CN100499713C - Method of call transfer in mobile communication system - Google Patents
Method of call transfer in mobile communication system Download PDFInfo
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- CN100499713C CN100499713C CNB2006100334385A CN200610033438A CN100499713C CN 100499713 C CN100499713 C CN 100499713C CN B2006100334385 A CNB2006100334385 A CN B2006100334385A CN 200610033438 A CN200610033438 A CN 200610033438A CN 100499713 C CN100499713 C CN 100499713C
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Abstract
本发明涉及一种移动通信系统中的呼叫转移方法，为解决现有移动通信系统中需等待第三方振铃或接听之后呼叫转移主控方才能挂机的问题，本发明中，当主控方拨打第三方号码发起呼叫转移时，移动交换中心会判断是先收到来自主控方的拆线消息还是来自第三方的回铃消息；如果是先收到拆线消息，则移动交换中心在保留主控方的MSC侧所有资源、同时缓存主控方的拆线消息的前提下，释放主控方占用的其他资源；然后，移动交换中心会判断是否在预定时间内收到来自第三方的回铃消息，如果是则释放其缓存的主控方拆线消息，使第二方与第三方之间建立呼叫。通过本发明的方案，主控方不需要等待第三方的回铃消息就可以直接挂机，从而可提前释放相关资源。
The invention relates to a call transfer method in a mobile communication system. In order to solve the problem in the existing mobile communication system that the master controller of the call transfer needs to wait for a third party to ring or answer the call before hanging up, in the invention, when the master controller dials When a third-party number initiates a call transfer, the mobile switching center will judge whether to receive the disconnection message from the main controller or the ringback message from the third party first; Under the premise of buffering all the resources on the MSC side of the control party and simultaneously buffering the disconnection message of the control party, release other resources occupied by the control party; then, the mobile switching center will judge whether it receives a ringback from the third party within the predetermined time message, if it is, release the cached master control party disconnection message, so that a call can be established between the second party and the third party. Through the solution of the present invention, the main control side can hang up directly without waiting for the ringback message from the third party, so that relevant resources can be released in advance.
Description
Technical field
The present invention relates to the calling transfer technology in the communication system, more particularly, relate to a kind of implementation method that allows the calling transfer master control side calling transfer of on-hook immediately after dialing the third party in the mobile communication system.
Background technology
Calling transfer among the present invention, be meant one contracted should business the user can go an ongoing call transfer this user oneself then to withdraw from conversation to the third party.What wherein, this user shifted can be the conversation of own exhalation or the conversation of other people incoming call.
In the landline telephone communication system, can be by hooking or click the mode of " R " key, start calling transfer.Suppose that A is arranged, three users of B, C, wherein A is calling transfer master control side, then the calling transfer process is as follows: (1) at first, A calls out B, after B replied, A, B were in talking state (perhaps call out A by B, after A replied, A, B were in talking state); (2) then, the A transfer that makes a call is as required just called out C by A, for example claps the hook switch of telephone set or clicks " R " key on the telephone set, dials the number of C again; (3) on-hook immediately after the A dialing also can be after the ring-back tone of hearing from C, or just on-hook after A, the C conversation, and can set up conversation between B, the C this moment, shifts thereby finish call.
In mobile communication system, the signal flow of calling transfer as shown in Figure 1, wherein A is calling transfer master control side, the calling transfer process is as follows:
(1) user A is by dialing the number of user B, by " SEND " key calling party B (step 101 in the corresponding diagram 1), MSC (mobile switching centre) carries out call setup (step 102), makes to set up conversation (step 103) between A, the B, and in fact this is exactly the process of an ordinary call.
(2) user A clicks " SEND " key, MSC receives the Flash With Information message (step 104) of a sky, first calling branch is that user B is held (step 105), at this moment, main controlling user A can dial the number of third party user C again, by " SEND " key calling party C (step 106), MSC can set up second calling branch (step 107) after receiving this Flash With Information message again.
(3) hear ring-back tone (step 108) as A, or after A, C set up conversation, the party A-subscriber could on-hook (step 109) from C.During concrete operations, main controlling user A can click " END " key, sends to finish call request, and this moment, MSC can discharge all resources (step 110) that main controlling user A takies, and continue (step 111) between process user B, the C, shifts thereby finish call.
As seen, in mobile communication system, because A needs to wait for from ability on-hook after the ring-back tone of C at least, so the wait process after the A calling C takes and was approximately for 2 seconds, if C user shutdown also is provided with that Call Forwarding moves or Voice Mailbox, then this process need continue about 10-15 second, and A could withdraw from on-hook, makes to set up conversation between B, the C and connect.As seen, there is the oversize problem of calling transfer process required time in the existing mobile communication system.
Summary of the invention
At the above-mentioned defective of prior art, the present invention to solve need to wait for third party's ring in the existing mobile communication system or answer after the calling transfer master control just now can on-hook problem, allow the on-hook immediately after dialing the third party of calling transfer master control side.
For solving the problems of the technologies described above, the invention provides the call transferring method in a kind of mobile communication system, it is characterized in that, in the process of master control side and second party conversation,, master control side makes a call when shifting when dialing third party's number, handle according to the following steps:
(S1) mobile switching centre at place, master control side judges it is to receive clear message from master control side earlier, or receive earlier from third-party ring-back message;
(S2) if receive the clear message of master control side earlier, then described mobile switching centre is keeping all resources of MSC side of master control side, simultaneously under the prerequisite of the clear message of buffer memory master control side, is discharging other resources that master control side takies;
(S3) mobile switching centre judges whether to receive in the given time from described third-party ring-back message, if then discharge all resources of MSC side of master control side and master control side's clear message of buffer memory, makes to set up between described second party and the third party and calls out.
In the step (S3) of the method for the invention, if described mobile switching centre fail to receive in the given time from described third-party ring-back message, then discharge master control side's clear message of its buffer memory, and do the overtime processing of taking out stitches.
In the step (S2) of the method for the invention, mobile switching centre can discharge the shared base station controller in master control side, base station transceiver and interface-free resources, and removes the VLR Database state of master control side.
In method of the present invention, if judging described mobile switching centre in described step (S1) receives earlier from third-party ring-back message, then realize calling transfer according to the following steps: mobile switching centre waits for the clear message from master control side, in case receive then discharge all resources that master control side takies immediately, and remove the VLR Database state of master control side, make to set up between described second party and the third party and call out.
As shown from the above technical solution, among the present invention, master control side does not need to wait for the just directly on-hook of third-party ring-back message, and mobile switching centre realizes normal calling transfer by buffer memory master control side clear message and the method that just discharges this clear message when receiving third party's ring-back message; Concerning the user, can save the time of waiting for third party's ring, and initiate new calling and unaffected after the on-hook again.In addition,, eat dishes without rice or wine and B side resource, and can not increase MSC side use resource so concerning operator, can save owing in the calling transfer process, can discharge related resource in advance.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is that the calling transfer in the existing mobile communication system realizes signal flow graph;
Fig. 2 is the calling transfer flow chart in a preferred embodiment of the invention.
Embodiment
In the prior art, in case take out stitches in master control side, mobile switching centre will discharge its clear message; If master control side's clear message is early than third party's ring-back message, then whole calling belongs to end, and second party can receive that on-hook busy tone, third party then can not receive any message again; So after need waiting for third party's ring or answering, master control just now can on-hook.The scheme of having introduced buffer memory master control side clear message among the present invention and having postponed to discharge, if master control side's clear message is early than third party's ring-back message, then MSC understands buffer memory master control side clear message, and when receiving third party's ring-back message, just discharge this clear message, make to set up between second party and the third party and call out.Make master control side not need to wait for the just directly on-hook of third-party ring-back message, thereby can discharge related resource in advance.Why wanting buffer memory master control side clear message, is because after the third party has ring-back message, and master control side's clear message must be arranged, and could realize calling transfer.
Be the calling transfer flow process in a preferred embodiment of the invention as shown in Figure 2.As can be seen from Figure 2, when master control side A makes a call (step 301) when shifting, the MSC at its place (mobile switching centre) can judge it is to receive the clear message of master control side A earlier or receive ring-back message (step 302) from third party C earlier.If receive ring-back message earlier from third party C, then enter step 304, carry out calling transfer by traditional mode, just handle: promptly behind the clear message of receiving from A by flow process shown in Figure 1, discharge all resources that A takies, and remove VDB (VLR Database, the i.e. VLR Database) state of master control side, allow set up between second party B and the third party C and call out.
As can be seen from Figure 2, if MSC (mobile switching centre) receives earlier is the clear message that produces because of the A on-hook, what this moment, MSC judged the current initiation of master control side A is the diverting call of enhancing property.From step 303 as can be seen, at the diverting call of enhancing property, MSC can discharge the shared BSC of master control side A (base station controller), BTS (base station transceiver) and interface-free resources, remove the VDB state of master control side, but all resources of MSC side that keep master control side, the clear message of buffer memory master control side simultaneously.Then, MSC judges whether to receive in the given time the ring-back message (step 305) from third party C, from step 306 as can be seen, in case receive ring-back message from third party C, MSC just discharges the clear message of the master control side A of its buffer memory, continue to use existing calling transfer flow process simultaneously and realize follow-up function, just realize calling transfer, make to set up between B, the C and call out.Answering, refusing after foundation is called out between B, the C listened, the on-hook handling process is same as the prior art.
From step 307 as can be seen, as if any message of not receiving in the preset time section from third party C, then MSC can do the overtime processing of taking out stitches, and this moment, second party B can receive that on-hook busy tone, third party C then can not receive any message again.
By the foregoing description as can be known,, eat dishes without rice or wine and B side resource, and can not increase MSC side use resource so concerning operator, can save owing in the calling transfer process, can discharge related resource in advance; Owing to do not need to wait for the just directly on-hook of third-party ring-back message, concerning the user, can save the time of waiting for third party's ring, and can initiate new calling immediately again after the on-hook.
Claims (4)
1, the call transferring method in a kind of mobile communication system is characterized in that, in the process of master control side and second party conversation, makes a call when shifting when master control side dials third party's number, handles according to the following steps:
(S1) mobile switching centre at place, master control side judges it is to receive clear message from master control side earlier, or receive earlier from third-party ring-back message;
(S2) if receive the clear message of master control side earlier, then described mobile switching centre is keeping all resources of MSC side of master control side, simultaneously under the prerequisite of the clear message of buffer memory master control side, is discharging other resources that master control side takies;
(S3) mobile switching centre judges whether to receive in the given time from described third-party ring-back message, if then discharge all resources of MSC side of master control side and master control side's clear message of buffer memory, makes to set up between described second party and the third party and calls out.
2, method according to claim 1, it is characterized in that, in described step (S3), if described mobile switching centre fails to receive in the given time from described third-party ring-back message, then discharge master control side's clear message of its buffer memory, and do the overtime processing of taking out stitches.
3, method according to claim 1, it is characterized in that, in described step (S2), mobile switching centre can discharge the shared base station controller in master control side, base station transceiver and interface-free resources, and removes the VLR Database state of master control side.
4, method according to claim 1, it is characterized in that, if judging described mobile switching centre in described step (S1) receives earlier from third-party ring-back message, then realize calling transfer according to the following steps: mobile switching centre waits for the clear message from master control side, in case receive then discharge all resources that master control side takies immediately, and remove the VLR Database state of master control side, make to set up between described second party and the third party and call out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100334385A CN100499713C (en) | 2006-01-26 | 2006-01-26 | Method of call transfer in mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100334385A CN100499713C (en) | 2006-01-26 | 2006-01-26 | Method of call transfer in mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1874379A CN1874379A (en) | 2006-12-06 |
| CN100499713C true CN100499713C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100334385A Expired - Fee Related CN100499713C (en) | 2006-01-26 | 2006-01-26 | Method of call transfer in mobile communication system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101198089B (en) * | 2006-12-07 | 2010-09-22 | 华为技术有限公司 | Method, system and voice call continuity server for implementing call transfer service |
| CN101420668B (en) | 2007-10-25 | 2010-10-13 | 华为技术有限公司 | Method, system and apparatus for implementing call forwarding |
| CN101420669B (en) * | 2007-10-25 | 2010-08-25 | 华为技术有限公司 | Method, system and apparatus for call forwarding |
| CN102076043B (en) * | 2009-11-24 | 2015-09-16 | 中兴通讯股份有限公司 | A kind of method and system realizing Incoming reorientation |
| CN101754307B (en) * | 2009-12-16 | 2014-12-31 | 中兴通讯股份有限公司 | Mobile for carrying out the inter-office switching between mobile switching center and mobile communication network |
| CN113473397B (en) * | 2021-08-23 | 2022-07-15 | 珠海格力电器股份有限公司 | Call forwarding method, storage medium and communication equipment |
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2006
- 2006-01-26 CN CNB2006100334385A patent/CN100499713C/en not_active Expired - Fee Related
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