CN101364833A - Control method for load of WCDMA system - Google Patents
Control method for load of WCDMA system Download PDFInfo
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- CN101364833A CN101364833A CNA2007101429033A CN200710142903A CN101364833A CN 101364833 A CN101364833 A CN 101364833A CN A2007101429033 A CNA2007101429033 A CN A2007101429033A CN 200710142903 A CN200710142903 A CN 200710142903A CN 101364833 A CN101364833 A CN 101364833A
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Abstract
The invention discloses the load control method of a wideband code division multiple access system. The method is used in a communication network including an extended cell supporting an enhanced uplink dedicated channel and a traditional cell not supporting the enhanced uplink dedicated channel. When the uplink of the traditional cell is overloaded, a radio network controller (RNC) is used for reconfiguring wireless links of one or more user equipment using the enhanced uplink dedicated channel through an Iub port to adjust the maximal bit rate of the enhanced uplink dedicated channel. The RNC can achieve control of uplink rate of the UE through the reconfiguration flow of Node B through the Iub part to prevent air interface RRC layer signal exchange of the RNC and the UE, thereby greatly improving the control efficiency and greatly reducing the risk of call drop resulting from air interface RRC layer signal exchange of the RNC and the UE.
Description
Technical field
The present invention relates to a kind of control method of system loading, relate in particular to the control method of a kind of Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short WCDMA) system loading.
Background technology
The third generation mobile partner plans (3rd Generation partnership project, abbreviation 3GPP) in the agreement of its R6 version, introduced enhancing special uplink channel (Enhanced DedicatedChannel, be called for short E-DCH), be used to improve uplink speed.This channel is supported uplink macro diversity.In order to support with the mixed networking of R6 version conventional cell before and to dedicated channel (DedicatedChannel, abbreviation DCH) grand diversity, agreement regulation subscriber equipment (the User equipment of R6 version, abbreviation UE) DCH Active Set can be different with the E-DCH Active Set, as shown in Figure 1, support the sub-district (being Extended Cell) of E-DCH channel to support the DCH channel simultaneously, that is to say that UE can also comprise the sub-district (conventional cell) of only supporting the DCH channel in the Active Set when using the E-DCH channel to carry out high speed data transfer.Because also in the Active Set of UE, obviously UE can cause huge interference to these conventional cell to conventional cell when using the E-DCH channel transmission data, the load of these conventional cell is increased.
Chinese patent specification 200710005501.9 proposes to control by control UE side transmitted data rates the method for cell load; Also have some producers to propose to limit the interference that the E-DCH channel causes by the maximum transmission power of control UE, thus the load of control sub-district.All there is an obvious defects in these methods, promptly, need radio network controller (Radio Network Controller, be called for short RNC) and RRC (Radio Resource Control Radio Resource control) layer Signalling exchange of UE through eating dishes without rice or wine, efficient is lower and cause call drop easily.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of RNC and UE rrc layer Signalling exchange of eating dishes without rice or wine that do not need just can realize controlling the control method of a kind of load of WCDMA system of cell load.
For solving the problems of the technologies described above, the invention provides a kind of control method of load of WCDMA system, this method is applied to comprise adjacent support and strengthens the Extended Cell of special uplink channel and do not support to strengthen in the communication network of conventional cell of special uplink channel, when the up excess load of conventional cell, radio network controller carries out reprovision by the Iub mouth to the Radio Link that one or more uses strengthen the subscriber equipment of special uplink channel, adjusts the Maximum Bit Rate that it strengthens special uplink channel.
Further, comprise conventional cell and Extended Cell in the Active Set of above-mentioned subscriber equipment.
Further, this method comprises the steps:
A: the public-measurement report that the Node B of radio network controller reception conventional cell is uploaded;
B: if judge that according to above-mentioned public-measurement report the uplink load of described conventional cell is higher than the overload threshold of setting, then radio network controller carries out reprovision by the Iub mouth to the Radio Link of one or more described subscriber equipmenies, reduces the Maximum Bit Rate that it strengthens special uplink channel.
Further, also comprise step c after step a: if report judges that the uplink load of conventional cell is lower than the overload recovery thresholding of setting according to public-measurement, then radio network controller recovers the original Maximum Bit Rate value through the enhancing special uplink channel of step b reprovision.
Further, the operation of in step b the Radio Link of subscriber equipment being carried out reprovision comprises following substep:
B1: radio network controller sends wireless link reconfigured request by the Iub mouth to the Node B of Extended Cell, comprises the bit rate higher limit in this request;
B2: above-mentioned Node B is dispatched the pairing enhancing special uplink channel of above-mentioned wireless link reconfigured request, makes its bit rate not be higher than above-mentioned bit rate higher limit;
Wherein, the bit rate higher limit is less than the corresponding original Maximum Bit Rate value that strengthens special uplink channel.
Further, in step c, the operation that the Radio Link of subscriber equipment is recovered comprises following substep:
C1: radio network controller sends wireless link reconfigured request by the Iub mouth to the Node B of Extended Cell, comprises original Maximum Bit Rate value in this request;
C2: above-mentioned Node B is dispatched the pairing enhancing special uplink channel of above-mentioned wireless link reconfigured request, makes its bit rate not be higher than above-mentioned original Maximum Bit Rate value.
Further, after step b, c, also comprise following steps:
D: if judge that according to public-measurement report the overload that the uplink load of conventional cell is lower than the overload threshold of setting and is higher than setting recovers thresholding, then this method finishes;
E: jump to step a.
Further, Node B sends wireless link reconfigured response to radio network controller after receiving wireless link reconfigured request.
As from the foregoing, the present invention adopts RNC to pass through the Iub mouth reprovision flow process of Node B (Node B) is realized control to the UE upstream rate, avoided the rrc layer Signalling exchange of eating dishes without rice or wine of RNC and UE, thereby improved control efficiency greatly, and greatly reduced the risk of dropped calls that the rrc layer Signalling exchange causes of eating dishes without rice or wine owing to RNC and UE.
Description of drawings
Fig. 1 is for comprising the sub-district of supporting the E-DCH channel and the scene schematic diagram of not supporting the sub-district of E-DCH channel in the UE Active Set;
Fig. 2 is the load control flow chart of the control method of a kind of load of WCDMA system of the present invention;
Fig. 3 carries out the flow chart of reprovision to Node B by the Iub mouth for the RNC of the control method of a kind of load of WCDMA system of the present invention.
Embodiment
For the UE that comprises DCH Active Set and E-DCH Active Set simultaneously, when overload appears in the conventional cell of not supporting the E-DCH channel, the Maximum Bit Rate of the E-DCH channel of RNC by reducing this UE reduces its upstream data rate, the reduction of speed also just means the minimizing of uplink interference, thereby reaches the purpose of the load that reduces the conventional cell of not supporting the E-DCH channel in this UE Active Set.
For the Maximum Bit Rate that reduces the E-DCH channel, can realize by the reprovision flow process of Iub mouth (being the configuration interface between Node B and the RNC), be about to Node B can distribute to UE in scheduling UE process a resource shrinkage, such as, can reduce the transmission bandwidth of channel, reach the purpose of control UE upstream rate by the bottom E-DCH scheduling mechanism of Node B.
Below be example with the mixed networking of the sub-district of R6 version sub-district and R99 version, the invention will be further described, wherein the E-DCH channel is supported in the sub-district of R6 version, the E-DCH channel is not supported in the sub-district of R99 version.
As shown in Figure 2, the control method of a kind of load of WCDMA system of the present invention comprises the steps:
Step 101, RNC obtains the overload threshold and the overload of R99 sub-district and recovers thresholding, and the public-measurement that the Node B of reception R99 sub-district uploads is reported.
Above-mentioned overload threshold and overload are recovered thresholding and can be configured by the backstage.
Step 102, RNC judges according to the above-mentioned public-measurement report that receives whether the uplink load of R99 sub-district has surpassed overload threshold, if surpass, then execution in step 103, otherwise execution in step 104.
Step 103, RNC is to comprising this R99 sub-district and R6 sub-district and using Radio Link (the Radio Link of the UE (reprovision UE treated in abbreviation) of E-DCH channel in one or more Active Sets, be called for short RL) carry out reprovision by the Iub mouth, reduce the Maximum Bit Rate of its E-DCH channel, disturb thereby reach the R99 cell uplink that reduces overload, reduce the purpose of R99 cell-overload; Jump to step 101 then.
Wherein, as shown in Figure 3, above-mentionedly the flow process that the Radio Link of respectively treating reprovision UE carries out reprovision is comprised following substep by the Iub mouth:
(A) RNC sends wireless link reconfigured request by the Iub mouth to the Node of R6 sub-district B, comprises the bit rate higher limit in this request;
(B) the Node B of this R6 sub-district dispatches the E-DCH channel of corresponding UE according to the wireless link reconfigured request that receives, and makes its Maximum Bit Rate not be higher than above-mentioned bit rate higher limit; And send wireless link reconfigured response to RNC.
Can carry out reprovision to the UE of all the use E-DCH channels in the R6 sub-district according to above-mentioned steps (A), (B), promptly the E-DCH channel to each UE repeats above-mentioned steps (A), (B); Also can carry out according to the priority of UE in batches.
The UE that carries out behind the reprovision through above-mentioned steps (A), (B) is called reduction of speed UE.
Step 104, RNC judges further whether the uplink load of the R99 sub-district of overload recovers thresholding less than overload, if less than, then execution in step 105, otherwise, method ends.
Step 105, RNC jumps to step 101 by the Radio Link of the one or more UE of reduction of speed of Iub mouth recovery;
Above-mentioned steps (A), (B) described reprovision flow process are adopted in the operation of above-mentioned recovery Radio Link equally, and difference is, has comprised the original Maximum Bit Rate value of the E-DCH channel of the corresponding UE of reduction of speed in the described step (A) in the wireless link reconfigured request; In the described step (B), the Node B of this R6 sub-district dispatches the E-DCH channel of corresponding UE according to the wireless link reconfigured request that receives, and makes its Maximum Bit Rate equal above-mentioned original Maximum Bit Rate value.
Equally, can carry out above-mentioned steps (A), (B) described reprovision flow process in batches, the E-DCH channel of corresponding UE is reverted to original Maximum Bit Rate value before the reduction of speed according to the priority of UE.
Claims (8)
1. the control method of a load of WCDMA system, being applied to comprise adjacent support strengthens the Extended Cell of special uplink channel and does not support to strengthen in the communication network of conventional cell of special uplink channel, it is characterized in that, when the up excess load of conventional cell, radio network controller carries out reprovision by the Iub mouth to the Radio Link that one or more uses strengthen the subscriber equipment of special uplink channel, adjusts the Maximum Bit Rate that it strengthens special uplink channel.
2. the control method of load of WCDMA system as claimed in claim 1 is characterized in that, comprises described conventional cell and Extended Cell in the Active Set of described subscriber equipment.
3. the control method of load of WCDMA system as claimed in claim 2 is characterized in that, this method comprises the steps:
A: radio network controller receives the public-measurement report that the Node B of described conventional cell is uploaded;
B: if judge that according to above-mentioned public-measurement report the uplink load of described conventional cell is higher than the overload threshold of setting, then radio network controller carries out reprovision by the Iub mouth to the Radio Link of one or more described subscriber equipmenies, reduces the Maximum Bit Rate that it strengthens special uplink channel.
4. the control method of load of WCDMA system as claimed in claim 3, it is characterized in that, also comprise step c after step a: if report judges that the uplink load of described conventional cell is lower than the overload recovery thresholding of setting according to public-measurement, then radio network controller recovers the original Maximum Bit Rate value through the enhancing special uplink channel of described step b reprovision.
5. the control method of load of WCDMA system as claimed in claim 3 is characterized in that, the operation of among the described step b Radio Link of subscriber equipment being carried out reprovision comprises following substep:
B1: radio network controller sends wireless link reconfigured request by the Iub mouth to the Node B of described Extended Cell, comprises the bit rate higher limit in this request;
B2: described Node B is dispatched the pairing enhancing special uplink channel of above-mentioned wireless link reconfigured request, makes its bit rate not be higher than above-mentioned bit rate higher limit;
Wherein, the bit rate higher limit is less than the corresponding original Maximum Bit Rate value that strengthens special uplink channel.
6. the control method of load of WCDMA system as claimed in claim 4 is characterized in that, the operation that among the described step c Radio Link of subscriber equipment is recovered comprises following substep:
C1: radio network controller sends wireless link reconfigured request by the Iub mouth to the Node B of described Extended Cell, comprises original Maximum Bit Rate value in this request;
C2: described Node B is dispatched the pairing enhancing special uplink channel of above-mentioned wireless link reconfigured request, makes its bit rate not be higher than above-mentioned original Maximum Bit Rate value.
7. the control method of load of WCDMA system as claimed in claim 4 is characterized in that, also comprises following steps after described step b, the c:
D: if judge that according to public-measurement report the described overload that the uplink load of described conventional cell is lower than the described overload threshold of setting and is higher than setting recovers thresholding, then this method finishes;
E: jump to step a.
8. as the control method of claim 5,6 described load of WCDMA system, it is characterized in that described Node B sends wireless link reconfigured response to described radio network controller after receiving described wireless link reconfigured request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101429033A CN101364833B (en) | 2007-08-09 | 2007-08-09 | Control method for load of WCDMA system |
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| CN2007101429033A CN101364833B (en) | 2007-08-09 | 2007-08-09 | Control method for load of WCDMA system |
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| CN101364833A true CN101364833A (en) | 2009-02-11 |
| CN101364833B CN101364833B (en) | 2012-12-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131926A (en) * | 2010-06-15 | 2016-11-16 | 瑞典爱立信有限公司 | Cell searching in heterogeneous network and measurement |
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| KR100984530B1 (en) * | 2003-08-19 | 2010-10-01 | 엘지전자 주식회사 | Node b scheduling method in mobile communication system |
| EP1672941B1 (en) * | 2004-12-15 | 2007-11-14 | Matsushita Electric Industrial Co., Ltd. | Support of guaranteed bit-rate traffic for uplink transmissions |
| CN101005700A (en) * | 2006-01-20 | 2007-07-25 | 北京三星通信技术研究有限公司 | Method for Mode B reporting maximum up data speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106131926A (en) * | 2010-06-15 | 2016-11-16 | 瑞典爱立信有限公司 | Cell searching in heterogeneous network and measurement |
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