CN104581674A - Recovery method of terminating service and communication equipment - Google Patents
Recovery method of terminating service and communication equipment Download PDFInfo
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- CN104581674A CN104581674A CN201310483051.XA CN201310483051A CN104581674A CN 104581674 A CN104581674 A CN 104581674A CN 201310483051 A CN201310483051 A CN 201310483051A CN 104581674 A CN104581674 A CN 104581674A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/12—Mobility data transfer between location registers or mobility servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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Abstract
The invention discloses a recovery method of a terminating service and communication equipment. The recovery method comprises steps as follows: when a current called MSC (mobile switching center) breaks down, a target MSC receives a PRN (provide roaming number) message which is sent by an HSS (home subscriber server) or an HLR (home location register) and carries a paging indicator; the target MSC launches a paging request according to the paging indicator in the PRN message, so that an MME (mobility management entity) which a called terminal is attached to controls the called terminal to execute CSFB (circuit switch fallback) according to the paging request to achieve continuity of the terminating service. The recovery method and communication equipment facilitate voice continuity of the terminal in the 2G/3G network access process, and can effectively solve the problem that the terminating service cannot be performed when the MSC breaks down.
Description
Technical field
The application relates to communication technical field, specifically relates to a kind of restoration methods of callee function, also relates to a kind of communication equipment of callee function.
Background technology
Along with the high speed development of mobile communication technology, International Organization for standardization 3GPP proposes LTE(Long Term Evolution, Long Term Evolution) network architecture, provide the Radio Access Network of high bandwidth, there is many-sided advantages such as very high message transmission rate, low time delay, optimization grouped data.But, because LTE is not enough at first stage of construction coverage rate, so speech business still needs at the ripe 2G/3G(second generation/G mobile communication) network carries out.
In order to adapt to this situation, be currently suggested a kind of CSFB(Circuit Switch Fallback, circuit switching fall-back) technology, namely terminal resides in LTE network and carries out PS(Packet Switch, packet switching) business, speech business is carried out in the CS territory of falling back to 2G/3G network when having needed voice call service again.See Fig. 1, it is the application scenarios schematic diagram of a kind of circuit switching fall-back of prior art.Terminal 11 passes through base station 12 to MME(Mobility Management Entity, Mobility Management Entity) 13 initiation co-location renewals, carry out first being attached to MME13 when co-location upgrades, again by MME13 and MSC(Mobile Switching Center, mobile switching centre) the SGs interface set up between 14 is attached to MSC14.MSC14 management and control base station 15.Wherein, base station 12 corresponding E-UTRAN(Evolved UMTS Terrestrial Radio AccessNetwork, Evolved UMTS Terrestrial wireless access network), belong to PS territory, base station 15 corresponding UTRAN(UMTS Territorial Radio Access Network, UMTS Terrestrial radio access network) or GERAN(GSM EDGE Radio Access Network, GSM EDGE wireless access network), belong to CS territory.When MSC14 receives PRN(Provide Roaming Number, Provide Roaming Number) message time, can by MME13 to terminal 11 distributing paging, triggering terminal 11 is from PS domain dropping to CS territory, responded the paging of MSC14 by base station 15, thus the callee function of terminal 11 is carried out at UTRAN or GERAN.In the network of CS territory, VLR Visitor Location Register VLR(Visited Location Register) be usually physically deployed in MSC together with, major function has been and HSS(Home Subscriber Server, home subscriber server)/HLR(HomeLocation Register, attaching position register) between customer location registration and upgrade, user contracting data obtains and the flow process such as renewal.Especially, in CSFB technology, the SGs flow process that VLR completes between MME is mutual, comprises the SGs position updating request receiving MME and initiate, sends paging request etc. to MME.
Present inventor finds in long-term research and development, and in existing circuit switching fall-back technology, if MSC14 breaks down, the callee function of terminal 11 just cannot carry out.Only when terminal 11 asks the beginning to exhale business, for terminal 11 provides the RNC(Radio NetworkController of service, radio network controller)/BSC(Base Station Controller, base station controller) select new MSC for terminal 11, or terminal 11 is initiatively carried out location updating and is registered to other MSC, terminal could recover callee function.
Summary of the invention
In view of this, this application provides a kind of restoration methods and communication equipment of callee function, to solve the problem that when MSC breaks down, callee function cannot carry out.
For solving the problem, the application's first aspect provides a kind of restoration methods of callee function, and restoration methods comprises: when current called MS C breaks down, and target MSC receives the PRN message of carrying paging instruction that HSS or HLR sends; Target MSC initiates paging request according to the paging instruction in PRN message, controls terminal called execution CSFB continue to complete callee function to make the MME accompanying by terminal called according to paging request.
In conjunction with first aspect, in the implementation that the first is possible, paging request carries CS and recovers instruction, recovers instruction judge whether to process paging request to make MME according to CS.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible, paging is designated as address or the title of MME, and the step that target MSC initiates paging request according to the paging instruction in PRN message is specially: target MSC initiates paging request according to the address in PRN message or title to the MME corresponding with address or name.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the third is possible, paging instruction is used for showing that terminal called is attached to MME, the step that target MSC initiates paging request according to the paging instruction in PRN message is specially: target MSC initiates paging request according to the paging instruction in PRN message at least one MME corresponding with target MSC, and at least one MME comprises the MME accompanying by terminal called.
In conjunction with first aspect, in the 4th kind of possible implementation, paging request is IMSI paging request or TMSI paging request.
In conjunction with first aspect, in the 5th kind of possible implementation, target MSC and current called MS C are arranged in same MSC pond.
For solving the problem, the application's second aspect provides a kind of restoration methods of callee function, and restoration methods comprises: when terminal called has callee function, HSS or HLR judges whether current called MS C breaks down; If current called MS C breaks down, the PRN message of carrying paging instruction is routed to target MSC by HSS or HLR, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.
In conjunction with second aspect, in the implementation that the first is possible, when terminal called has callee function, before HSS or HLR judges the step whether current called MS C breaks down, restoration methods also comprises: after terminal called is attached to current called MS C, HSS or HLR preserves address or the title of current called MS C, and preserves address or the title of target MSC simultaneously.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second is possible, HSS or HLR judges that the step whether current called MS C breaks down comprises: HSS or HLR sends PRN message to current called MS C; HSS or HLR judges the response message whether receiving the PRN message that current called MS C sends in the given time; If do not receive response message in the given time, HSS or HLR judges that current called MS C breaks down.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the third is possible, HSS or HLR judges that the step whether current called MS C breaks down comprises: HSS or HLR receives current called MS C at current time and report heartbeat acknowledgment messages; HSS or HLR judges whether again receive heartbeat acknowledgment messages in the given time; If again do not receive heartbeat acknowledgment messages in the given time, HSS or HLR judges that current called MS C breaks down.
In conjunction with second aspect, in the 4th kind of possible implementation, target MSC and current called MS C are arranged in same MSC pond.
For solving the problem, the application's third aspect provides a kind of restoration methods of callee function, restoration methods comprises: the paging request that the MME receiving target MSC accompanying by terminal called initiates according to the paging instruction in PRN message, wherein, target MSC, when current called MS C breaks down, receives the PRN message of carrying paging instruction from HSS or HLR; MME controls terminal called execution CSFB according to paging request and continues to complete callee function.
In conjunction with the third aspect, in the implementation that the first is possible, MME controls terminal called according to paging request and performs CSFB and comprise with the step completing callee function and continue: MME judges that whether comprising CS in paging request recovers to indicate; If comprise CS to recover instruction, MME controls terminal called execution CSFB according to paging request and continues to complete callee function.
In conjunction with the first possible execution mode of the third aspect, in the implementation that the second is possible, restoration methods also comprises: if do not comprise CS to recover instruction, MME refusal process paging request.
For solving the problem, the application's fourth aspect provides a kind of communication equipment of callee function, communication equipment comprises receiver module and paging module, wherein, receiver module is used for when current called MS C breaks down, receive the PRN message of carrying paging instruction that HSS or HLR sends, and PRN message is sent to paging module; Paging module is used for receiving PRN message from receiver module, and initiates paging request according to the paging instruction in PRN message, performs CSFB continue to complete callee function to make the MME accompanying by terminal called according to paging request control terminal called.
In conjunction with fourth aspect, in the implementation that the first is possible, paging module also recovers instruction for carrying CS in paging request, recovers instruction judge whether to process paging request to make MME according to CS.
In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the second is possible, paging is designated as address or the title of MME, and paging module is specifically for initiating paging request according to the address in PRN message or title to the MME corresponding with address or name.
In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the third is possible, paging instruction is used for showing that terminal called is attached to MME, paging module is specifically for initiating paging request according to the paging instruction in PRN message at least one MME corresponding with target MSC, and at least one MME comprises the MME accompanying by terminal called.
In conjunction with fourth aspect, in the 4th kind of possible implementation, paging request is IMSI paging request or TMSI paging request.
For solving the problem, the application the 5th aspect provides a kind of communication equipment of callee function, and communication equipment comprises judge module and sending module, and wherein, judge module is used for when terminal called has callee function, judges whether current called MS C breaks down; When sending module breaks down for determining current called MS C at judge module, the PRN message of carrying paging instruction is routed to target MSC, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.
In conjunction with the 5th aspect, in the implementation that the first is possible, communication equipment also comprises preservation module, wherein, preserve module to be used for after terminal called is attached to current called MS C, preserve address or the title of current called MS C, and preserve address or the title of target MSC simultaneously.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in the implementation that the second is possible, communication equipment also comprises receiver module, and wherein, sending module is used for sending PRN message to current called MS C; Receiver module is used for after sending module sends PRN message, the response message of the PRN message that the current called MS C of wait-receiving mode sends; Judge module specifically for judging whether receiver module receives response message in the given time, when determine do not receive response message in the given time time, judge that current called MS C breaks down.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in the implementation that the third is possible, communication equipment also comprises receiver module, wherein, and the heartbeat acknowledgment messages that receiver module reports for receiving current called MS C; Judge module specifically at receiver module after current time receives heartbeat acknowledgment messages, judge whether receiver module receives heartbeat acknowledgment messages again in the given time, when determine again do not receive heartbeat acknowledgment messages in the given time time, judge that current called MS C breaks down.
In conjunction with the 5th aspect, in the 4th kind of possible implementation, target MSC and current called MS C are arranged in same MSC pond.
For solving the problem, the application the 6th aspect provides a kind of communication equipment of callee function, terminal called is attached to communication equipment, communication equipment comprises receiver module and paging module, and wherein, receiver module is used for the paging request that receiving target MSC initiates according to the paging instruction in PRN message, and paging request is sent to paging module, wherein, target MSC, when current called MS C breaks down, receives the PRN message of carrying paging instruction from HSS or HLR; Paging module is used for from the request of receiver module paging receiving, and continues to complete callee function according to paging request control terminal called execution CSFB.
In conjunction with the 6th aspect, in the implementation that the first is possible, paging module comprises judging unit and paging unit, and wherein, judging unit is used for from the request of receiver module paging receiving, and judges that whether comprising CS in paging request recovers instruction; When paging unit comprising CS recovery instruction for determining at judging unit, controlling terminal called execution CSFB according to paging request and continuing to complete callee function.
In conjunction with the first possible implementation of the 6th aspect, in the implementation that the second is possible, paging unit also for determine at judging unit do not comprise CS recover instruction time, refusal process paging request.
The restoration methods of the callee function of the application and communication equipment are when current called MS C breaks down, the PRN message of carrying paging instruction of HSS or HLR transmission is received by target MSC, thus target MSC can initiate paging request according to paging instruction, MME controls terminal called execution CSFB according to paging request and continues to complete callee function, in this way, be conducive to keeping the voice continuity of terminal in access 2G/3G network development process, thus the problem that when MSC breaks down, callee function cannot carry out can be solved.
Accompanying drawing explanation
Fig. 1 is the application scenarios schematic diagram of a kind of circuit switching fall-back of prior art;
Fig. 2 is the schematic flow sheet of restoration methods first embodiment of callee function of the present invention;
Fig. 3 is the schematic flow sheet of restoration methods second embodiment of callee function of the present invention;
Fig. 4 is the schematic flow sheet of restoration methods the 3rd embodiment of callee function of the present invention;
Fig. 5 is the schematic flow sheet of restoration methods the 4th embodiment of callee function of the present invention;
Fig. 6 is the schematic flow sheet of restoration methods the 5th embodiment of callee function of the present invention;
Fig. 7 is the Signalling exchange schematic diagram of restoration methods the 6th embodiment of callee function of the present invention;
Fig. 8 is the structural representation of communication equipment first embodiment of callee function of the present invention;
Fig. 9 is the structural representation of communication equipment second embodiment of callee function of the present invention;
Figure 10 is the structural representation of communication equipment the 3rd embodiment of callee function of the present invention;
Figure 11 is the structural representation of communication equipment the 4th embodiment of callee function of the present invention;
Figure 12 is the structural representation of communication equipment the 5th embodiment of callee function of the present invention;
Figure 13 is the structural representation of communication equipment the 6th embodiment of callee function of the present invention.
Embodiment
In below describing, in order to illustrate instead of in order to limit, propose the detail of such as particular system structure, interface, technology and so on, understand the application thoroughly to cut.But, it will be clear to one skilled in the art that and also can realize the application in other execution mode not having these details.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders the description of the application.
Except this otherwise noted, the MSC hereinafter occurred all refers to MSC/VLR or MSCServer/VLR.Be described below in conjunction with accompanying drawing and concrete execution mode.
See Fig. 2, it is the schematic flow sheet of restoration methods first embodiment of callee function of the present invention.The restoration methods of callee function comprises the following steps:
Step S21: when current called MS C breaks down, target MSC receives the PRN message of carrying paging instruction that HSS or HLR sends.
Wherein, receive before PRN message at target MSC, before HSS or HLR sends PRN message, first PRN message is sent to current called MS C by HSS or HLR, but breaks down due to current called MS C, and PRN message will be sent to or be routed to target MSC.
In the present embodiment, current called MS C and target MSC can be arranged in same MSC pond.In the framework of MSC pond, all MSC keep communication connection each other, when one of them MSC breaks down, this MSC breaks down to have at least another MSC to sense, then at least another MSC can select a MSC to replace the MSC broken down, selected MSC is target MSC, and target MSC can be the MSC sensing that current called MS C breaks down.In this case, PRN message just can be delivered to target MSC by the mode of route.
In other embodiments, that perceive that current called MS C breaks down also may be STP(Signaling Transfer Point in PRN message routing procedure, Signalling Transfer Point), now PRN message will be routed to target MSC by this STP.
Step S22: target MSC initiates paging request according to the paging instruction in PRN message, controls terminal called execution CSFB to make the MME accompanying by terminal called according to paging request and continues to complete callee function.
Wherein, paging instruction can be address or the title of MME, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI(International Mobile SubscriberIdentity, international mobile subscriber identity) paging request or TMSI(Temporary MobileSubscriber Identity) paging request.
The log-on message of MME is generally stored in current called MS C, if current called MS C does not break down, current called MS C can by log-on message paging to MME.Although target MSC does not preserve the log-on message of MME, but HHS or HLR has just obtained the log-on message of MME by current called MS C when current called MS C does not break down, thus in the PRN message sent, add paging instruction, be used to indicate target MSC and send paging request to MME.The log-on message of MME generally refers to address or the title of MME.
The restoration methods of the callee function provided by the present embodiment, target MSC initiates paging request by the paging instruction in PRN message, to determine the MME accompanying by terminal called, makes MME control terminal called execution CSFB operation and continues to complete callee function.Solve the problem that when MSC breaks down, callee function cannot carry out, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.
See Fig. 3, it is the schematic flow sheet of restoration methods second embodiment of callee function of the present invention.The restoration methods of callee function comprises the following steps:
Step S31:HSS or HLR carries address or the title of MME in PRN message, and PRN message is sent to current called MS C.
Wherein, before current called MS C breaks down, terminal called initiates co-location update request.In the process, terminal called is when being attached to MME by LTE, and MME sends location update request message to HSS/HLR, by the address of MME or name registration in HSS/HLR.MME triggers MSC by SGs interface simultaneously and initiates CS territory position updating request to HSS/HLR, by the number of MSC or be registered in HSS/HLR.By the number of current called MS C or mark, HSS or HLR can judge that terminal called in the lte networks, and then in PRN message, carry address or the title of MME; Or the indication information that HSS or HLR is carried in location update request message by current called MS C, the address of the MME such as carried in location update request message or title, or indicate this location update request message be due to co-location update request trigger information, know that terminal called in the lte networks, and then in PRN message, carry address or the title of MME.
Step S32: when current called MS C breaks down, PRN message is routed to the target MSC being arranged in same MSC pond with current called MS C.
Wherein, in the framework of MSC pond, all MSC keep communication connection each other, when one of them MSC breaks down, this MSC breaks down to have at least another MSC to sense, then at least another MSC can select a MSC to replace the MSC broken down, and selected MSC is target MSC, and target MSC can be the MSC sensing that current called MS C breaks down.In this case, PRN message just can be delivered to target MSC by the mode of route.In the present embodiment, target MSC is a MSC that in MSC pond, load is minimum except current called MS C or the MSC meeting certain loads equalization algorithm most.
Step S33: target MSC initiates paging request according to the address in PRN message or title to the MME corresponding with address or name, and in paging request, carry CS recovery instruction.
Wherein, owing to carrying address or the title of MME in PRN message, target MSC just can initiate paging request according to this address or title to MME.
Step S34: the MME accompanying by terminal called judges that whether carrying CS in paging request recovers instruction, if carry CS to recover instruction, and process paging request, and carry out step S35.
Wherein, if do not carry CS to recover instruction, refusal paging request.If need between MME and target MSC to carry out Signalling exchange, then need to set up SGs interface.But because target MSC did not receive the position updating request of MME transmission, therefore, before target MSC and MME, do not set up SGs interface.Then MME can not determine that whether the paging request that target MSC is sent is effective.And CS recovers instruction, and to be used to indicate this paging request of MME effective.
Step S35:MME controls terminal called execution CSFB according to paging request and continues to complete callee function.
Wherein, after terminal called performs into CSFB, can return page-response message to target MSC, target MSC sets up paging with terminal after receiving this page-response message, completes the callee function of terminal called.
The restoration methods of the callee function that the present embodiment provides, target MSC initiates paging request by the address of MME or title to MME, makes MME control terminal called and performs CSFB and continue to complete callee function.The problem that when MSC breaks down, callee function cannot carry out can be solved, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.And due to the address that comprises MME in PRN message or title, target MSC can fast searching to MME.
See Fig. 4, it is the schematic flow sheet of restoration methods the 3rd embodiment of callee function of the present invention.The restoration methods of callee function comprises the following steps:
Step S41:HSS or HLR carries paging instruction in PRN message, and PRN message is sent to current called MS C, and wherein, paging instruction is used for showing that terminal called is attached to MME.
Wherein, paging instruction can be bit, also can be string format, represents and needs the MME to terminal called is adhered to by LTE to initiate paging request.Before current called MS C breaks down, terminal called initiates co-location update request.In the process, terminal called is when being attached to MME by LTE, and MME sends location update request message to HSS/HLR, by the address of MME or name registration in HSS/HLR.MME triggers MSC by SGs interface simultaneously and initiates CS territory position updating request to HSS/HLR, by the number of MSC or be registered in HSS/HLR.By the number of current called MS C or mark, HSS or HLR can judge that terminal called in the lte networks, and then in PRN message, carry paging instruction; Or the indication information that HSS or HLR is carried in location update request message by current called MS C, the address of the MME such as carried in location update request message or title, or indicate this location update request message be due to co-location update request trigger information, know that terminal called in the lte networks, and then in PRN message, carry paging instruction.
Step S42: when current called MS C breaks down, PRN message is routed to the target MSC being arranged in same MSC pond with current called MS C.
Wherein, step S42 is with step S32.
Step S43: target MSC initiates paging request according to the paging instruction in PRN message at least one MME corresponding with target MSC, and in paging request, carry CS recovery instruction, at least one MME comprises the MME accompanying by terminal called.
Wherein, according to paging instruction, target MSC judges that terminal called is attached to MME, but due to the address of not knowing MME or title, so to all MME initiation paging requests of its correspondence.Because target MSC and current called MS C are positioned at same MSC pond, so MME corresponding to target MSC must comprise MME corresponding to current called MS C.Therefore, the MME accompanying by terminal called will inevitably receive paging request and respond this paging request, and other MME can return paging failure message.
Step S44: the MME accompanying by terminal called judges that whether carrying CS in paging request recovers instruction, if carry CS to recover instruction, and process paging request, and carry out step S45.
Step S45:MME controls terminal called execution CSFB according to paging request and continues to complete callee function.
Wherein, step S44, step S45 are with step S34, step S35.
The restoration methods of the callee function that the present embodiment provides, target MSC initiates paging request by the address of MME or title to MME, makes MME control terminal called and performs CSFB and continue to complete callee function.The problem that when MSC breaks down, callee function cannot carry out can be solved, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.
See Fig. 5, it is the schematic flow sheet of restoration methods the 4th embodiment of callee function of the present invention.The restoration methods of callee function comprises the following steps:
Step S51: when terminal called has callee function, HSS or HLR judges whether current called MS C breaks down.
Wherein, terminal called is when request is attached to MME, and MME according to attachment request generation derivation number, will can derive VLR information according to this derivation number.Because MSC and VLR binds together usually, thus current called MS C can be determined.MME sends position updating request to current called MS C, and current called MS C receives position updating request carries out CS territory location updating to HSS or HLR, thus terminal called completes the attachment of LTE network.The callee function of terminal called or beginning business of exhaling all are completed by current called MS C afterwards.
In the present embodiment, after terminal called is attached to current called MS C, HSS or HLR preserves address or the title of current called MS C, and preserves address or the title of target MSC simultaneously.Target MSC can be selected by current called MS C, also can be selected by HSS or HLR.Particularly, if target MSC is selected by current called MS C, when so current called MS C carries out the location updating in CS territory, the address or title of carrying target MSC can be sent in the lump when sending address or title.If target MSC is selected by HSS or HLR, so HSS or HLR can select a MSC as target MSC when preserving address or the title of current called MS C, and preserves address or the title of target MSC.Further, if target MSC and current called MS C are arranged in same MSC pond, so target MSC is the MSC of least-loaded except current called MS C in MSC pond.
In the present embodiment, HSS or HLR judges that the step whether current called MS C breaks down comprises: HSS or HLR sends PRN message to current called MS C; HSS or HLR judges the response message whether receiving the PRN message that current called MS C sends in the given time; If do not receive response message in the given time, HSS or HLR judges that current called MS C breaks down.If current called MS C does not break down, when receiving PRN message, a response message can be sent in time, to notify that HSS or HLR successfully receives PRN message.So according to whether receiving response message, HSS or HLR just can judge whether current called MS C breaks down.
In other embodiments, HSS or HLR judges that the step whether current called MS C breaks down comprises: HSS or HLR receives current called MS C at current time and report heartbeat acknowledgment messages; HSS or HLR judges whether again receive heartbeat acknowledgment messages in the given time; If again do not receive heartbeat acknowledgment messages in the given time, HSS or HLR judges that current called MS C breaks down.After current called MS C is registered to HSS or HLR, HSS or HLR specifies that current called MS C must send a heartbeat acknowledgment messages every the scheduled time, to confirm that current called MS C does not break down.HSS or HLR can start timing at current time, if timing time is less than the scheduled time and again receives heartbeat acknowledgment messages, then judge that now current called MS C does not break down, if timing time is greater than the scheduled time and does not also again receive heartbeat acknowledgment messages, then judge that now current called MS C breaks down.
Step S52: if current called MS C breaks down, the PRN message of carrying paging instruction is routed to target MSC by HSS or HLR, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.
Wherein, current called MS C and target MSC can be arranged in same MSC pond.In the framework of MSC pond, all MSC keep communication connection each other, when one of them MSC breaks down, this MSC breaks down to have at least another MSC to sense, then at least another MSC can select a MSC to replace the MSC broken down, selected MSC is target MSC, and target MSC can be the MSC sensing that current called MS C breaks down.In this case, PRN message just can be delivered to target MSC by the mode of route.Wherein, paging instruction can be address or the title of MME, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI paging request or TMSI paging request.
The restoration methods of the callee function that the present embodiment provides, HSS or HLR is determining after current called MS C breaks down, the PRN message of carrying paging instruction is routed to target MSC, target MSC initiates paging request by paging instruction to MME, make MME control terminal called execution CSFB to continue to complete callee function, thus solve the problem that when MSC breaks down, callee function cannot carry out, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.
See Fig. 6, it is the schematic flow sheet of restoration methods the 5th embodiment of callee function of the present invention.The restoration methods of callee function comprises the following steps:
Step S61: the MME receiving target MSC accompanying by the terminal called paging request of initiating according to the paging instruction in PRN message, wherein, target MSC, when current called MS C breaks down, receives the PRN message of carrying paging instruction from HSS or HLR.
Wherein, paging instruction can be address or the title of MME, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI paging request or TMSI paging request.
The log-on message of MME is generally stored in current called MS C, if current called MS C does not break down, current called MS C can by log-on message paging to MME.Although target MSC does not preserve the log-on message of MME, but HHS or HLR has just obtained the log-on message of MME by current called MS C when current called MS C does not break down, thus paging instruction is just added in the PRN message sent, be used to indicate target MSC and send paging request to MME.The log-on message of MME generally refers to address or the title of MME.
Step S62:MME controls terminal called execution CSFB according to paging request and continues to complete callee function.
The restoration methods of the callee function that the present embodiment provides, after current called MS C breaks down, the paging request that MME receiving target MSC sends according to the paging instruction in PRN message, MME controls terminal called execution CSFB according to paging request and continues to complete callee function, thus solve the problem that when MSC breaks down, callee function cannot carry out, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.
See Fig. 7, it is the Signalling exchange schematic diagram of restoration methods the 6th embodiment of callee function of the present invention.The present embodiment is as a kind of application scenarios of the restoration methods of callee function, and Signalling exchange is as follows:
S701:HLR preserves the address of current called MS C or the address of title and target MSC or title.
Wherein, when terminal called is attached to LTE network, HLR can preserve address or the title of current called MS C, can preserve address or the title of target MSC simultaneously.Target MSC can be selected by HLR, also can be selected by current called MS C.In the present embodiment, HLR can be replaced by HSS.
S702: when terminal called has callee function, HLR judges whether current called MS C breaks down, and breaks down, carry out S603 if determine current called MS C.
The PRN message of the address or title of carrying MME is routed to target MSC by S703:HLR.
Wherein, current called MS C and target MSC can be arranged in same MSC pond, and in the framework of MSC pond, all MSC keep communication connection each other, so PRN message can route to target MSC.
S704: target MSC initiates IMSI paging request according to the address in PRN message or title to MME.
Wherein, target MSC can lock MME according to address or title, thus initiates IMSI paging request to MME.
S705:MME judges that whether comprising CS in paging request recovers instruction, if comprise CS to recover instruction, carries out S706.
Wherein, CS recovers instruction to be used to indicate this paging request of MME effective.Owing to not setting up SGs interface between MME and target MSC, MME can not determine that whether the paging request received is effective.If detect that comprising CS recovers instruction, then MME judges that target MSC replaces current called MS C, so start to process paging request.If detect that not comprising CS recovers instruction, then MME judges that by mistake this paging request sends out, so refuse this paging request.
S706:MME controls terminal called according to paging request and performs CSFB.
S707: target MSC carries out paging to terminal called, completes callee function and continues.
See Fig. 8, it is the structural representation of communication equipment first embodiment of callee function of the present invention.Communication equipment comprises receiver module 81 and paging module 82.
Receiver module 81, for when current called MS C breaks down, receives the PRN message of carrying paging instruction that HSS or HLR sends, and PRN message is sent to paging module 82.Before receiver module 81 receives PRN message, and send before PRN message at HSS or HLR, first PRN message is sent to current called MS C by HSS or HLR, but breaks down due to current called MS C, and PRN message will be sent to or be routed to receiver module 81.
Paging module 82 for receiving PRN message from receiver module 81, and initiates paging request according to the paging instruction in PRN message, controls terminal called execution CSFB continue to complete callee function to make the MME accompanying by terminal called according to paging request.Paging instruction can be address or the title of MME, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI paging request or TMSI paging request.
In the present embodiment, paging module 82 also recovers instruction for carrying CS in paging request, recovers instruction judge whether to process paging request to make MME according to CS.
Particularly, paging instruction can be address or the title of MME, or for showing that terminal called is attached to MME.
If paging is designated as address or the title of MME, paging module 82 is specifically for initiating paging request according to the address in PRN message or title to the MME corresponding with address or name.Owing to carrying address or the title of MME in PRN message, paging module 82 can initiate paging request according to this address or title directly to MME.
If paging instruction is used for showing that terminal called is attached to MME, paging module 82 is specifically for initiating paging request according to the paging instruction in PRN message at least one MME corresponding with target MSC, and at least one MME comprises the MME accompanying by terminal called.MME so accompanying by terminal called will inevitably receive paging request and respond this paging request, and other MME can return paging failure message.
See Fig. 9, it is the structural representation of communication equipment second embodiment of callee function of the present invention.Communication equipment comprises preserves module 91, judge module 92, sending module 93 and receiver module 94.Judge module 92, sending module 93 and receiver module 94 are connected to each other.
Preserve module 91 for after being attached to current called MS C at terminal called, preserve address or the title of current called MS C, and preserve address or the title of target MSC simultaneously.In the present embodiment, target MSC and current called MS C are arranged in same MSC pond.After terminal called is attached to current called MS C, preserves address or title that module 91 preserves current called MS C, and preserve address or the title of target MSC simultaneously.Target MSC can be selected by current called MS C, also can be selected by communication equipment.Particularly, if target MSC is selected by current called MS C, when so current called MS C carries out the location updating in CS territory, the address or title of carrying target MSC can be sent in the lump when sending address or title.If target MSC is selected by communication equipment, so preserve module 91 and a MSC can be selected as target MSC when preserving address or the title of current called MS C, and preserve address or the title of target MSC.Further, if target MSC and current called MS C are arranged in same MSC pond, so target MSC is the MSC of least-loaded except current called MS C in MSC pond.
Judge module 92, for when terminal called has callee function, judges whether current called MS C breaks down.Terminal called is when request is attached to MME, and MME according to attachment request generation derivation number, will can derive VLR information according to this derivation number.Because MSC and VLR binds together usually, thus current called MS C can be determined.MME sends position updating request to current called MS C, and current called MS C receives position updating request carries out CS territory location updating to communication equipment, thus terminal called completes the attachment of LTE network.The callee function of terminal called or beginning business of exhaling all are completed by current called MS C afterwards.
When sending module 93 breaks down for determining current called MS C at judge module 92, the PRN message of carrying paging instruction is routed to target MSC, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.Current called MS C and target MSC can be arranged in same MSC pond.In the framework of MSC pond, all MSC keep communication connection each other, when one of them MSC breaks down, this MSC breaks down to have at least another MSC to sense, then at least another MSC can select a MSC to replace the MSC broken down, selected MSC is target MSC, and target MSC can be the MSC sensing that current called MS C breaks down.In this case, PRN message just can be delivered to target MSC by the mode of route.Wherein, paging instruction can be address or the title of MME, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI paging request or TMSI paging request.
Particularly, sending module 93, also for when terminal called has callee function, sends PRN message to current called MS C.Receiver module 94 for after sending module 93 sends PRN message, the response message of the feedback PRN message that the current called MS C of wait-receiving mode sends.Judge module 92 specifically for judging whether receiver module 94 receives response message in the given time, when determine do not receive response message in the given time time, judge that current called MS C breaks down.If current called MS C does not break down, when receiving PRN message, a response message can be sent in time, to notify that communication equipment successfully receives PRN message.So according to whether receiving response message, judge module 92 just can judge whether current called MS C breaks down.
In other embodiments, the heartbeat acknowledgment messages that reports for receiving current called MS C of receiver module 94.Judge module 92 specifically at receiver module 94 after current time receives heartbeat acknowledgment messages, judge whether receiver module 94 receives heartbeat acknowledgment messages again in the given time, when determine again do not receive heartbeat acknowledgment messages in the given time time, judge that current called MS C breaks down.After current called MS C is registered to communication equipment, communication equipment specifies that current called MS C must send a heartbeat acknowledgment messages every the scheduled time, to confirm that current called MS C does not break down.Communication equipment can start timing at current time, if timing time is less than the scheduled time and again receives heartbeat acknowledgment messages, then judge that now current called MS C does not break down, if timing time is greater than the scheduled time and does not also again receive heartbeat acknowledgment messages, then judge that now current called MS C breaks down.
As a modification of the present embodiment, communication equipment only can comprise judge module 92 and sending module 93, and judge module 92, for when terminal called has callee function, judges whether current called MS C breaks down.When sending module 93 breaks down for determining current called MS C at judge module 92, the PRN message of carrying paging instruction is routed to target MSC, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.
See Figure 10, it is the structural representation of communication equipment the 3rd embodiment of callee function of the present invention.Communication equipment comprises receiver module 101 and paging module 102.
The paging request that receiver module 101 is initiated according to the paging instruction in PRN message for receiving target MSC, and paging request is sent to paging module 102, wherein, target MSC, when current called MS C breaks down, receives the PRN message of carrying paging instruction from HSS or HLR.Paging instruction can be address or the title of communication equipment, also may be used for showing that terminal called is attached to MME.Paging request can be IMSI paging request or TMSI paging request.The log-on message of communication equipment is generally stored in current called MS C, if current called MS C does not break down, current called MS C can by log-on message paging to communication equipment.Although target MSC does not preserve the log-on message of communication equipment, but HHS or HLR has just obtained the log-on message of communication equipment by current called MS C when current called MS C does not break down, thus paging instruction is just added in the PRN message sent, be used to indicate target MSC and send paging request to communication equipment.The log-on message of communication equipment generally refers to address or the title of communication equipment.
Paging module 102 for from the request of receiver module 101 paging receiving, and controls terminal called according to paging request and performs CSFB and continue to complete callee function.
In the present embodiment, paging module 102 can comprise judging unit 1021 and paging unit 1022.Judging unit 1021 for from the request of receiver module 101 paging receiving, and judges that whether comprising CS in paging request recovers instruction.When paging unit 1022 comprises CS recovery instruction for determining at judging unit 1021, control terminal called execution CSFB according to paging request to continue to complete callee function, and for determine at judging unit 1021 do not comprise CS recover instruction time, refusal process paging request.It is effective that CS recovery instruction is used to indicate this paging request of communication equipment.Owing to not setting up SGs interface between communication equipment and target MSC, communication equipment can not determine that whether the paging request received is effective.If detect that comprising CS recovers instruction, then judging unit 1021 judges that target MSC replaces current called MS C, so start to process paging request.If detect that not comprising CS recovers instruction, then judging unit 1021 judges that by mistake this paging request sends out, so refuse this paging request.
See Figure 11, it is the structural representation of communication equipment the 4th embodiment of callee function of the present invention.Communication equipment comprises processor (processer) 111, receiver (receiver) 112, transmitter (emitter) 113, random-access memory (ram) 114, read-only memory (ROM) 115, bus 116 and network interface unit (Network Interface Unit) 117.Wherein, processor 111 couples receiver 112, transmitter 113, random access memory 114, read-only memory 115 and network interface unit 117 respectively by bus 116.Wherein, when needs operational communications equipment, by being solidificated in the basic input output system (BIOS) in read-only memory 115 or the boot loader guidance system in embedded system starts, directs communication equipment enters normal operating condition.After communication equipment enters normal operating condition, run application (Application Programs) and operating system (OS) in random access memory 114, makes:
Receiver 112, when current called moving exchanging center MSC breaks down, receives the PRN message of carrying paging instruction that HSS or HLR sends.
Processor 111 initiates paging request according to the paging instruction in PRN message, controls terminal called execution CSFB continue to complete callee function to make the MME accompanying by terminal called according to paging request.
The specific implementation process of processor 111 please refer to restoration methods and the communication equipment of the callee function of previous embodiment, no longer describes in detail herein.
See Figure 12, it is the structural representation of communication equipment the 5th embodiment of callee function of the present invention.Communication equipment comprises processor (processer) 121, receiver (receiver) 122, transmitter (emitter) 123, random-access memory (ram) 124, read-only memory (ROM) 125, bus 126 and network interface unit (Network Interface Unit) 127.Wherein, processor 121 couples receiver 122, transmitter 123, random access memory 124, read-only memory 125 and network interface unit 127 respectively by bus 126.Wherein, when needs operational communications equipment, by being solidificated in the basic input output system (BIOS) in read-only memory 125 or the boot loader guidance system in embedded system starts, directs communication equipment enters normal operating condition.After communication equipment enters normal operating condition, run application (Application Programs) and operating system (OS) in random access memory 124, makes:
Processor 121, when having callee function when terminal called, judges whether current called MS C breaks down.
Transmitter 123 processor 121 determine current called MS C break down time, the PRN message of carrying paging instruction is routed to target MSC, initiate paging request for target MSC according to the paging instruction in PRN message, make the MME accompanying by terminal called control terminal called execution CSFB according to paging request and continue to complete callee function.
The specific implementation process of processor 121 please refer to restoration methods and the communication equipment of the callee function of previous embodiment, no longer describes in detail herein.
See Figure 13, it is the structural representation of communication equipment the 6th embodiment of callee function of the present invention.Communication equipment comprises processor (processer) 131, receiver (receiver) 132, transmitter (emitter) 133, random-access memory (ram) 134, read-only memory (ROM) 135, bus 136 and network interface unit (Network Interface Unit) 137.Wherein, processor 131 couples receiver 132, transmitter 133, random access memory 134, read-only memory 135 and network interface unit 137 respectively by bus 136.Wherein, when needs operational communications equipment, by being solidificated in the basic input output system (BIOS) in read-only memory 135 or the boot loader guidance system in embedded system starts, directs communication equipment enters normal operating condition.After communication equipment enters normal operating condition, run application (Application Programs) and operating system (OS) in random access memory 134, makes:
The paging request that receiver 132 receiving target MSC initiates according to the paging instruction in PRN message, wherein, target MSC, when current called MS C breaks down, receives the PRN message of carrying paging instruction from HSS or HLR.
Processor 131 controls terminal called execution CSFB according to paging request and continues to complete callee function.
The specific implementation process of processor 131 please refer to restoration methods and the communication equipment of the callee function of previous embodiment, no longer describes in detail herein.
By the way, the restoration methods of the callee function of the application and communication equipment are when current called MS C breaks down, the PRN message of carrying paging instruction of HSS or HLR transmission is received by target MSC, thus target MSC can initiate paging request according to paging instruction, MME controls terminal called execution CSFB according to paging request and continues to complete callee function, thus solve the problem that when MSC breaks down, callee function cannot carry out, be conducive to the voice continuity keeping terminal in access 2G/3G network development process and the reliability improving paging.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, it can be by some interfaces that shown or discussed coupling each other or direct-coupling or communication connect, and the indirect coupling of device or unit or communication connect, and can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of present embodiment scheme.
In addition, each functional unit in each execution mode of the application can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical scheme of the application contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, management server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The foregoing is only the embodiment of the application; not thereby the protection range of the application is limited; every utilize present specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in the scope of patent protection of the application.
Claims (27)
1. a restoration methods for callee function, is characterized in that, described restoration methods comprises:
When current called moving exchanging center MSC breaks down, target MSC receives the PRN message that Provides Roaming Number of carrying paging instruction that home subscriber server HSS or attaching position register HLR sends;
Described target MSC initiates paging request according to the paging instruction in described PRN message, controls described terminal called executive circuit exchange falling CSFB continue to complete callee function to make the Mobility Management Entity MME accompanying by terminal called according to described paging request.
2. restoration methods according to claim 1, is characterized in that, described paging request carries circuit switching (CS) and recovers instruction, recovers instruction judge whether to process described paging request to make described MME according to described CS.
3. restoration methods according to claim 1 and 2, is characterized in that, described paging is designated as address or the title of described MME, and the step that described target MSC initiates paging request according to the paging instruction in described PRN message is specially:
Described target MSC initiates paging request according to the described address in described PRN message or title to the MME corresponding with described address or name.
4. restoration methods according to claim 1 and 2, is characterized in that, described paging instruction is used for showing that described terminal called is attached to described MME, and the step that described target MSC initiates paging request according to the paging instruction in described PRN message is specially:
Described target MSC initiates paging request according to the paging instruction in described PRN message at least one MME corresponding with described target MSC, and at least one MME described comprises the described MME accompanying by described terminal called.
5. restoration methods according to claim 1, is characterized in that, described paging request is international mobile subscriber identity IMSI paging request or interim identity TMSI paging request.
6. restoration methods according to claim 1, is characterized in that, described target MSC and described current called MS C are arranged in same MSC pond.
7. a restoration methods for callee function, is characterized in that, described restoration methods comprises:
When terminal called has callee function, HSS or HLR judges whether current called MS C breaks down;
If described current called MS C breaks down, the PRN message of carrying paging instruction is routed to target MSC by described HSS or HLR, initiate paging request for described target MSC according to the paging instruction in described PRN message, make the MME accompanying by described terminal called control described terminal called execution CSFB according to described paging request and continue to complete callee function.
8. restoration methods according to claim 7, is characterized in that, described when terminal called has callee function, before HSS or HLR judges the step whether current called MS C breaks down, described restoration methods also comprises:
After described terminal called is attached to described current called MS C, described HSS or HLR preserves address or the title of described current called MS C, and preserves address or the title of described target MSC simultaneously.
9. the restoration methods according to claim 7 or 8, is characterized in that, described HSS or HLR judges that the step whether current called MS C breaks down comprises:
Described HSS or HLR sends described PRN message to described current called MS C;
Described HSS or HLR judges the response message whether receiving the described PRN message that described current called MS C sends in the given time;
If do not receive described response message within the described scheduled time, described HSS or HLR judges that described current called MS C breaks down.
10. the restoration methods according to claim 7 or 8, is characterized in that, described HSS or HLR judges that the step whether current called MS C breaks down comprises:
Described HSS or HLR receives described current called MS C at current time and reports heartbeat acknowledgment messages;
Described HSS or HLR judges whether again receive described heartbeat acknowledgment messages in the given time;
If again do not receive described heartbeat acknowledgment messages within the described scheduled time, described HSS or HLR judges that described current called MS C breaks down.
11. restoration methods according to claim 7, is characterized in that, described target MSC and described current called MS C are arranged in same MSC pond.
The restoration methods of 12. 1 kinds of callee functions, is characterized in that, described restoration methods comprises:
The paging request that MME receiving target MSC accompanying by terminal called initiates according to the paging instruction in PRN message, wherein, described target MSC, when current called MS C breaks down, receives the described PRN message of carrying described paging instruction from HSS or HLR;
Described MME controls described terminal called execution CSFB according to described paging request and continues to complete callee function.
13. restoration methods according to claim 12, is characterized in that, described MME controls described terminal called according to described paging request and performs CSFB and comprise with the step completing callee function and continue:
Described MME judges that whether comprising CS in described paging request recovers instruction;
If comprise described CS to recover instruction, described MME controls described terminal called execution CSFB according to described paging request and continues to complete callee function.
14. restoration methods according to claim 13, is characterized in that, described restoration methods also comprises:
If do not comprise described CS to recover instruction, the described paging request of described MME refusal process.
The communication equipment of 15. 1 kinds of callee functions, is characterized in that, described communication equipment comprises receiver module and paging module, wherein,
Described receiver module is used for when current called MS C breaks down, and receives the PRN message of carrying paging instruction that HSS or HLR sends, and described PRN message is sent to described paging module;
Described paging module is used for receiving described PRN message from described receiver module, and initiate paging request according to the paging instruction in described PRN message, control described terminal called execution CSFB to make the MME accompanying by terminal called according to described paging request and continue to complete callee function.
16. communication equipments according to claim 15, is characterized in that, described paging module also recovers instruction for carrying CS in described paging request, recover instruction judge whether to process described paging request to make described MME according to described CS.
17. communication equipments according to claim 15 or 16, it is characterized in that, described paging is designated as address or the title of described MME, and described paging module is specifically for initiating paging request according to the described address in described PRN message or title to the MME corresponding with described address or name.
18. communication equipments according to claim 15 or 16, it is characterized in that, described paging instruction is used for showing that described terminal called is attached to described MME, described paging module is specifically for initiating paging request according to the paging instruction in described PRN message at least one MME corresponding with described target MSC, and at least one MME described comprises the described MME accompanying by described terminal called.
19. communication equipments according to claim 15, is characterized in that, described paging request is IMSI paging request or TMSI paging request.
The communication equipment of 20. 1 kinds of callee functions, is characterized in that, described communication equipment comprises judge module and sending module, wherein,
Described judge module is used for when terminal called has callee function, judges whether current called MS C breaks down;
When described sending module breaks down for determining described current called MS C at described judge module, the PRN message of carrying paging instruction is routed to target MSC, initiate paging request for described target MSC according to the paging instruction in described PRN message, make the MME accompanying by described terminal called control described terminal called execution CSFB according to described paging request and continue to complete callee function.
21. communication equipments according to claim 20, is characterized in that, described communication equipment also comprises preservation module, wherein,
Described preservation module is used for after described terminal called is attached to described current called MS C, preserves address or the title of described current called MS C, and preserves address or the title of described target MSC simultaneously.
22. communication equipments according to claim 20 or 21, it is characterized in that, described communication equipment also comprises receiver module, wherein,
Described sending module is used for sending described PRN message to described current called MS C;
Described receiver module is used for after described sending module sends described PRN message, the response message of the described PRN message that current called MS C sends described in wait-receiving mode;
Described judge module specifically for judging whether described receiver module receives described response message in the given time, when determine within the described scheduled time, not receive described response message time, judge that described current called MS C breaks down.
23. communication equipments according to claim 20 or 21, it is characterized in that, described communication equipment also comprises receiver module, wherein,
The heartbeat acknowledgment messages that described receiver module reports for receiving described current called MS C;
Described judge module specifically at described receiver module after current time receives described heartbeat acknowledgment messages, judge whether described receiver module receives described heartbeat acknowledgment messages again in the given time, when determine within the described scheduled time, again not receive described heartbeat acknowledgment messages time, judge that described current called MS C breaks down.
24. communication equipments according to claim 20, is characterized in that, described target MSC and described current called MS C are arranged in same MSC pond.
The communication equipment of 25. 1 kinds of callee functions, is characterized in that, terminal called is attached to described communication equipment, and described communication equipment comprises receiver module and paging module, wherein,
Described receiver module is used for the paging request that receiving target MSC initiates according to the paging instruction in PRN message, and described paging request is sent to described paging module, wherein, described target MSC, when current called MS C breaks down, receives the described PRN message of carrying described paging instruction from HSS or HLR;
Described paging module be used for receive described paging request from described receiver module, and according to described paging request control described terminal called perform CSFB continue to complete callee function.
26. communication equipments according to claim 25, is characterized in that, described paging module comprises judging unit and paging unit, wherein,
Described judging unit is used for receiving described paging request from described receiver module, and judges that whether comprising CS in described paging request recovers instruction;
When described paging unit comprising described CS recovery instruction for determining at described judging unit, controlling described terminal called execution CSFB according to described paging request and continuing to complete callee function.
27. communication equipments according to claim 26, is characterized in that, described paging unit also for determine at described judging unit do not comprise described CS recover instruction time, refusal process described paging request.
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| CN113630757A (en) * | 2021-08-24 | 2021-11-09 | 中国联合网络通信集团有限公司 | Paging method, MSC and communication system |
| CN113630757B (en) * | 2021-08-24 | 2022-08-02 | 中国联合网络通信集团有限公司 | Paging method, MSC and communication system |
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Application publication date: 20150429 |