CN101277166A - Method for feedback of channel quality indication - Google Patents
Method for feedback of channel quality indication Download PDFInfo
- Publication number
- CN101277166A CN101277166A CNA2008100896004A CN200810089600A CN101277166A CN 101277166 A CN101277166 A CN 101277166A CN A2008100896004 A CNA2008100896004 A CN A2008100896004A CN 200810089600 A CN200810089600 A CN 200810089600A CN 101277166 A CN101277166 A CN 101277166A
- Authority
- CN
- China
- Prior art keywords
- subband
- cqi
- feedback
- terminal
- cqi value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a channel quality indicator feedback method which includes steps: a terminal determines sub-band required processing channel quality indicator CQI feedback, describes position information of sub-band required processing CQI feedback by using N bite mapping method, wherein, N is total sub-band amount contained in system; an optimal sub-band is selected from sub-band waiting feedback, and position information of the optimal sub-band is described according with sub-band amount distribution bite required processing CQI feedback; absolute CQI value is used for expressing CQI value feedback by the optimal sub-band, difference CQI value is used for expressing difference of other feedback sub-band CQI value relative to the optimal sub-band CQI value; the terminal transmits sub-band position information, optimal sub-band position information, absolute CQI value and difference CQI value required processing CQI feedback to a base station.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to the method for feedback of channel quality indication in a kind of wireless communication system.
Background technology
Channel quality indication (Channel Quality Indication abbreviates CQI as) is the channel condition information that receiver feeds back to transmitter in the communication system.Transmitter corresponds to certain transmission block size, coded system and modulation system with the CQI information that receiver fed back; On this basis, transmitter is that receiver carries out resource allocation and scheduling according to CQI information.Therefore, CQI information the really degree of the channel that can reflect and the expense of feeding back the up link that is consumed all can produce bigger influence to systematic function.Yet in fact, the resource that the validity of the channel that CQI information is reflected and feedback are consumed is a pair of contradiction: if needs reflect channel as far as possible truly, then can take the strategy of unity feedback, promptly feed back the channel quality information of each scheduling unit on the whole working band, but this will produce huge expense.For example, for the communication system of a 10M bandwidth, adopt OFDM (Orthogonal Frequency Division Multiplexing abbreviates OFDM as) technology that whole frequency band is divided into 600 subcarriers, per 24 subcarriers are as a subband, totally 25 subbands; Each subband is as a scheduling unit, and so just 25 CQI values of needs reflect the channel quality on the whole frequency band, need take the expense of a large amount of up signalings.
The solution of the many CQI of reducing feedback signaling expenses is provided in the prior art at present.As shown in Figure 1, terminal is being carried out CQI when feedback, and at first, the absolute CQI value of choosing N the M in the subband the subband with best channel qualities is as feedack, and wherein, M is a fixing integer and satisfied 0＜M≤N; Then, the mode of employing bit mapping marks the positional information of M subband of feedback; At last, the absolute CQI value of additional above-mentioned M subband correspondence constitutes complete CQI feedback signaling after the bit mapping.The advantage of this scheme is exactly only to feed back the CQI value of the best subband of a few channel quality, has reduced the expense of feedback signaling.
Can find by analyzing, the difference of CQI is smaller between the best subband of these channel qualities, can these subbands be described by the form of difference, saves the expense of feedback signaling further, therefore a kind of scheme by differential feedback CQI value has appearred, as shown in Figure 2.At first, choose the absolute CQI value of subband that N the M in the subband have best channel qualities as feedack, wherein, M is a fixing integer and satisfied 0＜M≤N; And then, C
N MRepresented M subband to appear at N the number of combinations in the subband with maximum channel quality, thus the positional information of M subband can be shone upon with the L bit, wherein,
Then, by
Bit is represented the subband positional information of maximum CQI value; (
Expression rounds up, for example,
) last, additional maximum CQI value and differential CQI value constitute complete CQI feedback signaling.
This scheme advantage is to have replaced original N bit mapping by the mapping of L bit, and the mode that combines by absolute CQI value and differential CQI value has reduced a large amount of CQI feedback overheads.Shortcoming is also fairly obvious, need set up a tight one-to-one relationship between the bit mapping in original bit mapping and this scheme.For example, work as N=10, M=1 (M can greater than 1) promptly feeds back the CQI value of a subband in 10 subbands.This subband is in above-mentioned 10 subbands there to be the possibility of any one
Kind, therefore can use
Bit is described this 10 kinds of possibilities, promptly the subband of 0000 representative feedback be arranged in 10 subbands last, the subband of 0001 representative feedback is arranged in 10 subband penults, by that analogy.Like this, a mapping table or conversion formula just need be stored in advance in the base station, when the L bit information of receiving terminal feedback (for example 0001), by tabling look-up or what just can obtain that terminal feeds back by the formula conversion is the CQI value of which subband.The CQI signaling of each terminal feedback, the base station all needs to search for a mapping table or calculates conversion formula one time, causes a large amount of system's expenses operation time.In addition, this method requires the quantity of the subband of feedback CQI value to change, if the sub band number M of terminal feedback can change, then L is not a definite bit, like this, the base station just can't be by tabling look-up or conversion formula is determined the positional information of the pairing feedback subband of L bit information, therefore this method lacks flexibility, and the base station will be known the corresponding relation of two kinds of mappings or the conversion formula between two kinds of mappings in advance, need to consume a large amount of system's operation time, also reduced the efficient of system simultaneously.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method for feedback of channel quality indication, is guaranteeing to reduce the signaling consumption of CQI feedback under the system effectiveness prerequisite as far as possible.
In order to solve the problems of the technologies described above, the invention provides a kind of method for feedback of channel quality indication, may further comprise the steps:
Terminal determines to carry out the subband of channel quality indicator (CQI) feedback, and the bit mapping method of use N bit is described the positional information of the subband that need carry out the CQI feedback, and wherein N is total sub band number that system comprises;
Select an optimum subband from needs carry out the subband of CQI feedback, the positional information of this optimum subband is described in the quantity allocation bit position of carrying out the subband of CQI feedback as required;
Adopt the CQI value of the optimum subband feedback of absolute CQI value representation, adopt the difference of other feedback subbands of differential CQI value representation CQI value with respect to optimum subband CQI value;
Terminal is carried out the subband positional information of CQI feedback, optimum subband positional information, absolute CQI value and differential CQI value generation CQI feedback signaling with described needs and is sent to the base station.
Further, said method also can have following characteristics, wherein said terminal selects to carry out the maximum subband of CQI value in the subband of CQI feedback as optimum subband, or selects to carry out CQI value in the subband of CQI feedback and each and need carry out the subband of difference minimum between the average of CQI value of the subband that CQI feeds back as optimum subband.
Further, said method also can have following characteristics, and described terminal is measured the channel condition information of all subbands, the channel condition information and the predefined threshold value of terminal of described subband is compared, thereby determine to carry out the subband of CQI feedback.
Further, said method also can have following characteristics, and the threshold value of described each terminal is identical or different.
Further, said method also can have following characteristics, and the predefined threshold value of described terminal changes according to residing position of terminal and/or environment.
Further, said method also can have following characteristics, and it is variable that described terminal need be carried out the quantity of subband of CQI feedback.
Further, said method also can have following characteristics, described terminal distribution
Individual bit is described the positional information of described optimum subband, and described S is the number of sub-bands that terminal need be carried out the CQI feedback,
Expression rounds up.
Further, said method also can have following characteristics, be described absolute CQI value and differential CQI value reserved bit position, the difference of carrying out the CQI value of the CQI value of certain subband of CQI feedback and optimum subband has if desired exceeded the scope that can describe for the bit of its reservation, and then each bit position with the differential CQI value of this subband correspondence is 1.
Further, said method also can have following characteristics, and the top n bit of described CQI feedback signaling is a bit map, and reflection need be carried out the subband positional information of CQI feedback, thereafter
Individual bit is the positional information of optimum subband, and the bit after the positional information of optimum subband is absolute CQI value and differential CQI value.
Further, said method also can have following characteristics, and described method also comprises following steps:
21, after described CQI feedback signaling is received in the base station, determine that terminal carries out the quantity and the positional information of the subband of CQI feedback;
22, the base station obtains the bit number of distributing to the optimum subband positional information of description according to the quantity that terminal is carried out the subband of CQI feedback, and then obtains the differential CQI value of positional information, its pairing absolute CQI value and other subband at optimum subband place;
23, positional information, the positional information at optimum subband place, the absolute CQI value of optimum subband and the differential CQI value of other subband of the subband by carrying out CQI feedback calculate the CQI information of the subband that terminal feeds back.
Further, said method also can have following characteristics, described base station obtains terminal carry out the quantity S of subband of CQI feedback after, further basis
Obtain and distribute to the bit number of describing optimum subband positional information, wherein
Expression rounds up.
CQI feedback method of the present invention, the number of sub-bands of terminal feedback is variable, and has used the changeability of terminal feedback number of sub-bands neatly, and dynamic allocation bit is described positional information; Under the prerequisite that guarantees system effectiveness, reflected the CQI information of terminal feedback more reliably, also greatly reduce feedback overhead simultaneously.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of CQI feedback signaling form in a kind of absolute CQI feedback method in the prior art;
Fig. 2 is the schematic diagram of CQI feedback signaling form in a kind of differential CQI feedback method in the prior art;
Fig. 3 is the flow chart that the present invention is based on the variable CQI feedback method of subband;
Fig. 4 is the schematic diagram of the method for the present invention's CQI value of adopting differential mode storage subband feedback;
Fig. 5 is the schematic diagram of the CQI feedback signaling form that terminal sends among the present invention.
Embodiment
The present invention proposes a kind ofly to suppose system's available band is divided into several subbands based on the variable CQI feedback method of subband, and terminal is carried out the CQI feedback and be may further comprise the steps:
1) terminal generates the CQI feedback signaling, and sends to the base station by up channel;
In the step 1, comprise the following steps: again
11: terminal determines to carry out the quantity of the subband of CQI feedback, and terminal is described the positional information of S the subband that needs the CQI feedback by N bit mapping method, and N is the number of all subbands of system.
Wherein, the threshold value that terminal sets in advance the CQI value and the terminal of N subband relatively, the object that the S that satisfies a specified conditions subband is fed back as CQI.Here, each terminal can be selected a unified judging threshold, also can determine different judging thresholds according to residing position of terminal and/or environment (for example, center of housing estate or cell edge, the interference strength size that is subjected to).Therefore, the subband number S of feedback is variable, makes the number of sub-bands of terminal feedback and the actual conditions that the CQI value can be described terminal more accurately.
12: from the subband of determining to carry out the CQI feedback, choose an optimum subband, alternatively:
A) optimum subband need carry out the subband of the maximum CQI value of feedback in the subband of CQI feedback for each;
B) optimum subband is the subband of the difference minimum between the average of the CQI value of feedback and the subband feedback CQI value that each need carry out the CQI feedback;
The selection of certain optimum subband is not limited to above-mentioned (a), (b) mode described in.
13: carry out the quantity of the subband of CQI feedback as required, dynamically the residing positional information of optimum subband is described in the allocation bit position;
Wherein, for the bit of describing optimum subband positional information distribution be
Wherein S is the subband number of terminal feedback,
Expression rounds up, and this positional information is a relative position information.
14: the absolute CQI value and the differential CQI value of other feedback subband of determining optimum subband with respect to the danger spot CQI value of optimum subband.
2) after the base station receives the CQI feedback signaling of terminal transmission, by generating the channel quality indicated value that the corresponding algorithm of CQI feedback signaling recovers the respective sub-bands of terminal transmission with terminal.
In the step 2, can comprise the following steps: again
21: base station decodes CQI feedback signaling bit map, determine that terminal carries out the quantity and the positional information of the subband of CQI feedback;
22: the base station calculates the bit number of distributing to the optimum subband of description position by the quantity of CQI feedback subband, and then obtains the differential CQI value of positional information, its pairing absolute CQI value and other subband at optimum subband place;
23:, calculate the CQI information of the subband of terminal feedback by positional information, the positional information at optimum subband place, the absolute CQI value of optimum subband and the differential CQI value of other subband of CQI feedback subband.
Because S is variable and the dynamic assignment bit is described optimum subband positional information, terminal CQI feedback signaling form requires the base station to possess corresponding decoding capability unlike the prior art.
Among the present invention, based on the flow chart of the variable CQI feedback method of subband, as shown in Figure 3.
At first, terminal carries out 302, by measuring the channel condition information of all subbands.
Afterwards, terminal carries out 303, and the threshold value that the channel condition information value and the terminal of each subband pre-set relatively the object of the subband that satisfies specified conditions as the CQI feedback, supposes that needing the quantity of the subband that CQI feeds back is S.Here, can select a unified threshold value, also can be (for example according to the residing position of terminal and/or environment, center of housing estate or cell edge, the interference strength size that is subjected to) determines corresponding different threshold value, make the number of sub-bands of feedback and the actual conditions that the CQI value can be described terminal more accurately, for carrying out resource allocation and scheduling provides more accurate information in the base station.
Afterwards, terminal carries out 304, chooses one and have optimum subband from the subband of determining to carry out the CQI feedback.
Then, terminal carries out 305, and all subbands (comprise the subband of needs feedback CQI value and do not need to feed back the subband of CQI value) mode that the employing bit shines upon is described its positional information.Need subband corresponding bit in the bit mapping of feedback CQI value to be set to " 1 ", the subband corresponding bit in the bit mapping that does not need to feed back the CQI value is set to " 0 ".Also can adopt opposite mode, need its corresponding bit of feedback CQI subband to be set to " 0 ", its corresponding bit of subband that does not need to feed back the CQI value is set to " 1 ".
Next, terminal carries out 306, because 303 determined that the number of the subband of feedback CQI is S, and in 306, allocation bit position dynamically
Description has the positional information of the subband of optimal CQI value.
Below, terminal carries out 307, adopts absolute CQI value to describe the CQI information of optimum subband feedback, adopts the differential CQI value to describe the difference of CQI value between other feedback subband and the optimum subband, as shown in Figure 4.If the differential CQI value of certain subband has exceeded the scope that can describe for the bit of its reservation, then will all be changed to " 1 " for the bit that this subband is reserved, this difference value is described to greatest extent.
Wherein, described reserved bit position is that the base station is just pre-specified before generating the CQI feedback signaling, and for example, 5 bits are represented absolute CQI, and 3 table of bits are shown differential CQI.
Terminal carries out 308, forms the CQI feedback signaling, and by feedback channel the CQI feedback signaling is sent to the base station.The concrete structure of CQI feedback signaling comprises two parts: bit mapping part and CQI feedback information part, as shown in Figure 5.Wherein, the top n bit of this CQI feedback signaling is a bit map, and reflection need be carried out the subband positional information of CQI feedback, thereafter
Individual bit is the positional information of optimum subband, and bit thereafter is the absolute CQI value of optimum subband, is the differential CQI value at last.The bit of the absolute CQI value and the CQI value of checking the mark is set in advance by system.
The base station is after the CQI information that receives the terminal feedback, carry out 309, the total subband number of supposing the system is N, then the base station is by after decoding to the CQI feedback signaling, N bit before at first analyzing, determine that wherein bit is the quantity and the position thereof of " 1 ", determine the sequence number and the quantity S of the subband of terminal feedback CQI information.
Then, the base station carries out 310, according to the quantity S of the subband of the feedback CQI information of determining in 309, by
Calculate the bit position of describing optimum subband, and then obtain the original position bit of the sequence number and the CQI feedback information part of optimum subband.
At last, the base station carries out 311, by the CQI feedback information is partly adopted corresponding algorithm, recovers the respective sub-bands channel quality indication that terminal sends.
Further specify the present invention below by an application example.Should be with in the example, subband adds up to 12 in the system, and terminal is through measuring the channel conditions of each subband, by with pre-set threshold value L
ThRelatively, determine that needing the subband of CQI feedback is Subband
2, Subband
6, Subband
9, the CQI value of indication is respectively 28,26,23, the subband that optimum subband selection has maximum feedback CQI value, then Subband
2Be optimum subband.
At first, the bit that needs to feed back the subband correspondence of CQI value in bit mapping is set to " 1 ", and the bit that does not feed back the subband correspondence of CQI value is set to " 0 ", and promptly bit map is " 010001001000 ".Because the subband of feedback CQI value always has three, then distributes
Bit is described the positional information with optimum subband, i.e. Subband
2Relative position information be " 00 ".
Then, absolute CQI value adopts 5 bits to represent, the CQI value adopts 3 bits to represent relatively, then Subband
2Pairing absolute CQI value is " 11100 ", Subband
6, Subband
9Corresponding differential CQI value is " 010 ", " 101 ".And then the CQI feedback information that terminal need send is " 0100010010000011100010101 ".
Preceding 12 bit informations are at first analyzed in the base station after receiving the CQI information of terminal, adding up wherein is the number of bit of " 1 " and the position of appearance, determine that terminal fed back Subband
2, Subband
6, Subband
9The CQI value of three subbands; And then pass through
The bit number of determining the optimum subband of description is 2 bits, and the base station determines that by analyzing bit mapping back 2 bit informations " 00 " it is Subband that terminal is fed back optimum subband
2Last base station is by obtaining the CQI information of terminal feedback to the decoding of absolute CQI value and difference CQI value.
Compared with prior art, the present invention has following difference and technique effect: (1) terminal is anti-The quantity S of the subband of feedback can change according to the residing position of terminal is different with environment, and prior art Middle M and S are definite value. (2) adopt optimum subband to substitute maximum CQI value subband, the optimum son of feedback The absolute CQI value of band. (3) dynamic assignment of optimum subband positional information bit. Because among the present invention S is variable for feedback subband number, and the bit of therefore describing optimum subband positional information is also variable, namely
Variable, if the subband number that terminal need to be fed back is seldom, then be used for describing optimum subband positional information Bit has also seldom so just been saved certain overhead bit. 4) base station decodes is convenient, and system is supported The source consumes little.
Claims (11)
1, a kind of method for feedback of channel quality indication is characterized in that, may further comprise the steps:
Terminal determines to carry out the subband of channel quality indicator (CQI) feedback, and the bit mapping method of use N bit is described the positional information of the subband that need carry out the CQI feedback, and wherein N is total sub band number that system comprises;
Select an optimum subband from needs carry out the subband of CQI feedback, the positional information of this optimum subband is described in the quantity allocation bit position of carrying out the subband of CQI feedback as required;
Adopt the CQI value of the optimum subband feedback of absolute CQI value representation, adopt the difference of other feedback subbands of differential CQI value representation CQI value with respect to optimum subband CQI value;
Terminal is carried out the subband positional information of CQI feedback, optimum subband positional information, absolute CQI value and differential CQI value generation CQI feedback signaling with described needs and is sent to the base station.
2, feedback method as claimed in claim 1, it is characterized in that, wherein said terminal selects to carry out the maximum subband of CQI value in the subband of CQI feedback as optimum subband, or selects to carry out CQI value in the subband of CQI feedback and each and need carry out the subband of difference minimum between the average of CQI value of the subband that CQI feeds back as optimum subband.
3, the method for claim 1 is characterized in that, described terminal is measured the channel condition information of all subbands, the channel condition information and the predefined threshold value of terminal of described subband is compared, thereby determine to carry out the subband of CQI feedback.
4, method as claimed in claim 3 is characterized in that, the threshold value of described each terminal is identical or different.
5, method as claimed in claim 3 is characterized in that, the predefined threshold value of described terminal changes according to residing position of terminal and/or environment.
6, the method for claim 1 is characterized in that, it is variable that described terminal need be carried out the quantity of subband of CQI feedback.
7, as claim 1 or 6 described methods, it is characterized in that described terminal distribution
Individual bit is described the positional information of described optimum subband, and described S is the number of sub-bands that terminal need be carried out the CQI feedback,
Expression rounds up.
8, the method for claim 1, it is characterized in that, be described absolute CQI value and differential CQI value reserved bit position, the difference of carrying out the CQI value of the CQI value of certain subband of CQI feedback and optimum subband has if desired exceeded the scope that can describe for the bit of its reservation, and then each bit position with the differential CQI value of this subband correspondence is 1.
9, method as claimed in claim 8 is characterized in that, the top n bit of described CQI feedback signaling is a bit map, and reflection need be carried out the subband positional information of CQI feedback, thereafter
Individual bit is the positional information of optimum subband, and the bit after the optimum subband positional information is absolute CQI value and differential CQI value.
10, as the arbitrary described method of claim 1 to 6, it is characterized in that described method also comprises following steps:
21, after described CQI feedback signaling is received in the base station, determine that terminal carries out the quantity and the positional information of the subband of CQI feedback;
22, the base station obtains the bit number of distributing to the optimum subband positional information of description according to the quantity that terminal is carried out the subband of CQI feedback, and then obtains the differential CQI value of positional information, its pairing absolute CQI value and other subband at optimum subband place;
23, positional information, the positional information at optimum subband place, the absolute CQI value of optimum subband and the differential CQI value of other subband of the subband by carrying out CQI feedback calculate the CQI information of the subband that terminal feeds back.
11, method as claimed in claim 10 is characterized in that, described base station obtains terminal carry out the quantity S of subband of CQI feedback after, further basis
Obtain and distribute to the bit number of describing optimum subband positional information, wherein
Expression rounds up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100896004A CN101277166A (en) | 2008-04-03 | 2008-04-03 | Method for feedback of channel quality indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100896004A CN101277166A (en) | 2008-04-03 | 2008-04-03 | Method for feedback of channel quality indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101277166A true CN101277166A (en) | 2008-10-01 |
Family
ID=39996215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100896004A Pending CN101277166A (en) | 2008-04-03 | 2008-04-03 | Method for feedback of channel quality indication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101277166A (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800578A (en) * | 2010-01-08 | 2010-08-11 | 西安电子科技大学 | Method for reducing downlink multipoint cooperation implicate feedback overhead |
| WO2010124602A1 (en) * | 2009-04-30 | 2010-11-04 | 华为技术有限公司 | Method for information transmission and communication apparatus |
| CN102026280A (en) * | 2009-09-11 | 2011-04-20 | ***通信集团公司 | Feedback method and equipment for channel state information |
| WO2011047588A1 (en) * | 2009-10-22 | 2011-04-28 | 华为技术有限公司 | Method for feeding back and receiving indirect channel information, equipment and system therefor |
| CN102055569A (en) * | 2009-10-28 | 2011-05-11 | ***通信集团公司 | Method, system and device for feeding back channel quality indicator (CQI) |
| CN102104456A (en) * | 2009-12-17 | 2011-06-22 | ***通信集团公司 | Method, system and device for feedback of channel quality indication (CQI) |
| WO2011097924A1 (en) * | 2010-02-09 | 2011-08-18 | 华为技术有限公司 | Method for feeding back and processing channel information, terminal and base station thereof |
| WO2012095015A1 (en) * | 2011-01-12 | 2012-07-19 | 中兴通讯股份有限公司 | Method and device for determining channel quality indication information |
| CN101808370B (en) * | 2009-02-18 | 2012-07-25 | 华为技术有限公司 | Method and device for reporting status information of channel |
| CN102804622A (en) * | 2010-03-19 | 2012-11-28 | 富士通株式会社 | Cell selection for multi-cell MIMO transmission |
| CN101729473B (en) * | 2008-10-10 | 2012-11-28 | 中兴通讯股份有限公司 | Method for feeding back quality index of channel and receiver |
| CN102958178A (en) * | 2012-11-30 | 2013-03-06 | 大唐移动通信设备有限公司 | Frequency selectivity scheduling method, continuous quality improvement (CQI) reporting method, device and system |
| CN101938812B (en) * | 2009-06-29 | 2013-03-20 | 中兴通讯股份有限公司 | Method and device for determining sub-band indexes |
| CN101692735B (en) * | 2009-08-20 | 2013-03-27 | 中国科学院上海微***与信息技术研究所 | Implicit information channel feedback method in coordinated multi-point transmission scene |
| CN101873206B (en) * | 2009-04-27 | 2013-07-31 | 电信科学技术研究院 | Method, device and system for feeding back channel information |
| CN103346868A (en) * | 2013-01-08 | 2013-10-09 | 苏州维特比信息技术有限公司 | Method for reporting channel quality indication |
| CN103378930A (en) * | 2012-04-26 | 2013-10-30 | 普天信息技术研究院有限公司 | Method for updating of channel quality indicating information of base station |
| CN101932000B (en) * | 2009-06-23 | 2014-06-11 | 中兴通讯股份有限公司南京分公司 | Channel information feedback method and device |
| WO2015018342A1 (en) * | 2013-08-06 | 2015-02-12 | 夏普株式会社 | Method, base station, and user equipment for transmission and reception downlink physical channel |
| CN105264992A (en) * | 2013-03-12 | 2016-01-20 | 华为技术有限公司 | Method and device for scheduling frequency band resource |
| CN106817206A (en) * | 2015-11-27 | 2017-06-09 | 北京信威通信技术股份有限公司 | For the interference bypassing method and system of multihop network |
| CN110535510A (en) * | 2018-08-10 | 2019-12-03 | 中兴通讯股份有限公司 | A kind of channel state information reports/processing method, equipment and storage medium |
| CN112602277A (en) * | 2018-07-31 | 2021-04-02 | 华为技术有限公司 | Differential CQI value reporting procedure |
-
2008
- 2008-04-03 CN CNA2008100896004A patent/CN101277166A/en active Pending
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729473B (en) * | 2008-10-10 | 2012-11-28 | 中兴通讯股份有限公司 | Method for feeding back quality index of channel and receiver |
| CN101808370B (en) * | 2009-02-18 | 2012-07-25 | 华为技术有限公司 | Method and device for reporting status information of channel |
| CN101873206B (en) * | 2009-04-27 | 2013-07-31 | 电信科学技术研究院 | Method, device and system for feeding back channel information |
| WO2010124602A1 (en) * | 2009-04-30 | 2010-11-04 | 华为技术有限公司 | Method for information transmission and communication apparatus |
| CN101932000B (en) * | 2009-06-23 | 2014-06-11 | 中兴通讯股份有限公司南京分公司 | Channel information feedback method and device |
| CN101938812B (en) * | 2009-06-29 | 2013-03-20 | 中兴通讯股份有限公司 | Method and device for determining sub-band indexes |
| CN101692735B (en) * | 2009-08-20 | 2013-03-27 | 中国科学院上海微***与信息技术研究所 | Implicit information channel feedback method in coordinated multi-point transmission scene |
| CN102026280A (en) * | 2009-09-11 | 2011-04-20 | ***通信集团公司 | Feedback method and equipment for channel state information |
| CN102026280B (en) * | 2009-09-11 | 2014-12-31 | ***通信集团公司 | Feedback method and equipment for channel state information |
| WO2011047588A1 (en) * | 2009-10-22 | 2011-04-28 | 华为技术有限公司 | Method for feeding back and receiving indirect channel information, equipment and system therefor |
| CN102045142A (en) * | 2009-10-22 | 2011-05-04 | 华为技术有限公司 | Indirect channel information feedback method, receiving method, equipment and system |
| CN102055569B (en) * | 2009-10-28 | 2013-07-31 | ***通信集团公司 | Method, system and device for feeding back channel quality indicator (CQI) |
| CN102055569A (en) * | 2009-10-28 | 2011-05-11 | ***通信集团公司 | Method, system and device for feeding back channel quality indicator (CQI) |
| CN102104456B (en) * | 2009-12-17 | 2014-06-11 | ***通信集团公司 | Method, system and device for feedback of channel quality indication (CQI) |
| CN102104456A (en) * | 2009-12-17 | 2011-06-22 | ***通信集团公司 | Method, system and device for feedback of channel quality indication (CQI) |
| CN101800578B (en) * | 2010-01-08 | 2013-04-17 | 西安电子科技大学 | Method for reducing downlink multipoint cooperation implicate feedback overhead |
| CN101800578A (en) * | 2010-01-08 | 2010-08-11 | 西安电子科技大学 | Method for reducing downlink multipoint cooperation implicate feedback overhead |
| WO2011097924A1 (en) * | 2010-02-09 | 2011-08-18 | 华为技术有限公司 | Method for feeding back and processing channel information, terminal and base station thereof |
| US8989016B2 (en) | 2010-03-19 | 2015-03-24 | Fujitsu Limited | Cell selection for multi-cell MIMO transmission |
| CN102804622A (en) * | 2010-03-19 | 2012-11-28 | 富士通株式会社 | Cell selection for multi-cell MIMO transmission |
| CN102804622B (en) * | 2010-03-19 | 2015-01-14 | 富士通株式会社 | Cell selection for multi-cell MIMO transmission |
| WO2012095015A1 (en) * | 2011-01-12 | 2012-07-19 | 中兴通讯股份有限公司 | Method and device for determining channel quality indication information |
| US9107087B2 (en) | 2011-01-12 | 2015-08-11 | Zte Corporation | Method and device for determining channel quality indication information |
| CN103378930A (en) * | 2012-04-26 | 2013-10-30 | 普天信息技术研究院有限公司 | Method for updating of channel quality indicating information of base station |
| CN102958178A (en) * | 2012-11-30 | 2013-03-06 | 大唐移动通信设备有限公司 | Frequency selectivity scheduling method, continuous quality improvement (CQI) reporting method, device and system |
| CN102958178B (en) * | 2012-11-30 | 2015-08-19 | 大唐移动通信设备有限公司 | A kind of frequency selectivity dispatching method, CQI report method, Apparatus and system |
| CN103346868A (en) * | 2013-01-08 | 2013-10-09 | 苏州维特比信息技术有限公司 | Method for reporting channel quality indication |
| CN103346868B (en) * | 2013-01-08 | 2016-08-17 | 李文龙 | A kind of method of reporting channel quality instruction |
| CN105264992A (en) * | 2013-03-12 | 2016-01-20 | 华为技术有限公司 | Method and device for scheduling frequency band resource |
| CN105264992B (en) * | 2013-03-12 | 2019-06-18 | 华为技术有限公司 | A kind of dispatching method and device of band resource |
| WO2015018342A1 (en) * | 2013-08-06 | 2015-02-12 | 夏普株式会社 | Method, base station, and user equipment for transmission and reception downlink physical channel |
| CN106817206A (en) * | 2015-11-27 | 2017-06-09 | 北京信威通信技术股份有限公司 | For the interference bypassing method and system of multihop network |
| CN112602277A (en) * | 2018-07-31 | 2021-04-02 | 华为技术有限公司 | Differential CQI value reporting procedure |
| CN110535510A (en) * | 2018-08-10 | 2019-12-03 | 中兴通讯股份有限公司 | A kind of channel state information reports/processing method, equipment and storage medium |
| US12009893B2 (en) | 2018-08-10 | 2024-06-11 | Zte Corporation | Methods and devices for reporting and processing channel state information, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101277166A (en) | Method for feedback of channel quality indication | |
| US20100002642A1 (en) | Radio communication apparatus, system and method | |
| CN101039160B (en) | Multiplexing system, method for sharing control channel resource and reception equipment thereof | |
| CN101242219B (en) | Method and apparatus for reference signal generation in wireless communications system | |
| CN103138890B (en) | The method and apparatus of the channel-quality feedback in wireless communication system is provided | |
| CN101005326B (en) | Up resource distributing method and radio communication system | |
| CN101513111B (en) | Base station device | |
| US20100190486A1 (en) | Radio communication mobile station device and cdd mode judging method | |
| KR20070082355A (en) | Apparatus and method for apparatus and method for sub-channel allocation in a wireless communication system | |
| CN105471543A (en) | Transmitting device and transmitting method | |
| CN101043500B (en) | Method for determining inverse data modulation coding mode and access terminal thereof | |
| CN101640656B (en) | Channel quality index feedback method, receiver and transmitter | |
| CN102077644A (en) | Wireless communication device and wireless communication method | |
| CN101291171B (en) | Feedback method of indication of communication channel quality | |
| CN101383656A (en) | Method and device for optimizing pilot based on speed and channel quality indication | |
| CN101111083B (en) | Quality feedback method for signal channel | |
| CN101277167A (en) | Feedback control method, apparatus and transceiver for orthogonal frequency division multiplexing system | |
| CN103227819A (en) | Business data transmission method and system, base station and UE in MTC | |
| CN1954534B (en) | Methods and apparatus for flexible spectrum allocation in communication systems | |
| WO2008108567A1 (en) | Method and system for transmitting/receiving signal in a communication system | |
| KR20080004701A (en) | Apparatus and method for channel feedback in wireless communication system | |
| CN101378273B (en) | Method for feedback of channel quality indication with periods | |
| CN102694617B (en) | A kind of methods, devices and systems of data code modulation | |
| CN102131300A (en) | Queue scheduling method and device | |
| CN102238611B (en) | Control area channel quality report method, control channel collocation method and device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20081001 |