobile network (PLAN). A terminal device of a PLMN (Provisional Local Network), which is not limited in the embodiment of this application.

[0121] By way of example and not limitation, in the embodiments of this application, the terminal device may alternatively be a wearable device. A wearable device may also be called a wearable intelligent device, which is a collective term for wearable devices that are intelligently designed and developed for daily wear using wearable technology, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that can be directly attached to the body or integrated into the user's clothing or accessories. A wearable device is not just a hardware device, but can implement powerful functions through software support, data exchange, and cloud interaction. General-purpose wearable smart devices include full-featured large devices that can implement full or partial functions without relying on a smartphone, such as a smart watch or smart glasses, and devices that focus only on certain application functions and need to work with other devices, such as a smartphone, such as various smart bands or smart jewelry for monitoring physical symptoms.

[0122] In addition, the terminal device of the embodiment of this application may alternatively be a terminal device in an IoT system. IoT is an important part of the development of next-generation information technology. The main technical feature of IoT is to connect things to a network using communication technology to implement an intelligent network for interconnection between people and machines and between things.

[0123] It should be noted that the terminal device and the access network device can communicate with each other using an air interface technology (e.g., NR technology or LTE technology). The terminal device and the terminal device can communicate with each other using an air interface technology (e.g., NR technology or LTE technology).

[0124] In an embodiment of this application, an apparatus configured to perform the functions of a terminal device may be a terminal device, or may be an apparatus capable of supporting a terminal device in performing functions, such as a chip system or a chip. The apparatus may be integrated into a terminal device. In an embodiment of this application, a chip system may include a chip, or may include a chip and other individual components.

[0125] 2. (R)AN device may provide a function to access a communication network for authorized users in a particular area, and may specifically include a wireless network device in a 3rd generation partnership project (3GPP) network, or may include an access point in a non-3GPP network. For ease of explanation, hereinafter, AN device is used for expression.

[0126] AN devices may use different radio access technologies. Currently, there are two types of radio access technologies: 3GPP access technologies (e.g., radio access technologies used in 3rd generation (3G), 4th generation (4G), or 5G systems) and non-3GPP access technologies. 3GPP access technologies are access technologies that comply with 3GPP standard specifications. For example, access network devices in 5G systems are called next generation Node Base stations (gNBs) or RAN devices. Non-3GPP access technologies may include air interface technologies represented by access points (APs) in wireless fidelity (Wi-Fi), worldwide interoperability for microwave access (WiMAX), code division multiple access (CDMA), etc. AN devices may enable interworking between terminal devices and 3GPP core networks by using non-3GPP technologies.

[0127] The AN device may be responsible for air interface side functions such as radio resource management, Quality of Service (QoS) management, data compression and encryption, etc. The AN device provides access services to terminal devices, and further completes the transfer of control signals and user data between the terminal devices and the core network.

[0128] For example, the AN device may include, but is not limited to, a macro base station, a micro base station (also called a small cell), a radio network controller (RNC), a NodeB (NodeB, NB), a base station controller (BSC), a base transceiver station (BTS), a home NodeB (e.g., home evolved NodeB, or home NodeB, HNB), a baseband unit (BBU), an AP in a Wi-Fi system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP). Alternatively, the AN device may include a gNB or a transmission point (TRP or TP) of a 5G (e.g., NR) system, or one antenna panel or a group of antenna panels (including multiple antenna panels) of a base station of a 5G system. Alternatively, the AN device may include a network node constituting a gNB or a transmission point, such as a distributed unit (DU), or a base station of a next-generation 6G communication system. The particular technology used by the AN device and the particular device configuration are not limited to the embodiments of this application.

[0129] 3. The access management network element is mainly used for functions such as access control, mobility management, and attachment and detachment. The access management network element may further act as an anchor for the connection between N1 signaling (i.e., N1 interface signaling, referred to as N1 signaling for brevity) and N2 signaling (i.e., N2 interface signaling, referred to as N2 signaling for brevity) and provide routing of N1 / N2 session management (SM) messages to the session management network element. The access management network element may further maintain and manage the status information of the UE.

[0130] In the 5G communication system, the access management network element may be an AMF. In future communication systems, the access management network element may still be an AMF, or may have other names, which is not limited in this application.

[0131] 4. The network capability exposure network element is mainly configured to manage the exposure network data and external applications. The network exposure network element can provide corresponding security guarantees to ensure security from external applications to 3GPP networks, and provide functions such as external application quality of service (QoS) customization capability exposure, mobility status event subscription, and AF request delivery.

[0132] In a 5G communication system, the network exposure network element may be a NEF. In future communication systems, the network exposure network element may still be a NEF or may have other names, which is not limited in this application.

[0133] 5. The application network element is mainly configured to serve the 3GPP network, for example, to interact with the policy control network element to perform policy control.

[0134] In the 5G communication system, the application network element may be an AF. In future communication systems, the application network element may still be an AF, or may have other names, which is not limited in this application.

[0135] 6. The location management network element is mainly configured to manage all resources used for UE positioning and calculate the final positioning result and accuracy. The location management network element is further configured to connect to the AMF via an NL1 interface for various UE positioning signaling transmissions. The location management network element is further configured to negotiate positioning capabilities with the UE, send assistance data, and request positioning according to the long-term evolution positioning protocol (LPP). The location management network element is further configured to exchange RAN positioning information with the RAN according to the new radio positioning protocol a (NRPPa).

[0136] In a 5G communication system, the location management network element may be an LMF. In future communication systems, the location management network element may still be an LMF or may have other names, which is not limited in this application.

[0137] 7. The data management network element is mainly configured to manage subscription data of the UE, including storing and managing UE identifiers, access permissions of the UE, etc. The data management network element can further generate 3GPP authentication credentials for the UE. The data management network element can further register and maintain the network element currently serving the UE (e.g., the AMF represented by AMFID 1 is the current serving AMF of the UE).

[0138] In the 5G communication system, the data management network element may be UDM. In future communication systems, the unified data management may still be UDM or may have other names, which is not limited in this application.

[0139] 8. The gateway mobile location center network element sends a positioning request to the AMF via the NL2 interface and returns the positioning result to the positioning center.

[0140] In a 5G communication system, the gateway mobile location center network element may be a GMLC. In future communication systems, the gateway mobile location center network element may still be a GMLC or may have other names, which is not limited in this application.

[0141] 9. The location function network element, which may be configured with GMLC or separately, is responsible for obtaining or verifying location information and providing routing and related information to the UE that has initiated the emergency session.

[0142] In the 5G communication system, the location location network element may be an LRF. In future communication systems, the location location network element may still be an LRF or may have other names, which is not limited in this application.

[0143] In the network architecture shown in Figure 1, network elements can communicate with each other via interfaces shown in the figure, and some interfaces can be implemented in the manner of service-based interfaces. As shown in Figure 1, UE and AMF can communicate with each other via N1 interface. RAN and AMF can communicate with each other via N2 interface. Relationships between other interfaces and network elements are shown in Figure 1. For the sake of brevity, details will not be described in this specification.

[0144] It should be further understood that the above network architectures are merely examples for illustration purposes, and the network architectures to which the embodiments of this application are applicable are not limited thereto. Any network architecture capable of implementing the functions of the network elements is applicable to the embodiments of this application.

[0145] It should be further understood that the AMF, UDM, LMF, NEF, LRF, GMLC, etc. shown in Figure 1 may be understood as network elements configured to implement different functions, and may be combined into a network slice, for example, as needed. These network elements may be independent devices, may be integrated into the same device to perform different functions, may be network elements in a hardware device, may be software functions running on dedicated hardware, or may be virtualized functions instantiated on a platform (e.g., a cloud platform). The specific form of the network elements is not limited in this application.

[0146] It should be further understood that one or more services may be obtained by dividing into network elements or functions. Furthermore, there may be services independent of network functions. In this application, an instance of a function, an instance of a service included in a function, or an instance of a service independent of a network function may be referred to as a service instance. Furthermore, in actual deployment, network elements having different functions may be co-deployed. For example, an access and mobility management network element and a session management network element may be co-deployed, and a session management network element and a user plane network element may be co-deployed. When two network elements are co-located, the interaction between the two network elements provided in the embodiments of this application may be the internal operation of the co-located network element or may be omitted.

[0147] It should be further understood that the above names are defined merely to distinguish different functions and should not constitute any limitation to this application. This application does not exclude the possibility of using other names in 6G networks and other future networks. For example, in a 6G network, some or all of the network elements may still use 5G terminology or may use other names.

[0148] It should be further understood that the names of the interfaces between the network elements in Figure 1 are merely examples, and that the interfaces may have other names in a particular implementation, which is not specifically limited in this application, and the names of the messages (or signaling) transmitted between the network elements are merely examples, and do not limit the functionality of the messages.

[0149] In order to facilitate understanding of the embodiments of this application, a brief description of terms or techniques in this application will be provided.

[0150] 1. Location service (LCS) The positioning service architecture of the 5G network has four parts: terminal device, radio access network RAN, core network, and positioning APP. The core network includes AMF, UDM, GMLC, and LMF network elements. GMLC and LRF may be deployed convergently or separately. GMLC communicates with AMF via NL2 interface, and LMF communicates with AMF via NL1 interface. The positioning APP, i.e., LCS Client, is an external application that triggers the positioning function.

[0151] Based on the positioning request initiator, there are three types of standard positioning services: Mobile Originating Location Request (MO-LR), Mobile Terminating Location Request (MT-LR), and Network Induced Location Request (NI-LR).

[0152] 2. Mobile Termination Location Request MT-LR is any positioning request sent from a location service client LCS Client to an LCS Server. This method provides a passive inquiry mechanism for the party for which positioning is performed. The MT-LR request mode is the most common mode because the LCS can be used to develop various specific applications based on the positioning capabilities of the operator network, and users can identify their positioning requests based on various positioning service access modes.

[0153] It should be noted that all terms or techniques are prior art and are not limiting.

[0154] The term "and / or" in this specification is merely an association relationship to describe related objects, and indicates that three relationships may exist. For example, A and / or B may represent the following three cases: only A exists, both A and B exist, and only B exists. In addition, the character " / " in this specification generally indicates an "or" relationship between related objects.

[0155] The above is a brief description of the terms used in this application, and the details will not be described in the following embodiments. Hereinafter, the communication method provided in the embodiments of this application will be described in detail with reference to the accompanying drawings. The embodiments provided in this application can be applied to the network architecture shown in Figure 1. This is not limited.

[0156] Based on the network architecture shown in FIG. 1, when performing a positioning service, the AMF queries and obtains the LMF and GMLC devices separately. Currently, in the 3GPP standard, the AMF cannot select the LMF designated by the GMLC or the LMF and GMLC deployed in the same location area. Therefore, in the positioning service, in order to ensure information security, how to select the LMF and GMLC that are in the same location area or deployed on the same device to perform positioning becomes an urgent problem to be solved in the industry.

[0157] This application provides a communication method for selecting an appropriate network element for positioning to improve information security. Hereinafter, the communication method provided in the embodiment of this application will be described with reference to Figs. 2 to 5.

[0158] 2 is a schematic diagram of a communication method 200 according to an embodiment of this application. The method 200 may include the following steps.

[0159] S201: A GMLC requesting location information sends a positioning request to the AMF.

[0160] In response, the AMF receives a positioning request from the GMLC requesting location information.

[0161] It should be understood that after the terminal device triggers a positioning request, the GMLC to which the terminal device belongs, i.e., the GMLC requesting the location information, sends a positioning request to the AMF to request to obtain the location information. The location information is the location of the terminal device. The location information may be information such as longitude, latitude, altitude, etc. This is not limited.

[0162] The positioning request includes an identifier of the GMLC requesting the location information. It should be understood that the identifier of the GMLC requesting the location information is information that uniquely identifies the GMLC to which the terminal device belongs. In other words, an enterprise can define whether two GMLCs belong to the same device based on the identifier. The identifier of the GMLC requesting the location information may be a network element instance identifier of the GMLC to which the terminal device belongs, may be a hostname of the GMLC to which the terminal device belongs, may be a fully qualified domain name (FQDN) of the GMLC to which the terminal device belongs, etc. This is not limited.

[0163] Furthermore, after receiving the positioning request, the AMF determines the address of the first LMF corresponding to the GMLC requesting the location information, and requests the location information from the first LMF. The method procedure shown in FIG. 2 further includes the following steps.

[0164] S202: The AMF obtains the address of the first LMF corresponding to the GMLC requesting location information.

[0165] It should be understood that after receiving a positioning request from a GMLC requesting location information, the AMF obtains the address of the first LMF corresponding to the GMLC requesting location information based on the identifier of the GMLC requesting location information.

[0166] It should be understood that the first LMF and the first GMLC belong to the same device or the same enterprise device. In other words, the first LMF and the first GMLC are deployed at the same physical location. In other words, the first LMF and the first GMLC are in the same group of network elements serving the same device or the same enterprise device. The identifier of the first LMF corresponds to the identifier of the first GMLC. In other words, the identifier of the first GMLC corresponding to the identifier of the first LMF may be determined based on the identifier of the first LMF, or the identifier of the first LMF corresponding to the identifier of the first GMLC may be determined based on the identifier of the first GMLC.

[0167] The identifier of the first LMF may be a network element instance identifier of the first LMF, may be a host name of the first LMF, etc. This is not limited. The identifier of the first GMLC may be a network element instance identifier of the first GMLC, may be a host name of the first LMF, etc. This is not limited.

[0168] In a possible embodiment, when a user is registered, the subscription information of the terminal device includes the address of the first LMF or an identifier of the first LMF, and the AMF obtains the subscription information in the registration procedure, and the AMF searches the subscription information for the address of the first LMF corresponding to the GMLC requesting the location information based on the identifier of the GMLC requesting the location information.

[0169] Optionally, the subscription information may further include an address of the first GMLC or an identifier of the first GMLC. Based on the identifier of the GMLC requesting the location information, the AMF searches the subscription information for an identifier of the first GMLC that is the same as the identifier of the GMLC requesting the location information, and then searches for an address of the first LMF corresponding to the first GMLC based on the identifier of the first GMLC.

[0170] In another possible embodiment, when sending a positioning request to the AMF, the GMLC requesting location information simultaneously sends the address of the first LMF or the identifier of the first LMF to the AMF.

[0171] Optionally, when the GMLC requesting location information sends an identifier of the first LMF to the AMF, the AMF obtains the address of the first LMF based on the identifier of the first LMF.

[0172] In addition, the AMF requests the first LMF to obtain location information. The method procedure shown in Figure 2 further includes the following steps.

[0173] S203: The AMF sends first positioning request information to the first LMF.

[0174] In response, the first LMF receives first positioning request information from the AMF.

[0175] It should be understood that the AMF sends the first positioning request information to the first LMF based on the address of the first LMF.

[0176] The first positioning request information includes an identifier of the GMLC requesting location information.

[0177] In addition, the first LMF determines whether to allow a positioning request from a GMLC requesting location information. The method procedure shown in FIG.

[0178] S204: The first LMF determines whether to allow a positioning request from the GMLC requesting the location information based on the identifier of the GMLC requesting the location information.

[0179] It should be understood that after receiving the first positioning request information from the AMF, the first LMF determines an association relationship based on the identifier of the GMLC requesting the position information in the first positioning request information. The association relationship indicates whether the first LMF and the GMLC requesting the position information belong to the same device or belong to the same enterprise device. If the association relationship is that the first LMF and the GMLC requesting the position information belong to the same device or belong to the same enterprise device, the first LMF allows the positioning request from the GMLC requesting the position information, and the first LMF determines the position information of the terminal device. If the association relationship is that the first LMF and the GMLC requesting the position information do not belong to the same device or belong to the same enterprise device, the first LMF does not allow the positioning request from the GMLC requesting the position information.

[0180] In addition, the first LMF feeds back to the AMF the determination result of whether the positioning request is allowed. The method procedure shown in Figure 2 further includes the following steps.

[0181] S205: The first LMF sends the first positioning request response information to the AMF.

[0182] In response, the AMF receives first positioning request response information from the first LMF.

[0183] The first positioning request response information is used to inform the AMF whether the positioning request for the terminal device is allowed.

[0184] Optionally, when the first positioning request response information is used to notify the AMF that the positioning request for the terminal device is allowed, the first positioning request response information includes location information.

[0185] According to the method provided in the embodiment, after receiving a positioning request, the AMF obtains an address of a first LMF corresponding to the GMLC requesting the positioning information based on the identifier of the GMLC requesting the positioning information, and the first LMF determines whether to allow the positioning request from the GMLC requesting the positioning information based on the identifier of the GMLC requesting the positioning information. In this method, the AMF can search for the first LMF corresponding to the GMLC based on the identifier of the GMLC requesting the positioning information and transfer the identifier of the GMLC requesting the positioning information to the first LMF, so that the first LMF can determine whether the GMLC requesting the positioning information is a GMLC deployed with the first LMF and determine whether to allow the positioning request. This allows the selection of LMFs and GMLCs in the same location area for positioning in the positioning service to improve information security.

[0186] For ease of understanding, the communication method described in FIG. 2 will be further explained below with reference to FIGS.

[0187] It should be noted that the names of messages between network elements, the names of parameters in messages, etc. in the following embodiments of this application are merely examples, and other names may exist in specific implementations, which are not specifically limited in the embodiments of this application.

[0188] It should be noted that steps in the following embodiments of this application may also be cross-referenced, and terms and concepts may also be cross-referenced, which are not specifically limited in the embodiments of this application.

[0189] 3 is a schematic diagram of a communication method 300 according to an embodiment of the present application. The method 300 may include the following steps.

[0190] S301: AMF obtains subscription information.

[0191] It should be understood that when an operator system registers a user, information about the first LMF to which the user belongs is conveyed. After the registration is completed, the subscription information of the terminal device includes information about the first LMF. After the terminal device initiates a registration request, the AMF obtains the subscription information in the registration procedure.

[0192] The information about the first LMF includes an identifier of the first LMF, such as, but not limited to, a network element instance identifier of the first LMF or a host name of the first LMF.

[0193] Optionally, the information about the first LMF may further include an identifier of the first GMLC, an address of the first LMF, an FQDN of the first LMF, etc. This is not limited. The identifier of the first GMLC may be a network element instance identifier of the first GMLC, a hostname of the first LMF, etc. This is not limited.

[0194] It should be understood that the first LMF and the first GMLC belong to the same device or the same enterprise device. In other words, the first LMF and the first GMLC are deployed at the same physical location. In other words, the first LMF and the first GMLC are in the same group of network elements serving the same device or the same enterprise device. The identifier of the first LMF corresponds to the identifier of the first GMLC. In other words, the identifier of the first GMLC corresponding to the identifier of the first LMF may be determined based on the identifier of the first LMF, or the identifier of the first LMF corresponding to the identifier of the first GMLC may be determined based on the identifier of the first GMLC.

[0195] Furthermore, after triggering the positioning request, the terminal device indicates to the GMLC to request the AMF to obtain the location information. The method procedure shown in FIG.

[0196] S302: The GMLC requesting location information sends a positioning request to the AMF.

[0197] In response, the AMF receives a positioning request from the GMLC requesting location information.

[0198] The process of S302 is the same as S201, and to avoid repetition, detailed description will be omitted in this specification.

[0199] Furthermore, after receiving the positioning request, the AMF determines the address of the first LMF corresponding to the GMLC requesting the location information, and requests the location information from the first LMF. The method procedure shown in FIG. 3 further includes the following steps.

[0200] S303: The AMF obtains the address of the first LMF corresponding to the GMLC requesting location information.

[0201] It should be understood that after receiving a positioning request from a GMLC requesting location information, the AMF searches the subscription information for the address of the first LMF corresponding to the GMLC requesting location information based on the identifier of the GMLC requesting location information.

[0202] Optionally, if the subscription information includes an identifier of the first GMLC, the AMF requests a network repository function (NRF) to obtain the address of the first LMF.

[0203] Optionally, if the subscription information includes the FQDN of the first LMF, the AMF requests a domain name system (DNS) to query the address of the first LMF.

[0204] Optionally, if the subscription information includes an identifier of the first LMF, the AMF obtains an address of the first LMF from the local device configuration based on the identifier of the first LMF.

[0205] In addition, the AMF requests the first LMF to obtain location information. The method procedure shown in Figure 3 further includes the following steps.

[0206] S304: The AMF sends first positioning request information to the first LMF.

[0207] In response, the first LMF receives first positioning request information from the AMF.

[0208] The process of S304 is the same as that of S203, and to avoid repetition, detailed description thereof will be omitted in this specification.

[0209] Furthermore, after receiving the positioning request, the first LMF determines whether the GMLC requesting the location information is deployed in the same manner as the first LMF. The method procedure shown in FIG. 3 further includes the following steps.

[0210] S305 is optional. S305: The first LMF determines the association relationship.

[0211] It should be understood that after receiving the first positioning request information from the AMF, the first LMF determines an association relationship based on the identifier of the GMLC requesting the location information in the first positioning request information. The association relationship indicates whether the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise device.

[0212] In a possible embodiment, the first LMF determines the association relationship based on the network instance identifier of the first GMLC and the identifier of the GMLC requesting the location information. Specifically, the network instance identifier is in UUID version 4 format (RFC 4122), has a total of 128 bits, includes 32 hexadecimal digits, and is divided into five segments of identifiers, specifically, time-low "-", time-mid "-", time-high-and-version "-", clock-seq-and-reserved clock-seq-low "-", and node. The node is 48 bits and includes 6 bytes (8 octets). The code rules that can be developed are as follows:

[0213] [Table 1]

[0214] It should be understood that the identifier of the GMLC requesting location information has a total of 128 bits. The first LMF compares the network instance identifier of the first GMLC with the identifier of the GMLC requesting location information in order from left to right. If the two identifiers are the same, the association relationship is that the first LMF and the GMLC requesting location information belong to the same device or the same enterprise device. Conversely, if the two identifiers are different, the association relationship is that the first LMF and the GMLC requesting location information do not belong to the same device or the same enterprise device.

[0215] In a possible embodiment, if the identifier of the GMLC requesting location information is the FQDN of the GMLC requesting location information, the first LMF determines an association relationship based on the FQDN of the first GMLC and the FQDN of the GMLC requesting location information.

[0216] Specifically, both the FQDN of the first GMLC and the FQDN of the GMLC requesting location information include three fields, where the first field indicates whether to configure and preferentially select the topologically closest node, the second field is used to name the identifier of a specific interface on the node, and the third field is the canonical node name of the specific node. The first LMF compares the third field of the FQDN of the first GMLC with the third field of the FQDN of the GMLC requesting location information. If the two third fields are the same, the association relationship is that the first LMF and the GMLC requesting location information belong to the same device or the same enterprise device. Conversely, if the two third fields are different, the association relationship is that the first LMF and the GMLC requesting location information do not belong to the same device or the same enterprise device.

[0217] In a possible embodiment, the first LMF determines the association relationship based on a GMLC relationship list associated with the first LMF and an identifier of the GMLC requesting the location information. Specifically, the first LMF locally configures a GMLC relationship list associated with the first LMF. The GMLC relationship list may be a list of network instance identifiers of GMLCs authorized for positioning, addresses of GMLCs authorized for positioning, or FQDNs of GMLCs authorized for positioning. This is not limited. The first LMF queries the GMLC relationship list. If the relationship list includes an identifier of the GMLC requesting the location information, the association relationship is that the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise device. Conversely, if the relationship list does not include an identifier of the GMLC requesting the location information, the association relationship is that the first LMF and the GMLC requesting the location information do not belong to the same device or the same enterprise device.

[0218] In addition, the first LMF determines whether to allow a positioning request from a GMLC requesting location information. The method procedure shown in FIG.

[0219] S306: The first LMF decides whether to allow a positioning request from a GMLC requesting location information.

[0220] It should be understood that if the association relationship is that the first LMF and the GMLC requesting the location information belong to the same device or the same enterprise device, the first LMF allows the positioning request from the GMLC requesting the location information, or if the association relationship is that the first LMF and the GMLC requesting the location information do not belong to the same device or the same enterprise device, the first LMF does not allow the positioning request from the GMLC requesting the location information.

[0221] S307 is optional. S307: The first LMF determines the location information.

[0222] It should be understood that when the first LMF authorizes a positioning request from a GMLC that requests location information, the first LMF determines the location information. The location information indicates the location of the terminal device where the positioning request is initiated. The location information may be information such as longitude, latitude, and altitude. This is not limited.

[0223] In addition, the determination result of whether the positioning request is allowed is fed back to the AMF. The method procedure shown in Figure 3 further includes the following steps.

[0224] S308: The first LMF sends the first positioning request response information to the AMF.

[0225] In response, the AMF receives first positioning request response information from the first LMF.

[0226] The first positioning request response information is used to inform the AMF whether the positioning request for the terminal device is allowed.

[0227] S309 is optional. S309: AMF obtains location information.

[0228] Optionally, when the first positioning request response information is used to notify the AMF that the positioning request for the terminal device is allowed, it should be understood that the first positioning request response information includes location information and the AMF obtains the location information.

[0229] In addition, the AMF feeds back the determination result of whether the positioning request is allowed to the GMLC requesting the location information. The method procedure shown in Figure 3 further includes the following steps.

[0230] S310 is optional. S310: The AMF sends the location information to the GMLC requesting the location information.

[0231] It should be understood that after the AMF obtains the location information, the AMF sends the location information to the GMLC requesting the location information.

[0232] Based on this solution, information about the first LMF and the first GMLC serving the terminal device is carried in the subscription data during the user's registration, so that the AMF can obtain the LMF and GMLC belonging to the same device or the same enterprise device in a subsequent procedure of searching for the LMF. Furthermore, the identifier of the GMLC requesting the location information is forwarded to the first LMF, so that the first LMF can determine whether the GMLC and the first LMF requesting the location information belong to the same device or the same enterprise device, and further avoid positioning requests for other devices. This ensures the security of the device information.

[0233] In this method, the first LMF determines whether the GMLC requesting the location information and the first LMF belong to the same device or the same enterprise device. In order to improve security, an authentication procedure between the first LMF and the first GMLC can be added, and the first GMLC verifies again whether the GMLC requesting the location information and the first LMF belong to the same device or the same enterprise device, so as to further ensure the security of the device information in a double authentication manner. The following provides a detailed description with reference to FIG. 4.

[0234] 4 is a schematic diagram of a communication method 400 according to an embodiment of the present application. The method 400 may include the following steps.

[0235] S401: A GMLC requesting location information sends a positioning request to the AMF.

[0236] In response, the AMF receives a positioning request from the GMLC requesting location information.

[0237] It should be understood that after the terminal device is successfully registered and the terminal device triggers a positioning request, the GMLC to which the terminal device belongs, i.e., the GMLC requesting the location information, sends a positioning request to the AMF to request to obtain location information. The location information is the location of the terminal device. The location information may be information such as longitude, latitude, altitude, etc. This is not limited.

[0238] The positioning request includes information about the first LMF, an identifier of the GMLC requesting location information, and authentication information.

[0239] The information about the first LMF includes an address of the first LMF or an FQDN of the first LMF. It should be understood that the first LMF and the first GMLC belong to the same device or the same enterprise device. In other words, the first LMF and the first GMLC are deployed at the same physical location. In other words, the first LMF and the first GMLC are in the same group of network elements serving the same device or the same enterprise device. The FQDN of the first LMF corresponds to the FQDN of the first GMLC. In other words, the FQDN of the first GMLC corresponding to the FQDN of the first LMF may be determined based on the FQDN of the first LMF, or the FQDN of the first LMF corresponding to the FQDN of the first GMLC may be determined based on the FQDN of the first GMLC.

[0240] The identifier of the GMLC requesting location information is information that uniquely identifies the GMLC to which the terminal device belongs. In other words, the enterprise can define whether two GMLCs belong to the same device based on the identifier. The identifier of the GMLC requesting location information may be the network element instance identifier of the GMLC to which the terminal device belongs, may be the host name of the GMLC to which the terminal device belongs, may be the FQDN of the GMLC to which the terminal device belongs, etc. This is not limited.

[0241] The authentication information is used to determine whether a positioning request from a GMLC requesting location information is authorized. It should be understood that any GMLC can generate a dedicated authentication information. The authentication information may be generated by the GMLC using an encryption key and encryption algorithm, may be generated by the GMLC using an integrity protection algorithm and integrity protection key, or may be generated by the GMLC using a specified integrity protection algorithm, a specified encryption algorithm, and a specified key. This is not limited.

[0242] It should be understood that the authentication information may be replaced by other names, such as check information. If the function and content of the information are the same or equivalent to the service discovery function selection information, they fall within the scope of protection of this application. This is not limited.

[0243] Furthermore, after receiving the positioning request, the AMF determines the address of the first LMF corresponding to the GMLC requesting the location information, and requests the location information from the first LMF. The method procedure shown in FIG. 4 further includes the following steps.

[0244] S402: The AMF obtains the address of the first LMF corresponding to the GMLC requesting location information.

[0245] Optionally, if the information about the first LMF includes the FQDN of the first LMF or the hostname of the first LMF, the AMF requests the DNS to query the address of the first LMF.

[0246] Optionally, if the information about the first LMF includes the address of the first LMF, the AMF obtains the address of the first LMF directly.

[0247] In addition, the AMF requests the first LMF to obtain location information. The method procedure shown in Figure 4 further includes the following steps.

[0248] S403: The AMF sends first positioning request information to the first LMF.

[0249] In response, the first LMF receives first positioning request information from the AMF.

[0250] It should be understood that the AMF sends the first positioning request information to the first LMF based on the address of the first LMF.

[0251] The first positioning request information includes an identifier of the GMLC requesting location information and authentication information.

[0252] In addition, the first LMF determines whether to allow a positioning request from a GMLC requesting location information. The method procedure shown in FIG.

[0253] S404: The first LMF determines whether to allow a positioning request from a GMLC requesting location information.

[0254] In a possible embodiment, the first LMF determines whether to allow a positioning request from a GMLC requesting location information based on the authentication information. Specifically, the first LMF and the first GMLC store the same encryption algorithm, integrity protection algorithm, encryption key, and integrity protection key, and the first LMF performs a validity check on the authentication information.

[0255] In a possible embodiment, the first LMF and the first GMLC belong to the same device, and the first LMF requests the first GMLC, via an internal interface, to check the authentication information.

[0256] In a possible embodiment, the first LMF sends authentication information to the first GMLC, and the first GMLC determines whether to allow a positioning request from the GMLC requesting location information based on the authentication information, and feeds back the authentication result to the first LMF.

[0257] S405 is optional. S405: The first LMF sends the authentication information to the first GMLC.

[0258] The first LMF obtains the address of the first GMLC based on the identifier of the first LMF, and sends authentication information to the first GMLC.

[0259] S406 is optional. S406: The first GMLC decides the authentication result.

[0260] The first GMLC determines an authentication result based on the authentication information.

[0261] Specifically, if the authentication information is valid or is authentication information generated by the first GMLC, the first GMLC determines that the authentication result is that the positioning request from the GMLC requesting the position information is authorized. If the authentication information is invalid or is not authentication information generated by the first GMLC, the first GMLC determines that the authentication result is that the positioning request from the GMLC requesting the position information is not authorized.

[0262] S407 is optional. S407: The first GMLC sends the authentication result to the first LMF.

[0263] It should be understood that after determining the authentication result, the first GMLC feeds back the authentication result to the first LMF.

[0264] Furthermore, if the first LMF accepts a positioning request from the GMLC requesting the location information, the first LMF determines the location information. The method procedure shown in FIG.

[0265] S408 is optional. S408: The first LMF determines the location information.

[0266] The location information indicates the location of the terminal device that initiated the positioning request, and the location information may be information such as longitude, latitude, or altitude, but is not limited thereto.

[0267] In addition, the determination result of whether the positioning request is allowed is fed back to the AMF. The method procedure shown in Figure 4 further includes the following steps.

[0268] S409: The first LMF sends the first positioning request response information to the AMF.

[0269] In response, the AMF receives first positioning request response information from the first LMF.

[0270] The first positioning request response information is used to inform the AMF whether the positioning request for the terminal device is allowed.

[0271] S410 is optional. S410: The AMF obtains location information.

[0272] Optionally, when the first positioning request response information is used to notify the AMF that the positioning request for the terminal device is allowed, it should be understood that the first positioning request response information includes location information and the AMF obtains the location information.

[0273] In addition, the AMF feeds back the determination result of whether the positioning request is allowed to the GMLC requesting the location information. The method procedure shown in Figure 3 further includes the following steps.

[0274] S411 is optional. S411: The AMF sends the location information to the GMLC requesting the location information.

[0275] It should be understood that after the AMF obtains the location information, the AMF sends the location information to the GMLC requesting the location information.

[0276] Based on the solution, when sending a positioning request, the GMLC requesting the location information carries the GMLC's dedicated authentication information and the address of the corresponding LMF. In this way, the GMLC requesting the location information can directly specify the LMF used by the AMF. Furthermore, the authentication procedure between the LMF and the GMLC is performed to ensure that the enterprise device is used by a non-enterprise user, and the security of the device information is improved.

[0277] 2 to 4 mainly describe the information that information about the first LMF and the first GMLC serving the terminal device is carried in the subscription data during the user's registration, so that the AMF can obtain the LMF and the GMLC belonging to the same device or the same enterprise device in the subsequent procedure of searching for the LMF. In addition, to ensure the security of the device information, an authentication procedure between the LMF and the GMLC is added to further avoid positioning requests for other devices. FIG. 5 mainly describes the information that the policy data information in the registration process of the terminal device carries information about the first LMF and the first GMLC serving the terminal device, so that the AMF can obtain the LMF and the GMLC belonging to the same device or the same enterprise device in the subsequent procedure of searching for the LMF. The following provides a detailed description with reference to FIG. 5.

[0278] 5 is a schematic diagram of a communication method 500 according to an embodiment of the present application. The method 500 may include the following steps.

[0279] S501: A policy control function (PCF) sends policy data information to a terminal device.

[0280] In response, the UE receives policy data information from the PCF.

[0281] It should be understood that the PCF sends the policy data information to the AMF, and the AMF forwards the policy data information to the UE.

[0282] The policy data information includes information about the first LMF, and the information about the first LMF includes an identifier of the first LMF, such as, but not limited to, a network element instance identifier of the first LMF or a host name of the first LMF.

[0283] Optionally, the information about the first LMF may further include an identifier of the first GMLC, an address of the first LMF, an FQDN of the first LMF, etc. This is not limited. The identifier of the first GMLC may be a network element instance identifier of the first GMLC, a hostname of the first LMF, etc. This is not limited.

[0284] It should be understood that the first LMF and the first GMLC belong to the same device or the same enterprise device. In other words, the first LMF and the first GMLC are deployed at the same physical location. In other words, the first LMF and the first GMLC are in the same group of network elements serving the same device or the same enterprise device. The identifier of the first LMF corresponds to the identifier of the first GMLC. In other words, the identifier of the first GMLC corresponding to the identifier of the first LMF may be determined based on the identifier of the first LMF, or the identifier of the first LMF corresponding to the identifier of the first GMLC may be determined based on the identifier of the first GMLC.

[0285] In addition, after triggering the positioning request, the terminal device requests the AMF to obtain location information. The method procedure shown in Figure 5 further includes the following steps.

[0286] S502: The UE sends second positioning request information to the AMF.

[0287] In response, the AMF receives a positioning request from the UE.

[0288] It should be understood that after the terminal device initiates the emergency registration procedure or the emergency PDU session establishment procedure, the terminal device sends second positioning request information to the AMF to request to obtain location information of the terminal device. The location information may be information such as longitude, latitude, altitude, etc. This is not limited.

[0289] The second positioning request information includes information regarding the first LMF.

[0290] It should be understood that the second positioning request information may alternatively be replaced with other names, such as emergency registration request information or emergency PDU session establishment request information. If the function and content of the information are the same or equal to the service discovery function selection information, they fall within the protection scope of this application. This is not limited.

[0291] Furthermore, after receiving the positioning request, the AMF determines an address of the first LMF deployed in the terminal device to request location information from the first LMF. The method procedure shown in FIG. 5 further includes the following steps.

[0292] S503: The AMF obtains the address of the first LMF.

[0293] It should be understood that the AMF queries the NRF or DNS based on information about the first LMF to obtain the address of the first LMF.

[0294] In addition, the AMF requests the first LMF to obtain location information. The method procedure shown in Figure 5 further includes the following steps.

[0295] S504: The AMF sends third positioning request information to the first LMF.

[0296] In response to this, the first LMF receives third positioning request information from the AMF.

[0297] It should be understood that the AMF sends the third positioning request information to the first LMF based on the address of the first LMF.

[0298] The second positioning request information includes an identifier of the first GMLC.

[0299] Furthermore, after receiving the positioning request, the first LMF determines whether the GMLC requesting the location information is deployed in the same manner as the first LMF. The method procedure shown in FIG. 5 further includes the following steps.

[0300] S505 is optional. S505: The first LMF determines an association relationship.

[0301] It should be understood that after receiving the third positioning request information from the AMF, the first LMF determines an association relationship based on the identifier of the GMLC requesting the location information in the third positioning request information. The association relationship indicates whether the first LMF and the first GMLC belong to the same device or the same enterprise device.

[0302] The process of S505 is the same as S305, and to avoid repetition, detailed description will be omitted in this specification.

[0303] S506: The first LMF determines whether to allow a positioning request for the terminal device.

[0304] The process of S506 is the same as S306, and to avoid repetition, detailed description will be omitted in this specification.

[0305] S507 is optional. S507: The first LMF determines the location information.

[0306] It should be understood that when the first LMF authorizes a positioning request for the terminal device, the first LMF determines location information. The location information indicates the location of the terminal device that initiated the positioning request. The location information may be information such as longitude, latitude, and altitude. This is not limited.

[0307] In addition, the determination result of whether the positioning request is allowed is fed back to the AMF. The method procedure shown in Figure 3 further includes the following steps.

[0308] S508: The first LMF sends third positioning request response information to the AMF.

[0309] In response, the AMF receives third positioning request response information from the first LMF.

[0310] The second positioning request response information is used to inform the AMF whether the positioning request for the terminal device is allowed.

[0311] S509 is optional. S509: The AMF obtains location information.

[0312] Optionally, when the third positioning request response information is used to notify the AMF that the positioning request for the terminal device is allowed, it should be understood that the second positioning request response information includes location information and the AMF obtains the location information.

[0313] S510 is optional. S510: The AMF sends the location information to the first GMLC.

[0314] It should be understood that after obtaining the location information, the AMF requests the NRF or DNS to query the address of the first GMLC based on the policy data information, and the AMF sends the location information to the first GMLC.

[0315] Based on this solution, information about the first LMF and the first GMLC serving the terminal device is carried in the policy data information in the registration process of the terminal device, so that the AMF can obtain the LMF and the GMLC belonging to the same device or the same enterprise device in a subsequent procedure of searching for the LMF. In addition, the first LMF determines whether the first LMF and the GMLC belonging to the terminal device belong to the same device or the same enterprise device, so as to further avoid positioning requests for other devices to ensure device security.

[0316] It can be understood that the examples in Figures 2 to 5 in the embodiments of this application are merely intended to help those skilled in the art understand the embodiments of this application, and are not intended to limit the embodiments of this application to specific scenarios in the examples. Of course, those skilled in the art can make various equivalent modifications or changes based on the examples shown in Figures 2 to 5, and such modifications or changes also fall within the scope of the embodiments of this application.

[0317] It may be further understood that in some scenarios, some optional features in the embodiments of this application may be independent of other features or may be combined with other features in some scenarios. This is not limited.

[0318] It can be further understood that the solutions in the embodiments of this application may be appropriately combined for use, and the explanations or descriptions of terms in the embodiments may be mutually referenced or explained in the embodiments. This is not limited.

[0319] It can be understood that the sequence numbers in the embodiments of this application do not imply an execution order, but are merely used to distinguish for ease of description, and should not be construed as any limitation on the implementation process of the embodiments of this application.

[0320] It can be further understood that some message names, such as the first positioning request information or the location information, are included in the embodiments of this application. It should be understood that these names do not constitute limitations on the scope of protection of the embodiments of this application.

[0321] It may be further understood that in the above method embodiments, the methods and operations performed by the terminal device may alternatively be performed by components (e.g., chips or circuits) of the terminal device. In addition, the methods and operations performed by the network device may be performed by components (e.g., chips or circuits) of the network device. This is not limited. Corresponding to the methods provided in the above method embodiments, an embodiment of this application further provides a corresponding apparatus. The apparatus includes corresponding modules configured to perform the above method embodiments. The modules may be software, hardware, or a combination of software and hardware. It may be understood that the technical features described in the method embodiments are also applicable to the following apparatus embodiments.

[0322] It should be understood that the first LMF, AMF, or terminal device may perform some or all of the steps of the above-mentioned embodiments. These steps or operations are merely examples. Other operations or variations of various operations may also be performed in this embodiment of the application. Furthermore, steps may be performed in a different order than presented in the above-mentioned embodiments, and all operations of the above-mentioned embodiments may not need to be performed.

[0323] Above, the communication method provided in the embodiment of this application has been described in detail with reference to Figs. 2 to 5. Hereinafter, the communication device provided in the embodiment of this application will be described in detail with reference to Figs. 6 to 8. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for contents that are not described in detail, please refer to the above-mentioned method embodiment. For the sake of brevity, some contents will not be described again.

[0324] 6 is a schematic block diagram of a communication device according to an embodiment of this application. The device 600 includes a transceiver unit 610. The transceiver unit 610 may be configured to implement a corresponding communication function. The transceiver unit 610 may be referred to as a communication interface or a communication unit.

[0325] Optionally, the apparatus 600 may further include a processing unit 620. The processing unit 620 may be configured to perform data processing.

[0326] Optionally, the apparatus 600 further comprises a storage unit. The storage unit may be configured to store instructions and / or data. The processing unit 620 can read the instructions and / or data in the storage unit, so that the apparatus performs the operations of different terminal devices in the above method embodiments, such as the first LMF, the first GMLC, the AMF, or the terminal device.

[0327] The apparatus 600 may be configured to perform operations performed by the first LMF, the first GMLC, the AMF, or the terminal device in the aforementioned method embodiments. In this case, the apparatus 600 may be a component of the first LMF, the first GMLC, the AMF, or the terminal device, or the first LMF, the first GMLC, the AMF, or the terminal device. The transceiver unit 610 is configured to perform reception / transmission related operations of the first LMF, the first GMLC, the AMF, or the terminal device in the aforementioned method embodiments. The processing unit 720 is configured to perform processing related operations of the first LMF, the first GMLC, the AMF, or the terminal device in the aforementioned method embodiments.

[0328] It should be further understood that the apparatus 600 herein is embodied in the form of a functional unit. The term "unit" here may be an application-specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor) configured to execute one or more software or firmware programs, a memory, a combinatorial logic circuit, and / or other suitable components supporting the described functions. In an optional example, a person skilled in the art can understand that the apparatus 600 may be specifically the first LMF, the first GMLC, the AMF, or a terminal device of the aforementioned embodiment, and may be configured to execute procedures and / or steps corresponding to the first LMF, the first GMLC, the AMF, or a terminal device of the aforementioned method embodiment. Alternatively, the apparatus 600 may be specifically the first LMF, the first GMLC, the AMF, or a terminal device of the aforementioned embodiment, and may be configured to execute procedures and / or steps corresponding to the first LMF, the first GMLC, the AMF, or a terminal device of the aforementioned method embodiment. To avoid repetition, the details will not be described again here.

[0329] The device 600 in the above solution has a function of implementing the corresponding steps performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above method. Alternatively, the device 600 in the above solution has a function of implementing the corresponding steps performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above method. This function may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the transceiver unit may be replaced with a transceiver (e.g., the transmitting unit in the transceiver unit may be replaced with a transmitter, and the receiving unit in the transceiver unit may be replaced with a receiver), and other units such as a processing unit may be replaced with a processor, and the transmitting / receiving operations and related processing operations in the method embodiment are performed separately.

[0330] Also, the transceiver unit 610 may be a transceiver circuit (eg, which may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

[0331] It should be noted that the device in Fig. 6 may be a network element or device in the above-mentioned embodiment, or may be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface. The processing unit is a processor, a microprocessor, or an integrated circuit integrated on a chip. This is not limited here.

[0332] As shown in Fig. 7, an embodiment of this application provides another communication device 700. The device 700 includes a processor 710. The processor 710 is coupled to a memory 720. The memory 720 is configured to store computer programs or instructions and / or data. The processor 710 is configured to execute computer programs or instructions stored in the memory 720 or read data stored in the memory 720 to perform the methods in the aforementioned method embodiments.

[0333] Optionally, there is one or more processors 710 .

[0334] Optionally, one or more memories 720 are present.

[0335] Optionally, memory 720 and processor 710 are integrated together or located separately.

[0336] Optionally, as shown in Figure 7, the apparatus 700 further includes a transceiver 730, the transceiver 730 configured to receive and / or transmit signals. For example, the processor 710 is configured to control the transceiver 730 to receive and / or transmit signals.

[0337] In the solution, the apparatus 700 is configured to perform the operations performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above method embodiments.

[0338] For example, the processor 710 is configured to execute computer programs or instructions stored in the memory 720 to perform relevant operations of the method of a first control plane device in the aforementioned method embodiments, such as a first LMF in any one of the embodiments shown in Figures 2 to 5, or a first LMF in any one of the embodiments shown in Figures 2 to 5.

[0339] It should be understood that the processors described in the embodiments herein may be a central processing unit (CPU) or other general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0340] It should be further understood that the memory referred to in the embodiments of this application may be a volatile memory and / or a non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, the RAM may be used as an external cache. By way of example and not limitation, RAM may include several forms such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchlink dynamic random access memory (synchlink DRAM, SLDRAM), and direct rambus random access memory (direct rambus RAM, DR RAM).

[0341] It should be noted that if the processor is a general-purpose processor, a DSP, ASIC, FPGA, other programmable logic device, discrete gate or transistor logic device, or discrete hardware components, memory (storage module) may be incorporated into the processor.

[0342] It should be further noted that memory as described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0343] 8, an embodiment of this application provides a chip system 800. The chip system 800 (which may also be referred to as a processing system) includes a logic circuit 810 and an input / output interface 820.

[0344] The logic circuit 810 may be a processing circuit in the chip system 800. The logic circuit 810 may be coupled to a storage unit and call instructions in the storage unit, so that the chip system 800 can implement the methods and functions in the embodiments of this application. The input / output interface 820 may be an input / output circuit in the chip system 800, and may output information processed by the chip system 800, or input data or signaling information to be processed to the chip system 800 for processing.

[0345] In the solution, the chip system 800 is configured to perform the operations performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above method embodiments.

[0346] For example, the logic circuitry 810 is configured to perform processing-related operations of the first LMF in the aforementioned method embodiments, such as processing-related operations of the first LMF in any one of the embodiments shown in Figures 2 to 5. The input / output interface 820 is configured to perform transmission and / or reception-related operations of the first LMF in the aforementioned method embodiments, such as transmission and / or reception-related operations performed by the first LMF in any one of the embodiments shown in Figures 2 to 5.

[0347] An embodiment of this application further provides a computer-readable storage medium, which stores computer instructions used to implement the method performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above-mentioned method embodiments.

[0348] For example, when the computer program is executed by a computer, the computer is enabled to perform the method performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above-mentioned method embodiments.

[0349] An embodiment of the present application further provides a computer program product including instructions, which, when executed by a computer, perform the method performed by the first LMF, the first GMLC, the AMF, or the terminal device in the above-mentioned method embodiments.

[0350] For the description and advantageous effects of any one of the related contents of the apparatuses provided above, please refer to the corresponding method embodiments provided above, and the details will not be described again here.

[0351] In some embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the described apparatus embodiment is merely an example. For example, the division into units is merely a logical division of functions, and may be other divisions in actual implementation. For example, multiple units or components may be combined or incorporated into other systems, or some features may be ignored or not implemented. In addition, the illustrated or described mutual couplings, direct couplings, or communication connections may be realized through some interfaces. Indirect couplings or communication connections between apparatuses or units may be implemented in electronic, mechanical, or other forms.

[0352] All or part of the above-mentioned embodiments may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement the embodiments, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of this application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer may be a personal computer, a server, a network device, etc. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired (e.g., coaxial cable, optical fiber, or digital subscriber line (DSL)) or wireless (e.g., infrared, radio frequency, microwave) manner. The computer-readable storage medium may be any available medium accessible by a computer, and may include a data storage device incorporating one or more available media, such as a server or a data center. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, or a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)). For example, the available medium may include, but is not limited to, any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0353] The above description is merely a specific embodiment of this application, and is not intended to limit the scope of protection of this application. Any variations or replacements that are easily conceived by those skilled in the art within the technical scope disclosed in this application shall be within the scope of protection of this application. Therefore, the scope of protection of this application shall be subject to the scope of protection of the claims. [Explanation of symbols]

[0354] 200 Communication Method 300 Communication Method 400 Communication Method 500 Communication Method 600 Communication Equipment 610 Transceiver Unit 620 Processing Unit 700 Communication Equipment 710 Processor 720 Memory 720 Processing Unit 730 Transceiver 800 Chip System 810 Logic Circuit 820 Input / Output Interface

Claims

1. receiving, by a first location management network element, first positioning request information from an access management network element, the first positioning request information including an identifier of a gateway mobile location center network element requesting location information, the location information being a location of a terminal device; determining by the first location management network element based on the identifier of the gateway mobile location center network element requesting the location information whether to allow a positioning request from the gateway mobile location center network element requesting the location information; sending, by the first location management network element, first positioning request response information to the access management network element, the first positioning request response information being used to inform the access management network element whether the positioning request for the terminal device is permitted; A communication method including:

2. determining whether to allow a positioning request from the gateway mobile location center network element requesting the location information by the first location management network element based on the identifier of the gateway mobile location center network element requesting the location information, determining, by the first location management network element, an association relationship based on the identifier of the gateway mobile location center network element requesting the location information; determining, by the first location management network element based on the association relationship, whether to allow the positioning request from the gateway mobile location center network element requesting the location information; The association relationship indicates whether the first location management network element and the gateway mobile location center network element requesting the location information belong to the same device or the same enterprise device. The method of claim 1.

3. The step of determining, by the first location management network element, an association relationship based on the identifier of the gateway mobile location center network element requesting the location information, comprises: determining, by the first location management network element, the association relationship based on an identifier of a first gateway mobile location center network element and the identifier of the gateway mobile location center network element requesting the location information; the first gateway mobile location center network element and the first location management network element belong to the same device or the same enterprise user; The method of claim 2.

4. determining whether to allow the positioning request from the gateway mobile location center network element requesting the location information by the first location management network element based on the association relationship, authorizing, by the first location management network element, the positioning request from the gateway mobile location center network element requesting the location information, if the association relationship is that the first location management network element and the gateway mobile location center network element requesting the location information belong to the same device or the same enterprise device; The method according to any one of claims 1 to 3, comprising:

5. determining, by the first location management network element, the location information; the first positioning request response information includes the location information; The method of claim 4.

6. determining whether to allow the positioning request from the gateway mobile location center network element requesting the location information by the first location management network element based on the association relationship, skipping, by the first location management network element, accepting the positioning request from the gateway mobile location center network element requesting the location information if the association relationship is that the first location management network element and the gateway mobile location center network element requesting the location information do not belong to the same device or the same enterprise device; The method according to any one of claims 1 to 3, comprising:

7. determining whether to allow a positioning request from the gateway mobile location center network element requesting the location information by the first location management network element based on the identifier of the gateway mobile location center network element requesting the location information, sending authentication information by the first location management network element to a first gateway mobile location center network element; receiving, by the first location management network element, an authentication result from the first gateway mobile location center network element; determining, by the first location management network element based on the authentication result, whether the gateway mobile location center network element requesting the location information should be allowed to perform positioning; The first gateway mobile location center network element and the first location management network element belong to the same device or the same enterprise device, and the first positioning request information further includes the authentication information, and the authentication information is used to determine whether to allow the positioning request from the gateway mobile location center network element requesting the location information. The method of claim 1.

8. determining whether to allow a positioning request from the gateway mobile location center network element requesting the location information by the first location management network element based on the identifier of the gateway mobile location center network element requesting the location information, determining, by the first location management network element based on authentication information, whether to allow the positioning request from the gateway mobile location center network element requesting the location information; 2. The method of claim 1, comprising:

9. When the first positioning request response information is used to inform that the positioning request for the terminal device is allowed, the method further comprises: determining, by the first location management network element, the location information; the first positioning request response information includes the location information; The method according to claim 7 or 8.

10. receiving, by an access management network element, a positioning request from a gateway mobile location center network element requesting location information, the location information being a location of a terminal device; obtaining, by the access management network element, an address of a first location management network element corresponding to the gateway mobile location center network element requesting the location information; sending, by the access management network element, first positioning request information to the first location management network element, the first positioning request information including an identifier of the gateway mobile location center network element requesting the location information; receiving, by the access management network element, first positioning request response information from the first location management network element, the first positioning request response information being used to inform whether the positioning request for the terminal device is permitted; A communication method including:

11. The step of obtaining, by the access management network element, an address of a first location management network element corresponding to the gateway mobile location center network element requesting the location information, comprises: obtaining, by the access management network element, registration subscription information; obtaining, by the access management network element, the address of the first location management network element based on the registration subscription information; the registration subscription information includes the address of the first location management network element or an identifier of the first location management network element; The method of claim 10.

12. If the subscription registration information includes the identifier of the first location management network element, the method further comprises: obtaining, by the access management network element, the address of the first location management network element based on the identifier of the first location management network element; The method of claim 11 , further comprising:

13. The step of obtaining, by the access management network element, an address of a first location management network element corresponding to the gateway mobile location center network element requesting the location information, comprises: receiving, by the access management network element, information from the gateway mobile location center network element requesting the location information; and obtaining, by the access management network element, the address of the first location management network element based on the information from the gateway mobile location center network element requesting the location information; the information from the gateway mobile location center network element requesting the location information includes the address of the first location management network element or an identifier of the first location management network element; The method of claim 10.

14. If the information from the gateway mobile location center network element requesting the location information includes the identifier of the first location management network element, the method further comprises: obtaining, by the access management network element, the address of the first location management network element based on the identifier of the first location management network element; The method of claim 13, further comprising:

15. 15. The method of claim 13 or 14, wherein the information from the gateway mobile location center network element requesting the location information further comprises the identifier and authentication information of the gateway mobile location center network element requesting the location information, and the authentication information is used to determine whether the positioning request from the gateway mobile location center network element requesting the location information should be allowed.

16. The method of claim 15 , wherein the first positioning request information further includes the authentication information.

17. The method of claim 10, wherein, when the first positioning request response information is used to notify that the positioning request for the terminal device is permitted, the first positioning request response information includes the location information.

18. obtaining, by the access management network element based on the identifier of the gateway mobile location center network element requesting the location information, an address of the gateway mobile location center network element requesting the location information; transmitting, by the access management network element, the location information to the gateway mobile location center network element that requests the location information; 20. The method of claim 17, further comprising:

19. receiving, by a first gateway mobile location center network element, an authentication request from a first location management network element, the authentication request including authentication information; determining, by the first gateway mobile location center network element, an authentication result based on the authentication information, the authentication result indicating whether a positioning request from a gateway mobile location center network element requesting location information is permitted; sending, by the first gateway mobile location center network element, the authentication result to the first location management network element; the first gateway mobile location center network element and the first location management network element belong to the same device or the same enterprise device, and the authentication information is used to determine whether to allow the positioning request from the gateway mobile location center network element requesting the location information; Communication methods.

20. If the authentication information is valid or the authentication information is generated by the first gateway mobile location center network element, the step of determining an authentication result based on the authentication information by the first gateway mobile location center network element includes: determining, by the first gateway mobile location center network element, that the authentication result is that the positioning request from the gateway mobile location center network element requesting location information is authorized; 20. The method of claim 19, comprising:

21. If the authentication information is invalid or is not the authentication information generated by the first gateway mobile location center network element, the step of determining an authentication result based on the authentication information by the first gateway mobile location center network element includes: determining, by the first gateway mobile location center network element, that the authentication result is that the positioning request from the gateway mobile location center network element requesting location information is not authorized; 20. The method of claim 19, comprising:

22. receiving, by an access management network element, second positioning request information from a terminal device, the second positioning request information being used to obtain location information of the terminal device; obtaining, by the access management network element, an address of a first location management network element; sending third positioning request information by the access management network element to the first location management network element, the third positioning request information being used to request to obtain the location information, the location information being a location of the terminal device, and the third positioning request information including an identifier of a first gateway mobile location center network element; receiving, by the access management network element, third positioning request response information from the first location management network element, the third positioning request response information indicating whether a positioning request for the terminal device is permitted; The first gateway mobile location center network element and the first location management network element belong to the same device or the same enterprise device, and the second positioning request information includes policy data information, and the policy data information includes the identifier of the first gateway mobile location center network element; Communication methods.

23. The step of obtaining an address of a first location management network element by the access management network element includes: obtaining, by the access management network element, the address of the first location management network element based on the policy data information; the policy data information further includes information about the first location management network element and information about the first gateway mobile location center network element; 23. The method of claim 22.

24. If the policy data information includes an identifier of the first location management network element, the method further comprises: obtaining, by the access management network element, the address of the first location management network element based on the identifier of the first location management network element; 24. The method of claim 23, further comprising:

25. The method of claim 22, wherein when the third positioning request response information is used to notify that the positioning request for the terminal device is allowed, the third positioning request response information includes the location information.

26. obtaining, by the access management network element, an address of the first gateway mobile location center network element based on the identifier of the first gateway mobile location center network element; transmitting, by the access management network element, the location information to the first gateway mobile location center network element; 26. The method of claim 25, further comprising:

27. receiving, by a terminal device, policy data information from a policy control network element, the policy data information including information about a first location management network element and a first gateway mobile location center network element belonging to the terminal device; sending, by the terminal device, second positioning request information to an access management network element, the second positioning request information being used to obtain location information of the terminal device, the location information being a location of the terminal device; The first gateway mobile location center network element and the first location management network element belong to the same device or the same enterprise device, and the second positioning request information includes the policy data information; Communication methods.

28. 1. A communication device, comprising: A communications device comprising a processor configured to execute a computer program stored in a memory so as to enable the communications device to carry out a method according to any one of claims 1 to 27.

29. 28. A computer readable storage medium having stored thereon a computer program or instructions which, when executed by a processor, perform the method of any one of claims 1 to 27.

30. A computer program product comprising instructions, when said computer program product is executed on a computer, to perform the method of any one of claims 1 to 27.

31. A chip system comprising a processor configured to retrieve computer programs or instructions from a memory and execute the computer programs or instructions so as to enable a communication device in which the chip system is embedded to perform the method of any one of claims 1 to 27.

Images