CN103209053B

CN103209053B - A kind of information bit sending method, device and system

Info

Publication number: CN103209053B
Application number: CN201310111114.9A
Authority: CN
Inventors: 陈小锋; 吕永霞; 成艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2016-08-03
Anticipated expiration: 2030-09-08
Also published as: CN103209053A

Abstract

The embodiment of the invention discloses a kind of information bit sending method, Apparatus and system.Wherein information bit transfer approach comprises the following steps: information bit to be transmitted is divided at least two groups；Encode often organizing information bit to be transmitted；Being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Modulation symbol is mapped and sends.Receiving terminal so can be facilitated to reduce algorithm complex, thus ensure the performance of receiving terminal.

Description

A kind of information bit sending method, device and system

Technical field

The present invention relates to communication technical field, particularly relate to a kind of information bit sending method, device and system.

Background technology

At Long Term Evolution (LongTermEvolutionAdvanced, LTE-A) in system, uplink physical channel includes: ascending physical signal shares channel (PhysicalUplinkSharedChannel, PUSCH), ascending physical signal controls channel (: PhysicalUplinkControlChannel, PUCCH) etc..In general, upstream control signaling is carried on ascending physical signal and controls to transmit on channel PUCCH, mainly include that channel quality indicates (ChannelQualityIndicator, CQI) signaling, ack/nack response (Acknowledged/non-acknowledged, ACK/NACK) message and dispatch request instruction message.

Especially, LTE-A will use transformat based on DFT-S-OFDM (DFT-Spreading-OFDM), example such as Fig. 1 for this form about uplink ACK/NACK message transformat (carrier in other words) on PUCCH.This form will take 1 physical resource group (PhysicalResourceBlock of 3GPPLTE/LTE-A definition a time slot (slot), PRB) 12 subcarriers in, each subcarrier corresponding QPSK (QuaternaryPhaseShiftKeying indirectly, QPSK) modulation symbol, each QPSK modulation symbol 2 bits of carrying, a then time slot 12*2=24 bit to be carried, the most whole DFT-S-OFDM form needs to carry 24 QPSK modulation symbols, i.e. 48 bits altogether at two time slots.

The main process of concrete employing PUCCH format transmission information bit based on DFT-S-OFDM is as follows: as a example by Fig. 1, first transmitting terminal utilizes certain chnnel coding (ChannelEncoding) mode to encode the sequence of 48 code word bits of generation, [b information bit waiting for transmission₀,b₁,…,b₄₇], then by scrambling (Scrambling) mode, 48 code word bits are scrambled, then 48 bits of output after scrambling are obtained the sequence [q of 24 QPSK symbols through QPSK modulation₀, q₁,…,q₂₃], then front 12 symbols to 24 modulation symbols, [q₀, q₁..., q₁₁], make 12 DFT transform, then by 12 data symbols of output, [Q after DFT transform₀, Q₁..., Q₁₁], on 12 subcarriers of Sequential Mapping to first time slot (Slot0), Sequential Mapping refers to that modulation symbol adjacent in modulation symbol sequence is mapped on adjacent subcarrier, sequentially for the data symbol on each subcarrier with certain sequence [w of a length of 5₀,w₁,...,w₄] it is extended to 5 data symbols, it is mapped to the position of data symbol in time；Same to rear 12 QPSK modulation symbols, [Q₁₂, Q₁₃..., Q₂₃], on Sequential Mapping to second time slot (Slot1)；Finally on predetermined pilot frequency locations is placed, corresponding pilot tone sends.Wherein process described above also has the implementation of other equivalence.For example, it is also possible to first 24 modulation symbols obtained are extended, then the modulation symbol being mapped in each time-domain symbol is carried out DFT transform operation, finally re-map on physical channel and send.

Assume in 48 code word bits that information bit to be transmitted coding is generated, front 24 code word bits b (0), b (1), ..., b (23) and rear 24 code word bits b (24), b (25) ..., b (47) independently obtains.So, when using structure similar for DFT-S-OFDM, modulation symbol corresponding to front 24 code word bits will be by Sequential Mapping to first time slot (Slot0), and rear 24 code word bits will be by Sequential Mapping to second time slot (Slot1)；The reception of the most front 24 code word bits only depends on the channel conditions of slot0, and the channel conditions of slot0 may be fabulous, it is also possible to extreme difference, such receptivity is unstable, and the reception of rear 24 code word bits can only rely on the channel conditions of slot1；And, in slot1 shown in Fig. 1, last symbol is the most occupied uses it for anything else, such as, it is used to sometimes send detectable signal (SoundingReferenceSignal, SRS), when this occurs, the extension length in the slot1 of DFT-S-OFDM form can only shorten from 5 is 4.And the performance of extension length length is better than short performance.If the most front 24 code word bits are only mapped to slot0, then 24 code word bits are only mapped to slot1, the receptivity entirety of the most front 24 code word bits is better than rear 24 code word bits performances, cause receptivity unbalanced, and for recipient, the algorithm of recipient can be extremely complex.

Summary of the invention

For solving problems of the prior art, embodiments of the invention provide a kind of information bit sending method, device and system

For solving problems of the prior art, embodiments of the invention provide the feedback method of a kind of channel condition information, device and system.

For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that

A kind of information bit sending method, comprises the following steps: information bit to be transmitted is divided at least two groups；

Encode often organizing information bit to be transmitted；Being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Modulation symbol is mapped and sends.

A kind of information bit dispensing device, including: grouped element, for information bit to be transmitted is divided at least two groups；Coding unit, for encoding often organizing information bit to be transmitted；Modulating unit, for being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Map and transmitting element, for modulation symbol being mapped and sending.

A kind of information bit sends system, carries out the base station that communication is connected, wherein including terminal and with described terminal: described terminal is for being divided at least two groups by information bit to be transmitted；Encode often organizing information bit to be transmitted；Being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Carry out mapping and being sent to base station by modulation symbol；Described base station is for receiving the modulation symbol that terminal sends, and is demodulated and decodes acquisition information bit waiting for transmission.

In embodiments of the present invention, information bit to be transmitted is divided at least two groups by terminal, encoding often organizing information bit to be transmitted and be modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together.Because information to be transmitted is first divided at least two groups by terminal especially, after coded modulation, each modulation symbol is obtained by the code word bits organized together, receiving terminal so can be facilitated to reduce algorithm complex, thus ensure the performance of receiving terminal..

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the configuration diagram of prior art PUCCH format based on DFT-S-OFDM transmission information bit；

Fig. 2 is embodiment of the present invention information bit sending method schematic diagram；

Fig. 3 is another information bit sending method schematic diagram of the embodiment of the present invention；

Fig. 4 is the simulation result schematic diagram that number is 12bit, 16bit and 20bit of embodiment of the present invention information bit to be sent；

Fig. 5 is another information bit sending method schematic diagram of the embodiment of the present invention；

Fig. 6 is the simulation result schematic diagram that number is 12bit, 16bit and 20bit of the information bit that the embodiment of the present invention sends；

Fig. 7 is embodiment of the present invention information bit dispensing device schematic diagram；

Fig. 8 is embodiment of the present invention modulating unit structural representation；

Fig. 9 is another structural representation of embodiment of the present invention modulating unit.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

A kind of information bit sending method that one embodiment of the invention provides, sees Fig. 2, and the method includes:

Step 201, is divided at least two groups by information bit to be transmitted；

Wherein in step 201, information bit to be transmitted is divided at least two groups by terminal, can be two groups or group more than two.The information bit that the most often group includes can be identical, it is also possible to different.Additionally.Information bit to be transmitted includes following at least one: channel quality indicator (CQI) in ascending control information bit, pre-coding matrix instruction PMI, order instruction RI, ack/nack response ACK/NACK, dispatch request indicates SRI.

Step 202, encodes often organizing information bit to be transmitted；

Step 203, is modulated obtaining modulation symbol by the code word bits after coding, and the most each modulation symbol is to be obtained by the code word bits modulation organized together；

Wherein the code word bits after coding is modulated obtaining modulation symbol and specifically includes two ways:

Wherein first kind of way is: the code word bits after often organizing coding is divided into N number of subgroup, it is thus achieved that the code word bits subgroup sequence often organized；The code word bits subgroup sequence often organized is carried out splicing and obtains total code word bits subgroup sequence；By total code word bits subgroup sequence rearrangement so that the code word bits subgroup sequence of least one set is discontinuously arranged in total code word bits subgroup sequence；It is modulated obtaining modulation symbol by the total code word bits subgroup sequence after rearrangement.Wherein by total code word bits subgroup sequence rearrangement so that the code word bits subgroup sequence of least one set is discontinuously arranged in total code word bits subgroup sequence includes: the code word bits subgroup sequence often organized in total code word bits subgroup sequence is carried out oscillation sorting.

The second way is: all code word bits after being separately encoded are modulated obtaining modulation symbol sequence and specifically include: the code word bits after often organizing coding is modulated obtaining the modulation symbol often organized；The modulation symbol often organized is carried out splicing and obtains modulation symbol sequence；By modulation symbol sequence rearrangement so that the modulation symbol of least one set is discontinuously arranged in modulation symbol sequence.Wherein by modulation symbol sequence rearrangement so that the modulation symbol of least one set is discontinuously arranged in modulation symbol sequence specifically includes: the often group modulation symbol in modulation symbol sequence is carried out oscillation sorting.

Step 204, maps modulation symbol and sends.

Information bit to be transmitted is divided at least two groups by terminal, encodes often organizing information bit to be transmitted and is modulated obtaining modulation symbol by the code word bits after coding, and the most each modulation symbol is to be obtained by the code word bits modulation organized together.Because information to be transmitted is first divided at least two groups by terminal especially, after coded modulation, each modulation symbol is obtained by the code word bits organized together, receiving terminal so can be facilitated to reduce algorithm complex, thus ensure the performance of receiving terminal.

A kind of information bit sending method that one embodiment of the invention provides, sees Fig. 3, and the method includes:

Step 301, transmitting terminal is first divided into n (n >=2) group A information bit waiting for transmission, and often group comprises the individual bit of X (n), wherein X (1)+X (2)+...+X (n)=A；

The bit number that in this step, often group includes can be the same or different.Such as, waiting for transmission is 20 information bits, is segmented into two 10 bits, i.e. X (1)+X (2)=10；And specifically, transmitting terminal can be LTE/LTE-A subscriber equipment, this information bit to be sent is ascending control information bit, can include but not limited to: CQI, and/or pre-coding matrix instruction (PMI, PrecodingMatrixIndex), and/or order instruction (RI, RankIndicator), and/or ACK/NACK, and/or dispatch request instruction (SRI, SchedulingRequestIndicator).

In this step, A packets of information bits can also be included: when comprising different types of control information bit in A information bit, can be grouped according to the type of the information of control, i.e. packet can divide in different groups different types of bit, because the receptivity that different types of control information bit requires is incomplete same, can be separately encoded to them.Such as can divide in a group by the CQI information bit in A information bit, ACK/NACK information is divided in another group；Or the SRI information bit in A information bit is divided in a group, ACK/NACK information is divided in another group；Or the CQI information bit in A information bit is divided in a group, SRI information is divided in another group.For concrete example, if comprising 10 CQI bits and 6 ACK/NACK bits in 16 information bits, then can individually divide one group 10 CQI bits, 6 ACK/NACK bits individually divide one group.

In this step, A packets of information bits can also be included: when comprising multiple carrier channel quality information (CQI) in A information bit, can be grouped according to carrier wave, i.e. packet can divide the channel quality information of different carrier in different groups.Such as, 11 channel quality information bits of carrier wave 1 are comprised in 17 information bits, 6 channel quality information bits of carrier wave 2, then can divide in a group by the 11 of carrier wave 1 channel quality information bits, and 6 channel quality information bits of carrier wave 2 divide in another group.

In this step, A packets of information bits can also be included: when comprising CQI, ACK/NACK and SRI in A information bit, can divide in a group by information bit corresponding for ACK/NACK with SRI, information bit corresponding for CQI divides in another group；Maybe can divide in a group by information bit corresponding for CQI with SRI, information bit corresponding for ACK/NACK divides in another group.Such as, 11 channel quality information bits are comprised in 18 information bits, 6 ACK/NACK information bits and 1 SRI information bit, then can divide in a group by 11 channel quality information bits, and 6 ACK/NACK information bits and 1 SRI information bit divide in another group.

Step 302, with coded method k, individual for X (k) bits of encoded is generated U (k) individual code word bits sequence, wherein U (1)+U (2)+...+U (n)=B, B is total code word bits number, and U (k) is the integral multiple of bit number represented by a modulation symbol in set modulation system.

Wherein coded method i, j are the most identical, do not limit；For example, if setting modulation system is QPSK modulation, then bit number contained by each U (k) is the multiple of 2；If setting modulation system is 16QAM, then bit number contained by each U (k) is the multiple of 4；By that analogy.Specifically, when using DFT-S-OFDM shown in Fig. 1, need X (1), X (2) is separately encoded 24 code word bits sequences of generation, i.e. U (1)=U (2)=24, B=48, specific coding method can be all based on table 1 and formula as described below (2) generate a length of 32 code word bits sequence, from this 32 bit, select 8 bits the most again to delete, obtain the code word bits sequence of a length of 24.The most directly remove rear 8 bits in 32 bits and obtain 24 long bit sequences.Obtain the code word bits sequence of a length of 32 to be obtained by equation below:

U_{k j} = [Σ_{n = 0}^{X_{k} - 1} (x_{k n} \cdot M_{j, n})] \mod 2

Formula (2)

Wherein, M_i,nFor the corresponding element in encoder matrix, i=0,1 ..., 31；x_knFor the n-th information bit in X (k) to be transmitted, n=0 ... X_k-1；U_kjFor jth bit in code word bits sequence U (k).

i	Mi,0	Mi,1	Mi,2	Mi,3	Mi,4	Mi,5	Mi,6	Mi,7	Mi,8	Mi,9	Mi,10
												0	1	1	0	0	0	0	0	0	0	0	1
1	1	1	1	0	0	0	0	0	0	1	1
												2	1	0	0	1	0	0	1	0	1	1	1
3	1	0	1	1	0	0	0	0	1	0	1
												4	1	1	1	1	0	0	0	1	0	0	1
5	1	1	0	0	1	0	1	1	1	0	1
												6	1	0	1	0	1	0	1	0	1	1	1
7	1	0	0	1	1	0	0	1	1	0	1
												8	1	1	0	1	1	0	0	1	0	1	1
9	1	0	1	1	1	0	1	0	0	1	1
												10	1	0	1	0	0	1	1	1	0	1	1
11	1	1	1	0	0	1	1	0	1	0	1
												12	1	0	0	1	0	1	0	1	1	1	1
13	1	1	0	1	0	1	0	1	0	1	1
												14	1	0	0	0	1	1	0	1	0	0	1
15	1	1	0	0	1	1	1	1	0	1	1
												16	1	1	1	0	1	1	1	0	0	1	0
17	1	0	0	1	1	1	0	0	1	0	0
												18	1	1	0	1	1	1	1	1	0	0	0
19	1	0	0	0	0	1	1	0	0	0	0
												20	1	0	1	0	0	0	1	0	0	0	1
21	1	1	0	1	0	0	0	0	0	1	1
												22	1	0	0	0	1	0	0	1	1	0	1
23	1	1	1	0	1	0	0	0	1	1	1
												24	1	1	1	1	1	0	1	1	1	1	0
25	1	1	0	0	0	1	1	1	0	0	1
												26	1	0	1	1	0	1	0	0	1	1	0
27	1	1	1	1	0	1	0	1	1	1	0
												28	1	0	1	0	1	1	1	0	1	0	0
29	1	0	1	1	1	1	1	1	1	0	0
												30	1	1	1	1	1	1	1	1	1	1	1
31	1	0	0	0	0	0	0	0	0	0	0

Table 1

Specific coding method can also be all based on such as table 2 below and formula (3) and generate the code word bits sequence of a length of 20, selecting 4 bits the most again from this 20 bit and obtain, to be added in after this 20 long bit sequence, the code word bits sequence that total length is 24, the relative ranks of 4 bits wherein added can be different with these 4 bits relative ranks in front 20 bit codewords sequences.The most simply, it is simply that directly select front 4 bits of 20 bits to put behind.The code word bits sequence of a length of 20 can be obtained by equation below:

U_{k j} = [Σ_{n = 0}^{X_{k} - 1} (x_{k n} \cdot M_{j, n})] \mod 2

Formula (3)

Wherein, M_i,nFor the corresponding element in encoder matrix, i=0,1 ..., 19；x_knFor the n-th information bit in X (k) to be transmitted, n=0 ... X_k-1；U_kjFor jth bit in code word bits sequence U (k).

Table 2

Specific coding method can also is that the method that one of which information bit describes based on table 1, the method that another group describes based on table 2.Specific coding method can also all use convolutional code, the way of realization of concrete convolutional code can use version 6 (Release6) or the inner implementation adopted of 3GPPLTE version 8 (Release8) in 3GPPUTRA, can also be other ways of realization, not limit.

Wherein, coding often group code word bits out can also individually be resequenced.Such as, the bit in U (1) presses formula (4)

(Pn+1) mod24, n=0,1 ..., 23, formula (4)

The sequence rearrangement determined, wherein mod is modulo operation, and P is one and 24 coprime numbers, such as 11,13 etc..As P=13, the sequence that formula determines is:

[1,14,3,16,5,18,7,20,9,22,11,0,13,2,15,4,17,6,19,8,21,10,23,12]；Then U (1) by the codeword sequence after rearrangement is: [U_1,1, U_1,14,U_1,3,…,U_1,23, U_1,12]。

N the length obtained is respectively the code word bits sequence assembly of U (i) and gets up to obtain the code word bits sequence that total length is B by step 303., when wherein splicing, the relative ranks between group and group does not do any restriction, it can be any order, and the bit in this codeword sequence B is divided into subgroup by the modulation system set, obtain a subgroup sequence, and again the subgroup in the subgroup sequence obtained is ranked up, so that from each U (i) numeral bit form subgroup Discrete Distribution in whole subgroup sequence, cancel subgroup packet and obtain the code word bits sequence of another a length of B.

For example, if setting modulation system is QPSK modulation, each two code word bits one subgroup of composition；If setting modulation system is 16QAM, every 4 code word bits, one subgroup of composition；By that analogy.

During concrete employing DFT-S-OFDM, set modulation system is QPSK modulation, U (1)=U (2)=24, is first spliced into U (1) U (2) or U (2) U (1), obtains the code word bits sequence B of a length of 48.With B=U (1) U (2)=[U_1,0, U_1,1..., U_1,23, U_2,0, U_2,1..., U_2,23As a example by], first B is divided into subgroup obtains [(U_1,0, U_1,1,) ..., (U_1,22, U_1,23), (U_2,0, U_2,1) ..., (U_2,22, U_2,23)], subgroup is re-ordered into [(U_1,0, U_1,1), (U_2,0, U_2,1), (U_1,2, U_1,3), (U_2,2, U_2,3) ..., (U_1,22, U_1,23), (U_2,22, U_2,23)], finally cancel subgroup packet and obtain another code word bits sequence [U_1,0, U_1,1, U_2,0, U_2,2..., U_1,22, U_1,23, U_2,22, U_2,23]。

Rearrangement the most recited above is so that often organizing code word bits Discrete Distribution is to obtain better performance in whole code word bits sequence.Still with B=[U (1) U (2)=[U_1,0, U_1,1..., U_1,23, U_2,0, U_2,1..., U_2,23As a example by], before rearrangement, if directly code word bits sequence B is used based on the structural transmission information bit that DFT-S-OFDM is similar, code word bits sequence U (1) that X (1) bits of encoded generates finally only is mapped in the 0th time slot (slot0), and same U (2) is only at slot1；The reception of so X (1) bit only depends on the channel conditions of slot0, and the channel conditions of slot0 may be fabulous, it is also possible to extreme difference, such receptivity is unstable, and X (2) bit problem is similar to；On the other hand, in slot1 shown in Fig. 1, last symbol is the most occupied uses it for anything else, such as, it is used to sometimes send detectable signal (SoundingReferenceSignal, SRS), when this occurs, the extension length in the slot1 of DFT-S-OFDM form can only shorten from 5 is 4.And the performance of extension length length is better than short performance.If so U (1) is mapped to slot0, and U (2) is mapped to slot1, then the receptivity entirety of X (1) bit is better than X (2) bit performance, causes receptivity unbalanced.And after by rearrangement, with the code word bits sequence obtained after sequence be

[U_1,0, U_1,1, U_2,0, U_2,2..., U_1,22, U_1,23, U_2,22, U_2,23As a example by], code word bits inner for U (1) has distribution in two slot s lot0 and slot1, the reception of so X (1) bit relies both on the channel conditions of two time slots, and probability the most very poor while of two non-slotted channel situations is the least, so for major part situation, the receptivity of X (1) bit will not be the poorest.In like manner, the receptivity of X (2) bit also will not be the poorest.On the other hand, when running in slot1 that last symbol is occupied to use it for anything else, X (1) and X (2) some experience all simultaneously be extension length be 5, some experience be extension length be 4, so to X (1), X (2) is fair, thus reaches balancing performance.So rearrangement makes the code word bits of each subcode group try one's best Discrete Distribution, finally there is distribution the most important to promoting receptivity on each time slot.

Step 304, by the code word bits sequence order successively of a length of B obtained by the modulation system modulation set, obtains a series of modulation symbol sequence.

Specifically, modulation system can be QPSK modulation, 16QAM etc..When using QPSK modulation, order modulation is i.e. b (0) successively, and b (1) is modulated into modulation symbol q (0), b (2), b (3), is modulated into modulation symbol q (1), the like；When using 16QAM modulation, order modulation is i.e. b (0) successively, b (1), b (2), b (3) are modulated into modulation symbol q (0), b (4), b (5), b (6), b (7) are modulated into modulation symbol q (1), analogize with secondary.

It should be noted that, the code word bits that each modulation symbol that step 303 neutron component group obtains after being to ensure that step 304 modulation comprises both is from one and same coding group U (i), receiving terminal so can be facilitated to be capable of the extraordinary maximum likelihood algorithm of performance of symbol level and control complexity, and then can ensure that the algorithm of receiving terminal realizes and ensures performance.Specifically, if the rearrangement on general codeword sequence, the most each code word bits is independent, and it can be re-released in any position, and the code word bits adjacent with it is placed in the most unrelated, the code word bits sequence that the most this mode obtains after sorting can be B=[U_1,0, U_2,0, U_1,1, U_2,1..., U_1,23, U_2,23], i.e. together with code word bits sequence in U (1) and U (2) has been emitted on by intersection.In this case, at receiving terminal, each subcode group can not independently be used the extraordinary maximum likelihood algorithm of performance of modulation symbol level, because there is the subcode group that the bit comprised in some modulation symbols belongs to different, such as code word bits U in B_1,0, U_2,0A QPSK modulation symbol will be modulated into, but they will be from different subcode groups；And if must the maximum likelihood algorithm of symbolization level, can only each subcode group join together to do, its complexity is the highest.Because maximum likelihood algorithm typically to travel through all of probability, the most namely travel through all of modulation symbol sequence, and be the probability combined and travel through each character code group.As a example by two each 10 bits of code character, combining traversal needs to travel through 2¹⁰*2¹⁰(more than million) plants different probability.And if first virtual group ensure that the code word bits in each modulation symbol is from same subcode group, receiving terminal can independently pick out all modulation symbols belonging to different subcode group the maximum likelihood algorithm of independent utility symbol level, thus complexity is substantially reduced.Still, as a example by two each 10 bits of code character, each subcode group independence maximum likelihood needs to travel through 2¹⁰+2¹⁰(about 2000) plant different probability.Comparing million grades above, complexity is substantially reduced.

Step 305: on Sequential Mapping to structure S, and place upper pilot tone transmission.

Here structure S refers to, the structure of similar DFT-S-OFDM, the physical resource that i.e. this structure takies took at least two group channel essentially independent time periods in time, and/or takies at least two essentially independent frequency ranges of group channel in frequency.Specifically, when using DFT-S-OFDM, map and also include first doing DFT transform, and the operation such as extension, then Sequential Mapping, i.e. adjacent-symbol are mapped on adjacent sub-carrier.

Correspondingly, receiving terminal needs the coded method used according to each packet of transmitting terminal, modulation system, and rearrangement rule is received, and reduces original order demodulating and decoding including according to rearrangement rule, the most no longer describes in detail.Wherein receiving terminal can be base station.

For the ease of observing the performance of the information bit sending method of the present embodiment, below to be divided into two groups, all employing tables 1 encode, then oscillation sorting, and use DFT-S-OFDM form shown in Fig. 1 to be sent as representing, and provide the performance of the present embodiment.Wherein, Performance comparision by the Realization of Simulation, simulated conditions is: 5MHz bandwidth, classical city (ETU:EvolvedTypicalUrban) channel, user equipment (UE) translational speed is 3 kilometers/hour, and antenna frame is 12 and receives, and uses actual channel to estimate.

Seeing also Fig. 4, Fig. 4 is the pin simulation result schematic diagram that number is 12bit, 16bit and 20bit to sent information bit.Wherein, in Fig. 4, abscissa represents signal to noise ratio (SNR), and unit is dB；Vertical coordinate represents block-error probability (BlockErrorRate, BLER)；The SNR the least expression performance that the BER now reaching identical needs is the best.

A kind of information bit sending method that one embodiment of the invention provides, sees Fig. 5, and the method includes:

501. transmitting terminals are first divided into n (n >=2) group A information bit waiting for transmission, and often group comprises the individual bit of X (n), wherein X (1)+X (2)+...+X (n)=A；The bit number that in this step, often group includes can be the same or different.Such as, waiting for transmission is 20 information bits, is segmented into two 10 bits, i.e. X (1)+X (2)=10；Specifically, transmitting terminal can be LTE/LTE-A subscriber equipment, described information bit to be sent is ascending control information bit, can include but not limited to: CQI, and/or pre-coding matrix instruction (PMI, PrecodingMatrixIndex), and/or order instruction (RI, RankIndicator), and/or ACK/NACK, and/or dispatch request instruction (SRI, SchedulingRequestIndicator).

Step 502. coded method k generates U (k) individual code word bits sequence individual for X (k) bits of encoded, wherein U (1)+U (2)+...+U (n)=B, B is total code word bits number, and U (k) is the integral multiple of bit number represented by a modulation symbol in set modulation system.Coded method i, j are the most identical, do not limit；

For example, if setting modulation system is QPSK modulation, then bit number contained by each U (k) is the multiple of 2；If setting modulation system is 16QAM, then bit number contained by each U (k) is the multiple of 4；By that analogy.Specific coding method is similar with step 302 in Fig. 3, repeats no more.

The all U (i) obtained are stitched together by step 503., obtain the code word bits sequence of a length of B；

When wherein splicing in the joining method in this step, the relative ranks between group and group does not do any restriction, can be any order.For example, it may be press the sequential concatenation of the value increasing or decreasing of i.For example, when step B generates two code word bits sequences, can be by the sequential concatenation of first U1 U2 again, it is also possible to by the sequential concatenation of first U2 U1 again.

The code word bits sequence order successively of a length of B obtained is modulated by step 504. by predetermined modulation system, obtains a series of modulation symbol sequence；

Specifically, modulation system can be QPSK modulation, 16QAM, etc..When using QPSK modulation, order modulation is i.e. b (0) successively, and b (1) is modulated into modulation symbol q (0), b (2), and b (3) is modulated into modulation symbol q (1), the like；When using 16QAM modulation, order modulation is i.e. b (0) successively, b (1), b (2), b (3) are modulated into modulation symbol q (0), b (4), b (5), b (6), b (7) are modulated into modulation symbol q (1), the like.

The modulation symbol rearrangement that step 505. will obtain, so that the modulation symbol Discrete Distribution whole modulation symbol sequence come from each codeword sequence.

Specifically, when U (1)=U (2)=24, after using QPSK modulation, U (1) generates [q_1,0, q_1,1..., q_1,11], U (2) generates [q_2,0, q_2,1..., q_2,11], the sequence of these modulation symbols can be obtained the modulation symbol sequence Q of a length of 24, the modulation symbol sequence Q such as obtained after rearrangement can be as follows, and the most not all order can be described by formula or what criterion, can only directly be embodied by last result.

Sequence 1:Q=[q_1,0, q_2,0, q_1,1, q_2,1..., q_1,11, q_2,11]；

Sequence 2:Q=[q_1,0, q_1,1..., q_1,5, q_2,0, q_2,1..., q_2,5, q_1,6, q_1,7..., q_1,11, q_2,6, q_2,7..., q_2,11]；

Sequence 3:Q=[q_1,0, q_1,1, q_2,0, q_2,1, q_1,2, q_1,3, q_2,2, q_2,3..., q_1,10, q_1,11, q_2,10, q_2,11]；

Can also be to the modulation symbol sequence of a length of 24

[q_1,0, q_1,1..., q_1,11, q_2,0, q_2,1..., q_2,11] press formula

(Pn+1) mod24, n=0,1 ..., 23,

The sequence rearrangement determined, wherein mod is modulo operation, and P is one and 24 coprime numbers, such as 11,13 etc..As P=13, the sequence that formula determines is: [1,14,3,16,5,18,7,20,9,22,11,0,13,2,15,4,17,6,19,8,21,10,23,12]；Modulation symbol sequence after rearrangement is:

[q_1,1,q_2,2,q_1,3,q_2,4,q_1,5,q_2,6,q_1,7,...,q_1,10,q_2,11,q_2,0]；

The purpose of rearrangement describes the same with step 303 in above-mentioned Fig. 3, repeats no more.It should be noted that these are only some citings of sortord, concrete sortord is not limited by the present invention.

Then step 506 is mapped in structure S, and places upper pilot tone transmission.

Specifically, when using DFT-S-OFDM, map also include spreading, the operation such as DFT transform, then Sequential Mapping.

For the ease of observing the performance of the information bit sending method of the present embodiment, below to be divided into two groups, all employing tables 1 encode, then modulation symbol oscillation sorting, and use DFT-S-OFDM form shown in Fig. 1 to be sent as representing, and provide the performance of the present embodiment.Wherein, Performance comparision by the Realization of Simulation, simulated conditions is: 5MHz bandwidth, classical city (ETU:EvolvedTypicalUrban) channel, user equipment (UE) translational speed is 3 kilometers/hour, and antenna frame is 12 and receives, and uses actual channel to estimate.Seeing also Fig. 6, Fig. 6 is the pin simulation result schematic diagram that number is 12bit, 16bit and 20bit to sent information bit.Wherein, in Fig. 6, abscissa represents signal to noise ratio (SNR), and unit is dB；Vertical coordinate represents block-error probability (BlockErrorRate, BLER)；The SNR the least expression performance that the BER now reaching identical needs is the best.

The embodiment of the present invention provides a kind of information bit dispensing device, as it is shown in fig. 7, comprises: grouped element 701, for information bit to be transmitted is divided at least two groups；Coding unit 702, for encoding often organizing information bit to be transmitted；Modulating unit 703, for being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Map and transmitting element 704, for modulation symbol being mapped and sending.

Wherein, the information bit that in grouped element 701, often group includes can be identical, it is also possible to different.Additionally.Information bit to be transmitted includes following at least one: channel quality indicator (CQI) in ascending control information bit, pre-coding matrix instruction PMI, order instruction RI, ack/nack response ACK/NACK, dispatch request indicates SRI.

Wherein modulating unit 703 concrete structure is as shown in Figure 8, and including the first subgroup unit 7031, the code word bits after often organizing coding is divided into N number of subgroup, it is thus achieved that the code word bits subgroup sequence often organized；Concatenation unit 7032, obtains total code word bits subgroup sequence for the code word bits subgroup sequence often organized carries out splicing；Sequencing unit 7033, for total code word bits subgroup sequence being resequenced so that the code word bits subgroup sequence of least one set is discontinuously arranged in total code word bits subgroup sequence；First modulating unit 7034, for being modulated obtaining modulation symbol by the total code word bits subgroup sequence after rearrangement.Wherein the first subgroup unit 7031, concatenation unit 7032, sequencing unit 7033 and the first modulating unit 7034 specific implementation refer to step 302, are not described in detail herein.

Wherein this sequencing unit 7033 farther includes: the first sequencing unit (not shown), for the code word bits subgroup sequence often organized in total code word bits subgroup sequence is carried out oscillation sorting, specific implementation refers to step 302, is not described in detail herein.

Wherein modulating unit 703 may include that the second modulating unit 7131, and the code word bits after often organizing coding is modulated obtaining the modulation symbol often organized；Second concatenation unit 7132, obtains modulation symbol sequence for the modulation symbol often organized is carried out splicing；Second sequencing unit 7133, for being resequenced by modulation symbol sequence so that the modulation symbol of least one set is discontinuously arranged in modulation symbol sequence.Wherein second modulating unit the 7131, second concatenation unit 7132 and the second sequencing unit 7133 specific implementation refer to step 503,504,505, be not described in detail herein.

Wherein the second sequencing unit 7133 includes: the 3rd sequencing unit (not shown), for the often group modulation symbol in modulation symbol sequence is carried out oscillation sorting.Specific implementation refers to step 505, is not described in detail herein.

The present invention implements profit and also provides for the system that a kind of information bit transmits, and including terminal and carry out the base station that communication is connected with described terminal, wherein said terminal is for being divided at least two groups by information bit to be transmitted；Encode often organizing information bit to be transmitted；Being modulated obtaining modulation symbol by the code word bits after coding, the most each modulation symbol is to be obtained by the code word bits modulation organized together；Carry out mapping and being sent to base station by modulation symbol；Described base station is for receiving the modulation symbol that terminal sends, and is demodulated and decodes acquisition information bit waiting for transmission.

Those skilled in the art is it can be understood that can add the mode of required general hardware platform by software to the present invention and realize.Based on such understanding, the part that prior art is contributed by technical scheme the most in other words can embody with the form of software product, this computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform each embodiment of the present invention or the method described in some part of embodiment.

The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.

Claims

1. an information bit sending method, it is characterised in that comprise the following steps:

Information bit to be transmitted is divided at least two groups, and wherein, described information bit to be transmitted is ascending control information bit；

Encoding described at least two group information bits to be transmitted, to generate at least two group code word bits, wherein, the often group code word bits in described at least two group code word bits includes N number of code word bits subgroup；

Described at least two group code word bits rearrangements are obtained total code word bits subgroup sequence, wherein, described total code word bits subgroup sequence include described in all code word bits subgroups of including of at least two group code word bits, N number of code word bits subgroup Discrete Distribution in described total code word bits subgroup sequence that described often group code word bits includes；

Being modulated described total code word bits subgroup sequence obtaining modulation symbol, the most each modulation symbol is to be modulated by the code word bits of same code word bits subgroup to obtain；

Modulation symbol is mapped and sends.

Method the most according to claim 1, it is characterised in that

The code word bits subgroup of described at least two group code word bits is oscillation sorting in total code word bits subgroup sequence.

Method the most according to claim 1, it is characterised in that described ascending control information bit specifically include following at least one:

Channel quality indicator (CQI), pre-coding matrix instruction PMI, order instruction RI, ack/nack response ACK/NACK, and dispatch request instruction SRI.

4. according to the method in any of the one of claims 1 to 3, it is characterised in that described that information bit to be transmitted is divided at least two groups the bit number that often group includes is identical or different.

5. an information bit dispensing device, it is characterised in that including:

Grouped element, for information bit to be transmitted is divided at least two groups, wherein, described information bit to be transmitted is ascending control information bit；

Coding unit, for encoding described at least two group information bits to be transmitted, to generate at least two group code word bits, wherein, the often group code word bits in described at least two group code word bits includes N number of code word bits subgroup；

Modulating unit, for described at least two group code word bits rearrangements are obtained total code word bits subgroup sequence, wherein, described total code word bits subgroup sequence include described in all code word bits subgroups of including of at least two group code word bits, N number of code word bits subgroup Discrete Distribution in described total code word bits subgroup sequence that described often group code word bits includes；And for described total code word bits subgroup sequence is modulated acquisition modulation symbol, the most each modulation symbol is to be modulated by the code word bits of same code word bits subgroup to obtain；And

Map and transmitting element, for modulation symbol being mapped and sending.

Device the most according to claim 5, it is characterised in that

Device the most according to claim 5, it is characterised in that described ascending control information bit specifically include following at least one:

8. according to the device in any of the one of claim 5 to 7, it is characterised in that described that information bit to be transmitted is divided at least two groups the bit number that often group includes is identical or different.

9. an information bit sends system, it is characterised in that includes terminal and carries out the base station that communication is connected, wherein with described terminal:

Described terminal is used for

Modulation symbol is mapped and sends；And

Described base station is for receiving the modulation symbol that terminal sends, and is demodulated and decodes acquisition information bit waiting for transmission.

System the most according to claim 9, it is characterised in that

11. systems according to claim 9, it is characterised in that described ascending control information bit specifically include following at least one:

Channel quality indicator (CQI), pre-coding matrix instruction PMI, order instruction RI, ack/nack response ACK/NACK, dispatch request instruction SRI.

12. according to the system described in claim 9 to 11 any one, it is characterised in that described that information bit to be transmitted is divided at least two groups the bit number that often group includes is identical, or different.