CN117956440A

CN117956440A - Information transmission method and device, mobile management entity and home subscriber server

Info

Publication number: CN117956440A
Application number: CN202211277851.1A
Authority: CN
Inventors: 杜晓宁; 窦志刚; 周忠良; 刘晨; 刘学芳; 黎丹
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2024-04-30

Abstract

The invention provides an information transmission method, an information transmission device, a mobile management entity and a home subscriber server. Under the condition that a joint request sent by a terminal is received, acquiring first information, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IP multimedia subsystem IMS access point; and under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, sending a first response result to the terminal, wherein the first response result indicates that the joint request is refused.

Description

Information transmission method and device, mobile management entity and home subscriber server

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, an information transmission device, a mobile management entity, and a home subscriber server.

Background

In the mobile communication network, the number of access users is continuously increased, wherein the mobile communication network mainly comprises an Internet of things terminal and a user, and the mobile communication network comprises a pure 2G module, an NB module and a 2/4G module, and the static and dynamic capacities of the MSC are occupied when the mobile communication network is accessed through 2G, NB or 4G. Users of the internet of things and the personal network accessing through the 4G or NB wirelessly, regardless of the terminal type, currently initiate a joint request (such as a joint attach request or a joint tracking area update request TAU request), or a single request (such as an EPS single attach request or a single tracking area update) +sms only, to a Mobility management entity (Mobility MANAGEMENT ENTITY, MME), and the MME initiates an SGs interface location area update request to the MSC to occupy capacity, even if the IMS voice terminal. Existing personal network terminals and subscribers, whether 2/3G terminals, 4G non-IMS terminals, 4G IMS terminals, 4/5G terminals, continue to occupy the capacity of the MSC when accessed through 2G or 4G.

With the gradual network fallback of 2/3G wireless networks, 2/3G Mobile switching centers (Mobile SWITCHING CENTER, MSC) will also fall back in bulk, and operators will not or will not have reduced the investment in 2/3G MSCs, whether they be virtualized new platforms or legacy proprietary platforms. When the MSC is no longer invested and expanded, the newly added and stored users and terminals, no matter the service and the terminal type, occupy 100% of the MSC capacity, and the old MSC capacity is insufficient.

Disclosure of Invention

The invention aims to provide an information transmission method, an information transmission device, a mobile management entity and a home subscriber server, which are used for solving the problem that when the existing MSC is no longer invested or expanded, newly-added and stored users and terminals, no matter the service and the terminal type, occupy 100% of the MSC capacity, so that the old MSC capacity is insufficient.

In order to achieve the above object, in a first aspect, the present invention provides an information transmission method, applied to a mobility management entity, including:

Under the condition that a joint request sent by a terminal is received, acquiring first information, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IP multimedia subsystem IMS access point;

And under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, sending a first response result to the terminal, wherein the first response result indicates that the joint request is refused.

Optionally, in the case that the joint request is a joint attach request, the first response result is a first attach result, where the first attach result indicates that the mobility management entity MME only allows the terminal to be attached singly;

In the case that the joint request is a joint tracking area update request, the first response result is a first update result, where the first update result indicates that the MME only allows the terminal single tracking area update.

Optionally, according to the first information, determining that the terminal is an IMS terminal subscribed to an IMS service includes:

And under the condition that the access network information meets the first condition and the second information meets the second condition, determining the terminal as an IMS terminal subscribed with IMS service.

Optionally, the access network information meeting the first condition includes the access network not supporting single wireless voice call continuity SRVCC and not enabling session handover number STN-SR;

The second information meeting a second condition includes: the second information comprises user subscription and terminal capability, wherein the user subscription is about IMS APN subscription, and the terminal capability is that the terminal is an IMS terminal;

Or the second information meeting the second condition includes: the second information includes an IMS APN bearer state, and the IMS APN bearer state is an active state.

Optionally, the access network information meeting the first condition includes the access network supporting SRVCC and enabling STN-SR and the access network not presetting STN-SR;

the second information meeting a second condition includes: the second information includes a user subscription and the user subscription is about an STN-SR subscription; or alternatively

The second information meeting a second condition includes: the second information includes a user subscription and terminal capability, wherein the user subscription is about STN-SR subscription, and the terminal capability is that the terminal is an IMS terminal.

Optionally, the access network information meeting the first condition includes the access network supporting SRVCC and enabling STN-SR and the access network presetting STN-SR;

The second information meeting a second condition includes: the second information comprises a user sign, wherein the user sign is about STN-SR sign, and the corresponding STN-SR is a non-preset value; or alternatively

The second information meeting a second condition includes: the second information comprises a user subscription and terminal capability, the user subscription is about STN-SR subscription, the corresponding STN-SR is a non-preset value, and the terminal capability is that the terminal is an IMS terminal.

Optionally, the acquiring the first information includes at least one of:

after determining that the initiation of EPS registration to a Home Subscriber Server (HSS) is successful, receiving a user subscription sent by the HSS;

After determining that the terminal is successfully attached or the tracking area is successfully updated and the IMS APN bearing is established, acquiring the IMS APN bearing state;

the terminal capability is acquired through an attach request message or a tracking area update request message.

Optionally, the method further comprises:

And sending first indication information to the terminal, wherein the first indication information is used for indicating the reason of refusing the joint request.

Optionally, the method further comprises:

Before the terminal does not receive the joint request sent by the terminal, if the terminal is detected to be in a joint attachment state or a joint tracking area update state, the SGs link connection with the terminal is released;

and sending second indication information to the MSC, wherein the second indication information is used for indicating the MSC to disconnect the SGs link with the terminal.

Optionally, the method further comprises:

And acquiring the STN-SR corresponding to the STN-SR subscription updated based on the configuration parameters when the IMS registration of the terminal is released by the HSS.

Optionally, the method further comprises:

Under the condition that the access network presets the STN-SR, when the IMS registration of the terminal is released by the HSS, the STN-SR corresponding to the STN-SR subscription after modification based on the configuration parameters is obtained, and the STN-SR corresponding to the STN-SR subscription after modification is a preset value.

In a second aspect, the present invention further provides an information transmission method, applied to a home subscriber server, including:

And under the condition that the terminal is determined to be successfully registered to the local through the Mobile Management Entity (MME), sending a user subscription to the MME, so that when the MME receives a joint request sent by the terminal, under the condition that the terminal is determined to be an IMS terminal subscribed with IMS service according to first information, sending a first response result to the terminal, wherein the first response result indicates that the joint request is refused, the first information comprises the user subscription, and the user subscription is about STN-SR subscription.

Optionally, the method further comprises:

and updating the STN-SR corresponding to the STN-SR subscription based on the configuration parameters when the IMS registration of the terminal is released.

Optionally, updating the STN-SR corresponding to the STN-SR subscription based on the configuration parameter includes:

Deleting the STN-SR corresponding to the STN-SR subscription based on the configuration parameters under the condition that the access network of the terminal does not preset the STN-SR; or alternatively

Under the condition that the access network of the terminal presets the STN-SR, the STN-SR corresponding to the STN-SR subscription is modified to be a preset value based on the configuration parameters.

In a third aspect, the present invention also provides an information transmission apparatus, including:

The first acquisition module is used for acquiring first information under the condition of receiving a joint request sent by a terminal, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and an APN bearing state of an IMS access point of an IP multimedia subsystem;

And the first sending module is used for sending a first response result to the terminal under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, wherein the first response result indicates that the joint request is refused.

In a fourth aspect, the present invention also provides an information transmission apparatus, including:

And a fourth sending module, configured to send a user subscription to an MME when it is determined that the terminal is successfully registered to the local location through a mobility management entity MME, so that when the MME receives a association request sent by the terminal, if it is determined that the terminal is an IMS terminal subscribed to an IMS service according to first information, a first response result is sent to the terminal, where the first response result indicates that the association request is denied, the first information includes the user subscription, and the user subscription is about an STN-SR subscription.

In a fifth aspect, the present invention also provides a mobility management entity comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, the processor being configured to:

and sending a first response result to the terminal under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information by the transceiver, wherein the first response result indicates that the joint request is refused.

In a sixth aspect, the present invention also provides a home subscriber server comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, the processor being configured to perform the following process:

And under the condition that the terminal is determined to be successfully registered to the local through a Mobile Management Entity (MME), sending a user subscription to the MME through a transceiver, so that when the MME receives a joint request sent by the terminal, sending a first response result to the terminal under the condition that the terminal is determined to be an IMS terminal subscribed with IMS service according to first information, wherein the first response result indicates that the joint request is refused, the first information comprises the user subscription, and the user subscription is about STN-SR subscription.

In a seventh aspect, the present invention further provides a mobility management entity, including a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements the information transmission method according to the first aspect described above when executing the program.

In an eighth aspect, the present invention also provides a home subscriber server, including a memory, a processor, and a program stored on the memory and executable on the processor; the processor implements the information transmission method according to the second aspect described above when executing the program.

In a ninth aspect, the present invention also provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the information transmission method according to the first aspect described above, or implements the steps of the information method according to the second aspect described above.

The technical scheme of the invention has at least the following beneficial effects:

In the embodiment of the invention, under the condition of receiving a joint request sent by a terminal, acquiring first information, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IMS access point of an IP multimedia subsystem; and sending a first response result to the terminal under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, wherein the first response result indicates that the joint request is refused, so that the joint attachment can be limited under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service through the processing, namely, only the single attachment of the terminal is allowed, or the joint tracking area update is limited, namely, only the single tracking area update of the terminal is allowed, thereby ensuring that the MME does not need to initiate an SGs interface position area update request to the MSC to occupy MSC resources, and achieving the effect of reducing the MSC pressure.

Drawings

Fig. 1 shows one of the flow diagrams of the information transmission method according to the embodiment of the invention;

FIG. 2 is a second flow chart of an information transmission method according to an embodiment of the invention;

fig. 3 shows one of the block diagrams of the information transmission device according to the embodiment of the present invention;

FIG. 4 is a second schematic block diagram of an information transmission device according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a mobility management entity according to an embodiment of the present invention;

fig. 6 shows a schematic structure of a home subscriber server according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Before explaining the embodiments of the present application, description will be made first of the related art point:

The 2/3G MSC belongs to the equipment with the longest deployment time and the oldest deployment time in the network, equipment suppliers and upstream component suppliers thereof stop production, supply and maintenance, and the equipment is marginal to operate in the old network, so as to provide a 2/3G MSC access function for 2/3G users with 2/3G wireless access. In addition, when the 4G/narrowband internet of things (Narrow Band Internet of Things, NB-IoT) is wirelessly accessed, the terminal initiates a joint request (joint attach request or joint tracking area update request TAU request), or a single request (e.g., EPS single attach request or single tracking area update request) +sms only, and the MME needs to connect with the SGs MSC through an SGs interface (interface between the MME and the MSC), so as to provide the user with the joint request and the voice short message function based on the joint request. The current network MSC can be used as both a 2/3G MSC and an SGs MSC.

For 4G wireless access, various terminals initiate a joint request (such as an attach request or a TAU request), and before the terminals initiate access, the terminals cannot know network capabilities (whether to support an IP multimedia subsystem (IP Multimedia Subsystem) service) and user subscription (whether to sign up for Circuit Switched (CS) sms and voice, and whether to sign up for IMS service). According to terminal capability and user subscription, users are classified into the following two types:

1) Either a combined EPS/IMSI ATTACH attachment result or a combined tracking area update (tracking area update result is combined TA/LA update) is necessary: data terminal user with short message service subscription, voice terminal user supporting only circuit switched fallback (Circuit Switched Fallback, CSFB) terminal, voice terminal user supporting IMS terminal but subscribing only CS voice short message

2) It is not necessary to attach in combination: only pure data users subscribed to data services, voice terminal users subscribed to IMS services and terminal support IMS.

For NB wireless access, various terminals initiate EPS single attachment or single tracking area update requests, additional update type is SMS only, which causes MME (which does not support SGd interface) to initiate SGs joint attachment requests to SGs MSC, because the terminals cannot know network capability (whether SMS short message is supported) and user subscription (whether SMS short message is signed) before initiating access; in addition, the partial-stock old terminal can also initiate a combined request (combined EPS/IMSI ATTACH, combined TA/LA updating). According to terminal capability and user subscription, users are classified into the following two types:

1) The MME must initiate an SGs interface location area update request to the MSC: there are subscribers signed by short messages.

2) The MME does not have to initiate an SGs interface location area update request to the MSC: there are no subscribers signed by short messages.

The existing internet of things and users accessing the personal network through 4G or NB wireless initiate a joint request (the attachment request type is combined EPS/IMSI ATTACH or the tracking area update request type is combined TA/LA updating) or an EPS single request (the attachment request type is EPS ATTACH or the tracking area update request type is TA updating) +SMS only to the MME, and the MME initiates an SGs interface position area update request to the MSC occupation capacity, and the MSC does not invest and expands any more, so that the old MSC capacity is insufficient.

In order to solve the above problems, the present invention provides an information transmission method, an information transmission device, a mobility management entity and a home subscriber server. The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

As shown in fig. 1, a flow chart of an information transmission method according to an embodiment of the present invention is shown, and the method is applied to a mobility management entity, where the method specifically includes:

Step 101, under the condition that a joint request sent by a terminal is received, acquiring first information, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IP multimedia subsystem IMS access point.

Optionally, the joint request is a joint attach request or a joint tracking area update request.

Wherein the user subscription includes, but is not limited to: network access mode (Network Access Mode, NAM) subscription, IMS APN subscription, session hand-off number (Session Transfer Number-Single Radio, STN-SR) subscription.

For NAM subscription: if the user of the terminal signs NAM subscription and the NAM subscription is ONLY_PACKET (PACKET domain ONLY), the terminal should be single attached or single tracking area updated; if the NAM subscription is PACKET AND CIRCUIT domain, the terminal may be able to jointly attach or jointly track the area update, AND specifically whether it is jointly based on other fields, such as STN-SR fields.

Subscription to IMS APN: a Long Term Evolution Voice-Term Evolution (VoLTE) user must sign up for an IMS APN in order to establish an IMS base bearer, and subsequently complete services such as IMS registration, call, etc.

Specifically, if the network does not open the IMS for automatic opening or does not pre-sign up for the IMS APN, if the user sign up for the IMS APN-related sign up, the user signs up for the complete IMS service, and the terminal should only allow single attach (the type of attach request is EPS only) or single tracking area update (the type of tracking area update request is TA update).

If the network opens the IMS to automatically open and pre-sign the IMS APN, the IMS user who has really signed the IMS service cannot be identified only by signing the IMS APN, and the terminal or the joint attachment or joint tracking area update may be judged based on other fields (such as STN-SR field) in particular.

For STN-SR subscription: STN-SR is used for a single channel wireless voice call continuity (Single Radio Voice Call Continuity, SRVCC) handover procedure from 4G IMS to 2/3G MSC.

Specifically, if the network does not enable SRVCC, there is no STN-SR in subscription.

If the network supports and starts SRVCC switching, but does not start IMS automatic opening, or starts IMS automatic opening but does not preset STN-SR; then there is STN-SR indicating that the user has subscribed to the complete IMS service, the terminal should only allow single attach or single tracking area update;

The STN-SR (is a non-preset value) indicates that the user has subscribed to the IMS service and has once completed IMS registration but does not indicate the current IMS registration of the user.

If the network supports and starts SRVCC handover, and starts IMS auto-start and presets STN-SR (which is a preset value), it cannot be determined whether the user has subscribed to the complete IMS service by STN-SR (which is a non-preset value), and STN-SR (which is a non-preset value) indicates that the user has subscribed to the IMS service and has once completed IMS registration but does not indicate the current IMS registration status of the user.

That is, it is not possible to determine whether the user is subscribed to the IMS terminal+ims depending on whether the STN-SR exists.

Here, the IMS APN bearer status may specifically include the following status:

a) IMS APN bearer activation: indicating that the user has an IMS APN subscription, the terminal is an IMS terminal and opens VoLTE, and completes the IMS APN bearer establishment successfully, the terminal only allows single attachment or single tracking area update.

B) IMS APN bearer inactivity: indicating that the user has no subscription for IMS APN, or has subscription for IMS APN but the terminal is a non-IMS terminal, or the IMS terminal is closed but VoLTE, the terminal should allow joint attachment or joint tracking area update.

It should be noted that, in the Attach Request message or the tracking area update Request TAU Request message, the Voice domain PREFERENCE AND UE's user service setting reporting terminal capability is set to the MME through Voice domain selection and UE usage (preference).

Specifically, voice domain preference for E-UTRAN in Voice domain PREFERENCE AND UE's user setting is CS Voice only, which indicates that the terminal supports Voice but does not support IMS Voice, and indicates that the terminal is a non-IMS terminal; voice domain preference for E-UTRAN "IMS PS Voice only"、"CS voice preferred,IMS PS Voice as secondary"、"IMS PS voice preferred,CS Voice as secondary" indicates that the terminal supports IMS voice, indicating that the terminal is an IMS terminal.

Step 102, sending a first response result to the terminal when the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, wherein the first response result indicates that the joint request is refused.

Optionally, in the case that the joint request is a joint attach request, the first response result is a first attach result, where the first attach result indicates that the mobility management entity MME only allows the terminal to be attached singly; in the case that the joint request is a joint tracking area update request, the first response result is a first update result, where the first update result indicates that the MME only allows the terminal single tracking area update.

When determining that the terminal is an IMS terminal subscribed with IMS service according to the first information, the MME in the embodiment of the invention limits the joint attachment, namely refuses the joint attachment request initiated by the terminal, only allows the single attachment of the terminal or limits the joint tracking area update, namely refuses the joint tracking area update request initiated by the terminal, and only allows the single tracking area update of the terminal; the method comprises the steps of sending a first attachment result indicating that the MME only allows the single attachment of the terminal or a first update result indicating that the MME only allows the single tracking area update of the terminal to the terminal, and saving resources in order to prevent the terminal from continuously attempting a joint attachment request or a joint tracking area update request.

Of course, if it is determined that the terminal is an IMS terminal not subscribed to the IMS service or a non-IMS terminal based on the first information, a second response result is sent to the terminal, where the second response result indicates that joint attachment is allowed.

Specifically, in the case that the joint request is a joint attach request, the second response result is a second attach result, where the second attach result indicates that the mobility management entity MME allows the terminal to attach jointly; and in the case that the joint request is a joint tracking area updating request, the second response result is a second updating result, and the second updating result indicates that the MME allows the joint tracking area of the terminal to be updated.

In an alternative implementation, in step 101, first information is obtained, including at least one of:

i) After determining that the initiation of EPS registration to a Home Subscriber Server (HSS) is successful, receiving a user subscription sent by the HSS;

That is, after the MME initiates the Evolved packet system (Evolved PACKET SYSTEM, EPS) to register to the home subscriber server (Home Subscriber Server, HSS) successfully, the HSS issues a subscriber subscription (e.g., EPS subscription information).

Ii) after determining that the terminal attachment is successful or the tracking area update is successful and the IMS APN bearing is established, acquiring an IMS APN bearing state;

That is, the MME may know the IMS APN bearer status after successful user attach or tracking area update, IMS APN bearer establishment.

Iii) The terminal capability is acquired through an attach request message or a tracking area update request message.

In an optional implementation manner, in step 102, determining, according to the first information, that the terminal is an IMS terminal subscribed to the IMS service may include:

In an embodiment, the access network information satisfying the first condition includes the access network not supporting single wireless voice call continuity, SRVCC, and not enabling session handoff number, STN-SR;

the second information meeting the second condition includes: the second information comprises user subscription and terminal capability, wherein the user subscription is about IMS APN subscription, and the terminal capability is that the terminal is an IMS terminal;

In this embodiment there are two cases:

case one

The access network does not support SRVCC and does not enable STN-SR, the second information comprises IMS APN subscription and terminal capability, the terminal capability indicates that the terminal is an IMS terminal, and the MME only allows single attachment; or the MME allows only a single tracking area update.

Case two

The access network does not support SRVCC and does not enable STN-SR, the second information comprises IMS APN bearing state, the IMS APN bearing state is active state, and MME only allows single attachment; or the MME allows only a single tracking area update.

If the IMS APN bearing state is in an inactive state, the MME allows the joint attachment, namely, allows the terminal to initiate a joint attachment request; or the MME allows for joint tracking area updates.

In another embodiment, the access network information satisfying the first condition includes the access network supporting SRVCC and enabling STN-SR and the access network not presetting STN-SR;

the second information meeting the second condition includes: the second information comprises a user subscription and the user subscription is about an STN-SR subscription; or alternatively

The second information meeting the second condition includes: the second information comprises user subscription and terminal capability, wherein the user subscription is about STN-SR subscription, and the terminal capability is that the terminal is an IMS terminal;

That is, the access network supports SRVCC and enables STN-SR and the access network does not preset STN-SR, in which case the MME allows only single attachment or the MME allows only single tracking area update if the second information includes STN-SR subscription, i.e. there is STN-SR; or if the second information includes STN-SR subscription and terminal capability, and the terminal capability indicates that the terminal is an IMS terminal, the MME allows only single attachment or the MME allows only single tracking area update.

In yet another embodiment, the access network information satisfying the first condition includes the access network supporting SRVCC and enabling STN-SR and the access network presetting STN-SR;

The second information meeting the second condition includes: the second information comprises a user subscription, wherein the user subscription is about STN-SR subscription, and the corresponding STN-SR is a non-preset value; or alternatively

The second information meeting the second condition includes: the second information includes a user subscription and terminal capability, the user subscription is about STN-SR subscription, the corresponding STN-SR is a non-preset value, and the terminal capability is that the terminal is an IMS terminal.

I.e. the access network supports SRVCC and enables STN-SR and the access network presets STN-SR, in which case the MME only allows single attach or the MME only allows single tracking area update if the second information comprises STN-SR subscription, i.e. there is STN-SR and the corresponding STN-SR is a non-preset value; or if the second information includes STN-SR subscription and terminal capability, and the corresponding STN-SR is a non-preset value, and the terminal capability indicates that the terminal is an IMS terminal, the MME only allows single attachment or the MME only allows single tracking area update.

It should be noted that, in the implementation of the two embodiments related to determining whether a terminal is an IMS terminal subscribed to an IMS service based on STN-SR subscription, HSS is required, that is, optionally, the method of the embodiment of the present invention may further include:

That is, when the IMS network notifies the HSS to release the user IMS registration, the stored user STN-SR is parameter updated (i.e., reset operation is performed) based on the configuration.

Further, under the condition that the access network does not preset the STN-SR, the STN-SR corresponding to the STN-SR subscription is deleted by the HSS based on the configuration parameters when the IMS registration of the terminal is released;

This situation corresponds to the first of the two embodiments described above relating to determining whether the terminal is an IMS terminal subscribed to an IMS service based on an STN-SR subscription (i.e. in another embodiment the user has an STN-SR, the MME only allows single attach or the MME only allows single tracking area update; or if the second information comprises an STN-SR subscription and terminal capabilities, and the terminal capabilities indicate that the terminal is an IMS terminal, the MME only allows single attach or the MME only allows single tracking area update).

Or under the condition that the access network presets the STN-SR, when the IMS registration of the terminal is released by the HSS, the STN-SR corresponding to the modified STN-SR subscription is obtained, and the STN-SR corresponding to the modified STN-SR subscription is a preset value.

This case corresponds to the second of the two embodiments described above relating to determining whether the terminal is an IMS terminal subscribed to an IMS service based on an STN-SR subscription (i.e. in yet another embodiment the user has an STN-SR and the corresponding STN-SR is a non-preset value, the MME only allows single attach or the MME only allows single tracking area update, or if the second information comprises an STN-SR subscription and a terminal capability and the corresponding STN-SR is a non-preset value and the terminal capability indicates that the terminal is an IMS terminal, the MME only allows single attach or the MME only allows single tracking area update).

In an alternative implementation, the method of the embodiment of the present invention may further include:

Specifically, the first indication information is used to indicate a reason for allowing only a single attachment of the terminal or a reason for allowing only a single tracking area update of the terminal.

That is, the MME issues first indication information such as EMM Cause value (# 18, # 2) to the terminal.

And before the joint request sent by the terminal is not received, if the terminal is in a joint attachment state or a joint tracking area updating state, the SGs link connection with the terminal is released.

Here, for the terminal that has been attached jointly or updated in the joint tracking area, the MME locally disconnects the SGs link with the terminal, and thus, the SGs link resource on the MME side is released.

By the above processing, both the SGs link of the terminal on the MME side and the SGs link on the MSC side are released, so that the link resources on both the MME side and the MSC side are released for the terminal to occupy for joint attachment or joint tracking area update.

By the information transmission method, under the condition that the terminal is accurately determined to be the IMS terminal subscribed with IMS service, the joint attachment is limited, namely, the terminal initiates a joint attachment request and then successfully attaches, the result is EPS only, only the terminal is allowed to singly attach, or the terminal initiates a joint tracking area update request and then successfully updates, the result is TA updated, only the terminal is allowed to update, so that the MME does not need to initiate an SGs interface position area update request to the MSC to occupy MSC resources, and the effect of reducing MSC pressure is achieved.

As shown in fig. 2, a flow chart of an information transmission method according to an embodiment of the present invention is shown, and the method is applied to a home subscriber server, where the method may specifically include:

In step 201, when it is determined that the terminal is successfully registered to the local area through the mobility management entity MME, a user subscription is sent to the MME, so that when the MME receives the association request sent by the terminal, if it is determined that the terminal is an IMS terminal subscribed to the IMS service according to first information, a first response result is sent to the terminal, where the first response result indicates that the association request is denied, the first information includes the user subscription, and the user subscription is about the STN-SR subscription.

Wherein, in case the joint request is a joint attach request, the first response result is a first attach result, the first attach result indicating that the MME only allows the terminal to be attached singly.

In order to realize that the MME determines whether the terminal is an IMS terminal subscribed to an IMS service based on STN-SR subscription, cooperation of the HSS is required, and in particular, in an optional implementation manner, the method of an embodiment of the present invention may further include:

Further, updating the STN-SR corresponding to the STN-SR subscription based on the configuration parameters includes:

Under the condition that the access network of the terminal does not preset the STN-SR, deleting the STN-SR corresponding to the STN-SR subscription based on the configuration parameters;

a) Preset precondition 1: an IMS service centralization and continuity application server (SERVICE CALL Continuity Application Server, SCC AS) updates the HSS stored value based on the received STN-SR even if the STN-SR is not received from the HSS at the time of IMS registration of the user.

B) Preset precondition 2: HSS, when there is no STN-SR value in the user data, IMS SCC AS can support to update and store the STN-SRN value when updating STN-SR.

Or under the condition that the access network of the terminal presets the STN-SR, modifying the STN-SR corresponding to the STN-SR subscription to a preset value based on the configuration parameters.

In the information transmission method of the embodiment of the invention, under the condition that the terminal is determined to be successfully registered to the local through the mobile management entity MME, the user subscription is sent to the MME, and auxiliary coordination is provided, so that the MME can determine whether the terminal is an IMS terminal subscribed with IMS service or not based on the user subscription, and subsequently under the condition that the MME determines that the terminal is an IMS terminal subscribed with IMS service, the MME limits joint attachment, only allows single attachment of the terminal or limits joint tracking area update, only allows single tracking area update of the terminal, thereby avoiding the MME from initiating SGs interface position area update request to MSC to occupy MSC resources and achieving the effect of reducing MSC pressure.

As shown in fig. 3, an embodiment of the present invention further provides an information transmission apparatus, which may include:

A first obtaining module 301, configured to obtain, when receiving a joint request sent by a terminal, first information, where the first information includes access network information and second information, and the second information includes at least one of a user subscription, a terminal capability, and an APN bearer state of an IP multimedia subsystem IMS access point;

And the first sending module 302 is configured to send a first response result to the terminal when it is determined that the terminal is an IMS terminal subscribed to the IMS service according to the first information, where the first response result indicates that the association request is denied.

Optionally, in the case that the joint request is a joint attach request, the first response result is a first attach result, where the first attach result indicates that the mobility management entity MME only allows the terminal to be attached singly; in the case that the joint request is a joint tracking area update request, the first response result is a first update result, and the first update result indicates that the MME only allows the single tracking area update of the terminal.

Alternatively, the first transmitting module 302 may include:

And the first processing unit is used for determining that the terminal is an IMS terminal subscribed with IMS service under the condition that the access network information meets the first condition and the second information meets the second condition.

The second information meeting the second condition includes: the second information includes a user subscription and terminal capability, wherein the user subscription is about STN-SR subscription, and the terminal capability is that the terminal is IMS terminal.

the second information meeting the second condition includes: the first information comprises a user subscription, wherein the user subscription is about STN-SR subscription, and the corresponding STN-SR is a non-preset value; or alternatively

The second information meeting the second condition includes: the first information comprises a user subscription and terminal capability, wherein the user subscription is about STN-SR subscription, the corresponding STN-SR is a non-preset value, and the terminal capability is that the terminal is an IMS terminal.

Alternatively, the first acquisition module 301 may include:

The first acquisition unit is used for receiving user subscription sent by the HSS after determining that the EPS registration is successfully initiated to the home subscriber server HSS; or alternatively

The second obtaining unit is used for obtaining an IMS APN bearing state after determining that the terminal is successfully attached or the tracking area is successfully updated and the IMS APN bearing is established; or alternatively

And a third acquisition unit for acquiring the terminal capability through the attach request message or the tracking area update request message.

Optionally, the information transmission device of the embodiment of the present invention further includes:

the second sending module is used for sending first indication information to the terminal, wherein the first indication information is used for indicating the reason of refusing the joint request.

The first processing module is used for releasing the SGs link connection with the terminal under the condition that the terminal is detected to be in a joint attachment state or a joint tracking area update state before the joint request sent by the terminal is not received;

And the third sending module is used for sending second indication information to the mobile switching center MSC, wherein the second indication information is used for indicating the MSC to release the SGs link connection with the terminal.

And the second acquisition module is used for acquiring the STN-SR corresponding to the STN-SR subscription updated based on the configuration parameters when the IMS registration of the terminal is released by the HSS.

And the third acquisition module is used for acquiring the STN-SR corresponding to the modified STN-SR subscription based on the configuration parameters when the HSS releases the IMS registration of the terminal under the condition of presetting the STN-SR by the access network, wherein the STN-SR corresponding to the modified STN-SR subscription is a preset value.

The information transmission device of the embodiment of the invention acquires first information under the condition of receiving a joint request sent by a terminal, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IMS access point of an IP multimedia subsystem; and sending a first response result to the terminal under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, wherein the first response result indicates that the joint request is refused, so that the joint attachment can be limited under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service through the processing, namely, only the single attachment of the terminal is allowed, or the joint tracking area update is limited, namely, only the single tracking area update of the terminal is allowed, thereby ensuring that the MME does not need to initiate an SGs interface position area update request to the MSC to occupy MSC resources, and achieving the effect of reducing the MSC pressure.

As shown in fig. 4, an embodiment of the present invention further provides an information transmission apparatus, which may include:

A fourth sending module 401, configured to send a user subscription to an MME when it is determined that the terminal is successfully registered to the home location through the mobility management entity MME, so that when the MME receives a association request sent by the terminal, if it is determined that the terminal is an IMS terminal subscribed to an IMS service according to first information, send a first response result to the terminal, where the first response result indicates that the association request is denied, the first information includes the user subscription, and the user subscription is about the STN-SR subscription.

And the second processing module is used for updating the STN-SR corresponding to the STN-SR subscription based on the configuration parameters when the IMS registration of the terminal is released.

Optionally, the second processing module may include:

The first processing unit is used for deleting the STN-SR corresponding to the STN-SR subscription based on the configuration parameters under the condition that the access network of the terminal does not preset the STN-SR; or alternatively

And the second processing unit is used for modifying the STN-SR corresponding to the STN-SR subscription to a preset value based on the configuration parameter under the condition that the access network of the terminal presets the STN-SR.

In the information transmission device of the embodiment of the invention, under the condition that the terminal is determined to be successfully registered to the local through the mobile management entity MME, the user subscription is sent to the MME, and auxiliary coordination is provided, so that the MME can determine whether the terminal is an IMS terminal subscribed with IMS service or not based on the user subscription, and subsequently under the condition that the MME determines that the terminal is an IMS terminal subscribed with IMS service, the MME limits joint attachment, only allows single attachment of the terminal or limits joint tracking area update, only allows single tracking area update of the terminal, thereby avoiding the MME from initiating SGs interface position area update request to MSC to occupy MSC resources and achieving the effect of reducing MSC pressure.

In order to better achieve the above objects, as shown in fig. 5, an embodiment of the present invention further provides a mobility management entity, including a processor 500 and a transceiver 510, where the processor 500 is configured to perform the following procedures:

and sending, by the transceiver 510, a first response result to the terminal when it is determined that the terminal is an IMS terminal subscribed to the IMS service according to the first information, where the first response result indicates that the association request is denied.

Optionally, the processor 500 is further configured to:

after determining that the terminal is attached successfully or the tracking area is updated successfully and the IMS APN bearing is established, acquiring an IMS APN bearing state;

Optionally, the transceiver 510 is further configured to:

Optionally, the processor 500 is further configured to:

Before the joint request sent by the terminal is not received, if the terminal is detected to be in a joint attachment state or a joint tracking area updating state, the SGs link connection with the terminal is released;

Optionally, the processor 500 is further configured to:

Under the condition that the access network presets the STN-SR, when the IMS registration of the terminal is released by the HSS, the STN-SR corresponding to the modified STN-SR subscription is obtained, and the STN-SR corresponding to the modified STN-SR subscription is a preset value.

The mobile management entity of the embodiment of the invention acquires first information under the condition of receiving a joint request sent by a terminal, wherein the first information comprises access network information and second information, and the second information comprises at least one of user subscription, terminal capability and APN bearing state of an IMS access point of an IP multimedia subsystem; and sending a first response result to the terminal under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service according to the first information, wherein the first response result indicates that the joint request is refused, so that the joint attachment can be limited under the condition that the terminal is determined to be the IMS terminal subscribed with the IMS service through the processing, namely, only the single attachment of the terminal is allowed, or the joint tracking area update is limited, namely, only the single tracking area update of the terminal is allowed, thereby ensuring that the MME does not need to initiate an SGs interface position area update request to the MSC to occupy MSC resources, and achieving the effect of reducing the MSC pressure.

In order to better achieve the above object, as shown in fig. 6, an embodiment of the present invention further provides a home subscriber server, including a processor 600 and a transceiver 610, where the transceiver 610 is configured to perform the following procedures:

And under the condition that the terminal is determined to be successfully registered to the local through the mobile management entity MME, sending a user subscription to the MME, so that when the MME receives the combination request sent by the terminal, under the condition that the terminal is determined to be the IMS terminal subscribed with IMS service according to first information, sending a first response result to the terminal, wherein the first response result indicates that the combination request is refused, the first information comprises the user subscription, and the user subscription is about STN-SR subscription.

Optionally, the processor 600 is configured to:

Optionally, the processor 600 is further configured to:

Under the condition that the access network of the terminal does not preset the STN-SR, deleting the STN-SR corresponding to the STN-SR subscription based on the configuration parameters; or alternatively

The home subscriber server in the embodiment of the invention provides auxiliary coordination by sending a user subscription to the MME under the condition that the terminal is determined to be successfully registered to the local through the mobile management entity MME, so that the MME can determine whether the terminal is an IMS terminal subscribed with IMS service based on the user subscription, and subsequently under the condition that the MME determines that the terminal is an IMS terminal subscribed with IMS service, the MME limits joint attachment, only allows single attachment of the terminal or limits joint tracking area update, only allows single tracking area update of the terminal, thereby avoiding the MME from initiating an SGs interface position area update request to the MSC to occupy MSC resources and achieving the effect of reducing MSC pressure.

The embodiment of the invention also provides a mobile management entity, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes each process in the embodiment of the information transmission method as described above when executing the program, and can achieve the same technical effect, and the repetition is avoided, and the description is omitted here.

The embodiment of the invention also provides a home subscriber server, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes each process in the embodiment of the information transmission method as described above when executing the program, and can achieve the same technical effect, and the repetition is avoided, and the description is omitted here.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the program when executed by a processor implements each process in the embodiment of the information transmission method described above, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein. The computer readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, magnetic disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.

These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. An information transmission method applied to a mobile management entity, comprising:

2. The method according to claim 1, wherein in case the joint request is a joint attach request, the first response result is a first attach result, the first attach result indicating that a mobile management entity MME allows only the terminal to be attached;

3. The method according to claim 1, wherein determining, based on the first information, that the terminal is an IMS terminal subscribed to an IMS service, comprises:

4. The method of claim 3, wherein the access network information meeting a first condition comprises the access network not supporting single wireless voice call continuity, SRVCC, and not enabling session handoff number, STN-SR;

5. The method of claim 3, wherein the access network information meeting a first condition comprises the access network supporting SRVCC and enabling STN-SR and the access network not presetting STN-SR;

6. The method of claim 3, wherein the access network information meeting a first condition comprises the access network supporting SRVCC and enabling STN-SR and the access network presetting STN-SR;

7. The method of claim 1, wherein the obtaining the first information comprises at least one of:

8. The method according to claim 1, wherein the method further comprises:

9. The method according to claim 1, wherein the method further comprises:

10. The method according to claim 5 or 6, characterized in that the method further comprises:

11. The method according to claim 10, wherein the method further comprises:

12. An information transmission method applied to a home subscriber server, comprising:

13. The method according to claim 12, wherein the method further comprises:

14. The method of claim 13, wherein updating the STN-SR corresponding to the STN-SR subscription based on the configuration parameters comprises:

15. An information transmission apparatus, comprising:

16. An information transmission apparatus, comprising:

17. A mobility management entity comprising a processor and a transceiver, said transceiver receiving and transmitting data under control of the processor, said processor being configured to:

18. A home subscriber server comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to perform the following:

19. A mobility management entity comprising a memory, a processor, and a program stored on the memory and executable on the processor; the information transmission method according to any one of claims 1 to 11, characterized in that the processor executes the program.

20. A home subscriber server comprising a memory, a processor and a program stored on the memory and executable on the processor; the information transmission method according to any one of claims 12 to 14, characterized in that the processor executes the program.

21. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, realizes the steps in the information transmission method according to any one of claims 1 to 11 or the steps in the information transmission method according to any one of claims 12 to 14.