CN1859064A - Method for distributing channel resources - Google Patents
Method for distributing channel resources Download PDFInfo
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- CN1859064A CN1859064A CNA2005101111125A CN200510111112A CN1859064A CN 1859064 A CN1859064 A CN 1859064A CN A2005101111125 A CNA2005101111125 A CN A2005101111125A CN 200510111112 A CN200510111112 A CN 200510111112A CN 1859064 A CN1859064 A CN 1859064A
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- channel resource
- resource allocation
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Abstract
This invention discloses a method for distributing channel resources, which considers information related to the distribution of channel resources and weights it then to compute the necessary distributed channel resource volume and realizes different distribution strategies of the channel resources by changing the weight coefficients corresponding to the information.
Description
Technical field
The present invention relates to the communications field, particularly the resource allocation of communication system.
Background technology
Channel is the requisite part of any communication system, is the passage of transmitting terminal to signal transmission between the receiving terminal.Channel in the communication system can be divided into two big classes: a class is the wireless channel that transmits information with the electromagnetic wave of free space; Another kind of is the wire message way of using the information of transmitting along the electromagnetic wave of lead.Different channels has different interference characteristics, but they all have a common feature, and promptly the capacity of any channel all is limited.
Radio communication is one of current global communications industry field active, the most with fastest developing speed, and under the promotion of market in large scale and growing application demand, radio communication constantly develops.Radio communication has satisfied the hope that people communicate with any individual at any time and any place, is the only way of realizing following personal communication service.
Radio communication is used the media of the electromagnetic wave of wireless space propagation as transmission information, and its channel is a wireless channel.External condition is very big for the properties influence of wireless channel, and influence of the Doppler frequency shift that the motion of the blocking of the variation of weather, building and mobile object, reflection and scattering process and travelling carriage causes etc. can cause the real-time change of wireless channel.Because the scarcity of the employed wireless frequency spectrum of wireless channel, the radio channel resource of any one mobile communication system is band-limited, has the characteristics of shortage of resources.In addition, because wireless frequency spectrum has not reproducible utilization, with respect to wire communication, the bandwidth cost of the wireless channel that radio communication is used is higher.Become when in a word, wireless channel has, second-rate, shortage of resources and the higher characteristics of bandwidth cost.
In order to support the multi-user to insert, just need to adopt multiple access technique that public wireless channel is divided into a plurality of channel resources that can independently use.Access mode comprises frequency division multiple access (Frequency Division Multiple Access in the radio communication, abbreviation " FDMA "), time division multiple access (TimeDivision Multiple Access, be called for short " TDMA ") and code division multiple access (Code Division MultipleAccess is called for short " CDMA ") three major types.FDMA, TDMA and CDMA frequency of utilization, time slot and code channel respectively divide wireless channel, they can use separately also and can be used in combination, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access for example, abbreviation " WCDMA ") two kinds of access modes of FDMA and CDMA have just been used in the system simultaneously, TD SDMA (Time Division Synchronous Code Division Multiple Access is called for short " TD-SCDMA ") is used FDMA, TDMA and three kinds of access modes of CDMA simultaneously.
Along with development of wireless communication devices, the business of support is also more and more, and existing real-time voice, streaming media service also have the very low data service of delay requirement; Some service bandwidth demand is relatively stable, and some business then has very strong sudden; For different business or user's request, the channel available bandwidth that system can provide also is subdivided into a plurality of grades, for example in Wideband Code Division Multiple Access (WCDMA) (WidebandCode Division Multiple Access is called for short " WCDMA ") system, channel available bandwidth grade classification is 8 kilobits per seconds (kbps), 16kbps, 32kbps, 64kbsp, 128kbps, 384kbps etc., what of needed channel resource also have nothing in common with each other.
In communication system, in general, the principle that data transmit as shown in Figure 1.Wherein, the shade square is represented packet, and dotted line is the transfer path of packet from the service source to the receiving terminal.At first, service source sends packet to transmitting terminal; Then, transmitting terminal receives packet at the buffering area buffer memory; If the channel resource of distributing to this business or connection is arranged, then packet is sent to receiving terminal on the channel resource that distributes; Then, receiving terminal carries out verification with whether wrong generation in the specified data packet transfer procedure to the packet that receives; Then, receiving terminal to transmitting terminal feedback acknowledgment information, illustrates which packet correctly arrives according to check results, which packet generation error of transmission or lose; At last, transmitting terminal is according to the affirmation information of receiving terminal feedback, and decision is to losing or error data packets retransmits or send new packet.Wherein, the operating position of channel resource also has nothing in common with each other in different communication systems, and in some communication system, each user distributes fixing channel resource; In some communication system, a plurality of users share identical channel resource.
The communication system that characteristics that become when being similar to the such channel of wireless communication system and having and channel resource are shared into a plurality of users for the user of bad channel conditions, if distribute more channel resource, only can worsen communication link quality, and the waste resource; And,, then can not satisfy user's satisfaction if can not distribute enough channel resources for the good user of channel condition.Need a kind of method of channel resource allocation, make the distribution of channel resource fully adapt to bandwidth demand, can satisfy the demands, also do not waste, to guarantee the correct utilization of channel resource.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of channel resource allocation, makes communication system allocation of channel resources may neatly.
For achieving the above object, the invention provides a kind of method of channel resource allocation, comprise following steps:
A obtains the information relevant with channel resource allocation;
B is weighted to handle to described information and obtains weighted information;
C calculates the channel resource amount that needs distribution according to described weighted information, and by result of calculation notice relevant device allocation of channel resources may.
Wherein, the described information relevant with channel resource allocation comprises one of following or its combination in any: channel quality, buffering area data volume to be sent, channel resource utilance.
In this external described method, the weight coefficient of described information correspondence is variable during weighted.
In this external described method, among the described step B2, described weighted information addition needing to be obtained the described channel resource amount of distribution.
In this external described method, obtain the described information relevant with channel resource allocation by periodic statistics.
In this external described method, periodically carry out described steps A, B and C.
In addition, described method is applied to wireless communication system.
In this external described method, described wireless communication system comprises broadband CDMA system.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, take all factors into consideration the information relevant with channel resource allocation, and these information are weighted handle the back and calculate the channel resource amount of distributing of needing, can also realize different channel resource allocation strategies by the weight coefficient that changes these information correspondences.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly at first, the allocative decision of the present invention program's channel resource considers that buffering area data volume to be sent, retransmission rate etc. influence the factor of system throughput, guaranteed effective utilization of system channel resource, can effectively improve the throughput of system, be equivalent to the construction cost that has reduced network.
The second, the present invention program considers the factor of channel quality, can adjust channel resource allocation according to channel quality, has avoided the not enough or waste of channel resource allocation, can satisfy different business or user's transmission quality demand simultaneously better.
The 3rd, the present invention program can adjust the strategy of channel resource allocation neatly, can between user satisfaction and throughput of system, obtain good balance according to the different business needs, the business of can effectively predicting makes that to the channel resource demand under current communication condition the distribution of channel resource is more scientific and reasonable.
Description of drawings
Fig. 1 is the schematic diagram that data transmit principle in the communication system;
Fig. 2 is the flow process of the channel resource allocation of first better embodiment according to the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention program is the information relevant with channel resource allocation in the obtaining communication system at first, and these information are weighted handle the back and calculate the channel resource amount of distributing of needing.Can be weighted the channel resource amount that the back addition calculation need be distributed to these information.
The information relevant with channel resource allocation comprises: channel quality, buffering area data volume to be sent and channel resource utilance etc.Can calculate the channel resource amount that needs distribute according to one of any of these information or their combination in any.
For can be at different business demands and different channel resource allocation policy-flexible ground allocation of channel resources may, the weight coefficient of channel resource allocation relevant information be variable.
For clearer explanation the present invention program, describe below in conjunction with better embodiment of the present invention and accompanying drawing.
The flow process of the channel resource allocation of first preferred embodiment as shown in Figure 2 according to the present invention.This preferred embodiment realizes in wireless communication system.
At first enter step 210, obtain the information relevant with channel resource allocation.Wherein, the information relevant with channel resource allocation can be channel quality, buffering area data volume to be sent and channel resource utilance etc.
Those of ordinary skill in the art understand, in order to reach identical data throughput, poor more in the condition lower channel quality of same channel resource, the ratio that then retransmits is big more, in requisition for the channel resource amount many more, so channel quality and channel resource allocation have substantial connection.Re-transmission may be to confirm overtime or make mistakes to cause, its direct respective channels quality, in the present invention's first preferred embodiment, channel quality can obtain by affirmation in statistics a period of time and retransmission information, for example, can use Radio Link control (Radio LinkControl, abbreviation " RLC ") retransmission rate of data link layer, 200% equivalence for example, measurement as channel quality, the big more channel quality that then illustrates of retransmission rate is poor more, and is many more in order to reach the needed channel resource amount of identical data throughput.Need to prove, channel quality also can not use retransmission rate, and obtain by measurement, for example also can use the equal value representation channel quality of the Interference Signal Code Power (Interference Signal CodePower is called for short " ISCP ") in a period of time.
Those of ordinary skill in the art also is appreciated that, also there are correlation in buffering area outgoing data amount and the channel resource amounts that the whole once transmissions of these outgoing data are needed, when other conditionally completes such as channel quality are identical, the channel resource amount of data volume that can once send and distribution is directly proportional, in the present invention's first preferred embodiment, the mean value that uses a period of time internal buffer outgoing data amount is as one of relevant information of channel resource allocation, and its unit is byte (BYTE).
The channel resource utilance has reflected the operating position of the channel resource that distributes, because service needed, sometimes the channel resource of Fen Peiing does not need to use fully, therefore when the subsequent communication channel resource allocation, can adjust the channel resource that needs distribute according to the situation of channel resource utilance.
In the present invention's first preferred embodiment, channel quality, buffering area data volume to be sent and channel resource utilance are obtained by periodic statistics, its measurement period can be identical with the cycle that channel resource heavily distributes, and for example can per 400 milliseconds (ms) carries out the statistics of channel quality, buffering area data volume to be sent and a channel resource utilance and carry out channel resource in view of the above and heavily distribute.
Then enter step 220, the information that weighted is relevant with channel resource allocation is carried out and is calculated the channel resource amount that needs distribution, and by result of calculation notice relevant device allocation of channel resources may.In the present invention's first preferred embodiment, draw the channel resource amount that needs distribution by the information relevant with channel resource allocation being weighted the back summation.For example, three kinds of information A relevant with channel resource allocation, B and C are arranged, when not considering other difference, they become to be similar to proportional relation with the channel resource amount of needs respectively, can use the channel resource amount R that formula (1) is calculated needs distribution.
R=w
aA+w
bB+w
cC ... formula (1)
In the present invention's first preferred embodiment, A, B and C be corresponding retransmission rate, buffering area data volume to be sent and channel resource utilance respectively, w
a, w
bAnd w
cThen correspond respectively to A, the weight coefficient of B and C.Those of ordinary skill in the art understands, and by adjusting weight coefficient, can adjust the significance level of each information in the channel resource allocation strategy, and also can determine whether to use such information.By different combinations, can set different strategies.
On the basis of the present invention's first preferred embodiment, in the present invention's second preferred embodiment, the channel allocation strategy is only considered channel quality, weight coefficient w
bAnd w
cAll get 0.
Equally, on the basis of the present invention's first preferred embodiment, in the present invention's the 3rd preferred embodiment, the channel allocation strategy is only considered buffering area outgoing data amount, weight coefficient w
aAnd w
cValue is 0.
Further, in the present invention's the 4th preferred embodiment, consider retransmission rate, buffering area data volume to be sent and channel resource utilance simultaneously, w
a, w
bAnd w
cConcrete value in the actual use of system, debug acquisition.
Those of ordinary skill in the art are appreciated that, the channel resource that can use other computational methods utilization information calculations relevant to distribute with channel resource allocation, for example, the information relevant with channel resource allocation can be multiplied each other and the operation of weighting needs the channel resource that distributes to calculate, for another example, the same use when information relevant with channel resource allocation is calculated in the present invention's first preferred embodiment, can use the channel resource that formula (2) is calculated needs distribution, this does not influence essence of the present invention yet.
R=w
cC (w
aA+w
bB) ... formula (2)
Of particular note, though above-mentioned preferred embodiment realizes that in wireless communication system the present invention goes for any communication system, do not limit to be confined to wireless communication system.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. the method for a channel resource allocation is characterized in that, comprises following steps:
A obtains the information relevant with channel resource allocation;
B is weighted to handle to described information and obtains weighted information;
C calculates the channel resource amount that needs distribution according to described weighted information, and by result of calculation notice relevant device allocation of channel resources may.
2. the method for channel resource allocation according to claim 1 is characterized in that, the described information relevant with channel resource allocation comprises one of following or its combination in any: channel quality, buffering area data volume to be sent, channel resource utilance.
3. the method for channel resource allocation according to claim 1 is characterized in that, the weight coefficient of described information correspondence is variable during weighted.
4. the method for channel resource allocation according to claim 1 is characterized in that, among the described step B2, described weighted information addition needing to be obtained the described channel resource amount of distribution.
5. the method for channel resource allocation according to claim 1 is characterized in that, obtains the described information relevant with channel resource allocation by periodic statistics.
6. the method for channel resource allocation according to claim 1 is characterized in that, periodically carries out described steps A, B and C.
7. according to the method for each described channel resource allocation in the claim 1 to 6, it is characterized in that described method is applied to wireless communication system.
8. the method for channel resource allocation according to claim 7 is characterized in that, described wireless communication system comprises broadband CDMA system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101111125A CN1859064A (en) | 2005-12-02 | 2005-12-02 | Method for distributing channel resources |
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|---|---|---|---|
| CNA2005101111125A CN1859064A (en) | 2005-12-02 | 2005-12-02 | Method for distributing channel resources |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309130B (en) * | 2007-05-15 | 2011-07-27 | 索尼株式会社 | Wireless communication apparatus and method |
| CN102143587A (en) * | 2010-12-31 | 2011-08-03 | 华为技术有限公司 | Resource-allocating method and equipment |
| CN108124313A (en) * | 2016-11-30 | 2018-06-05 | 大唐移动通信设备有限公司 | A kind of resource allocation methods and base station |
| CN114465903A (en) * | 2021-12-29 | 2022-05-10 | 湖南红鑫通信技术有限责任公司 | Management system and method for improving maximum normalized throughput of wireless optical communication network |
-
2005
- 2005-12-02 CN CNA2005101111125A patent/CN1859064A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309130B (en) * | 2007-05-15 | 2011-07-27 | 索尼株式会社 | Wireless communication apparatus and method |
| CN102143587A (en) * | 2010-12-31 | 2011-08-03 | 华为技术有限公司 | Resource-allocating method and equipment |
| CN108124313A (en) * | 2016-11-30 | 2018-06-05 | 大唐移动通信设备有限公司 | A kind of resource allocation methods and base station |
| CN108124313B (en) * | 2016-11-30 | 2020-12-04 | 大唐移动通信设备有限公司 | Resource allocation method and base station |
| CN114465903A (en) * | 2021-12-29 | 2022-05-10 | 湖南红鑫通信技术有限责任公司 | Management system and method for improving maximum normalized throughput of wireless optical communication network |
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Open date: 20061108 |