CN1863390A - Method for implementing neighborhood tactics of soft switching - Google Patents
Method for implementing neighborhood tactics of soft switching Download PDFInfo
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- CN1863390A CN1863390A CNA2005101352969A CN200510135296A CN1863390A CN 1863390 A CN1863390 A CN 1863390A CN A2005101352969 A CNA2005101352969 A CN A2005101352969A CN 200510135296 A CN200510135296 A CN 200510135296A CN 1863390 A CN1863390 A CN 1863390A
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Abstract
This invention provides a realizing method for a software switch adjacent region strategy including an adjacent region strategy realizing software by the centralized control of RNC to reduce the break of UE and reduce down frequency degree and signaling flow of control orders by RNC.
Description
Technical field
The present invention relates to computer application field, relate in particular to a kind of implementation method of neighborhood tactics of soft handover.
Background technology
In WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) system, the increase of the jamming margin of spread spectrum transmission makes channeling become feasible, and not having the soft handover that interrupts is the core technology of WCDMA system.General main flow WCDMA system manufacturer all support with frequently switch (comprise soft handover, More Soft Handoff and with direct-cut operation frequently), alien frequencies switches and (comprise between the 2G-3G system and switching) algorithm is switched in different system, the difference of these several switchings is handover trigger opportunity, switching mode is selected and the handoff parameter configuration.
The same frequency soft handover of WCDMA system adopts the mechanism of measuring control and measurement report, and as shown in Figure 1, this mainly comprises following four elements with the neighborhood tactics in the frequency Soft Handover Algorithm:
1, algorithm is accepted or rejected in the adjacent area of the equipping rules of the neighboring BS information of sub-district and RNC (Radio Network Controller, radio network controller);
2, the sub-district trigger condition of same-frequency measure reporting;
3, RNC is to the processing of the measurement report of UE (User Equipment, subscriber equipment);
4, measure the opportunity that neighboring BS information is upgraded in control.
The same frequency soft handover of WCDMA system is based on the neighborhood tactics of RNC and the common control of UE in the prior art.This neighborhood tactics mainly comprise following some:
1, algorithm is chosen in the adjacent area of the equipping rules of the neighboring BS information of sub-district and RNC.
The neighboring BS information of sub-district is the significant data of required configuration of Virtual network operator and optimization always, can not surpass 32 because RNC is handed down to the co-frequency cell number of carrying in the homogeneous-frequency adjacent-domain tabulation in the measurement control of UE, accept or reject algorithm process through the adjacent area according to the neighboring BS information of each sub-district in the Active Set and obtain so the homogeneous-frequency adjacent-domain tabulation is RNC.
According to the difference of the neighborhood tactics of Soft Handover Algorithm, the equipping rules of the neighboring BS information of sub-district and the adjacent area of RNC are chosen algorithm and also are not quite similar.The adjacent area is accepted or rejected algorithm and is accepted or rejected in the scope of adjacent area, Active Set sub-district union usually, is preferably principle with the common factor of Active Set sub-district.
2, same-frequency measure reporting the sub-district trigger condition.
The common frequency measurement cell Triggering condition 2 (trigger condition 2) that measures control is configured to monitored set cells (monitoring the collection sub-district), allows to monitor that the collection sub-district reports the 1A incident.
3, RNC is to the processing of measurement report.
Only allow to monitor that the collection sub-district adds Active Set.
4, the measurement control of renewal adjacent area issues opportunity.
When each neighboring BS information changes, need sending measuring control to carry out adjacent-area list renewing, make the UE neighboring BS information that can upgrade in time
Above-mentioned shortcoming based on RNC and the common neighborhood tactics of controlling of UE is:
1, because RNC can not surpass 32 to the neighboring BS information of UE configuration, is principle to give up the minimum probability sub-district, do not get rid of that UE moves in the sub-district of being given up and the possibility that produces call drop though algorithm is accepted or rejected in the adjacent area.
2, the renewal of Neighboring Cell List has brought certain additional signaling flow.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of implementation method of neighborhood tactics of soft handover, thereby can reduce the call drop phenomenon of UE, reduce RNC be handed down to UE measurement control order issue frequency and signaling traffic.
The objective of the invention is to be achieved through the following technical solutions:
A kind of implementation method of neighborhood tactics of soft handover comprises:
Carry out the neighborhood tactics that centralized control realizes soft handover by radio network controller (RNC).
Described method specifically comprises:
According to geographic position, each sub-district neighbouring relations, the radio resource of RNC control RRC is configured the homogeneous-frequency adjacent-domain information of each sub-district, and this neighbor cell configuration information is kept among the RNC.
Described method specifically comprises:
When each sub-district is adjacent or each sub-district is adjacent and when belonging to same operator, the RRC of RNC is configured the homogeneous-frequency adjacent-domain information of each sub-district, and this neighbor cell configuration information is kept among the RNC.
Described method specifically comprises:
Send in the measurement control message of subscriber equipment at RNC, appointment is configured to the cell trigger condition 2triggering condition2 of the sub-district trigger condition of the 1A incident of subscriber equipment the detected set sub-district and monitors collection sub-district Detected set cells and monitored set cells.
Described method specifically comprises:
The scrambling code information of the sub-district of carrying in A1, the RNC same-frequency measure reporting according to the sub-district of user equipment to report is utilized described neighbor cell configuration information of preserving in RNC, at the inner adjacent area searching algorithm of being scheduled to of carrying out of RNC;
A2, according to described adjacent area searching algorithm search cell in the union scope of the adjacent area of the adjacent area of Active Set sub-district, when the characteristic information that finds certain sub-district and this sub-district is unique, then this sub-district is joined the Active Set of Active Set sub-district, and in RNC, the cell information that searches is preserved.
The same-frequency measure reporting of described steps A 1 described sub-district comprises detected set or inspects the same-frequency measure reporting of collection sub-district.
Described method specifically comprises:
When the neighboring BS information of sub-district changed, the RRC of RNC was configured again and preserves the neighboring BS information of each sub-district, and the described neighboring BS information that reconfigures is not handed down to subscriber equipment.
Described method is applicable to the same frequency soft handover of Wideband Code Division Multiple Access (WCDMA) WCDMA system.
As seen from the above technical solution provided by the invention, the present invention compares with prior art by neighborhood tactics is carried out centralized control based on RNC, has following advantage:
1, because the centralized control strategy, the storage and the use of neighboring BS information are finished in RNC, do not exist the homogeneous-frequency adjacent-domain number to be no more than 32 restriction, eliminated the call drop possibility that the choice because of the adjacent area causes.
2, because the centralized control strategy, the storage and the use of neighboring BS information are finished in RNC, can reduce because of the homogeneous-frequency adjacent-domain in the Operation and Maintenance platform leaks the expansion of the hunting zone of sub-district and join the call drop probability that causes.
3, reduced the signaling traffic that frequent sending measuring control brings to UE because upgrade the adjacent area.
Description of drawings
Fig. 1 is the measurement control of same frequency soft handover of WCDMA system and the mechanism principle figure of measurement report.
Embodiment
The invention provides a kind of implementation method of neighborhood tactics of soft handover, core of the present invention is: the neighborhood tactics of the same frequency soft handover of WCDMA system is carried out centralized control based on RNC.
At four staples of the neighborhood tactics in the same frequency Soft Handover Algorithm of above-mentioned WCDMA system, of the present inventionly carry out central controlled neighborhood tactics based on RNC and carry out following processing respectively:
1, algorithm is accepted or rejected in the adjacent area of the equipping rules of the neighboring BS information of sub-district and RNC.
According to geographic position, each sub-district neighbouring relations, such as, when each sub-district is adjacent or each sub-district is adjacent and when belonging to same operator, the RRC of RNC (Radio ResourcesControl, radio resource control) the homogeneous-frequency adjacent-domain information to each sub-district is configured, and configuration information is kept among the RNC.
In measurement that RNC issues to UE control, do not need to issue the information of the homogeneous-frequency adjacent-domain of configuration, so not needing in the central controlled neighborhood tactics to carry out the adjacent area to accept or reject algorithm based on RNC of the present invention.
2, the sub-district trigger condition of same-frequency measure reporting.
Send in the measurement control message of subscriber equipment at RNC, appointment is configured to Detected set cells and monitored setcells (detected set sub-district and supervision collection sub-district) with the cell triggering condition2 of the sub-district trigger condition of 1A incident.Promptly specify detected set and inspect the collection sub-district can trigger the 1A incident.
The 1A incident is that relative threshold increases incident, and the quality of a sub-district of expression is near best cell or active set quality.If measure in the control and disposed the 1A incident, UE is according to the relevant parameter of measuring configuration in the control, to satisfying the sub-district reporting measurement reports of trigger condition.
3, RNC is to the processing of measurement report.
Detected set that RNC reports according to UE or the scrambling code information of inspecting the sub-district of carrying in the same-frequency measure reporting of collection sub-district, the neighboring BS information that utilization is preserved in the RNC side, at the inner adjacent area searching algorithm of being scheduled to of carrying out of RNC, according to this adjacent area searching algorithm search cell in the union scope of the adjacent area of the adjacent area of Active Set sub-district.If can find certain sub-district, and the characteristic information of this sub-district is unique, then this sub-district is joined the Active Set of Active Set sub-district.And the cell information that searches is preserved in the RNC side.
The searching method of the adjacent area of above-mentioned sub-district makes that the scope of searching for can be enlarged owing to be to carry out in the RNC side, thereby reduction is joined the call drop probability that causes and reduced the call drop possibility that causes because of neighboring BS information is accepted or rejected because of the adjacent area leakage.
4, the measurement control of renewal adjacent area issues opportunity.
Carry out in the central controlled neighborhood tactics based on RNC of the present invention, when the neighboring BS information of sub-district changes, the RRC of RNC is configured again and preserves the neighboring BS information of each sub-district, the described neighboring BS information that reconfigures is not handed down to subscriber equipment, does not promptly need to notify UE to upgrade neighboring BS information.
In the present invention, because RNC does not need to issue neighboring BS information to UE, control the signaling traffic that message brings thereby reduced owing to RNC issues the measurement of carrying neighboring BS information to UE.
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 (8)
1, a kind of implementation method of neighborhood tactics of soft handover is characterized in that, comprising:
Carry out the neighborhood tactics that centralized control realizes soft handover by radio network controller (RNC).
2, according to the implementation method of the neighborhood tactics of the described soft handover of claim 1, it is characterized in that described method specifically comprises:
According to geographic position, each sub-district neighbouring relations, the radio resource of RNC control RRC is configured the homogeneous-frequency adjacent-domain information of each sub-district, and this neighbor cell configuration information is kept among the RNC.
3, according to the implementation method of the neighborhood tactics of the described soft handover of claim 2, it is characterized in that described method specifically comprises:
When each sub-district is adjacent or each sub-district is adjacent and when belonging to same operator, the RRC of RNC is configured the homogeneous-frequency adjacent-domain information of each sub-district, and this neighbor cell configuration information is kept among the RNC.
4, according to the implementation method of the neighborhood tactics of the described soft handover of claim 1, it is characterized in that described method specifically comprises:
Send in the measurement control message of subscriber equipment at RNC, appointment is configured to the cell trigger condition 2triggering condition2 of the sub-district trigger condition of the 1A incident of subscriber equipment the detected set sub-district and monitors collection, sub-district Detected set cells and monitored set cells.
5, according to the implementation method of the neighborhood tactics of claim 2 or 3 described soft handovers, it is characterized in that described method specifically comprises:
The scrambling code information of the sub-district of carrying in A1, the RNC same-frequency measure reporting according to the sub-district of user equipment to report is utilized described neighbor cell configuration information of preserving in RNC, at the inner adjacent area searching algorithm of being scheduled to of carrying out of RNC;
A2, according to described adjacent area searching algorithm search cell in the union scope of the adjacent area of the adjacent area of Active Set sub-district, when the characteristic information that finds certain sub-district and this sub-district is unique, then this sub-district is joined the Active Set of Active Set sub-district, and in RNC, the cell information that searches is preserved.
According to the implementation method of the neighborhood tactics of the described soft handover of claim 5, it is characterized in that 6, the same-frequency measure reporting of described steps A 1 described sub-district comprises detected set or inspects the same-frequency measure reporting of collection sub-district.
7, according to the implementation method of the neighborhood tactics of the described soft handover of claim 5, it is characterized in that described method specifically comprises:
When the neighboring BS information of sub-district changed, the RRC of RNC was configured again and preserves the neighboring BS information of each sub-district, and the described neighboring BS information that reconfigures is not handed down to subscriber equipment.
8, according to the implementation method of the neighborhood tactics of the described soft handover of claim 1, it is characterized in that described method is applicable to the same frequency soft handover of Wideband Code Division Multiple Access (WCDMA) WCDMA system.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2005101352969A CN1863390A (en) | 2005-12-29 | 2005-12-29 | Method for implementing neighborhood tactics of soft switching |
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| CNA2005101352969A CN1863390A (en) | 2005-12-29 | 2005-12-29 | Method for implementing neighborhood tactics of soft switching |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267642B (en) * | 2007-03-12 | 2012-08-08 | 华为技术有限公司 | A sending method, processing device and system for adjacent cell information |
| CN104363623A (en) * | 2014-11-19 | 2015-02-18 | 中国联合网络通信集团有限公司 | Neighbor cell adding method and device and base station |
| WO2018036196A1 (en) * | 2016-08-24 | 2018-03-01 | 华为技术有限公司 | Data processing method and radio network controller |
-
2005
- 2005-12-29 CN CNA2005101352969A patent/CN1863390A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267642B (en) * | 2007-03-12 | 2012-08-08 | 华为技术有限公司 | A sending method, processing device and system for adjacent cell information |
| CN104363623A (en) * | 2014-11-19 | 2015-02-18 | 中国联合网络通信集团有限公司 | Neighbor cell adding method and device and base station |
| WO2018036196A1 (en) * | 2016-08-24 | 2018-03-01 | 华为技术有限公司 | Data processing method and radio network controller |
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Open date: 20061115 |