WO2019052434A1 - Data transmission method, apparatus and system based on user equipment position - Google Patents

Abstract

The present invention relates to a method, an apparatus and a data transmission system based on the location of a user terminal. The method includes the following steps: an access network (AN) receives a subscription request associated with a location from an Access and Mobility Management (AMF) functional entity; when an UE enters a specific zone or leaves the zone, the AN sends a notification message to the AMF; and when the UE is outside the specific area, the AN rejects uplink and downlink data from the EU.

Description

Data transmission method, device and system based on user equipment location

This application claims the priority of the Chinese Patent Application filed on Sep. 12, 2017, the Chinese Patent Office, the application number is 201710818676.5, and the application name is "a data transmission method, device and system based on user equipment location". This is incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, and system based on user equipment location.

Background technique

In the 5th generation (5G) communication system, when the user equipment (User Equipment, UE) is in the CM-CONNECTED state, the core network access and mobility management function (AMF) entity can A request report is sent to the access network (AN) for requesting the location where the UE is currently located. The request report sent by the AMF to the AN includes a cell list. When the AN determines that the UE moves from one cell in the cell list to another cell, the AN sends a location report to the AMF. When the UE transitions to CM-IDLE or the AMF sends a cancellation indication to the AN, the AN will no longer continue reporting the location of the UE to the AMF. This process can be used for services that require accurate cell identification (eg, emergency services, lawful interception, billing). However, this location reporting method for a service based on UE location but does not require accurate cell identification, a large amount of location reporting information generated between AMF and AN, will cause many unnecessary signaling transmissions.

Summary of the invention

The embodiment of the invention provides a data transmission method, device and system based on the location of the UE of the user equipment, so as to solve the problem of avoiding excessive signaling transmission in the case of identifying whether the UE moves in or out of a specific area.

To achieve the above objective, the embodiment of the present invention provides the following technical solutions:

In a first aspect, a data transmission based on a location of a user equipment UE is provided, the method comprising: the access network AN receiving a location subscription request from an access and mobility management function entity, the location subscription request indicating the AN Notifying the access and mobility management function entity if the UE moves in or out of a specific area; the AN sends a subscription response message to the access and mobility management function entity, the subscription response message is used to indicate The UE moves in or out of the specific area. That is to say, when the AN acquires the location of the UE, it determines whether the UE moves in or out of the specific area. A notification message is sent to the access and mobility management function entity only when the UE moves in or out of a particular area. It is determined by the AN whether the UE moves in or out of a specific area, which avoids frequent signaling transmission between the AN and the access and mobility management function entity, and can also avoid the burden of the core network side device being overweight.

In a possible implementation manner, before the AN sends a subscription response message to the access and mobility management function entity, the method further includes: the AN receives downlink data sent to the UE; and the AN determines the UE In an RRC-inactive state; the AN initiates paging to the UE to establish a connection with the UE; and the AN determines that the UE moves in or out of the specific area. The UE may be in a RRC-inactive state due to energy saving or in order to release limited channel resources. When it is necessary to acquire the UE location, the AN needs to page the UE to establish a connection with the UE.

In a possible implementation manner, the AN further receives data discarding indication information from the access and mobility management function entity, where the data discarding indication information is used to indicate that the AN discards the sending when the UE moves out of the specific area. Downlink data for the UE and/or uplink data sent by the UE.

In a second aspect, the embodiment of the present invention further provides a data transmission method based on a UE location of a user equipment, including: an access and mobility management function entity sends a location subscription request to an access network AN, where the subscription request is used to indicate The AN notifies the access and mobility management function entity if the UE moves in or out of a particular area; the access and mobility management function entity receives a subscription response message from the base station, the subscription The response message is used to instruct the UE to move in or out of the specific area.

In a possible implementation, the access and mobility management function entity sends data discarding indication information to the AN; the data discarding indication information is used to indicate that the AN is in the case that the UE moves out of the specific area. And discarding downlink data sent to the UE and/or uplink data sent by the UE.

In a third aspect, the embodiment of the present invention further provides a data transmission method based on a location of a UE of a user equipment, including: an access network AN receives data discarding indication information from an access and mobility management function entity; The UE moves out of the specific area; the AN discards the downlink data sent to the UE or the uplink data of the UE according to the data discarding indication information.

In a possible implementation, the method further includes: the AN receives downlink data sent to the UE; the AN determines that the UE is in an RRC-inactive state; and the AN initiates a search to the UE Call to establish a connection with the UE.

In one possible design, the specific areas involved in the above aspects include the LADN service area of the UE or the area in which the UE allows communication connections to occur. The LADN service area of the UE or the area where the UE allows the communication connection to occur, and may specifically be a cell list. When the AN acquires the location of the UE (eg, accessing the cell), the location of the UE is compared with the list of cells to determine whether the UE is currently within a particular area or outside of a particular area. Optionally, the AN may also obtain, from the context of the UE, a location where the UE was located at a previous moment to determine whether the UE is in a specific area or a specific area at a previous moment. It is further determined whether the current time of the UE is moving in or out of the specific area. There are many possibilities for the triggering condition of the foregoing judging process. One possible implementation is to trigger the AN judgment when the UE moves across the cell. Another possible implementation is when the AN establishes a connection with the UE or re-establishes a connection (for example, an RRC connection). , trigger AN judgment.

In a possible implementation manner, the location subscription request related to the foregoing aspect includes information for indicating the specific area. The information indicating the specific area may be specifically a cell list corresponding to the specific area, or may be indication information of the cell list corresponding to the specific area. The difference between the two is that the cell list corresponding to the specific area is sent to the AN along with the location subscription request. In a possible implementation, when the UE is registered to the network by the AN, the cell list corresponding to the specific area has been delivered to the AN, and the AN stores the correspondence between the cell list corresponding to the specific area and the identifier of the UE. At this time, the indication information of the cell list corresponding to the specific area may be an identifier of the UE, and the AN may determine the specific area corresponding to the UE according to the identifier of the UE and the corresponding relationship.

The data discarding indication information involved in the foregoing aspect includes a PDU session identifier. Optionally, the data discarding indication information may be separately sent to the UE as independent signaling, or may be part of the location definition request. Specifically, when the AN receives the data (the downlink data sent by the core network side to the UE or the uplink data sent by the UE), it is determined whether the data is related to the PDU session identifier in the data discarding indication information. If relevant, it is necessary to further determine whether the location where the current UE is located is within a specific area, and if the current UE is within the specific area, the data is forwarded; otherwise, the data is discarded. With this method, data transmission control based on UE location can be achieved.

In a fourth aspect, an embodiment of the present invention provides an apparatus for data transmission based on a location of a UE of a user equipment, where the apparatus has a function of implementing an access network behavior in the foregoing method embodiment. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, an embodiment of the present invention provides an access network device, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor is connected to the memory through the bus. While the device is in operation, the processor executes the computer-executable instructions stored by the memory to cause the access network device to perform a method of data transmission based on a location of a user equipment UE as described in any of the above first aspects.

In a sixth aspect, an embodiment of the present invention provides an apparatus for data transmission based on a location of a UE of a user equipment, the apparatus having a function of implementing an entity of an access and mobility management function in the foregoing method embodiment. This function can be implemented in hardware or in hardware by executing the corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a seventh aspect, an embodiment of the present invention provides an access and mobility management function device, including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer execution instruction, and the processor and the memory pass the a bus connection, when the device is running, the processor executes the computer-executed instructions stored in the memory to cause the access and mobility management function to perform an implementation of any of the second and third aspects above, a user-based device A method of data transmission at a UE location.

In an eighth aspect, an embodiment of the present invention provides a system for data transmission based on a location of a UE of a user equipment, including an access network device and an access and mobility management function device in the foregoing method embodiment or the device embodiment.

In a ninth aspect, an embodiment of the present invention further provides a computer program product for performing the method performed by the access network AN described in the above aspect when the computer product is executed.

In a tenth aspect, an embodiment of the present invention further provides a computer program product for performing the method performed by the access and mobility management function entity described above when the computer product is executed.

In an eleventh aspect, an embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium stores instructions for performing the method performed by the access network AN described above.

In a twelfth aspect, the embodiment of the present invention further provides a computer readable storage medium, where the computer readable storage medium stores instructions for executing the access and mobility management function entity described above. Method of execution

In the embodiment of the present invention, the names of the access network and the access and mobility management function entities are not limited to the entities themselves. In actual implementation, these entities may appear under other names. As long as the functions of the various entities are similar to the present invention; or the entity has multiple functions, one or more of the functions are similar to the present invention, and are within the scope of the claims and equivalents thereof.

These and other aspects of the invention will be more apparent from the following description of the embodiments.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of a possible system network according to an embodiment of the present invention;

2 is a schematic diagram of a computer device according to an embodiment of the present invention;

3 is a schematic flowchart of a method for data processing based on a location of a user terminal according to an embodiment of the present invention;

FIG. 4 is a schematic flowchart diagram of another method for data processing based on location of a user terminal according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart diagram of another method for data processing based on location of a user terminal according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an access network apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an access and mobility management function device according to an embodiment of the present invention;

FIG. 8 is a diagram showing a data processing system based on a location of a user terminal according to an embodiment of the present invention.

Detailed ways

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, a brief introduction of the related art of the present application is first given as follows.

Radio Resource Control (RRC) inactive state, that is, RRC-inactive state: when the UE is in the RRC inactive state, the RRC connection between the UE and the base station is released, but the signaling connection and data connection between the base station and the core network are Reserved, and the base station reserves the context of the UE, so that the UE can quickly resume the connection with the network next time. When the UE is in the RRC inactive state, low-latency control requirements can be implemented with minimum signaling, and the power consumption when the UE is in the LTE RRC idle state is approached, while the same is in the access network (such as RAN/CN). The number of UEs that the resource consumes can be maximized.

Local Area Data Network (LADN) service area: The UE can access the data network through a PDU session in the area. A LADN service area usually consists of a series of Tracking Areas, which in turn are geographical areas consisting of a continuously covered area. therefore. In the embodiment of the present invention, the LADN service area may be characterized by a cell list, and the cells in the cell list are geographically connected.

Allowed area for initiating a communication connection: Within an area of a given radio access technology (RAT) that allows a communication connection to be initiated, the UE may initiate communication with the network based on the subscription information.

Non-allowed area is not allowed: in an area where a given RAT is not allowed to initiate a communication connection, the UE is not allowed to initiate any communication connection other than the registration request (eg, service request, etc.) However, the UE needs to respond to the paging of the network.

The area that allows the initiation of the communication connection and the area that does not allow the initiation of the communication connection may be composed of a series of Tracking Areas, where the TA may be composed of at least one cell, thus allowing the area in which the communication connection is initiated and not allowed to initiate The area of the communication connection can also be characterized by a list of cells.

The area restriction list is used to characterize the scope of the service area restriction, and can be represented by an allowed area and a non-allowed area.

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. The specific method of operation in the method embodiments can also be applied to device embodiments or system embodiments.

The network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

Embodiments of the present invention provide a data transmission method based on a location of a user terminal, which is applicable to the system 100 shown in FIG. 1, in which the UE can communicate with a communication network. The user equipment UE involved in the present application may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices or other processing devices connected to the wireless modem, and various forms of user equipment ( User Equipment, UE), terminal, terminal equipment, soft terminal, etc. For convenience of description, in the present application, the devices mentioned above are collectively referred to as user equipments or UEs. The access network AN includes at least one base station, and the range covered by the base station includes at least one cell.

The access network AN receives a location subscription request sent by the access and mobility management function entity AMF, and the location subscription request is used to indicate that the access network accesses the UE when the UE moves in or out of a specific area. And the mobility management function entity sends a notification message. Specifically, the subscription request may include information for indicating the specific area, such as a cell list included in a local area data network (LADN) service area of the UE or an area allowed by the UE to initiate a communication connection (allowed) Area) A list of cells included. The LADN service area refers to an area where the UE can access the data network only at a specific location. The core network may determine a LADN service area of a UE based on the operator policy and user subscription information.

Subsequently, when the AN determines that the UE moves in or out of the specific area according to the location of the UE, the AN sends a subscription response message to the AMF, to notify the AMF that the UE moves in or out of the specific area.

In particular, when the UE is in the RRC-inactive state, the AN may initiate a page to establish a connection with the UE.

In addition, the AN also receives data discarding indication information from the AMF, and discards downlink data sent to the UE and/or uplink data sent by the UE when the AN determines that the UE moves out of the specific area. It should be noted that the data discarding indication information may be carried in the location subscription request, or may be delivered to the AN as independent information.

Compared with the prior art, the AN can report the location of the UE when the UE moves in or out of a specific area, and the location between the different cells in the specific area does not need to report the location, thereby reducing the number of location information reported by the AN. This particular area can be defined according to the business needs of the AMF. In an application scenario, when the cell coverage area covered by the UE currently accessed by the UE and the cell range included in the LADN service area of the current registration area of the UE intersect (the “crossover” refers to the cell coverage covered by the AN and The LADN service area of the UE in the current registration area includes overlapping cell ranges, that is, there is at least one cell simultaneously in the range covered by the AN and the LADN service area of the UE in the current registration area, and there is at least one When the cell is only within the coverage of the AN, the AN needs to send a subscription response message to the AMF if the UE moves in or out of the cell range included in the LADN service area due to the location movement. In another scenario, when the UE establishes a PDU session, in the case of mobility limitation, when the cell covered by the AN is across the allowed area and the non-allowed area, the AMF sends a location subscription request to the RAN. The AMF sends an area restriction list to the RAN. When the UE moves in and out between the allowed area and the non-allowed area, the AN sends a notification message to the AMF.

As is known, there are many functional network elements in a communication network, and various information can also be flexibly stored in different network elements, and various functions can be flexibly implemented through different network element interactions. For example, in the present invention, the AN and the AMF may be implemented in the same network element, or may be implemented by different network elements. When the AN and the AMF can be implemented in the same network element, the direct signaling interaction between the AN and the AMF (such as a location subscription request, etc.) can be used for internal message interaction of the network element. A person skilled in the art has the ability to design a flexible communication network implementation according to the content of the embodiments of the present invention. In the following, only some instantiated solutions are used to illustrate some possible implementations of the embodiments of the present invention in the communication network, regardless of the future. The functions, functions, and interactions of the network elements are all within the scope of the present invention as long as they have the functions of the functional entities in the embodiments of the present invention.

As shown in FIG. 2, the control plane function entity 11 and the policy function entity 13 in FIG. 1 can be implemented in the manner of the computer device (or system) in FIG.

FIG. 2 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device 200 includes at least one processor 21, a communication bus 22, a memory 23, and at least one communication interface 24.

The processor 21 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention.

Communication bus 22 may include a path for communicating information between the components described above. The communication interface 24 uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.

The memory 23 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions. The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor.

The memory 23 is used to store application code for executing the solution of the present invention, and is controlled by the processor 21 for execution. The processor 21 is configured to execute application code stored in the memory 23.

In a particular implementation, as an embodiment, processor 21 may include one or more CPUs, such as CPU0 and CPU1 in FIG.

In a particular implementation, as an embodiment, computer device 200 can include multiple processors, such as processor 21 and processor 28 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

In a particular implementation, computer device 200 may also include output device 25 and input device 26 as an embodiment. Output device 25 is in communication with processor 21 and can display information in a variety of ways. For example, the output device 25 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait. Input device 26 is in communication with processor 21 and can accept user input in a variety of ways. For example, input device 26 can be a mouse, keyboard, touch screen device, or sensing device, and the like.

The computer device 200 described above can be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device 200 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or have FIG. A device of similar structure. Embodiments of the invention do not limit the type of computer device 200.

Exemplarily, the AN in FIG. 1 may be the device shown in FIG. 2, and one or more software modules are stored in the memory of the AN. The AN can implement the software module through the processor and the program code in the memory to implement data processing based on the location of the user terminal.

Alternatively, the AMF in FIG. 1 may be the device shown in FIG. 2, and one or more software modules are stored in the memory of the AMF. The AMF can implement the software module through the processor and the program code in the memory to implement data processing based on the location of the user terminal.

A method for data processing based on user terminal location provided by an embodiment of the present invention is described below in conjunction with a flowchart.

FIG. 3 provides a schematic flowchart of a method for data processing based on location of a user terminal.

In step 301, the UE registers with the network and establishes a PDU session.

The UE is registered in the network through the access network. In this embodiment, it is assumed that the PDU session identifier established by the UE and the network is session A.

For the PDU session establishment process, reference may be made to the prior art, and details are not described herein again.

In step 303, the AMF sends a location subscription request to the AN, and the AN receives a location subscription request from the AMF. The location subscription request is used to instruct the AN to notify the AMF if the UE moves in or out of a specific area.

Optionally, the specific area includes an LADN service area of the UE or an area where the UE allows to initiate a communication connection.

Specifically, the location subscription request may include information for indicating the specific area. For example, a possible implementation manner is that the location subscription request carries the cell list included in the LADN service area of the UE or the cell list included in the area in which the UE is allowed to initiate a communication connection; another possible implementation manner is Before receiving the location subscription request, the AN first receives the cell list included in the LADN service area of the UE sent by the AMF or the cell list included in the area where the UE allows to initiate the communication connection, and the AN locally associates it with the identifier of the UE. Storage, and the location subscription request carries only the identity of the UE. When the AN receives the location subscription request message sent by the AMF, the specific area is acquired according to the UE identity therein.

Step 305: The AN sends a subscription response message to the AMF, where the subscription response message is used to indicate that the UE moves in or out of the specific area.

In case the UE moves in or out of the specific area, the AN sends a subscription response message to the AMF to instruct the UE to move in or out of the specific area.

Specifically, when the RRC connection is established between the UE and the AN, the AN may acquire the cell where the UE is located, and compare it with the cell included in the specific area, so that the UE may be determined to be in the specific area. Or outside a specific area.

The AN may determine that the UE moves in or out of the specific area by using the following method:

When the UE switches the cell, the AN determines the logic, that is, the AN obtains the cell in which the UE was located from the context of the UE, and then respectively lists the currently located cell and the previously located cell with the cell included in the specific area. Compare. If the previously located cell is in the specific area list, and the currently located cell is not in the specific area list, it is determined that the UE moves out of the specific area, and the AN sends a subscription response message to the AMF; if the previously located cell is not present In the specific area list, and the currently located cell is in the specific area list, it is determined that the UE moves into the specific area, and the AN sends a subscription response message to the AMF; if the previously located cell is in the specific area list, the current location The cell at the location is also in the specific area list, then it is determined that the UE moves within the specific area, and the AN does not send a subscription response message to the AMF; if the previously located cell is not in the specific area list, and the current cell is located Also in the specific area list, it is determined that the UE moves outside the specific area, and the AN does not send a subscription response message to the AMF.

One possible scenario is that the connection between the AN and the UE is in the RRC-inactive state, at which time the RRC connection between the AN and the UE is disconnected, but the connection between the AN and the core network (such as AMF) remains, and AN Keep the context of the UE. At this time, the core network side is not aware of the RRC connection disconnection between the AN and the UE. Therefore, two problems are generated: 1. The AN cannot know the location of the UE in real time (the cell in which it is located); 2. The core network side still sends downlink data to the UE. In this case, before step 305, the method further includes:

The AN receives the downlink data sent to the UE; the AN determines that the UE is in the RRC-inactive state; the AN initiates paging to the UE to establish a connection with the UE; the AN acquires the cell information in which the UE is located, and determines that the UE moves in or Move out of the specific area. The specific method for determining how the UE is in the RRC-inactive state and the AN is initiating paging to the UE to establish a connection with the UE may be implemented by referring to the prior art, which is not limited by the embodiment of the present invention.

When the UE moves out of the LADN service area or moves out of the area that allows the initiation of the communication connection, no data can be transferred between the AN and the UE. However, since the AN cannot detect the location of the UE in real time when the UE is in the RRC-inactive state, the AN cannot detect whether the UE moves out of the LADN service area or removes the area that allows the communication connection to be initiated, and the core network side cannot sense whether the UE moves out of the LADN. The service area or the area that is allowed to initiate a communication connection. Therefore, the AN still receives the downlink data sent to the UE. If the UE has moved out of the LADN service area or moves out of the area that is allowed to initiate a communication connection, the AN needs to discard the downlink data sent to the UE. On the other hand, outside the LADN service area or in an area that is not allowed to initiate a communication connection, the UE prohibits the transmission of uplink data through the connection with the AN. However, sometimes the UE does not follow this rule, and the AN needs to discard the uplink data sent by the UE.

A possible implementation manner is that the AN receives data discarding indication information from an access and mobility management function entity, where the data discarding indication information is used to indicate that the AN is in the case that the UE moves out of the specific area, The downlink data sent to the UE and/or the uplink data sent by the UE are discarded. In order to save the signaling overhead, another possible implementation manner is that, in step 301, the location subscription request sent by the AMF to the AN further includes: data discarding indication information, where the data discarding indication information is used to indicate that the AN moves out of the specific area in the UE. In the case of the downlink data sent to the UE and/or the uplink data sent by the UE.

In a specific implementation, the foregoing data discarding indication information may include a PDU session identifier, such as session identifier A. When the UE moves out of the specific area, when the AN determines that downlink data sent to the UE and/or uplink data sent by the UE is related to a session corresponding to the PDU session identifier, discarding is sent to the UE. The downlink data of the UE and/or the uplink data sent by the UE.

Here, "and/or" means that if the UE receives the downlink data sent to the UE and the uplink data sent by the UE when the UE moves out of the specific area, the downlink data sent to the UE and the uplink data sent by the UE are discarded; If the AN only receives the downlink data sent to the UE, the AN discards the downlink data sent to the UE; if the AN only receives the uplink data sent by the UE, the AN discards the uplink data sent by the UE.

In the data processing method based on the location of the user terminal provided in this embodiment, the AN sends a notification message to the AMF only when the UE moves in or out of the specific area. For example, the core network sends the LADN service area or the service area restrictions of the current UE in the registration area to the RAN, and the RAN sends a notification message when the UE moves in or out of the LADN service area or the area that allows the communication connection to be initiated. Give the core network. In this way, regardless of whether the LADN service area must cross the base station or the base station's service range across the allowed area and the non-allowed area, the AMF can accurately know that the UE moves out, moves into the LADN service area, or allows the area to initiate a communication connection, and resolves the LADN. The area granularity may not match the base station granularity or the service range of the base station is a problem across the allowed area and the non-allowed area, and frequent signaling update between the UE and the base station is avoided, and the amount of information reported by the base station is reduced.

FIG. 4 provides a schematic flowchart of a data processing method based on a location of a user terminal. After the AN receives the data discarding indication information sent by the core network, when the AN receives the uplink data sent by the UE or the downlink data sent to the UE, the AN determines whether the UE is currently in a specific area, if the UE is not in the specific area. Inside, the relevant data is discarded.

Step 401: The AN receives data discarding indication information from the AMF.

The data discarding indication information may be included in the location subscription request described in step 303, or may be as separate signaling. The data discarding indication information may include a PDU session identifier.

Step 403: The AN receives downlink data sent to the UE or uplink data sent by the UE from the core network side.

When the AN receives the data, it is determined according to the PDU session identifier that the data is downlink data sent to the UE or uplink data sent by the UE, so that the AN triggers the determining logic to determine whether the UE moves out of the specific area.

Optionally, before step 401, the method further includes the AN acquiring specific area information from a core network side (such as an AMF). The definition of the specific area refers to the embodiment described in FIG. 3, and details are not described herein again.

Step 405: The AN determines that the UE moves out of the specific area.

The method for determining that the UE moves out of a specific area is the same as that of the embodiment shown in FIG. 3, and details are not described herein again.

Step 407: The AN discards related data.

In the data processing method based on the location of the user terminal provided by the embodiment, when the AN receives the data, it is determined whether the data is related to the PDU session identifier in the data discarding indication information, and if the judgment result is related, the AN is triggered. The logic is determined to determine if the current location of the UE has moved out of a particular area. If a specific area is removed, the data is discarded. With the method of the embodiment of the present invention, when the UE moves out of the specific area, the AN discards the uplink data or the downlink data related to the UE, so that the data transmission of the UE in the specific area can be accurately controlled.

FIG. 5 provides a schematic flowchart of a data processing method based on a location of a user terminal. Without loss of generality, it is assumed that the UE establishes a connection with the source base station (Source gNB) at the previous moment, and after the UE moves (current time), it is within the service range of the target base station (Target gNB).

Step 501: The UE registers with the network and establishes a PDU session.

Specifically, the UE is registered by the source base station and attached to the network.

Step 503: The AMF sends a location subscription request to the source base station, and the AN receives a location subscription request from the AMF.

Step 501 and step 503 are similar to steps 301 and 303 in the embodiment of FIG. 3, please refer to the related description, and no longer utterance.

Step 505: The source base station determines that the UE enters an RRC-inactive state.

When the UE is in the CM-CONNECTED state, the AN may obtain RRC Inactive Assistance information from the core network side (such as AMF), and then the AN determines whether the UE enters the RRC-inactive state according to the RRC-inactive assistance information. The RRC-inactive assistance information may include: a registration area of the UE, a periodic registration update timer, and a UE-specific discontinuous reception (DRX) value. This embodiment does not limit how the AN determines that the UE enters the RRC-inactive state.

Step 507: The source base station receives downlink data sent to the UE from a core network side, such as a User Plane Function (UPF) entity.

Step 509: The AN pages the UE.

Specifically, the source base station in the AN may send a paging request to all base stations (for example, the target base station in FIG. 5) in the AN paging area registered by the UE, and then each base station pages in the respective coverage range. UE. The specific solution of the paging is not limited in the embodiment of the present invention.

Step 511: The UE sends an RRC connection recovery request message to the target base station, where the RRC connection recovery request message carries a recovery identifier (Resume ID) allocated by the source base station to the UE.

The Resume ID contains the identifier of the source base station.

Step 513: After receiving the RRC connection recovery request message sent by the UE, the target base station acquires the identifier of the source base station included in the Resume ID, and further acquires the context data of the UE from the source base station.

The context data of the UE includes the content of the location subscription request in step 503 and the cell identity of the UE at the previous moment.

Step 515: The target base station completes recovery of the RRC connection.

Step 517: Optionally, in order to prevent downlink data loss on the source base station, the destination base station provides a forwarding address to the source base station to obtain downlink data that is sent to the UE.

Step 519: The target base station determines whether downlink data needs to be discarded.

Specifically, the target base station may determine, according to the cell where the UE is currently located, whether the UE is currently in the specific area. When the UE is not in the specific area, and the method performs step 517, the target base station discards the downlink data; otherwise, the destination base station sends the downlink data to the UE. When the UE is not in the specific area, and the method does not perform step 517, the target base station sends a drop indication to the source base station, and the source base station discards the downlink data; otherwise, the target base station acquires downlink data from the source base station, and sends the downlink data to the UE. .

Step 521: The target base station returns a location subscription response message to the AMF.

Specifically, the target base station may determine, according to the context of the UE acquired in step 513, and the cell where the UE is currently located, whether the UE currently moves in or out of the specific area. A location subscription response message is sent to the AMF when it is determined that the UE moves in or out of the particular area.

In the embodiment illustrated in Figures 3-5, the actions of the AMF may be performed by the access and mobility management function entity in accordance with the software modules in the memory mentioned above. The actions of the AN can be performed by the AN in accordance with the software modules in the memory mentioned above. The embodiment of the present invention does not impose any limitation on this.

The solution provided by the embodiment of the present invention is mainly introduced from the perspective of interaction between the network elements. It can be understood that the above-mentioned devices implementing the access network or the access and mobility management function entities include hardware structures and/or software modules corresponding to the execution of the respective functions in order to implement the above functions. Those skilled in the art will readily appreciate that the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The embodiment of the present invention may divide the function module of the access network or the access and mobility management function entity according to the foregoing method example. For example, each function module may be divided according to each function, or two or more functions may be used. Integrated in a processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner. For example, in the case of dividing each functional module by using corresponding functions, FIG. 6 is a schematic diagram showing the possible structure of an access network device involved in the foregoing embodiment. The device 600 includes: a receiving unit 601 and a sending unit 603. .

The receiving unit 601 is configured to receive a location subscription request from an access and mobility management function entity, where the location subscription request is used to indicate that the AN notifies the access if the UE moves in or out of a specific area. And mobility management functional entity access and mobility management functional entities.

The sending unit 603 is configured to send a subscription response message to the access and mobility management function entity, where the subscription response message is used to indicate that the UE moves in or out of the specific area.

In a possible implementation manner, the specific area includes a LADN service area of the UE or an area where the UE allows a communication connection to occur. The location subscription request includes information for indicating the specific area.

Optionally, the access network device further includes a processing unit 605. The receiving unit 601 is further configured to receive downlink data that is sent to the UE, where the processing unit 605 is configured to determine that the UE is in an RRC-inactive state, and the sending unit 603 determines, in the processing unit 605, the If the UE is in the RRC-inactive state, the paging is initiated to the UE to establish a connection with the UE. Further, the processing unit 605 is further configured to acquire the cell information where the UE is located, and determine the location. The UE moves in or out of the specific area.

In a possible implementation manner, the location subscription request received by the receiving unit 601 further includes data discarding indication information, where the data discarding indication information is used to indicate that the AN discards if the UE moves out of the specific area. Downlink data sent to the UE and/or uplink data sent by the UE. Optionally, the data discarding indication information includes a PDU session identifier.

In a possible implementation manner, the receiving unit 601 is further configured to receive data discarding indication information from an access and mobility management function entity, where the processing unit 605 is configured to determine that the UE moves out of a specific area, according to The data discarding indication information received by the receiving unit 601 discards downlink data sent to the UE or uplink data sent by the UE. The specific area includes a LADN service area of the UE or an area where the UE allows a communication connection to occur, and the data discarding indication information includes a PDU session identifier. The processing unit 605 is specifically configured to determine that the downlink data sent to the UE or the uplink data sent by the UE is related to the PDU session, and discard the downlink data sent to the UE or the uplink data sent by the UE. .

FIG. 7 is a schematic diagram showing the possible structure of an access and mobility management function device involved in the foregoing embodiment. The device 700 includes a sending unit 701 and a receiving unit 703.

The sending unit 701 is configured to send a location subscription request to the access network AN, where the subscription request is used to instruct the AN to notify the access and mobility management function entity if the UE moves in or out of a specific area. .

The receiving unit 703 is configured to receive a subscription response message from the base station, where the subscription response message is used to indicate that the UE moves in or out of the specific area.

The specific area includes a LADN service area of the UE or an area where the UE allows a communication connection to occur. Optionally, the location subscription request includes information for indicating the specific area.

In a possible implementation manner, the location subscription request further includes: data discarding indication information, where the data discarding indication information is used to indicate that the AN sends the discarding to the UE if the UE moves out of the specific area. Downlink data of the UE and/or uplink data sent by the UE. The data discarding indication information further includes a PDU session identifier. Optionally, the data discarding indication information may also be sent to the AN by the sending unit 701 as a message that is independent of the location subscription request.

The access network device and the access and mobility management function device can be implemented in an integrated circuit (IC), a radio frequency integrated circuit (RFIC), a printed circuit board (PCB). ) Wait. At the same time, the device can be either a stand-alone device or a part of a larger device. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.

In this embodiment, the device for implementing data processing based on the location of the user terminal is presented in the form of dividing each functional module corresponding to each function, or the device for implementing data processing based on the location of the user terminal divides each of the devices in an integrated manner. The form of the function module is presented. A "module" herein may refer to an application-specific integrated circuit (ASIC), circuitry, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other functions that provide the functionality described above. Device. In a simple embodiment, those skilled in the art will appreciate that the access network device 600 and the access and mobility management function device 700 can be implemented in the form shown in FIG.

FIG. 8 shows a data processing system based on user terminal location involved in the above embodiment. The system includes an access network device 801 and an access and mobility management function device 803.

The function of the access network device 801 is as described in the embodiment of FIG. 6, and the access and mobility management function device 803 is as described in the embodiment of FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the entities in the system, and details are not described herein again.

The embodiment of the present invention further provides a computer storage medium for storing computer software instructions used in the implementation device shown in FIG. 6 or FIG. 7 above, which includes a program designed to execute the foregoing method embodiments. By executing the stored procedure, the AN can report the location of the UE when the UE moves in or out of a specific area, and the location between the different cells in the specific area does not need to report the location, thereby reducing the number of location information reported by the AN. In addition, the transmission and reception of uplink and downlink data about the UE can also be controlled by monitoring the location of the UE.

Although the present invention has been described herein in connection with the embodiments of the present invention, it will be understood by those skilled in the <RTIgt; Other variations of the disclosed embodiments are achieved. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code. The computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of the methods, apparatus, and computer program products of the embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the invention has been described with respect to the specific embodiments and embodiments thereof, various modifications and combinations may be made without departing from the spirit and scope of the invention. Accordingly, the specification and drawings are to be construed as the It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (25)

A data transmission method based on user equipment UE location, characterized in that it comprises: The access network AN receives a location subscription request from an access and mobility management function entity, the location subscription request being used to instruct the AN to notify the access and mobility if the UE moves in or out of a particular area Management function entity; The AN sends a subscription response message to the access and mobility management function entity, the subscription response message is used to indicate that the UE moves in or out of the specific area. The method of claim 1, wherein the specific area comprises a LADN service area of the UE or an area in which the UE allows a communication connection to occur. The method of claim 1-2, wherein the location subscription request includes information for indicating the particular area. The method of any of claims 1-3, wherein before the sending the subscription response message to the access and mobility management function entity, the method further comprises: Receiving, by the AN, downlink data sent to the UE; The AN determines that the UE is in an RRC-inactive state; The AN initiates paging to the UE to establish a connection with the UE; The AN determines that the UE moves in or out of the particular area. The method according to any one of claims 1-4, wherein the location subscription request further includes: data discarding indication information, where the data discarding indication information is used to indicate that the AN moves out of the specific area by the UE. Down, the downlink data sent to the UE and/or the uplink data sent by the UE are discarded. The method according to any one of claims 1-4, wherein the method further comprises: the AN receiving data discarding indication information from an access and mobility management function entity; the data discarding indication information being used to indicate an AN And transmitting, in the case that the UE moves out of the specific area, downlink data sent to the UE and/or uplink data sent by the UE. The method of claim 5 or 6, wherein the data discarding indication information further includes a PDU session identifier. A data transmission method based on user equipment UE location, characterized in that it comprises: The access and mobility management function entity sends a location subscription request to the access network AN, the subscription request is used to instruct the AN to notify the access and mobility management function if the UE moves in or out of a specific area entity; The access and mobility management function entity receives a subscription response message from the base station, and the subscription response message is used to indicate that the UE moves in or out of the specific area. The method of claim 8, wherein the specific area comprises a LADN service area of the UE or an area in which the UE allows a communication connection to occur. The method of claims 8-9, wherein the location subscription request includes information for indicating the particular area. The method according to any one of claims 7 to 10, wherein the location subscription request further includes: data discarding indication information, where the data discarding indication information is used to indicate that the AN moves out of the specific area in the UE In the case of the downlink data sent to the UE and/or the uplink data sent by the UE. The method according to any one of claims 7 to 10, wherein the method further comprises: the access and mobility management function entity transmitting data discarding indication information to the AN; And instructing the AN to discard the downlink data sent to the UE and/or the uplink data sent by the UE, when the UE moves out of the specific area. The method of claim 11 or 12, wherein the data discarding indication information further includes a PDU session identifier. An access network device, comprising: a receiving unit, configured to receive a location subscription request from an access and mobility management function entity, where the location subscription request is used to indicate that the AN notifies the access and mobility if the UE moves in or out of a specific area Management function entity; And a sending unit, configured to send a subscription response message, where the subscription response message is used to indicate that the UE moves in or out of the specific area. The apparatus of claim 14, wherein the specific area comprises a LADN service area of the UE or an area in which the UE allows a communication connection to occur. The apparatus according to claim 14 or 15, wherein said location subscription request includes information for indicating said specific area. The apparatus according to any one of claims 14-16, wherein said apparatus further comprises a processing unit, before said transmitting unit sends a subscription response message to the access and mobility management function entity, The receiving unit is further configured to receive downlink data that is sent to the UE; The processing unit is configured to determine that the UE is in an RRC-inactive state; The sending unit is further configured to initiate paging to the UE to establish a connection with the UE; The processing unit is further configured to determine that the UE moves in or out of the specific area. The apparatus according to any one of claims 14-17, wherein the receiving unit is further configured to receive data discarding indication information from an access and mobility management function entity; the data discarding indication information is used to indicate an AN And transmitting, in the case that the UE moves out of the specific area, downlink data sent to the UE and/or uplink data sent by the UE. The apparatus according to claim 18, wherein the data discarding indication information further comprises a PDU session identifier. An access and mobility control device, characterized in that the device comprises: a sending unit, configured to send a location subscription request to the access network AN, where the subscription request is used to indicate that the AN notifies the access and mobility management function entity if the UE moves in or out of a specific area; And a receiving unit, configured to receive a subscription response message from the base station, where the subscription response message is used to indicate that the UE moves in or out of the specific area. The apparatus of claim 20, wherein the specific area comprises a LADN service area of the UE or an area in which the UE allows a communication connection to occur. The device according to claim 20 or 21, wherein the location subscription request further includes: data discarding indication information, where the data discarding indication information is used to indicate that the AN moves out of the specific area by the UE. Down, the downlink data sent to the UE and/or the uplink data sent by the UE are discarded. The device according to claim 20 or 21, wherein the sending unit is further configured to send data discarding indication information to the AN, where the data discarding indication information is used to indicate that the AN moves out of the UE In the case of a specific area, the downlink data sent to the UE and/or the uplink data sent by the UE are discarded. The device according to claim 22 or 23, wherein the data discarding indication information further includes a PDU session identifier. A data processing system based on user terminal location, comprising the access network device of claims 14-19 and the access and mobility control device of claims 20-24.

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