CN102448113B - Method and system for sending periodical channel state information - Google Patents
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Abstract
The invention discloses a method and a system for sending periodical channel state information. The method comprises two modes of: jointly coding channel quality indicators/precoding matrix indication and order indication, and sending through an uplink physical control channel, or multiplexing the channel quality indicators/precoding matrix indication and order indication on an uplink physical sharing channel to send. The method disclosed by the invention is applied to fully utilize current channel coding resource to joint the channel quality indicators/precoding matrix indication and order indication when the channel quality indicators/precoding matrix indication and order indication are in conflict, so that the base station can timely obtain the downlink channel information, the downlink DCIO expenses can be saved, and the transmission efficiency and the reliability of downlink data can be improved.
Description
Technical field
The present invention relates to the communications field, especially relate to the sending method of periodical channel state information in a kind of LTE (Long Term Evolution, Long Term Evolution) system.
Background technology
In the down link of LTE system, base station is with certain hour interval pilot signal transmitted, UE (user equipment, subscriber equipment) measure the information of down channel according to this pilot signal, comprise CQI (Channel Quality Indicator, CQI)/PMI (Pre-coding Matrix Indicator, pre-coding matrix instruction) and RI (Rank Indicator, order instruction).Then to these downlink channel condition informations of base station feedback.Base station dispatcher is according to this downlink channel condition information of UE feedback, carry out scheduling of resource (resource scheduling) and adaptive modulation and coding (adaptive modulation and coding, AMC), thereby ensureing on the basis of certain downlink transfer reliability, by the validity maximization of downlink transfer.
The modulation system of descending transmission is selected in base station according to the CQI in downlink channel condition information, if CQI is larger, high order modulation can be selected in base station so, improves the validity of transfer of data; Select pre-coding matrix according to the PMI in downlink channel condition information, can reduce the complexity of UE side decoding; Determine the suitable transmission number of plies according to the RI in downlink channel condition information, i.e. independent subchannels number, thus can carry out optimal utilization to channel characteristics, improve transmission rate.
UE can come to base station feedback downlink channel condition information by aperiodic and cycle two kinds of modes.Periodic feedback and non-periodic feedback use respectively different physical channels.In LTE, uplink physical channel comprises: ascending physical signal shared channel (Physical Uplink Control Channel, PUCCH), ascending physical signal control channel (Physical Uplink Shared Channel, PUSCH) and Physical Random Access Channel.
For mode aperiodic, downlink channel condition information feeds back on PUSCH.The downlink channel condition information of UE feedback measurement, by channel quality indication request (CQI Request) territory in descending control information format 0 (DCI format 0) is put to 1, is indicated in base station.
For periodic mode, in the time not having upstream data to send, periodically downlink channel condition information sends on PUCCH.LTE system definition multiple PUCCH form (format), comprise PUCCH format1/1a/1b and format 2/2a/2b, wherein format 2/2a/2b is for sending the downlink channel condition information in cycle.Illustrate as an example of CQI/PMI example below, as table 1 has provided the feedback model that CQI/PMI supported in cycle, and the feedback model that user side (UE, User Equipment) uses is by the semi-static configuration of high level; When existing upstream data has again down channel feedback information, upstream data and periodicity downlink channel condition information are sent on PUSCH.
Table 1:
Disturb in order to eliminate between the subchannel causing due to multipath transmisstion simultaneously; using a part for the regulation at the rear portion of transmission data as protection interval (Guard Interval; GI) be attached to the beginning of data division; this protection interval is also called Cyclic Prefix (Cyclic Prefix; CP), comprise regular circulation prefix (Normal CP) and extended cyclic prefix (Extended CP).During cycle sends, base station is UE configuration cycle property report cycle and sub-frame offset by RRC (Radio Resource Control, Radio Resource control) signaling, the moment feedback of down channel state information that UE is specifying.
For periodically CQI/PMI of broadband, the transmission subframe of CQI/PMI is determined by formula below:
Wherein, N
oFFSET, CQIrefer to the transmission skew of CQI, N
prefer to that CQI sends cycle, n
frefer to System Frame Number, n
srefer to timeslot number.
The transmission subframe of RI is determined by formula below:
Wherein, N
oFFSET, RIrefer to the transmission skew of RI, the number of subframes shifting to an earlier date with respect to CQI, M
rIbe used for characterizing RI and send the cycle, both value condition are as shown in table 2.
Table 2:
Existing protocol regulation, in the time that the transmission subframe of the CQI/PMI calculating by formula and RI is conflicted, can abandon CQI/PMI, only sends RI.N in analytical table 2
oFFSET, RIand M
rIvalue known, there are so a kind of special circumstances: work as I
rI=0 o'clock, N
oFFSET, RI=0, M
rI=1, the formula that calculates RI transmission subframe is in full accord with the formula that calculates CQI/PMI transmission subframe, and the transmission subframe of RI and CQI/PMI always clashes, and CQI/PMI is dropped.Obviously, in this case, if some special scheduling strategies are not taked in base station, cannot obtain CQI/PMI information, while causing base station selected order of modulation and pre-coding matrix, lack important foundation, the reliability of downlink transfer and validity cannot ensure, the reliability of UE side decoding can reduce, thereby reduces the descending performance of whole LTE system.If solve this problem by base station scheduling strategy, certainly will allow base station carry out DCI0 scheduling frequently, thereby increase the expense of downlink signaling.
Summary of the invention
The main technical problem to be solved in the present invention is, a kind of sending method and system of periodical channel state information is provided, and the method and system can be saved descending DCI0 expense, have improved the validity and reliability of downlink data transmission.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The sending method of periodical channel state information and a system, described periodical channel state information comprises the instruction of CQI/pre-coding matrix and order instruction that periodically send, said method comprising the steps of:
In the time that described periodical channel state information sends on ascending physical signal control channel, the instruction of described CQI/pre-coding matrix and described order instruction are carried out on described ascending physical signal control channel, sending after (20, A) channel combined coding;
In the time that described periodical channel state information sends on ascending physical signal shared channel, the instruction of described CQI/pre-coding matrix is sent on described ascending physical signal shared channel with described order instruction is multiplexing.
The method is applicable in the time that the instruction of described CQI/pre-coding matrix is indicated situation about clashing with order.
Said method also comprises: in the time that described periodical channel state information sends on ascending physical signal control channel, regular circulation prefix subframe if, the instruction of described CQI/pre-coding matrix and described order instruction are carried out to (20, A) channel combined coding, and will confirm that answering/no answering is attached to the instruction of described CQI/pre-coding matrix and on described ascending physical signal control channel, sends afterwards with the channel combined coding bit of described order instruction; Extended cyclic prefix subframe if, carries out the instruction of described CQI/pre-coding matrix and described order instruction and confirmation answering/no answering on described ascending physical signal control channel, to send after (20, A) channel combined coding.
Further, said method also comprises: when for extended cyclic prefix, if the instruction of described CQI/pre-coding matrix, the instruction of described order are greater than (20 with the original bit sum of described confirmation answering/no answering, A) the original input bit of chnnel coding, abandons the instruction of described CQI/pre-coding matrix.
Said method also comprises: in the time that described periodical channel state information sends on ascending physical signal shared channel, confirm answering/no answering if existed, by the instruction of described CQI/pre-coding matrix with described order instruction and described confirmation answering/no answering is multiplexing sends on described ascending physical signal shared channel.
The present invention also provides a kind of system that sends periodical channel state information, described periodical channel state information comprises the instruction of CQI/pre-coding matrix and order instruction that periodically send, described system comprises the first coding module and the first sending module, and second coding module and the second sending module, described the first coding module is connected with described the first sending module, and described the second coding module is connected with described the second sending module; Described the first coding module and described the second coding module described periodic status channel information that is used for encoding, described the first sending module is for sending the periodical channel state information after described the first coding module coding, and described the second sending module is for sending the periodical channel state information after described the second coding module coding.
Described system is applicable in the time that the instruction of described CQI/pre-coding matrix is indicated situation about clashing with order.
Wherein said the first coding module comprises confirms subframe judging unit, prefix recognition unit and combined coding unit, and described confirmation subframe judging unit, described prefix recognition unit and described combined coding unit are connected successively; Described confirmation subframe unit is used for judging whether existing confirmation answering/no answering subframe; Described prefix recognition unit is for judging whether the subframe of transmission is regular circulation prefix subframe; When described confirmation subframe judging unit judged result is when being, described combined coding unit is for when described prefix recognition unit judged result is when being, the instruction of described CQI/pre-coding matrix and described order instruction are carried out to (20, A) channel combined coding, obtain the first combined coding bit, then confirmation answering/no answering is connected on after described the first combined coding bit; When described prefix recognition unit judged result is while being no, described combined coding unit is for being undertaken (20 by the instruction of described CQI/pre-coding matrix and described order instruction and confirmation answering/no answering, A) channel combined coding, obtains the second combined coding bit.
Wherein said combined coding unit comprises sub-frame size judgment sub-unit and coding subelement, and described sub-frame size judgment sub-unit is connected with coding subelement; Described sub-frame size judging unit is for when described subframe judging unit judged result is while being no, judge whether the original bit sum of the instruction of described CQI/pre-coding matrix, the instruction of described order and described confirmation answering/no answering is greater than the original input bit of (20, A) chnnel coding; Described coding subelement is for when described sub-frame size judgment sub-unit judged result is when being, order indicated and confirmation answering/no answering carries out (20, A) channel combined coding, obtains the 3rd combined coding bit.
Wherein said the second coding module comprises multiplexing and encoding unit and confirmation subframe judging unit, and described confirmation subframe judging unit is connected with described multiplexing and encoding unit; Described confirmation subframe unit is used for judging whether existing confirmation answering/no answering subframe; , for when described confirmation subframe judging unit judged result is when being, indicate the instruction of described CQI/pre-coding matrix and described order and described confirmation answering/no answering multiplexing and encoding described multiplexing and encoding unit.
The invention has the beneficial effects as follows: adopt (20 with respect to existing protocol, A) in channel coding method, in the time that the instruction of periodical channel state information order clashes with the instruction of CQI/pre-coding matrix, directly abandon the mode of CQI/pre-coding matrix instruction, the present invention has adopted utilization (20, A) instruction of channel encoder combined coding CQI/pre-coding matrix sends after indicating with order on ascending physical signal control channel, and the instruction of CQI/pre-coding matrix and order instruction concurrent multiplexing on ascending physical signal shared channel, are sent two kinds of modes by employing.The present invention takes full advantage of (20, A) resource of chnnel coding, by the instruction of CQI/pre-coding matrix and order instruction combined coding, and utilize on ascending physical signal shared channel the instruction of while CQI/pre-coding matrix is indicated to multiplexing mode with order, ensure that base station can be in most scenes, ensure that base station obtains downlink channel condition information in time, solve former protocols having under customized configuration, extra scheduling need to be carried out in base station just can obtain CQI/pre-coding matrix indication problem, save descending DCI0 expense, thereby improve the validity and reliability of downlink data transmission.
Brief description of the drawings
Fig. 1 is that the UE of an embodiment of the present invention sends the periodically flow chart of property channel condition information;
Fig. 2 is the transmitting system of the periodical channel state information that Fig. 1 is corresponding.
Embodiment
Channel condition information comprises CQI/PMI and RI etc., and UE sends the mode of this channel condition information for periodically sending and aperiodicity transmission to base station, and the channel condition information that we periodically send UE to base station is herein defined as periodical channel state information.
For the mode of periodicity transmitting channel state information, in the time not having upstream data to send, periodically downlink channel condition information sends on PUCCH; When existing upstream data has again down channel feedback information, upstream data and periodicity downlink channel condition information are sent on PUSCH.
In existing protocol, if periodical channel state information sends on PUCCH, the channel coding method of employing is (20, A) chnnel coding, is shown below:
Wherein, b
ifor coded bit, a
nfor original bit, M
i, nfor the basic sequence of (20, A) coding, shown in table 3.
Table 3:
| i | M i，0 | M i，1 | M i，2 | M i，3 | M i，4 | M i，5 | M i，6 | M i，7 | M i，8 | M i，9 | M i，10 | M i，11 | M i，12 |
| 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
| 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 |
| 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| 3 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| 4 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |
| 5 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| 6 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| 7 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| 8 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
| 9 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 |
| 10 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
| 11 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 |
| 12 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| 13 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
| 14 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 |
| 15 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
| 16 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 |
| 17 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 |
| 18 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 19 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
As can be seen from Table 4, the original bit number of (20, A) chnnel coding mostly is 13bit most.Periodically the CQI/PMI of downlink channel condition information mostly is 11bit most, and RI mostly is 2bit most, the maximum 2bit of ACK/NACK.Existing protocol regulation, in the time that RI and CQI/PMI clash, abandons CQI/PMI.
Table 4:
But, for Normal CP, no matter whether there is ACK/NACK, when the CQI/PMI in periodical channel state information or RI send on PUCCH, through (20, A) the original bit number before chnnel coding mostly is 11 most, (20, A) chnnel coding still has 2 original bit to utilize, and RI mostly is 2 bits most, therefore when CQI/PMI and RI clash, can consider to allow RI and CQI/PMI send completely simultaneously.
For Extended CP, because reference symbol number is little, in order to improve the reliability of ACK/NACK decoding, need to carry out (20, A) channel combined coding to the RI in ACK/NACK and periodical channel state information and/or CQI/PMI.RI or CQI/PMI and ACK/NACK, in the time of (20, A) coding, without ACK/NACK in the situation that, in the time that RI and CQI/PMI clash, can allow RI and CQI/PMI utilize (20, A) the associating transmission of encoding.In the situation that having ACK/NACK, in the time that RI and CQI/PMI clash, as can be seen from Table 3, only at broadband CQI/PMI, 4 transmitting antennas, and in the situation of RI > 1, total bit number of RI and CQI/PMI is greater than 11, now cannot utilize (20, A) to carry out combined coding to RI, CQI/PMI and ACK/NACK, so, abandon CQI/PMI.In other situations, total bit number of RI and CQI/PMI mostly is 11 most, and (20, A) coding still has 2 original bit to utilize, therefore can be by RI, CQI/PMI and ACK/NACK combined coding.
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
The sending method that the invention provides a kind of periodical channel state information, comprises the following steps:
1.1), in the time that periodical channel state information sends on PUCCH, RI, CQI/PMI are carried out on PUCCH, sending after (20, A) channel combined coding;
1.2) in the time of situation that CQI/PMI and RI clash, Normal CP if, CQI/PMI and RI are carried out to (20, A) channel combined coding, obtain the first combined coding, if there is ACK/NACK, and after being attached to the first combined coding, ACK/NACK sends on PUCCH;
In the time that CQI/PMI and RI clash, due to CQI/PMI and maximum 13 bits of the total bit number of RI, and (20, A) the original coding input bit of channel is 13 bits, therefore, (20, A) channel can be made full use of by both combined codings, and the mode that abandons CQI/PMI in existing protocol need not be adopted.
1.3) Extent CP if, carries out CQI/PMI and RI and ACK/NACK on PUCCH, to send after (20, A) channel combined coding.
Extended CP if, because reference symbol is less, for the success rate that ensures that ACK/NACK sends, therefore must carry out ACK/NACK also (20, A) coding.And only have when feedback content be broadband CQI/PMI, feedback model is 4 transmitting antennas, and RI > 1, in the situation that the Report mode Mode1-1 of PUCCH is 11bits/BP, in periodical channel state information, total bit number of RI and CQI/PMI is just greater than 11 bits, now total bit number of RI, CQI/PMI and ACK/NACK three is greater than (20, A) channel original coding input bit number, therefore abandon CQI/PMI, only RI is combined with ACK/NACK and carry out on PUCCH, sending after (20, A) coding.
Other most situations, in periodical channel state information, total bit number of RI and CQI/PMI is not more than 11 bits, and the original bit of ACK/NACK mostly also is most 2 bits, now, total bit number of three meets and is less than or equal to (20, A) channel original coding input bit number therefore carries out ACK/NACK on PUCCH, sending after (20, A) combined coding together with periodical channel state information RI, CQI/PMI.
With respect to prior art, present embodiment has ensured the reliability of ACK/NACK decoding, also ensured in most of scenes, in the time that CQI/PMI and RI clash, base station can obtain CQI/PMI, thereby in the time of base station selected order of modulation and pre-coding matrix, important foundation is provided, ensure reliability and the validity of downlink transfer, improved the reliability of UE side decoding, thereby promoted the descending performance of whole LTE system.Meanwhile, taking full advantage of (20, A) channel resource encodes.
2.1) in the time that periodical channel state information sends on PUSCH, by CQI/PMI and RI is multiplexing sends on described ascending physical signal shared channel.
2.2), if there is ACK/NACK, send on PUSCH multiplexing together with CQI/PMI to ACK/NACK, RI.
With respect to prior art, present embodiment has been avoided in the time that CQI/PMI and RI clash, and base station abandons CQI/PMI, thereby has ensured that base station can obtain CQI/PMI in time, during for base station selected order of modulation and pre-coding matrix, provides important foundation.
The present invention has adopted the send mode of two kinds of periodical channel state informations, the one, on PUCCH, send periodical channel state information, and in the time that the CQI/PMI in periodical channel state information and RI clash, do not abandon CQI/PMI, but make full use of (20, A) resource of chnnel coding, carries out the transmission of (20, A) channel combined coding by RI and/or CQI/PMI; The 2nd, on PUSCH, send periodically downlink channel condition information and upstream data, in the time that the RI in periodical channel state information and CQI/PMI clash, do not abandon CQI/PMI, RI and CQI/PMI concurrent multiplexing are sent to PUSCH.With respect to existing protocol, in the time that the RI in periodical channel state information and CQI/PMI clash, abandon the mode of CQI/PMI, the present invention makes full use of existing channel coding resource, do not abandon the mode of CQI/PMI, ensure in most of scenes, base station can obtain downlink channel condition information in time, comprise RI, CQI/PMI, thereby in the time of base station selected order of modulation and pre-coding matrix, important foundation is provided, solve former protocols having under customized configuration, extra scheduling need to be carried out and just can obtain the problem of CQI/PMI in base station, thereby save descending DCI0 expense, improve the validity and reliability of downlink data transmission.
Please refer to Fig. 2, the present invention also provides a kind of system that sends periodic status information, comprise: the first coding module and the second coding module and the first sending module and the second sending module, this first coding module is connected with the first sending module, and the second coding module is connected with the second sending module.
Wherein the first coding module and the second coding module described periodical channel state information that is used for encoding, described the first sending module is for sending the periodical channel state information after described the first coding module coding, and described the second sending module is for sending the periodical channel state information after described the second coding module coding.And this first coding module comprises confirms subframe judging unit, prefix recognition unit and combined coding unit, this confirmation subframe judging unit, prefix recognition unit are connected successively with combined coding unit.This confirmation subframe unit is used for judging whether to exist ACK/NACK; Whether this prefix recognition unit is Normal CP for the subframe of identifying transmission; This combined coding unit, for when described prefix recognition unit judged result is when being, carries out (20, A) channel combined coding by RI and CQI/PMI, obtains the first combined coding bit, then ACK/NACK is connected on after described the first combined coding bit; When this prefix recognition unit judged result is while being no, this combined coding unit, for ACK/NACK, RI and ACK/NACK are carried out to (20, A) channel combined coding, obtains the second combined coding bit.Wherein the second coding module comprises multiplexing and encoding unit and confirms subframe judging unit, and this confirmation subframe judging unit is connected with multiplexing and encoding unit; This confirmation subframe unit is used for judging whether to exist ACK/NACK subframe; This multiplexing and encoding unit is for when this confirmation subframe judging unit judged result is when being, by ACK/NACK, RI multiplexing and encoding together with CQI/PMI.
Below in conjunction with specific embodiment and Fig. 1, the present invention is described in further detail.
1, all transmission flows all the configuration based on UE (or reprovision) come into force.
2, judge whether this subframe has PUSCH (DCI0=1), and cqirequest=1, be to send non-periodical channel state information by the second sending module; Otherwise enter step 3.
3, judge this subframe whether periodically CQI/PMI and RI send subframe, be, enter step 4 otherwise, no matter this channel condition information is cycle or aperiodic, does not send.
4, judging whether this subframe exists PUSC (DCI0=1), is to enter step 5; Otherwise enter step 6.
5, the confirmation subframe judging unit of the second coding module judges whether this subframe exists ACK/NACK, be, the multiplexing and encoding unit of the second coding module ACK/NACK is multiplexing together with periodical channel state information after, sent on PUSCH by the second sending module, otherwise, directly, by this periodical channel state information multiplexing transmission on PUSCH, even if the CQI/PMI in this periodical channel state information and RI clash, do not abandon CQI/PMI yet.
6, the confirmation subframe judging unit of the first coding module judges whether this subframe exists ACK/NACK, is, enters step 7; Otherwise combined coding unit is undertaken (20 by the RI in periodical channel state information and CQI/PMI, A) after channel combined coding, on PUCCH, adopt format2 to send by the first sending module, even if RI and CQI/PMI clash, do not abandon CQI/PMI yet.
Because in the time that the RI in periodical channel state information and CQI/PMI clash, suppose that RI original bit is:
a
j(j＝0，1，...，A-1)，
Wherein A is RI original bit number, A≤2 bit;
CQI/PMI original bit is: b
i(i=0,1 ..., B-1),
Wherein B is CQI/PMI original bit number, B≤11 bit;
Therefore total bit number is less than or equal to (20, A) original coding input bit number 13 bits of chnnel coding, can carry out (20, A) channel combined coding by the CQI/PMI of periodical channel state information and RI, (20, A) coding input original bit is: s
i=b
i(i=0,1 ..., B-1), s
b+j=a
j(j=0,1 ..., A-1), total bit is A+B≤13 bit.
7, prefix recognition unit determines whether Normal CP, be, combined coding unit is undertaken (20 by periodical channel state information RI and CQI/PMI, A) channel combined coding, then after ACK/NACK original bit being appended to coded-bit, then on PUCCH, adopt format2a or format2b to send by the first sending module.Even if both send subframe and clash, can not abandon CQI/PMI yet; Otherwise, enter step 8.
Because of in the time that the RI in periodical channel state information and CQI/PMI clash, the original input bit of (20, A) chnnel coding: s
i=b
i(i=0,1 ..., B-1), s
b+j=a
j(j=0,1 ..., A-1), suppose that coded bit is c
k=(k=0,1 ..., C-1), wherein C=20, ACK/NACK original bit is: d
l=(l=0,1 ... D), wherein D is ACK/NACK original bit number, D≤2 bit, final transmission bit is:
T
k=c
k(k=0,1 ..., C-1), t
c+l=d
l, wherein C=20 bit.
8, sub-frame size judgment sub-unit judges whether total bit number of periodical channel state information RI and CQI/PMI is greater than 11, be, in the time of the RI in periodical channel state information and CQI/PMI conflict, the subelement of encoding abandons CQI/PMI, only RI is combined and carries out (20 with ACK/NACK, A) chnnel coding, then on PUCCH, adopt format2 to send by the first sending module; Otherwise enter step 9.
9, coding subelement is combined periodical channel state information and is carried out (20, A) and encode with ACK/NACK, then on PUCCH, adopts format2 to send by the first sending module.Even if the RI in periodical channel state information and CQI/PMI clash, do not abandon CQI/PMI yet.
Because for (20, A) original bit 13 bits of chnnel coding input, total bit number of cycle channel information RI and CQI/PMI is less than or equal to 11 bits, and the bit number of ACK/NACK mostly is 2 bits most, three's satisfied 13 bits that are less than or equal to of total bit number, therefore, three can be carried out to (20, A) channel combined coding.In the time that RI and CQI/PMI clash, the original bit of (20, A) coding input is:
wherein A≤2 bit, B≤11 bit, and A+B≤11 bit, D≤2 bit, A+B+D≤13 bit.When combined coding, ACK/NACK should be placed on RI and/or CQI/PMI after.
The present embodiment is example, and system of the present invention is not limited to the present embodiment, and system of the present invention can also have other execution mode.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. the sending method of a periodical channel state information, described periodical channel state information comprises the instruction of CQI/pre-coding matrix and order instruction that periodically send, it is characterized in that, described sending method is applied to the instruction of described CQI/pre-coding matrix and indicates in situation about clashing with order, said method comprising the steps of:
In the time that described periodical channel state information sends on ascending physical signal control channel, the instruction of described CQI/pre-coding matrix and described order instruction are carried out to (20, A) after channel combined coding, on described ascending physical signal control channel, send, regular circulation prefix subframe if, the instruction of described CQI/pre-coding matrix and described order instruction are carried out to (20, A) channel combined coding, and will confirm that answering/no answering is attached to the instruction of described CQI/pre-coding matrix and on described ascending physical signal control channel, sends afterwards with the channel combined coding bit of described order instruction, extended cyclic prefix subframe if, carries out the instruction of described CQI/pre-coding matrix and described order instruction and confirmation answering/no answering on described ascending physical signal control channel, to send after (20, A) channel combined coding,
In the time that described periodical channel state information sends on ascending physical signal shared channel, the instruction of described CQI/pre-coding matrix is sent on described ascending physical signal shared channel with described order instruction is multiplexing.
2. sending method as claimed in claim 1, it is characterized in that, also comprise when for extended cyclic prefix, if the instruction of described CQI/pre-coding matrix, the instruction of described order are greater than (20 with the original bit sum of described confirmation answering/no answering, A) the original input bit of chnnel coding, abandons the instruction of described CQI/pre-coding matrix.
3. sending method as claimed in claim 1, it is characterized in that, also comprise in the time that described periodical channel state information sends on ascending physical signal shared channel, confirm answering/no answering if existed, by the instruction of described CQI/pre-coding matrix with described order instruction and described confirmation answering/no answering is multiplexing sends on described ascending physical signal shared channel.
4. one kind sends the system of periodical channel state information, described periodical channel state information comprises the instruction of CQI/pre-coding matrix and order instruction that periodically send, it is characterized in that, described system applies is indicated in situation about clashing with order in the instruction of described CQI/pre-coding matrix, described system comprises the first coding module and the first sending module, and second coding module and the second sending module, described the first coding module is connected with described the first sending module, described the second coding module is connected with described the second sending module, described the first coding module is for being undertaken (20 by the instruction of described CQI/pre-coding matrix and described order instruction, A) channel combined coding, described the first coding module comprises confirms subframe judging unit, prefix recognition unit and combined coding unit, and described confirmation subframe judging unit, described prefix recognition unit and described combined coding unit are connected successively, described confirmation subframe judging unit is used for judging whether existing confirmation answering/no answering subframe, whether described prefix recognition unit is regular circulation prefix subframe for the subframe of identifying transmission, described combined coding unit is for when described prefix recognition unit judged result is when being, the instruction of described CQI/pre-coding matrix and described order instruction are carried out to (20, A) channel combined coding, obtain the first combined coding bit, then confirmation answering/no answering is connected on after described the first combined coding bit, when described prefix recognition unit judged result is while being no, described combined coding unit is for being undertaken (20 by the instruction of described CQI/pre-coding matrix and described order instruction and confirmation answering/no answering, A) channel combined coding, obtain the second combined coding bit, described the first sending module for sending the periodical channel state information after described the first coding module coding on ascending physical signal control channel, described the second coding module is for multiplexing with described order instruction by the instruction of described CQI/pre-coding matrix, described the second sending module for sending the periodical channel state information after described the second coding module coding on ascending physical signal shared channel.
5. system as claimed in claim 4, is characterized in that, described combined coding unit comprises sub-frame size judgment sub-unit and coding subelement, and described sub-frame size judgment sub-unit is connected with coding subelement; Described sub-frame size judging unit is for when described prefix recognition unit judged result is while being no, judge whether the original bit sum of the instruction of described CQI/pre-coding matrix, the instruction of described order and described confirmation answering/no answering is greater than the original input bit of (20, A) chnnel coding; Described coding subelement is for when described sub-frame size judgment sub-unit judged result is when being, order indicated and confirmation answering/no answering carries out (20, A) channel combined coding, obtains the 3rd combined coding bit.
6. system as claimed in claim 5, is characterized in that, described the second coding module comprises multiplexing and encoding unit and confirmation subframe judging unit, and described confirmation subframe judging unit is connected with described multiplexing and encoding unit; Described confirmation subframe judging unit is used for judging whether existing confirmation answering/no answering subframe; , for when described confirmation subframe judging unit judged result is when being, indicate the instruction of described CQI/pre-coding matrix and described order and described confirmation answering/no answering multiplexing and encoding described multiplexing and encoding unit.
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| CN103580798B (en) * | 2012-08-07 | 2017-12-05 | 中兴通讯股份有限公司 | The distribution on transmission opportunity, the computational methods of uplink subframe number and device |
| RU2633154C2 (en) * | 2013-03-22 | 2017-10-11 | Фудзицу Лимитед | Method and device for configuring channel quality indicator, and method and device for configuring modulation and encoding scheme |
| US9491777B2 (en) * | 2014-01-10 | 2016-11-08 | Qualcomm Incorporated | Techniques for prioritizing the reporting of uplink control information for cells utilizing contention based radio frequency spectrum |
| CN105871516A (en) * | 2015-01-23 | 2016-08-17 | 北京信威通信技术股份有限公司 | Method, devices and system for feeding back vertical-dimensional channel state information |
| KR102517868B1 (en) * | 2015-08-13 | 2023-04-04 | 한국전자통신연구원 | terminal for transmitting periodical CSI feedback information |
| CN107925506B (en) * | 2015-08-14 | 2020-12-15 | 华为技术有限公司 | Method and device for transmitting uplink control information |
| US10103857B2 (en) * | 2015-09-16 | 2018-10-16 | Samsung Electronics Co., Ltd. | Signaling methods and apparatus for advanced MIMO communication systems |
| CN106685576B (en) * | 2015-11-05 | 2019-07-05 | ***通信集团公司 | A kind of method, apparatus of feeding back channel state information, terminal and base station |
| WO2018084790A1 (en) | 2016-11-04 | 2018-05-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Ack/nack transmission strategies |
| CN109891793B (en) * | 2016-11-04 | 2022-04-12 | 瑞典爱立信有限公司 | Radio node and method of operating a node |
| US10749583B2 (en) * | 2017-06-14 | 2020-08-18 | Lg Electronics Inc. | Method for transmitting and receiving channel state information in wireless communication system and device for the same |
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