CN110191509A - Call establishment method and moving exchanging center MSC - Google Patents
Call establishment method and moving exchanging center MSC Download PDFInfo
- Publication number
- CN110191509A CN110191509A CN201910596411.4A CN201910596411A CN110191509A CN 110191509 A CN110191509 A CN 110191509A CN 201910596411 A CN201910596411 A CN 201910596411A CN 110191509 A CN110191509 A CN 110191509A
- Authority
- CN
- China
- Prior art keywords
- call
- center msc
- called terminal
- exchanging center
- moving exchanging
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/14—Backbone network devices
Abstract
The present invention provides a kind of call establishment method and moving exchanging center MSC, belongs to field of communication technology, can at least partly solve the problem of to be easy to miss phone when called terminal handover network under existing communication mode.If call establishment method of the invention includes: that moving exchanging center MSC does not receive the page response from mobile management entity MME in the first setting time, the information in call establishment then is sent to Call-Establish-Success rate equipment, and stores paging message；Moving exchanging center MSC judges sending in the second setting time after the information in call establishment whether receive the LAU message from called terminal；If moving exchanging center MSC receives the LAU message from called terminal in the second setting time, corresponding paging message is sent to called terminal.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to a kind of call establishment method and a kind of mobile switching centre
MSC。
Background technique
The establishment process of traditional 4G call is as follows: moving exchanging center MSC sends paging to mobile management entity MME and asks
It asks, mobile management entity MME sends paging request to called terminal according to the paging request.If the user of called terminal answers
The phone, then called terminal can send page response to mobile management entity MME, and then mobile management entity MME is to movement
Switching centre MSC sends page response, and moving exchanging center MSC sends back to response message to calling terminal again, informs calling terminal
Called terminal has received calls.The 4G network signal locating for the called terminal is bad, carrying out from 4G network to 3G network or
To 2G network switching when, mobile management entity MME do not receive within the set time response message judge this calling lose
It loses, and then moving exchanging center MSC is notified that calling terminal call access failure.This will cause called terminal and misses phone, and real
Called terminal completes that the calling originally can be answered from 4G network to 3G or after the switching of 2G network on border.
Summary of the invention
The present invention at least partly solves existing call-establishing method and arrives low level network in called terminal progress 4G network
The problem of failure, is established in call when switching, provides a kind of call establishment method and a kind of moving exchanging center MSC.
Solving technical solution used by present invention problem is a kind of call establishment method, comprising:
Moving exchanging center MSC receives call request from Call-Establish-Success rate equipment；
Moving exchanging center MSC sends paging request to corresponding mobile management entity MME according to the call request, with
Paging request is sent to called terminal for mobile management entity MME；
Moving exchanging center MSC judge its send whether received in the first setting time after paging request from move
The page response of dynamic management entity MME；
If moving exchanging center MSC does not receive in first setting time from mobile management entity MME
Page response then sends the information in call establishment to Call-Establish-Success rate equipment, and stores paging message；
Moving exchanging center MSC judges
The no LAU message received from called terminal；
If moving exchanging center MSC receives the LAU message from called terminal in second setting time,
Corresponding paging message is sent to called terminal.
Optionally, further includes: if moving exchanging center MSC is not received in second setting time from called
The LAU message of terminal then discharges the paging message of its storage, and the information of call failure is sent to Call-Establish-Success rate equipment.
Optionally, further includes: if moving exchanging center MSC receives in first setting time from moving tube
The page response of entity MME is managed, then sends the successful information of call setup to Call-Establish-Success rate equipment, and pass through mobile management
Entity MME establishes call connection.
Solving technical solution used by present invention problem is a kind of moving exchanging center MSC, comprising:
Receiving module, for receiving call request from Call-Establish-Success rate equipment；
Module is paged, for sending paging request to corresponding mobile management entity MME according to the call request, for
Mobile management entity MME sends paging request to called terminal；
Whether first judgment module receives for judging to page in the first setting time after module sends paging request
Page response from mobile management entity MME；
Notification module, for judging to page module in first setting time and do not receive in first judgment module
In the case where the page response of mobile management entity MME, the letter in call establishment is sent to Call-Establish-Success rate equipment
Breath, and store paging message；
Second judgment module, for judging the second setting time after notification module sends the information in call establishment
Inside whether receive the LAU message from called terminal；
Call establishment module, for judging to be received in second setting time from called in the second judgment module
In the case where the LAU message of terminal, corresponding paging message is sent to called terminal.
Optionally, call establishment module is also used to judge not receive in second setting time in the second judgment module
In the case where the LAU message from called terminal, sends and instructed so that notification module discharges seeking for its storage to notification module
Message is exhaled, and sends the information of call failure to Call-Establish-Success rate equipment.
Optionally, notification module is also used to judge in first judgment module to page module in first setting time
In the case where receiving the page response from mobile management entity MME, to Call-Establish-Success rate equipment send call setup at
The information of function, and call connection is established by mobile management entity MME.
Solving technical solution used by present invention problem is a kind of moving exchanging center MSC, including memory and
Processor, the memory store instruction, the processor is for running described instruction to execute above-mentioned method.
According to this method, when called terminal is carrying out switching of the 4G network to low level network, moving exchanging center MSC
It can't inform that calling terminal call setup fails, but inform that calling terminal call is being established, called terminal is waited to complete
Call connection is resettled after 4G network to the switching of low level network.To improve the success rate that call is established.
Detailed description of the invention
Fig. 1 is a kind of flow chart of call establishment method of the embodiment of the present invention；
Fig. 2 is a kind of flow chart of call establishment method detailed step of the embodiment of the present invention；
Fig. 3 is a kind of block diagram of moving exchanging center MSC of the embodiment of the present invention；
Fig. 4 is the block diagram of another moving exchanging center MSC of the embodiment of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
Embodiment 1:
Referring to Fig. 1 and Fig. 2 is combined, the present embodiment provides a kind of call establishment methods, include the following steps.Wherein Fig. 2
Show the corresponding detailed operating process of the present embodiment part steps.
It should be noted that the called terminal in the present embodiment needs to complete the joint attachment of 4G multimode card.Detailed process
As follows: called terminal sends attach request information to mobile management entity MME.It needs to indicate type of attachment in the attach request information
For EPS/IMSI attachment.The attach request should also show that called terminal has circuit domain voice fallback (CS Fallback).It moves
Dynamic management entity MME sends SGsAP-LOCATIN-UPDATE-REQREST information and gives corresponding VLR Visitor Location Register (VLR),
It can include new LAI, international mobile subscriber identity (IMSI), the title of mobile management entity MME, location updating in the information
The parameters such as type.VLR Visitor Location Register stores the relevant information of mobile management entity MME, and creates the mobile management entity
The SGs association of the 4G multimode card of the called terminal under MME.User information and position of the VLR Visitor Location Register according to called terminal
Information initiates the position update flow to home location register (HLR).VLR Visitor Location Register is returned to mobile management entity MME
Return confirmation message.Mobile management entity MME is played to called terminal adheres to successful information.
Step S1, moving exchanging center MSC receives call request from Call-Establish-Success rate equipment.
After calling terminal initiates calling, the Call-Establish-Success rate equipment that calling terminal is belonged to can be according to called terminal
Telephone number issues inquiry request to home location register (HLR).Home location register is returned to call session controller
The moving exchanging center MSC that called terminal is belonged to.Call-Establish-Success rate equipment is exhaled to the sending of corresponding moving exchanging center MSC
Cry request.
Step S2, moving exchanging center MSC sends to corresponding mobile management entity MME according to the call request and pages
Request, so that mobile management entity MME sends paging request to called terminal.
Specifically, paging can be issued to corresponding called terminal after mobile management entity MME receives paging request to ask
It asks.
Step S3, moving exchanging center MSC judges whether it receives sending in the first setting time after paging request
To the page response from mobile management entity MME.
In most cases, the 4G network state of called terminal is good, and called terminal can be to corresponding mobile management entity MME
It sends back to and firmly believes information, mobile management entity MME also can send back to page response to moving exchanging center MSC in time.So move
Switching centre MSC can receive the page response from mobile management entity MME in first setting time, then execute
Step S8, the successful information of call setup is sent to Call-Establish-Success rate equipment, and is established and is conversed by mobile management entity MME
Connection.
Certainly, if called terminal is just at 4G network to the switching state of 3G or 2G network, in mobile switch
Heart MSC can not receive the page response from mobile management entity MME in first setting time, then follow the steps
S4, the information in call establishment is sent to Call-Establish-Success rate equipment, and stores paging message.In this case, caller
Terminal can be received from Call-Establish-Success rate equipment pages information in progress, and the user of calling terminal will continue to wait and exhale
It cries and is switched on.
Judge that second after the information in the transmission call establishment sets in step S5, moving exchanging center MSC
The LAU message from called terminal whether is received in fixing time.
After called terminal completes the switching from 4G network to low level network, called terminal can be to moving exchanging center MSC
Send LAU message.
If moving exchanging center MSC receives the LAU message from called terminal in second setting time,
Corresponding paging message is sent to called terminal.
It should be noted that moving exchanging center MSC can receive the LAU message that multiple terminals issue it.Mobile switch
Center MSC needs to confirm that received LAU message is that aforementioned calling terminal needs that called terminal connected to be sent out
Out.The identification information of the identification information in LAU message and the called terminal of moving exchanging center MSC storage can specifically be compared
Mode is realized.
Optionally, if moving exchanging center MSC does not receive in second setting time from called terminal
LAU message then discharges the paging message of its storage, and the information of call failure is sent to Call-Establish-Success rate equipment.
Provided method according to this embodiment is in the state that 4G network switches to 3G network when there is called terminal
When, called terminal can't omit phone, and the call of calling terminal connects into power and is also improved.
Embodiment 2:
Referring to Fig. 3, the present embodiment provides a kind of moving exchanging center MSCs, the method to realize embodiment 1, each module
Detailed operation principle can refer to embodiment 1.The moving exchanging center MSC comprises the following modules: receiving module 11, is used for from calling
Session control equipment receives call request；Page module 12, for according to the call request to corresponding mobile management entity
MME sends paging request, so that mobile management entity MME sends paging request to called terminal；First judgment module 13, is used for
Judge page in the first setting time after module sends paging request whether receive the paging from mobile management entity MME
Response；Notification module 14, for judging to page module in first setting time and do not receive in first judgment module
In the case where the page response of mobile management entity MME, the letter in call establishment is sent to Call-Establish-Success rate equipment
Breath, and store paging message；Second judgment module 15, after judging that notification module sends the information in call establishment
Whether LAU message from called terminal is received in second setting time；Call establishment module 16, for judging mould second
In the case that block judges to receive the LAU message from called terminal in second setting time, corresponding paging is disappeared
Breath is sent to called terminal.
Optionally, call establishment module 16 is also used to judge in second setting time not in the second judgment module 15
In the case where receiving the LAU message from called terminal, sends and instructed so that notification module 14 discharges it to notification module 14
The paging message of storage, and to Call-Establish-Success rate equipment send call failure information.
Optionally, notification module 14 are also used to judge to page in first setting time in first judgment module 13
In the case that module 12 receives the page response from mobile management entity MME, sends and call to Call-Establish-Success rate equipment
The information being successfully established, and call connection is established by mobile management entity MME.
Provided moving exchanging center MSC according to this embodiment is in 4G network to 3G network when there is called terminal
When the state of switching, called terminal can't omit phone, and the call of calling terminal connects into power and is also improved.
Embodiment 3:
Referring to fig. 4, described to deposit the present embodiment provides a kind of moving exchanging center MSC, including memory 21 and processor 22
21 store instruction of reservoir, the method that the processor 22 is used to run described instruction to execute embodiment 1.
Specifically, memory 21 e.g. read-only memory (ROM), random access memory (RAM) etc. arbitrarily has data and deposits
The device of energy storage power.Processor 22 is, for example, central processing unit (CPU), microprocessor (MCU) etc..Certainly, memory 21 and place
Reason device 22 is also possible to be integrated in a device.
Provided moving exchanging center MSC according to this embodiment is in 4G network to 3G network when there is called terminal
When the state of switching, called terminal can't omit phone, and the call of calling terminal connects into power and is also improved.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a kind of call establishment method characterized by comprising
Moving exchanging center MSC receives call request from Call-Establish-Success rate equipment；
Moving exchanging center MSC sends paging request to corresponding mobile management entity MME according to the call request, for moving
Dynamic management entity MME sends paging request to called terminal；
Moving exchanging center MSC judges whether it receives from moving tube sending in the first setting time after paging request
Manage the page response of entity MME；
If moving exchanging center MSC does not receive the paging from mobile management entity MME in first setting time
Response then sends the information in call establishment to Call-Establish-Success rate equipment, and stores paging message；
Moving exchanging center MSC judges whether connect in the second setting time after the information in the transmission call establishment
Receive the LAU message from called terminal；
If moving exchanging center MSC receives the LAU message from called terminal in second setting time, will be right
The paging message answered is sent to called terminal.
2. the method according to claim 1, wherein further include: if moving exchanging center MSC is described second
The LAU message from called terminal is not received in setting time, then discharges the paging message of its storage, and to call session control
The information of control equipment transmission call failure.
3. the method according to claim 1, wherein further include: if moving exchanging center MSC is described first
The page response from mobile management entity MME is received in setting time, then sends call setup to Call-Establish-Success rate equipment
Successful information is found, and call connection is established by mobile management entity MME.
4. a kind of moving exchanging center MSC characterized by comprising
Receiving module, for receiving call request from Call-Establish-Success rate equipment；
Module is paged, for sending paging request to corresponding mobile management entity MME according to the call request, for movement
Management entity MME sends paging request to called terminal；
Whether first judgment module comes from for judging to page to receive in the first setting time after module sends paging request
The page response of mobile management entity MME；
Notification module, for judging that paging module in first setting time does not receive from shifting in first judgment module
In the case where the page response of dynamic management entity MME, the information in call establishment is sent to Call-Establish-Success rate equipment, and
Store paging message；
Second judgment module, for judge notification module send call establishment in information after the second setting time in be
The no LAU message received from called terminal；
Call establishment module, for judging to receive in second setting time from called terminal in the second judgment module
LAU message in the case where, corresponding paging message is sent to called terminal.
5. moving exchanging center MSC according to claim 4, which is characterized in that call establishment module is also used to second
In the case that judgment module judges not receiving the LAU message from called terminal in second setting time, Xiang Tongzhi
Module, which is sent, instructs the paging message so that notification module discharges its storage, and sends call failure to Call-Establish-Success rate equipment
Information.
6. moving exchanging center MSC according to claim 4, which is characterized in that notification module is also used in the first judgement
Module judges to page the case where module receives the page response from mobile management entity MME in first setting time
Under, the successful information of call setup is sent to Call-Establish-Success rate equipment, and call is established by mobile management entity MME and is connected
It connects.
7. a kind of moving exchanging center MSC, which is characterized in that including memory and processor, the memory store instruction, institute
It states processor and method described in 1-3 any one is required with perform claim for running described instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910596411.4A CN110191509A (en) | 2019-07-03 | 2019-07-03 | Call establishment method and moving exchanging center MSC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910596411.4A CN110191509A (en) | 2019-07-03 | 2019-07-03 | Call establishment method and moving exchanging center MSC |
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| CN110191509A true CN110191509A (en) | 2019-08-30 |
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| CN201910596411.4A Pending CN110191509A (en) | 2019-07-03 | 2019-07-03 | Call establishment method and moving exchanging center MSC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676890A (en) * | 2021-08-24 | 2021-11-19 | 中国联合网络通信集团有限公司 | Paging method and mobile switching center MSC |
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