CN101472310A - Method, device and system for implementing reorientation in communication system - Google Patents
Method, device and system for implementing reorientation in communication system Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for realizing redirection in a communication system. The method mainly comprises the following steps: firstly, a page message aiming at user terminal is sent to the first network and the second network respectively, and the page message gets to a second network before the user terminal is put in the second network; after the user terminal receives page message through the first network, and determines that the page message is required to be redirected to the second network, the user terminal is reconnected into the second network, and answers to the page message issued by the second network. Therefore, the realization of the embodiment of the invention ensures that the time for cell reselection process and paging response process are minimized, and then the time delay of the entire call establishment process is reduced, and the service continuity in a coexisting network is ensured.
Description
Technical field
The present invention relates to communication technical field, relate in particular to and realize redirected technical scheme in a kind of communication system.
Background technology
Along with SAE (System Architecture Evolution)/LTE (Long Term Evolution) development of internet technology, make SAE/LTE network and 2G/3G network to have occurred in communication system and the phenomenon of depositing.Wherein, described SAE/LTE network is as the packet switching system of PS (packet domain) carrying, and corresponding speech business is in the carrying transmission of PS territory; Described 2G/3G network then normally carries speech business of transmission in the CS territory.
Because the coexistence of SAE/LTE network and 2G/3G network, make the user in SAE/LTE network and 2G/3G network effective range, to move, therefore, in setting up calling procedure, may need to carry out corresponding redirection process, with normally carrying out of call business between the assurance calling and called.
At present, in called scene, the corresponding process of calling out re-orientation processes that realizes comprises:
(1) after the EPC (Packet Service core net) of calling terminal network in the SAE/LTE network sends the setup requests signaling, MME (mobile management entity) issuing page message that EPC will be registered to UE (subscriber equipment) is so that by eNB (enhancing base station) issuing page message;
(2) after UE receives beep-page message, send RRC (Radio Resource control) connection request message, and,, then notify the CS territory that is linked into the 2G/3G network again if need by the CS territory that eNB judges whether UE to be redirected to the 2G/3G network to eNB;
(2) the calling terminal network issues the CS beep-page message to the CS territory of 2G/3G network again, again after the UE that is linked into the CS territory of 2G/3G network receives beep-page message, carry out the operation of response paging, promptly carry out the CS call setup flow process in the 2G/3G network of standard, thereby in the 2G/3G network, commence business by the CS territory.
Can realize the redirect operation of UE by above-mentioned processing procedure, still, from above-mentioned handling process as can be seen, after UE is redirected to CS territory in the 2G/3G network, need issue the CS paging to the 2G/3G at UE place network again by the calling terminal network.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Because in above-mentioned re-orientation processes process, after UE need be linked into the 2G/3G network again, just can receive the beep-page message that MSC issues, and the CS territory of 2G/3G network does not have MM (mobile management) context of UE (to need to carry out corresponding location update operations, to obtain corresponding M M context), therefore, the time-delay of call setup increases greatly in the whole re-orientation processes process.
Summary of the invention
Embodiments of the invention provide realizes redirected method, Apparatus and system in a kind of communication system, thereby can reduce the time delay of call setup in the redirection process.
Realize redirected method in a kind of communication system, comprising:
Send beep-page message at user terminal to first network and second network respectively, and make user terminal before inserting second network, described beep-page message can arrive second network;
When user terminal responds beep-page message in first network, need be redirected in second network by the first network informing user terminal;
Described user terminal inserts and has received second network of described beep-page message, and responds beep-page message in second network.
A kind of method that sends beep-page message comprises:
Receive the call request that calling terminal is sent;
Send beep-page message at described user terminal to first network and second network respectively, and make described user terminal before inserting second network, described beep-page message can arrive second network.
A kind of device that sends beep-page message comprises:
The call information receiving element is used to receive the call request that calling terminal is sent;
The beep-page message transmitting element is used for simultaneously sending beep-page message at described user terminal to first network and second network, and makes described user terminal before inserting second network, and described beep-page message can arrive second network.
A kind of method of being redirected of realizing comprises:
User terminal is by the first network paging receiving message, and described beep-page message be the beep-page message that sends to first network and second network respectively, and at described user terminal before access second network, described beep-page message has arrived second network;
If described user terminal need be redirected in second network, then this user terminal inserts second network, and responds beep-page message in second network.
A kind of user terminal comprises:
The beep-page message receiving element, be used for by the first network paging receiving message, described beep-page message is the beep-page message that sends to first network and second network respectively, and before described user terminal was inserting second network, described beep-page message had arrived second network;
The redirect operation unit is used for after described beep-page message receiving element paging receiving message, if described user terminal need be redirected in second network, then inserts second network, and respond beep-page message in second network.
Realize redirected system in a kind of communication system, comprising:
The beep-page message dispensing device is used for sending beep-page message at user terminal to first network and second network, and makes described user terminal before inserting second network, and described beep-page message can arrive second network;
First network is used for the beep-page message that the beep-page message dispensing device is sent is sent to user terminal, and is used for indicating user terminal and is redirected to second network;
Second network is used for the beep-page message that paging receiving message dispensing device is sent, and reception is redirected to the response beep-page message that the user terminal in second network is sent.
The technical scheme that is provided by the embodiment of the invention described above as can be seen, the embodiment of the invention makes in redirection process, can reduce the time that cell reselection process and page response process consume as far as possible, and then reduce the time delay of whole call establishment, guaranteed the continuity of the business in the co-existin networks.
Description of drawings
The processing procedure schematic diagram that the realization that Fig. 1 provides for the embodiment of the invention is redirected;
The device that Fig. 2 provides for the embodiment of the invention, the structural representation of system.
Embodiment
In the embodiment of the invention, for realizing being redirected, then can be respectively send beep-page message at user terminal to first network and second network, and make user terminal before inserting second network, described beep-page message can arrive second network; So that user terminal receives described beep-page message at first network, and after determining to be redirected in second network, can insert second network apace, and in second network, respond beep-page message, to realize redirect operation.Wherein, first network and second network are specifically as follows the network that adopts different access technologies or the network of supporting different business or the like.
In the process that sends beep-page message, be specifically as follows: after the call request that the reception calling terminal is sent, then send beep-page message to first network and second network respectively at user terminal, so that user terminal can be in first network paging receiving message and in second network, respond beep-page message, thereby can be so that user terminal can respond beep-page message apace, and then the call establishment after the ream weight orientation be accelerated greatly.
In addition, the timer of wait-for-response beep-page message can also be set respectively in first network and second network, corresponding timing length is that first network and second network are waited for the maximum duration that receives the response beep-page message.
Set up process for further accelerating corresponding call, then can also initiate to be registered to respectively in first network and second network in the process of registration at user terminal; And, upgrade in the process of operation in the user terminal executing location, executing location is upgraded operation in first network and second network respectively.
In the embodiment of the invention, with the SAE/LTE network as first network, the 2G/3G network is as second network, and be treated to example with two the sending out of carrying out beep-page message at Paging Function (paging function) entity, promptly can be after Paging Function entity receives the call setup request message of calling terminal transmission, according to the different registration areas at UE place, issue the CS beep-page message to the 2G/3G network respectively, issue PS territory beep-page message to/SAELTE network; Wherein, corresponding Paging Function entity can but be not limited to VCC AS entities such as (voice continuity application servers).Afterwards, UE from the SAE/LTE network redirection behind the 2G/3G network, the CS territory beep-page message in the 2G/3G network that makes an immediate response, thus reduced the time that redirect operation need take.
In this processing procedure, the timing length of the timer of the wait-for-response beep-page message in the corresponding 2G/3G network need satisfy: UE is redirected to before the CS territory of 2G/3G network the timer that should wait responds beep-page message can not be overtime.
In the embodiment of the invention, finish corresponding redirect operation process owing to adopt in the mode of SAE/LTE network and 2G/3G network while issuing page message.For this reason, UE need carry out corresponding co-location renewal process between MME and MSC in registration process, make UE in MME and MSC, to register simultaneously,, and then guarantee that redirect operation can reliably realize so that can preserve redirected required MM context at MSC.
Further, after Paging Function entity is receiving the call setup message that calling terminal sends,, can send paging request message to SAE/LTE network and 2G/3G network simultaneously according to the TA (tracking area) and the LA (lane place) at UE place.Quarter at and send the RRC connection request message that has the VoIP indication to eNB after UE among the LTE receives beep-page message, afterwards, if eNB judges the CS territory that UE need be redirected in the 2G/3G network, then issue the RRC connection refused message to UE, comprise redirection information in the message, UE carries out corresponding re-orientation processes process with indication, even UE reselects to CS territory in the 2G/3G network according to the indication of network terminal.
In redirection process, owing in MSC, preserve the MM context of UE, therefore, the user terminal CS beep-page message that Paging Function entity issues to the 2G/3G network that can make an immediate response, and then carry out CS territory call establishment in the follow-up 2G/3G network.
For ease of understanding, be described below in conjunction with the concrete applicable procedures of accompanying drawing to the embodiment of the invention to the embodiment of the invention.
As shown in Figure 1, the re-orientation processes process that provides of the embodiment of the invention may further comprise the steps:
Step 1, Paging Function entity MGCF (the MGCF)/MGW (media gateway) in the 2G/3G network sends INVITE (invitation) message, sets up to call out with request to connect;
Step 2 after MGCF/MGW receives INVITE, sends IAM (initialization address) message to MSC (mobile switching centre), sets up corresponding circuit with request and connects;
Step 3 after MSC receives the IAM message that the MGCF/MGW on upper strata sends, then sends paging Paging message to BSS;
Step 4, after BSS (base station system) received Paging message, all sub-districts of continuing to administer to it sent Paging message;
The Paging message that sends in this step 4 may not be in the 2G/3G network because of UE is current, causes UE can't receive this Paging message.
Step 5, Paging Function entity also the SAE GW (evolution gateway) in the SAE/LTE network send setup requests Incoming VoIP call message;
This step 5 can be carried out simultaneously with step 1, perhaps, follows execution in step 1 after the execution in step 5, perhaps, follows execution in step 5 after the execution in step 1;
Step 6 after SAE GW receives Incoming VoIP call message, sends Paging message to MME (Mobility Management Entity);
Step 7 after MME receives corresponding Paging message, continues to send Paging message to eNB (enhancing base station);
Step 8 after eNB receives Paging message, sends Paging to its all sub-districts of administering again, so that Paging message is sent to UE, realizes the paging to UE;
Step 9 after UE receives Paging message, sends RRC connection request RRCconnection request message to eNB, and comprise V parameter oIP Indicator (VoIP indication) in this message, is the VoIP business with the indication current business;
Step 10, after eNB receives RRC connection request message, after judgement needs to carry out redirect operation, send the RRC connection to UE and refuse RRC connection reject message, the cause value that comprises in this message is made as redirected, with as the indication information that is redirected;
Step 11, UE to BSS channel request Channel request message, sets up channel with request after connecting the Target cell of refusal indication gravity treatment in the 2G/3G network according to RRC;
Step 12 is after BSS receives described Channel request message, to UE transmitting channel assignment Immediate assignment message;
Step 13 after UE receives Immediate assignment message, sends page response Paging response message to MSC;
Step 14 is carried out corresponding C S call establishment process in the 2G/3G network;
Step 15, after the foundation of CS calling procedure was finished, MSC sent address assignment to MGCF/MGW and finishes ACM message, at this moment, has set up path between MSC and the MGCF/MGW;
Step 16, after the called end path setting was finished, MSC also sent to MGCF/MGW and replys ANM;
Step 17 after MGCF/MGW receives ANM, sends successful respond 200OK message to Paging Function entity.
Just can realize redirect operation by above-mentioned processing procedure at called end UE, and in the whole redirection process, owing to adopted in 2G/3G network and SAE/LTE network and sent beep-page message simultaneously, make after execution in step 10, UE need not to carry out the processing procedure of corresponding access 2G/3G network, and can directly respond corresponding beep-page message at the 2G/3G network, thus can reduce the time that redirection process need take greatly, reduce the time delay of call setup.
The embodiment of the invention also provides and has realized redirected system in a kind of communication system, and its specific implementation structure can comprise as shown in Figure 2 with the lower part:
(1) beep-page message dispensing device is used for sending beep-page message at user terminal to first network and second network;
This device is the device that sends beep-page message, and it specifically can comprise with lower unit:
The call information receiving element is used to receive the call request that calling terminal is sent;
The beep-page message transmitting element, be used for respectively sending beep-page message at user terminal to first network and second network, and make user terminal before inserting second network, described beep-page message can arrive second network, so as user terminal can be in first network paging receiving message and in second network, respond beep-page message.
This device specifically can be arranged in the entity of first network, also can be arranged in the entity of second network, perhaps, also can be independent of first network and second network settings.
(2) first networks are used for the beep-page message that the beep-page message dispensing device is sent is sent to user terminal, and are used for indicating user terminal and are redirected to second network;
(3) second networks, be used for the beep-page message that paging receiving message dispensing device is sent, and reception is redirected to the response beep-page message that the user terminal in second network is sent, because second network has received corresponding beep-page message,, user terminal just can directly send the response beep-page message to network side so need not to wait for paging receiving message.
Alternatively, the timer of wait-for-response beep-page message can also be set respectively in described first network and second network, corresponding timing length is that first network and second network are waited for the maximum duration that receives the response beep-page message, so that control first network and second network after waiting for that scheduled duration is not received the response beep-page message yet, determine paging failure.
Based on said system, relevant user terminals is if receive beep-page message in first network, and determine to navigate to second network, then can directly return response beep-page message (because having received and issued corresponding beep-page message before second network) to second network, again this user terminal is carried out paging and need not second network, at this moment, being equivalent to user terminal for second network receives beep-page message and returns the response beep-page message from Home Network, make call establishment accelerate greatly, thereby need time of taking in the process of save to set up calling out.
The concrete structure of the user terminal in the system that the embodiment of the invention provides still as shown in Figure 3, it specifically can comprise with lower unit:
The beep-page message receiving element is used for by the first network paging receiving message, and described beep-page message is the beep-page message that sends to first network and second network respectively, and before user terminal inserted second network, described beep-page message had arrived second network;
The redirect operation unit is used for after described beep-page message receiving element paging receiving message, if determine that user terminal need be redirected in second network, then returns the response beep-page message in second network, to insert second network; At this moment, because second network had been received corresponding beep-page message before user terminal inserts, the response beep-page message that former directly process user terminal is sent, and need not after user terminal inserts second network, to carry out again the corresponding processing procedure that sends beep-page message, greatly reduce the time delay in the redirection process;
Wherein, whether user terminal needs to be redirected in second network and can be determined by first network.
Set up process for further speed call, reduce calling establishment time delay, alternatively, can also be registered to simultaneously in first network and second network when user terminal is initiated registration, at this moment, relevant user terminals can also comprise with lower unit:
Synchronously registering unit is used for initiating registration, and is registered to respectively in first network and second network, thus make in first network and second network all can the recording user terminal relevant information, as information such as MM contexts;
The sync bit updating block is used for upgrading operation at first network and the second network executing location respectively, can carry out synchronously to guarantee the location update operations in first network and second network.
First network of mentioning in described system of the embodiment of the invention and the user terminal and second network can be PS network (as SAE/LTE network etc.) and CS network (as 2G/3G network etc.).
In sum, in order making in redirection process, can to reduce the time that cell reselection process and page response process consume as far as possible, and then to reduce the time delay of whole call establishment, promptly reduce the time delay in the redirection process.And, in whole paging processing procedure, can keep consistency with current agreement, simplified the realization of technical scheme.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1, realize redirected method in a kind of communication system, it is characterized in that, comprising:
Send beep-page message at user terminal to first network and second network respectively, and make user terminal before inserting second network, described beep-page message can arrive second network;
When user terminal responds beep-page message in first network, need be redirected in second network by the first network informing user terminal;
Described user terminal inserts and has received second network of described beep-page message, and responds beep-page message in second network.
2, method according to claim 1 is characterized in that, this method also comprises:
Described user terminal is initiated registration, and is registered to respectively in first network and second network, and upgrades in the process of operation in described user terminal executing location, and executing location is upgraded operation in first network and second network respectively.
3, method according to claim 1 and 2, it is characterized in that, described first network is System Architecture Evolution SAE network or Long Term Evolution LTE network, described second network is 2G network or 3G network, and described user terminal inserts second network received described beep-page message and comprises:
After user terminal receives the connection refused message that the enhancing base station eNB in SAE network or the LTE network sends, according to the Target cell of the indication information gravity treatment that is redirected in the described connection refused message in 2G network or the 3G network.
4, a kind of method that sends beep-page message is characterized in that, comprising:
Receive the call request that calling terminal is sent;
Send beep-page message at described user terminal to first network and second network respectively, and make described user terminal before inserting second network, described beep-page message can arrive second network.
5, a kind of device that sends beep-page message is characterized in that, comprising:
The call information receiving element is used to receive the call request that calling terminal is sent;
The beep-page message transmitting element is used for simultaneously sending beep-page message at described user terminal to first network and second network, and makes described user terminal before inserting second network, and described beep-page message can arrive second network.
6, a kind of method of being redirected of realizing is characterized in that, comprising:
User terminal is by the first network paging receiving message, and described beep-page message be the beep-page message that sends to first network and second network respectively, and at described user terminal before access second network, described beep-page message has arrived second network;
If described user terminal need be redirected in second network, then this user terminal inserts second network, and responds beep-page message in second network.
7, method according to claim 6 is characterized in that, this method also comprises:
Initiate to be registered to respectively in first network and second network in the process of registration at described user terminal, and upgrade in the process of operation in described user terminal executing location, executing location is upgraded operation in first network and second network respectively.
8, a kind of user terminal is characterized in that, comprising:
The beep-page message receiving element, be used for by the first network paging receiving message, described beep-page message is the beep-page message that sends to first network and second network respectively, and before described user terminal was inserting second network, described beep-page message had arrived second network;
The redirect operation unit is used for after described beep-page message receiving element paging receiving message, if described user terminal need be redirected in second network, then inserts second network, and respond beep-page message in second network.
9, user terminal according to claim 8 is characterized in that, also comprises:
Registering unit is used for initiating registration, and is registered to respectively in first network and second network synchronously;
The sync bit updating block is used for upgrading operation at first network and the second network executing location respectively.
10, realize redirected system in a kind of communication system, it is characterized in that, comprising:
The beep-page message dispensing device is used for sending beep-page message at user terminal to first network and second network, and makes described user terminal before inserting second network, and described beep-page message can arrive second network;
First network is used for the beep-page message that the beep-page message dispensing device is sent is sent to user terminal, and is used for indicating user terminal and is redirected to second network;
Second network is used for the beep-page message that paging receiving message dispensing device is sent, and reception is redirected to the response beep-page message that the user terminal in second network is sent.
11, system according to claim 10 is characterized in that, described first network is SAE network or LTE network, and described second network is 2G network or 3G network.
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| CN2007103044228A CN101472310B (en) | 2007-12-27 | 2007-12-27 | Method, device and system for implementing reorientation in communication system |
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| CN2007103044228A CN101472310B (en) | 2007-12-27 | 2007-12-27 | Method, device and system for implementing reorientation in communication system |
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