CN110856098B

CN110856098B - Circuit switched fallback combined location update processing method, system, device and medium

Info

Publication number: CN110856098B
Application number: CN201810870532.9A
Authority: CN
Inventors: 樊士杨
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Sichuan Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Sichuan Co Ltd
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2021-09-28
Anticipated expiration: 2038-08-02
Also published as: CN110856098A

Abstract

The embodiment of the invention discloses a method, a system and equipment for updating and processing a circuit switched fallback combined position and a computer readable storage medium, wherein the method comprises the following steps: when User Equipment (UE) sends a joint location update request, a Mobility Management Entity (MME) receives the joint location update request; the MME sends a joint location update message and user identification information of the UE to a Mobile Switching Center (MSC), wherein the joint location update message corresponds to the joint location update request; and the MSC receives the combined location updating message and the user identification information of the UE, judges whether the user identification information is allocated by the MSC, and if the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS). The invention can solve the problem that the circuit switched fallback CSFB service is damaged.

Description

Circuit switched fallback combined location update processing method, system, device and medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a system, a device, and a computer-readable storage medium for processing a circuit switched fallback combined location update.

Background

Generally, Circuit Switched Fallback (CSFB) technology is a protocol-specified voice service solution. Based on the CSFB technique, a user needs to be registered in an Evolved Packet System (EPS) network and a conventional circuit domain network at the same time. When a user initiates a voice service, the EPS network instructs the user to drop back to the circuit domain network, and then initiates the voice service, so that a Mobility Management Entity (MME) of the EPS network and a Mobile Switching Center (MSC) of the circuit domain core network simultaneously store user information.

At present, after operations such as network cutover or network failure recovery, a CSFB service may be damaged, and once the CSFB service is damaged, a user cannot use the CSFB service, which directly results in a failure of a voice call of the user. In the prior art, due to the lack of a targeted solution, once the CSFB service is damaged, data of all users attached to the involved MME or MSC can only be forcibly removed, forcing all users to need to be powered on and off again and reattached. Such a processing method cannot improve the problem of CSFB service impairment, and also expands the number of affected users.

Disclosure of Invention

The embodiment of the invention provides a circuit switched fallback combined position updating processing scheme, which solves the problem of CSFB service damage by sending and judging identification information of user equipment.

In a first aspect, an embodiment of the present invention provides a method for updating a circuit switched fallback combined location, where the method includes: when User Equipment (UE) sends a joint location update request, a Mobility Management Entity (MME) receives the joint location update request; the MME sends a joint location update message and user identification information of the UE to a Mobile Switching Center (MSC), wherein the joint location update message corresponds to the joint location update request; the MSC receives the combined location updating message and the user identification information of the UE, judges whether the user identification information is allocated by the MSC, and if the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS); if the user identification information is distributed by the MSC, the MSC does not initiate a user location information updating process to the HSS.

Optionally, after the MSC initiates a subscriber location information update procedure to the HSS, the method further includes: and updating the user position information recorded by the HSS.

Optionally, the subscriber identity information includes temporary mobile subscriber identity TMSI information.

Optionally, the ue identifier information is carried in a joint location update message sent by the MME to the MSC.

In a second aspect, an embodiment of the present invention provides a device for processing a circuit switched fallback combined location update, where the device includes: a first receiving module, configured to receive a joint location update request when a user equipment UE sends the joint location update request; a first sending module, configured to send a joint location update message and the UE user identity information to a mobile switching center MSC, where the joint location update message corresponds to the joint location update request; a second receiving module, configured to receive the joint location update message and the UE user identity information; a judging and processing module, configured to judge whether the user identifier information is allocated by the MSC; the updating processing module is used for initiating a user position information updating process to a Home Subscriber Server (HSS) when the user identification information is not distributed by the MSC; wherein the first receiving module and the first transmitting module are included in the MME, and the second receiving module, the judgment processing module and the update processing module are included in the MSC.

In a third aspect, an embodiment of the present invention provides a system for processing circuit switched fallback combined location update, where the system includes: a mobility management entity MME and a mobile switching center MSC, wherein the MME is used for receiving a joint location update request when user equipment UE sends the joint location update request, and sending a joint location update message and user identification information of the UE to the MSC, wherein the joint location update message corresponds to the joint location update request; the MSC is used for receiving the combined location updating message and the user identification information of the UE, judging whether the user identification information is allocated by the MSC, and when the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS).

In a fourth aspect, an embodiment of the present invention provides a device for processing circuit switched fallback combined location update, where the device includes: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of the first aspect of the embodiments described above.

In a fifth aspect, embodiments of the present invention provide a computer-readable storage medium, on which computer program instructions are stored, which, when executed by a processor, implement the method of the first aspect in the above embodiments.

The embodiment of the invention provides a method, a system, a device, equipment and a computer readable storage medium for updating and processing a circuit switched fallback combined position, and the proposal is provided on the premise that the states of all network nodes and the information interaction process among the nodes related to a CSFB scheme are deeply analyzed and checked, and the cause of CSFB service damage is determined to be mainly the user position information error of an HSS in the CSFB caused by MSC fault and user migration; on the premise of finishing the work, the scheme of the invention can update the user position information of the HSS as required by sending and judging the user identification information to the MSC, thereby pertinently solving the problem of wrong user position information in CSFB.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 shows a schematic diagram of a CSFB logic architecture.

Figure 2 shows a flow chart of a joint TA/LA location update.

Fig. 3 shows a schematic diagram of MSC failover in an MSC Pool, MSC Pool.

Fig. 4 is a flowchart illustrating a circuit switched fallback joint location update processing method according to an embodiment of the present invention.

Fig. 5 is a flowchart illustrating a circuit switched fallback joint location update processing method according to another embodiment of the present invention.

Fig. 6 is a block diagram illustrating a circuit switched fallback cooperative location update processing apparatus according to an embodiment of the present invention.

Fig. 7 is a block diagram illustrating a circuit switched fallback combined location update processing system according to an embodiment of the present invention.

Fig. 8 is a schematic diagram illustrating a hardware structure of a circuit switched fallback combined location update processing device according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Fig. 1 shows a schematic diagram of a typical CSFB logical architecture, in which an SGs interface between an MME and an MSC Server is one of the most important interfaces, through which a user can fall back from an EPS network to a circuit domain network, and through which a user can jointly attach to the EPS network and the circuit domain network and perform location update. Fig. 2 shows a flowchart of a typical CSFB joint Tracking Area/Location Area (TA/LA) Location update. When User Equipment (UE) meets a Tracking Area Update (TAU) triggering condition, a TAU flow is initiated to an MME to request for joint TA/LA location Update, the MME requests location Update to a circuit domain, and the MSC and HSS Update the location information of the UE, so that the UE location information on the MME, the MSC and the HSS are kept consistent. Fig. 3 shows a schematic diagram of MSC failure migration in MSC Pool, where there is an information error in MME1 and/or MSC1, which may result in CSFB service impairment and failure of user call or called party.

< CSFB traffic impairment analysis >

For the case that the CSFB service is damaged after the network failure (such as network cutover or network failure drill) is recovered, the present invention has conducted intensive research on the cause of the damage, and has found the following two points:

1. due to network failure, the MSC may be down;

2. if the user migration occurs after the MSC is down, CSFB service impairment may occur.

Based on the two findings, the invention deeply inspects and analyzes the state of each network node related to the CSFB and the information interaction between the nodes, and finally determines the cause of the CSFB service damage. The investigation analysis process is described in detail below.

Firstly, CSFB user UEs are jointly attached to the MME and the MSC1, and after the MSC1 goes down (for example, due to a network failure), the users are migrated from the MSC1 to the MSC2 through the MME;

then, MME initiates a joint TA/LA location update to MSC2, MSC2 executes a joint TA/LA location update procedure, and initiates a location update request to HSS, HSS changes user location information, HSS also sends delete CANCEL information to MSC1, in order to enable MSC1 to clear location information and subscription data of the original user (those users that have migrated to MSC2), and the like;

however, at this time, since the MSC1 is in the down state and cannot normally receive the CANCEL information sent by the HSS, the MSC1 does not execute the CANCEL procedure, so that the MSC1 still retains the location information and the subscription data of the original user;

after the MSC1 resumes operation, the user migrates from the MSC2 to the MSC1 through the MME, and the MME initiates a joint TA/LA location update to the MSC1, but since the information of the original user is still retained in the MSC1, the MSC1 does not perform the joint TA/LA location update and does not initiate a location update request to the HSS, so the HSS does not change the user location information, and the user location information in the HSS indicates that the user is on the MSC2 although the actual location of the user is on the MSC 1.

If the user is called at this time, the HSS query indicates that the user is at the MSC2, the network will send a call request to the MSC2, but the actual location of the user is at the MSC1, and the MSC2 does not have the data of the user, so that the MSC1 actually registered by the user cannot be found, which results in a call failure.

As can be seen, the reason why the CSFB service is impaired is: subscriber location information error of HSS in CSFB caused by MSC failure and subscriber migration.

On the premise of determining the CSFB damage reason, the invention provides a method for updating the circuit switched fallback CSFB combined position, which can solve the problem of the user position information error of the HSS by judging the identification information and forcibly updating the user position information of the HSS when needed. The scheme of the invention is described in detail below.

< configuration of MME >

The MME is one of core network elements of a packet domain of an LTE network, and mainly supports functions of mobility management, bearer management, user authentication and authentication, selection of a Serving GateWay (SGW) and a public data network (PDN GateWay, PGW) and the like.

In the embodiment of the present invention, after receiving a Location Update Request from a user equipment UE, an MME sends user identification information of the UE to a target MSC in addition to initiating a Location Update Request (Location Update Request) to the target MSC, where the user identification information is allocated by an MSC to which the UE is currently registered.

In some embodiments of the present invention, the user identity information may be sent simultaneously with the location update request initiated by the MME to the target MSC; in other embodiments, the subscriber identity information may also be sent earlier or later than the location update request.

In a preferred embodiment, the user identification information may be carried in the location update request initiated by the MME to the target MSC. For example, the user identification information is added to the message of the location updating request, so that the operation is simple and convenient, and the processing efficiency is high.

In some embodiments of the present invention, the location update request from the user UE is a joint TA/LA location update request.

< configuration of MSC >

The Mobile switching center MSC is the core of the Global System for Mobile Communications (GSM), and acquires all data required for user location registration and call request from the GSM network, and the MSC can update part of the data in the database according to the newly acquired information request, and also supports functions with Mobile features such as location registration, handover, automatic roaming, and the like.

In the embodiment of the present invention, the MSC receives the location update request and the user identity information from the MME, and then updates the location information of the UE based on the location update request and the user identity information.

In some embodiments of the present invention, after receiving the location update request and the user identification information from the MME, the MSC determines the user identification information to see whether the user identification information is allocated by the MSC, and if the user identification information is allocated by the MSC, does not initiate a location update procedure to the HSS; if the user identification information is not distributed by the MSC, a location updating process is initiated to the HSS so that the HSS can forcedly update the location information data of the UE.

In some embodiments of the present invention, the determining, by the MSC, the user identifier information refers to comparing, by the MSC, the received user identifier information with identifier information allocated by the MSC itself to the UE, and if the received user identifier information and the identifier information are consistent, the user identifier information is allocated by the MSC; if the two are not consistent, the user identification information is not allocated by the local MSC.

< subscriber identification information >

In some embodiments of the present invention, the user identification information includes a Temporary Mobile Subscriber Identity (TMSI) of the user. In other embodiments, the Subscriber Identity information may further include an International Mobile Subscriber Identity (IMSI) of the Subscriber.

Generally, the TMSI refers to a temporary subscriber identity assigned to a subscriber by an MSC or a Visitor Location Register (VLR) in order to ensure the security of the IMSI in mobile communication, and is mainly used to temporarily replace the IMSI for transmission over the air interface.

Further, the IMSI is used to uniquely identify a mobile subscriber in a global area, the TMSI is only valid for a certain period of time in a location area, and the TMSI and IMSI uniquely correspond in a certain VLR area, and when the subscriber leaves the VLR, the TMSI number is released and the subscriber information is deleted.

< about application scenarios >

The technical scheme of the invention is obtained after the CSFB service damage analysis is carried out, and in brief, the CSFB service damage process is as follows: after the user updates to the MSC2 joint location (joint TA/LA update), the MSC2 notifies the HSS to change the user location, and meanwhile, the HSS needs to initiate a CANCEL procedure to the MSC1 to remove the location information of the MSC1, but because the MSC1 goes down or other reasons cause that the CANCEL information cannot be normally received, the MSC1 still keeps the location information and subscription data of the user; after the failure is recovered, the MME migrates the user from the MSC2 back to the MSC1, initiates a joint location update to the MSC1, and since the MSC1 still has the location information and subscription data of the previous user, the MME does not initiate a location update to the HSS, so that the data of the HSS is that the user is in the MSC2, but the user actually arrives at the MSC 1.

Based on the above, the following description is made for the applicable scenarios of the embodiments of the present invention:

1. when the user has performed the joint location update and updated to the MSC2, at this time, the MSC1 fails, and therefore the MSC1 cannot receive the CANCEL procedure of the HSS;

2. after the MSC1 is restored, the user of the MSC2 migrates back to the MSC1, i.e., the federated location update is updated to the MSC1, at which time no location update is initiated to the HSS, whose data shows that the user is at the MSC2, but the user is already at the MSC 1.

The above situation is sometimes referred to as a user double-alive.

When the user has double-live, if the user is called, the user is queried to be in the MSC2 through the HSS, so the request is sent to the MSC2 at this time, but the MSC2 does not have the data of the user at this time, so the MSC1 actually registered by the user cannot be found necessarily, and the called fails.

That is, in some cases, for example, the user can be called again while the user is alive, and the called party fails, which is considered to be the most extreme application scenario of the present solution. By adopting the scheme of the embodiment of the invention, the user called failure in the scene can not occur.

It is emphasized that although the present invention is based on the above problems in the existing network and thus triggers the inventor to inventively propose a solution, the embodiments of the present invention can be applied not only to the above scenario, but also to any other suitable scenario or currently unknown scenario to avoid the scenario from presenting certain problems, which may be similar to the problems described herein or may be completely different new problems.

The following describes in detail the implementation process of the embodiment of the present invention with different scenarios as embodiments.

Example 1

Fig. 4 is a flowchart illustrating a method for processing a cs fallback combined location update according to an embodiment of the present invention, where the method includes:

when User Equipment (UE) sends a joint location update request, a Mobility Management Entity (MME) receives the joint location update request;

the MME sends a joint location update message and user identification information of the UE to a Mobile Switching Center (MSC), wherein the joint location update message corresponds to the joint location update request;

the MSC receives the combined location updating message and the user identification information of the UE, judges whether the user identification information is allocated by the MSC, and if the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS); if the user identification information is distributed by the MSC, the MSC does not initiate a user location information updating process to the HSS.

The embodiment of the invention determines whether to forcibly initiate the user location information updating process to the HSS according to whether the user identification information is distributed by the current MSC, thereby eliminating the possible error of the HSS location information, avoiding the error of the location information in the CSFB and preventing the CSFB service from being damaged.

Example 2

Fig. 5 is a flowchart illustrating a method for processing a cs fallback combined location update according to an embodiment of the present invention. In this embodiment, the user identifier information includes a TMSI of the user UE, where the TMSI is carried in a location update request sent by the MME to the MSC, the location update request of the UE is a joint TA/LA location update request, and the MSC needs to determine the TMSI. The specific treatment process comprises the following steps:

1. the UE meets the TAU triggering condition and initiates a TAU flow;

2. the UE sends a TAU Request message to the MME, wherein an Update Type in the TAU Request message indicates that the TAU Request is a combined TA/LA location Update Request, and the MME prepares to Request the combined location Update to a CS domain;

3. the MME requests a combined position to be updated from an MSC in the CS domain according to a preset V value rule, and when the MME initiates the combined position to be updated to the MSC, the combined position updating request carries the TMSI and IMSI of the current user stored by the current MME;

4. the MSC judges the TMSI carried in the MME combined position updating request to see whether the TMSI is distributed by the MSC per se; if the MSC judges that the TMSI is inconsistent with the TMSI distributed by the MSC for the user, which indicates that the TMSI is not distributed by the MSC, the MSC needs to forcibly initiate a position updating process to the HSS and inform the HSS of position information change so as to avoid the situation that the HSS records wrong position information; if the MSC judges that the TMSI is consistent with the TMSI distributed by the MSC for the user, which indicates that the TMSI is distributed by the MSC, the MSC can use the data stored by the MSC to complete the combined location update without initiating a location update process to the HSS.

By using the scheme of the embodiment, the situation that the HSS records wrong position information in the CSFB can be avoided, so that the CSFB service is prevented from being damaged.

In addition, when the CSFB user initiates a joint attach request, the embodiment of the present invention may also be used to carry the TMSI in the joint location update request, so that when the MSC finds that the TMSI in the joint location update request is empty, it may be considered that the TMSI is inconsistent with the TMSI allocated by the MSC, and the MSC should initiate a location request procedure to the HSS.

Example 3

This embodiment describes an application scenario of the circuit switched fallback combined location update processing method of the present invention. The present embodiment assumes that MSC1 allocates TMSI1 to users and MSC2 allocates TMSI2 to users.

Firstly, the CSFB user UE is currently attached to the MME and the MSC1 jointly, and when the MSC1 fails or simulates failure drilling, the user automatically or through the MME migrates from the MSC1 to the MSC 2;

secondly, the MME initiates a joint TA/LA location update to the MSC2, the MSC2 executes a joint TA/LA location update procedure, and initiates a location update request to the HSS, the HSS changes the user location information, and then the HSS sends CANCEL information to the MSC1, so as to enable the MSC1 to clear the location information and subscription data of the original user (migrated to the MSC2), and the like;

however, since the MSC1 is in a down state and cannot normally receive CANCEL information sent by the HSS, the MSC1 does not execute a CANCEL procedure, so that the MSC1 still retains the location information and subscription data of the original user;

thirdly, after the failure of the MSC1 is recovered, the MME migrates the user from the MSC2 back to the MSC1, and initiates a joint location update request to the MSC1, where the joint location update request carries the TMSI2 allocated by the MSC2 to the user. At this time, because the MME combined location update message carries the TMSI2 of the user, when the MSC1 determines the TMSI2, it can be found that the TMSI2 is allocated to the MSC2, but not allocated to the MSC1, so that the location information and subscription data of the user stored on the MSC1 are not trusted, the MSC1 forcibly initiates location update to the HSS, so as to update the user location recorded by the HSS, and the HSS changes the user location from the MSC2 to the MSC 1.

Finally, if the subscriber is called at this time, the HSS query indicates that the subscriber is at MSC1, so the network will send a call request to MSC1, with the subscriber's actual location also at MSC1, and the call can be completed successfully.

In this embodiment, after the MSC1 recovers from the failure, the joint location update request message of the MME carries the TMSI2 of the user. The embodiment enables the HSS to correctly find the corresponding MSC when the CSFB user is in voice call, and solves the problem that the CSFB service is damaged after the network failure is recovered, which cannot be solved by the prior art.

Example 4

The present embodiment is different from embodiment 3 mainly in that: not only after the failure of the MSC1 is recovered, the joint location update request message of the MME carries the TMSI2 of the user, but also during the failure of the MSC1, the joint location update request message of the MME also carries the MSC1, that is: when the MME performs the joint location update procedure each time, the TMSI of the current user is carried in the joint location update request message initiated to the MSC. The present embodiment is described in detail below.

secondly, the MME initiates a joint TA/LA location update to the MSC2, where the joint TA/LA location update request message carries the TMSI1 allocated by the MSC1 for the user, and the MSC2 finds that the received TMSI1 is not allocated by the local MSC2, so after the MSC2 joint location update, the MSC2 further notifies the HSS to change the user location, and the HSS initiates a CANCEL procedure to the MSC1,

The advantages of the above treatment method are mainly:

1. before MSC failure, during failure and after failure recovery, when MME performs a combined TA/LA Location Update flow each time, TMSI of a current user is carried in a combined Location Update Request (Location Update Request) message initiated to MSC;

2. the MSC has the capacity of judging the TMSI, and when receiving the combined position updating request, the MSC judges the carried TMSI first and judges whether the TMSI is distributed by the MSC;

3. if the TMSI used by the user is not self-allocated, the MSC forces to initiate a location updating process to the HSS, thereby avoiding the situation that the HSS records wrong location information.

The embodiment enables the HSS to correctly find the corresponding MSC when the CSFB user is in voice call, and solves the problem that the CSFB service is damaged after the network failure is recovered, which cannot be solved by the prior art.

Example 5

Referring to fig. 6, according to the method of the embodiment of the present invention, the present invention further provides a device for processing circuit switched fallback combined location update, where the device includes:

a first receiving module 101, configured to receive a joint location update request when a user equipment UE sends the joint location update request;

a first sending module 102, configured to send a joint location update message and the UE subscriber identity information to a mobile switching center MSC, where the joint location update message corresponds to the joint location update request;

a second receiving module 103, configured to receive the joint location update message and the UE user identity information;

a judgment processing module 104, configured to judge whether the user identifier information is allocated by the MSC;

an update processing module 105, configured to initiate a user location information update procedure to a home subscriber server HSS when the user identifier information is not allocated by the MSC.

In the embodiment of the present invention, the apparatus further includes a subscriber location information updating module 106, configured to update the subscriber location information recorded by the HSS after the updating processing module 105 initiates a subscriber location information updating procedure to the HSS.

Wherein the user identification information is carried in the combined location update message.

Wherein the user identification information comprises TMSI information.

Wherein the joint location update request is a joint TA/LA location update request.

In an embodiment of the present invention, the first receiving module 101 and the first transmitting module 102 are included in the MME, and the second receiving module 103, the judgment processing module 104, and the update processing module 105 are included in the MSC.

In an embodiment of the present invention, the apparatus may further include: a user location information updating module, configured to update the user location information recorded by the HSS after the updating processing module 105 initiates a user location information updating procedure to the HSS.

Example 6

Referring to fig. 7, according to the method and apparatus of the embodiment of the present invention, the present invention further provides a system for processing a circuit switched fallback combined location update, where the system includes: a mobility management entity MME100 and a mobile switching center MSC200, wherein,

the MME100 is configured to receive a joint location update request when a user equipment UE sends the joint location update request, and send a joint location update message and user identity information of the UE to the MSC200, where the joint location update message corresponds to the joint location update request;

the MSC200 is configured to receive the combined location update message and the user identifier information of the UE, and determine whether the user identifier information is allocated by the MSC200, and when the user identifier information is not allocated by the MSC200, the MSC200 initiates a user location information update procedure to a home subscriber server HSS.

In the embodiment of the present invention, the system further includes a home subscriber server HSS, configured to update the recorded user location information when the MSC200 initiates a user location information update procedure.

Example 7

Referring to fig. 8, the method for processing update of the circuit switched fallback combined location according to the present invention can be implemented by a circuit switched fallback combined location update processing device. Fig. 8 is a schematic diagram illustrating a hardware structure of a circuit switched fallback combined location update processing device according to an embodiment of the present invention.

The circuit switched fallback combined location update handling device may comprise a processor 1001 and a memory 1002 storing computer program instructions.

Fig. 8 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing a communication method and a network server according to an embodiment of the present invention. As shown in fig. 8, computing device 1000 includes input device 1001, input interface 1002, processor 1003, memory 1004, output interface 1005, and output device 1006.

The input interface 1002, the processor 1003, the memory 1004, and the output interface 1005 are connected to each other via a bus 1010, and the input device 1001 and the output device 1006 are connected to the bus 1010 via the input interface 1002 and the output interface 1005, respectively, and further connected to other components of the computing device 1000.

Specifically, the input device 1001 receives input information from the outside and transmits the input information to the processor 1003 via the input interface 1002; the processor 1003 processes the input information based on computer-executable instructions stored in the memory 1004 to generate output information, stores the output information temporarily or permanently in the memory 1004, and then transmits the output information to the output device 1006 through the output interface 1005; output device 1006 outputs the output information external to computing device 1000 for use by a user.

The computing device 1000 may perform the steps of the communication method described herein.

Processor 1003 may be one or more Central Processing Units (CPUs). When the processor 601 or the processor 701 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The memory 1004 may be, but is not limited to, one or more of Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), compact disc read only memory (CD-ROM), a hard disk, and the like. The memory 1004 is used to store program codes.

It is understood that the functions of any or all of the modules provided in the embodiments of the present application may be implemented by the central processing unit 1003 shown in fig. 8.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

All parts of the specification are described in a progressive mode, the same and similar parts of all embodiments can be referred to each other, and each embodiment is mainly introduced to be different from other embodiments. In particular, as to the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple and reference may be made to the description of the method embodiments in relevant places.

Claims

1. A method for processing circuit switched fallback combined location update, the method comprising:

the MSC receives the combined location updating message and the user identification information of the UE, judges whether the user identification information is allocated by the MSC, and if the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS); if the user identification information is distributed by the MSC, the MSC does not initiate a user location information updating process to the HSS;

the user identification information is allocated by the MSC with which the UE is currently registered.

2. The method as claimed in claim 1, wherein after the MSC initiates a subscriber location information update procedure to the HSS, the method further comprises: and updating the user position information recorded by the HSS.

3. Method according to claim 1 or 2, wherein said subscriber identity information comprises temporary mobile subscriber identity, TMSI, information.

4. The method according to claim 1 or 2, wherein the subscriber identity information is carried in a joint location update message sent by the MME to the MSC.

5. A circuit switched fallback combined location update handling device, comprising:

a first receiving module, configured to receive, by a mobility management entity MME, a joint location update request when a user equipment UE sends the joint location update request;

a first sending module, configured to send, by the MME, a combined location update message and user identity information of the UE to a mobile switching center MSC, where the combined location update message corresponds to the combined location update request;

a second receiving module, configured to receive, by the MSC, the combined location update message and the UE user identity information;

a judgment processing module, configured to judge, by the MSC, whether the user identifier information is allocated by the MSC;

the updating processing module is used for initiating a user position information updating process to a Home Subscriber Server (HSS) by the MSC when the user identification information is not distributed by the MSC;

wherein the first receiving module and the first transmitting module are included in the MME, and the second receiving module, the judgment processing module and the update processing module are included in the MSC;

6. The apparatus of claim 5, further comprising: and the user position information updating module is used for updating the user position information recorded by the HSS after the updating processing module initiates a user position information updating process to the HSS.

7. A circuit switched fallback combined location update handling system, comprising: a mobility management entity MME and a mobile switching center MSC, wherein,

the MME is used for receiving a joint location update request and sending a joint location update message and user identification information of the UE to the MSC when User Equipment (UE) sends the joint location update request, wherein the joint location update message corresponds to the joint location update request;

the MSC is used for receiving the combined location updating message and the user identification information of the UE, judging whether the user identification information is allocated by the MSC, and when the user identification information is not allocated by the MSC, the MSC initiates a user location information updating process to a Home Subscriber Server (HSS);

8. The system of claim 7, further comprising: and the home subscriber server HSS is used for updating the recorded user position information when the MSC initiates a user position information updating process.

9. A circuit switched fallback combined location update handling device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-4.

10. A computer-readable storage medium having computer program instructions stored thereon which, when executed by a processor, implement the method of any one of claims 1 to 4.