CN1992961A - Method of signaling connection in digital mobile communication systems - Google Patents
Method of signaling connection in digital mobile communication systems Download PDFInfo
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- CN1992961A CN1992961A CNA2005100974207A CN200510097420A CN1992961A CN 1992961 A CN1992961 A CN 1992961A CN A2005100974207 A CNA2005100974207 A CN A2005100974207A CN 200510097420 A CN200510097420 A CN 200510097420A CN 1992961 A CN1992961 A CN 1992961A
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Abstract
The invention relates to a method for connecting signal in the switch process of digit mobile communication system, wherein it uses terminal control switch mechanism, and it comprises that: 1, in each conversation, network device holds one signal buffer area for relative user; 2, in one conversation, said signal buffer area stores the network command to the user, network device receives switch complete message from terminal, and resends the signal in buffer area to the new base station to be sent to the terminal; 3, clearing said buffer area, and recording new signal; when receives the switch complete message again before ending service, it will repeat step 2. The invention can avoid losing signal.
Description
Technical field
The present invention relates to the method that signaling continues in a kind of switching that is applicable to digital mobile communication system, relate in particular to the method that signaling continues in a kind of switching that is applicable to the digital mobile communication system that adopts terminal control handover mechanism.
Background technology
Most mobile communication system adopt the handover mechanism of network controls, under this handover mechanism, what network was definite in the handoff procedure knows any moment terminal by which base station services, and the signaling relevant with calling that network is handed down to terminal can be sent to terminal by this base station accurately.
The handover mechanism of terminal control realizes that easily algorithm is simple.But handover mechanism for terminal control, initiate by terminal owing to switch, network side is finished preceding and is not known that terminal initiated switching in switching, and the signaling that therefore is handed down to terminal still issues via former serving BS, and terminal can't receive these signalings.
Therefore need in a kind of handover mechanism that solves by terminal control, because network side can't know that terminal initiates the method that the time of switching causes the problem that signaling loses.
Summary of the invention
Purpose of the present invention can be realized that by the method that signaling in the switching of following digital mobile communication system continues this method may further comprise the steps:
(1) in each calling task, network equipment is safeguarded a signaling buffer area for the associated user of this task;
(2) in a calling task, the signaling that described signaling buffer area storage networking issues to this user in this calling task; Network equipment resends the signaling in this subscriber signaling buffer area to this terminal by new serving BS, to guarantee the complete of this user signaling process after receiving the handoff completion message that terminal sends;
(3) empty described signaling buffer area, and the new signaling of opening entry, before this calls out task termination, if receive handoff completion message once more, then repetitive operation step (2).
Preferably, described step (2) specifically comprises:
(a) the terminal that switches begun switch to attempt but switch carry out, when not finishing as yet, if end subscriber is had any signal to send or responds, local switch can send to base station controller to end signal or the corresponding signal that produces according to response with this;
(b) base station controller is issued the former serving BS of switching terminal with described opposite end subscriber signal or response, and this signal can be got up by the BSC buffer memory simultaneously;
(c) the former serving BS of switching terminal aloft interface send described opposite end subscriber signal or the response that base station controller is sent, but since this moment switching terminal do not served by it, in fact switching terminal can not receive described opposite end subscriber signal or response;
(d) switching terminal continues handoff procedure;
(e) switching terminal switches and to finish, and base station controller resends new serving BS to switching terminal with the described opposite end subscriber signal of buffer memory or response;
(f) the new serving BS of switching terminal sends to switching terminal with described opposite end subscriber signal or response.
For the wireless communication system of the handover mechanism that adopts terminal control, use method of the present invention and can solve the problem of losing signaling in the switching.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 for the present invention calling terminal switch finish before the principle schematic of called subscriber when sending signal;
Fig. 2 for the present invention calling terminal switch finish before principle schematic during called subscriber's off-hook;
Fig. 3 for the present invention calling terminal switch finish before principle schematic during called subscriber's rejection;
Fig. 4 the present invention calling terminal switch finish before the principle schematic during on-hook immediately behind called subscriber's off-hook.
Embodiment
Embodiment 1: the called subscriber sent signal before the calling terminal switching was finished
In the wireless communication system that terminal control is switched, network equipment is handled message (or signaling) between transfer period according to following flow process:
1) at first, in each calling task, network equipment is safeguarded a signaling buffer area, the signaling that storage networking issues to this user for the associated user of this task in this calling task.
2) in a calling task, network equipment resends the signaling in this subscriber signaling buffer area to terminal by new serving BS, to guarantee the complete of this user signaling process after receiving the handoff completion message that terminal sends.
Empty the signaling buffer area when 3) step 2) finishing, and the new signaling of opening entry, before this calls out task termination, if receive handoff completion message once more, repetitive operation step 2 then).
Among Fig. 1, the terminal that 121 representatives switch; The new serving BS BS2 of the terminal that 122 representatives switch; The former serving BS BS1 of the terminal that 123 representatives switch; 124 represent base station controller, Base Station Controller (BSC); 125 represent local switch or local switching control center; 126 representatives have begun to switch at switching terminal, but also switch finish during, any signal (Any signal) that end subscriber is sent.
Concrete steps are as follows:
Attempt 101-102. the terminal that switches has begun to switch, but switch well afoot, do not finish as yet, if having any signal 126 to send to end subscriber this moment, local switch 125 can send to base station controller 124 with this signal;
103-104.BSC will issue the former serving BS of switching terminal to the signal that end subscriber sends, this signal can be got up by the BSC buffer memory simultaneously;
105. the former serving BS 123 of switching terminal aloft interface sends the opposite end subscriber signal 126 that BSC sends, but since this moment switching terminal do not served by it, in fact switching terminal can not receive this opposite end subscriber signal 126;
106-111. switching terminal handoff procedure;
112-113. switching terminal switches and to finish, BSC resends new serving BS 122 to switching terminal with the opposite end subscriber signal 126 of buffer memory;
114-115. the new serving BS 122 of switching terminal sends to switching terminal with opposite end subscriber signal 126.
Wherein, for end subscriber with respect to switching terminal.Two users that relate in the call, one is the calling subscriber, another is the called subscriber.The two all may switch, and we are referred to as switching terminal the terminal that switches, and another then is called end subscriber.
Embodiment 2: calling terminal switches finishes called subscriber's off-hook before.
Referring to Fig. 2, after calling terminal initiates to switch, before switching is finished, called subscriber's off-hook, switch has sent polarity reversing signal to BSC, this signal is sent to the former serving BS BS1 of calling terminal, and this moment, calling terminal was no longer served by BS1, therefore can't receive the polarity reversing signal that network issues.
But, BSC can buffer memory this polarity reversing signal, calling terminal switch finish after, promptly after receiving Handover_Security_Comp message, BSC will be again sends to calling terminal with the new serving BS BS2 of polarity reversing signal by calling terminal.
Concrete operations are as follows:
201-202. calling terminal has begun switch to attempt, and carries out but switch, finish as yet, this moment called subscriber's off-hook, switch sends to BSC with polarity reversing signal;
203-204.BSC polarity reversing signal is issued the former serving BS of calling terminal, and this signal can be got up by the BSC buffer memory simultaneously;
205. the former serving BS of calling terminal aloft interface sends polarity reversing signal, but since this moment calling terminal do not served by it, in fact calling terminal can not receive this polarity reversing signal;
206-212. calling terminal handoff procedure;
213-214. calling terminal switches and to finish, BSC resends new serving BS to calling terminal with the polarity reversing signal of buffer memory;
215-216. the new serving BS of calling terminal sends to calling terminal with polarity reversing signal.
Embodiment 3: calling terminal switches finishes called subscriber's rejection before.
Referring to Fig. 3, after calling terminal initiates to switch, before switching is finished, called subscriber's rejection, switch has sent on-hook signal Hook on to BSC, this signal is sent to the former serving BS BS1 of calling terminal, and this moment, calling terminal was no longer served by BS1, therefore can't receive the on-hook signal Hook on that network issues.
But, BSC can buffer memory this on-hook signal, calling terminal switch finish after, promptly after receiving Handover_Security_Comp message, BSC will be again sends to calling terminal with the new serving BS BS2 of on-hook signal by calling terminal.
Concrete operations are as follows:
Attempt 301-302. calling terminal has begun to switch, carry out, do not finish as yet but switch, called subscriber's rejection this moment, switch sends to BSC with on-hook signal Hook on;
303-304.BSC on-hook signal is issued the former serving BS of calling terminal, and this signal can be got up by the BSC buffer memory simultaneously;
305. the former serving BS of calling terminal aloft interface sends on-hook signal, but since this moment calling terminal do not served by it, in fact calling terminal can not receive this on-hook signal;
306-311. calling terminal handoff procedure;
312-313. calling terminal switches and to finish, BSC resends new serving BS to calling terminal with the on-hook signal of buffer memory;
314-315. the new serving BS of calling terminal sends to calling terminal with on-hook signal.
Embodiment 4: on-hook immediately behind called subscriber's off-hook before the calling terminal switching is finished.
Referring to Fig. 4, after calling terminal initiates to switch, before switching is finished, on-hook immediately behind called subscriber's off-hook, switch has successively sent polarity reversing signal and on-hook signal Hook on to BSC, this two each and every one signal successively is sent to the former serving BS BS1 of calling terminal, and this moment, calling terminal was no longer served by BS1, therefore can't receive polarity reversing signal and the on-hook signal that network issues.
But, these two signals of BSC meeting buffer memory, calling terminal switch finish after, promptly after receiving Handover_Security_Comp message, BSC will be again sends to calling terminal with polarity reversing signal and on-hook signal according to the new serving BS BS2 of original order by calling terminal.
Concrete operations are as follows:
Attempt 401. calling terminal has begun to switch, carry out, do not finish as yet but switch;
402. called subscriber's off-hook, switch sends to BSC with polarity reversing signal, and BSC sends polarity reversing signal by former serving BS, simultaneously its buffer memory is got up, but because this moment, calling terminal was not served by former serving BS, in fact calling terminal can not receive this polarity reversing signal;
403. on-hook immediately again behind called subscriber's off-hook, switch sends to BSC with on-hook signal, and BSC sends on-hook signal by former serving BS, simultaneously its buffer memory is got up, but because this moment, calling terminal was not served by former serving BS, in fact calling terminal can not receive this on-hook signal;
404-409. calling terminal handoff procedure;
410. calling terminal switches and to finish, BSC resends new serving BS to calling terminal with the polarity reversing signal of buffer memory, and new serving BS is issued calling terminal with it again;
411. there is of short duration communication process the centre of called off-hook and on-hook;
412.BSC the on-hook signal of buffer memory is resend new serving BS to calling terminal, and new serving BS is issued calling terminal with it again;
For the wireless communication system of the handover mechanism that adopts terminal control, use the present invention and can solve the problem of losing signaling in the switching.
Claims (7)
1. the method that signaling continues in the switching of a digital mobile communication system is used to adopt terminal control handover mechanism, it is characterized in that, may further comprise the steps:
(1) in each calling task, network equipment is safeguarded a signaling buffer area for the associated user of this task;
(2) in a calling task, the signaling that described signaling buffer area storage networking issues to this user in this calling task; Network equipment resends the signaling in this subscriber signaling buffer area to this terminal by new serving BS, to guarantee the complete of this user signaling process after receiving the handoff completion message that terminal sends;
(3) empty described signaling buffer area, and the new signaling of opening entry, before this calls out task termination, if receive handoff completion message once more, then repetitive operation step (2).
2. the method for claim 1 is characterized in that, described network equipment is base station controller (124).
3. the method for mobile terminal to search neighbor base station as claimed in claim 2 is characterized in that, described step (2) specifically comprises:
(a) the terminal that switches begun switch to attempt but switch carry out, when not finishing as yet, if end subscriber is had any signal to send or responds, local switch (125) can send to base station controller (124) to end signal or the corresponding signal that produces according to response with this;
(b) base station controller (124) is issued the former serving BS (123) of switching terminal with described opposite end subscriber signal or response, and this signal can be got up by the BSC buffer memory simultaneously;
(c) the former serving BS (123) of switching terminal aloft interface send described opposite end subscriber signal or the response that base station controller (124) is sent, but because this moment, switching terminal was not served by it, in fact switching terminal can not receive described opposite end subscriber signal or response;
(d) switching terminal continues handoff procedure;
(e) switching terminal switches and to finish, and base station controller (124) resends new serving BS (122) to switching terminal with the described opposite end subscriber signal of buffer memory or response;
(f) the new serving BS (122) of switching terminal sends to switching terminal with described opposite end subscriber signal or response.
4. method as claimed in claim 3 is characterized in that, in the step (a) end subscriber is sent signal (126).
5. method as claimed in claim 3 is characterized in that, in the step (a) the end subscriber response is off-hook, and at this moment local switch (125) can send polarity reversing signal to base station controller (124).
6. method as claimed in claim 3 is characterized in that, in the step (a) the end subscriber response is rejection, and at this moment local switch (125) can send on-hook signal to base station controller (124).
7. method as claimed in claim 3 is characterized in that, in the step (a) the end subscriber response is on-hook immediately behind the off-hook, and local switch (125) meeting at this moment be sent polarity reversing signal and on-hook signal to base station controller (124).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100974207A CN1992961B (en) | 2005-12-28 | 2005-12-28 | Method of signaling connection in digital mobile communication systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100974207A CN1992961B (en) | 2005-12-28 | 2005-12-28 | Method of signaling connection in digital mobile communication systems |
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| Publication Number | Publication Date |
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| CN1992961A true CN1992961A (en) | 2007-07-04 |
| CN1992961B CN1992961B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005100974207A Expired - Fee Related CN1992961B (en) | 2005-12-28 | 2005-12-28 | Method of signaling connection in digital mobile communication systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020121A1 (en) * | 2008-08-18 | 2010-02-25 | 华为技术有限公司 | Method and apparatus for switching terminals in the course of transmission of messages |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI102654B1 (en) * | 1996-02-22 | 1999-01-15 | Nokia Mobile Phones Ltd | A method for changing a base station in an ATM network radio extension |
| FI109503B (en) * | 1997-04-15 | 2002-08-15 | Nokia Corp | Prevention of packet loss during handover in a packet-based telecommunications network and handover procedure |
| EP0891114A1 (en) * | 1997-07-12 | 1999-01-13 | Telefonaktiebolaget Lm Ericsson | Method and system for performing an optimised hand over |
| US6717927B2 (en) * | 2002-04-05 | 2004-04-06 | Interdigital Technology Corporation | System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change |
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2005
- 2005-12-28 CN CN2005100974207A patent/CN1992961B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010020121A1 (en) * | 2008-08-18 | 2010-02-25 | 华为技术有限公司 | Method and apparatus for switching terminals in the course of transmission of messages |
| CN101656991B (en) * | 2008-08-18 | 2013-03-20 | 华为技术有限公司 | Method and equipment for switching terminal in message transmitting process |
| US8493936B2 (en) | 2008-08-18 | 2013-07-23 | Huawei Technologies Co., Ltd. | Method and device for handover between UEs in process of sending message |
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| Publication number | Publication date |
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| CN1992961B (en) | 2010-09-15 |
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