WO2016034018A1 - Method, device and home subscriber server for device to device service recovery - Google Patents

Abstract

A method, device and Home Subscriber Server (HSS) for device to device service recovery are disclosed in the present invention. The method comprises that: after reboot, the HSS receives a user location data update request message transmitted by a first MME; and the HSS transmits an insert user location data message to a near field communication server, and the insert user location data message carries user location data related to a near field communication service. The present invention solves the problem in the related art of a communication policy of the near field communication server being caused to be inaccurate after the reboot of the HSS, and the accuracy and real-time capability of the communication policy of the near field communication server are improved, and a large amount of signaling resources do not need to be occupied and an HSS overload situation is avoided.

Description

Method, device and home subscriber server for device-to-device service recovery Technical field

The present invention relates to the field of communications, and in particular, to a device-to-device (D2D) service recovery method and device, and a Home Subscriber Server (HSS).

Background technique

Direct communication between devices in the vicinity using Device to Device (D2D for short) can bring many benefits to the terminal, such as higher speed, lower latency and lower power consumption, and greatly improved. The wireless resource efficiency of the operator, the D2D Relay mode is beneficial to the operator to improve the wireless coverage; for the application, the neighboring information in the D2D communication process can be used to develop a more attractive new service. The Public Safety system can also use D2D technology to enable communication between terminals without wireless coverage.

FIG. 1 is a schematic diagram of a D2D architecture related to 3GPP according to the related art. As shown in FIG. 1, the functions of the key network elements are as follows:

Terminal: User equipment (User Equipment, UE for short) is used to support the direct discovery of the other party through the air interface between the terminal and the terminal, and does not need to communicate directly through the network.

The core network gateway: also called the Packet Data Network Gateway (PDN GW), is configured to provide the access point for the terminal to access the PDN network. The main functions include assigning an IP address to the terminal and sending the terminal up. The data packets are forwarded to the corresponding PDN network through IP, and the data packets sent from the PDN network are mapped to different bearers according to different flows, and then sent to the terminal.

The Home Subscriber Server (HSS) is located on the home network. The main function is to provide subscription information and authentication information for users and applications.

A proximity communication server (Prose function), which is located outside the PDN GW. The main functions include D2D service authorization, temporary code allocation for terminal request for terminal broadcast, assistance in D2D discovery, and billing. Currently, a public land mobile network (PLMN) only deploys a short-range communication server.

FIG. 2 is a schematic diagram of a D2D service authorization process according to the related art. As shown in FIG. 2, the process includes the following steps:

Step S202, a connection is established between the terminal and the PDN GW, and after the user IP address is obtained from the PDN GW, an authorization request is sent to the home short-range communication server. The terminal queries the corresponding IP address through the DNS according to the Fully Qualified Domain Name (FQDN) of the home proximity communication server, and then communicates with the address. The FQDN of the home proximity communication server may be statically configured in the terminal or may be derived from the home PLMN ID. The IP address of the belonging proximity communication server can also be configured in the terminal. The authorization message includes the PLMN information and the user identifier IMSI currently hosted by the user;

Step S204, if there is no user subscription information in the home proximity communication server, the home proximity communication server requests the user subscription information to the home subscriber server, and the request carries the subscriber identity IMSI;

Step S206, after the belonging short-distance communication server acquires the subscription information, it is stored in the local database;

Step S208: The home proximity communication server needs to obtain authorization information from the local/visited proximity communication server according to the obtained PLMN list.

Step S210, the local/visit proximity communication server returns an authorization response;

Step S212, the home proximity communication server returns the D2D authorization information of the user according to the user subscription information and the local configuration, and the authorization information includes: a PLMN list that fully authorizes the D2D service and a local PLMN list of the current location of the user;

If it is necessary to authorize a plurality of local/visited proximity communication servers in step S208, the steps of S208-S210 are repeated.

After that, the terminal will decide whether to initiate D2D service according to the authorization result.

FIG. 3 is a schematic diagram of a process of acquiring user data from an HSS according to a mobility management unit (Mobility Management Entity, MME, also referred to as a mobility management entity) and a prose function according to the related art, as shown in FIG. 3, in an actual network. HSS may restart due to system instability or upgrade. After the HSS restarts, the mobility management unit and the Prose function set the user data to be unreliable. When the UE actively contacts the mobility management unit or the Prose function, the mobility management unit and the Prose function need to acquire user data from the HSS. However, after the mobility management unit receives the Non Access Stratum (NAS) message sent by the UE, the mobility management unit can acquire user data from the HSS, so that the UE can perform normal D2D communication. But the UE does not need to send a message to the Prose function, so The Prose function does not actively acquire data from the HSS, which causes the Prose function to be notified when the user data changes. This also causes the D2D communication strategy to be inaccurate; on the other hand, if the Prose function does not receive the UE. The sent message actively acquires data from the HSS, and it is also easy to cause the HSS to be overloaded.

In view of the inaccuracy of the strategy that may cause the communication of the short-range communication server after the HSS restart in the related art, an effective solution has not been proposed yet.

Summary of the invention

The embodiments of the present invention provide a device-to-device service recovery method and device, and a home subscriber server, to at least solve the problem that the policy of the related art may cause the communication of the short-range communication server to be inaccurate after the HSS restarts.

According to an embodiment of the present invention, a device-to-device D2D service recovery method is provided, including: after a home subscriber server HSS restarts, receiving a location data update request message sent by a first mobility management unit MME; The HSS sends an Insert User Location Data message to the Near Field Communication Server, where the Insert User Location Data message carries user location data related to the proximity communication service.

In this embodiment, before the HSS sends the insertion user location data message to the proximity communication server, the method further includes: the HSS parsing the address of the corresponding proximity communication server according to the identifier of the user, where The near field communication server address is used by the HSS to send the inserted user location data message to the proximity communication server.

In this embodiment, before the HSS sends the insert user location data message to the proximity communication server, the method further includes: the HSS determining whether to send the insert user location data message to the proximity communication server.

In this embodiment, the HSS determines whether the sending the user location data message to the proximity communication server includes at least one of the following: the HSS determines whether the user uses the D2D service in the current public land mobile network PLMN, If yes, sending the insertion user location data message to the proximity communication server; the HSS determining whether the received location data update request message carries a recovery indication, and if so, to the proximity communication server The insert user location data message is sent.

In this embodiment, when the user location data is set to be unavailable in the first MME, and the user is allowed to use the D2D service, the location data update request message carries the recovery indication.

In this embodiment, in the case that the user is handed over from the first MME to the second MME for registration, the recovery indication is carried by the first MME to the second MME in the context acquisition process.

In this embodiment, the location data update request message includes: location information of the user, where the location information includes a PLMN identity ID where the user is located.

According to another embodiment of the present invention, a device-to-device D2D service recovery device is located in the home subscriber server HSS, and includes: a receiving module, configured to receive, after the home subscriber server HSS restarts, the mobility management unit MME to send a location data update request message of the user; the sending module is configured to send an insert user location data message to the proximity communication server, where the inserted user location data message carries user data related to the short-range communication service, so that the proximity communication server updates Related user location data.

In this embodiment, the apparatus further includes: a parsing module, configured to parse the address of the corresponding short-range communication server according to the identifier of the user, where an address of the short-range communication server is used for the HSS The inserted user location data message is sent to the proximity communication server.

In this embodiment, the apparatus further includes: a determining module, configured to determine whether to send an insert user location data message to the proximity communication server.

In this embodiment, the determining module includes at least one of the following: a first determining unit, configured to determine whether the user uses a D2D service in a current public land mobile network PLMN, and if yes, to the short-range communication The server sends the inserted user location data message; the second determining unit is configured to determine whether the received location data update request message carries a recovery indication, and if yes, send the inserted user location to the proximity communication server Data message.

In this embodiment, the location update request message includes: location information of the user, where the location information includes a PLMN identity ID where the user is located.

According to still another embodiment of the present invention, there is further provided a home subscriber server HSS, including the apparatus for device-to-device D2D service recovery described above.

After the HSS is restarted, the location data update request message of the user sent by the first MME is received; the HSS sends an insert user location data message to the proximity communication server, where the inserted user location data message is carried. The method of user location data related to the short-distance communication service solves the problem that the strategy of the short-distance communication server communication may be inaccurate after the HSS restarts in the related art, and improves the accuracy and real-time performance of the communication strategy of the short-range communication server, and There is no need to occupy a large amount of signaling resources, and the situation that causes the HSS to be overloaded is avoided.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a D2D architecture related to 3GPP according to the related art;

2 is a schematic diagram of a D2D service authorization process according to the related art;

3 is a schematic diagram of a process of acquiring user data to an HSS by a mobility management unit and a prose function according to the related art;

4 is a flowchart of a method for D2D service recovery according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of an apparatus for D2D service recovery according to an embodiment of the present invention; FIG.

6 is a structural block diagram of an HSS according to an embodiment of the present invention;

7 is a flow chart of a method for D2D service recovery according to a preferred embodiment of the present invention;

FIG. 8 is a first schematic flowchart of a specific implementation process according to a preferred embodiment of the present invention; FIG.

9 is a second schematic diagram of a process of a specific implementation process in accordance with a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a method for D2D service recovery is provided. FIG. 4 is a flowchart of a method for D2D service recovery according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

Step S402, after the HSS restarts, receiving a location data update request message of the user sent by the first MME;

Step S404, the HSS sends an insertion user location data message to the proximity communication server (prose function), where the insertion user location data message carries user location data related to the short-range communication service.

After the HSS restarts and receives the location update request message sent by the first MME, the embodiment sends an insert user location data message to the corresponding short-range communication server, where the inserted user location data message carries the short-range communication service. Relevant user location data, so that the proximity communication server can also update related user location data in time, and solve the problem that the strategy of the proximity communication server communication may be inaccurate after the HSS restart in the related art, and the proximity communication server is improved. The accuracy and real-time performance of the communication strategy, and does not need to occupy a large amount of signaling resources, and avoids the situation that causes the HSS to be overloaded.

In this embodiment, before the HSS sends the inserted user location data message to the short-range communication server, the HSS may be parsed according to the identifier of the user (for example, International Mobile Subscriber Identity, IMSI). And an address of the corresponding short-range communication server, wherein the near-field communication server address is used by the HSS to send the inserted user location data message to the proximity communication server.

In this embodiment, before the HSS of step S404 sends the insertion user location data message to the proximity communication server, the HSS may determine whether to send the insertion user location data message to the proximity communication server. Specifically, the following two methods for determining the HSS are provided in this embodiment:

Manner 1: The HSS may determine whether to send the inserted user location data message to the proximity communication server according to whether the user uses the D2D service in the current PLMN, for example, if the user is in the current PLMN. Using the D2D service, sending the inserted user location data message to the proximity communication server, otherwise not transmitting;

Manner 2: The HSS may further determine, according to the received location data update request message, whether to carry a recovery indication, to determine whether to send the inserted user location data message to the proximity communication server, for example, if received The location update request message carries a recovery indication, and the inserted user location data message is sent to the proximity communication server, otherwise it is not sent.

The recovery indication may be carried in the location data update request message if the user location data location is unavailable in the first MME and the user is allowed to use the D2D service. And when the UE is registered in a new MME (the destination MME, referred to herein as the second MME), for example, if the user switches from the first MME to the second MME to register, the recovery indication may be from the original The MME (first MME) is carried to the destination MME (second MME) in the context acquisition process.

In this embodiment, the location data update request message may include location information of the user, where the location information includes a PLMN identity (PLMN ID) where the user is located.

Corresponding to the foregoing method, in the embodiment, a device for recovering the D2D service is also provided, which is located in the HSS, and the device is configured to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 5 is a structural block diagram of an apparatus for D2D service recovery according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes: a receiving module 52 and a sending module 54, and each module is described in detail below:

The receiving module 52 is configured to: after the HSS restarts, receive a location data update request message sent by the MME; the sending module 54 is connected to the receiving module 52, and is configured to send an insert user location data message to the proximity communication server, where The inserted user location data message carries user location data related to the short-range communication service.

In this embodiment, the device may further include a parsing module, and is connected to the sending module 54 and configured to parse an address of the corresponding short-range communication server according to the identifier of the user, where the short-distance communication server address is used for The HSS transmits the Insert User Location Data message to the proximity communication server.

In this embodiment, the apparatus may further include: a determining module, connected to the receiving module 52, and the sending module 54, and configured to determine whether to send the inserted user location data message to the proximity communication server.

In this embodiment, the determining module may include at least one of the following: a first determining unit, configured to determine whether the user uses a D2D service in a current public land mobile network (PLMN), and if yes, to the The short-distance communication server sends the inserted user location data message; the second determining unit is configured to determine whether the received location data update request message carries a recovery indication, and if yes, send the to the proximity communication server Insert user location data message.

In this embodiment, the location update request message includes: location information of the user, where the location information may include a PLMN ID where the user is located.

In this embodiment, an HSS is also provided. FIG. 6 is a structural block diagram of an HSS according to an embodiment of the present invention. As shown in FIG. 6, the HSS includes a device for D2D service recovery as shown in FIG. 5.

The following description is made in conjunction with the preferred embodiments, and the following preferred embodiments incorporate the above-described embodiments and preferred embodiments thereof.

In a preferred embodiment, a method and apparatus for near field communication service recovery, an HSS, is provided, wherein the method specifically includes: receiving a location update request message from a mobility management unit (also referred to as location data) After the new request message, the HSS sends an Insert User Data message (also called a User Location Data Message) to the Prose function, which carries the user data (also called user location data) related to the Prose service.

Further, the HSS determines whether to send an Insert User Data message to the Prose function according to whether the user uses the D2D service in the current PLMN.

Further, the location update request message carries a recovery indication; the recovery indication is set to instruct the HSS to send an insert user data message to the Prose function.

Further, the location update request message carries the location information of the user, where the location information includes the PLMN ID of the user.

Further, the recovery indication is set according to user data in the mobility management unit being unreliable and the user is allowed to use the D2D service.

Further, if the UE registers with the new mobility management unit, the recovery indication is carried by the original mobility management unit to the destination mobility management unit during the context acquisition process.

The HSS for D2D service recovery provided in the preferred embodiment includes:

Receiving a location update request message from the mobility management unit, and sending an insert user data message to a Prose function, where the message carries user data related to the Prose service;

Further, the location update request message carries a recovery indication; the recovery indication is set to instruct the HSS to send an insert user data message to the Prose function.

The method and apparatus for service recovery provided by the preferred embodiment are described in detail below with reference to the accompanying drawings.

FIG. 7 is a flowchart of a method for D2D service recovery according to a preferred embodiment of the present invention. As shown in FIG. 7, the process includes the following steps:

Step S702, after the HSS restarts, sending a restart message to the mobility management unit Prose function, the mobility management unit and the Prose function respectively setting the user data to be unreliable; when the mobility management unit receives the non-access stratum (NAS) message of the UE, The mobility management unit sends a location update request message to the HSS, where the request message carries a recovery indication. The recovery indication is that the mobility management unit is configured according to the unreliable flag of the user data and whether the user is allowed to use the D2D service, and the request message may also be carried. The PLMN ID that the user is currently camping on;

Step S704, the HSS parses the address corresponding to the prose function according to the identifier of the user IMSI; if the location update request message does not carry the recovery indication in step S702, the HSS may also be based on whether the user is currently The PL2 uses the D2D service to determine whether to send the insert user data message to the Prose function. If the user can use the D2D service in the current PLMN, the HSS can send the insert user data message to the Prose function, and vice versa;

Step S706, the HSS sends an insert user data message to the prose function, and the Prose function sets the user data to be authenticated after receiving the insert user data message.

FIG. 8 is a first schematic flowchart of a specific implementation process according to a preferred embodiment of the present invention. The schematic diagram is a flow chart in which the mobility management unit registered by the UE does not change. As shown in FIG. 8, the process includes the following steps:

Step S802, after the HSS restarts, sending a restart message to the MME.

Step S804, after the HSS restarts, sending a restart message to the Prose function;

Step S806, the MME sets the user data to be unreliable;

Step S808, the Prose function sets the user data to be unreliable;

Step S810, the MME receives the NAS message sent by the user, and the NAS message includes a Tracking Area Update (TAU request message, a service request message;

Step S812, the MME sends a location update request message to the HSS, where the request message carries a recovery indication. The recovery indication is that the mobility management unit is configured according to the unreliable flag of the user data and whether the user is allowed to use the D2D service, and the request message may also be carried. The PLMN ID that the user is currently camping on;

Step S814, the HSS sends a location update confirmation message to the MME, and the MME sets the user data to be authenticated.

In step S816, because a PLMN only deploys a Prose function, the HSS can parse the address corresponding to the Prose function according to the user IMSI identifier, and the HSS sends an insert user data request to the Prose function; if the location update request message does not carry the recovery indication in step S812 The HSS may also decide whether to send the insert user data message to the Prose function according to whether the user uses the D2D service in the current PLMN. If the user can use the D2D service in the current PLMN, the HSS may send the insert user data message to the Prose function, and vice versa. Not sent;

Step S818, the Prose function returns an Insert User Data Response message to the HSS, and sets the user data to authenticated.

FIG. 9 is a second schematic flowchart of a specific implementation process according to a preferred embodiment of the present invention. The schematic diagram is a flowchart of a change of a mobility management unit registered by a UE. As shown in FIG. 9, the process includes the following steps:

Step S902, after the HSS restarts, sending a restart message to the MME.

Step S904, after the HSS restarts, sending a restart message to the Prose function;

Step S906, the MME sets the user data to be unreliable;

Step S908, the Prose function sets the user data to be unreliable;

In step S910, the MME receives the TAU request message sent by the user, and the TAU request message carries the global unique temporary identity (GUTI;

Step S912: The new MME obtains the address of the original MME according to the GUTI, and sends a context acquisition request message to the original MME to obtain the user context and the bearer context.

Step S914, the original MME carries the recovery indication to the new MME in the context acquisition process;

Specifically, the original MME sends a context response message to the new MME, where the response message carries the user context and the bearer context. The response message further carries a recovery indication or the user message is unreliable and the user is allowed to use the D2D service information; the new MME can determine the recovery according to the unreliable user data carried by the original MME and the D2D service information allowed by the user. Instruction

Step S916, the new MME returns a context confirmation message to the original MME.

Step S918, the MME sends a location update request message to the HSS, where the request message can carry a recovery indication.

The recovery indication is determined by the new MME or carried by the original MME, and the request message may further carry the PLMN ID that the user is currently camping on;

Step S920, the HSS sends a location update confirmation message to the MME, and the MME sets the user data to be authenticated.

Step S922, the HSS sends an insert user data request to the Prose function;

Specifically, because only one Prose function is deployed in one PLMN, the HSS can parse the address corresponding to the Prose function according to the IMSI identifier of the user, and the HSS sends an insert user data request to the Prose function. If the location update request message does not carry the recovery indication in step S918, the HSS may also determine whether to send the insert user data message to the Prose function according to whether the user uses the D2D service in the current PLMN. If the user can use the D2D service in the current PLMN, the HSS may send an insert user data message to the Prose function, and vice versa;

Step S924, the Prose function returns an Insert User Data Response message to the HSS, and sets the user data to authenticated.

In another embodiment, a software is provided that is configured to perform the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, a storage medium is also provided, in which the above software is stored, including but not limited to an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the device-to-device service recovery method and device and the home subscriber server provided by the embodiments of the present invention have the following beneficial effects: the inaccurate strategy of the proximity communication server communication may be solved after the HSS restart in the related art. The problem improves the accuracy and real-time performance of the communication strategy of the short-range communication server, and does not need to occupy a large amount of signaling resources, thereby avoiding the situation that causes the HSS to be overloaded.

Claims (13)

A device-to-device D2D service recovery method includes: After the home subscriber server HSS restarts, receiving a location data update request message of the user sent by the first mobility management unit MME; The HSS sends an Insert User Location Data message to the Near Field Communication Server, where the Insert User Location Data message carries user location data related to the proximity communication service. The method of claim 1, wherein before the HSS sends the insert user location data message to the proximity communication server, the method further comprises: Determining, by the HSS, an address of the corresponding proximity communication server according to the identifier of the user, where the proximity communication server address is used by the HSS to send the inserted user location data to the proximity communication server Message. The method of claim 1, wherein before the HSS sends the insert user location data message to the proximity communication server, the method further comprises: The HSS determines whether to send an Insert User Location Data message to the proximity communication server. The method of claim 3, wherein the HSS determines whether to send the Insert User Location Data message to the Near Field Communication Server comprises at least one of the following: Determining, by the HSS, whether the user uses a D2D service in a current public land mobile network PLMN, and if yes, transmitting the inserted user location data message to the proximity communication server; The HSS determines whether the received location data update request message carries a recovery indication, and if so, sends the inserted user location data message to the proximity communication server. The method of claim 4, wherein In the case that the user location data is set to be unavailable in the first MME, and the user is allowed to use the D2D service, the location data update request message carries the recovery indication. The method of claim 4, wherein And in the case that the user is handed over from the first MME to the second MME for registration, the recovery indication is carried by the first MME to the second MME in a context acquisition process. The method according to any one of claims 1 to 5, wherein the location data update request message includes: location information of the user, wherein The location information includes a PLMN identity ID where the user is located. A device-to-device D2D service recovery device is located in the home subscriber server HSS, and includes: The receiving module is configured to receive, after the home subscriber server HSS restarts, a location data update request message of the user sent by the mobility management unit MME; The sending module is configured to send an insert user location data message to the proximity communication server, where the inserted user location data message carries user data related to the short-range communication service, so that the proximity communication server updates the relevant user location data. The apparatus of claim 8 wherein said apparatus further comprises: a parsing module configured to parse a corresponding address of the proximity communication server according to an identifier of the user, wherein an address of the proximity communication server is used by the HSS to send the insertion to the proximity communication server User location data message. The apparatus of claim 8 wherein said apparatus further comprises: The determining module is configured to determine whether to send an insert user location data message to the proximity communication server. The apparatus of claim 10, wherein the determining module comprises at least one of the following: a first determining unit, configured to determine whether the user uses a D2D service in a current public land mobile network PLMN, and if yes, send the inserted user location data message to the proximity communication server; The second determining unit is configured to determine whether the received location data update request message carries a recovery indication, and if yes, send the inserted user location data message to the proximity communication server. The device according to any one of claims 8 to 11, wherein the location update request message includes: location information of the user, wherein The location information includes a PLMN identity ID where the user is located. A home subscriber server HSS comprising the device to device D2D service recovery device according to any one of claims 8 to 12.

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