CN1787685A - Method for realizing hard switching - Google Patents
Method for realizing hard switching Download PDFInfo
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- CN1787685A CN1787685A CN 200410098540 CN200410098540A CN1787685A CN 1787685 A CN1787685 A CN 1787685A CN 200410098540 CN200410098540 CN 200410098540 CN 200410098540 A CN200410098540 A CN 200410098540A CN 1787685 A CN1787685 A CN 1787685A
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Abstract
This invention discloses a method for realizing hard switch including: a network side informs a mobile station to carry out hard switch and a radio network controller sends a request information for setting up radio link to the base station, which configures the system resources to finish the hard switch of the mobile station among different local areas of a same base station, in which, in the request information of RNC sent to the base station, there is a communication context labeling the user identity and RNC sets a corresponding relation between the communication context and the former radio link communication, which supports the base station to configure radio link parameters based on the request information to realize hard switch of the mobile station among different local areas of a same base station.
Description
Technical field
The present invention relates to the changing method in the mobile communication, refer to a kind of implementation method of direct-cut operation especially.
Background technology
Hard-switching technology is one of important content of mobile communication system RRM, is the important step that guarantees communication quality.Direct-cut operation is that communication is from transferring to the process of another Radio Link when previous Radio Link.Scope difference according to the direct-cut operation generation, travelling carriage (MS) direct-cut operation that communication network is handled has following several types: travelling carriage at the minizone of same base direct-cut operation, travelling carriage at the minizone of different base station direct-cut operation, travelling carriage at the direct-cut operation between radio network controller (RNC), the direct-cut operation of travelling carriage between mobile switching centre (MSC), and travelling carriage is at internetwork direct-cut operation.
In the prior art, for the direct-cut operation of MS between the same base different districts, RNC sends wireless link increasing request message to the base station, triggers the base station and carries out Radio Link increase process.Wherein, the minizone direct-cut operation of above-mentioned same base is meant: travelling carriage is realized direct-cut operation between the different districts of same base station administration or different sector.At this moment, the communication between MS and the network side is transferred to new Radio Link from old Radio Link, but new and old two wireless links before and after the direct-cut operation all keep and being connected of same base station.Among the application, old Radio Link is called Radio Link formerly, new Radio Link is called newly-increased Radio Link.
In the prior art, realize the method for hard switching of travelling carriage between the same base different districts, specifically may further comprise the steps as shown in Figure 1:
Step 101: network side notice travelling carriage carries out direct-cut operation.
It is as follows that network side notice travelling carriage carries out the concrete operations of direct-cut operation: travelling carriage reports information such as field intensity about the travelling carriage receiving and transmitting signal, interference to network side; Network side is according to travelling carriage information that reports and the threshold value assessment sub-district, the current place of travelling carriage that self is provided with, and the signal quality of this sub-district neighbor cell; If the signal quality of sub-district, the current place of travelling carriage is lower than the threshold value that network side is provided with, and the signal quality of sub-district, the current place of travelling carriage neighbor cell is higher than the threshold value that network side is provided with, then network side notice travelling carriage starts the direct-cut operation operation, switches to the neighbor cell of current area from current area.Set the sub-district at the current place of travelling carriage herein, and the sub-district adjacent with this sub-district be in the compass of competency of same base station, described in this application direct-cut operation all is meant the direct-cut operation between the different districts that occurs in same base.Among the application, travelling carriage is switched preceding sub-district be called sub-district formerly, the sub-district after travelling carriage is switched is called in the sub-district, back.
Step 102:RNC sends wireless link increasing request message to the base station under the described travelling carriage of step 101.Wherein, RNC in wireless link increasing request message, be provided with one with communication context that formerly Radio Link is identical.
In the prior art, RNC knows that the sub-district at place, travelling carriage switching front and back belongs to same base station, just sends wireless link increasing request message to the base station.For wireless link increasing request message, agreement regulation, this message are used the travelling carriage communication context of Radio Link formerly.Owing to the communication context is the sign that system is used for discerning the affiliated user of Radio Link, so the base station, can be judged newly-increased Radio Link and the same user of mobile station of Radio Link correspondence formerly according to the communication context that carries in the wireless link increasing request message that receives.
Step 103: the base station receives the wireless link increasing request message that RNC sends, according to the parameter configuring system resource of carrying in this message.Such as, the base station is according to the air interface links between wireless link information configurating base station that carries in the message and the travelling carriage.Again such as, the base station is provided with the power of inner-loop power control according to the power parameter that carries in the message.
Step 104: travelling carriage is finished direct-cut operation, sets up new Radio Link with network side and is connected, and disconnect travelling carriage and being connected of Radio Link formerly.
Realize that by said process there is following shortcoming in travelling carriage at the minizone of same base direct-cut operation:
At first, for service transmission rate condition with higher on the Radio Link formerly, newly-increased Radio Link is if set up, and can only keep and the identical service transmission rate of Radio Link formerly.At this moment, if heavy in the load of sub-district, back, this sub-district does not just have the high speed business of enough newly-increased Radio Links of resource burden, and then RNC will inform the failure of travelling carriage direct-cut operation, that is: travelling carriage can only use the Radio Link formerly that communication quality worsens.So, along with the further deterioration of Radio Link communication quality formerly, user of mobile station will face the danger of call drop.
From top analysis as can be seen, the direct-cut operation that Radio Link increase process realizes may cause the direct-cut operation failure owing to can't change transmission rate professional on the communication link, finally causes conversation loss.
Secondly, for increasing process with Radio Link frequently, if formerly Radio Link is set to the compact model of state of activation, and newly-increased Radio Link is set to the compact model of deactivation status, promptly newly-increased Radio Link closes compression pattern, according to agreement, the base station will inform that the RNC Radio Link increases failure, this means the direct-cut operation failure of travelling carriage.
As seen, the direct-cut operation of Radio Link increase process realization can't be closed the compact model of Radio Link flexibly.For for the same frequency direct-cut operation of timing reconstruction mode work, the compact model that can't close Radio Link flexibly will bring great inconvenience to whole handoff procedure.
Once more, for increasing process with frequently Radio Link, newly-increased Radio Link can only use and the identical uplink scrambling code of Radio Link formerly.The base station is after receiving the wireless link increasing request message that RNC sends, adopt and separate package operation with the packet that the uplink scrambling code that formerly Radio Link is identical is sent travelling carriage, then the base station thinks that according to unpacking the result increasing Radio Link newly has realized that packet is synchronous, so report the synchronous indication of newly-increased Radio Link to give RNC.RNC receives this indication, thinks that direct-cut operation finishes, so RNC deletes Radio Link formerly.At this moment, because the base station is adopted and is separated package operation with the uplink scrambling code that formerly Radio Link is identical, so the base station will draw the newly-increased synchronous conclusion of Radio Link in a short period of time, newly-increased in fact Radio Link is not finished simultaneous operation as yet, and being actually synchronously that the base station reports is synchronously false.At this moment, though the user has switched on the newly-increased Radio Link, the link-quality of newly-increased Radio Link does not reach the conversation demand as yet, so the user also can face the danger of call drop.
At last, in Radio Link increase process, the power parameter of base station inner-loop power control is soaring, thereby the transmitting power before causing transmitting power in the travelling carriage direct-cut operation than travelling carriage direct-cut operation improves.So the direct-cut operation that adopts Radio Link increase process to realize can bring uplink interference to whole system, influences systematic function.
From foregoing as seen, prior art adopts Radio Link increase process to realize that there is inconvenience in travelling carriage at the minizone of same base direct-cut operation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of implementation method of direct-cut operation, guarantees that travelling carriage can be provided with the parameter of Radio Link flexibly when realizing direct-cut operation between the same base different districts, and improves the stability of direct-cut operation.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of implementation method of direct-cut operation, network side is characterized in that this method may further comprise the steps after determining to carry out direct-cut operation between the same base different districts according to the reporting information of travelling carriage and the threshold value self set:
A. network side notice travelling carriage carries out direct-cut operation, and radio network controller transmission Radio Link is set up request message to base station under the travelling carriage that carries out direct-cut operation;
B. the Radio Link sent according to radio network controller of base station is set up the system configuration information allocating system resource in the request message, finishes the direct-cut operation of travelling carriage between the same base different districts.
Preferably, the system configuration information in the described Radio Link foundation of the step b request comprises: the communication context of sign travelling carriage identity.
Further, step b comprises: radio network controller the Radio Link that sends to the base station set up be provided with in the request message one with switch before the corresponding communication context of Radio Link communication context.
Preferably, the described communication context corresponding with switching preceding Radio Link communication context is: meet negate relation and the identical communication context of all the other bits with at least one corresponding bit position of Radio Link communication context before the switching.
Preferably, the system configuration information that described Radio Link is set up in the request message further comprises: uplink special physical channel information, downward special physical channel information, transmitting channel information, wireless link information, and compact model information.
As seen from the above technical solutions, the implementation method of this direct-cut operation of the present invention is in direct-cut operation, RNC sends Radio Link to the base station and sets up request message and trigger direct-cut operation between the different districts of same base station, owing to carry/downward special physical channel information and radio link configuration information such as transmitting channel information, Radio Link compact model information and uplink scrambling code information in this request message, so method of the present invention can allow RNC to change the service transmission rate of newly-increased Radio Link according to the loading condition in the sub-district, back; This method also allows RNC that the compact model of newly-increased Radio Link is set according to the needs of network side; Simultaneously, this method has overcome in the prior art base station and done sth. in advance synchronous shortcoming in direct-cut operation, and the direct-cut operation that adopts this method to realize can not bring the power ramp of inner-loop power control, thereby has improved the stability of system, guarantees the communication quality of system.In a word, this method has strengthened the travelling carriage flexibility ratio that parameter is provided with in direct-cut operation in the scope that agreement allows.
Description of drawings
Fig. 1 is the flow process that travelling carriage is realized direct-cut operation in the prior art;
Fig. 2 realizes the flow process of direct-cut operation for travelling carriage among the present invention.
Embodiment
Core concept of the present invention is: network side notice travelling carriage carries out direct-cut operation, and radio network controller sends Radio Link and sets up request message to the base station simultaneously; The Radio Link that send according to radio network controller the base station is set up the request message allocating system resource, finishes the direct-cut operation of travelling carriage between the different districts of same base.
Wherein, RNC sends to the Radio Link of base station and sets up the communication context that carries the identifying user identity in the request message, and RNC is provided with this communication context and has corresponding relation with the communication context of Radio Link formerly.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Travelling carriage of the present invention realizes that in the minizone of same base the method for direct-cut operation may further comprise the steps:
Step 201: network side notice travelling carriage carries out direct-cut operation.
Said process is identical with step 101 shown in Figure 1, repeats no more herein.
Step 202:RNC sends Radio Link to the base station and sets up request message.Wherein, RNC Radio Link set up be provided with in the request message one with the corresponding new communication context of Radio Link formerly.
The agreement regulation: Radio Link is set up request message and is had fixing parameter format, and the communication context is exactly that Radio Link is set up one of parameter of request message.
In wireless communication system, the communication context is used for identifying mobile subscriber's identity.RNC is provided with the contextual method of communication shown in step 102 among Fig. 1 in the prior art: RNC in sending to the wireless link increasing request message of base station, be provided with one with the communication context that formerly Radio Link is identical, show before and after two wireless links belong to same mobile subscriber.
Among the present invention, RNC the Radio Link that sends to the base station set up be provided with in the request message one with communication context that formerly Radio Link is corresponding.The present invention's employing is provided with the contextual method of corresponding communication and is based on following consideration:
At first, for the base station, if RNC the Radio Link that sends to the base station set up be provided with in the request message one with communication context that formerly Radio Link is identical, because the communication interface standard between RNC and the base station is not supported to use same communication context to trigger the base station and is set up the request message configurating radio link parameter according to Radio Link, the base station can't be resolved this Radio Link and be set up request message, thereby can't finish the direct-cut operation of travelling carriage.Among the present invention, RNC the Radio Link that sends to the base station set up be provided with in the request message one with communication context that formerly Radio Link is corresponding, when request message is set up at this Radio Link of parsing in the base station, it is different with the communication context of Radio Link formerly to think that this Radio Link is set up the communication context that carries in the request message, so method to set up protocol compliant regulation of the present invention, the configuration of system resource can be finished smoothly according to the parameter that Radio Link is set up in the request message in the base station, thereby finishes the direct-cut operation of travelling carriage.
Secondly, for RNC, if RNC the Radio Link that sends to the base station set up be provided with in the request message one with the irrelevant communication context of Radio Link formerly, because RNC need manage the configuration of Radio Link before and after the direct-cut operation, grasp the corresponding relation of mobile subscriber and Radio Link, so to formerly and at the back Radio Link configuration management demand that incoherent communication context does not meet RNC being set.
From top analysis as can be seen, the contextual mode of corresponding communication that is provided with of the present invention has satisfied the communication interface standard between RNC and the base station on the one hand, and the assurance base station can be resolved the Radio Link of RNC transmission and be set up request message; RNC can know that from two contextual corresponding relations of communication two wireless links belong to same user on the other hand, guarantees the proper operation of system.
In preferred embodiment of the present invention, the contextual corresponding relation of communication is implemented as follows: system is provided with contextual some or certain the several bit of two communications and meets the negate relation, and all the other bits are identical.
Compare to the wireless link increasing request message that the base station sends with RNC in the step 102 shown in Figure 1, the Radio Link that sends in the step 202 is set up request message and is also comprised following parameter: on/downward special physical channel information, and transmitting channel information; Radio Link compact model information.Wherein, on/downward special physical channel information and transmitting channel information be used the service transmission rate that can change Radio Link, and comprise uplink scrambling code information in the described uplink special physical channel information.
RNC can change the service transmission rate of newly-increased Radio Link according to the loading condition in the sub-district, back when setting up request message to Radio Link above-mentioned parameter is set; Also can open or close the compact model of Radio Link according to the needs of network side; Can also be provided with and the different uplink scrambling code of Radio Link formerly, in direct-cut operation, do sth. in advance synchronous shortcoming in order to overcome the base station.
From top analysis as can be seen, the flexibility to the above-mentioned parameter setting that the present invention had is that prior art is not available.
In addition, set up in the request message at Radio Link, the power parameter of base station inner-loop power control can not rise, that is: the transmitting power the when transmitting power in the travelling carriage direct-cut operation is with the travelling carriage operate as normal is identical, so the direct-cut operation that adopts Radio Link to set up the realization of request message configurating radio link parameter can not bring uplink interference to whole system.
Step 203: the base station receives the Radio Link of RNC transmission and sets up request message, according to the parameter configuring system resource of carrying in the message.
Step 204: travelling carriage is finished direct-cut operation, sets up new Radio Link with network side and is connected, and disconnect travelling carriage and being connected of Radio Link formerly.
By the above embodiments as seen, the implementation method of this direct-cut operation of the present invention adopts the contextual mode of corresponding communication that is provided with, well support the base station to set up the request message configurating radio link parameter, realize the direct-cut operation of travelling carriage between the same base different districts according to Radio Link.Set up the request message configurating radio link parameter according to Radio Link and improved system, improve the stability of direct-cut operation simultaneously the flexibility ratio that radio link parameter is provided with.
Claims (5)
1, a kind of implementation method of direct-cut operation, network side is characterized in that this method may further comprise the steps after determining to carry out direct-cut operation between the same base different districts according to the reporting information of travelling carriage and the threshold value self set:
A. network side notice travelling carriage carries out direct-cut operation, and radio network controller transmission Radio Link is set up request message to base station under the travelling carriage that carries out direct-cut operation;
B. the Radio Link sent according to radio network controller of base station is set up the system configuration information allocating system resource in the request message, finishes the direct-cut operation of travelling carriage between the same base different districts.
2, method according to claim 1 is characterized in that, the system configuration information that the described Radio Link of step b is set up in the request comprises: the communication context of sign travelling carriage identity.
3, method according to claim 2 is characterized in that, step b further comprises: radio network controller the Radio Link that sends to the base station set up be provided with in the request message one with switch before the corresponding communication context of Radio Link communication context.
4, method according to claim 3, it is characterized in that the described communication context corresponding with switching preceding Radio Link communication context is: meet negate relation and the identical communication context of all the other bits with at least one corresponding bit position of Radio Link communication context before the switching.
5, according to each described method of claim 1 to 4, it is characterized in that, the system configuration information that described Radio Link is set up in the request message further comprises: uplink special physical channel information, downward special physical channel information, transmitting channel information, wireless link information, and compact model information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100985404A CN100382651C (en) | 2004-12-09 | 2004-12-09 | Method for realizing hard switching |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100985404A CN100382651C (en) | 2004-12-09 | 2004-12-09 | Method for realizing hard switching |
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| CN1787685A true CN1787685A (en) | 2006-06-14 |
| CN100382651C CN100382651C (en) | 2008-04-16 |
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| CNB2004100985404A Expired - Fee Related CN100382651C (en) | 2004-12-09 | 2004-12-09 | Method for realizing hard switching |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132614B (en) * | 2006-08-21 | 2010-12-01 | 华为技术有限公司 | Cell re-selection method, device and system |
| CN102405667A (en) * | 2009-04-20 | 2012-04-04 | 日本电气株式会社 | Communication system |
| CN101841872B (en) * | 2009-03-17 | 2013-01-30 | 电信科学技术研究院 | Method and relay equipment for implementing cell switch |
| WO2013053230A1 (en) * | 2011-10-12 | 2013-04-18 | 中兴通讯股份有限公司 | Method and ue for dynamic controlling inner-loop power |
| CN104902522A (en) * | 2006-10-03 | 2015-09-09 | 高通股份有限公司 | Handover to any cell of a target base station in a wireless communication system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100256957B1 (en) * | 1997-12-26 | 2000-05-15 | 윤종용 | Hard hand-off processing method and device |
| CN1157886C (en) * | 2001-07-20 | 2004-07-14 | 华为技术有限公司 | Consultative code resource-distributing method in CDMA system |
| CN1223122C (en) * | 2002-09-23 | 2005-10-12 | 华为技术有限公司 | Method of soft switching in WCDMA network |
| US7417968B2 (en) * | 2002-12-06 | 2008-08-26 | Motorola, Inc. | Method and apparatus for improving hard handoffs in CDMA systems |
| KR100560849B1 (en) * | 2003-05-14 | 2006-03-13 | 에스케이 텔레콤주식회사 | System and Method for Setting Handover Based on Quality of Service in WCDMA System |
-
2004
- 2004-12-09 CN CNB2004100985404A patent/CN100382651C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132614B (en) * | 2006-08-21 | 2010-12-01 | 华为技术有限公司 | Cell re-selection method, device and system |
| CN104902522A (en) * | 2006-10-03 | 2015-09-09 | 高通股份有限公司 | Handover to any cell of a target base station in a wireless communication system |
| CN104902522B (en) * | 2006-10-03 | 2018-10-19 | 高通股份有限公司 | The switching of the arbitrary cells of target BS is arrived in a wireless communication system |
| CN101841872B (en) * | 2009-03-17 | 2013-01-30 | 电信科学技术研究院 | Method and relay equipment for implementing cell switch |
| CN102405667A (en) * | 2009-04-20 | 2012-04-04 | 日本电气株式会社 | Communication system |
| US8923259B2 (en) | 2009-04-20 | 2014-12-30 | Nec Corporation | Communication system |
| CN102405667B (en) * | 2009-04-20 | 2016-08-03 | 日本电气株式会社 | Communication system |
| WO2013053230A1 (en) * | 2011-10-12 | 2013-04-18 | 中兴通讯股份有限公司 | Method and ue for dynamic controlling inner-loop power |
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| CN100382651C (en) | 2008-04-16 |
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