CN100474969C - Method for realizing rapid congestion control - Google Patents
Method for realizing rapid congestion control Download PDFInfo
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- CN100474969C CN100474969C CNB2005100706735A CN200510070673A CN100474969C CN 100474969 C CN100474969 C CN 100474969C CN B2005100706735 A CNB2005100706735 A CN B2005100706735A CN 200510070673 A CN200510070673 A CN 200510070673A CN 100474969 C CN100474969 C CN 100474969C
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Abstract
The invention relates to a method for realizing quick block control. Wherein, when the region emission power is over the region block threshold value, selecting the transmission format combination whose service data is zero in the descending special channel, and selecting the channel with lowest priority; according to the said transmission format combination to process channel treatment; when the region emission power is lower than the region block threshold value, selecting the channel in block state and highest priority, to solve the block. Therefore, the invention can reduce the region emission power by reducing the data flux of descending service, without affecting the cover range of region; when the block is canceled, returning the user service; therefore, the blocked user will not lose conversation. Compared with present technique, the invention has lowest effect on the whole region and single user, to confirm the user service most.
Description
Technical field
The present invention relates to the wireless network communication technique field, relate in particular to the quick congestion control method of a kind of realization.
Background technology
In Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, in order to ensure system's nonoverload and keep stable, need carry out congested control to network, just after system transships, system can be returned the targeted loads value of wireless network planning definition rapidly and controllably by congested control.
At present the jamming control method that adopts is realized by radio network controller (RNC), comprises switching between access control, packet scheduling and frequency etc.(be the base station in the WCDMA system, the cell transmit power measured value that NodeB) reports judges whether to carry out congested control to RNC by Node B.But the cycle long (much larger than 10 milliseconds) of common NodeB reporting measurement value, adding RNC judges a series of processing of measured value, cause the congested control entry-into-force time slow, the situation that the sub-district actual emission power surpasses the sub-district maximum transmit power threshold in control procedure, may occur.If this moment, actual emission power entered the nonlinear area of power amplifier, will cause signal distortion, thereby all quality of signals are exerted an influence; In addition,, also may cause the overpower damage of power amplifier, cause estate performance can not recover normal if actual power is excessive.
Therefore, in order to guarantee the operate as normal of NodeB, NodeB needs to realize: when the congested control of RNC can't guarantee that cell transmit power is within maximum transmit power threshold, in case detected power overload, then adopt the mode of the transmitting power of restriction downlink dedicated channels to make the sub-district total emission power fall back to normal range (NR), like this, just, can guarantee the operate as normal of whole sub-district.
At present, the specific implementation of the transmitting power of the restriction downlink dedicated channels of employing mainly comprises two kinds, will describe respectively below.
First kind of scheme is: when the situation that the sub-district actual emission power surpasses the sub-district maximum transmit power threshold occurring, NodeB carries out amplitude limit with power output by force, and cell transmit power is controlled in the maximum transmit power threshold scope of sub-district.
The shortcoming of this technical scheme is: only simply power output is carried out amplitude limit the power output of power amplifier is descended, the power output of every channel is all descended, comprise the less again channel of the fine and shared power of those quality, therefore can cause all downlink signal quality of this sub-district to descend, may cause call drop under the serious situation; In addition power output is carried out amplitude limit district common channel power is descended, thereby influence the coverage of sub-district, the user who is in cell edge is made a big impact.
Second kind of scheme is: when the sub-district actual emission power occurring and surpass the situation of sub-district maximum transmit power threshold, the inner-loop power control power per liter order of NodeB refusal downlink dedicated channels, only carry out and fall power command, cell transmit power can only be descended can not rise, thereby reaches the purpose of congested control.
The shortcoming of second kind of implementation is very big to the influence of QoS of customer in the power per liter order of NodeB side refusal dedicated channel, is easy to finally make those need the conversation loss of power per liter because down transmitting power causes the error rate too high inadequately.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the quick congestion control method of a kind of realization, when cell transmit power surpasses congestion threshold, not only can reduce cell transmit power fast, and can not influence the coverage of sub-district, can call drop by congested user yet, realize effectively simple.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the quick congestion control method of a kind of realization, comprising:
A1, measure the sub-district current transmit power, when the sub-district current transmit power surpasses the congestion threshold value, choose business datum and be the channel of zero transformat combination;
A2, be that Channel Processing is carried out in zero transformat combination indication according to business datum, be reduced to below the small area jam thresholding up to cell transmit power with described channel
Channel described in steps A 1, the A2 is the minimum channel of priority.
This method also comprises:
B, when the sub-district current transmit power does not surpass the congestion threshold value, judge whether the channel that is in congestion state is arranged in the sub-district;
C, when the channel that is in congestion state is arranged in the sub-district, then choose corresponding channel and separate congestedly, all separated congested up to all channels that are in congestion state.
Described step C specifically comprises:
C1, choose the channel that is in congestion state;
C2, described channel is carried out Channel Processing according to the indication of its actual transformat combination.
Channel described in step C1, the C2 is the highest channel of priority.
Channel described in the present invention is a downlink dedicated channels.
Described Channel Processing is meant the processing procedure of mapping from the chnnel coding to the physical channel.
As seen from the above technical solution provided by the invention, the present invention is when cell transmit power surpasses congestion threshold, utilize the downlink dedicated channels business datum that reduces some low priority to reach the purpose of quick reduction cell transmit power, can not influence simultaneously the coverage of sub-district again, can call drop by congested user yet, realize effectively simple.With respect to prior art, this method has guaranteed user's service to greatest extent to the minimum that influences of whole sub-district and unique user.
Description of drawings
Fig. 1 is the flow chart of the method for the invention.
Embodiment
Core of the present invention is according to the congestion threshold value of sub-district current transmit power and setting the channel that conforms to a predetermined condition in the cell downlink dedicated channel to be handled, that is to say, when cell transmit power surpasses the small area jam threshold value, qualified channel is carried out congested processing, can reduce some downlink dedicated channels business datum like this, thereby realize reducing fast cell transmit power, can not influence the purpose of cell coverage area simultaneously again.When cell transmit power during less than the small area jam threshold value, choose and be in congestion state and the highest channel of priority and separate congestedly, make by congested user to keep not call drop, realize effectively simple.
For the present invention there being further understanding, method of the present invention is described in detail below in conjunction with accompanying drawing.
The specific implementation of the method for the invention may further comprise the steps as shown in Figure 1:
Step 11: set the small area jam threshold value.
In order to carry out congested control, a congestion threshold value should be set according to actual conditions in the sub-district, and this congestion threshold value is a percentage of sub-district maximum transmit power threshold normally, such as 80% or 90%.
Step 12: measure cell transmit power.
Base station node B in the WCDMA system is measured the sub-district current transmit power.
Step 13: judge whether the sub-district current transmit power surpasses the small area jam threshold value, if surpass, then execution in step 14; Otherwise, execution in step 15.
NodeB compares sub-district current transmit power and the described small area jam threshold value of measuring, thereby judges whether to carry out congested control.
If the sub-district current transmit power surpasses described small area jam threshold value, NodeB carries out congested processing; Otherwise whether NodeB judges in the sub-district has by congested channel.
Step 14: choose qualified channel and carry out congested processing.
When the sub-district current transmit power surpassed described small area jam threshold value, NodeB chose qualified channel and carries out congested processing;
Described qualified channel is meant: it is the channel of zero transformat combination that business datum is arranged, and that is to say, comprises in the transformat combination that described channel can be selected that business datum is zero transformat combination;
Describedly carry out congested processing and be meant: is that Channel Processing is carried out in zero transformat combination indication with above-mentioned qualified channel according to business datum.
For the ease of the channel of identification, when carrying out channel congestion, a congestion flag is set in this channel attribute through congested processing.
Data volume seldom when the channel of the congested processing of process aloft transmitted, therefore take transmitting power seldom, thereby realize reducing the purpose of sub-district total emission power, can not influence the coverage of sub-district simultaneously again, can not make the user who is in cell edge be subjected to very big influence.
If the cell transmit power measured value still surpasses the small area jam threshold value next time, then continue to choose qualified channel and carry out above-mentioned congested control, be reduced to below the small area jam thresholding up to cell transmit power.
In addition, carry out choosing the minimum channel of priority when congested and carry out, then can reach better effect.
Whether step 15: judging in the sub-district has by congested channel, if having, then execution in step 16, otherwise congested control procedure finishes.
Whether when the sub-district current transmit power does not surpass the small area jam threshold value, judging has the channel that promptly is in congestion state by congested channel in the sub-district, if the channel that is in congestion state is arranged in the sub-district, NodeB separates congested processing; Otherwise congested control procedure finishes.
Owing to when carrying out congested processing, in by congested channel attribute, be provided with congestion flag, therefore, just can judge according to this sign whether the channel that is in congestion state is arranged in the sub-district.
Step 16: choose corresponding channel and separate congested.
Corresponding channel is meant: the channel that is in congestion state;
Describedly separate congested being meant: above-mentioned channel is carried out Channel Processing according to the transformat combination indication of reality.
Revert to actual data volume aloft when transmitting, thereby the influence of QoS of customer is dropped to minimum through the channel of separating congested processing.
If the cell transmit power measured value is still less than the small area jam threshold value next time, then continue corresponding channel is separated congested, all separated congested up to all channels that are in congestion state.
In addition, separate and choose the highest channel of priority when congested and carry out, then can reach better effect.
Channel described in the present invention all is meant downlink dedicated channels;
A series of processing procedures between described Channel Processing all is meant and shines upon from the chnnel coding to the physical channel.
Jamming control method of the present invention is a loop control process, and the base station node B in the WCDMA system can be measured a cell transmit power by every 10ms, and carries out quick congested control according to this measurement result.
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 (7)
1, the quick congestion control method of a kind of realization is characterized in that, comprising:
A1, measure the sub-district current transmit power, when the sub-district current transmit power surpasses the congestion threshold value, choose business datum and be the channel of zero transformat combination;
A2, be that Channel Processing is carried out in zero transformat combination indication according to business datum, be reduced to below the small area jam thresholding up to cell transmit power with described channel.
2, the quick congestion control method of realization as claimed in claim 1 is characterized in that, described channel is the minimum channel of priority.
3, the quick congestion control method of realization as claimed in claim 1 is characterized in that, this method also comprises:
B, when the sub-district current transmit power does not surpass the congestion threshold value, judge whether the channel that is in congestion state is arranged in the sub-district;
C, when the channel that is in congestion state is arranged in the sub-district, then choose corresponding channel and separate congestedly, all separated congested up to all channels that are in congestion state.
4, the quick congestion control method of realization as claimed in claim 3 is characterized in that, described step C specifically comprises:
C1, choose the channel that is in congestion state;
C2, described channel is carried out Channel Processing according to the indication of its actual transformat combination.
5, the quick congestion control method of realization as claimed in claim 4 is characterized in that, described channel is the highest channel of priority.
6, as the quick congestion control method of each described realization of claim 1 to 5, it is characterized in that described channel is a downlink dedicated channels.
7, the quick congestion control method of realization as claimed in claim 6 is characterized in that, described Channel Processing is meant the processing procedure of mapping from the chnnel coding to the physical channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100706735A CN100474969C (en) | 2005-05-18 | 2005-05-18 | Method for realizing rapid congestion control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100706735A CN100474969C (en) | 2005-05-18 | 2005-05-18 | Method for realizing rapid congestion control |
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| Publication Number | Publication Date |
|---|---|
| CN1867162A CN1867162A (en) | 2006-11-22 |
| CN100474969C true CN100474969C (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100706735A Expired - Fee Related CN100474969C (en) | 2005-05-18 | 2005-05-18 | Method for realizing rapid congestion control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101772069B (en) * | 2008-12-30 | 2014-07-09 | 华为技术有限公司 | Method, controller and control system for processing congestion indicating message |
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- 2005-05-18 CN CNB2005100706735A patent/CN100474969C/en not_active Expired - Fee Related
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Granted publication date: 20090401 Termination date: 20170518 |