CN1615033A - Configurating method and apparatus for channel band width in telecommunicating system - Google Patents
Configurating method and apparatus for channel band width in telecommunicating system Download PDFInfo
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Abstract
The method includes following steps: the target channel band width of user terminal is acquired; according to the target channel band width conforming to preset conditions, the down stream band width of the above user terminal is set again. The device consists of: the target channel band width acquired module, the target channel band width determined module; the channel band width reset up module.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to the collocation method and the device of channel width in a kind of communication system.
Background technology
Along with the continuous high speed development of network communications technology, business that former people must could realize under cable status such as Internet service etc. can realize under wireless status now too.Various handheld mobile devices can provide high speed interconnected access function, this technical advantage embodies particularly evidently in 3G (3G (Third Generation) Moblie), can provide high speed interconnected access function as some terminal equipments in WCDMA (Wideband Code Division Multiple Access (WCDMA)) system, its message transmission rate can reach 2Mbps at least in the stationary indoors environment, and its message transmission rate can reach 384kbps at least in indoor and outdoor walking environment.
In various wireless interconnected access service, the user uses that maximum business such as WWW (World Wide Web (WWW)) browse, FTP (file transfer protocol (FTP)) and E-Mail (Email) etc.These business have a common characteristic, and promptly the delay requirement for transfer of data is lower, but transfer of data is sudden bigger.For example, when the user clicked the connection of the WWW page, user terminal sent page download request, and network side will send one or more packet sequences, and have lot of data and require to transmit this moment on this user terminal down channel; After download was finished, the user need read with the regular hour, and during this period of time data quantity transmitted just becomes seldom on the down channel of this user terminal.This class is not high to the delay requirement of transfer of data, and the big business of service source message transmission rate excursion is commonly referred to as Best Effort (trying) business, is called for short the BE business.In the standard of WCDMA system, PS (grouping) territory Interactive (interactive mode) and Background (background) business promptly are the BE business.
Because Radio Resource is limited, thereby the channel width reasonable distribution of BE business is just seemed very important.If distribute the downstream channel bandwidth of largest request for user terminal, then when this teleservice burst, can satisfy the user terminal data transmission requirements, and require transfer of data more after a little while at this user terminal, can cause the serious waste of this user terminal downstream channel bandwidth resource.If for user terminal distributes lower downstream channel bandwidth, then when this teleservice burst, can't satisfy this user terminal data transmission requirements, cause service QoS (quality) to descend to this user.
For these reasons, we need be according to the variation of the service source rate requirement of user terminal, carry out the dynamic-configuration of user terminal downstream channel bandwidth, when user terminal needs data quantity transmitted big, then distribute bigger downstream channel bandwidth for this user terminal, when user terminal needs the less or user terminal of data quantity transmitted not have transfer of data, then need to reduce the downstream channel bandwidth of this user terminal.
The principle of the dynamic-configuration to the user terminal downstream channel bandwidth of the prior art is: according to the teleservice amount, carry out reshuffling of this user terminal downstream channel bandwidth with reference to the air interface quality of current link simultaneously.Its specific implementation method is: when user terminal was set up the BE business, network side issues the uplink and downlink measuring business volume and down transmitting power is measured.According to the down transmitting power of measuring, determine the quality of air interface.Aloft under the situation that the interface quality allows, if the traffic carrying capacity that measures triggers pre-configured traffic carrying capacity Upper threshold, and in the scope that the down transmitting power of the down transmitting power of this user terminal under current bandwidth allows, then the downstream channel bandwidth of this user terminal is reshuffled the downstream channel bandwidth of this user terminal that raises.If the traffic carrying capacity that measures triggers pre-configured traffic carrying capacity Lower Threshold, then reduce the downstream channel bandwidth of this user terminal.
In sum, this method that the down channel of user terminal is reshuffled of the prior art, user terminal is being carried out only consider the down transmitting power situation of this user terminal under current bandwidth when bandwidth raises, do not consider whether the down transmitting power that this user terminal is configured to after the target bandwidth can satisfy the business need of this user terminal in the same place, if can not satisfy, can cause call drop or reduce downstream channel bandwidth once more, produce the vibration that downstream channel bandwidth is reshuffled.And when user terminal being carried out the downstream channel bandwidth rising, there is not taking into account system load increase can cause admission rejection, be that system loading conditions is not when allowing to increase again, existing method is also no longer carried out the negotiation of downstream channel bandwidth, reduces certain destination channel bandwidth and user terminal is carried out downstream channel bandwidth again reshuffles.Simultaneously, when user terminal being carried out the downstream channel bandwidth rising, when not considering that downstream channel bandwidth increases, the increase of system load can make system enter congestion state, thereby influences the stability of communication system in the prior art.
Summary of the invention
The objective of the invention is to, the collocation method and the device of channel width in a kind of communication system are provided, the down transmitting power that the target downlink channel width that utilization need be reshuffled user terminal is correlated with calculates and down load calculates, determine to satisfy the user terminal demand and make system that power limited, the congested target downlink channel width of load can not take place simultaneously, to realize raising communication system stability, to improve purpose to the subscriber terminal service quality.
For achieving the above object, the collocation method of channel width in a kind of communication system provided by the invention comprises:
A, determine that the downstream channel bandwidth of user terminal need reshuffle, and obtain the destination channel bandwidth of this user terminal;
The destination channel bandwidth that b, basis conform to a predetermined condition is reshuffled the downstream channel bandwidth of described user terminal.
When described destination channel bandwidth is one when above, described step b comprises:
B1, determine in the destination channel bandwidth maximum destination channel bandwidth, and with its destination channel bandwidth that need reshuffle as this user terminal;
B2, down transmitting power and down load when calculating described user terminal and being configured to the destination channel bandwidth that this user terminal need reshuffle;
B3, down transmitting power and down load when being configured to the destination channel bandwidth that these user terminal needs reshuffle according to the user terminal of described calculating judge whether the destination channel bandwidth that these user terminal needs are reshuffled is the destination channel bandwidth that conforms to a predetermined condition;
B4 if the destination channel bandwidth that conforms to a predetermined condition according to the destination channel bandwidth that these user terminal needs are reshuffled the downstream channel bandwidth of described user terminal is reshuffled;
B5 otherwise, determine in all the other destination channel bandwidth maximum destination channel bandwidth, and with it as the destination channel bandwidth that this user terminal need be reshuffled, return step b2.
Described step b also comprises:
If the destination channel bandwidth does not all meet predetermined condition, the downstream channel bandwidth of described user terminal remains unchanged.
Down transmitting power P when the described user terminal of the calculating of described step b2 is configured to the destination channel bandwidth that this user terminal need reshuffle
2Can obtain by the following method:
Wherein: SF
1Be the descending spreading factor of described user terminal when the current channel width; SF
2Descending spreading factor when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal;
For described user terminal should the required descending signal interference ratio of business when the current channel width; P
1Down transmitting power for the current channel width of described user terminal;
Should the required descending signal interference ratio of business when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal.
Described P
1Can obtain by the following method:
Wherein: SF
1Be the descending spreading factor of described user terminal in current channel width;
For described user terminal should the required descending signal interference ratio of business when the current channel width; CPICH_Tx_Power is the pilot transmit power of sub-district;
Pilot tone for the user terminal reception
α is the orthogonalization factor; P
TxTotalBe the total transmitting power of cell downlink.
Described P
1Also can obtain by measuring the down transmitting power of described user terminal when the current channel width.
Down load L when the described user terminal of the calculating of described step b2 is configured to the destination channel bandwidth that this user terminal need reshuffle
2Can obtain by the following method:
L
2＝L
1+(P
2-P
1)+α；
Wherein: L
1Be the down load of described user terminal when the current channel width, P
1Be the down transmitting power of described user terminal when the current channel width; P
2Down transmitting power when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal; α is a predetermined value.
Described step b3 comprises:
Whether the difference of the maximum power that down transmitting power when being configured to the destination channel bandwidth that these user terminal needs reshuffle according to the user terminal of described calculating and down load are judged the destination channel bandwidth that this down transmitting power and these user terminal needs are reshuffled is greater than the predetermined bias value, and whether this down load is simultaneously less than predetermined down load access thresholding and predetermined downlink congestion thresholding;
If the difference of the maximum power of the destination channel bandwidth that this down transmitting power and this user terminal need be reshuffled is greater than the predetermined bias value, and less than predetermined down load access thresholding and predetermined downlink congestion thresholding, the destination channel bandwidth that this user terminal need be reshuffled is the destination channel bandwidth that conforms to a predetermined condition to this down load simultaneously;
Otherwise the destination channel bandwidth that this user terminal need be reshuffled is the destination channel bandwidth that does not meet predetermined condition.
The present invention also provides the device of channel width configuration in a kind of communication system, comprising:
Obtain destination channel bandwidth module: obtain the destination channel bandwidth of user terminal, and transmit it to definite destination channel bandwidth module;
Determine destination channel bandwidth module: obtain the destination channel bandwidth that destination channel bandwidth module transmission comes according to described, determine the destination channel bandwidth that conforms to a predetermined condition, and transmit it to channel width and reshuffle module;
Channel width is reshuffled module: according to the destination channel bandwidth that described definite destination channel bandwidth module transmission comes the downstream channel bandwidth of described user terminal is reshuffled.
Described definite destination channel bandwidth module comprises:
Calculate the down transmitting power submodule:, and this down transmitting power transferred to the judgement submodule according to described down transmitting power when obtaining the described user terminal of destination channel bandwidth prediction that the transmission of destination channel bandwidth module comes and being configured to the destination channel bandwidth;
Calculate the down load submodule:, and this down load transferred to the judgement submodule according to described down load when obtaining the described user terminal of destination channel bandwidth prediction that the transmission of destination channel bandwidth module comes and being configured to the destination channel bandwidth;
Judgement submodule: judge according to down transmitting power and the next down load of described calculating down load submodule transmission that described calculating down transmitting power submodule transmission comes whether the destination channel bandwidth conforms to a predetermined condition, and destination channel bandwidth for transmission to the described channel width that conforms to a predetermined condition is reshuffled module.；
Can obviously learn by technique scheme, the calculating of the down transmitting power of the present invention when user terminal is reconfigured to target downlink channel width, determine that user terminal is reconfigured to target downlink channel width, when this user terminal obtains rational message transmission rate, whether the down transmitting power of this user terminal can satisfy the business need of this user terminal in the same place, has avoided can not satisfying call drop that the business need of this user terminal in the same place cause or the concussion of reshuffling that reduces this terminal use's bandwidth once more because of down transmitting power.The calculating of the down load when user terminal is reconfigured to target downlink channel width, when determining that user terminal is reconfigured to target downlink channel width, the down load situation of this user terminal can be by access, and can not make communication system enter the load congestion state; By to more than one destination channel bandwidth by the channel width maximum to the channel width minimum, detect it in order one by one and whether can be used as the downstream channel bandwidth that this user terminal is reshuffled, keep at communication system under the situation of normal operating conditions, can be when user terminal be reshuffled downstream channel bandwidth, repeatedly hold consultation, farthest satisfied the business need of user terminal with communication system, user terminal.Thereby realized improving communication system stability, improving purpose to the subscriber terminal service quality.
Description of drawings
Fig. 1 is that user terminal downstream channel bandwidth of the present invention is reshuffled flow chart;
Fig. 2 is the device schematic diagram of channel width configuration in the communication system of the present invention.
Embodiment
Core of the present invention is need carry out channel width when reshuffling when definite user terminal, directly the channel width reprovision of user terminal is not changed to the destination channel bandwidth, but the destination channel bandwidth is screened, determine an only destination channel bandwidth, when guaranteeing that user terminal is reconfigured to the destination channel bandwidth, can not cause that the communication system load is congested, problems such as down transmitting power is limited, the reduction of subscriber terminal service quality, the while can be satisfied the business demand of user terminal to greatest extent.
Based on core concept of the present invention, the down transmitting power of this user terminal in the time of need being reconfigured to the destination channel bandwidth to the channel width of user terminal and the down load of communication system are judged, because each destination channel bandwidth all can have its descending maximum transmission power separately, if the difference of down transmitting power when user terminal is reconfigured to the destination channel bandwidth and the descending maximum transmission power of this destination channel bandwidth is greater than the predetermined bias value, and the channel width of user terminal is when being reconfigured to the destination channel bandwidth, the down load of communication system is less than the descending access thresholding of the BE business of this user terminal use, the down load of communication system is less than the down load congestion threshold of communication system simultaneously, illustrate that then this destination channel bandwidth is a suitable downstream channel bandwidth to the band user terminal, the downstream channel bandwidth of this user terminal can be reshuffled according to this destination channel bandwidth.
When the destination channel bandwidth is one when above, in order to satisfy the business demand of user terminal to greatest extent, can at first choose destination channel bandwidth maximum in the destination channel bandwidth, the destination channel bandwidth that need reshuffle as this user terminal this its, and whether the destination channel bandwidth that definite this user terminal need be reshuffled is suitable, if suitable, then the destination channel bandwidth of reshuffling according to these user terminal needs is reshuffled the downstream channel bandwidth of user terminal; If improper, then continue to choose destination channel bandwidth maximum in other destination channel bandwidth, with its destination channel bandwidth that need dispose as this user terminal.Thereby as much as possible the downstream channel bandwidth reprovision of user terminal is changed to the downstream channel bandwidth of the channel width maximum that communication system, user terminal all allow.
When the downstream channel bandwidth reprovision of user terminal is changed to the destination channel bandwidth, the down transmitting power P of this user terminal
2Can obtain by the following method:
Wherein: SF
1Be the descending spreading factor of described user terminal when the current channel width; SF
2Descending spreading factor when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal;
Be the signal interference ratio of described user terminal when the current channel width; P
1Be the down transmitting power of described user terminal when the current channel width;
Signal interference ratio when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal.
The down transmitting power P of user terminal in the above-mentioned formula when current channel width
1Can draw by following two kinds of methods.
First method, the user terminal down transmitting power P when current channel width
1Can calculate by following formula:
Wherein: SF
1Be the descending spreading factor of described user terminal when the current channel width;
For described user terminal should the required descending signal interference ratio of business when the current channel width; CPICH_Tx_Power is the pilot transmit power of sub-district;
Pilot tone for the user terminal reception
α is the orthogonalization factor; P
TxTotalBe the total transmitting power of cell downlink.
Second method, user terminal is at the down transmitting power P of current channel width
1Can measure according to the network side of communication system.
When if the downstream channel bandwidth reprovision of user terminal is changed to the destination channel bandwidth that this user terminal need reshuffle, the down load L of communication system
2Can obtain by the following method:
L
2＝L
1+(P
2-P
1)+α；
Wherein: L
1Be the down load of described user terminal when the current channel width, P
1Be the down transmitting power of described user terminal when the current channel width; P
2Down transmitting power when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal; α is a predetermined value.
P in the above-mentioned formula
1, P
2Can utilize the method for mentioning in the specific embodiment of the invention to draw.
If destination channel bandwidth all in the destination channel bandwidth are by after the aforementioned calculation, all can not make the channel width of user terminal be reconfigured to the difference of descending maximum transmission power of the down transmitting power of the destination channel bandwidth that this user terminal need reshuffle and the destination channel bandwidth that this user terminal need be reshuffled simultaneously greater than the predetermined bias value, and the downstream channel bandwidth of user terminal is when being reconfigured to the destination channel bandwidth that this user terminal need reshuffle, the down load of communication system is less than the descending access thresholding of the BE business of this user terminal use, the down load of communication system is less than the down load congestion threshold of communication system simultaneously, so, the downstream channel bandwidth of this user terminal is not reshuffled.
Below in conjunction with accompanying drawing and embodiment technical scheme provided by the invention is described in further detail.
The flow chart of channel width collocation method as shown in Figure 1 in the communication system provided by the invention.
In Fig. 1, step 100 determines that at first user terminal need carry out downstream channel bandwidth and reshuffle, and then, reads the destination channel bandwidth of this user terminal that communication system provides, and target setting channel width has N, and the count value of establishing N is n, n=1.To step 110, judge whether n is not more than N, if n greater than N, to step 180, does not have suitable destination channel bandwidth, the downstream channel bandwidth of user terminal is not reshuffled.
In step 110, if n is not more than N, then arrive step 120, choose destination channel bandwidth maximum in the destination channel bandwidth, and with its destination channel bandwidth that need dispose as this user terminal, to step 130, if the down transmitting power P when calculating the downstream channel bandwidth of this user terminal and being configured to the destination channel bandwidth that this user terminal need dispose
2Down load L with communication system
2, down transmitting power P
2With down load L
2Computational methods can be with reference to foregoing description.
Calculate down transmitting power P
2With down load L
2After, to step 140, read the descending maximum transmission power P of the destination channel bandwidth that this user terminal need dispose
Max, judge P
Max-P
2Whether greater than predetermined bias value σ, if P
Max-P
2Be not more than predetermined bias value σ, then arrive step 170, n=n+1; Arrive step 110 again, judge that whether n is greater than N, if n is not more than N, to step 120, from all the other destination channel bandwidth, choose maximum destination channel bandwidth, and, continue the destination channel bandwidth that this user terminal need dispose is carried out the calculating and the deterministic process of down transmitting power and down load with its destination channel bandwidth that need dispose as this user terminal.
In step 140, if P
Max-P
2＞predetermined bias value σ to step 150, reads the down load congestion threshold TH of communication system
CgThe down load access thresholding TH of the BE business of using with this user terminal
Ac, judge down load L
2Whether the while is less than down load congestion threshold TH
CgDown load access thresholding TH with the BE business
AcIf, not simultaneously less than, then arrive step 170, n=n+1; To step 110, judge that whether n is greater than N, if n is not more than N, to step 120, from all the other destination channel bandwidth, choose maximum destination channel bandwidth, and, continue the destination channel bandwidth that this user terminal need dispose is carried out the calculating and the deterministic process of down transmitting power and down load with its destination channel bandwidth that need dispose as this user terminal.
In step 150, if down load L
2While is less than the down load access thresholding TH of down load congestion threshold THcg and BE business
Ac, then arriving step 160, the destination channel bandwidth that this user terminal need dispose is suitable destination channel bandwidth, according to the destination channel bandwidth of this user terminal needs configuration the downstream channel bandwidth of user terminal is reshuffled.
The device schematic diagram of channel width configuration as shown in Figure 2 in the communication system provided by the invention.
In Fig. 2, device provided by the invention comprises: obtain destination channel bandwidth module 200, determine destination channel bandwidth module 210, channel width is reshuffled module 220.
Determine that channel width module 210 comprises: calculate down transmitting power submodule 211, calculate down load submodule 212, judgement submodule 213.
Obtaining destination channel bandwidth module 200 is used for need carrying out downstream channel bandwidth when reshuffling at user terminal, read the destination channel bandwidth that communication system provides, and maximum destination channel bandwidth in definite destination channel bandwidth, and with its destination channel bandwidth that need dispose as this user terminal, the destination channel bandwidth that this user terminal need be disposed transfers to respectively and calculates down transmitting power submodule 211 and calculate down load submodule 212 simultaneously.
If when calculating down transmitting power submodule 211 and being reconfigured to the destination channel bandwidth of this user terminal needs configuration according to the downstream channel bandwidth of the destination channel bandwidth calculation user terminal that obtains this user terminal needs configuration that 200 transmission of destination channel bandwidth module come, the down transmitting power of this user terminal, and with the down transmitting power that this calculates transfer to the judgement submodule 213.
If when calculating down load submodule 212 and being reconfigured to the destination channel bandwidth of this user terminal needs configuration according to the downstream channel bandwidth of the destination channel bandwidth calculation user terminal that obtains this user terminal needs configuration that 200 transmission of destination channel bandwidth module come, the down load of communication system, and with the down load that this calculates transfer to the judgement submodule 213.
Reshuffled the destination channel bandwidth of module 220 this user terminal needs configuration that 213 transmission come according to the judgement submodule reshuffles the downstream channel bandwidth of user terminal by channel width.
If judgement submodule 213 is judged the difference of the descending maximum transmission power of the destination channel bandwidth that this down transmitting power and this user terminal need dispose and is not more than the predetermined bias value, or this down load does not use professional down transmitting power access thresholding less than down load congestion threshold and this user terminal of communication system simultaneously, the message transmission that then will choose maximum destination channel bandwidth again is to obtaining destination channel bandwidth module 200, obtain destination channel bandwidth module 200 this information that 213 transmission come according to the judgement submodule and in all the other destination channel bandwidth, choose maximum destination channel bandwidth again, and with its destination channel bandwidth that need dispose as this user terminal, the destination channel bandwidth that this user terminal need be disposed transfers to respectively and calculates down transmitting power submodule 211 and calculate down load submodule 212 simultaneously.
When obtain destination channel bandwidth module 200 in the destination channel bandwidth all destination channel bandwidth all transfer to respectively according to judgement submodule 213 signal transmitted calculate down transmitting power submodule 211 and calculate down load submodule 212 after, still receive the information of choosing maximum destination channel bandwidth again that the transmission of judgement submodule 213 comes, the downstream channel bandwidth that this user terminal is described can not be carried out downstream channel bandwidth according to the destination channel bandwidth and be reshuffled.The process that end is reshuffled the downstream channel bandwidth of this user terminal.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wishes that appended claim comprises these distortion and variation.
Claims (10)
1, the collocation method of channel width in a kind of communication system is characterized in that comprising:
A, determine that the downstream channel bandwidth of user terminal need reshuffle, and obtain the destination channel bandwidth of this user terminal;
The destination channel bandwidth that b, basis conform to a predetermined condition is reshuffled the downstream channel bandwidth of described user terminal.
2, the collocation method of channel width in a kind of communication system as claimed in claim 1, it is characterized in that when described destination channel bandwidth be one when above, described step b comprises:
B1, determine in the destination channel bandwidth maximum destination channel bandwidth, and with its destination channel bandwidth that need reshuffle as this user terminal;
B2, down transmitting power and down load when calculating described user terminal and being configured to the destination channel bandwidth that this user terminal need reshuffle;
B3, down transmitting power and down load when being configured to the destination channel bandwidth that these user terminal needs reshuffle according to the user terminal of described calculating judge whether the destination channel bandwidth that these user terminal needs are reshuffled is the destination channel bandwidth that conforms to a predetermined condition;
B4 if the destination channel bandwidth that conforms to a predetermined condition according to the destination channel bandwidth that these user terminal needs are reshuffled the downstream channel bandwidth of described user terminal is reshuffled;
B5 otherwise, determine in all the other destination channel bandwidth maximum destination channel bandwidth, and with it as the destination channel bandwidth that this user terminal need be reshuffled, return step b2.
3, the collocation method of channel width in a kind of communication system as claimed in claim 1 or 2 is characterized in that described step b also comprises:
If the destination channel bandwidth does not all meet predetermined condition, the downstream channel bandwidth of described user terminal remains unchanged.
Down transmitting power P when 4, the collocation method of channel width in a kind of communication system as claimed in claim 3, the described user terminal of calculating that it is characterized in that described step b2 are configured to the destination channel bandwidth that this user terminal need reshuffle
2Can obtain by the following method:
Wherein: SF
1Be the descending spreading factor of described user terminal when the current channel width; SF
2Descending spreading factor when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal;
For described user terminal should the required descending signal interference ratio of business when the current channel width; P
1Be the down transmitting power of described user terminal when the current channel width;
Should the required descending signal interference ratio of business when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal.
5, the collocation method of channel width in a kind of communication system as claimed in claim 4 is characterized in that described P
1Can obtain by the following method:
Wherein: SF
1Be the descending spreading factor of described user terminal when the current channel width;
For described user terminal should the required descending signal interference ratio of business when the current channel width; CPICH_Tx_Power is the pilot transmit power of sub-district; (E
c/ N
0)
CPICHPilot tone E for the user terminal reception
c/ N
0α is the orthogonalization factor; P
TxTotalBe the total transmitting power of cell downlink.
6, the collocation method of channel width in a kind of communication system as claimed in claim 4 is characterized in that described P
1Can obtain by measuring the down transmitting power of described user terminal when the current channel width.
Down load L when 7, the collocation method of channel width in a kind of communication system as claimed in claim 3, the described user terminal of calculating that it is characterized in that described step b2 are configured to the destination channel bandwidth that this user terminal need reshuffle
2Can obtain by the following method:
L
2＝L
1+(P
2-P
1)+a；
Wherein: L
1Be the down load of described user terminal when the current channel width, P
1Be the down transmitting power of described user terminal when the current channel width; P
2Down transmitting power when being configured to the destination channel bandwidth that this user terminal need reshuffle for described user terminal; α is a predetermined value.
8, the collocation method of channel width in a kind of communication system as claimed in claim 3 is characterized in that described step b3 comprises:
Whether the difference of the maximum power that down transmitting power when being configured to the destination channel bandwidth that these user terminal needs reshuffle according to the user terminal of described calculating and down load are judged the destination channel bandwidth that this down transmitting power and these user terminal needs are reshuffled is greater than the predetermined bias value, and whether this down load is simultaneously less than predetermined down load access thresholding and predetermined downlink congestion thresholding;
If the difference of the maximum power of the destination channel bandwidth that this down transmitting power and this user terminal need be reshuffled is greater than the predetermined bias value, and less than predetermined down load access thresholding and predetermined downlink congestion thresholding, the destination channel bandwidth that this user terminal need be reshuffled is the destination channel bandwidth that conforms to a predetermined condition to this down load simultaneously;
Otherwise the destination channel bandwidth that this user terminal need be reshuffled is the destination channel bandwidth that does not meet predetermined condition.
9, the device of channel width configuration in a kind of communication system is characterized in that comprising:
Obtain destination channel bandwidth module: obtain the destination channel bandwidth of user terminal, and transmit it to definite destination channel bandwidth module;
Determine destination channel bandwidth module: obtain the destination channel bandwidth that destination channel bandwidth module transmission comes according to described, determine the destination channel bandwidth that conforms to a predetermined condition, and transmit it to channel width and reshuffle module;
Channel width is reshuffled module: according to the destination channel bandwidth that described definite destination channel bandwidth module transmission comes the downstream channel bandwidth of described user terminal is reshuffled.
10, the device of channel width configuration in a kind of communication system as claimed in claim 9 is characterized in that described definite destination channel bandwidth module comprises:
Calculate the down transmitting power submodule:, and this down transmitting power transferred to the judgement submodule according to described down transmitting power when obtaining the described user terminal of destination channel bandwidth prediction that the transmission of destination channel bandwidth module comes and being configured to the destination channel bandwidth;
Calculate the down load submodule:, and this down load transferred to the judgement submodule according to described down load when obtaining the described user terminal of destination channel bandwidth prediction that the transmission of destination channel bandwidth module comes and being configured to the destination channel bandwidth;
Judgement submodule: judge according to down transmitting power and the next down load of described calculating down load submodule transmission that described calculating down transmitting power submodule transmission comes whether the destination channel bandwidth conforms to a predetermined condition, and destination channel bandwidth for transmission to the described channel width that conforms to a predetermined condition is reshuffled module.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119677A1 (en) * | 2005-05-13 | 2006-11-16 | Zte Corporation | Traffic bandwidth dynamic control allocation method in mobile communication system |
| CN101449527A (en) * | 2006-05-15 | 2009-06-03 | 国际商业机器公司 | Increasing link capacity via traffic distribution over multiple Wi-Fi access points |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163005C (en) * | 2001-09-03 | 2004-08-18 | 华为技术有限公司 | Dynamic channel configuration method based on source rate estimation |
| JP3803290B2 (en) * | 2001-12-28 | 2006-08-02 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system, communication channel allocation method, channel allocation apparatus, and information management apparatus |
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2003
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006119677A1 (en) * | 2005-05-13 | 2006-11-16 | Zte Corporation | Traffic bandwidth dynamic control allocation method in mobile communication system |
| CN101167387B (en) * | 2005-05-13 | 2011-01-26 | 中兴通讯股份有限公司 | Mobile communication system service bandwidth dynamic control distributing method |
| CN101449527A (en) * | 2006-05-15 | 2009-06-03 | 国际商业机器公司 | Increasing link capacity via traffic distribution over multiple Wi-Fi access points |
| US8169900B2 (en) | 2006-05-15 | 2012-05-01 | International Business Machines Corporation | Increasing link capacity via traffic distribution over multiple Wi-Fi access points |
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| CN100411447C (en) | 2008-08-13 |
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