CN109996268A

CN109996268A - Communication link connection method, device, equipment and medium

Info

Publication number: CN109996268A
Application number: CN201711487017.4A
Authority: CN
Inventors: 姚芋伶
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: 2017-12-29
Filing date: 2017-12-29
Publication date: 2019-07-09
Anticipated expiration: 2037-12-29
Also published as: CN109996268B

Abstract

The embodiment of the invention provides communication link connection method, device, equipment and media.Wherein, method includes: to inquire the first backup MME in the first pond MME when terminal is moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME；Pass through the second backup MME of the first backup MME query source MME；Pass through the second backup MME connection source MME.Technical solution of the present invention is able to solve the problem of can not achieve TAU in source MME failure in the prior art.

Description

Communication link connection method, device, equipment and medium

Technical field

The present invention relates to field of communication technology more particularly to a kind of communication link connection method, device, equipment and media

Background technique

VoLTE (Voice over Long Term Evolution) solution is the final solution party of voice service Case, increasingly mature with VoLTE technology, more stringent requirements are proposed to network availability and reliability by user.VoLTE voice Communication is related to EPC (Evolved Packet Core) core net and IMS (IP Multimedia Subsystem) core net, Access side of the EPC as IMS business, the failure of each network element can speech quality to VoLTE business and continuity cause It influences.In order to provide effective network quality guarantee, it is necessary to propose tightened up requirement to the disaster tolerance of EPC sidelinks.

MME full name is mobile management entity (Mobility Management Entity), is pure in EPC group-network construction Signaling plane network element is connected by S1-MME interface with wireless side eNB, and RRC connection is established, and completes 4G data traffic link signaling plane It establishes.VoLTE business is established on the basis of EPC sidelinks build completion, if occurring MME failure in communication process, EPC letter It enables face link disconnect, can cause to adhere to (attach), TAU (Tracking Area Update, tracing section updating), PAGING etc. Signaling process failure, so as to cause online, the interruption of VoLTE business.

Existing business process, terminal report attach request to eNB, and base station side is according to itself TAI (Tracking Area Identity, tracking area identification) and MME configuration data be based on load balancing and select a MME, MME is to HSS (Home Subscriber Server, home signature user server) user data progress bi-directional authentification is obtained, and according to current location Information TAI selects SGW, selects PGW, MME to assist the foundation of completion terminal and SAEGW user face link according to APN, MME is to eventually It holds UE to distribute GUTI value, is used to one user of unique identification in a network.MM context and EPC carrying are saved in MME and terminal Context.

The GUTI value of MME distribution is made of five part MCC, MNC, MMEGI, MMEC, M-TMSI, and wherein MMEGI is used to mark MME a POOL, MMEC are known for identifying unique MME in a POOL (pond), are numbered from 01.

For the reliability for promoting MME link, the guarantee plan that now net uses is known as the backup of MME chain type: several MME are formed MME is arranged according to MMEC size order in POOL, a POOL, maximum to be connected with the smallest, to form a MME backup Ring saves two parts of data on every MME, and portion is the business datum of itself carrying, another be back up it is adjacent and than itself The user data of MMEC big MME, the data of the maximum backup minimum MMEC of MMEC, each MME are recorded by inter-process mechanism Active and standby corresponding relationship between the MMEC and MME of other MME in POOL.Probe messages can be periodically sent between MME, when response message reaches To abnormal network element Rule of judgment, then determine that MME breaks down, updates MME networking structure and the corresponding pass master backup MME in POOL System.Fig. 1 is MME chain type networking data backup figure in the prior art.

When primary MME failure occurs in communication process for VoLTE user, and terminal moving range is without departing from MME POOL. At this point, eNB selects an other available MME in same POOL, the MMEC that new MME reads in S-TMSI value to obtain old MME and MME is backed up accordingly, the context data of user is got from backup MME, failure MME business is connected, to prevent MME failure leads to a large number of users, and lower/upper line brings a large amount of signaling impacts to core-network side again, meanwhile, it avoids to VoLTE The influence of user ensure that the service-aware of user.Fig. 2 is the process flow diagram of MME chain type protection in the prior art.

Under the prior art, when VoLTE terminal is in carrying out business use process, and moving range exceeds MME POOL, meeting TAU process is triggered, new MME is selected by new eNB.Under normal circumstances, new MME constructs DNS query according to GUTI value, finds Old MME completes TAU process；Under abnormal conditions, old MME breaks down, and new MME still sends request letter to old MME Breath requests response timeout, causes TAU to fail, interrupt to directly result in VoLTE business.Fig. 3 be in the prior art across TAU signaling process under POOL.

In conclusion there is also the demands for promoting VoLTE call reliability.

Summary of the invention

The embodiment of the invention provides a kind of communication link connection method, device, equipment and media, are able to ascend VoLTE Call reliability.

In a first aspect, the embodiment of the invention provides a kind of communication link connection methods, which comprises terminal from When the source MME in the pond first movement management entity MME is moved to the target MME in the 2nd pond MME, inquire in the first pond MME First backup MME；The second backup MME of the source MME is inquired by the first backup MME；Pass through the second backup MME Connect the source MME.

Second aspect, the embodiment of the invention provides a kind of communication link attachment device, described device includes: initiation mould Block, for inquiring institute when terminal is moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME State the first backup MME in the first pond MME；Enquiry module, for inquiring the of the source MME by the first backup MME Two backup MME；Link block, for passing through the second backup MME connection source MME.

The third aspect, the embodiment of the invention provides a kind of communication links to connect equipment, comprising: at least one processor, At least one processor and computer program instructions stored in memory, when computer program instructions are executed by processor The method of first aspect in Shi Shixian such as above embodiment.

Fourth aspect, the embodiment of the invention provides a kind of computer readable storage mediums, are stored thereon with computer journey The method such as first aspect in above embodiment is realized in sequence instruction when computer program instructions are executed by processor.

Communication link connection method, device, equipment and medium provided in an embodiment of the present invention, by increasing the standby of the pond MME newly Part MME, expands the scope of application of MME chain type backup, increases the value of Backup Data, solve in the prior art in source MME The problem of can not achieve TAU when failure reduces influence of the MME link failure to VoLTE business, is promoted using existing resource TAU success rate improves the network reliability of EPC, provides powerful guarantee for VoLTE business.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Attached drawing is briefly described, for those of ordinary skill in the art, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.

Fig. 1 is MME chain type networking data backup figure in the prior art；

Fig. 2 is the process flow diagram of MME chain type protection in the prior art；

Fig. 3 is in the prior art across the TAU signaling process under POOL；

Fig. 4 is the communication link connection method flow chart of one embodiment of the invention；

Fig. 5 is the process flow diagram of one embodiment of the invention；

Fig. 6 is the TAU process flow diagram of one embodiment of the invention；

Fig. 7 is the structure chart of the communication link attachment device of one embodiment of the invention；

Fig. 8 shows the hardware structural diagram of communication link connection equipment provided by one embodiment of the present invention.

Specific embodiment

The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention , technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail It states.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting the present invention. To those skilled in the art, the present invention can be real in the case where not needing some details in these details It applies.Below the description of embodiment is used for the purpose of better understanding the present invention to provide by showing example of the invention.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including There is also other identical elements in the process, method, article or equipment of the element.

Fig. 4 is the communication link connection method flow chart of one embodiment of the invention, this method comprises:

S402, when terminal is moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME, Inquire the first backup MME in the first pond MME；

S404 passes through the second backup MME of the first backup MME query source MME；

S406 passes through the second backup MME connection source MME.

Optionally, the first backup MME at least two, comprising: primary MME and spare MME, wherein spare MME is primary The standby node of MME.

It optionally, include: by primary MME query source MME by the second backup MME of the first backup MME query source MME The second backup MME.After the second backup MM by primary MME query source MME, method further include: in primary MME without response When, pass through the second backup MM of spare MME query source MME.

It optionally, include: that source MME and target MME are established by the second backup MME by the second backup MME connection source MME Wireless connection；The contextual information of target MME acquisition terminal VoLTE business on the MME of source.

Optionally, terminal is obtained on target MME after the contextual information of VoLTE business in target MME, this method is also It include: that target MME notice gateway SGW (service gateway) carries out bearing modification, request is redistributed global unique Interim UE identifies GUTI (Globally Unique Temporary UE Identity) value, and replys terminal and complete tracking area Update TAU process.

Optionally, before the first backup MME inquired in the first pond MME, this method further include: in the first pond MME The interface IP address of the first backup MME is configured on domain name system DNS (domain name system) server.

Optionally, the first backup MME inquired in the first pond MME includes: according to MME group identification MMEGI (MME Group Identity) construct predetermined MME Code MMEC's (MME Code, such as MMEC=00 are also possible to other agreement codings) DNS query request；The first backup MME in the first pond MME of inquiry is requested by DNS query.

The application is carried out completely and elaborated With reference to embodiment.

The embodiment of the present invention aim to solve the problem that VoLTE user in moving process, even if occur across POOL in the case of, it is primary MME failure will not traffic affecting normal use.By increasing the configuration of MMECGI=true value, MMEC=00 on DNS, The interface for specifying active and standby two MME to contact as MME in other POOL for each MME POOL (pond MME).The master configured on DNS Standby two MME pass through the context data that they find backup MME in original POOL for undertaking the MME outside POOL, play and connect The effect of continuous forwarding.An one main standby increase reliability, which increases the signalling loads of MME, so configuring on DNS active and standby When MME, can amount of capacity based on equipment select.Because backup MME has recorded original failure MME bearer service in former POOL Data, new MME initiate the inquiry request of MMEC=00 by the MMEGI in GUTI to DNS, and according to DNS return the result to It sends ECHO REQUEST message, and confirmation opposite end MME link is normal.At this point, being divided into two kinds of situations:

The primary MME normal operation of DNS configuration, then new MME sends subsequent message by the MME；

The primary MME failure of DNS configuration, then new MME sends ECHO message without response, sends subsequent disappear to spare MME Breath.

Fig. 5 be one embodiment of the invention TAU in the case of MME failure when Service assurance method process flow diagram. Include:

S51. it is constructed according to GUTI, initiates DNS query request；

S52. CONTEXT REQUEST, no response are sent to old MME；

S53. construction MMEC=00 inquiry, initiates DNS request；

S54.DNS returns to active/standby MME S10IP ADDRESS；

S55. primary MME state judgement；When judging normal, S561 is executed, when abnormal, executes S562；

S561.NEW-MME sends CONTEXT request to primary MME；

S562.NEW-MME sends CONTEXT request to spare MME；

S57. judge whether itself is backup MME；When being judged as YES, executes S60. and otherwise execute S58 and S59；

S58. forwarding CONTEXT is requested to backup MME；

S59. CONTEXT RESPONSE (and the address for modifying MME S10) is replied；

S60. reply CONTEXT RESPONSE (containing user information needed for TAU)；

S61. TAU is completed.

The available MME that new MME is returned to DNS sends CONTEXT REQUEST (context request) information, the request In GUTI value for finding spare MME, to realize TAU success.

Illustrate the communication link connection process flow of the embodiments of the present invention with an example below.Fig. 6 is this hair The TAU process flow diagram of bright one embodiment.Assuming that MME02 breaks down, backup MME is MME03, and MME01 in POOL Maximum with the capacity of MME02, the active and standby MME IP address configured on DNS is respectively MME01 and MME02 interface IP address.Below Illustrate in conjunction with the step in Fig. 6 when UE is moved to POOL2, the example process flow of the embodiment of the present invention.Step 01.TAU REQUEST (TAU request): when user is moved to POOL2, TAU request is initiated to new e-NB (NEW-eNB), eNB, which is received, to be asked Capacity factor measure is issued according to MME each in POOL2 after asking, the MME in POOL2 is selected according to load balancing principle, and carry out TAU and ask Ask forwarding；

After step 02.DNS REQUEST/RESPONSE (DNS request/response): new MME receives TAU request, according to asking GUTI value in asking finds old MME corresponding MMEGI and MMEC, constructs DNS query, and DNS returns to the S10 interface IP of MME02 Address；

Step 03.CONTEXT REQUEST (context request): new MME initiates to obtain user or more to failure MME02 Literary request of data；

Step 04.TIMEOUT (time-out): due to MME02 failure, new MME fails to receive sound within the configuration time limit It answers.In the case of this kind, now net process is that new MME directly replys terminal TA U failure, and TAU process terminates；And in the present invention In embodiment, increase the subsequent process since the 5th step.

Step 05.DNS REQUEST (DNS request): new MME construction MMEGI is consistent with the value in GUTI, MMEC=0 DNS query request；

Step 06.DNS RESPONSE (DNS response): DNS according to itself configuration return original POOL primary MME01 and The IP address (PRIMARY/SECONDARY IP ADDRESS) of spare MME02；

Step 07.ECHO REQUEST/RESPONSE (echo request/response): judge the link of new MME and MME01 Whether state is normal；

Step 08.CONTEXT REQUEST (context request) (old GUTI): new MME initiates user to MME01 again Context data request；

Step 09.CONTEXT REQUEST/RESPONSE (context request/response): according to MME in existing POOL Troubleshooting process, MME01 find the corresponding backup MME03 of MME02 according to GUTI value in request, obtain the context number of user According to；

Step 10.CONTEXT RESPONSE (context response): primary MME01 returns back to the user data of acquisition newly MME；

Step 11.TAU ACCEPT (TAU receiving) (new GUTI): after new MME receives user data, notice SGW is carried out Bearing modification redistributes GUTI value, and replys terminal and complete TAU process.

The embodiment of the invention provides the Service assurance method in the case of TAU when MME failure, solve when primary MME event When barrier, how Service assurance is carried out.Implementation is the DNS query for constructing MMEC=00 according to MMEGI by new MME, is found POOL where original MME configures to obtain the address that can use MME in original POOL, passes through MME failure in POOL according to DNS data Treatment mechanism finds backup MME information, so that the contextual information of user is obtained, in the case of realizing VoLTE business across POOL Normal switching.

Technical solution through the embodiment of the present invention reduces MME link failure to VoLTE business using existing resource Influence, promoted TAU success rate, expand MME chain type backup the scope of application, increase the value of Backup Data, improve EPC Network reliability, provide powerful guarantee for VoLTE business.

Fig. 7 is the structure chart of the communication link attachment device of one embodiment of the invention, which includes: initiation module 70, for when terminal is moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME, inquiry the The first backup MME in one pond MME；Enquiry module 72, for passing through the second backup MME of the first backup MME query source MME； Link block 74, for passing through the second backup MME connection source MME.

Optionally, enquiry module 72 includes: the first query unit, for the second backup by primary MME query source MME MME；Second query unit, for passing through the second backup MM of spare MME query source MME when primary MME is without response.

Optionally, link block 74 is arranged on target MME, for establishing source MME's and target MME by backup MME It is wirelessly connected；And obtain the contextual information of terminal VoLTE business on the MME of source.

Optionally, device further include: processing module, for obtaining terminal VoLTE business on the MME of source in target MME After contextual information, notice SGW carries out bearing modification, and global unique interim UE mark (GUTI) value is redistributed in request, and It replys terminal and completes tracing section updating (TAU) process.

Optionally, the device further include: configuration module, for being configured on the domain name system DNS server in the first pond MME The interface IP address of first backup MME.

Optionally, initiation module 70 includes: structural unit, for constructing MME Code according to MME group identification (MMEGI) The DNS query of MMEC=00 is requested；Transmission unit, for requesting the first backup in the first pond MME of inquiry by DNS query MME。

In addition, the communication link connection method in conjunction with Fig. 4 embodiment of the present invention described can be set by communication link connection It is standby to realize.Fig. 8 shows the hardware structural diagram of communication link connection equipment provided by one embodiment of the present invention.

It may include processor 401 and the memory for being stored with computer program instructions that the communication link, which connects equipment, 402。

Specifically, above-mentioned processor 401 may include central processing unit (CPU) or specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement implementation of the present invention One or more integrated circuits of example.

Memory 402 may include the mass storage for data or instruction.For example it rather than limits, memory 402 may include hard disk drive (Hard Disk Drive, HDD), floppy disk drive, flash memory, CD, magneto-optic disk, tape or logical With the combination of universal serial bus (Universal Serial Bus, USB) driver or two or more the above.It is closing In the case where suitable, memory 402 may include the medium of removable or non-removable (or fixed).In a suitable case, it stores Device 402 can be inside or outside data processing equipment.In a particular embodiment, memory 402 is nonvolatile solid state storage Device.In a particular embodiment, memory 402 includes read-only memory (ROM).In a suitable case, which can be mask ROM, programming ROM (PROM), erasable PROM (EPROM), the electric erasable PROM (EEPROM), electrically-alterable ROM of programming (EAROM) or the combination of flash memory or two or more the above.

Processor 401 is by reading and executing the computer program instructions stored in memory 402, to realize above-mentioned implementation Any one communication link connection method in example.

In one example, communication link connection equipment may also include communication interface 403 and bus 410.Wherein, such as Fig. 8 Shown, processor 401, memory 402, communication interface 403 connect by bus 410 and complete mutual communication.

Communication interface 403 is mainly used for realizing in the embodiment of the present invention between each module, device, unit and/or equipment Communication.

Bus 410 includes hardware, software or both, and the component of communication link connection equipment is coupled to each other together.It lifts It for example rather than limits, bus may include accelerated graphics port (AGP) or other graphics bus, enhancing Industry Standard Architecture (EISA) bus, front side bus (FSB), super transmission (HT) interconnection, Industry Standard Architecture (ISA) bus, infinite bandwidth interconnect, are low Number of pins (LPC) bus, memory bus, micro- channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI- Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association part (VLB) bus or The combination of other suitable buses or two or more the above.In a suitable case, bus 410 may include one Or multiple buses.Although specific bus has been described and illustrated in the embodiment of the present invention, the present invention considers any suitable bus Or interconnection.

Communication link connection equipment can execute the communication link connection method in any of the above-described embodiment of the present invention.

In addition, in conjunction with the communication link connection method in above-described embodiment, the embodiment of the present invention can provide a kind of computer Readable storage medium storing program for executing is realized.Computer program instructions are stored on the computer readable storage medium；The computer program refers to Enable any one the communication link connection method realized in above-described embodiment when being executed by processor.

It should be clear that the invention is not limited to specific configuration described above and shown in figure and processing. For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, several tools have been described and illustrated The step of body, is as example.But method process of the invention is not limited to described and illustrated specific steps, this field Technical staff can be variously modified, modification and addition after understanding spirit of the invention, or suitable between changing the step Sequence.

Functional block shown in structures described above block diagram can be implemented as hardware, software, firmware or their group It closes.When realizing in hardware, it may, for example, be electronic circuit, specific integrated circuit (ASIC), firmware appropriate, insert Part, function card etc..When being realized with software mode, element of the invention is used to execute program or the generation of required task Code section.Perhaps code segment can store in machine readable media program or the data-signal by carrying in carrier wave is passing Defeated medium or communication links are sent." machine readable media " may include any medium for capableing of storage or transmission information. The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), soft Disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can be via such as internet, inline The computer network of net etc. is downloaded.

It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device State certain methods or system.But the present invention is not limited to the sequence of above-mentioned steps, that is to say, that can be according in embodiment The sequence referred to executes step, may also be distinct from that the sequence in embodiment or several steps are performed simultaneously.

The above description is merely a specific embodiment, it is apparent to those skilled in the art that, For convenience of description and succinctly, the system, module of foregoing description and the specific work process of unit can refer to preceding method Corresponding process in embodiment, details are not described herein.It should be understood that scope of protection of the present invention is not limited thereto, it is any to be familiar with Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions, These modifications or substitutions should be covered by the protection scope of the present invention.

Claims

1. a kind of communication link connection method, which is characterized in that the described method includes:

When terminal is moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME, described the is inquired The first backup MME in one pond MME；

The second backup MME of the source MME is inquired by the first backup MME；

Pass through the second backup MME connection source MME.

2. the method according to claim 1, wherein the first backup MME includes: primary MME and spare MME, wherein the spare MME is the standby node of the primary MME.

3. according to the method described in claim 2, it is characterized in that, inquiring the of the source MME by the first backup MME Two backup MME include:

The second backup MME of the source MME is inquired by the primary MME.

4. according to the method described in claim 3, it is characterized in that, inquiring the second of the source MME by the primary MME After backup MM, the method also includes:

When the primary MME is without response, the second backup MM of the source MME is inquired by the spare MME.

5. the method according to claim 1, wherein passing through the second backup MME connection source MME packet It includes:

The wireless connection of the source MME Yu the target MME are established by the second backup MME；

The target MME obtains the contextual information of terminal VoLTE business on the source MME.

6. according to the method described in claim 5, it is characterized in that, obtaining the terminal in the source MME in the target MME After the contextual information of upper VoLTE business, the method also includes:

The target MME notice gateway SGW carries out bearing modification, and global unique interim UE mark GUTI is redistributed in request Value, and reply the terminal and complete tracing section updating TAU process.

7. the method according to claim 1, wherein the first backup MME inquired in the first pond MME it Before, the method also includes:

The interface IP address of the first backup MME is configured on the domain name system DNS server in the first pond MME.

8. the method according to claim 1, wherein the first backup MME packet in inquiry the first pond MME It includes:

The DNS query request of MME Code MMEC=00 is constructed according to MME group identification MMEGI；

The first backup MME in the first pond MME is inquired by DNS query request.

9. a kind of communication link attachment device, which is characterized in that described device includes:

Initiation module, for being moved to the target MME in the 2nd pond MME from the source MME in the pond first movement management entity MME in terminal When, inquire the first backup MME in the first pond MME；

Enquiry module, for inquiring the second backup MME of the source MME by the first backup MME；

Link block, for passing through the second backup MME connection source MME.

10. a kind of communication link connects equipment characterized by comprising at least one processor, at least one processor and The computer program instructions of storage in the memory, are realized when the computer program instructions are executed by the processor Such as method of any of claims 1-8.

11. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that when the calculating Such as method of any of claims 1-8 is realized when machine program instruction is executed by processor.