CN101043257A - Reliable receiving method and apparatus for self-adapting modulation coding information - Google Patents
Reliable receiving method and apparatus for self-adapting modulation coding information Download PDFInfo
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- CN101043257A CN101043257A CN 200610079112 CN200610079112A CN101043257A CN 101043257 A CN101043257 A CN 101043257A CN 200610079112 CN200610079112 CN 200610079112 CN 200610079112 A CN200610079112 A CN 200610079112A CN 101043257 A CN101043257 A CN 101043257A
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Abstract
The invention discloses a reliable receiving method of self adapting modulating code information that includes the emission end judges whether the self adapting modulating code absolute quantity which is corresponding with a emission antenna and feedback by the receiver is error; and under condition of error, the self adapting modulating code absolute quantity which is corresponding with a emission antenna and feedback by the receiver can be calibrated. The invention also discloses a reliable receiving device of self adapting modulating code information. The scheme of the invention can eliminates the effect of implement cause to AMC technique when transmitting AMC absolute quantity is error.
Description
Technical field
The present invention relates to the multiple-input and multiple-output (MIMO in the mobile communication system, Multi-InputMulti-Output) technology and Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding) technology relates in particular to a kind of reliable receiving method and device of self-adapting modulation coding information.
Background technology
At present, because multiple-input and multiple-output (MIMO, Multi-Input Multi-Output) technology is from the angle of increase power system capacity or from the angle of improving systematic function the irreplaceable superiority of other technologies to be arranged all, so the application of MIMO technology in mobile communication system more and more obtains paying attention to.Wherein the MIMO technology mainly comprises two big classes, a class be with the maximization diversity gain be the space diversity reception to communicate of purpose, another kind of then is to be the space division multiplexing technology of purpose with maximum data speed.
Wherein, the space division multiplexing technological model in the MIMO technology can be divided into following two kinds of patterns:
(1) first kind of pattern:
As shown in Figure 1, for in the existing MIMO technology based on the space division multiplexing data sending processing process schematic diagram of first kind of pattern, wherein transmitting terminal with data flow to be sent at first through chnnel coding, interweave and after planisphere mapping etc. handles, be the data flow of M road (M is the number of antennas that transmitting terminal comprises) phase same rate along separate routes, every circuit-switched data stream is launched through different antennas respectively after handling through corresponding channelizing.
Wherein according to the multi-access mode difference that system adopted, the identical channel code or the channel resources such as frequency or time of data occupancy of this M that transmitting terminal comprises an antenna emission; For example, for code division multiple access (CDMA) system, the M that transmitting terminal a comprises antenna can use identical channel code, and for OFDM (OFDMA) system, the M that transmitting terminal a comprises antenna can use one group of identical subcarrier etc., channelizing shown in this Fig. 1 is handled and is promptly referred to the multi-access mode that adopts according to system, will carry out spread processing (for cdma system), subcarrier mapping by the signal that respective antenna is launched and handle (for the OFDMA system) etc.
(2) second kinds of patterns:
As shown in Figure 2, for in the existing MIMO technology based on the space division multiplexing data sending processing process schematic diagram of second kind of pattern, wherein transmitting terminal is M circuit-switched data stream at first along separate routes with data flow to be sent, the speed of each circuit-switched data stream conforms to the message transmission rate that can support of a respective antenna in M the transmitting antenna respectively, then each circuit-switched data flow point not through chnnel coding independently, interweave and after planisphere mapping etc. handles, go out by corresponding transmission antennas transmit respectively at last.In like manner, according to the multi-access mode difference that system adopted, the data flow of this M transmission antennas transmit takies identical channel code or channel resources such as frequency or time, for example, for cdma system, this M transmitting antenna uses identical channel code, and for the OFDMA system, this M transmitting antenna uses one group of identical subcarrier etc.
In addition; in mobile communication system, also can use adaptive modulation and coding (AMC usually at present; Adaptive Modulation and Coding) technology; the AMC technology is meant that specifically receiving terminal feeds back to transmitting terminal with the information of measuring such as channel quality by feedback channel; so that transmitting terminal and then according to suitable chnnel coding of the Information Selection such as channel quality of receiving terminal feedback and modulation system thereof etc.; carry out processing such as chnnel coding and modulation thereof, thereby reach the self adaptation of channel and the purpose of maximum rate transmission.
Wherein in the specific implementation process of AMC technology, in order to reduce the control signaling consumption that information such as receiving terminal feedback channel quality are brought, general way is typical case's modulation and the encoding scheme (MCS that transmitting terminal is supported, Modulation and Coding Scheme) with corresponding channel quality indicated value (CQI, Channel Quality Indicator) sets up corresponding relation between, be kept at transmitting terminal and receiving terminal simultaneously thereby make a CQI concordance list.The performance requirement that just can support according to self receiver of receiving terminal like this, pre-determining it requires down the needed channel quality of each MCS of reception (typically with Signal Interference and Noise Ratio SINR in certain receptivity (as the error rate etc.), Signal to Interference andNoise Ratio characterizes), therefore receiving terminal just can according to actual measurement to channel quality judge the MCS that it can receive, and this MCS corresponding CQI value in described CQI concordance list fed back to transmitting terminal, thereby reduce the control signaling consumption that receiving terminal feeds back.
Usually in mobile communication system, the use that usually combines of above-mentioned MIMO technology and AMC technology, like this in MIMO scheme based on AMC, the message transmission rate of supporting owing to each antenna in first kind of pattern is identical, therefore receiving terminal only need feed back a total CQI information and gets final product, and the AMC technology under this and the single channel antenna is similar; But in second kind of pattern, different antennas can adopt different code modulation modes, the message transmission rate that each antenna can be supported is also inequality, therefore just need receiving terminal to feed back corresponding C QI information respectively at each transmitting antenna, therefore in MIMO scheme based on AMC, second kind of pattern needs receiving terminal feedback more control signaling consumption, and the control information amount of its required feedback is M times (M is the number of transmit antennas that comprises in the mimo system) of single-antenna case.
Wherein receiving terminal is that CQI information is inserted (HSPDA by high speed downlink packet, High SpeedPacket Data Access) High-Speed Dedicated Physical Control Channel (HS-DPCCH in the system physical layer, HighSpeed-Dedicated Physical Control Channel) feeds back to transmitting terminal, wherein HSPDA is a kind of descending wireless enhanced technology that third generation collaborative project (3GPP) is introduced in Release 5, and relative HS-DPCCH channel can be used to carry the affirmation (ACK) of receiving terminal feedback/do not confirm (NACK) information and CQI information etc.
As shown in Figure 3, HS-DPCCH subframe structure schematic diagram for existing HS-DPCCH channel, as seen from Figure 3, comprise 3 time slots in the HS-DPCCH subframe, each time slot can transmit 10 channel bit, wherein first time slot is used to transmit receiving terminal in the HARQ relevant information of mixing feedback in the automatic repeat requests (HARQ, Hybrid Automatic Repeat request), and latter two time slot is used to transmit relevant CQI information.Wherein, the CQI message length is 5 bits, through (20,5) form 20 bits after the encoding process and transmit on latter two time slot of HS-DPCCH subframe, the HARQ information spinner of receiving terminal feedback will comprise that receiving terminal receives information success message (ACK message), receiving terminal receives information failed message (NACK message), HARQ Preamble message (PRE message) and HARQ Postamble message (POST message).
As seen in sum in second kind of pattern based on the MIMO scheme of AMC, the control information that receiving terminal need feed back is M a times of single-antenna case, promptly need receiving terminal feedback more control signaling consumption, therefore how reducing the CQI amount of information of receiving terminal feedback, is the key of dealing with problems thereby reach the purpose that reduces receiving terminal feedback control signaling expense.
The application number submitted on March 14th, 2006 of the applicant is to have proposed in 200510065759.3 the patent application document " based on the information feedback method and the device thereof of multi-antenna self-adaptive modulation coding " in order to reduce the solution based on receiving terminal feedback control information amount in second kind of pattern of the MIMO scheme of AMC for this reason, this scheme mainly is according in the MIMO technology in mobile communication system, as Transmission Time Interval (TTI, when Transmission Time Interval) length is less than the correlated time of channel, channel fading changes the difference features of smaller between the adjacent TTI of same transmitting antenna, and propose in the mimo system based on second kind of pattern of AMC, receiving terminal adopts the AMC absolute magnitude (to refer to need at that time to feed back to the AMC amount of information of transmitting antenna to every transmit antennas respectively, as CQI absolute magnitude ACQI, Absolute CQI) and the AMC relative quantity (the AMC amount of information that need at that time to refer to feed back to transmitting antenna has fed back to the difference of the AMC amount of information of this transmitting antenna with respect to the front, as CQI relative quantity RCQI, Relative CQI) feedback system that combines, thereby comparatively effectively reduce the AMC amount of information (as the CQI amount of information) of each transmit antenna feedback of receiving terminal in mimo system, and reach the purpose that reduces receiving terminal feedback control signaling expense with this.
Wherein receiving terminal can feed back the AMC absolute magnitude respectively with the AMC relative quantity by different feedback channels.Because the variation of channel is not sudden change but continuous in the adjacent TTI, particularly adjacent TTI channel variation will be very slow when motion of mobile terminals speed is low, therefore causing AMC absolute magnitude (as ACQI) to change between adjacent TTI will be very little, so do not need each TTI all to transmit a feedback AMC absolute magnitude (as ACQI), and a transmission AMC absolute magnitude of feedback (as ACQI) gets final product after only needing certain at interval TTI, can transmit the corresponding AMC relative quantity (as RCQI) of feedback in all the other TTI at interval, so just can significantly reduce receiving terminal on average needs the control information of feeding back at each transmitting antenna.
Scheme principle based on above-mentioned application documents proposition, receiving terminal do not transmit feedback AMC absolute magnitude with each TTI continuously at every transmit antennas, but transmits feedback with certain transmission cycle (an AMC absolute magnitude transmission cycle length comprises at least two TTI).For at the AMC absolute magnitude transmission cycle of certain transmitting antenna except that transmission to other TTI should the AMC absolute magnitude of transmitting antenna, can be used to transmit the AMC absolute magnitude of corresponding other antennas, also can adopt discontinuous transmission (DTX, Discontinuous Transmission) handles, promptly in these TTI, do not launch any signal.As shown in Figure 4, be the first embodiment schematic diagram of implementing in first to file scheme principle that proposes based on the applicant, wherein this embodiment is an example with number of transmit antennas M=2, according in first to file scheme principle, receiving terminal is being used to feed back the ACQI information of using corresponding two transmit antennas of each TTI alternate transmission on the ACQI channel of ACQI information successively at two transmit antennas respectively, and ACQI reporting period is at number of transmit antennas M=2 among the figure, 3, be respectively 2,3,4 TTI at 4 o'clock.For the situation of M=2, be used in the TTI of transmit antennas feedback ACQI information, then on the RCQI channel, feeding back RCQI information on the ACQI channel to an other transmit antennas.
In like manner as shown in Figure 5, be the second embodiment schematic diagram of implementing in first to file scheme principle that proposes based on the applicant, this embodiment takies the 1st respectively being used to feed back on the ACQI channel of ACQI information, 5,9... the ACQI information of corresponding the 1st transmitting antenna of individual TTI transmission, and take the 2nd respectively, 6, the ACQI information of 10... corresponding the 2nd transmitting antenna of TTI transmission, and take the 3rd, 7,11... individual TTI transmits the ACQI information of corresponding the 3rd transmitting antenna and takies the 4th, 8,12... the ACQI information of corresponding the 4th transmitting antenna of individual TTI transmission, the RCQI channel is the RCQI information of corresponding other three transmit antennas of transmission in the TTI of correspondence then.
As shown in Figure 6, be the 3rd embodiment schematic diagram of implementing in first to file scheme principle that proposes based on the applicant, this embodiment typical application is in the communication environment of low rate, receiving terminal takies different TTI to different transmit antennas feedback ACQI information on the ACQI channel, and in some TTI, adopt the DTX transmission process, like this can be so that when satisfying communication performance, reduce the CQI amount of information of average feedback in each TTI greatly.
In the first to file scheme, corresponding each transmitting antenna of receiving terminal feeds back ACQI information on which TTI, and on which TTI feedback RCQI information the ACQI feedback cycle regularly pattern (Timing Pattern) be that system is pre-configured, so receiving-transmitting sides can and receive the ACQI information of each transmitting antenna according to the correct transmission of this timing pattern.For example for certain transmitting antenna, the ACQI feedback cycle regularly given being used to of pattern (Timing Pattern) transmit in the TTI to ACQI information that should transmitting antenna, do not transmit RCQI information that should transmitting antenna.Therefore can in Node B, preserve the current C QI information (Current_CQI) of corresponding each transmitting antenna respectively, follow-up and the Current_CQI of each transmitting antenna of correspondence of preserving is upgraded processing according to the ACQI/RCQI information of each transmitting antenna of correspondence that receives successively, promptly in case receive the ACQI information of corresponding certain transmitting antenna, just the Current_CQI information updating of this transmitting antenna that will preserve is this ACQI information that newly receives, and in case receive the RCQI information of corresponding certain transmitting antenna, just the Current_CQI information of this transmitting antenna that will preserve is carried out corresponding increment or decrement treatment according to the RCQI information that this receives.
The main realization principle that wherein relevant the applicant proposes, embodiment in the first to file technical scheme and to the beneficial effect that should be able to reach please specifically referring to write up in first to file.
Although the control information amount of receiving terminal feedback in the first to file scheme can comparatively effectively reduce based on second kind of pattern of the MIMO scheme of AMC that the applicant proposes, but owing to adopt this scheme receiving terminal is that the TTI of some at interval just feeds back an AMC absolute magnitude (as ACQI), although this scheme can adopt comparatively complicated channel coding technology to guarantee the reliability of AMC absolute magnitude transmission, but can not avoid transmitting the AMC absolute magnitude fully also can make a mistake, thereby make Node B may receive wrong AMC absolute magnitude, all use this wrong AMC absolute magnitude to utilize the follow-up AMC relative quantity (as RCQI) that receives in the cycle in this report to calculate corresponding AMC information in reporting period an AMC absolute magnitude like this, the AMC information in whole reporting period that makes is made a mistake, thereby can cause harmful effect the implementation process of AMC technical scheme.
Summary of the invention
The present invention proposes a kind of reliable receiving method and device of self-adapting modulation coding information, with solve that the applicant proposes transmission AMC absolute magnitude makes a mistake in first to file the time problem that can impact to the enforcement of AMC technology.
For addressing the above problem, the technical scheme that the present invention proposes is as follows:
A kind of reliable receiving method of self-adapting modulation coding information comprises step:
In the multiple-input and multiple-output mobile communication system, transmitting terminal judges whether the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback makes a mistake; And
Under situation about making a mistake, the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback is proofreaied and correct.
Preferably, described method also comprises step:
The Adaptive Modulation and Coding absolute magnitude that transmitting terminal obtains based on correction, and be combined in follow-up each that receives in Adaptive Modulation and Coding absolute magnitude reporting period to Adaptive Modulation and Coding relative quantity that should transmitting antenna, calculate in described reporting period self-adapting modulation coding information that should transmitting antenna.
Preferably, transmitting terminal judges that the process whether the Adaptive Modulation and Coding absolute magnitude makes a mistake specifically comprises:
Transmitting terminal calculates the absolute difference to current self-adapting modulation coding information that should transmitting antenna of the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation; And
In the absolute difference of relatively confirming to calculate during, judge that the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback makes a mistake greater than default threshold value.
Preferably, transmitting terminal judges that the process whether the Adaptive Modulation and Coding absolute magnitude makes a mistake specifically comprises:
Transmitting terminal calculates the absolute difference to current self-adapting modulation coding information that should transmitting antenna of the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation; And
Estimate that receiving terminal feeds back the Signal Interference and Noise Ratio of the shared channel of this Adaptive Modulation and Coding absolute magnitude;
Transmitting terminal in the absolute difference of relatively confirming to calculate greater than preset first threshold, and estimate the Signal Interference and Noise Ratio obtain less than when the preset second threshold value, judge that the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback makes a mistake.
Preferably, described transmitting terminal process that the Adaptive Modulation and Coding absolute magnitude is proofreaied and correct specifically comprises:
Transmitting terminal ignore receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna; And
Continue to use preserve to current self-adapting modulation coding information that should transmitting antenna Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
Preferably, described transmitting terminal process that the Adaptive Modulation and Coding absolute magnitude is proofreaied and correct specifically comprises:
Transmitting terminal calculate one with receiving terminal feed back to the relevant verification amount of Adaptive Modulation and Coding absolute magnitude that should transmitting antenna; And
With preserve to current self-adapting modulation coding information that should transmitting antenna and the verification amount addition that calculates Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
Preferably, the process of described transmitting terminal calculation check amount specifically comprises:
Transmitting terminal calculates the difference to current self-adapting modulation coding information that should transmitting antenna to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation of receiving terminal feedback; And
Determine one greater than 0 less than 1 coefficient;
Transmitting terminal multiplies each other the difference that calculates and obtains described verification amount with the coefficient of determining.
Preferably, described definite coefficient becomes the dull functional relation that rises with the Signal Interference and Noise Ratio that receiving terminal feeds back the shared channel of this Adaptive Modulation and Coding absolute magnitude.
Preferably, the process of described transmitting terminal calculation check amount specifically comprises:
The Adaptive Modulation and Coding increment that transmitting terminal default is fixed; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna greater than 0 o'clock, with described fixing Adaptive Modulation and Coding increment as described verification amount; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna less than 0 o'clock, with the negative value of described fixing Adaptive Modulation and Coding increment as described verification amount.
Preferably, the process of described transmitting terminal calculation check amount specifically comprises:
Transmitting terminal default one becomes the dull Adaptive Modulation and Coding increment that rises functional relation with the Signal Interference and Noise Ratio that receiving terminal feeds back the shared channel of this Adaptive Modulation and Coding absolute magnitude; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna greater than 0 o'clock, with described Adaptive Modulation and Coding increment as described verification amount; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna less than 0 o'clock, with the negative value of described Adaptive Modulation and Coding increment as described verification amount.
Preferably, described self-adapting modulation coding information is a channel quality indication (CQI) information.
A kind of reliable reception device of self-adapting modulation coding information comprises:
Judging unit is used in the multiple-input and multiple-output mobile communication system, and transmitting terminal judges whether the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback makes a mistake;
Correcting unit, the judged result that is used at judging unit is under the situation about making a mistake, and the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback is proofreaied and correct.
Preferably, described device also comprises the information calculations unit, be used for proofreading and correct the Adaptive Modulation and Coding absolute magnitude that obtains based on correcting unit, and be combined in follow-up each that receives in Adaptive Modulation and Coding absolute magnitude reporting period to Adaptive Modulation and Coding relative quantity that should transmitting antenna, calculate in described reporting period self-adapting modulation coding information that should transmitting antenna.
Preferably, described judging unit specifically comprises:
The first absolute difference computation subunit is used for the absolute difference to current self-adapting modulation coding information that should transmitting antenna that transmitting terminal calculates the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
Whether first subelement relatively is used for absolute difference that the comparison first absolute difference computation subunit calculates greater than default threshold value;
First judges subelement, is used for first when relatively subelement relatively draws absolute difference greater than default threshold value, judges that mistake has taken place the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback.
Preferably, described judging unit specifically comprises:
The second absolute difference computation subunit is used for the absolute difference to current self-adapting modulation coding information that should transmitting antenna that transmitting terminal calculates the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
The channel estimating subelement is used to estimate that receiving terminal feeds back the Signal Interference and Noise Ratio of the shared channel of this Adaptive Modulation and Coding absolute magnitude;
Whether second subelement relatively is used for absolute difference that the comparison second absolute difference computation subunit calculates greater than preset first threshold;
Whether the 3rd subelement relatively is used for Signal Interference and Noise Ratio that comparison channel estimating subelement estimates to obtain less than the preset second threshold value;
Second judges subelement, be used for comparing subelement and relatively draw absolute difference greater than preset first threshold second, and, judge that mistake has taken place the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback the 3rd when relatively subelement relatively draws Signal Interference and Noise Ratio less than the preset second threshold value.
Preferably, described correcting unit specifically comprises:
Ignore the feedback information subelement, being used for transmitting terminal is under the situation about making a mistake in the judged result of judging unit, ignore receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna;
Information continue to be used subelement, be used for transmitting terminal continue to use preserve to current self-adapting modulation coding information that should transmitting antenna Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
Preferably, described correcting unit specifically comprises:
Verification amount computation subunit, being used for transmitting terminal is under the situation about making a mistake in the judged result of judging unit, calculate one with receiving terminal feedback to the relevant verification amount of Adaptive Modulation and Coding absolute magnitude that should transmitting antenna;
The addition subelement, be used for preserve to current self-adapting modulation coding information that should transmitting antenna and verification amount addition that verification amount computation subunit calculates Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
Preferably, described self-adapting modulation coding information is a channel quality indication (CQI) information.
The beneficial effect that the present invention can reach is as follows:
The deficiency that technical solution of the present invention proposes at the applicant in the existence of first to file technical scheme, transmitting terminal is proposed when receiving the AMC absolute magnitude of receiving terminal feedback at every turn, whether right judgement is handled to increase the AMC absolute magnitude of judging the receiving terminal feedback, and when the AMC absolute magnitude of judging the receiving terminal feedback makes a mistake, the AMC absolute magnitude of receiving terminal feedback is carried out treatment for correcting, to obtain the AMC absolute magnitude after the treatment for correcting, and then be combined in AMC absolute magnitude reporting period the follow-up AMC relative quantity that receives and ask for the comparatively accurately AMC information of this transmitting antenna in corresponding reporting period should transmitting antenna, thereby eliminate the harmful effect that specific implementation process caused, and it is more perfect in the first to file technical scheme to make that the applicant proposes to the AMC technology.
Description of drawings
Fig. 1 in the existing MIMO technology based on the space division multiplexing data sending processing process schematic diagram of first kind of pattern;
Fig. 2 in the existing MIMO technology based on the space division multiplexing data sending processing process schematic diagram of second kind of pattern;
Fig. 3 is the HS-DPCCH subframe structure schematic diagram of existing HS-DPCCH channel;
The first embodiment schematic diagram in first to file scheme principle implemented of Fig. 4 for proposing based on the applicant;
The second embodiment schematic diagram in first to file scheme principle implemented of Fig. 5 for proposing based on the applicant;
The three embodiment schematic diagram in first to file scheme principle implemented of Fig. 6 for proposing based on the applicant;
Fig. 7 is the main realization principle flow chart of the reliable receiving method of self-adapting modulation coding information of the present invention;
Fig. 8 is the main composition structured flowchart of the reliable reception device of self-adapting modulation coding information of the present invention;
Fig. 9 is that the specific embodiment that increases the information calculations unit in apparatus of the present invention is formed structured flowchart;
Figure 10 forms structured flowchart for first embodiment of judging unit in apparatus of the present invention;
Figure 11 forms structured flowchart for second embodiment of judging unit in apparatus of the present invention;
Figure 12 forms structured flowchart for first embodiment of correcting unit in apparatus of the present invention;
Figure 13 forms structured flowchart for second embodiment of correcting unit in apparatus of the present invention.
Embodiment
The applicant is at may cause dysgenic problem in receiving terminal transmission feedback AMC absolute magnitude (as ACQI information) to the specific implementation process of AMC technology when making a mistake in the first to file scheme, transmitting terminal (as Node B) is proposed when receiving the AMC absolute magnitude of receiving terminal feedback at every turn, whether right judgement is handled to increase the AMC absolute magnitude of judging the receiving terminal feedback, and when the AMC absolute magnitude of judging the receiving terminal feedback makes a mistake, the AMC absolute magnitude of receiving terminal feedback is carried out treatment for correcting, with the AMC absolute magnitude that obtains proofreading and correct, thereby eliminate the harmful effect that specific implementation process caused, and it is more perfect in the first to file technical scheme to make that the applicant proposes to the AMC technology.
Be explained in detail to the main realization principle of technical solution of the present invention, specific implementation process and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
As shown in Figure 7, be the main realization principle flow chart of the reliable receiving method of self-adapting modulation coding information of the present invention, its main implementation procedure is as follows:
Step S10, in the mobile communication system based on the MIMO technology, transmitting terminal (as Node B) judges whether the AMC absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback makes a mistake; Because the continuity of channel variation, if transmitting terminal is judged the current AMC information to should transmitting antenna of the AMC absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and its preservation and is differed bigger, then can assert channel sudden change to occur, and then the AMC absolute magnitude that can draw the receiving terminal feedback in view of the above makes a mistake.According to this principle the present invention program two kinds of preferred versions of judging whether the AMC absolute magnitude makes a mistake have been proposed here:
A kind of is the absolute difference to current AMC information that should transmitting antenna of the AMC absolute magnitude of the transmitting terminal transmitting antenna of correspondence that at first calculates receiving terminal feedback and preservation; And when relatively confirming this absolute difference that calculates, can judge that then mistake has taken place the AMC absolute magnitude to should transmitting antenna of receiving terminal feedback greater than a threshold value that sets in advance.
Another kind is the absolute difference to current AMC information that should transmitting antenna of the AMC absolute magnitude of the transmitting terminal transmitting antenna of correspondence that calculates the receiving terminal feedback and preservation, and estimates that receiving terminal feeds back the Signal Interference and Noise Ratio (SINR) of the shared channel of this AMC absolute magnitude; Transmitting terminal is confirming that relatively this absolute difference that calculates is greater than first threshold value that sets in advance, and the SINR value that this estimation obtains is during less than second threshold value that sets in advance, and can judge that then mistake has taken place the AMC absolute magnitude to should transmitting antenna of receiving terminal feedback.
Step S20, transmitting terminal are under the situation about making a mistake in above-mentioned judged result, and the AMC absolute magnitude to should transmitting antenna of receiving terminal feedback is carried out treatment for correcting; Wherein transmitting terminal can select for use the wherein a kind of wrong AMC absolute magnitude to receiving terminal feedback in following two kinds of correcting modes to proofread and correct, with obtain proofreading and correct to AMC absolute magnitude that should transmitting antenna:
First kind of mode, transmitting terminal directly ignore receiving terminal feedback to AMC absolute magnitude that should transmitting antenna, and continue to use current preservation to current AMC information that should transmitting antenna AMC absolute magnitude as this transmitting antenna.
The second way, transmitting terminal at first calculate one with receiving terminal feedback to the relevant verification amount of AMC absolute magnitude that should transmitting antenna, and current AMC information and this verification amount that calculates to should transmitting antenna that will preserve carry out addition, and with the AMC absolute magnitude of addition result sum as this transmitting antenna.
Wherein in above-mentioned second kind of correcting mode, transmitting terminal can select one of following three kinds of account forms to calculate the relevant verification amount of determining with the receiving terminal feedback of AMC absolute magnitude as the case may be:
Verification amount account form one: transmitting terminal at first calculate receiving terminal feedback to AMC absolute magnitude that should transmitting antenna and preservation to the difference between should the current AMC information of transmitting antenna;
Transmitting terminal determine one greater than 0 less than 1 and become the dull coefficient that rises functional relation with SINR that receiving terminal feeds back the shared channel of this AMC absolute magnitude;
The processing of multiplying each other of difference that transmitting terminal obtains aforementioned calculation and the coefficient of determining, and with multiplied result as the corresponding check amount.
Verification amount account form two: transmitting terminal at first sets in advance a fixing AMC increment information;
Transmitting terminal judge receiving terminal feedback to AMC absolute magnitude that should transmitting antenna and preservation to the difference between should the current AMC information of transmitting antenna greater than 0 o'clock, the fixedly AMC increment information that directly will preset is as the corresponding check amount;
And transmitting terminal judge receiving terminal feedback to AMC absolute magnitude that should transmitting antenna and preservation to the difference between should the current AMC information of transmitting antenna less than 0 o'clock, the negative value of the fixedly AMC increment information that then will preset is as the corresponding check amount.
Verification amount account form three: transmitting terminal sets in advance one and becomes the dull AMC increment information that rises functional relation with SINR that receiving terminal feeds back the shared channel of this AMC absolute magnitude;
Transmitting terminal judge receiving terminal feedback to AMC absolute magnitude that should transmitting antenna and preservation to the difference between should the current AMC information of transmitting antenna greater than 0 o'clock, the AMC increment information that directly will preset is as the corresponding check amount;
And transmitting terminal judge receiving terminal feedback to AMC absolute magnitude that should transmitting antenna and preservation to the difference between should the current AMC information of transmitting antenna less than 0 o'clock, the negative value of the AMC increment information that then will preset is as the corresponding check amount.
Like this based on the main realization principle of the inventive method, just can realize the AMC absolute magnitude that transmitting terminal obtains based on treatment for correcting, and be combined in follow-up each that receives in AMC absolute magnitude reporting period to AMC relative quantity that should transmitting antenna, calculate in corresponding reporting period AMC information that should transmitting antenna.Promptly based on the inventive method principle, use in reporting period through the AMC of overcorrect absolute magnitude an AMC absolute magnitude, and utilize the follow-up AMC relative quantity that receives in the cycle in this report to calculate corresponding AMC information, bigger mistake can not taken place in the AMC information in whole reporting period that makes, thereby eliminated the harmful effect that specific implementation process caused the AMC technical scheme.
Be example with the AMC information in the inventive method principle with CQI information below, the present invention program's specific implementation process is explained in detail.Based on the applicant's enforcement, at first introduce Node B and judge whether right judgement method of the ACQI value receive in the first to file scheme:
A preferred version is when Node B receives the ACQI value of a corresponding transmit antennas at every turn, the absolute difference of calculating that this ACQI value that newly receives and Node B preserve to current C QI value that should transmitting antenna, if this absolute difference is greater than a predetermined threshold value DCQI_Th1, then Node B judges that this ACQI value that newly receives is wrong, needs to carry out the error correction process of back.
The another one preferred version is when Node B receives the ACQI value of a corresponding transmit antennas at every turn, the absolute difference of calculating that this ACQI value that newly receives and Node B preserve to current C QI value that should transmitting antenna, estimate to be used to feed back the SINR of the ACQI channel of ACQI information simultaneously, meet the following conditions if Node B judges simultaneously:
1. the ACQI value that receives and Node B preserve to the absolute difference of current C QI value that should transmitting antenna greater than the threshold value DCQI_Th2 that is scheduled to; And
2. the SINR of ACQI channel is lower than predetermined threshold value SINR_Th1;
Assert that then this ACQI value that newly receives is wrong, need to carry out the error correction process of back.
Wherein the SINR value of the ACQI channel that is used to feed back ACQI information is estimated to handle is prior art to Node B, and typical method is to carry out the estimation of SINR according to up dedicated pilot (being known reference symbol).
Introduce Node B below again and judging under the situation that the ACQI value that receives is a mistake, the wrong ACQI value that receives is carried out the method for treatment for correcting:
A preferred version is that Node B directly ignores the ACQI value that this newly receives, and continue to continue to use its preservation to current C urrent_CQI value that should transmitting antenna, promptly Current_CQI value that should transmitting antenna is remained unchanged.
Another preferred version be Node B will according to following account form upgrade preserve to Current_CQI value that should transmitting antenna:
Current_CQI
new＝Current_CQI
old+γ(ACQI-Current_CQI
old) (1)
Current_CQI in the formula (1)
NewCurrent_CQI after expression is upgraded; Current_CQI
OldExpression original C urrent_CQI; γ is less than 1 coefficient greater than 0, preferably this coefficient gamma and the receiving terminal SINR that is used to feed back the feedback channel that this ACQI value takies becomes the dull functional relation that rises, promptly γ is bigger when the SINR of this ACQI feedback channel is big, and hour γ is less as the SINR of this ACQI feedback channel.
Another preferred version be Node B will according to following account form upgrade preserve to Current_CQI value that should transmitting antenna:
Current_CQI
new＝Current_CQI
old+ρΔ
CQI (2)
Current_CQI in the formula (2)
NewCurrent_CQI after expression is upgraded; Current_CQI
OldExpression original C urrent_CQI; Coefficient ρ is+1 or-1, wherein works as ACQI-Current_CQI
OldACQI-Current_CQI is worked as in＞0 o'clock ρ=1
Old＜0 o'clock ρ=-1, Δ
CQIRepresent predetermined fixation of C QI increment size.
Another preferred version be Node B will according to following account form upgrade preserve to Current_CQI value that should transmitting antenna:
Current_CQI
new＝Current_CQI
old+ρΔ
CQI (3)
Current_CQI in the formula (3)
NewCurrent_CQI after expression is upgraded; Current_CQI
OldExpression original C urrent_CQI; Coefficient ρ is+1 or-1, wherein works as ACQI-Current_CQI
OldACQI-Current_CQI is worked as in＞0 o'clock ρ=1
Old＜0 o'clock ρ=-1, Δ
CQIRepresent predetermined CQI increment size, it becomes the dull functional relation that rises with the SINR that receiving terminal is used to feed back the feedback channel that this ACQI value takies, promptly when the SINR of this ACQI feedback channel Δ than greatly the time
CQIBigger, when the SINR of this ACQI feedback channel hour Δ
CQILess.
Can combination in any between two kinds of determination methods priority schemes wherein introducing in the foregoing description and the four kinds of bearing calibration preferred versions, be that any determination methods preferred version can make up with any bearing calibration preferred version, thereby finishing Node B proofreaies and correct the wrong ACQI value of certain transmitting antenna of correspondence of receiving terminal feedback, obtain the ACQI value after the treatment for correcting, and utilize the RCQI value that receives in reporting period at ACQI to should transmitting antenna calculate this report in the cycle to CQI value that should transmitting antenna, and then obtain in this report cycle, thereby eliminate the harmful effect that specific implementation process caused to the AMC technical scheme to CQI information that should transmitting antenna.
Accordingly, corresponding to the method principle of the above-mentioned proposition of the present invention, the proposition that the present invention is also corresponding here a kind of reliable reception device of self-adapting modulation coding information.As shown in Figure 8, be the main composition structured flowchart of the reliable reception device of self-adapting modulation coding information of the present invention, it mainly comprises judging unit 10 and correcting unit 20, and wherein the concrete effect of these two component units is as follows:
Judging unit 10 is used in the mobile communication system based on the MIMO technology, and transmitting terminal judges whether the AMC absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback mistake has taken place;
Correcting unit 20, the judged result that is used at above-mentioned judging unit 10 is to have taken place under the wrong situation, and the AMC absolute magnitude to should transmitting antenna of receiving terminal feedback is proofreaied and correct.
As shown in Figure 9, for the specific embodiment that increases the information calculations unit in apparatus of the present invention is formed structured flowchart, its on the main composition architecture basics of above-mentioned Fig. 8 also and then comprise information calculations unit 30, be used for the AMC absolute magnitude that obtains based on after above-mentioned correcting unit 20 treatment for correcting, and be combined in follow-up each that receives in AMC absolute magnitude reporting period to AMC relative quantity that should transmitting antenna, calculate the AMC absolute magnitude in reporting period to AMC information that should transmitting antenna.
As shown in figure 10, for first embodiment of judging unit in apparatus of the present invention forms structured flowchart, it comprises that mainly the first absolute difference computation subunit 110, first compares subelement 120 and first and judges subelement 130, and wherein each effect of forming subelement is as follows:
The first absolute difference computation subunit 110 is used for the absolute difference to current AMC information that should transmitting antenna that transmitting terminal calculates the AMC absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
Whether first subelement 120 relatively is used for absolute difference that the more above-mentioned first absolute difference computation subunit 110 calculates greater than a default threshold value;
First judges subelement 130, is used for above-mentioned first when relatively subelement 120 relatively draws absolute difference greater than default threshold value, judges that mistake has taken place the AMC absolute magnitude to should transmitting antenna of receiving terminal feedback.
As shown in figure 11, for second embodiment of judging unit in apparatus of the present invention forms structured flowchart, it comprises that mainly the second absolute difference computation subunit 140, channel estimating subelement 150, second compare subelement the 160, the 3rd and compare the subelement 170 and the second judgement subelement 180, and wherein each effect of forming subelement is as follows:
The second absolute difference computation subunit 140 is used for the absolute difference to current AMC information that should transmitting antenna that transmitting terminal calculates the AMC absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
Whether second subelement 160 relatively is used for this absolute difference that the comparison second absolute difference computation subunit 140 calculated greater than a preset first threshold;
Whether the 3rd subelement 170 relatively is used for SINR value that comparison channel estimating subelement 150 estimates to obtain less than a preset second threshold value;
Second judges subelement 180, be used for when the above-mentioned second comparison subelement 160 relatively draws absolute difference greater than preset first threshold, and the 3rd when relatively subelement 170 relatively draws SINR value less than the preset second threshold value, mistake has taken place in the AMC absolute magnitude to should transmitting antenna of judging that receiving terminal feeds back.
As shown in figure 12, for first embodiment of correcting unit in apparatus of the present invention forms structured flowchart, it mainly comprises ignores feedback information subelement 210 and information continues to use subelement 220, and wherein these two the concrete effects of forming subelements are as follows:
Ignore feedback information subelement 210, being used for transmitting terminal is to have taken place under the wrong situation in the judged result of above-mentioned judging unit 10, directly ignore receiving terminal feedback to AMC absolute magnitude that should transmitting antenna;
Information continue to be used subelement 220, be used for transmitting terminal continue to use current preservation to current AMC information that should transmitting antenna AMC absolute magnitude as this transmitting antenna.
As shown in figure 13, for second embodiment of correcting unit in apparatus of the present invention forms structured flowchart, it mainly comprises verification amount computation subunit 230 and addition subelement 240, and wherein these two the concrete effects of forming subelements are as follows:
Verification amount computation subunit 230, being used for transmitting terminal is to have taken place under the wrong situation in the judged result of above-mentioned judging unit 10, calculate one with receiving terminal feedback to the relevant verification amount of AMC absolute magnitude that should transmitting antenna;
Addition subelement 240, what be used for that transmitting terminal will preserve carries out addition to current AMC information that should transmitting antenna and verification amount that above-mentioned verification amount computation subunit 230 is calculated and handles, and with the AMC absolute magnitude of addition result sum as this transmitting antenna.
Wherein above-mentioned verification amount computation subunit 230 is calculated and is determined that the corresponding check amount has different implementations, please specifically with reference to the associated description in the said method, no longer gives here too much to give unnecessary details.
Wherein preferably in apparatus of the present invention mentioned AMC information can refer in particular to CQI information.Other concrete correlation techniques in wherein relevant apparatus of the present invention realize that details please refer to the associated description in the said method of the present invention, no longer gives too much to give unnecessary details here.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1, a kind of reliable receiving method of self-adapting modulation coding information is characterized in that, comprises step:
In the multiple-input and multiple-output mobile communication system, transmitting terminal judges whether the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback makes a mistake; And
Under situation about making a mistake, the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback is proofreaied and correct.
2, the method for claim 1 is characterized in that, also comprises step:
The Adaptive Modulation and Coding absolute magnitude that transmitting terminal obtains based on correction, and be combined in follow-up each that receives in Adaptive Modulation and Coding absolute magnitude reporting period to Adaptive Modulation and Coding relative quantity that should transmitting antenna, calculate in described reporting period self-adapting modulation coding information that should transmitting antenna.
3, the method for claim 1 is characterized in that, transmitting terminal judges that the process whether the Adaptive Modulation and Coding absolute magnitude makes a mistake specifically comprises:
Transmitting terminal calculates the absolute difference to current self-adapting modulation coding information that should transmitting antenna of the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation; And
In the absolute difference of relatively confirming to calculate during, judge that the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback makes a mistake greater than default threshold value.
4, the method for claim 1 is characterized in that, transmitting terminal judges that the process whether the Adaptive Modulation and Coding absolute magnitude makes a mistake specifically comprises:
Transmitting terminal calculates the absolute difference to current self-adapting modulation coding information that should transmitting antenna of the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation; And
Estimate that receiving terminal feeds back the Signal Interference and Noise Ratio of the shared channel of this Adaptive Modulation and Coding absolute magnitude;
Transmitting terminal in the absolute difference of relatively confirming to calculate greater than preset first threshold, and estimate the Signal Interference and Noise Ratio obtain less than when the preset second threshold value, judge that the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback makes a mistake.
5, the method for claim 1 is characterized in that, the process that described transmitting terminal is proofreaied and correct the Adaptive Modulation and Coding absolute magnitude specifically comprises:
Transmitting terminal ignore receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna; And
Continue to use preserve to current self-adapting modulation coding information that should transmitting antenna Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
6, the method for claim 1 is characterized in that, the process that described transmitting terminal is proofreaied and correct the Adaptive Modulation and Coding absolute magnitude specifically comprises:
Transmitting terminal calculate one with receiving terminal feed back to the relevant verification amount of Adaptive Modulation and Coding absolute magnitude that should transmitting antenna; And
With preserve to current self-adapting modulation coding information that should transmitting antenna and the verification amount addition that calculates Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
7, method as claimed in claim 6 is characterized in that, the process of described transmitting terminal calculation check amount specifically comprises:
Transmitting terminal calculates the difference to current self-adapting modulation coding information that should transmitting antenna to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation of receiving terminal feedback; And
Determine one greater than 0 less than 1 coefficient;
Transmitting terminal multiplies each other the difference that calculates and obtains described verification amount with the coefficient of determining.
8, method as claimed in claim 7 is characterized in that, described definite coefficient becomes the dull functional relation that rises with the Signal Interference and Noise Ratio that receiving terminal feeds back the shared channel of this Adaptive Modulation and Coding absolute magnitude.
9, method as claimed in claim 6 is characterized in that, the process of described transmitting terminal calculation check amount specifically comprises:
The Adaptive Modulation and Coding increment that transmitting terminal default is fixed; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna greater than 0 o'clock, with described fixing Adaptive Modulation and Coding increment as described verification amount; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna less than 0 o'clock, with the negative value of described fixing Adaptive Modulation and Coding increment as described verification amount.
10, method as claimed in claim 6 is characterized in that, the process of described transmitting terminal calculation check amount specifically comprises:
Transmitting terminal default one becomes the dull Adaptive Modulation and Coding increment that rises functional relation with the Signal Interference and Noise Ratio that receiving terminal feeds back the shared channel of this Adaptive Modulation and Coding absolute magnitude; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna greater than 0 o'clock, with described Adaptive Modulation and Coding increment as described verification amount; And
Receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna and preservation to the difference of current self-adapting modulation coding information that should transmitting antenna less than 0 o'clock, with the negative value of described Adaptive Modulation and Coding increment as described verification amount.
As the described method of 1～10 arbitrary claim, it is characterized in that 11, described self-adapting modulation coding information is a channel quality indication (CQI) information.
12, a kind of reliable reception device of self-adapting modulation coding information is characterized in that, comprising:
Judging unit is used in the multiple-input and multiple-output mobile communication system, and transmitting terminal judges whether the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback makes a mistake;
Correcting unit, the judged result that is used at judging unit is under the situation about making a mistake, and the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback is proofreaied and correct.
13, device as claimed in claim 12, it is characterized in that, also comprise the information calculations unit, be used for proofreading and correct the Adaptive Modulation and Coding absolute magnitude that obtains based on correcting unit, and be combined in follow-up each that receives in Adaptive Modulation and Coding absolute magnitude reporting period to Adaptive Modulation and Coding relative quantity that should transmitting antenna, calculate in described reporting period self-adapting modulation coding information that should transmitting antenna.
14, device as claimed in claim 12 is characterized in that, described judging unit specifically comprises:
The first absolute difference computation subunit is used for the absolute difference to current self-adapting modulation coding information that should transmitting antenna that transmitting terminal calculates the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
Whether first subelement relatively is used for absolute difference that the comparison first absolute difference computation subunit calculates greater than default threshold value;
First judges subelement, is used for first when relatively subelement relatively draws absolute difference greater than default threshold value, judges that mistake has taken place the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback.
15, device as claimed in claim 12 is characterized in that, described judging unit specifically comprises:
The second absolute difference computation subunit is used for the absolute difference to current self-adapting modulation coding information that should transmitting antenna that transmitting terminal calculates the Adaptive Modulation and Coding absolute magnitude of a transmitting antenna of correspondence of receiving terminal feedback and preservation;
The channel estimating subelement is used to estimate that receiving terminal feeds back the Signal Interference and Noise Ratio of the shared channel of this Adaptive Modulation and Coding absolute magnitude;
Whether second subelement relatively is used for absolute difference that the comparison second absolute difference computation subunit calculates greater than preset first threshold;
Whether the 3rd subelement relatively is used for Signal Interference and Noise Ratio that comparison channel estimating subelement estimates to obtain less than the preset second threshold value;
Second judges subelement, be used for comparing subelement and relatively draw absolute difference greater than preset first threshold second, and, judge that mistake has taken place the Adaptive Modulation and Coding absolute magnitude to should transmitting antenna of receiving terminal feedback the 3rd when relatively subelement relatively draws Signal Interference and Noise Ratio less than the preset second threshold value.
16, device as claimed in claim 12 is characterized in that, described correcting unit specifically comprises:
Ignore the feedback information subelement, being used for transmitting terminal is under the situation about making a mistake in the judged result of judging unit, ignore receiving terminal feedback to Adaptive Modulation and Coding absolute magnitude that should transmitting antenna;
Information continue to be used subelement, be used for transmitting terminal continue to use preserve to current self-adapting modulation coding information that should transmitting antenna Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
17, device as claimed in claim 12 is characterized in that, described correcting unit specifically comprises:
Verification amount computation subunit, being used for transmitting terminal is under the situation about making a mistake in the judged result of judging unit, calculate one with receiving terminal feedback to the relevant verification amount of Adaptive Modulation and Coding absolute magnitude that should transmitting antenna;
The addition subelement, be used for preserve to current self-adapting modulation coding information that should transmitting antenna and verification amount addition that verification amount computation subunit calculates Adaptive Modulation and Coding absolute magnitude as this transmitting antenna.
As the described device of 12～17 arbitrary claims, it is characterized in that 18, described self-adapting modulation coding information is a channel quality indication (CQI) information.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035582A (en) * | 2009-09-29 | 2011-04-27 | 索尼公司 | Wireless transmission system, wireless communication device, and wireless communication method |
| CN102223211A (en) * | 2010-04-13 | 2011-10-19 | 华为技术有限公司 | Method and apparatus for processing business data of multi-antenna |
| CN101183890B (en) * | 2007-12-12 | 2012-06-13 | 中兴通讯股份有限公司 | Code book based CQI feedback method for multi-user precoding system |
| CN101582711B (en) * | 2008-05-14 | 2012-08-01 | 电信科学技术研究院 | Method, system and device for selecting antenna mode |
| CN108400833A (en) * | 2017-02-06 | 2018-08-14 | 上海诺基亚贝尔股份有限公司 | Communication means and communication equipment |
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2006
- 2006-04-29 CN CN 200610079112 patent/CN101043257A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183890B (en) * | 2007-12-12 | 2012-06-13 | 中兴通讯股份有限公司 | Code book based CQI feedback method for multi-user precoding system |
| CN101582711B (en) * | 2008-05-14 | 2012-08-01 | 电信科学技术研究院 | Method, system and device for selecting antenna mode |
| CN102035582A (en) * | 2009-09-29 | 2011-04-27 | 索尼公司 | Wireless transmission system, wireless communication device, and wireless communication method |
| CN102035582B (en) * | 2009-09-29 | 2014-08-20 | 索尼公司 | Wireless transmission system, wireless communication device, and wireless communication method |
| CN102223211A (en) * | 2010-04-13 | 2011-10-19 | 华为技术有限公司 | Method and apparatus for processing business data of multi-antenna |
| CN108400833A (en) * | 2017-02-06 | 2018-08-14 | 上海诺基亚贝尔股份有限公司 | Communication means and communication equipment |
| US10993217B2 (en) | 2017-02-06 | 2021-04-27 | Alcatel Lucent | Communication method and device |
| CN108400833B (en) * | 2017-02-06 | 2021-12-24 | 上海诺基亚贝尔股份有限公司 | Communication method and communication device |
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