Session processing method and device

Abstract

The invention provides a session processing method and device, and relates to the technical field of communication. The method comprises the following steps: an LMF network element indicates a terminal device to cancel an LCS session through an AMF network element, and then the terminal device feeds back a result of cancelling the LCS session to the LMF network element through the AMF network element. The invention provides a solution for cancelling the LCS session so as to meet the requirement of cancelling the current LCS session under the conditions of network switching of the terminal equipment and the like.

Description

Session processing method and device Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a session processing method and device. Background Art

[0002] An application function (AF) or a location service client (LCS client) can trigger a location service (LCS) session. Alternatively, an LCS session can be triggered by a terminal device. The LCS session can be used to estimate the location of the terminal device and obtain an estimated location result for the terminal device.

[0003] Summary of the Invention

[0004] The present disclosure proposes a session processing method and apparatus, and provides a solution for canceling an LCS session.

[0005] An embodiment of a first aspect of the present disclosure provides a session processing method, which can be executed by a first network element. The method includes: sending first information to a second network element, where the first information is used to instruct a terminal device to cancel an LCS session.

[0006] In some embodiments of the present disclosure, the first information includes a request to cancel positioning.

[0007] In some embodiments of the present disclosure, the location cancellation request carries at least one of the following:

[0008] The address information of the Gateway Mobile Location Center (GMLC);

[0009] Reason for canceling positioning;

[0010] Identification information of the first network element.

[0011] In some embodiments of the present disclosure, after sending the first information to the second network element, the method further includes: receiving second information sent by the second network element, where the second information is used to determine the result of the terminal device canceling the LCS session.

[0012] In some embodiments of the present disclosure, the second information includes a positioning cancellation response.

[0013] In some embodiments of the present disclosure, the location cancellation response carries one of the following:

[0014] LCS session cancellation success information;

[0015] LCS session cancellation failure information;

[0016] LCS session cancellation failure information and corresponding failure reason information.

[0017] In some embodiments of the present disclosure, the method further includes:

[0018] Release local resource information corresponding to the LCS session.

[0019] A second aspect of the present disclosure provides a session processing method that can be executed by a second network element. The method includes: receiving first information sent by a first network element, where the first information is used to instruct a terminal device to cancel an LCS session.

[0020] In some embodiments of the present disclosure, the first information includes a request to cancel positioning.

[0021] In some embodiments of the present disclosure, the location cancellation request carries at least one of the following:

[0022] GMLC's address information;

[0023] Reason for canceling positioning;

[0024] Identification information of the first network element.

[0025] In some embodiments of the present disclosure, after receiving the first information sent by the first network element, the method further includes: sending third information to the terminal device based on the first information, and the third information is used to indicate the cancellation of the LCS session.

[0026] In some embodiments of the present disclosure, the third information includes: a downlink non-access stratum transport (DL NAS TRANSPORT) message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

[0027] In some embodiments of the present disclosure, after sending third information to the terminal device based on the first information, the method further includes: receiving fourth information sent by the terminal device, the fourth information being used to determine the result of the terminal device canceling the LCS session.

[0028] In some embodiments of the present disclosure, the fourth information includes: an uplink non-access stratum transport (UL NAS TRANSPORT) message, wherein the cancel positioning response is included in a location service message container of the UL NAS TRANSPORT message.

[0029] In some embodiments of the present disclosure, after receiving the fourth information sent by the terminal device, the method further includes: sending second information to the first network element based on the fourth information, and the second information is used to determine the result of the terminal device canceling the LCS session.

[0030] In some embodiments of the present disclosure, the second information includes a positioning cancellation response.

[0031] In some embodiments of the present disclosure, the location cancellation response carries one of the following:

[0032] LCS session cancellation success information;

[0033] LCS session cancellation failure information;

[0034] LCS session cancellation failure information and corresponding failure reason information.

[0035] In some embodiments of the present disclosure, the method further includes: determining that the cancellation of the LCS session is complete, and releasing local resource information corresponding to the LCS session.

[0036] An embodiment of a third aspect of the present disclosure provides a session processing method that can be executed by a terminal device. The method includes: receiving third information sent by a second network element, where the third information is used to instruct the terminal device to cancel the LCS session.

[0037] In some embodiments of the present disclosure, the third information includes: a DL NAS TRANSPORT message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

[0038] In some embodiments of the present disclosure, the location cancellation request carries at least one of the following:

[0039] GMLC's address information;

[0040] Reason for canceling positioning;

[0041] Identification information of the first network element.

[0042] In some embodiments of the present disclosure, after receiving the third information sent by the second network element, the method further includes: sending fourth information to the second network element based on the third information, and the fourth information is used to determine the result of the terminal device canceling the LCS session.

[0043] In some embodiments of the present disclosure, the fourth information includes: a UL NAS TRANSPORT message, wherein the cancel positioning response is included in a location service message container of the UL NAS TRANSPORT message.

[0044] In some embodiments of the present disclosure, the location cancellation response carries one of the following:

[0045] LCS session cancellation success information;

[0046] LCS session cancellation failure information;

[0047] LCS session cancellation failure information and corresponding failure reason information.

[0048] In some embodiments of the present disclosure, after receiving the third information sent by the second network element, the method further includes: releasing local resource information corresponding to the LCS session.

[0049] An embodiment of the fourth aspect of the present disclosure provides a session processing method, the method comprising: an LMF network element sends first information to an AMF network element, the first information being used to instruct a terminal device to cancel an LCS session; the AMF network element sends third information to the terminal device based on the first information; the AMF network element receives fourth information sent by the terminal device based on the third information; and sends second information to the LMF network element based on the fourth information, the second information being used to determine the result of the terminal device canceling the LCS session.

[0050] An embodiment of the fifth aspect of the present disclosure provides a session processing method, the method comprising: a network device sends third information to a terminal device, the third information being used to instruct the terminal device to cancel an LCS session; the network device receives fourth information sent by the terminal device, the fourth information being used to determine a result of the terminal device canceling the LCS session.

[0051] An embodiment of the sixth aspect of the present disclosure provides a first network element, including: a first communication module, configured to send first information to a second network element, wherein the first information is used to instruct a terminal device to cancel an LCS session.

[0052] An embodiment of the seventh aspect of the present disclosure provides a second network element, including: a second communication module, configured to receive first information sent by a first network element, wherein the first information is used to instruct a terminal device to cancel an LCS session.

[0053] An eighth aspect embodiment of the present disclosure provides a terminal device, including: a third communication module, configured to receive third information sent by a second network element, wherein the third information is used to instruct the terminal device to cancel the LCS session.

[0054] An embodiment of the ninth aspect of the present disclosure provides a network device, including: a fourth communication module, configured to send third information to a terminal device, wherein the third information is used to instruct the terminal device to cancel an LCS session; and receive fourth information sent by the terminal device, wherein the fourth information is used to determine a result of the terminal device canceling the LCS session.

[0055] The tenth aspect embodiment of the present disclosure provides a communication processing system, including: a network device and a terminal device; the network device executes the method as described in the first aspect embodiment or the method as described in the second aspect embodiment, and the terminal device executes the method as described in the third aspect embodiment.

[0056] An eleventh embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method as described in the first embodiment, or the method as described in the second embodiment, or the method as described in the third embodiment, or the method as described in the fourth embodiment, or the method as described in the fifth embodiment.

[0057] The twelfth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, they can implement the method as described in the first aspect embodiment, or the method as described in the second aspect embodiment, or the method as described in the third aspect embodiment, or the method as described in the fourth aspect embodiment, or the method as described in the fifth aspect embodiment.

[0058] The disclosed embodiments provide a session processing method and apparatus. An LMF network element can instruct a terminal device to cancel an LCS session via an AMF network element. The terminal device then provides feedback on the LMF network element's cancellation result via the AMF network element. By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided, meeting the need to cancel the current LCS session in situations such as a network handover of the terminal device.

[0059] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0061] FIG1 is a schematic diagram of the architecture of a communication processing system according to an embodiment of the present disclosure;

[0062] FIG2 is a timing diagram of a session processing method according to an embodiment of the present disclosure;

[0063] FIG3 is a flow chart of a session processing method according to an embodiment of the present disclosure;

[0064] FIG4 is a flow chart of a session processing method according to an embodiment of the present disclosure;

[0065] FIG5 is a flow chart of a session processing method according to an embodiment of the present disclosure;

[0066] FIG6 is a flow chart of a session processing method according to an embodiment of the present disclosure;

[0067] FIG7 is a timing diagram of an example according to an embodiment of the present disclosure;

[0068] FIG8 is a structural block diagram of a first network element according to an embodiment of the present disclosure;

[0069] FIG9 is a structural block diagram of a second network element according to an embodiment of the present disclosure;

[0070] FIG10 is a structural block diagram of a terminal device according to an embodiment of the present disclosure;

[0071] FIG11 is a structural block diagram of a network device according to an embodiment of the present disclosure;

[0072] FIG12 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

[0073] FIG13 is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0074] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure and are not to be construed as limiting the present disclosure. It should be noted that the embodiments of the present disclosure and the features in the embodiments may be combined with each other unless there is a conflict.

[0075] The present disclosure provides a session processing method. In some embodiments, the terms session processing method, communication processing method, information processing method, and communication method are interchangeable; the terms session processing device, information processing device, and communication device are interchangeable; and the terms communication processing system, information processing system, and communication system are interchangeable.

[0076] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0077] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0078] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0079] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0080] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0081] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0082] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0083] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0084] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0085] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0086] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0087] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0088] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0089] In some embodiments, "obtain", "get", "obtain", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from a protocol, obtaining by self-processing, autonomous implementation, etc.

[0090] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0091] In some embodiments, "predetermined" and "preset" can be interpreted as pre-specified in a protocol, etc., or can be interpreted as a pre-set action performed by a device, etc.

[0092] In some embodiments, determining may be interpreted as judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, “assuming,” “expecting,” “considering,” broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but is not limited thereto.

[0093] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0094] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0095] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0096] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0097] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0098] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0099] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0100] In some embodiments, the threshold mentioned in this embodiment may be a numerical value, a constant, or some fixed value.

[0101] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0102] An application function (AF) or a location service client (LCS client) can trigger a location service (LCS) session. For example, in the 5G core network (5GC), this process may correspond to the 5GC-MT-LR process. In addition, the LCS session may also be triggered by a terminal device. For example, in 5GC, this process may correspond to the 5GC-MO-LR process. The LCS session may be used for position estimation of the terminal device, such as an LCS session for real-time positioning may be used for real-time positioning estimation of the terminal device. When the network of the terminal device switches, such as when the 5G network switches to the 4G network, the terminal device will not be able to interact with the network elements in the 5G core network. Therefore, it is necessary to cancel the LCS session established in the 5G network. However, there is currently no effective solution.

[0103] To this end, this embodiment proposes a session processing method and apparatus, and provides a solution for canceling an LCS session to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0104] The session processing method and apparatus provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0105] FIG1 shows a structural diagram of a communication processing system according to an embodiment of the present disclosure. As shown in FIG1 , the system architecture of the communication processing system 100 may include a terminal device 101 and a network device 102 .

[0106] In some embodiments, the terminal device 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0107] In some embodiments, the network device 102 may be a core network device. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0108] In some embodiments, the network device 102 may be a single device including a first network element 1021, a second network element 1022, etc., or may be a plurality of devices or a device group including all or part of the first network element 1021, the second network element 1022, etc. The network element may be virtual or physical.

[0109] In some embodiments, the first network element 1021 is, for example, a location management function (LMF) network element.

[0110] In some embodiments, the first network element 1021 may be used for location positioning management of terminal devices, and the name is not limited thereto.

[0111] In some embodiments, the second network element 1022 is, for example, an access and mobility management function (AMF) network element.

[0112] In some embodiments, the second network element 1022 may be used to provide transmission for location service messages between the terminal device and the first network element 1021 , and the name is not limited thereto.

[0113] In some embodiments, the system architecture of the communication processing system 100 may further include a network device 103 .

[0114] In some embodiments, network device 103 may be separate from network device 102 , or network device 103 may be part of network device 102 .

[0115] In some embodiments, the network device 103 may be an AF or LCS client external to the network device 102 .

[0116] It can be understood that the communication processing system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0117] The following embodiments of the present disclosure may be applied to the communication processing system shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication processing system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, whether direct or indirect, and wired or wireless.

[0118] The embodiments of the present disclosure can be applied to satellite communications, Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5GNR, Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0119] Furthermore, to illustrate the specific execution process of the above-mentioned communication processing system, FIG2 shows a timing diagram of a session processing method according to an embodiment of the present disclosure. The method is applied to the above-mentioned communication processing system, as shown in FIG2, and may include the following steps:

[0120] Step 201: A first network element sends first information to a second network element.

[0121] In some embodiments, the second network element receives the first information sent by the first network element.

[0122] In some embodiments, the first information may be a type of communication information, such as an indication message or a signaling.

[0123] The first information may be used to instruct the terminal device to cancel the LCS session.

[0124] In some embodiments, the first network element may be an LMF network element, and the second network element may be an AMF network element. For example, the LMF network element sends a first message to the AMF network element, for instructing the terminal device to cancel the LCS session through the AMF network element.

[0125] In some embodiments, the first message may include a Cancel Location Request. For example, the LMF network element sends a Namf_Communication_N1N2MessageTransfer message to the AMF network element, which may include a Cancel Location Request. The Cancel Location Request may be used to instruct the terminal device, through the AMF network element, to cancel the LCS session.

[0126] In some embodiments, the location cancellation request may carry at least one of the following items (a1, a2, a3):

[0127] a1. GMLC address information. If the triggering condition information corresponding to the cancellation request is AF or LCS client, it is sent to the AMF network element through GMLC. Then the AMF network element instructs the LMF network element to cancel the ongoing LCS session based on the relevant information. In this case, the cancellation request may carry the relevant address information of the GMLC, such as the address information of the GMLC of the 5G core network (5GC);

[0128] a2. Reason for canceling positioning, such as the need to cancel an ongoing LCS session due to the terminal device's network switching from 5G to 4G, or from 5G to 6G;

[0129] a3. Identification information of the LMF network element.

[0130] Step 202: The second network element sends third information to the terminal device based on the first information.

[0131] In some embodiments, the terminal device receives third information sent by the second network element.

[0132] In some embodiments, the third information may be a type of communication information, such as an indication message or a signaling.

[0133] Among them, the third information can be used to instruct the terminal device to cancel the LCS session.

[0134] In some embodiments, the third information may include: a downlink non-access layer transport (DL NAS TRANSPORT) message, wherein the location cancellation request may be included in a location services message container (Location services message container) of the DL NAS TRANSPORT message. For example, the AMF network element sends the location cancellation request of the LMF network element to the terminal device through a DL NAS TRANSPORT message based on the received Namf_Communication_N1N2MessageTransfer message, and the location cancellation request is included in the location services message container of the DL NAS TRANSPORT message.

[0135] Step 203: The terminal device sends fourth information to the second network element based on the third information.

[0136] In some embodiments, the second network element receives fourth information sent by the terminal device.

[0137] In some embodiments, the terminal device may perform operations related to canceling the LCS session based on the third information.

[0138] In some embodiments, the terminal device may release resource information corresponding to the LCS session, such as releasing all resources related to real-time positioning.

[0139] In some embodiments, the fourth information may be used to determine the result of the terminal device canceling the LCS session, for example, result information such as success or failure of the terminal device canceling the LCS session.

[0140] In some embodiments, the fourth information may be a type of communication information, such as the fourth information may include: an uplink non-access layer transport (UL NAS TRANSPORT) message, wherein a cancel location response (Cancel Location Response) is included in a location service message container of the UL NAS TRANSPORT message. For example, based on the received DL NAS TRANSPORT message, the terminal device may perform operations related to canceling the LCS session, releasing all resources related to instant positioning, etc., and then send a UL NAS TRANSPORT message to the AMF network element to send the cancel location response of the terminal device to the LMF network element, where the cancel location response is included in the location service message container of the UL NAS TRANSPORT message.

[0141] In some embodiments, the cancel location response carries one of the following items (b1, b2, b3):

[0142] b1. Information indicating successful cancellation of the LCS session;

[0143] b2. Information about the failure to cancel the LCS session;

[0144] b3. The cancellation failure information of the LCS session and the corresponding failure reason information.

[0145] Step 204: The second network element sends second information to the first network element based on the fourth information.

[0146] In some embodiments, the first network element receives second information sent by the second network element.

[0147] In some embodiments, the second information may be a type of communication information, such as an indication message or a signaling.

[0148] The second information may be used to determine the result of the terminal device canceling the LCS session.

[0149] In some embodiments, the second information may include a cancel location response. For example, the AMF network element sends a Namf_communication_N1MessageNotify message to the LMF network element based on the UL NAS TRANSPORT message. The message may include a cancel location response. The cancel location response may be used to inform the LMF network element through the AMF network element of the result of the terminal device canceling the LCS session, such as whether the cancellation of the LCS session is successful or failed, and the reason for the failure.

[0150] In some embodiments, if the first network element determines, based on the second information, that the terminal device has successfully canceled the LCS session, it may send corresponding information to the second network element, so that the second network element determines that the LCS session cancellation is complete and releases resource information corresponding to the LCS session in the second network element. For example, if the LMF network element determines, based on the second information, that the terminal device has successfully canceled the LCS session, it may send corresponding information, such as Nlmf_Location_DetermineLocation Response, to the AMF network element, so that the AMF network element determines that the LCS session cancellation is complete and releases resource information corresponding to the LCS session in the AMF network element, such as context information related to the terminal device.

[0151] In some embodiments, the first network element may release the resource information corresponding to the LCS session in the first network element after determining that the terminal device has successfully canceled the LCS session based on the second information and sending corresponding information to the second network element; or the first network element may release the resource information corresponding to the LCS session in the first network element after receiving relevant information from the second network element instructing it to cancel the LCS session.

[0152] For example, the LMF network element may release the resource information corresponding to the LCS session in the LMF network element after determining that the terminal device has successfully canceled the LCS session based on the Namf_communication_N1MessageNotify message and sending the Nlmf_Location_DetermineLocation Response to the AMF network element; or the LMF network element may release the resource information corresponding to the LCS session in the LMF network element after receiving relevant information (such as the Nlmf_Location_CancelLocation message) from the AMF network element instructing it to cancel the LCS session.

[0153] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0154] To illustrate the specific execution process on the network device side, Figure 3 shows a flow chart of a session processing method according to an embodiment of the present disclosure. The method can be applied to the first network element side, and taking the first network element as an LMF network element as an example, the method can include the following steps.

[0155] Step 301: The LMF network element sends the first information to the AMF network element.

[0156] In some embodiments, the first information may be used to instruct the terminal device to cancel the LCS session. For example, after receiving relevant information (such as an Nlmf_Location_CancelLocation message) from the AMF network element instructing it to cancel the LCS session, the LMF network element may trigger the cancellation of the LCS session and send the first information to the AMF network element to instruct the terminal device to cancel the LCS session.

[0157] In some embodiments, the first message may be a communication message, such as Namf_Communication_N1N2MessageTransfer message.

[0158] In some embodiments, the first information may include a location cancellation request, which can be used to instruct the terminal device to cancel the LCS session through the AMF network element.

[0159] In some embodiments, the location cancellation request may carry at least one of the following items (a1, a2, a3):

[0160] a1. GMLC address information; a2. Reason for canceling positioning; a3. LMF network element identification information.

[0161] Step 302: The LMF network element receives the second information sent by the AMF network element.

[0162] In some embodiments, the second information may be used to determine a result of the terminal device canceling the LCS session, such as a success or failure result of the terminal device canceling the LCS session.

[0163] In some embodiments, the second information may include a cancellation positioning response, which can be used to inform the LMF network element through the AMF network element of the result of the terminal device canceling the LCS session.

[0164] In some embodiments, the cancel location response may carry one of the following items (b1, b2, b3):

[0165] b1. LCS session cancellation success information; b2. LCS session cancellation failure information; b3. LCS session cancellation failure information and corresponding failure reason information.

[0166] In some embodiments, the LMF network element may release the resource information corresponding to the LCS session in the LMF network element after determining that the terminal device has successfully canceled the LCS session based on the second information and sending corresponding information to the AMF network element; or the LMF network element may release the resource information corresponding to the LCS session in the LMF network element after receiving relevant information from the AMF network element instructing it to cancel the LCS session.

[0167] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 and 2, and will not be repeated here.

[0168] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0169] Figure 4 shows a flow chart of a session processing method according to an embodiment of the present disclosure. As shown in Figure 4, the method can be applied to the second network element side for execution. Taking the second network element as an AMF network element as an example, the method can include the following steps.

[0170] Step 401: The AMF network element receives the first information sent by the LMF network element.

[0171] In some embodiments, the first information may be used to instruct the terminal device to cancel the LCS session.

[0172] In some embodiments, the first information may include a location cancellation request, which can be used by the LMF network element to instruct the terminal device to cancel the LCS session through the AMF network element.

[0173] In some embodiments, the first message may be a communication message, such as Namf_Communication_N1N2MessageTransfer message.

[0174] In some embodiments, the location cancellation request may carry at least one of the following items (a1, a2, a3):

[0175] a1. GMLC address information; a2. Reason for canceling positioning; a3. LMF network element identification information.

[0176] Step 402: The AMF network element sends third information to the terminal device based on the first information.

[0177] In some embodiments, the third information may be used to instruct the terminal device to cancel the LCS session.

[0178] In some embodiments, the third information may include: a DL NAS TRANSPORT message, wherein the cancel positioning request may be included in a location service message container of the DL NAS TRANSPORT message.

[0179] For example, the terminal device can perform related operations to cancel the LCS session based on the received DL NAS TRANSPORT message, release all resources related to instant positioning, etc., and then send the fourth information to the AMF network element.

[0180] Step 403: The AMF network element receives the fourth information sent by the terminal device.

[0181] In some embodiments, the fourth information may be used to determine the result of the terminal device canceling the LCS session, for example, result information such as success or failure of the terminal device canceling the LCS session.

[0182] In some embodiments, the fourth information may be a type of communication information. For example, the fourth information may include: a UL NAS TRANSPORT message, wherein the cancel positioning response may be included in a location service message container of the UL NAS TRANSPORT message.

[0183] In some embodiments, the cancel location response carries one of the following items (b1, b2, b3):

[0184] b1. Information indicating successful cancellation of the LCS session;

[0185] b2. Information about the failure to cancel the LCS session;

[0186] b3. The cancellation failure information of the LCS session and the corresponding failure reason information.

[0187] Step 404: The AMF network element sends the second information to the LMF network element based on the fourth information.

[0188] In some embodiments, the second information may be used to determine the result of the terminal device canceling the LCS session, such as whether the cancellation of the LCS session is successful or failed, and the reason for the failure.

[0189] In some embodiments, the second information may include a cancel location response. For example, the AMF network element sends a Namf_communication_N1MessageNotify message to the LMF network element based on the UL NAS TRANSPORT message. The message may include a cancel location response. The cancel location response may be used to inform the LMF network element through the AMF network element of the result of the terminal device canceling the LCS session, such as whether the cancellation of the LCS session is successful or failed, and the reason for the failure.

[0190] In some embodiments, if the LMF network element determines that the terminal device has successfully canceled the LCS session based on the second information, it may send corresponding information to the AMF network element so that the AMF network element determines that the LCS session cancellation is complete and releases the resource information corresponding to the LCS session in the AMF network element, such as context information related to the terminal device.

[0191] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 3, and will not be repeated here.

[0192] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0193] Figure 5 shows a flow chart of a session processing method according to an embodiment of the present disclosure. As shown in Figure 5, the method can be applied to a terminal device and can include the following steps.

[0194] Step 501: The terminal device receives the third information sent by the AMF network element.

[0195] In some embodiments, the third information may be used to instruct the terminal device to cancel the LCS session.

[0196] In some embodiments, the third information may include: a DL NAS TRANSPORT message, wherein the cancel positioning request may be included in a location service message container of the DL NAS TRANSPORT message.

[0197] In some embodiments, the location cancellation request may carry at least one of the following items (a1, a2, a3):

[0198] a1. GMLC address information; a2. Reason for canceling positioning; a3. LMF network element identification information.

[0199] In some embodiments, after the terminal device receives the third information sent by the AMF network element, the resource information corresponding to the LCS session in the terminal device can be released.

[0200] Step 502: The terminal device sends the fourth information to the AMF network element based on the third information.

[0201] In some embodiments, the fourth information may be used to determine the result of the terminal device canceling the LCS session, for example, result information such as success or failure of the terminal device canceling the LCS session.

[0202] In some embodiments, the fourth information may be a type of communication information. For example, the fourth information may include: a UL NAS TRANSPORT message, wherein the cancel positioning response may be included in a location service message container of the UL NAS TRANSPORT message.

[0203] In some embodiments, the cancel location response carries one of the following items (b1, b2, b3):

[0204] b1. Information indicating successful cancellation of the LCS session;

[0205] b2. Information about the failure to cancel the LCS session;

[0206] b3. The cancellation failure information of the LCS session and the corresponding failure reason information.

[0207] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 4, and will not be repeated here.

[0208] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0209] Figure 6 shows a flow chart of a session processing method according to an embodiment of the present disclosure. As shown in Figure 6, the method can be applied to a network device (network device 102 as shown in Figure 1) for execution, and the network device can include a first network element and a second network element, and can include the following steps.

[0210] Step 601: The network device sends third information to the terminal device.

[0211] In some embodiments, the third information may be used to instruct the terminal device to cancel the LCS session.

[0212] In some embodiments, the third information may include: a DL NAS TRANSPORT message, wherein the cancel positioning request may be included in a location service message container of the DL NAS TRANSPORT message.

[0213] In some embodiments, the location cancellation request may carry at least one of the following items (a1, a2, a3):

[0214] a1. GMLC address information; a2. Reason for canceling positioning; a3. LMF network element identification information.

[0215] Step 602: The network device receives the fourth information sent by the terminal device.

[0216] In some embodiments, the fourth information may be used to determine a result of the terminal device canceling the LCS session, for example, result information such as success or failure of the terminal device canceling the LCS session.

[0217] In some embodiments, the fourth information may be a type of communication information. For example, the fourth information may include: a UL NAS TRANSPORT message, wherein the cancel positioning response may be included in a location service message container of the UL NAS TRANSPORT message.

[0218] In some embodiments, the cancel location response carries one of the following items (b1, b2, b3):

[0219] b1. Information indicating successful cancellation of the LCS session;

[0220] b2. Information about the failure to cancel the LCS session;

[0221] b3. The cancellation failure information of the LCS session and the corresponding failure reason information.

[0222] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 5, and will not be repeated here.

[0223] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0224] The method of this embodiment can be applied to a variety of application scenarios. As one of the application scenarios, for example, when a UE switches from a 5G network to a 4G network, it is necessary to cancel the LCS session on the 5G network and then establish the LCS session on the 4G network. As shown in Figure 7, a timing diagram of an example of a session processing method according to an embodiment of the present disclosure is shown. As shown in Figure 7, the process may include:

[0225] Step 701: The AF or LCS client triggers an LCS session, or the UE triggers an LCS session.

[0226] The LCS session may be used to locate the UE.

[0227] The UE may also be referred to as the target UE. The process initiated by the AF or LCS client may be referred to as the 5GC-MT-LR process, while the process initiated by the UE may be referred to as the 5GC-MO-LR process.

[0228] Step 702: The LMF network element processes the ongoing LCS session.

[0229] Step 703: When the 5G core network corresponding to the UE switches to the 4G core network, the AMF network element receives a notification message from the MME network element that relocation is required.

[0230] For example, when the handover from the 5G core network (5GS) to the 4G core network (Evolved Packet System, EPS) is successful, the AMF network element receives a notification message from the mobility management entity (MME) network element that relocation is required and records the target MME ID.

[0231] Step 704: The AMF network element sends an Nmmf_Location_CancelLocation message to the LMF network element, instructing the LMF network element to cancel the ongoing LCS session.

[0232] The message may include one or more of the following: the address information of the GMLC, the reason for canceling the positioning, and the identification information of the LMF network element.

[0233] Step 705: The LMF network element cancels the ongoing LCS session in the 5G core network.

[0234] Step 7051: The LMF network element sends a Namf_Communication_N1N2MessageTransfer message to the AMF network element.

[0235] The message may include a Cancel Location Request, which may include one or more of: a1, address information of the GMLC, a2, reason information for canceling the location, and a3, identification information of the LMF network element.

[0236] Step 7052: The AMF network element sends a DL NAS TRANSPORT message to the UE.

[0237] The Cancel Positioning Request is included in the Location Service Message Container of the DL NAS TRANSPORT message.

[0238] Step 7053: The UE sends a UL NAS TRANSPORT message to the AMF network element.

[0239] After receiving the DL NAS TRANSPORT message, the UE can perform related operations to cancel the LCS session, release the resource information corresponding to the LCS session in the UE, and send a UL NAS TRANSPORT message to the AMF network element, wherein the Cancel Location Response (Cancel Location Response) is included in the location service message container of the UL NAS TRANSPORT message. The Cancel Location Response can be used to inform the LMF network element of the result of the terminal device canceling the LCS session through the AMF network element. The Cancel Location Response may carry one of the following: b1, LCS session cancellation success information; b2, LCS session cancellation failure information; b3, LCS session cancellation failure information and corresponding failure reason information.

[0240] Step 7054: The AMF network element sends a Namf_communication_N1MessageNotify message to the LMF network element.

[0241] This message may include the UE's cancellation positioning response.

[0242] Step 706: The LMF network element sends Nlmf_Location_DetermineLocation Response to the AMF network element to inform that the LCS session is successfully canceled.

[0243] Among them, the AMF network element can release the resource information corresponding to the LCS session in the AMF network element.

[0244] In this embodiment, the LMF network element may release the resource information corresponding to the LCS session in the LMF network element after step 704 or after step 706.

[0245] Step 707: If a positioning request is received from 5GC-GMLC, the AMF network element responds to the failure of 5GC-GMLC by sending Namf_location_ProvidePositioningInforesponse.

[0246] Step 708: If step 707 is executed, the 5GC-GMLC forwards the positioning request including all parameters requested by the LCS and the target MME ID to the EPC-GMLC.

[0247] Step 709: In the case of MT-LR, EPC-GMLC forwards the LCS request to the target MME received in step 708. The LCS session is started in EPS. In the case of MO-LR, the UE restarts EPC-MO-LR.

[0248] Step 710: If step 708 is executed, the EPC-GMLC sends the UE position estimation result to the 5GC-GMLC.

[0249] Step 711: If step 710 is executed, the 5GC-GMLC forwards the result of the EPC-GMLC to the AF or LCS client.

[0250] For the description of the specific examples in this embodiment, please refer to the corresponding description of the embodiments in Figures 1 to 6, and will not be repeated here.

[0251] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0252] In the embodiments provided above, the methods provided in the embodiments of the present disclosure are described from the perspectives of terminal devices and network devices, respectively. To implement the various functions of the methods provided in the embodiments of the present disclosure, the terminal devices and network devices may include hardware structures and software modules, and implement the aforementioned functions in the form of hardware structures, software modules, or hardware structures and software modules. Certain of the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures and software modules.

[0253] Corresponding to the session processing methods provided in the above-mentioned embodiments, the present disclosure also provides a communication processing device. Since the communication processing device provided in the embodiment of the present disclosure corresponds to the session processing methods provided in the above-mentioned embodiments, the implementation method of the session processing method is also applicable to the communication processing device provided in this embodiment and will not be described in detail in this embodiment.

[0254] FIG8 is a schematic structural diagram of a first network element provided in an embodiment of the present disclosure.

[0255] As shown in Figure 8, the first network element may include: a first communication module 81, configured to send first information to the AMF network element, where the first information is used to instruct the terminal device to cancel the LCS session.

[0256] In some embodiments, the first information includes a request to cancel positioning.

[0257] In some embodiments, the cancel location request carries at least one of the following:

[0258] GMLC address information; reason information for canceling positioning; LMF network element identification information.

[0259] In some embodiments, the first communication module 81 is further configured to receive second information sent by the AMF network element, where the second information is used to determine the result of the terminal device canceling the LCS session.

[0260] In some embodiments, the second information includes a cancel positioning response.

[0261] In some embodiments, the cancel location response carries one of the following:

[0262] LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

[0263] In some embodiments, the first communication module 81 is further configured to release resource information corresponding to the LCS session in the LMF network element.

[0264] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0265] FIG9 is a schematic structural diagram of a second network element provided in an embodiment of the present disclosure.

[0266] As shown in Figure 9, the second network element may include: a second communication module 91, configured to receive first information sent by the LMF network element, where the first information is used to instruct the terminal device to cancel the LCS session.

[0267] In some embodiments, the first information includes a request to cancel positioning.

[0268] In some embodiments, the cancel location request carries at least one of the following:

[0269] GMLC address information; information about the reason for canceling positioning; and identification information of the LMF network element.

[0270] In some embodiments, the second communication module 91 is further configured to send third information to the terminal device according to the first information, where the third information is used to indicate cancellation of the LCS session.

[0271] In some embodiments, the third information includes: a DL NAS TRANSPORT message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

[0272] In some embodiments, the second communication module 91 is further configured to receive fourth information sent by the terminal device, where the fourth information is used to determine the result of the terminal device canceling the LCS session.

[0273] In some embodiments, the fourth information includes: a UL NAS TRANSPORT message, wherein the cancel positioning response is included in a location service message container of the UL NAS TRANSPORT message.

[0274] In some embodiments, the second communication module 91 is further configured to send second information to the LMF network element based on the fourth information, where the second information is used to determine the result of the terminal device canceling the LCS session.

[0275] In some embodiments, the second information includes a cancel positioning response.

[0276] In some embodiments, the cancel location response carries one of the following:

[0277] LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

[0278] In some embodiments, the second communication module 91 is further configured to determine that the cancellation of the LCS session is completed and release the resource information corresponding to the LCS session in the AMF network element.

[0279] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0280] FIG10 is a schematic structural diagram of a terminal device provided in an embodiment of the present disclosure.

[0281] As shown in Figure 10, the terminal device may include: a third communication module 1001, configured to receive third information sent by the AMF network element, and the third information is used to instruct the terminal device to cancel the LCS session.

[0282] In some embodiments, the third information includes: a DL NAS TRANSPORT message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

[0283] In some embodiments, the cancel location request carries at least one of the following:

[0284] GMLC address information; reason information for canceling positioning; LMF network element identification information.

[0285] In some embodiments, the third communication module 1001 is further configured to send fourth information to the AMF network element based on the third information, and the fourth information is used to determine the result of the terminal device canceling the LCS session.

[0286] In some embodiments, the fourth information includes: a UL NAS TRANSPORT message, wherein the cancel positioning response is included in a location service message container of the UL NAS TRANSPORT message.

[0287] In some embodiments, the cancel location response carries one of the following:

[0288] LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

[0289] In some embodiments, the third communication module 1001 is further configured to release resource information corresponding to the LCS session in the terminal device.

[0290] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0291] FIG11 is a schematic structural diagram of a network device provided in an embodiment of the present disclosure.

[0292] As shown in Figure 11, the network device may include: a fourth communication module 1101, configured to send third information to the terminal device, the third information being used to instruct the terminal device to cancel the LCS session; and receive fourth information sent by the terminal device, the fourth information being used to determine the result of the terminal device canceling the LCS session.

[0293] By applying the technical solution of this embodiment, a solution for canceling an LCS session is provided to meet the need to cancel the current LCS session when a terminal device network switch occurs.

[0294] Please refer to Figure 12, which is a schematic diagram of the structure of a communication device 1800 provided in this embodiment. Communication device 1800 can be a network device or a user device, or a chip, chip system, or processor that supports the network device to implement the above method. It can also be a chip, chip system, or processor that supports the user device to implement the above method. This device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0295] The communication device 1800 may include one or more processors 1801. The processor 1801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0296] Optionally, the communication device 1800 may further include one or more memories 1802, on which a computer program 1804 may be stored. The processor 1801 executes the computer program 1804, causing the communication device 1800 to perform the method described in the above method embodiment. Optionally, the memory 1802 may also store data. The communication device 1800 and the memory 1802 may be provided separately or integrated together.

[0297] Optionally, the communication device 1800 may further include a transceiver 1805 and an antenna 1806. The transceiver 1805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. The transceiver 1805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0298] Optionally, the communication device 1800 may further include one or more interface circuits 1807. The interface circuit 1807 is configured to receive code instructions and transmit the instructions to the processor 1801. The processor 1801 executes the code instructions to enable the communication device 1800 to perform the method described in the above method embodiment.

[0299] In one implementation, processor 1801 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0300] In one implementation, processor 1801 may store a computer program 1803. Computer program 1803, when executed on processor 1801, enables communication device 1800 to perform the method described in the above method embodiment. Computer program 1803 may be embedded in processor 1801, in which case processor 1801 may be implemented by hardware.

[0301] In one implementation, the communication device 1800 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0302] The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may not be limited to FIG12. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0303] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0304] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0305] (3) ASIC, such as modem;

[0306] (4) Modules that can be embedded in other devices;

[0307] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0308] (6)Others, etc.

[0309] If the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 13. The chip shown in Figure 13 includes a processor 1901 and an interface 1902. The number of processors 1901 can be one or more, and the number of interfaces 1902 can be multiple.

[0310] Optionally, the chip further includes a memory 1903, which is used to store necessary computer programs and data.

[0311] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functionality for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0312] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0313] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0314] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0315] Those skilled in the art will understand that the various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0316] The at least one in the present disclosure can also be described as one or more, and the multiple can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0317] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., a magnetic disk, an optical disk, a memory, a programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0318] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0319] Computer systems may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The client and server relationship arises through computer programs running on the respective computers and having a client-server relationship to each other.

[0320] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of this disclosure can be achieved. This is not limited herein.

[0321] In addition, it should be understood that the various embodiments described in the present disclosure may be implemented independently or in combination with other embodiments when the solution permits.

[0322] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments applied for herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0323] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0324] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A session processing method, characterized in that: Executed by a first network element, the method includes: Send first information to the second network element, where the first information is used to instruct the terminal device to cancel the location service LCS session.

2. The method according to claim 1, characterized in that The first information includes a request to cancel positioning.

3. The method according to claim 2, characterized in that The cancel location request carries at least one of the following: Address information of the Gateway Mobile Location Center GMLC; Reason information for cancelling positioning; Identification information of the first network element.

4. The method according to any one of claims 1 to 3, characterized in that After sending the first information to the second network element, the method further includes: Receive second information sent by the second network element, where the second information is used to determine the result of the terminal device canceling the LCS session.

5. The method according to claim 4, characterized in that The second information includes a positioning cancellation response.

6. The method according to claim 5, characterized in that The cancel location response carries one of the following: LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: Release local resource information corresponding to the LCS session.

8. A session processing method, characterized in that: Executed by the second network element, the method includes: Receive first information sent by a first network element, where the first information is used to instruct a terminal device to cancel a location service LCS session.

9. The method according to claim 8, characterized in that The first information includes a request to cancel positioning.

10. The method according to claim 9, characterized in that The cancel location request carries at least one of the following: Address information of the Gateway Mobile Location Center GMLC; Reason information for cancelling positioning; The identification information of the first network element.

11. The method according to any one of claims 8 to 10, characterized in that After receiving the first information sent by the first network element, the method further includes: According to the first information, third information is sent to the terminal device, where the third information is used to indicate cancellation of the LCS session.

12. The method according to claim 11, characterized in that The third information includes: a downlink non-access layer transmission DL NAS TRANSPORT message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

13. The method according to any one of claims 11 to 12, characterized in that After sending third information to the terminal device according to the first information, the method further includes: Receive fourth information sent by the terminal device, where the fourth information is used to determine a result of the terminal device canceling the LCS session.

14. The method according to claim 13, characterized in that The fourth information includes: an uplink non-access layer transmission UL NAS TRANSPORT message, wherein the cancellation positioning response is included in a location service message container of the UL NAS TRANSPORT message.

15. The method according to any one of claims 13 to 14, characterized in that After receiving the fourth information sent by the terminal device, the method further includes: According to the fourth information, second information is sent to the first network element, where the second information is used to determine the result of the terminal device canceling the LCS session.

16. The method according to claim 15, characterized in that The second information includes a positioning cancellation response.

17. The method according to claim 16, characterized in that The cancel location response carries one of the following: LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

18. The method according to claim 17, characterized in that The method further comprises: Determine that the LCS session cancellation is complete, and release local resource information corresponding to the LCS session.

19. A session processing method, characterized in that: Executed by a terminal device, the method includes: Receive third information sent by the second network element, where the third information is used to instruct the terminal device to cancel the location service LCS session.

20. The method according to claim 19, characterized in that The third information includes: a downlink non-access layer transmission DL NAS TRANSPORT message, wherein the cancel positioning request is included in a location service message container of the DL NAS TRANSPORT message.

21. The method according to claim 20, characterized in that The cancel location request carries at least one of the following: Address information of the Gateway Mobile Location Center GMLC; Reason information for cancelling positioning; Identification information of the first network element.

22. The method according to any one of claims 19 to 21, characterized in that After receiving the third information sent by the second network element, the method further includes: According to the third information, fourth information is sent to the second network element, where the fourth information is used to determine the result of the terminal device canceling the LCS session.

23. The method according to claim 22, characterized in that The fourth information includes: an uplink non-access layer transmission UL NAS TRANSPORT message, wherein the cancellation positioning response is included in a location service message container of the UL NAS TRANSPORT message.

24. The method according to claim 23, characterized in that The cancel location response carries one of the following: LCS session cancellation success information; LCS session cancellation failure information; LCS session cancellation failure information and corresponding failure reason information.

25. The method according to any one of claims 19 to 24, characterized in that After receiving the third information sent by the second network element, the method further includes: Release local resource information corresponding to the LCS session.

26. A session processing method, characterized in that: The method comprises: The location management function LMF network element sends first information to the mobility management function AMF network element, where the first information is used to instruct the terminal device to cancel the location service LCS session; The AMF network element sends third information to the terminal device according to the first information; The AMF network element receives the fourth information sent by the terminal device based on the third information; and based on the fourth information, sends the second information to the LMF network element, wherein the second information is used to determine the result of the terminal device canceling the LCS session.

27. A session processing method, characterized in that: The method further comprises: The network device sends third information to the terminal device, where the third information is used to instruct the terminal device to cancel the location service LCS session; The network device receives fourth information sent by the terminal device, where the fourth information is used to determine a result of the terminal device canceling the LCS session.

28. A first network element, characterized in that: include: The first communication module is configured to send first information to the second network element, where the first information is used to instruct the terminal device to cancel the location service LCS session.

29. A second network element, characterized in that: include: The second communication module is configured to receive first information sent by the first network element, where the first information is used to instruct the terminal device to cancel the location service LCS session.

30. A terminal device, characterized in that: include: The third communication module is configured to receive third information sent by the second network element, where the third information is used to instruct the terminal device to cancel the location service LCS session.

31. A network device, characterized in that: include: A fourth communication module is configured to send third information to the terminal device, where the third information is used to instruct the terminal device to cancel the location service LCS session; Receive fourth information sent by the terminal device, where the fourth information is used to determine a result of the terminal device canceling the LCS session.

32. A communication processing system, characterized in that: include: Network equipment and terminal equipment; The network device performs the method according to any one of claims 1 to 18; The terminal device executes the method according to any one of claims 19 to 25.

33. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method described in any one of claims 1 to 27 can be implemented.

34. A communication device, wherein: include: Transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer executable instructions on the memory, and can implement any one of the methods of claims 1 to 27.

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