CN101754307B - Mobile for carrying out the inter-office switching between mobile switching center and mobile communication network - Google Patents
Mobile for carrying out the inter-office switching between mobile switching center and mobile communication network Download PDFInfo
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- CN101754307B CN101754307B CN200910189151.5A CN200910189151A CN101754307B CN 101754307 B CN101754307 B CN 101754307B CN 200910189151 A CN200910189151 A CN 200910189151A CN 101754307 B CN101754307 B CN 101754307B
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Abstract
The invention relates to a mobile switching center comprising a forwarding module, a flag bit setting module and a judging module, wherein the forwarding module is used for forwarding a message received by the mobile switching center to a mobile switching center on an outgoing side; the flag bit setting module is used for setting flag bits in a data area for marking the received message; and the judging module is used for establishing the inter-office bearing between the mobile switching center and the mobile switching center on the outgoing side, and judging whether the mobile switching center receives a message by checking the flag bit after entering the state of access waiting of a mobile phone. The invention further provides a method for carrying out the inter-office switching in the mobile communication network. The method for carrying out the the inter-office switching between the mobile switching center and the mobile communication network can increase the success rate of relocation when a gateway mobile switching center exists between the mobile switching center on the outgoing side and the mobile switching center on the ingoing side.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the method for carrying out inter-office switchover in moving communicating field.
Background technology
In a wcdma network, occur across mobile switching centre (MobileServices Switching Centre in mobile subscriber's calling procedure, MSC) when between, lane place is moved, because of wireless network signal mass change, Radio Network System (Radio Network System, RNS) can trigger interoffice reorientation to maintain the good speech quality of active user.
Arrange according to existing protocol, when user initiates reorientation, the out side MSC of reorientation is by MAP (Mobile Application Part, MAP) message sends re-positioning request to reorientation Incoming side MSC, the carrying that can be initiated to wireless side after reorientation Incoming side MSC receives Incoming re-positioning request is set up and application reorientation number, after the radio bearer of local exchange and reorientation number are all ready to, the relocation response message of carrying reorientation number is replied to the out side MSC of reorientation, the out side MSC of reorientation utilizes reorientation number, send initial address message (IAM) to reorientation Incoming side MSC, set up interoffice carrying, until cellphone subscriber accesses from reorientation Incoming side MSC.
But, due to the complexity of modern communication networks, usually between the out side MSC and reorientation Incoming side MSC of reorientation, gateway MSC (Gateway Mobile ServicesSwitching Centre can also be there is, GMSC), if GMSC have employed early send out Address Complete Message (AddressComplete Message, ACM) mechanism is (after namely GMSC receives IAM message, do not returning ACM message to reorientation Incoming side MSC forwarding directly to the out side MSC of reorientation), IAM message then can be caused to be later than wireless reorientation access message and to arrive reorientation Incoming side MSC, now will produce Incoming reorientation failure.Above-mentioned detailed process, refers to Fig. 1.Figure 1 shows that the flow chart of interoffice reorientation failure.
S101, out side Radio Network System (Radio Network System, RNS) of reorientation initiates re-positioning request to the out side MSC of reorientation.
S102, the out side MSC of reorientation sends re-positioning request to reorientation Incoming side MSC.
S103, reorientation Incoming side MSC send re-positioning request to reorientation Incoming side RNS, to set up interoffice carrying and to apply for reorientation number to Visited Location Registor (Visiting Location Register, VLR).
S104, reorientation Incoming side RNS send re-positioning request response to reorientation Incoming side MSC, represent that interoffice carrying foundation completes, and distribute the success of reorientation number.
S105, reorientation Incoming side MSC reply re-positioning request response to the out side MSC of reorientation, and this request response carries the reorientation number just distributed, and then reorientation Incoming side MSC enters and waits for interoffice connection status.
S106, the out side MSC of reorientation, according to the reorientation number received, sends IAM by GMSC to reorientation Incoming side MSC.
S107, GMSC adopt and early send out Address Complete Message (Address Complete Message, ACM), treatment mechanism, reply ACM first to the out side MSC of reorientation.
S108, the out side MSC of reorientation send reorientation to the out side RNS of reorientation and perform, and then need to access from reorientation Incoming side RNS from the out side MSC of reorientation is switched to the cellphone subscriber of reorientation Incoming side MSC.
Step S109, S110 reorientation Incoming side MSC receives relocation detect-message that reorientation Incoming side RNS sends and reorientation completes message, because now state machine is in and waits for that interoffice connects, does not process relocation detect-message and reorientation completes message.
Step S111, GMSC forward IAM to reorientation Incoming side MSC, and reorientation Incoming side MSC completes and sets up interoffice carrying.
Step S112, reorientation Incoming side MSC reply ACM, and enter wait mobile phone access state.
After step S113, GMSC receive ACM, because sent ACM to the out side MSC of reorientation, notified that the MSC interoffice carrying of reorientation out side was successfully established with call progress message (Call Progress Message, CPG).
Step S114, reorientation Incoming side MSC still continue to wait for that reorientation completes message under wait mobile phone access state, finally time-out, and reorientation Incoming side MSC sends the MSC reorientation failure of reorientation failed message notice reorientation out side.
In above-mentioned reorientation failure procedures, have received when reorientation Incoming side MSC is still in and waits for interoffice connection status and reset detect-message or reorientation completes message, and above-mentioned message is not processed, only enter under waiting for mobile phone access state and just can process, therefore cause reorientation failure.
Summary of the invention
The object of the present invention is to provide a kind of method of carrying out inter-office switchover in mobile switching centre and mobile communications network, improve the reorientation success rate between the out side MSC and reorientation Incoming side MSC of reorientation, more effectively to utilize the radio bearer resources of mobile communications network.
The invention provides a kind of mobile switching centre, comprise forwarding module, for enter in mobile switching centre wait for interoffice connection status under receive message after, message is transmitted to out side mobile switching centre; Marker bit arranges module, receives message for arranging marker bit mark within a data area; Judge module, carries for setting up interoffice in mobile switching centre and out side mobile switching centre, and after entering wait mobile phone access state, judges whether mobile switching centre receives message by check mark position.
Preferably, above-mentioned mobile switching centre also comprises response message sending module, for when mobile switching centre receives message, sends response message to out side mobile switching centre.
Preferably, above-mentioned message is that relocation detect-message or reorientation complete message.
Preferably, above-mentioned judge module is also for judging whether described message is that relocation detect-message or reorientation complete message.
Preferably, above-mentioned marker bit arranges module also for when described message is relocation detect-message, arranges marker bit mark within a data area and has received described relocation detect-message; And for described message for reset survey message time, arrange within a data area marker bit mark received described in reset message.
The present invention also provides a kind of method of carrying out inter-office switchover in mobile communications network, comprising: Incoming side mobile switching centre enters and waits for interoffice connection status; Message, under wait interoffice connection status, after receiving message, is transmitted to out side mobile switching centre by Incoming side mobile switching centre, and arranges marker bit mark within a data area and receive message; Incoming side mobile switching centre and out side mobile switching centre set up interoffice and carry, and enter wait mobile phone access state; Incoming side mobile switching centre checks the marker bit of data field under mobile phone access state waiting for, to judge whether Incoming side mobile switching centre receives message, if received, then send response message to out side mobile switching centre, and enter calling stable state.
Preferably, if above-mentioned Incoming side mobile switching centre is under wait interoffice connection status, the message received is relocation detect-message, then relocation detect-message is forwarded to out side mobile switching centre by MAP message by Incoming side mobile switching centre, and arrange within a data area marker bit mark receive relocation detect-message.
Preferably, the method of carrying out inter-office switchover in above-mentioned mobile communications network also comprises Incoming side and moves switching center after out side mobile switching centre transmission response message, and Incoming side mobile switching centre waits for that reorientation completes the step of message under wait mobile phone access state.
Preferably, if above-mentioned Incoming side mobile switching centre is under wait interoffice connection status, the message received is that reorientation completes message, then reorientation is completed message by MAP message and is forwarded to Incoming side mobile switching centre by out side mobile switching centre, and arranges marker bit mark within a data area and received reorientation and complete message.
Preferably, if above-mentioned Incoming side mobile switching centre is under wait interoffice connection status, the message received comprises relocation detect-message and reorientation completes message, then reorientation is completed message by MAP message and is forwarded to Incoming side mobile switching centre by out side mobile switching centre, and arranges marker bit mark within a data area and received reorientation and complete message.
The method of carrying out inter-office switchover in the mobile switching centre that the embodiment of the present invention provides and mobile communications network can overcome in existing standard agreement when carrying out inter-office switchover, when mobile switching centre's untreated message received under wait interoffice connection status of Incoming side, and the problem of the inter-office switchover failure caused, reorientation success rate during GMSC is there is, more effectively to utilize the radio bearer resources of mobile communications network between the out side MSC and reorientation Incoming side MSC of raising reorientation.
Accompanying drawing explanation
Figure 1 shows that the flow chart of interoffice reorientation failure.
Figure 2 shows that the structural representation of a kind of embodiment of mobile switching centre of the present invention.
Figure 3 shows that the flow chart of a kind of embodiment of the method for carrying out inter-office switchover in mobile communications network of the present invention.
Figure 4 shows that the flow chart of the another kind of embodiment of the method for carrying out inter-office switchover in mobile communications network of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail, can better understand the present invention to make those skilled in the art and can be implemented, but illustrated embodiment is not as a limitation of the invention.
Figure 2 shows that the structural representation of a kind of embodiment of mobile switching centre of the present invention.
The mobile switching centre (MSC) 10 that the present embodiment provides can be applicable in the mobile communications networks such as WCDMA or GSM, simultaneously MSC10 can be in wait for interoffice connection status under increase and message is completed to the relocation detect-message received or reorientation carry out forward process, make out side MSC initial address message (IAM) after the full message of return address (ACM) between successful office of acceptance, concurrently relocation detect-message is passed through or reorientation completes message if judge to receive, then send response message (ANM) to out side MSC, last call migration is to stable state.The MSC10 concrete structure that the present embodiment provides is as follows:
MSC10 comprises forwarding module 101, marker bit arranges module 102, judge module 103 and response message sending module 104.
Forwarding module 101 for enter at MSC10 wait for interoffice connection status under receive message after, this message is transmitted to out side MSC.This message is that relocation detect-message or reorientation complete message.
Marker bit arranges module 102 and receives message for arranging marker bit mark within a data area.When this message is relocation detect-message, marker bit arrange module 102 arrange within a data area marker bit mark receive relocation detect-message; When this message surveys message for having reset, marker bit arranges module 102 and arranges marker bit mark within a data area and received and reset message.
Judge module 103 carries for setting up interoffice at MSC10 and out side MSC, and after entering wait mobile phone access state, judges whether MSC10 receives this message by check mark position.In other embodiments, judge module 103 is also for judging whether described message is that relocation detect-message or reorientation complete message.
Preferably, in another embodiment, MSC10 except comprising forwarding module 101, marker bit arranges except module 102 and judge module 103, also comprises response message sending module 104 and state setting module 105.Response message sending module 104 is for receiving this message during at MSC10, send response message to out side MSC.State setting module 105 entering wait interoffice connection status for arranging MSC, waiting for mobile phone access state or calling stable state.
The MSC10 that the embodiment of the present invention provides can overcome in existing standard agreement when carrying out inter-office switchover, when mobile switching centre (MSC) untreated message received under wait interoffice connection status of Incoming side, and the problem of the inter-office switchover failure caused, reorientation success rate time gateway MSC (GMSC) is there is, more effectively to utilize the radio bearer resources of mobile communications network between the out side MSC and reorientation Incoming side MSC of raising reorientation.
Figure 3 shows that the flow chart of a kind of embodiment of the method for carrying out inter-office switchover in mobile communications network of the present invention.
The method of carrying out inter-office switchover in the mobile communications network that the present embodiment provides can be applicable in the mobile communications networks such as WCDMA or GSM, Incoming side MSC can be in wait for interoffice connection status under increase and message is completed to the relocation detect-message received or reorientation carry out forward process, make out side MSC initial address message (IAM) after the full message of return address (ACM) between successful office of acceptance, concurrently relocation detect-message is passed through or reorientation completes message if judge to receive, then send response message (ANM) to out side MSC, last call migration is to stable state, specific as follows:
Step S301, Incoming side MSC enter and wait for interoffice connection status.
Message, under wait interoffice connection status, after receiving message, is transmitted to out side MSC by step S302, Incoming side MSC, and arranges marker bit mark within a data area and received described message.
Step S303, Incoming side MSC and out side MSC set up interoffice and carry, and enter wait mobile phone access state.
Step S304, Incoming side MSC check the marker bit of described data field under mobile phone access state waiting for, to judge whether Incoming side MSC receives described message, if received, then send response message to out side MSC, and enter calling stable state.If Incoming side MSC checks that discovery does not receive reorientation detection and reorientation completes message, then continue to wait for, until complete inter-office switchover or reorientation.If Incoming side MSC wait timeout, then reply reorientation failure to out side MSC, cancel reorientation, the channel resource that release Incoming side MSC takies.
In the present embodiment, if Incoming side MSC is under wait interoffice connection status, the message received is relocation detect-message, then relocation detect-message is forwarded to out side MSC by MAP message by Incoming side MSC, and arrange within a data area marker bit mark receive relocation detect-message; Then Incoming side MSC sends response message to out side MSC, and enters and wait for that mobile phone access state waits for that reorientation completes message.
If Incoming side MSC is under wait interoffice connection status, the message received is that reorientation completes message, then reorientation is completed message by MAP message and is forwarded to Incoming side MSC by out side MSC, and arranges marker bit mark within a data area and received reorientation and complete message.
If Incoming side MSC is under wait interoffice connection status, the message received comprises relocation detect-message and reorientation completes message, in other words, Incoming side MSC had not only received relocation detect-message but also had received reorientation and completed message, then reorientation is completed message by MAP message and is forwarded to Incoming side MSC by out side MSC, and arranges marker bit mark within a data area and received reorientation and complete message.
The method of carrying out inter-office switchover in the mobile communications network that the embodiment of the present invention provides can overcome in existing standard agreement when carrying out inter-office switchover, when MSC untreated message received under wait interoffice connection status of Incoming side, and the problem of the inter-office switchover failure caused, reorientation success rate during GMSC is there is, more effectively to utilize the radio bearer resources of mobile communications network between the out side MSC and reorientation Incoming side MSC of raising reorientation.
Figure 4 shows that the flow chart of the another kind of embodiment of the method for carrying out inter-office switchover in mobile communications network of the present invention.
In the present embodiment, will illustrate that for WCDMA mobile communication system the present invention carries out the process of inter-office switchover in WCDMA mobile communications network.What should work as explanation is, the method of the inter-office switchover in the present embodiment is equally also applicable to gsm mobile communication system when carrying out Incoming and switching, the switching detection message that Incoming side MSC receives and the situation that the time that toggle bit completes message leads to the failure early than IAM message.
Step S401, out side Radio Network System (Radio Network System, RNS) of reorientation initiates re-positioning request to the out side MSC of reorientation.
Step S402, the out side MSC of reorientation sends re-positioning request to reorientation Incoming side MSC.
Step S403, reorientation Incoming side MSC send re-positioning request to reorientation Incoming side RNS, to set up interoffice carrying and to apply for reorientation number to Visited Location Registor (Visiting Location Register, VLR).
Step S404, reorientation Incoming side RNS send re-positioning request response to reorientation Incoming side MSC, represent that interoffice carrying foundation completes, and distribute the success of reorientation number.
Step S405, reorientation Incoming side MSC reply re-positioning request response to the out side MSC of reorientation, and this request response carries the reorientation number just distributed, and then reorientation Incoming side MSC enters and waits for interoffice connection status.
Step S406, the out side MSC of reorientation, according to the reorientation number received, sends IAM by GMSC to reorientation Incoming side MSC.
Step S407, GMSC adopt and early send out Address Complete Message (Address Complete Message, ACM), treatment mechanism, reply ACM first to the out side MSC of reorientation.
Step S408, the out side MSC of reorientation send reorientation to the out side RNS of reorientation and perform, and then need to access from reorientation Incoming side RNS from the out side MSC of reorientation is switched to the cellphone subscriber of reorientation Incoming side MSC.
Step S409, is in and waits for that the reorientation Incoming side MSC of interoffice connection status receives the relocation detect-message of reorientation Incoming side RNS transmission.
Step S410, reorientation Incoming side MSC is by MAP (Mobile Application Part, MAP) relocation detect-message is forwarded to out side MSC by message, and arrange within a data area marker bit mark receive relocation detect-message.
Step S411, is in and waits for that the reorientation Incoming side MSC of interoffice connection status receives the reorientation that reorientation Incoming side RNS sends and completes message.
Reorientation is completed message by MAP message and is forwarded to out side MSC by step S412, reorientation Incoming side MSC, and arranges marker bit mark within a data area and received reorientation and complete message.
Step S413, reorientation Incoming side MSC receive the IAM that GMSC forwards, and start to set up interoffice carrying.
Step S414, reorientation Incoming side MSC complete and set up interoffice carrying, reply ACM to GMSC.
Send call progress message (Call Progress Message, CPG) to the out side MSC of reorientation after step S415, GMSC receive ACM, the out side MSC of reorientation enters and waits for mobile phone access state.
Step S416, reorientation Incoming side MSC enters the lower marker bit according to arranging in data field at wait mobile phone access state and checks whether that receiving reorientation completes message, just response message (Answer Message was sent to GMSC if received, ANM), reorientation Incoming side MSC enters calling stable state.
Step S417, GMSC forward ANM to the out side MSC of reorientation, complete inter-office switchover.
The method of carrying out inter-office switchover in the mobile communications network that the embodiment of the present invention provides can overcome in existing standard agreement when carrying out inter-office switchover, when MSC untreated message received under wait interoffice connection status of Incoming side, and the problem of the inter-office switchover failure caused, reorientation success rate during GMSC is there is, more effectively to utilize the radio bearer resources of mobile communications network between the out side MSC and reorientation Incoming side MSC of raising reorientation.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention 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 scope of patent protection of the present invention.
Claims (8)
1. a mobile switching centre, is characterized in that, comprising:
Forwarding module, for enter in described mobile switching centre wait for interoffice connection status under receive reorientation message after, corresponding reorientation message is transmitted to out side mobile switching centre;
Marker bit arranges module, has received described corresponding reorientation message for arranging marker bit mark within a data area;
Judge module, carries for setting up interoffice in described mobile switching centre and out side mobile switching centre, and after entering wait mobile phone access state, by checking that described marker bit judges whether described mobile switching centre receives described corresponding reorientation message;
Described reorientation message is that relocation detect-message or reorientation complete message;
Response message sending module, for when described mobile switching centre receives described corresponding reorientation message, sends response message to out side mobile switching centre.
2. mobile switching centre as claimed in claim 1, it is characterized in that, described judge module is also for judging whether described corresponding reorientation message is that relocation detect-message or reorientation complete message.
3. mobile switching centre as claimed in claim 1, it is characterized in that, described marker bit arranges module also for when described corresponding reorientation message is relocation detect-message, arranges marker bit mark within a data area and has received described relocation detect-message; And in described corresponding reorientation message be reorientation complete message time, marker bit mark is set within a data area and has received described reorientation and complete message.
4. carry out a method for inter-office switchover in mobile communications network, it is characterized in that, comprising:
Incoming side mobile switching centre enters and waits for interoffice connection status;
Corresponding reorientation message, under wait interoffice connection status, after receiving reorientation message, is transmitted to out side mobile switching centre by Incoming side mobile switching centre, and arranges marker bit mark within a data area and received described corresponding reorientation message;
Incoming side mobile switching centre and out side mobile switching centre set up interoffice and carry, and enter wait mobile phone access state;
Incoming side mobile switching centre checks the marker bit of described data field under mobile phone access state waiting for, to judge whether described Incoming side mobile switching centre receives described corresponding reorientation message, if received, then send response message to out side mobile switching centre, and enter calling stable state;
Described reorientation message is that relocation detect-message and/or reorientation complete message.
5. in mobile communications network as claimed in claim 4, carry out the method for inter-office switchover, it is characterized in that, if Incoming side mobile switching centre is under wait interoffice connection status, the described reorientation message received is relocation detect-message, then described relocation detect-message is forwarded to out side mobile switching centre by MAP message by described Incoming side mobile switching centre, and arrange within a data area marker bit mark receive relocation detect-message.
6. in mobile communications network as claimed in claim 5, carry out the method for inter-office switchover, it is characterized in that, also comprise described Incoming side mobile switching centre after described out side mobile switching centre transmission response message, described Incoming side mobile switching centre waits for that reorientation completes the step of message under wait mobile phone access state.
7. in mobile communications network as claimed in claim 4, carry out the method for inter-office switchover, it is characterized in that, if Incoming side mobile switching centre is under wait interoffice connection status, the described reorientation message received is that reorientation completes message, then described reorientation is completed message by MAP message and is forwarded to out side mobile switching centre by described Incoming side mobile switching centre, and arranges marker bit mark within a data area and received reorientation and complete message.
8. in mobile communications network as claimed in claim 4, carry out the method for inter-office switchover, it is characterized in that, if Incoming side mobile switching centre is under wait interoffice connection status, the described reorientation message received comprises relocation detect-message and reorientation completes message, then described reorientation is completed message by MAP message and is forwarded to out side mobile switching centre by described Incoming side mobile switching centre, and arranges marker bit mark within a data area and received reorientation and complete message.
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| CN1224564A (en) * | 1996-03-26 | 1999-07-28 | 艾利森公司 | Routing incoming call to ported mobile station within telecommunications network |
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