CN105430591B

CN105430591B - Method and device for recovering device-to-device service and home subscriber server

Info

Publication number: CN105430591B
Application number: CN201410452182.6A
Authority: CN
Inventors: 卢飞; 朱进国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2014-09-05
Filing date: 2014-09-05
Publication date: 2019-12-06
Anticipated expiration: 2034-09-05
Also published as: CN105430591A; WO2016034018A1

Abstract

The invention discloses a method and a device for recovering equipment-to-equipment service and a home subscriber server, wherein the method comprises the following steps: after HSS is restarted, receiving a user position data updating request message sent by a first MME; and the HSS sends a user position data inserting message to the near field communication server, wherein the user position data inserting message carries user position data related to the near field communication service. The method and the device solve the problem that the communication strategy of the near field communication server is inaccurate after the HSS is restarted in the related technology, improve the accuracy and the real-time performance of the communication strategy of the near field communication server, do not need to occupy a large amount of signaling resources, and avoid the condition of overloading the HSS.

Description

Method and device for recovering device-to-device service and home subscriber server

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for Device to Device (D2D for short) service recovery, and a Home Subscriber Server (HSS for short).

background

terminals in a neighboring area can bring many benefits to the terminals by using direct Device-to-Device (D2D) communication, such as higher speed, lower delay and less power consumption, and also greatly improve radio resource efficiency of an operator, and the Relay mode of D2D is beneficial to the operator to improve radio coverage; for application, new attractive services can be developed by using the proximity information in the D2D communication process. Public Safety (Public Safety) systems may also utilize D2D technology to enable communication between terminals without wireless coverage.

fig. 1 is a schematic diagram of a D2D architecture related to 3GPP in the related art, and as shown in fig. 1, the functions of the important network elements are described as follows:

a terminal: also called User Equipment (UE for short), supports direct discovery of the other party between the terminal and the terminal through an air interface, and does not need to directly communicate through a network.

a core network gateway: the PDN Gateway is also called a Packet Data Network Gateway (PDN GW), and is configured to provide an access point for accessing a PDN Network for a terminal, where the PDN Gateway has a main function of allocating an IP address to the terminal, forwarding a Data Packet sent from the terminal to a corresponding PDN Network through IP, mapping the Data Packet sent from the PDN Network to different bearers (bearer) according to different flows (flows), and then sending the Data Packet to the terminal.

A Home Subscriber Server (HSS for short) is located in a Home network, and mainly functions to provide subscription information and authentication information of users and applications.

And a near field communication server (proximity function), which is located outside the PDN GW and has main functions including D2D service authorization, allocating temporary codes to applications requested by the terminal for terminal broadcasting, assisting D2D discovery, charging, and the like. Currently, only one short-range communication server is deployed in a Public Land Mobile Network (PLMN).

Fig. 2 is a schematic diagram of a D2D service authorization process according to the related art, and as shown in fig. 2, the process includes the following steps:

step S202, the connection is established between the terminal and the PDN GW, and after the IP address of the user is obtained from the PDN GW, an authorization request is sent to the home near field communication server. The terminal inquires a corresponding IP address through a DNS according to a Fully Qualified Domain Name/Fully Qualified Domain Name (FQDN) of a home near field communication server, and then communicates with the address. The FQDN of the home nfc server may be statically configured in the terminal or may be derived from the home PLMN ID. The IP address of the home near field communication server may also be configured in the terminal. The authorization message contains PLMN information and user identification IMSI where the user resides currently;

Step S204, if the home near field communication server has no user subscription information, the home near field communication server requests the user subscription information from the home user server, and the request has the user identification IMSI;

step S206, the home near field communication server acquires the signing information and stores the signing information in a local database;

step S208, the home near field communication server needs to acquire authorization information from the local/visiting near field communication server according to the acquired PLMN list;

step S210, the local/visit near field communication server returns an authorization response;

Step S212, according to the user subscription information and the local configuration, the home nfc server returns the D2D authorization information of the user, where the authorization information includes information: a PLMN list allowing D2D service and a local PLMN list of the current position of the user are authorized completely;

if authorization is required to multiple local/visitor near field communication servers in step S208, the steps of S208-S210 are repeated.

The terminal will then decide whether to initiate D2D traffic based on the authorization result.

Fig. 3 is a schematic diagram illustrating a process of respectively acquiring user data from an HSS according to a Mobility Management Entity (MME) and a protocol function in the related art, where, as shown in fig. 3, in an actual network, the HSS may be restarted due to system instability or upgrade. After the HSS is restarted, the mobility management unit and the se function set user data unreliable, and when the UE actively contacts the mobility management unit or the se function, the mobility management unit and the se function need to acquire the user data from the HSS. However, after the mobility management unit receives a Non Access Stratum (NAS) message sent by the UE, the mobility management unit may obtain the user data from the HSS, so that the UE can communicate with D2D normally. However, the UE does not need to send a message to the se function, so the se function does not actively acquire data from the HSS, which results in that the se function cannot be notified when the user data changes, and thus the D2D communication policy is inaccurate; on the other hand, if the message sent by the UE is not received by the se function, the data is actively acquired to the HSS, which also easily causes the HSS to be overloaded.

aiming at the problem that strategies for communication of a near field communication server are inaccurate after HSS is restarted in the related art, no effective solution is provided at present.

Disclosure of Invention

The invention provides a method and a device for recovering device-to-device services and a home subscriber server, which are used for at least solving the problem that the strategy of near field communication server communication is inaccurate after HSS (home subscriber server) is restarted in the related art.

according to an embodiment of the present invention, there is provided a device-to-device D2D traffic recovery method, including: after a Home Subscriber Server (HSS) is restarted, receiving a location data updating request message of a user, which is sent by a first mobility management unit (MME); and the HSS sends a user position data inserting message to the near field communication server, wherein the user position data inserting message carries user position data related to the near field communication service.

In this embodiment, before the HSS sends the message of inserting the user location data to the near field communication server, the method further includes: and the HSS analyzes the corresponding address of the near field communication server according to the identification of the user, wherein the address of the near field communication server is used for the HSS to send the user position data inserting message to the near field communication server.

in this embodiment, before the HSS sends the message of inserting the user location data to the near field communication server, the method further includes: the HSS determines whether to send an insert user location data message to the near field communication server.

In this embodiment, the HSS determining whether to send the message of inserting the user location data to the near field communication server includes at least one of: the HSS judges whether the user uses a D2D service in the current Public Land Mobile Network (PLMN), if so, the HSS sends the message of inserting the user position data to the short-range communication server; and the HSS judges whether the received position data updating request message carries a recovery indication, and if so, the HSS sends the user position data inserting message to the near field communication server.

In this embodiment, in the case that the user location data in the first MME is set as unavailable and the user allows the D2D service to be used, the location data update request message carries the recovery indication.

In this embodiment, when the user is switched from a first MME to a second MME for registration, the recovery indication is carried to the second MME by the first MME in a context acquisition process.

in this embodiment, the location data update request message includes: and the position information of the user comprises PLMN identification ID where the user is located.

According to another embodiment of the present invention, an apparatus for device-to-device D2D service restoration, located in a home subscriber server HSS, comprises: a receiving module, configured to receive a location data update request message of a user sent by a mobility management unit MME after a home subscriber server HSS is restarted; and the sending module is used for sending a user inserting position data message to the near field communication server, wherein the user inserting position data message carries user data related to the near field communication service, so that the near field communication server updates the related user position data.

In this embodiment, the apparatus further includes: and the analysis module is used for analyzing the corresponding address of the near field communication server according to the identification of the user, wherein the address of the near field communication server is used for the HSS to send the user position data inserting message to the near field communication server.

In this embodiment, the apparatus further includes: and the judging module is used for judging whether to send the message of inserting the user position data to the near field communication server.

in this embodiment, the determining module includes at least one of: a first judging unit, configured to judge whether the user uses a D2D service in a current public land mobile network PLMN, and if so, send the insert user location data message to the near field communication server; and a second judging unit, configured to judge whether the received location data update request message carries a recovery indication, and if so, send the user location data inserting message to the near field communication server.

In this embodiment, the location update request message includes: and the position information of the user comprises PLMN identification ID where the user is located.

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

According to the invention, after HSS is adopted for restarting, the location data updating request message of the user sent by the first MME is received; the HSS sends the user position data inserting message to the near field communication server, and the user position data inserting message carries the user position data related to the near field communication service, so that the problem that the strategy of near field communication server communication is inaccurate after the HSS is restarted in the related technology is solved, the accuracy and the real-time performance of the near field communication server communication strategy are improved, a large amount of signaling resources do not need to be occupied, and the condition that the HSS is overloaded is avoided.

drawings

the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

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

Fig. 2 is a diagram illustrating a D2D service authorization process according to the related art;

Fig. 3 is a schematic diagram illustrating a process of respectively acquiring user data from an HSS by a mobility management unit and a proxy function in the related art;

Fig. 4 is a flowchart of a method of D2D traffic restoration according to an embodiment of the present invention;

Fig. 5 is a block diagram of an apparatus for D2D traffic restoration according to an embodiment of the present invention;

FIG. 6 is a block diagram of an HSS in accordance with an embodiment of the present invention;

fig. 7 is a flowchart of a method for D2D traffic recovery in accordance with a preferred embodiment of the present invention;

FIG. 8 is a first flowchart illustrating a specific implementation of a preferred embodiment of the present invention;

FIG. 9 is a flowchart illustrating a second exemplary implementation of the present invention.

Detailed Description

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

in this embodiment, a method for recovering D2D service is provided, and fig. 4 is a flowchart of a method for recovering D2D service according to an embodiment of the present invention, as shown in fig. 4, the method includes the following steps:

Step S402, after HSS is restarted, receiving a user position data updating request message sent by a first MME;

Step S404, the HSS sends a user location insertion data message to a near field communication server (near field communication server), where the user location insertion data message carries user location data related to a near field communication service.

Through the above steps, after the HSS is restarted and receives the location update request message sent by the first MME, the location data insertion message is sent to the corresponding near field communication server, where the location data insertion message carries the user location data related to the near field communication service, so that the near field communication server can also update the related user location data in time, thereby solving the problem in the related art that the policy of near field communication server communication may be inaccurate after the HSS is restarted, improving the accuracy and real-time performance of the near field communication server communication policy, and avoiding the occurrence of an overload condition of the HSS due to a large amount of occupied signaling resources.

In this embodiment, before the HSS sends the message of inserting the user location data to the nfc server, the HSS may resolve an address of the corresponding nfc server according to an identifier of the user (for example, an International Mobile Subscriber Identity, abbreviated as IMSI), where the address of the nfc server is used for the HSS to send the message of inserting the user location data to the nfc server.

in this embodiment, before the HSS sending the insert subscriber location data message to the short-range communication server in step S404, the HSS may determine whether to send the insert subscriber location data message to the short-range communication server. Specifically, the present embodiment provides the following two HSS determination methods:

firstly, the HSS may determine whether to send the inserted user location data message to the short-range communication server according to whether the user uses a D2D service in the current PLMN, for example, if the user uses a D2D service in the current PLMN, the inserted user location data message is sent to the short-range communication server, otherwise, the inserted user location data message is not sent;

in a second mode, the HSS may also determine whether to send the subscriber location data insertion message to the near field communication server according to whether the received location data update request message carries a recovery indication, for example, if the received location update request message carries the recovery indication, the subscriber location data insertion message is sent to the near field communication server, otherwise, the subscriber location data insertion message is not sent.

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

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

corresponding to the foregoing method, in this embodiment, a device for recovering a D2D service is further provided, and is located in an HSS, where the device is used to implement the foregoing embodiment and the preferred embodiment, and the description of the device that has been already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

fig. 5 is a block diagram of a device for recovering D2D traffic according to an embodiment of the present invention, and as shown in fig. 5, the device includes: a receiving module 52 and a transmitting module 54, each of which is described in detail below:

a receiving module 52, configured to receive a location data update request message of a user sent by an MME after the HSS is restarted; and a sending module 54, connected to the receiving module 52, for sending a message of inserting user location data to the near field communication server, where the message of inserting user location data carries user location data related to the near field communication service.

in this embodiment, the apparatus may further include a parsing module, connected to the sending module 54, configured to parse, according to the identifier of the user, an address of a corresponding near field communication server, where the address of the near field communication server is used by the HSS to send the user location data inserting message to the near field communication server.

In this embodiment, the apparatus may further include: and a judging module, connected to the receiving module 52 and the sending module 54, for judging whether to send the insert user location data message to the near field communication server.

in this embodiment, the determining module may include at least one of: a first judging unit, configured to judge whether the user uses a D2D service in a current Public Land Mobile Network (PLMN), and if so, send the insert user location data message to the near field communication server; and a second judging unit, configured to judge whether the received location data update request message carries a recovery indication, and if so, send the user location data inserting message to the near field communication server.

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

in this embodiment, there is also provided an HSS, and fig. 6 is a block diagram of an HSS according to an embodiment of the present invention, and as shown in fig. 6, the HSS includes a device for recovering a D2D service as shown in fig. 5.

The following description is given in conjunction with the preferred embodiments, which combine the above embodiments and their preferred embodiments.

In the following preferred embodiments, a method and an apparatus for recovering a near field communication service are provided, where the method specifically includes: after receiving a location update request message (also referred to as a location data update request message) from the mobility management unit, the HSS sends an insert subscriber data message (also referred to as a subscriber location data message) to the Prose function, where the message carries subscriber data (also referred to as subscriber location data) related to the Prose service.

Further, the HSS determines whether to send the insert subscriber data message to the Prose function according to whether the subscriber uses the D2D service in the current PLMN.

further, the location update request message carries a recovery indication; the recovery indication is used to instruct the HSS to send an insert subscriber data message to the se function.

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

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

further, if the UE is registered in the new mobility management unit, the recovery indication is carried to the destination mobility management unit by the original mobility management unit in the context acquisition process.

the HSS for recovering the D2D service provided in the preferred embodiment includes:

Receiving a position updating request message from a mobile management unit, and sending a user data inserting message to a Prose function, wherein the message carries user data related to a Prose service;

the method and apparatus for service restoration 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 recovering D2D service according to a preferred embodiment of the present invention, and as shown in fig. 7, the flowchart includes the following steps:

Step S702, after HSS is restarted, sending restart message to the mobile management unit (Prose function), the mobile management unit and the Prose function respectively setting user data unreliable; when a mobility management unit receives a non-access stratum (NAS) message of UE, the mobility management unit sends a location update request message to HSS, the request message carries a recovery indication, the recovery indication is set by the mobility management unit according to a user data unreliable mark and whether a user allows to use a D2D service, and the request message can also carry a PLMN ID on which the user is currently camped;

Step S704, HSS resolves the address corresponding to the program function according to the user IMSI mark; if the location update request message in step S702 does not carry the recovery indication, 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, and 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, otherwise not send the insert user data message;

Step S706, HSS sends the insert user data message to the program function, and the program function sets the user data as authenticated after receiving the insert user data message.

fig. 8 is a first flowchart illustrating a specific implementation procedure according to a preferred embodiment of the present invention, where the mobility management unit for UE registration is not changed, and as shown in fig. 8, the flowchart includes the following steps:

Step S802, after the HSS is restarted, a restart message is sent to the MME;

Step S804, after the HSS is restarted, a restart message is sent to the Prose function;

step S806, the MME sets user data unreliable;

Step S808, the Prose function sets that the user data is unreliable;

Step S810, the MME receives an NAS message sent by the user, where the NAS message includes a Tracking Area Update (Tracking Area Update, referred to as TAU request message for short, 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, where the recovery indication is set by the mobility management unit according to the unreliable flag of the user data and whether the user allows to use the D2D service, and the request message may also carry a PLMN ID where the user currently camps;

step S814, HSS sends position update confirm message to MME, MME sets user data as authenticated;

Step S816, because only one dose function is deployed on one PLMN, the HSS can resolve the address corresponding to the dose function according to the user IMSI identifier, and the HSS sends a request for inserting user data to the dose function; if the location update request message in step S812 does not carry the recovery indication, 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, and 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, otherwise not send the insert user data message;

in step S818, the Prose function returns an insert user data response message to the HSS, and sets the user data as authenticated.

fig. 9 is a second flowchart of a specific implementation procedure according to a preferred embodiment of the present invention, where the flowchart is a flowchart of a change of a mobility management unit for UE registration, and as shown in fig. 9, the flowchart includes the following steps:

step S902, after HSS restarts, sends restart message to MME;

Step S904, after the HSS is restarted, 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;

Step S910, the MME receives a TAU request message sent by the user, where the TAU request message carries a Global unique temporary identifier (GUTI for short) allocated by the original MME;

Step S912, the new MME acquires the address of the original MME according to the GUTI and sends a context acquisition request message to the original MME to acquire the user context and the bearing context;

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

specifically, the old 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 also carries a recovery indication or carries a user data unreliable mark and user allowed use D2D service information; therefore, the new MME can determine a recovery indication according to the unreliable user data marks carried by the original MME and the service information D2D allowed by the user;

step S916, the new MME returns a context confirmation message to the original MME;

step S918, MME sends a position updating request message to HSS, 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 can also carry the PLMN ID on which the user currently camps;

step S920, HSS sends position updating confirmation message to MME, MME sets user data as authenticated;

step S922, HSS sends user data insertion request to the Prose function;

Specifically, because only one dose function is deployed in one PLMN, the HSS can resolve an address corresponding to the dose function according to the user IMSI identifier, and the HSS sends a request for inserting user data to the dose function. If the location update request message in step S918 does not carry the recovery indication, 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, and 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, otherwise not send the insert user data message;

Step S924, the Prose function returns an insert user data response message to the HSS, and sets the user data as authenticated.

in another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and the preferred embodiments.

In another embodiment, a storage medium is provided, wherein the software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disc, a hard disc, a rewritable memory, and the like.

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

the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. a method for device-to-device D2D traffic recovery, comprising:

after a Home Subscriber Server (HSS) is restarted, receiving a location data updating request message of a user, which is sent by a first mobility management unit (MME);

and the HSS sends a user position data inserting message to the near field communication server, wherein the user position data inserting message carries user position data related to the near field communication service.

2. the method of claim 1, prior to the HSS sending an insert subscriber location data message to the close range communications server, further comprising:

And the HSS analyzes the corresponding address of the near field communication server according to the identification of the user, wherein the address of the near field communication server is used for the HSS to send the user position data inserting message to the near field communication server.

3. The method of claim 1, prior to the HSS sending an insert subscriber location data message to the close range communications server, further comprising:

The HSS determines whether to send an insert user location data message to the near field communication server.

4. the method of claim 3, wherein the HSS determining whether to send an insert subscriber location data message to the close range communications server comprises at least one of:

the HSS judges whether the user uses a D2D service in the current Public Land Mobile Network (PLMN), if so, the HSS sends the message of inserting the user position data to the short-range communication server;

and the HSS judges whether the received position data updating request message carries a recovery indication, and if so, the HSS sends the user position data inserting message to the near field communication server.

5. the method of claim 4,

And under the condition that the user position data in the first MME is set to be unavailable and the user is allowed to use the D2D service, the position data updating request message carries the recovery indication.

6. The method of claim 4,

and under the condition that the user is switched from a first MME to a second MME for registration, the recovery indication is carried to the second MME by the first MME in the context acquisition process.

7. The method according to any one of claims 1 to 5, wherein the location data update request message comprises: location information of the user, wherein,

The location information includes a PLMN identity ID where the user is located.

8. An apparatus for device-to-device D2D service restoration, located in a home subscriber server, HSS, comprising:

A receiving module, configured to receive a location data update request message of a user sent by a mobility management unit MME after a home subscriber server HSS is restarted;

And the sending module is used for sending a user inserting position data message to the near field communication server, wherein the user inserting position data message carries user data related to the near field communication service, so that the near field communication server updates the related user position data.

9. the apparatus of claim 8, further comprising:

and the analysis module is used for analyzing the corresponding address of the near field communication server according to the identification of the user, wherein the address of the near field communication server is used for the HSS to send the user position data inserting message to the near field communication server.

10. The apparatus of claim 8, further comprising:

And the judging module is used for judging whether to send the message of inserting the user position data to the near field communication server.

11. the apparatus of claim 10, wherein the determining module comprises at least one of:

A first judging unit, configured to judge whether the user uses a D2D service in a current public land mobile network PLMN, and if so, send the insert user location data message to the near field communication server;

And a second judging unit, configured to judge whether the received location data update request message carries a recovery indication, and if so, send the user location data inserting message to the near field communication server.

12. The apparatus according to any of claims 8 to 11, wherein the location update request message comprises: location information of the user, wherein,

the location information includes a PLMN identity ID where the user is located.

13. A home subscriber server, HSS, characterized in that it comprises means for device-to-device, D2D, service restoration according to any of claims 8 to 12.