CN101888646B - Method and system for acquiring feedback information of channel quality and base station - Google Patents
Method and system for acquiring feedback information of channel quality and base station Download PDFInfo
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- CN101888646B CN101888646B CN 200910084012 CN200910084012A CN101888646B CN 101888646 B CN101888646 B CN 101888646B CN 200910084012 CN200910084012 CN 200910084012 CN 200910084012 A CN200910084012 A CN 200910084012A CN 101888646 B CN101888646 B CN 101888646B
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Abstract
The invention relates to the field of mobile communication, in particular to technology for feeding back channel quality to a base station by using a mobile terminal. The invention provides a method and a system for acquiring feedback information of channel quality and a base station. The method comprises the following steps that: the base station receives frequency band supporting capacity information reported by the mobile terminal; according to the received frequency band supporting capacity information, the base station determines frequency band feedback indication information and transmits the frequency band feedback indication information to the mobile terminal; and the base station a channel quality measuring result fed back by the mobile terminal according to the frequency band feedback indication information. Based on the frequency supporting capacity reported by the terminal and the current network frequency band resources, the base station determines that the terminal reports the channel quality of which frequency band or frequency bands and indicates the mobile terminal in the frequency band feedback indication information, so that the channel quality of part of frequency band intercarrier/resource block supported by the mobile can be acquired pertinently, the scheduling flexibility is improved, and the expenditure of the terminal side is saved.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to portable terminal to the technology of base station feedback channel quality.
Background technology
Portable terminal needs regular base station transmitting channel feedback information to network side, the communication channel quality situation between reflect mobile terminal and the base station; The macroscopic view scheduling can be carried out at network side according to the portable terminal feedack in the base station, to reach purposes such as improving the availability of frequency spectrum, equally loaded.
The channel quality feedback information of present portable terminal, the general quality of only having fed back the channel of the maximum supported bandwidth of single carrier wave in the single working frequency range.Yet present portable terminal can be worked simultaneously by a plurality of carrier channels in the single working frequency range, perhaps works simultaneously by a plurality of carrier waves in a plurality of frequency ranges; For these portable terminals, above channel feedback information can not reflect the quality of interior other carrier channel of single working frequency range that this portable terminal is worked simultaneously, the perhaps quality of the carrier channel in other frequency range; Network side also just can not be grasped the quality condition of the carrier channel that portable terminal works simultaneously, and therefore, the scheduling behavior that this has limited network side to a great extent is unfavorable for giving full play to frequency diversity gain, just is unfavorable for that also network side takes full advantage of Radio Resource.
If portable terminal all feeds back for all the carrier wave/Resource Block in the frequency range of its all supports, this amount of overhead and power consumption are again that terminal can not be born.
Therefore, the channel quality feedback method that provides of prior art can't be taken into account the expense of end side and the resource of network side takes full advantage of.
Summary of the invention
The embodiment of the invention provides a kind of acquiring feedback information of channel quality, system and base station, with so that terminal can be fed back the quality of local channel in the channel of its support, thus not only saved terminal amount of overhead but also so that network side can be according to the channel quality flexible dispatching of feedback, take full advantage of Radio Resource.
A kind of acquiring feedback information of channel quality comprises:
The frequency range tenability information that the base station mobile terminal receive reports; And
According to the frequency range tenability information and the current network resource of frequency range that receive, to determine to send to described portable terminal behind the frequency range feedback indication information, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Described base station receives the channel quality measurements that described portable terminal feeds back according to described frequency range feedback indication information.
After determining the frequency range feedback indication information of described portable terminal, also comprise:
Described base station is according to the correlation bandwidth of the down channel of each feedback frequency range, determine the feedback granularity indication information of this feedback frequency range, and with each the feedback frequency range feedback granularity indication information send to described portable terminal, described feedback frequency range refers to the frequency range of the described portable terminal feedback channel quality of described frequency range feedback indication information indicating, the granularity size of described feedback granularity indication information in order to indicate described portable terminal to feed back in correspondence feedback frequency range.
A kind of channel quality feedback information obtains system, comprising:
Portable terminal is used for reporting frequency range tenability information;
The base station, be used for according to the frequency range tenability information and the current network resource of frequency range that report, determine to send to described portable terminal behind the frequency range feedback indication information, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Described portable terminal is according to the channel quality of described frequency range feedback indication information measurement corresponding frequency band, and the feedback channel quality measurement result;
Described base station receives the channel quality measurements of described portable terminal feedback.
A kind of base station comprises:
The frequency range tenability obtains module, is used for obtaining the frequency range tenability information of mobile terminal reporting;
Frequency range feedback indication information determination module, be used for according to described frequency range tenability information and the current network resource of frequency range, determine the frequency range feedback indication information of described portable terminal, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Feedback indication information sending module is used for sending described frequency range feedback indication information to described portable terminal;
Measurement result obtains module, is used for obtaining the channel quality measurements that described portable terminal feeds back according to described frequency range feedback indication information.
The base station of the embodiment of the invention is owing to the frequency range tenability according to terminal to report, and in conjunction with the current network resource of frequency range, decide the channel quality of terminal to report which or which frequency range, and in frequency range feedback indication information, terminal is indicated, thereby can obtain targetedly the channel quality of band segment intercarrier/Resource Block that terminal supports, provide reference for network side carries out scheduling of resource, help to improve the flexibility of scheduling, save the Radio Resource of network side; Simultaneously end side also need not be to all frequency range feedback channel quality information, saved the expense of end side; Thereby reach the amount of overhead of not only having saved terminal but also so that network side can carry out flexible dispatching according to the channel quality of feedback, take full advantage of the purpose of network radio resources.
Description of drawings
Fig. 1 a is the channel quality information feedback method flow chart of the embodiment of the invention;
Fig. 1 b is the method flow diagram that the base station of the embodiment of the invention obtains the down channel correlation bandwidth of mobile terminal reporting;
Fig. 2 is the inside of base station structured flowchart of the embodiment of the invention;
Fig. 3 is the granularity feedback indication information determination module internal structure block diagram of the embodiment of the invention.
Embodiment
The base station of the embodiment of the invention in conjunction with the current network resource of frequency range, is terminal configuration frequency range feedback indication information according to the frequency range ability of supporting of terminal to report, and this information is in order to the channel quality of indicating terminal to report which or which frequency range; Terminal is carried out channel quality measurement and is fed back measurement result (being channel quality information) band segment intercarrier/Resource Block according to the configuration of base station.Thereby network side can require according to the loading condition of network side the channel quality information of terminal feedback corresponding band to carry out the Radio Resource of flexible dispatching, saving network side, simultaneously end side also need not be to all frequency range feedback channel quality information, saved the expense of end side, reach the amount of overhead of not only having saved terminal but also so that network side can be according to the channel quality flexible dispatching of feedback, take full advantage of the purpose of network radio resources.
Describe the concrete technical scheme of the embodiment of the invention in detail below in conjunction with accompanying drawing.
A kind of channel quality feedback information acquisition system that the embodiment of the invention provides comprises base station and portable terminal, and wherein, portable terminal carries out the method flow diagram of channel quality information feedback to the base station, as shown in Figure 1a, comprises following concrete steps:
S101, portable terminal report this terminal to support to the base station frequency range ability.
For example, mobile LTE TDD Band 34 (2010-2025MHz), Band 39 (1880-1920MHz), Band 40 (2300-2400MHz) frequency range supported, or the carrier number of work when when terminal is supported carrier aggregation, on each frequency range, supporting, support simultaneously the work of three continuous 20MHz carrier waves such as Band 40.Portable terminal can be carried at the information of the frequency range ability of its support in the band support tabulation and send to the base station.
The frequency range feedback indication information that portable terminal is determined according to frequency range ability and the current network resource of frequency range of the support of mobile terminal reporting in S102, base station.
The base station can be in conjunction with the information of the frequency range ability of its support of mobile terminal reporting and the frequency range feedback indication information of current network resource of frequency range configuration portable terminal, and this frequency range feedback indication information feeds back channel quality on which or which frequency range in order to indicating mobile terminal.Concrete, the current network resource of frequency range can be that the base station is determined according to this residential quarter frequency range tenability, perhaps determines that according to current loading condition on each frequency range perhaps comprehensive both of these case is determined.Further, the current network resource of frequency range can also be determined according to the frequency range of neighbor cell configuration in the base station.For example, portable terminal is supported LTE TDD Band 34 (2010-2025MHz), Band 39 (1880-1920MHz), Band 40 (2300-2400MHz), Band 34 (2010-2025MHz), Band 39 (1880-1920MHz), Band40 (2300-2400MHz) also can be supported in the base station, but Band 39 is in the heavy duty situation at present, and in Neighboring Cell List, recorded the frequency range of Band 34 for the neighbor cell configuration, then only feedback channel quality information on Band 40 of this terminal is determined in the base station.
Further, be concrete some or a plurality of feedback frequency ranges (frequency range that this paper carries out the base station indicating mobile terminal channel-quality feedback is referred to as the feedback frequency range) of terminal configuration for the base station, feedback granularity indication information on the frequency range can also respectively be fed back for mobile terminal configuration in the base station, the granularity size that feedback granularity indication information feeds back in each feedback frequency range in order to indicating mobile terminal.Be specially, the base station can dispose according to the correlation bandwidth of the down channel of the feedback frequency range under the wireless environment feedback granularity indication information of this feedback frequency range; For example, if be operated in the terminal of 2300-2400MHz frequency range for certain, the correlation bandwidth of down channel can be determined according to certain method in the base station, and such as 1MHz, system bandwidth is 20MHz, and the base station can be configured to 2MHz with the feedback granularity of this terminal.In general, the feedback granularity is greater than correlation bandwidth, otherwise the feedback granularity is too accurate, will greatly increase up expense and terminal power consumption.In addition, can also consider feedback overhead and the power consumption of terminal, decide the size of feedback granularity.Can according to the more pre-defined typical granularity sizes of system bandwidth, utilize less bit resource indication feedback granularity size.
For TDD (Time Division Duplex, time division duplex) system, because uplink and downlink works is in same frequency range, has channel reciprocity, the correlation bandwidth that can be equivalent to down channel according to the correlation bandwidth of the pilot signal of up channel corresponding to feedback frequency range or the up channel that reference signal estimates, therefore, after the base station can estimate correlation bandwidth according to ascending pilot frequency/reference signal, directly determine the correlation bandwidth of down channel and then the feedback granularity indication information of definite portable terminal according to this correlation bandwidth that estimates; In addition, the TDD system also can obtain by the method for mobile terminal reporting the down channel correlation bandwidth (the method will in follow-up detailed introduction) of required feedback frequency range.
The correlation bandwidth that up channel is estimated according to pilot signal or the reference signal of up channel corresponding to feedback frequency range in the base station, specifically can be, draw the root mean square rms of up channel multidiameter delay according to the channel estimation results of uplink pilot signal or reference signal, utilize rms to calculate correlation bandwidth.For example, be 0.9 correlation bandwidth band_1 and 0.5 correlation bandwidth band_2 for correlation function, can calculate according to following formula 2,3 respectively:
band_1＝0.02/rms (2)
band_2＝0.09/rms (3)
For FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) system, because uplink and downlink works is at different frequency range, do not possess channel reciprocity, the correlation bandwidth that estimates according to ascending pilot frequency/reference signal and the correlation bandwidth of down channel generally have than big difference, therefore, the feedback granularity indication information that the correlation bandwidth that directly estimates according to ascending pilot frequency/reference signal is determined may be inaccurate, can adopt so following two kinds of methods to obtain the correlation bandwidth of down channel: the first is according to predefined modifying factor, basis is estimated the correlation bandwidth that obtains down channel after correlation bandwidth is revised in up channel pilot tone/reference signal, for example, can draw in the superior modifying factor in up correlation bandwidth basis the correlation bandwidth of down channel, modifying factor can draw by training; It two is the correlation bandwidth (the method will in follow-up detailed introduction) of the down channel of notice mobile terminal reporting feedback frequency range.
S103, base station send to portable terminal with the frequency range feedback indication information of configuration.
The base station sends to portable terminal with information after having determined the frequency range feedback indication information of portable terminal; Further, if described in base station such as the step S102 also for mobile terminal configuration respectively feed back feedback granularity indication information on the frequency range, then the base station can also send to portable terminal with the feedback granularity indication information that respectively feeds back on the frequency range of configuration.
S104, portable terminal are measured the channel quality of corresponding band according to the frequency range feedback indication information that receives.
Portable terminal is measured the channel quality of corresponding band after receiving frequency range feedback indication information.For example, the base station sends to the parameter of frequency range feedback indication information for feeding back at frequency range Band 40 of portable terminal, then portable terminal is measured (such as the signal to noise ratio of measuring channel, signal to noise ratio has reflected the quality of channel) to the channel quality of measuring on the frequency range Band 40.
Further, if the base station has also sent the feedback granularity indication information that respectively feeds back on the frequency range to portable terminal, then portable terminal also according to the feedback granularity indication information on each feedback frequency range, carries out channel quality measurement.For example, the granularity of feeding back in the 2300-2400MHz frequency range when the base station indicating terminal is the words that every 5MHz reports a channel quality information, then terminal is according to this granularity indication information, 100MHz bandwidth on this frequency range is divided into 20 frequency chunks, carries out channel quality measurement for each frequency chunks.
S105, portable terminal are to base station reporting measurement result.
Report to the base station at portable terminal after the measurement result of each feedback frequency range, the base station can determine with reference to the channel quality measurements of mobile terminal reporting the scheduling of network side resource.
Report to the base station at portable terminal before measurement result of each feedback frequency range, portable terminal can also carry out smoothing processing on time domain or the frequency domain to measurement result; Perhaps, smoothing processing on time domain or the frequency domain is carried out to measurement result after receiving the measurement result of each feedback frequency range of mobile terminal reporting in the base station; Thereby reduce rapid fading and bursty interference to the impact of measurement result, raising reports precision, perhaps reduces reporting expense.Specifically can adopt following smoothing processing method:
Method one: time domain smoothing processing
Can utilize the forgetting factor method that the measurement result on the different time points is carried out smoothing processing.For example, adopt formula 1 to obtain level and smooth result:
RS(n)＝α·RS(n-1)+(1-α)·RS(n) (1)
Wherein, RS (n) is portable terminal to certain or some RB (Resource block, Resource Block) or carrier wave when time measurement result, RS (n) is the level and smooth effective value that when inferior measurement result carry out smoothing processing after obtain of portable terminal to certain or some RB (or carrier wave), RS (n-1) carries out the level and smooth effective value that obtains after the smoothing processing, weighted factor and 0≤α≤1 of α for arranging for portable terminal to the front measurement result of certain or some RB (or carrier wave).If because of the factors such as interference cause when time measurement result excessive or too small, so by such smoothing processing, can so that when time measurement result closer to a rational measurement result scope, thereby reduce rapid fading and bursty interference to the impact of measurement result.
Method two:
The different RB that Frequency Fading Properties can be associated or the measurement result on the carrier wave average, the measurement result after processing as frequency domain smoothing.If the smoothing processing of frequency domain was carried out before the reporting measurement result by portable terminal, the measurement result that the measurement result after then portable terminal can be processed frequency domain smoothing substitutes a plurality of RB or carrier wave reports, thereby reduces the expense of feedback resources.
The concrete grammar of the correlation bandwidth of the base station notice mobile terminal reporting down channel of mentioning among the above-mentioned steps S102, flow chart comprises following concrete steps shown in Fig. 1 b:
S110, base station send the indication that reports down channel correlation bandwidth to portable terminal.
S111, portable terminal are estimated the channel multi-path time delay according to down channel pilot tone or reference signal in the regular hour window according to the indication that the base station sends.
S112, portable terminal calculate down channel correlation bandwidth according to the down channel multidiameter delay of estimating.
Specifically can be that portable terminal calculates correlation bandwidth according to the root mean square rms of the down channel multidiameter delay of estimating.For example, be 0.9 correlation bandwidth band_1 and 0.5 correlation bandwidth band_2 for correlation function, can calculate according to following formula 4,5 respectively:
band_1＝0.02/rms (4)
band_2＝0.09/rms (5)
S113, portable terminal report the correlation bandwidth of the down channel of calculating to the base station.
Thereby the base station can be mobile terminal configuration feedback granularity indication information according to the correlation bandwidth of the down channel that reports.
Above-mentioned channel-quality feedback step S101-S105 both can be periodically to carry out also can right and wrong to carry out periodically, can be configured by the base station.If periodically carry out, then channel quality feedback cycles can to carry out cycle of scheduling of resource consistent or inconsistent with base station side, and generally speaking, feedback cycle can be longer than dispatching cycle.
Although it will be understood by those skilled in the art that in the above-mentioned explanation, for ease of understanding, the step of method has been adopted the succession description, should be pointed out that for the order of above-mentioned steps and do not do strict restriction.
A kind of base station that the embodiment of the invention provides, its internal structure block diagram comprises as shown in Figure 2: the frequency range tenability obtains module 201, frequency range feedback indication information determination module 202, feedback indication information sending module 203, measurement result acquisition module 204.
The frequency range tenability obtains module 201 in order to obtain the frequency range tenability of mobile terminal reporting.
Frequency range feedback indication information determination module 202 is in order to the frequency range tenability that obtains module 201 acquisitions according to the frequency range tenability and the frequency range feedback indication information that the current network resource of frequency range is determined described portable terminal, and described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band.Described in the concrete grammar such as front step S102 of frequency range feedback indication information determination module 202 definite frequency range feedback indication informations, repeat no more herein.
Feedback indication information sending module 203 is used for sending the frequency range feedback indication information that frequency range feedback indication information determination module 202 is determined to described portable terminal.
Measurement result obtains module 204 and is used for obtaining the channel quality measurements that described portable terminal feeds back according to described frequency range feedback indication information.
Further, the base station also comprises: granularity feedback indication information determination module 205.
The correlation bandwidth that granularity feedback indication information determination module 205 is used for according to the down channel of each feedback frequency range, determine the feedback granularity indication information of this feedback frequency range, described feedback frequency range refers to the frequency range of the described portable terminal feedback channel quality of described frequency range feedback indication information indicating, the granularity size of described feedback granularity indication information in order to indicate described portable terminal to feed back in correspondence feedback frequency range.Described in the concrete grammar such as abovementioned steps S102 of granularity feedback indication information determination module 205 definite feedback granularity indication informations, repeat no more herein.
And feedback indication information sending module 203 also is used for sending the feedback granularity indication information that respectively feeds back frequency range that granularity feedback indication information determination module 205 is determined.
As shown in Figure 3, granularity feedback indication information determination module 205 specifically can comprise: descending correlation bandwidth determining unit 301 and granularity feedback indication information determining unit 302.
Descending correlation bandwidth determining unit 301 is used for the correlation bandwidth of the down channel of definite each feedback frequency range;
Granularity feedback indication information determining unit 302 is used for the correlation bandwidth definite according to described descending correlation bandwidth determining unit, determines the feedback granularity indication information of corresponding feedback frequency range.
Wherein, descending correlation bandwidth determining unit 301 specifically can be the correlation bandwidth according to the up channel pilot tone of described feedback frequency range or up channel reference signal estimation up channel, determines the correlation bandwidth of the down channel of described feedback frequency range according to the correlation bandwidth of described up channel.Determine the method for down channel correlation bandwidth according to up channel correlation bandwidth, in abovementioned steps S102, introduce, repeat no more herein.
Perhaps, descending correlation bandwidth determining unit 301 specifically can be to notify the correlation bandwidth of the down channel of the described feedback frequency range of described mobile terminal reporting; And with the correlation bandwidth of the down channel of described mobile terminal reporting, as the correlation bandwidth of the down channel of described feedback frequency range.
Further, the base station can also comprise: measurement result processing module 206.
Measurement result processing module 206 is used for the channel quality measurements that measurement result acquisition module 204 obtains is carried out the smoothing processing of time domain or frequency domain.The smoothing processing concrete grammar of time domain or frequency domain can as introducing among the step S105, repeat no more herein.
The base station of the embodiment of the invention is owing to the frequency range tenability according to terminal to report, and in conjunction with the current network resource of frequency range, decide the channel quality of terminal to report which or which frequency range, and in frequency range feedback indication information, terminal is indicated, thereby can obtain targetedly the channel quality of band segment intercarrier/Resource Block that terminal supports, provide reference for network side carries out scheduling of resource, help to improve the flexibility of scheduling, save the Radio Resource of network side; Simultaneously end side also need not be to all frequency range feedback channel quality information, saved the expense of end side; Thereby reach the amount of overhead of not only having saved terminal but also so that network side can carry out flexible dispatching according to the channel quality of feedback, take full advantage of the purpose of network radio resources.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, this program can be stored in the computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
Will also be appreciated that the apparatus structure shown in accompanying drawing or the embodiment only is schematically, the presentation logic structure.The module that wherein shows as separating component may or may not be physically to separate, and the parts that show as module may be or may not be physical modules.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (17)
1. an acquiring feedback information of channel quality is characterized in that, comprising:
The frequency range tenability information that the base station mobile terminal receive reports; And
According to the frequency range tenability information and the current network resource of frequency range that receive, to determine to send to described portable terminal behind the frequency range feedback indication information, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Described base station receives the channel quality measurements that described portable terminal feeds back according to described frequency range feedback indication information;
After determining the frequency range feedback indication information of described portable terminal, also comprise:
Described base station is according to the correlation bandwidth of the down channel of each feedback frequency range, determine the feedback granularity indication information of this feedback frequency range, and with each the feedback frequency range feedback granularity indication information send to described portable terminal, described feedback frequency range refers to the frequency range of the described portable terminal feedback channel quality of described frequency range feedback indication information indicating, the granularity size of described feedback granularity indication information in order to indicate described portable terminal to feed back in correspondence feedback frequency range; And
Described channel quality measurements is that described portable terminal feeds back with each feedback granularity indication information that feeds back frequency range according to described frequency range feedback indication information.
2. the method for claim 1 is characterized in that, the correlation bandwidth of the down channel of described feedback frequency range is specifically determined according to following method:
The correlation bandwidth that up channel is estimated according to pilot signal or the reference signal of up channel corresponding to described feedback frequency range in described base station; And
Determine the correlation bandwidth of the down channel of described feedback frequency range according to the correlation bandwidth of described up channel.
3. method as claimed in claim 2 is characterized in that, the described correlation bandwidth of estimating up channel according to pilot signal or the reference signal of up channel corresponding to described feedback frequency range specifically comprises:
The multidiameter delay that up channel is estimated according to pilot signal or the reference signal of up channel corresponding to described feedback frequency range in the base station;
The correlation bandwidth of up channel is calculated in the base station according to the up channel multidiameter delay.
4. method as claimed in claim 2 is characterized in that, described correlation bandwidth according to described up channel is determined the correlation bandwidth of the down channel of described feedback frequency range, specifically comprises:
With the value of the correlation bandwidth of the described up channel value as the correlation bandwidth of described down channel; Perhaps
According to predefined modifying factor, after the correlation bandwidth do correction to described up channel, with the correlation bandwidth of revised correlation bandwidth as described down channel.
5. the method for claim 1 is characterized in that, the correlation bandwidth of the down channel of described feedback frequency range is specifically determined according to following method:
The correlation bandwidth of the down channel of the described feedback frequency range of described mobile terminal reporting is notified in the base station;
Described portable terminal is estimated the multidiameter delay of down channel according to the notice of described base station according to pilot signal or the reference signal of down channel, and determines according to the down channel multidiameter delay to report after the correlation bandwidth of down channel;
Described base station is the correlation bandwidth of the down channel of described mobile terminal reporting, as the correlation bandwidth of the down channel of described feedback frequency range.
6. such as the arbitrary described method of claim 1-5, it is characterized in that described base station also comprises after receiving the channel quality measurements of the corresponding frequency band that described portable terminal feeds back according to described frequency range feedback indication information:
Described channel quality measurements is carried out the smoothing processing of time domain or frequency domain.
7. such as the arbitrary described method of claim 1-5, it is characterized in that described portable terminal specifically refers to according to the channel quality measurements that described frequency range feedback indication information feeds back:
Described portable terminal carries out the channel quality measurement of corresponding frequency band according to described frequency range feedback indication information, and with the channel quality measurements of each frequency range channel quality measurements as feedback; Perhaps
Described portable terminal is according to described frequency range feedback indication information, carry out the channel quality measurement of corresponding frequency band, after the channel quality measurements of each frequency range carried out the smoothing processing of time domain or frequency domain, will be through the measurement result of the smoothing processing channel quality measurements as feedback.
8. such as the arbitrary described method of claim 1-5, it is characterized in that the described current network resource of frequency range is determined according to current loading condition on this residential quarter frequency range tenability and/or each frequency range.
9. method as claimed in claim 8 is characterized in that, the described current network resource of frequency range is also further determined according to the frequency range of neighbor cell configuration.
10. a channel quality feedback information obtains system, it is characterized in that, comprising:
Portable terminal is used for reporting frequency range tenability information;
The base station, be used for according to the frequency range tenability information and the current network resource of frequency range that report, determine to send to described portable terminal behind the frequency range feedback indication information, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Described portable terminal is according to the channel quality of described frequency range feedback indication information measurement corresponding frequency band, and the feedback channel quality measurement result;
Described base station receives the channel quality measurements of described portable terminal feedback;
Described base station also is used for the correlation bandwidth according to the down channel of each feedback frequency range, determine the feedback granularity indication information of this feedback frequency range, and with each the feedback frequency range feedback granularity indication information send to described portable terminal, described feedback frequency range refers to the frequency range of the described portable terminal feedback channel quality of described frequency range feedback indication information indicating, the granularity size of described feedback granularity indication information in order to indicate described portable terminal to feed back in correspondence feedback frequency range; And
Described portable terminal also carries out described measurement according to described feedback granularity indication information.
11. system as claimed in claim 10 is characterized in that,
Described base station also is used to indicate the correlation bandwidth of the down channel of the described feedback frequency range of described mobile terminal reporting; And
Described portable terminal reports the correlation bandwidth of described down channel according to described indication;
Described base station is the correlation bandwidth of the down channel of described mobile terminal reporting, as the correlation bandwidth of the down channel of described feedback frequency range.
12. such as the arbitrary described system of claim 10-11, it is characterized in that,
Described base station also is used for described channel quality measurements is carried out the smoothing processing of time domain or frequency domain.
13. such as the arbitrary described system of claim 10-11, it is characterized in that,
Described portable terminal is also for after measuring the channel quality of corresponding frequency band according to described frequency range feedback indication information, the channel quality measurements of each frequency range is carried out the smoothing processing of time domain or frequency domain, will feed back as the channel quality measurements of feedback through the measurement result of smoothing processing.
14. a base station is characterized in that, comprising:
The frequency range tenability obtains module, is used for obtaining the frequency range tenability information of mobile terminal reporting;
Frequency range feedback indication information determination module, be used for according to described frequency range tenability information and the current network resource of frequency range, determine the frequency range feedback indication information of described portable terminal, described frequency range feedback indication information is in order to indicate the channel quality of described portable terminal feedback corresponding frequency band;
Feedback indication information sending module is used for sending described frequency range feedback indication information to described portable terminal;
Measurement result obtains module, is used for obtaining the channel quality measurements that described portable terminal feeds back according to described frequency range feedback indication information;
Also comprise:
Granularity feedback indication information determination module, be used for the correlation bandwidth according to the down channel of each feedback frequency range, determine the feedback granularity indication information of this feedback frequency range, described feedback frequency range refers to the frequency range of the described portable terminal feedback channel quality of described frequency range feedback indication information indicating, the granularity size of described feedback granularity indication information in order to indicate described portable terminal to feed back in correspondence feedback frequency range; And
Described feedback indication information sending module also is used for sending the feedback granularity indication information that respectively feeds back frequency range that described granularity feedback indication information determination module is determined.
15. base station as claimed in claim 14 is characterized in that, described granularity feedback indication information determination module specifically comprises:
Descending correlation bandwidth determining unit is for the correlation bandwidth of the down channel of determining each feedback frequency range;
Granularity feedback indication information determining unit is used for the correlation bandwidth definite according to described descending correlation bandwidth determining unit, determines the feedback granularity indication information of corresponding feedback frequency range.
16. base station as claimed in claim 15 is characterized in that,
Described descending correlation bandwidth determining unit specifically is used for the correlation bandwidth according to the up channel pilot tone of described feedback frequency range or up channel reference signal estimation up channel, determines the correlation bandwidth of the down channel of described feedback frequency range according to the correlation bandwidth of described up channel; Perhaps
The correlation bandwidth of the concrete down channel for notifying the described feedback frequency range of described mobile terminal reporting of described descending correlation bandwidth determining unit; And with the correlation bandwidth of the down channel of described mobile terminal reporting, as the correlation bandwidth of the down channel of described feedback frequency range.
17. such as the arbitrary described base station of claim 14-16, it is characterized in that, also comprise:
The measurement result processing module is for the smoothing processing of described channel quality measurements being carried out time domain or frequency domain.
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