CN100411363C - High speed down sharing channel resource distributing method - Google Patents
High speed down sharing channel resource distributing method Download PDFInfo
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- CN100411363C CN100411363C CNB2006100628853A CN200610062885A CN100411363C CN 100411363 C CN100411363 C CN 100411363C CN B2006100628853 A CNB2006100628853 A CN B2006100628853A CN 200610062885 A CN200610062885 A CN 200610062885A CN 100411363 C CN100411363 C CN 100411363C
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Abstract
When the real quantity of user's waiting for sent message is less than the max quantity of message allowing the user to send, then reduces crossly step by step the power and the number of the hi-speed down-going share code channel, configures the power and the code channel number matching to the real quantity of user message. This scheme both fulfills user-sending requirement and balances the resource consumption of the hi-speed down-going share channel. The saved resource may be dispatch to other users. This ensures the max data throughput in whole cell.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of technology of high speed descending sharing channel resource allocation.
Background technology
The full name of HSDPA is that high speed downlink packet inserts (High Speed Downlink PacketAccess), it is the key property of WCDMA technology the 5th version, retransmit series of key techniques such as (HARQ:Hybrid AutomaticRepeat Request) by adaptive modulation and coding (AMC:Adaptive Modulate and Coding), mixing, realized descending high speed data transfer.
In the WCDMA system, the introducing of HSDPA has increased by three kinds of channels, be respectively at the HS-PDSCH of downlink transmission data information channel (High Speed Physical Downlink SharedChannel, high-speed physical downlink shared channel (HS-PDSCH)), HS-SCCH channel (the High Speed Shared Control Channel of transmission Downlink Control Information, High-Speed Shared Control Channel), and the HS-DPCCH channel (High Speed-Dedicated Physical ControlChannel, High-Speed Dedicated Physical Control Channel) of transmission uplink feedback information.
The HSDPA resource of sub-district comprises HS-SCCH channel code resource, HS-DSCH (High SpeedDownlink Shared Channel, high speed descending sharing channel) channel code resource and HSDPA power resource, wherein HS-SCCH channel and HS-DSCH Channel Sharing HSDPA power resource.The sign indicating number resource of HS-SCCH is relative with power resource allocation simpler, and a common user only distributes a HS-SCCH sign indicating number, corresponding HS-SCCH power or by the fixed value setting, or by the downlink dedicated channels variable power of following; User's HS-DSCH sign indicating number and power resource then be subjected to character (being that data re-transmission or new data send) that this data of user send, current available sign indicating number resource and power resource, etc. data volume to be sent, CQI (the Channel Quality Indicator of reporting of user, channel quality indication) etc. influence of various factors can have the plurality of distribution strategy.
According to current available HS-DSCH sign indicating number resource in sub-district and HS-DSCH power, can determine the current maximum fault information that sends of user; If the maximum fault information that the actual waiting for sent message of user can send more than or equal to the user, it is out-of-resource condition, then can only all distribute to this user to current resource at most, and during the maximum fault information that the actual waiting for sent message of user can send less than the user, existing a kind of distribution method adopts be with the sub-district can with sign indicating number and power resource all distribute to this user, send the actual waiting for sent message of user, the drawback of this algorithm is at most only to dispatch a user in a subframe, but use too much resource, caused the wasting of resources; The use of power simultaneously is also excessive, cause other user is disturbed excessive.Existing another kind of distribution method is: taste the landing attempt low-power, until dropping to a minimum power that can satisfy actual waiting for sent message; On this power basis, reattempt the reduction code channel number, until dropping to a minimum code channel number that can satisfy actual waiting for sent message, remaining sign indicating number and power resource are distributed to other user by same procedure.
According to this algorithm, if there are 5 HS-DSCH channel code the sub-district, the HS-DSCH available horsepower is 36dBm, and pilot power is 33dBm; Certain dispatched users has the 5000bit amount of information to be sent, and UE reports CQI=22, and MPO (measurement power offset measures power excursion) is 3, and ability rating is 10.
The CQI mapping table of supposing the UE of ability rating 10 is:
Table 1
The process of search code channel and power resource is as follows:
| CQI | Corresponding power (dBm) | Code channel number | Can send amount of information |
| 22 | 36 | 5 | 7168 |
| 21 | 35 | 5 | 6500 |
| 20 | 34 | 5 | 5800 |
| 19 | 33 | 5 | 5200 |
| 19 | 33 | 4 | 4700 |
Table 2
The result of search is: distributing user 33dBm power, 5 code channels; Power resource residue 33dBm, code channel is residue not, can not reallocate to other user.
This shows, because distribution method improper makes power resource and code channel resource consume the ratio inequality, caused the waste of resource in the prior art.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of high speed down sharing channel resource distributing method, when satisfying user's needs transmission information requirement as far as possible, make the resource consumption of high speed descending sharing channel be able to equilibrium, thereby improve the data throughout of whole sub-district.
For achieving the above object, when resource allocation methods provided by the invention comprises the maximum fault information that can send less than the user when the actual waiting for sent message of user, intersect and progressively reduce power of high-speed downlink shared channel and code channel number, distribute power and the code channel that mates with actual waiting for sent message for the user.
Preferably, the present invention specifically comprises step:
A) power is reduced a stepping, judge whether resource satisfies actual waiting for sent message, if satisfied, execution in step B then), otherwise with stepping of back-off, and the power and the code channel that obtain distributed to the user;
B) code channel number is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step A if satisfied), otherwise with stepping of code channel number rollback, and the power and the code channel that obtain distributed to the user.
Preferably, the present invention specifically comprises step:
C) code channel number is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step D if satisfied), otherwise with stepping of code channel number rollback, and the power and the code channel that obtain distributed to the user;
D) power is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step C if satisfied), otherwise with stepping of back-off, and the power and the code channel that obtain distributed to the user.
In summary it can be seen, the invention provides a kind of high speed down sharing channel resource distributing method, when satisfying user's needs transmission information requirement, make the resource consumption of high speed descending sharing channel be able to equilibrium as far as possible, avoided occurring a resource and used up, and another resource also has redundancy; Residual resource can be given more user again, thereby makes the data throughout of whole sub-district reach maximum.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer,, the present invention is described in further detail below for embodiment.
Core concept of the present invention is that when satisfying user's needs transmission information requirement, the employing intersection progressively reduces the method for power and code channel number as far as possible, goes for the power and the code channel of an actual waiting for sent message of match user.Thereby reach the purpose of the data throughout of balanced resource consumption, the whole sub-district of raising.
Embodiment one
Present embodiment may further comprise the steps:
Earlier power is reduced a stepping, the value of the stepping of power reduction herein is advisable with 1dB, judges whether resource satisfies actual waiting for sent message:
If do not satisfy, illustrate that then previous power is the lowest power requirement of satisfying actual waiting for sent message, stepping of back-off promptly need be got back to previous performance number, and the power and the relevant code track that obtain are distributed to the user;
If satisfy, then again code channel number is reduced a stepping, the value of the stepping of code channel number reduction herein is advisable with 1 code channel, judges whether resource satisfies actual waiting for sent message:
If do not satisfy, illustrate that then previous code channel number is the minimum code channel number requirement of satisfying actual waiting for sent message, stepping of code channel number rollback promptly need be got back to previous code channel number, and give the user the code channel number and the corresponding power allocation that obtain;
By carrying out power and the code channel that above step obtains, then,, can distribute to other user by same procedure for remaining code channel and power resource for distributing to this user's final resource.
Contrast in the aforementioned prior art search procedure of sign indicating number and channel resource, utilize the method in the present embodiment, the process of searching code and channel then is:
| CQI | Corresponding power (dBm) | Code channel number | Can send amount of information |
| 22 | 36 | 5 | 7168 |
| 21 | 35 | 5 | 6500 |
| 21 | 35 | 4 | 5800 |
| 20 | 34 | 4 | 5200 |
| 20 | 34 | 3 | 4700 |
Final result is: the power of distributing user 34dBm, and 4 code channels, the power of residue 32dBm and 1 code channel resource then can offer other users and use.
Wherein, CQI is the channel quality indication that UE reports, UE is a value of estimating CQI according to pilot channel, its span is 0 to 30, CQI has corresponding relation with the power that is adopted, search procedure of the present invention does not exert an influence to channel quality, but select suitable power, code channel number to send the suitable data amount according to the channel quality that UE reports: channel quality is good, just can a multiple dot information, if the maximum fault information that actual waiting for sent message can send less than the user just can reduce power or code channel number.
It is to be noted, the situation of the present invention the is primarily aimed at maximum fault information that to be the actual waiting for sent message of user can send less than the user, when maximum fault information that the actual waiting for sent message of user can send more than or equal to the user, be out-of-resource condition, then current resource all distributed to this user.
Embodiment two
Present embodiment may further comprise the steps:
Earlier code channel number is reduced a stepping, judges whether resource satisfies actual waiting for sent message:
If do not satisfy, illustrate that then previous code channel number is the minimum code channel number requirement of satisfying actual waiting for sent message, stepping of code channel number rollback promptly need be got back to previous code channel number, and give the user the code channel number and the corresponding power allocation that obtain;
If satisfy, then again power is reduced a stepping, judge whether resource satisfies actual waiting for sent message:
If do not satisfy, illustrate that then previous power is the lowest power requirement of satisfying actual waiting for sent message, stepping of back-off promptly need be got back to previous performance number, and the power and the relevant code track that obtain are distributed to the user.
By carrying out power and the code channel that above step obtains, then for distributing to this user's final resource, wherein the value of power and code channel number reduction stepping for remaining code channel and power resource, can be distributed to other user with embodiment one by same procedure.
Equally, the situation of the present invention the is primarily aimed at maximum fault information that to be the actual waiting for sent message of user can send less than the user, when maximum fault information that the actual waiting for sent message of user can send more than or equal to the user, promptly out-of-resource condition is then all distributed to this user to current resource.
The difference of embodiment one and embodiment two is that embodiment one reduces power and code channel number from reducing power, progressively intersecting, and embodiment two reduces power and code channel number from reducing code channel number, progressively intersecting.In actual applications, embodiment one and embodiment two can select according to the HS-DSCH sign indicating number resource and the power resource situation of sub-district, the method that adopts embodiment one to provide when cell power resource relatively nervous (generally being under the situation at macrocell); If the method that sub-district yardage fewer (generally being under the situation of Microcell) adopts embodiment two to provide.
As can be seen, method provided by the invention has realized the equilibrium of resource consumption ratio, has avoided occurring the situation of two kinds of resource consumption imbalances, has improved resource utilization, has also improved the data throughout of sub-district simultaneously.
More than purpose of the present invention, technical scheme and beneficial effect have been carried out further detailed description; institute is understood that; the above is not in order to restriction the present invention; all any modifications of being made within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. high speed down sharing channel resource distributing method, it is characterized in that, when maximum fault information that the actual waiting for sent message of user can send less than the user, intersect and progressively reduce power of high-speed downlink shared channel and code channel number, distribute power and the code channel that mates with actual waiting for sent message for the user.
2. the method for claim 1 is characterized in that, specifically comprises step:
A) power is reduced a stepping, judge whether resource satisfies actual waiting for sent message, if satisfied, execution in step B then), otherwise with stepping of back-off, and the power and the code channel that obtain distributed to the user;
B) code channel number is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step A if satisfied), otherwise with stepping of code channel number rollback, and the power and the code channel that obtain distributed to the user.
3. the method for claim 1 is characterized in that, specifically comprises step:
C) code channel number is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step D if satisfied), otherwise with stepping of code channel number rollback, and the power and the code channel that obtain distributed to the user;
D) power is reduced a stepping, judges whether resource satisfies actual waiting for sent message,, then return execution in step C if satisfied), otherwise with stepping of back-off, and the power and the code channel that obtain distributed to the user.
4. as claim 2 or 3 described methods, it is characterized in that described power stepping is 1dB.
5. as claim 2 or 3 described methods, it is characterized in that described code channel stepping is 1 code channel.
6. the method for claim 1 is characterized in that, when maximum fault information that the actual waiting for sent message of user can send more than or equal to the user, current resource is all distributed to this user.
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| CNB2006100628853A CN100411363C (en) | 2006-09-27 | 2006-09-27 | High speed down sharing channel resource distributing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004102835A1 (en) * | 2003-05-16 | 2004-11-25 | Mitsubishi Denki Kabushiki Kaisha | Base station, mobile station, communication system, and communication method |
| CN1658541A (en) * | 2004-02-17 | 2005-08-24 | 大唐移动通信设备有限公司 | Data transmission method based on high-speed down packet access |
| CN1692579A (en) * | 2002-11-20 | 2005-11-02 | 松下电器产业株式会社 | Base station apparatus and method for controlling transmission assignment |
| CN1728582A (en) * | 2004-07-27 | 2006-02-01 | 华为技术有限公司 | Method for tracking and correcting error of indication of channel quality in WCDMA system |
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- 2006-09-27 CN CNB2006100628853A patent/CN100411363C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1692579A (en) * | 2002-11-20 | 2005-11-02 | 松下电器产业株式会社 | Base station apparatus and method for controlling transmission assignment |
| WO2004102835A1 (en) * | 2003-05-16 | 2004-11-25 | Mitsubishi Denki Kabushiki Kaisha | Base station, mobile station, communication system, and communication method |
| CN1658541A (en) * | 2004-02-17 | 2005-08-24 | 大唐移动通信设备有限公司 | Data transmission method based on high-speed down packet access |
| CN1728582A (en) * | 2004-07-27 | 2006-02-01 | 华为技术有限公司 | Method for tracking and correcting error of indication of channel quality in WCDMA system |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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