CN1604682A - Data packet communication path setting method in mobile communication system switching - Google Patents
Data packet communication path setting method in mobile communication system switching Download PDFInfo
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- CN1604682A CN1604682A CNA200410074084XA CN200410074084A CN1604682A CN 1604682 A CN1604682 A CN 1604682A CN A200410074084X A CNA200410074084X A CN A200410074084XA CN 200410074084 A CN200410074084 A CN 200410074084A CN 1604682 A CN1604682 A CN 1604682A
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- mobile communication
- msc
- communication switch
- route
- path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
This invention involving a setting method of data packet communicational route when the mobile communication system switches.This method includes the following steps:step one,the mobile communication terminal which is to be executed switching send switch signal to the present basic station(BS_P) and the objective basic station(BS_C) at the same time;step two,extending the mobile communication switcher of the objective basic station to link to the current mobile communication switcher(MSC_P) and making the mobile terminal excute switch quickly by the extending route;step three,the present basic station (BS_P) bulletins to the COS,so as to implementate the optimum path rerouting of the switching objective area,COS reinstalls the optimum route to the mobile communication switcher;step four,by means of reinstalling,after the new connection of reinstalling,the mobile communication switcher(MSC_C) rescindes the route with the previous mobile communication switcher(MSC_P) and reinstalles connection by the new optimum route.
Description
Invention field
Data packet communication path setting method when the present invention relates to the mobile communication system switching, this method is used under the situation in the data packet communication path of resetting cable resource because of the switching between the mobile communication terminal switch (MSC), make and carry out in the handoff procedure contingent cable resource waste and drop to minimumly, and prevent the loss of packet.
Background technology
Generally speaking, connection between the cable resource of resetting for the switching of carrying out mobile communication terminal (mobile switch (MSC)) is called the path to be provided with again, this path is provided with the connection that should be provided with again rapidly to the area that terminal will move to again, simultaneously the signal communication amount that takes place because of the setting that connects and releasing increase and the network node burden little.
In addition, in wireless network to the support in wired interval than abundant relatively between radio zone, therefore, compare with the efficiency of resource, the loss of the unit in preventing to transmit and guarantee order are even more important.
The path that proposes for the mobility of supporting mobile communication terminal method to set up again can be divided into path expansion (Path Extension) mode and path heavy-route (Path Rerouting) mode as shown in Figure 1 substantially.
At first, shown in Fig. 1 (a), the path extended mode is a kind of when switching, continuously the mode in the appending property path of the virtual connection of expansion from previous base station to new base station.The switch (MSC) for present mobile communication terminal service is COS (Crossover switch, the superlative degree of being responsible for the packet exchange of mobile communication terminal connects switch), reaching purpose access point (access point) that mobile communication terminal moves before, expand new route continuously.
Above-mentioned path extended mode can easily be realized in original No.7 net, and the signal transmission (Signaling) that is used to reset connection realizes on the local horizontal between the switch, therefore little to the influence of wired network signal transmission structure, the handover time of implementation is short, can switch rapidly, have the advantage that to prevent the stop element loss and be easy to the guarantee order.
Shown in Fig. 1 (b), path heavy-route mode is to select the suitable switch on the path of previous setting as COS (Crossover Switch) as, and the path of COS still keeps in distant terminal, simultaneously, the path is reset with this in the interval of heavy-route from COS to new base station.
Above-mentioned path heavy-route mode is the switching development that realizes of the switch (anchor) that uses from the cellular radio network of existing IS-41 of utilization and GSM mode and a kind of mode of coming.In the heavy-route mode of path, according to the difference of COS selection algorithm, it is greatly different with characteristics such as path optimizations that handover is delayed, and proposed to be used for the multiple COS selection algorithm of wireless network handover at present.Representative dynamic COS selection algorithm has the method for handover-HOS (HandOff Switch) of NEC " WATMnet ".
But, above-mentioned path extended mode not only exists the transfer of data that causes because of extensions path to delay problem, and because continuous cable resource connection, may cause the skimble-skamble waste of connection resource, when reconnecting the base station of the previous visit of terminal, may circulate on the path (loop), when frequently switching, cause the repeated use of resource, must eliminate the process of circulation.
In addition, path heavy-route mode can be close to best and from new base station original path is set, and can prevent that inter-terminal data from delaying, and improves the Internet resources service efficiency.But problem is, when request during handover, owing to have selection course as the execution new route of the selection course of the core-COS of optimal path selection and selected COS, so, all property switching controls time increases, and the centre message transmission may take place interrupts.
And, the packet sequence when switching in order to ensure, when switching appearred in COS, current switch must transmit data packets for transmission again to COS.Therefore, switch is far away more now for COS distance, and the quantity that it must data packets for transmission is many more, at this moment, may loss of packets take place because of the COS buffer overflows (Overflow).In addition, switching the beginning front and back, packet is delayed increasing, and ensures that the algorithm of packet sequence becomes complicated more.
Summary of the invention
The present invention proposes in order to solve above-mentioned problems of the prior art just, data packet communication path setting method when purpose is to provide a kind of mobile communication system to switch, under the situation in the data packet communication path of resetting cable resource because of the switching between the mobile communication terminal switch (MSC), make and carry out in the handoff procedure contingent cable resource waste and drop to minimumly, and prevent the loss of packet.
For realizing as above purpose, feature of the present invention is to comprise the steps: step 1, and the mobile communication terminal that carry out switching is simultaneously to current base station (BS_P) and target BS (BS_C) transmission switching signal that will migration; Step 2, mobile communication switch (MSC_C) expansion of target BS that will migration is connected with previous mobile communication switch (MSC_P), and the path by expanding makes portable terminal carry out switching rapidly; Step 3, above-mentioned current base station (BS_P) are to its COS circular, so that realize that COS resets the optimal path to mobile communication switch (MSC_C) to the optimal path heavy-route of switching subject area; Step 4 is reset by above-mentioned, and after new connection was reset, mobile communication switch (MSC_C) was removed with the path of previous mobile communication switch (MSC_P) and is connected, and resets connection by new optimal path.
Data packet communication path setting method when mobile communication system of the present invention is switched has following effect, promptly, under the situation in the data packet communication path of resetting cable resource because of the switching between the mobile communication terminal switch (MSC), make and carry out that contingent cable resource waste drops to minimum in the handoff procedure, prevent under path extended mode in the past, contingent circulating phenomenon when visiting the base station of previous visit once more, reduce under the heavy-route mode of original path, for ensureing that data packet transmission is from the mobile communication switch of the present service quantity to COS data packets for transmission again, thereby can prevent loss of packets, ensure the order of packet.
Brief Description Of Drawings
Fig. 1 is used to illustrate that general in the past path connects extended mode and the exemplary plot that is connected the heavy-route mode;
Fig. 2 is the concept map of mobile communication system of the present invention data packet communication path setting method when switching;
Fig. 3 is that the data packet communication path of another mobile communication system of the present invention when switching is provided with flow chart.
Embodiment
The path that will be intended to provide a kind of mixing of the present invention is method to set up again, this method is used for that (MSC_P: the mobile communication switch of being responsible for coverage, present terminal place) responsible zone switches to another mobile communication switch (MSC_C: the responsible zone mobile communication switch in the zone, destination that responsible terminal will move) from a mobile communication switch, in order to make mobile communication terminal use cable resource efficiently, in the extended mode of original path, mixed path heavy-route mode.
With reference to the accompanying drawings, the preferred embodiments of the present invention are described.
Fig. 2 is a mobile communication system of the present invention when switching, the communication path method to set up concept map of packet.When the mobile communication terminal MT in being in service area " A " switches to service area " B ", the base station that the mobile communication switch MSC_P of terminal in being in service area " A " is responsible for (BS_P :) now to the base station of Terminal Service and be in mobile communication switch MSC_C in the service area " B " responsible will migration target BS (BS_C: terminal is wanted the target BS of migration) give notice simultaneously, carry out the switching of self.
So, the target BS BS_C of migration is confirmed switching intention from the mobile communication terminal of other regional A, and pass to its mobile communication switch MSC_C.Mobile communication switch MSC_C confirms its other resources distribution state, requires the mobile communication switch MSC_P that is responsible for mobile forefoot area to connect to portable terminal MT expansion.
So, the connection that current region mobile communication switch MSC_P expansion is original, expansion connects and switches to the mobile communication switch MSC_C that is responsible for the back moving area rapidly, and the transmission wireless data packet.
On the other hand, base station BS _ P is receiving after adjacent area B switches intention, and the notice that switch to portable terminal which zone sends to the mobile communication switch MSC_P that is responsible for oneself.In addition, this mobile communication switch MSC_P notifies the mobile communication switch on the original path again, and is delivered to the mobile communication switch MSC of final execution COS effect.
Then, the mobile communication switch MSC that carries out COS effect finds terminal MT and arrives optimal path with the mobile communication switch (MSC_C) of moving area (service area " B ") and execution route heavy-route.
After mobile communication switch MSC_C receives the information that new connection reset, remove with having expanded and is connected and the path between the previous mobile communication switch MSC_P of the switching of transmits data packets just, reset connection and use by new optimal path.
Fig. 3 is that mobile communication system of the present invention data packet communication path when switching is provided with flow chart.When the mobile communication terminal MT that is in arbitrary region will switch to another service area, terminal is to the base station BS _ P that is responsible for present service area and be responsible for the handoff request (HO_Request) with the target area base station BS _ C of migration of another service area, and the base station passes to separately mobile communication switch MSC_P, MSC_C to the handoff request fact.
Base station BS _ the C with the zone of migration that receives switching signal transmits virtual connection signalization (VC_Setup) to its mobile communication switch MSC_C, the mobile communication switch MSC_C of the target area of migration is confirmed its other resources distribution state, the mobile communication switch MSC_P requirement of the moving area before being responsible for switching makes it to expand connection (Exten_Setup) to portable terminal MT.Previous mobile communication switch MSC_P responds this requirement, expand original connection (Exten_Connect), require the mobile communication switch MSC_C heavy-route (Rerout_Request) of COS to the subject area that will move, carrying out connection expansion switching (HO_Exec) before, carry out the required preparation of heavy-route.
Then, after executing connection expansion switching (HO_Exec), disconnect the step of connecting (Radio_Release, Radio_Release_Ack) with terminal MT and previous base station BS _ P, terminal MT realizes being connected (HO_Complete) with base station BS _ C of new region.
As mentioned above, after the switching that has realized between terminal MT and the new region base station BS _ C, carry out carrying out between previous base station BS _ P and switch MSC_P the step (Release, Release_Ack) of break path, simultaneously, that is intended to heavy-route between switch MSC_2, the MSC_C of COS and new region is provided with step (Setup), realizes heavy-route (Connect_Switching).
After above-mentioned heavy-route realizes, maintenance is connected and does not interrupt (Exten_Release) between new base station exchange machine MSC_C and the previous base station exchange machine MSC_P, after from previous base station exchange machine MSC_P the path being provided with required resource and passing to COS, remove the path with previous mobile communication switch MSC_P fully, reset with new optimal path and connect and use.
As mentioned above, the present invention makes portable terminal simultaneously send switching signal to previous base station BS _ P and target BS BS_C that will migration, the mobile communication switch MSC_C of the target BS of migration is carried out expansion, be connected with previous mobile communication switch MSC_P, path by expansion is switched portable terminal rapidly, previous base station BS _ P circulates a notice of to COS, enforcement is to the optimal path heavy-route of switching subject area, after the switching of having carried out portable terminal, COS resets the optimal path to mobile communication switch MSC_C, improve the Internet resources service efficiency, prevent the circulating phenomenon that causes because of the path expansion.
Claims (4)
1. the data packet communication path setting method a when mobile communication system is switched is characterized in that comprising:
1) mobile communication terminal that will carry out switching is simultaneously to current base station (BS_P) and target BS (BS_C) transmission switching signal that will migration;
The mobile communication switch (MSC_C) of target BS that 2) will migration is carried out being connected of expansion and previous mobile communication switch (MSC_P), by the path of expansion, makes portable terminal carry out switching;
3) described current base station (BS_P) is to the COS circular, so that realize that described COS resets to the described optimal path of wanting the mobile communication switch (MSC_C) of the target BS of migration to the optimal path heavy-route of switching subject area;
4) reset by described, after new connection is reset, the described mobile communication switch (MSC_C) of wanting the target BS of migration is removed with the path of described previous mobile communication switch (MSC_P) and is connected, and resets connection by new optimal path.
2. the data packet communication path setting method when mobile communication system according to claim 1 is switched, it is characterized in that: in described connection spread step, receive switching signal will the migration zone base station (BS_C) transmit virtual connection signalization to described mobile communication switch (MSC_C), described mobile communication switch (MSC_C) requires previous mobile communication switch (MSC_P) to connect to termination extension, described previous mobile communication switch (MSC_P) extends to mobile communication switch (MSC_C) with the zone of migration to connection, carries out and switches.
3. the data packet communication path setting method when mobile communication system according to claim 1 and 2 is switched, it is characterized in that: in described heavy-route step, receive the current base station (BS_P) of switching intention and the information that switches to which zone about portable terminal is passed to the mobile communication switch of carrying out final COS effect by self mobile communication switch (MSC_P), the mobile communication switch of the final COS effect of described execution finds terminal and with the optimal path between the mobile communication switch (MSC_C) in the zone of migration, execution route heavy-route.
4. the data packet communication path setting method when mobile communication system according to claim 1 and 2 is switched, it is characterized in that: in described heavy-route step, carry out to connect before expansion switches, described previous mobile communication switch (MSC_P) requires described COS to carry out heavy-route to the mobile communication switch (MSC_C) with the zone of migration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030068783A KR100556896B1 (en) | 2003-10-02 | 2003-10-02 | Packet link setting method at the time of handoff for mobile communication system |
| KR1020030068783 | 2003-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1604682A true CN1604682A (en) | 2005-04-06 |
| CN100544512C CN100544512C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410074084XA Expired - Fee Related CN100544512C (en) | 2003-10-02 | 2004-09-03 | Data packet communication path setting method when mobile communication system is switched |
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| KR (1) | KR100556896B1 (en) |
| CN (1) | CN100544512C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008028426A1 (en) * | 2006-09-05 | 2008-03-13 | Huawei Technologies Co., Ltd. | The method, system and mobile switch center for load transferring in the pool area |
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
-
2003
- 2003-10-02 KR KR1020030068783A patent/KR100556896B1/en not_active IP Right Cessation
-
2004
- 2004-09-03 CN CNB200410074084XA patent/CN100544512C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008028426A1 (en) * | 2006-09-05 | 2008-03-13 | Huawei Technologies Co., Ltd. | The method, system and mobile switch center for load transferring in the pool area |
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100544512C (en) | 2009-09-23 |
| KR100556896B1 (en) | 2006-03-10 |
| KR20050032812A (en) | 2005-04-08 |
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| ASS | Succession or assignment of patent right |
Owner name: LANGCHAO LEJIN DIGITAL MOBILE COMMUNICATION CO., L Free format text: FORMER OWNER: LG ELECTRONICS (CHINA) R + D CENTER CO., LTD. Effective date: 20120322 |
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Free format text: CORRECT: ADDRESS; FROM: 100102 CHAOYANG, BEIJING TO: 264001 YANTAI, SHANDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120322 Address after: 264001 No. 228 Changjiang Road, Yantai economic and Technological Development Zone, Shandong, China Patentee after: Langchao Lejin Digital Mobile Communication Co., Ltd. Address before: Two Beijing 100102 Chaoyang District city in Wangjing Lize Park No. 203 Petrova building block B Patentee before: LG Electronic (China) Research and Development Center Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20120903 |