CN102640468A - Method and apparatus for mapping data streams to resource block in wireless communication system - Google Patents

Method and apparatus for mapping data streams to resource block in wireless communication system Download PDF

Info

Publication number
CN102640468A
CN102640468A CN2009801626857A CN200980162685A CN102640468A CN 102640468 A CN102640468 A CN 102640468A CN 2009801626857 A CN2009801626857 A CN 2009801626857A CN 200980162685 A CN200980162685 A CN 200980162685A CN 102640468 A CN102640468 A CN 102640468A
Authority
CN
China
Prior art keywords
area
resource
channel estimation
symbol stream
mapping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2009801626857A
Other languages
Chinese (zh)
Inventor
兰元荣
梁生宝
张�杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CN102640468A publication Critical patent/CN102640468A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供一种数据流到资源块的映射方法及装置。其中所述方法包括：将所述数据流中的系统符号流基本映射到所述资源块中信道估计误差尽量小的资源粒子上；将所述数据流中的校验符号流基本映射到所述资源块中信道估计误差尽量大的资源粒子上。本发明的方法可以降低误块率，并降低正确检测所需要的重传次数。

Figure 200980162685

This invention provides a method and apparatus for mapping data streams to resource blocks. The method includes: substantially mapping the system symbol stream in the data stream to resource particles in the resource block with the smallest possible channel estimation error; and substantially mapping the parity symbol stream in the data stream to resource particles in the resource block with the largest possible channel estimation error. This method can reduce the block error rate and the number of retransmissions required for correct detection.

Figure 200980162685

Description

Method and apparatus for mapping data streams to resource block in wireless communication system
Data flow to the mapping method and engineering device technique field of resource block in wireless communication system
The present invention relates to wireless communication system, and in particular to data flow to the mapping method and device of resource block in wireless communication system.Background technology
OFDM（OFDM it is) a kind of high speed transmission technology under wireless environment, high-speed serial data is transformed into the parallel data of multichannel relative low speeds and different carrier waves is modulated by the technology.This parallel transmission system greatly expands the pulse width of symbol, improves the performance of anti-multipath fading.At present, based on OFDM（OFDM) broad-band channel of frequency selective fading is equably divided into several frequency-flat fading channels by the multi-carrier wireless communication of technology, the frequency equalizer of single tap is only needed in receiving terminal, so as to greatly simplify the equalization algorithm of system receiver；On this basis, multiple-input and multiple-output（MIMO) the characteristic of technology utilization space channel, using the teaching of the invention it is possible to provide High Data Rate and big handling capacity and bigger communication distance, the very high availability of frequency spectrum having.Therefore, in the current and following quite a long time, MIMO-OFDM technologies will be that the key technology for PHY of wireless communication system is current.In Long Term Evolution（) or senior long term evolution LTE（LTE-A the application of MIMO-OFDM technologies) is supported in system.
The transmission flow of signal is generally comprised in current LTE system：Data flow passes through one or more encoder, obtain coded system bit, after respective Scrambling Operation, the information bit after scrambling is modulated into QPSK, 16QAM, 64QAM etc. symbol constellation point, the streams of code words after being modulated by symbolization modulator.Code word after modulation flows through layer mapper to different layers, obtains the signal on multiple layers.Signal on floor is converted into N roads signal by precoder, and N is transmission antenna number.The serial signal of each branch road is re-mapped in time-frequency two-dimensional physical resource, is eventually passed ofdm signal maker and is generated the time-domain signal on each antenna and sent through respective transmission antenna to physical channel.What the present invention was discussed will be the serial signal of each branch road after precoding to the mapping of time-frequency two-dimensional physical resource.
For the ease of efficient distribution physical resource, a physical frame is generally divided into several subframes in time-domain, at the same be divided into frequency domain some basic distribution resource blocks (resource block, RB).For example, in LTE standard, 10ms physical frame contains 10 subframes, 20 time slots；Each subframe, comprising 14 OFDM symbols, includes the basic distribution resource block by unit of 12 subcarriers in time-domain in frequency domain；The time/frequency source block that 12 subcarriers are constituted in 14 OFDM symbols and frequency domain in time domain is that the time/frequency source block that 1 subcarrier is constituted on 1 OFDM symbol and frequency domain in a RB, time domain is minimum physical resource particle（resource element, RE
Exist in the pilot design of the transmission antenna of current MIMO-OFDM systems each RE channel estimation accuracies it is uneven the problem of, and do not consider the inhomogeneities of each RE channel estimation accuracies when by data flow resource block mapping in the prior art, so as to have impact on the reliability of data transfer, how to be more effectively mapped to modulation symbol on each RE becomes an important subject under discussion of system design.The content of the invention
In view of the problems of the prior art, it is an object of the present invention to provide the mapping method and device that data in a kind of wireless communication system flow to resource block, to improve the transmission quality of signal.
According to an aspect of the invention, there is provided a kind of data flow to the reflection method of resource block, wherein, this method bag is included as lower Walk is rapid：System symbol stream in the data flow is mapped into channel estimation errors in the resource block substantially to try one's best in small resource particle；And the checking symbol stream in the data flow is mapped to channel estimation errors in the resource block substantially tried one's best in big resource particle.
According to another aspect of the present invention there is provided the mapping device that a kind of data flow to resource block, wherein, the device includes：First map unit, the system symbol stream in the data flow is mapped to channel estimation errors in the resource block and tried one's best in small resource particle by it substantially；And second map unit, the checking symbol stream in the data flow is mapped to channel estimation errors in the resource block and tried one's best in big resource particle by it substantially.
According to another aspect of the present invention, there is provided a kind of computer-readable program, wherein, when performing described program in multi-input multi-output system, described program causes computer to perform the mapping method that above-mentioned data flow to resource block in a wireless communication system.
There is provided a kind of storage for the computer-readable program that is stored with according to another aspect of the present invention Medium, wherein, the computer-readable program causes computer to perform the mapping method that above-mentioned data flow to resource block in multi-input multi-output system.
The mapping method and device that the data of the present invention flow to resource block can effectively reduce the Block Error Rate of data transfer, improve the reliability of data transfer.
In order to realize foregoing and related purpose, the present invention includes the feature for hereafter fully describing and specifically noting in the claims.The following description and drawings illustrating in detail the specific exemplary embodiments of the present invention.However, these embodiments be merely representative of can use the present invention the various modes of principle in it is several.According to the present invention combination accompanying drawing considered it is described in detail below, other objects of the present invention, advantage and novel feature will be clear.Brief description of the drawings
In the accompanying drawings, identical or corresponding technical characteristic or part will be represented using identical or corresponding reference.Wherein：
Fig. 1 shows the common pilot signal of a sector in LTE system（CRS) pattern example；
Fig. 2 a to Fig. 2 d respectively illustrate the statistical distribution gray scale view of CRS channel estimation errors of 1-4 root antennas under ITU-PB3km/h channel models in Fig. 1；
Fig. 3 a to Fig. 3 d are respectively the corresponding 3-D views of Fig. 2 a to Fig. 2 d；
Fig. 4 a to Fig. 4 d respectively illustrate the statistical distribution gray scale view of CRS channel estimation errors of 1-4 root antennas under ITU-VA120km/h channel models in Fig. 1；
Fig. 5 a to Fig. 5 d are respectively the corresponding 3-D views of Fig. 4 a to Fig. 4 d；
Fig. 6 shows that the data of one embodiment of the present of invention flow to the flow chart of the mapping method of resource block；
Fig. 7 shows that the data of an alternative embodiment of the invention flow to the flow chart of the mapping method of resource block；
Fig. 8 shows that the data of an alternative embodiment of the invention flow to the flow chart of the mapping method of resource block；
Fig. 9 shows that the data of an alternative embodiment of the invention flow to the flow chart of the mapping method of resource block； Figure 10 shows that the data of one embodiment of the present of invention flow to the block diagram example of the mapping device of resource block；
Figure 11 show the simple structure schematic diagram of the base station in wireless communication system or the emitter in user equipment.Embodiment
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 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 the premise of creative work is not made belongs to the scope of protection of the invention.
Herein, it can further be stated that, it in order to avoid having obscured the present invention because of unnecessary details, illustrate only and rapid according to the closely related device structure of the solution of the present invention and/or Chu Li Walk, and eliminate and the little other details of relation of the present invention in the accompanying drawings.
Problem to be solved by this invention is to be directed in the pilot design of wireless system to have the uneven phenomenon of each RE channel estimation accuracies, data flow to the mapping method and device of resource block when design is transmitted and retransmitted for the first time, to effectively improve the reliability of system transmission, number of retransmissions and residual bit error rate needed for the correct detection of reduction.
The present invention will focus on by taking LTE system as an example to illustrate data flow to the mapping of resource block, but the present invention is not limited to LTE system, and present invention could apply to existing mimo system（Such as LTE and lte-a system）Data flow to the mapping of resource block in the mimo system developed later.And the present invention data flow to resource block mapping method and device be not only adapted to up-link transmission be also suitable for downlink transmission.
The good and bad of channel estimating performance in the embodiment of the present invention on each RE based on resource block determines the mapping method that data flow to physical resource.User equipment in LTE is before demodulating data, it is necessary to which the channel on data RE first all to it carries out channel estimation.The poor RE positions of the statistic property of channel estimation, in channel coding, systematic bits can be determined according to LTE pilot configuration（Or information bit）Importance be higher than check bit, therefore the present invention is in first transmission, the preferable RE of channel estimation accuracy is used for the symbol of transmission system bit modulation, and for channel The poor RE of estimation effect is used for the symbol of transfer check bit modulation.In retransmission processes, symbol will be sent it is mapped to channel estimation errors as much as possible and be different from the RE that transmits before, to obtain the effect of diversity, improves the efficiency retransmitted.For example, when retransmitting, the last symbol being in the preferable RE of channel estimation effect is used in the poor RE transmission of channel estimation effect, the symbol in the last RE poor in channel estimation effect is used to be in the preferable RE of channel estimation effect and transmitted.
Fig. 1 is a sector in LTE system（Sector common pilot signal)（Common reference signal, CRS) pattern（Can abbreviation pilot tone pattern）Example.X direction represents different OFDM symbols in Fig. 1, and the longitudinal axis represents different subcarriers.
Because the channel estimation statistical error distribution obtained under different channels Model Condition there may be difference, thus need to consider the channel estimation errors performance under different channel models to increase the applicability based on this method.ITU-PB3km/h channel models and ITU-VA120km/h channel models are two kinds of typical channel models, with certain representativeness.Fig. 2 a to Fig. 2 d respectively illustrate the statistical Butut of CRS channel estimation errors of 1-4 root antennas under ITU-PB3km/h channel models in Fig. 1, show same Fig. 1 of meaning horizontally and vertically in the statistical result of the channel estimation of 1-4 root antennas under ITU-PB3km/h channel models, Fig. 2 a to Fig. 2 d.Fig. 3 a to Fig. 3 d are respectively the corresponding graphics of Fig. 2 a to Fig. 2 d.Fig. 4 a to Fig. 4 d respectively illustrate the statistical Butut of CRS channel estimation errors of 1-4 root antennas under ITU-VA120km/h channel models in Fig. 1, it is shown that the statistical result of the channel estimation of 1-4 root antennas under ITU-VA120km/h channel models.Fig. 5 a to Fig. 5 d are respectively the corresponding graphics of Fig. 4 a to Fig. 4 d.Same Fig. 1 of meaning in Fig. 4 a to Fig. 4 d horizontally and vertically.
Here, the algorithm that mobile station carries out channel estimation use is, for example, based on a resource block (resources block, RB the quasi- shellfish lj of bidimensional least mean-square error (2-dimension minimum means square error, 2D MMSE)).The channel estimation value on any one grid in one of resource block is： _
Channel estimation mean square error is：
Here it is respectively i-th of subcarrier, j-th of OFDM symbol in some resource block with ^ On channel response estimate and actual value, for the column vector lined up of channel response of pilot point all in the resource block, for using the interpolation of 2D MMSE criterions vector.More than channel estimation method be not limited to 2D MMSE criterions, can also use other linear interpolation methods, the form of channel estimation and（1) formula is identical, and only therein element value is different.
Below based on the channel estimation statistical property under different channels model, illustrate the method for mapping resource of the embodiment of the present invention.
Fig. 6 show the mapping method that data in the wireless communication system of one embodiment of the present of invention flow to resource block, and this method bag is included as lower Walk is rapid：
The rapid S110 of Walk, are mapped to channel estimation errors in resource block by the system symbol stream in the data flow and try one's best in small resource particle substantially.
For example, the system symbol stream in data flow can be mapped to on multiple RE above, the multiple RE number corresponds to the length of system symbol stream according to the channel estimation errors of RE in resource block ascending order.The corresponding maximum channel evaluated errors of multiple RE before described are by less than or equal to the channel estimation errors of the correspondence minimums of remaining RE below.Described remaining RE below will be used for transfer check symbol.
The rapid S130 of Walk, are mapped to channel estimation errors in resource block by the checking symbol stream in the data flow and try one's best in big resource particle substantially.
For example, verification symbol stream can be mapped on described remaining RE below.
For convenience, multiple RE in resource block for transmission system symbol stream can be referred to as first group of RE, the RE that remaining in the resource block is used for transfer check symbol stream is referred to as second group of RE.
It should be noted that in embodiments of the present invention, not necessarily must strictly require very much that the channel estimation errors of each RE in first group of RE are both less than or equal to the channel estimation errors of each RE in second group of RE.Sometimes for simpler in realization, channel estimation errors of the channel estimation errors slightly larger than RE a small amount of in second group of RE for having the RE of indivedual or only a few in first group of RE can be allowed, as long as ensureing that most of system symbol stream is all mapped in the less RE of the channel estimation errors of resource block, it is possible to relative to the transmission reliability that prior art improves data flow.Therefore , Walk rapid S110 and S130 employ the statement of " being mapped to substantially ... " in the corresponding mapping methods of Fig. 1.
First group of RE can form a region in resource block.In one embodiment of the invention In, preferably, maximum channel estimation errors are less than or equal to channel estimation errors minimum outside the region in the region, in other words, it is exactly that all RE in the region have less channel estimation errors, herein, " smaller channel estimation errors " refer to the channel estimation errors for being less than or equal to RE minimum channel estimation errors outside the region.In another embodiment of the present invention, it is preferable that the region includes the RE with minimum channel estimation errors.In actual applications, the region can be predefined according to the size of channel estimation errors.The region is probably irregular area.
In addition, in another embodiment of the present invention, it can also realize and be pre-selected in resource block for convenience the region of the regular shape for the length for meeting system symbol stream, such as rectangular area, so that having many resource particles with smaller channel estimation errors as far as possible in the region of the regular shape, described " smaller channel estimation errors " are met herein：The channel estimation errors are less than or equal to the minimum channel estimation errors of RE outside the region of the regular shape.
In addition, in another embodiment of the present invention, the region of the regular shape of predefined size can also be pre-selected in resource block, such as rectangular area, if the transmittability in the region of the regular shape and the length of system symbol stream are inconsistent, in mapping can according to the length of system symbol stream come appropriate broadening Huo Shou Shrink regular shape region.
When antenna 1 under ITU-PB3km/h channel models in based on Fig. 2 a and Fig. 3 a carries out resource impact, system symbol stream can be for example mapped in channel estimation errors in the corresponding resource block of antenna 1 to try one's best in small RE, or may map in predetermined rectangular area, so that having as far as possible many resource particles with smaller channel estimation errors in the rectangular area, described herein that there are smaller channel estimation errors to meet, the channel estimation errors are less than or equal to the minimum channel estimation errors of RE outside the rectangular area.Described rectangular area can be for example the region that is determined in the resource block shown in Fig. 2 a and Fig. 3 a by subcarrier 5 and subcarrier 6 and symbol 5 to the corresponding RE of symbol 8.Predetermined rectangular area described herein is only for example, and not for the present invention is limited, within the spirit of the invention, can also there is various other predetermined region shapes.
When antenna 1 under ITU-VA120km/h channel models in based on Fig. 4 a and Fig. 5 a carries out resource impact, system symbol stream can be for example mapped in it is big show centered on subcarrier 5 and subcarrier 6 and symbol 6 and 4 minimum RE of the corresponding channel estimation errors of symbol 7 meet in the rule or irregular area of system symbol stream length, with cause all or most system symbol streams all It is mapped on the RE with less channel estimation errors, herein, refer to that the channel estimation errors are less than or equal to the rule or the overseas RE in region of disorder (i.e. the RE of use transfer check symbol stream) minimum channel estimation errors with smaller channel estimation errors.
And for example, when the antenna 2 under ITU-VA120km/h channel models in based on Fig. 4 b and Fig. 5 b carries out resource impact, such as on each RE that system symbol stream can be mapped in the region comprising the RE with minimum channel estimation errors.It is only for example herein, can also equally utilizes the other mapping modes above stated.
Channel estimation errors distribution based on other antennas in Fig. 2 b- Fig. 2 d and Fig. 3 b- Fig. 3 d and Fig. 4 c- Fig. 4 d and Fig. 5 c- Fig. 5 d, method similar to the above, the mapping that the data flow corresponding to other antennas is proceeded on respective resources block can be utilized.
The above method of the present invention can effectively reduce the Block Error Rate of data transfer.
The Shang Shu Walk rapid S110 and S130 of You Yu can have a variety of different specific implementations respectively, can describe their specific implementation based on specific example further below.
Although the Ge Walk of , are that order is described suddenly in the above description, it can also carry out, can also be parallel carried out Yu the rapid S110 of Walk before the rapid S1 10 of Walk it should be apparent that the order rapid Ge Walk of above is not the rapid S130 of fixed , Walk.
Wei the number of retransmissions needed for Jin mono- Walk reduce residual Block Error Rate and correct detection, one embodiment of the present of invention also according to the statistical property of channel estimation targetedly converts the mapping mode that data flow to resource block when retransmitting, and will send symbol and is mapped to channel estimation errors as much as possible and is different from the RE that transmits before.Fig. 7 show the flow chart included when data retransmit mapping.Mapping method shown in Fig. 7 in addition to Walk rapid S110 and S130, also Bao include Ru Xia Walk it is rapid：
The rapid S150 of Walk, when retransmitting mapping, are mapped to channel estimation errors in the resource block by the system symbol stream in data flow and try one's best in big resource particle substantially.
The system symbol stream in data flow can be for example mapped to according to the channel estimation errors of RE in resource block descending order on multiple RE above, the multiple RE number corresponds to the length of system symbol stream.
The rapid S170 of Walk, are mapped to channel estimation errors in the resource block by the checking symbol stream in the data flow and try one's best in small resource particle substantially.
For example, verification symbol stream can be mapped on described remaining RE below. Shang Shu Walk rapid S150 and S170 are only for example, it is not intended to limit the present invention, also there are other re-transmission mapping modes, Bing Qie Walk rapid S150 and S170 there can also be a variety of different specific implementations respectively, can be illustrated further below based on specific example.
Fig. 8 is the specific example flow that data flow is mapped to resource block according to one embodiment of the present of invention.As shown in figure 8, the flow includes：
The rapid S210 of Walk, system symbol stream are mapped in the resource particle in the first area in resource block centered on the big resource particle for showing channel estimation errors minimum.
In resource particle outside the rapid S230 of Walk, the first area that verification symbol stream is mapped in the resource block.
Before the rapid S210 of row Walk are held, the predetermined first area centered on the minimum resource particle of channel estimation errors can also be shown greatly.The first area can not also be predefined, but system symbol stream can be mapped on the RE of resource block with the channel estimation errors order from small to large according to resource particle directly since the minimum resource particle of channel estimation errors in the rapid S210 of this Walk, so as to form the first area, now RE maximum channel estimation errors are less than or equal to the minimum channel estimation errors of RE outside the first area in the first area.
If predefining the first area before the rapid S210 of Walk.Then there are a variety of methods for predefining the first area, several determination modes are set forth below：
Mode 1, according to the size of the channel estimation errors of each resource particle selected from the resource block be adapted to the system symbol stream length first area, so that the minimum channel estimation errors that channel estimation errors maximum in the first area are less than or equal to outside the first area, namely, all RE in the first area have less channel estimation errors, herein, " smaller channel estimation errors " refer to the channel estimation errors for being less than or equal to RE minimum channel estimation errors outside the first area.
Utilize which, can be easily to the corresponding channel estimation results of Fig. 2 a- Fig. 2 d and Fig. 3 a- Fig. 3 d and Fig. 4 a- Fig. 4 d and Fig. 5 a- Fig. 5 d, select first area, for example for the channel estimation results in Fig. 4 a and Fig. 5 a, it can select to show the irregular area for meeting system symbol stream length centered on subcarrier 5 and 6 and 4 minimum RE of the corresponding channel estimation errors of symbol 6 and 7 greatly.
Mode 2, the determination suitable system symbol stream centered on the minimum resource particle of channel estimation errors It is length and with regular shape the first area.
It is wherein described that there is regular shape can for example refer to for rectangle（Including square）, can also be other axial symmetry or centrosymmetric image.
Now, whole RE in the first area relative to first area outside every RE differ and establish a capital with less channel estimation errors, but the shape for determining, the first area should have as far as possible many RE with less channel estimation errors.
It can be for example in using which based on the selection of the channel estimation errors in Fig. 4 c and Fig. 5 c between subcarrier 1 and subcarrier 10（Including subcarrier 1 and subcarrier 10) and symbol 1 and symbol 10 between（Including symbol 1 and symbol 10) region be first area, it is assumed herein that the size of selected first area meets the length of system symbol stream.
Mode 3, determine centered on the minimum resource particle of channel estimation errors predefined size and the region with regular shape, wherein the predefined size not necessarily meets the length of system symbol stream.
Here, described there is regular shape can for example refer to for rectangle（Including square）, can also be other axial symmetry or centrosymmetric image.
At this moment, the first area is that the size based on the system symbol stream obtains the rectangular area along predetermined Directional Extension Huo Shou Shrink in mapping.Extension Huo Shou Shrink direction can be selected in advance.
For example, using which for example can the channel estimation errors based on respective antenna 4 in Fig. 2 d and Fig. 3 d select between subcarrier 3 and subcarrier 8（Including subcarrier 3 and subcarrier 8) 14 symbols rectangular area.It is assumed herein that the size of selected rectangular area is more than the length of system symbol stream.
Then when being mapped, can by predetermined rectangle according to the length Shou Shrink of system symbol stream be between subcarrier 3 and subcarrier 8（Including subcarrier 3 and subcarrier 8) and symbol 1 and symbol 12 between（Including symbol 1 and symbol 12) between region, and regard the region as first area.
Above-mentioned first area determination mode is merely illustrative, it is not excluded that other determination modes.
Using the S210 and S230 in Fig. 8, the Block Error Rate of data transfer can be effectively reduced, the performance of transmission is improved.
In addition, when needing to carry out data flow re-transmission, re-transmission mapping is carried out suddenly based on Walk Xia such as：The rapid S250 of Walk, when data flow is retransmitted, the resource block is mapped to by the checking symbol stream In in resource particle in the big second area shown centered on the minimum resource particle of channel estimation errors.
During this Walk is rapid, the determination mode of second area can be identical with the determination mode of first area, is different only in that, the size of second area will adapt to the length of checking symbol stream, and the transmittability of second area is consistent with the data volume of checking symbol stream.
The rapid S270 of Walk, the system symbol stream are mapped in the resource particle outside the second area in the resource block.
It is by the position of system symbol stream and checking symbol stream in resource block all or not exclusively exchange in re-transmission mapping mode shown in Walk rapid S250 and S270.When system symbol stream is identical with the length of checking symbol stream, the position of system symbol stream and checking symbol stream in resource block can completely be exchanged.When the length of system symbol stream and checking symbol stream is differed, the position of system symbol stream and checking symbol stream in resource block can not exclusively be exchanged, i.e., partly be exchanged.
The corresponding mapping schemes of Fig. 8 not only reduce the Block Error Rate that can be transmitted for the first time, simultaneously because targetedly having converted mapping mode according to the statistical property of channel estimation in retransmitting, diversity gain is added, the number of retransmissions needed for residual Block Error Rate and correct detection is also reduced.
Shang Shu Walk rapid S250 and S270 are only the example for retransmitting mapping mode, it is not excluded that other modes, the Walk rapid S350 and S370 of figure 9 just show another different re-transmission mapping mode.Fig. 9 Zhong , Walk rapid S310 and S330 are identical Yu Walk rapid S210 and S230, will herein be described in detail, and Jin Dui Walk rapid S350 and S370 make an explanation.
System symbol stream, when retransmitting mapping, is mapped in the resource particle in first area, to change the position of system symbol in the first area by the rapid S350 of Walk according to the mapping order opposite with just passing.
Here, above-mentioned opposite mapping order refers to system symbol and RE sequence of positions.
Suddenly also Ke Jin mono- Walk include this Walk：The first area is divided into the first subregion（Such as region A) and the second subregion（Such as region B), the system symbol stream being mapped to when being passed at the beginning of the data flow in the A of region is mapped to region B when retransmitting, wherein the channel estimation errors of the resource particle in first subregion are less than the channel estimation errors in second subregion.
If the region A and region B size is differed, when retransmitting mapping, system symbol stream in the A of region can partly can to the system symbol stream being transferred in region B, or region B Partly to being transferred to region A.
In resource particle outside Walk rapid 370, the first area that the checking symbol stream is mapped in the resource block according to the mapping order opposite with just passing, to change the position of checking symbol described in the region outside the first area.
Concrete implementation method can be identical Yu Shang Shu Walk rapid 350.
Re-transmission in Fig. 9 reflect penetrate Walk be suddenly retransmit when keep system symbol stream and checking symbol stream mapping region it is constant, in each region, system symbol stream and checking symbol stream are remapped respectively.
In foregoing embodiments, system symbol stream and checking symbol stream and the mapping relations of different zones in resource block are described, the mapping order in respective region is illustrated below.
Enumerate several mapping orders as follows：
(1) when system symbol stream and checking symbol flow to respective area maps, system symbol stream and checking symbol stream can be sequentially mapped in respective region in each resource particle of each symbol according to the order of the call number increasing or decreasing of respective region internal symbol.
§ Jie, are mapped one symbol of a symbol in respective region.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different.
(2) when system symbol stream and checking symbol flow to respective area maps, system symbol and checking symbol stream can be sequentially mapped in respective region in each resource particle of each subcarrier from the order of increasing or decreasing according to the call number of subcarrier in respective region.
§ Jie, are mapped one subcarrier of a subcarrier in respective region.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different.
(3), can be according to the channel estimation errors of resource particle in respective region from each resource particle that system symbol stream and checking symbol stream are mapped in respective region by small arrival or order from big to small when system symbol stream and checking symbol flow to respective area maps.
§ Jie, are mapped from inside to outside or from outside to inside in respective region.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different. The above method of the present invention is applicable not only to LTE system, is applied equally to lte-a system, and be applied to the system that LTE and LTE-A coexist.When in multiple coexistence of systems, such as LTE Rel-8 and LTE-A Rel-10 coexistence of systems, then because the multi-antenna transmission in Rel-10 needs to take extra antenna progress channel estimation the operation of punching, therefore, when Rel-8 systems carry out subcarrier maps, to avoid system modulation symbol being mapped to the pilot frequency locations of Rel-10 antennas.The transmission RE positions of system symbol stream and checking symbol stream are carried out to timing, also to avoid system modulation symbol being mapped to the pilot frequency locations of Rel-10 antennas, with so as to prevent significant data to be struck off.
In a word, system symbol stream in the data flow is being mapped to substantially during Walk are rapid in the less resource particle of the channel estimation errors, it is to avoid system modulation symbol in system symbol stream is mapped to the pilot frequency locations in the corresponding resource block structures of each system in condition of multi-system coexistence pattern.
The present invention can both have been realized, can also realize in a user device in network side in the mapping method that data that are above stating and will be described later flow to resource block such as in base station, base station controller and relay station.Specifically, above-mentioned each mapping method can be realized in the resource mapper of network side and the emitter of user equipment side.
Figure 11 show the simple structure schematic diagram of the base station in wireless communication system or the emitter in user equipment, in Figure 11, scrambler is used to scramble the information bit after coding, for example, operate coded information bits with some specific binary sequence summation and then modulus 2.Symbol modulator is used for the symbol constellation point that the information bit after scrambling is modulated into QPSK, 16QAM, 64QAM etc..The streams of code words that respective encoder is finally exported is mapped on different layers by the mapper of module codeword current to layer, obtains the signal on multiple layers.Precoder is used to the signal on floor being converted into n roads signal, and n is transmission antenna number.Physical resource mapper is used to the serial signal of each branch road being mapped to time-frequency two-dimensional physical resource, and ofdm signal maker is used for the time-domain signal on each antenna of signal generation on time-frequency two-dimensional physical resource and sent through respective transmission antenna to physical channel.
The present invention is that improvement has been made to existing physical resource mapper and a kind of new physical resource mapper is proposed, and the physical resource mapper is arranged in the emitter in base station or relay station, can also be arranged in the emitter in user equipment.As shown in Figure 10, the physical resource mapper includes map unit 420, and for data flow to be mapped into resource block in first pass, the map unit 420 includes again： First map unit 421, the system symbol stream in the data flow is mapped to channel estimation errors in the resource block and tried one's best in small resource particle by it substantially.For example, the system symbol stream in data flow can be mapped on each RE in the first area for including the RE with minimum channel estimation errors of resource block by the first map unit 421.Wherein, nearly all RE has less channel estimation errors in the first area, and less channel estimation errors described herein are met, the minimum channel evaluated error for the RE that the less channel estimation errors are less than or equal to outside the first area.
Second map unit 422, the checking symbol stream in the data flow is mapped to channel estimation errors in the resource block and tried one's best in big resource particle by it substantially.For example, the second map unit 422 can be used for verification symbol stream being mapped on the RE outside the first area.
In another embodiment of the present invention, the physical resource mapper also includes remapping unit 430, and remapping for resource block is flowed to for carrying out data.As shown in Figure 10, the unit 430 that remaps also includes：
First remaps unit 431, and the system symbol stream in the data flow is mapped to channel estimation errors in the resource block when retransmitting and tried one's best in big resource particle by it substantially.
Second remaps unit 432, and the checking symbol stream in the data flow is mapped to channel estimation errors in the resource block and tried one's best in small resource particle by it substantially.
In another embodiment of the present invention, first map unit 421 is used for the resource particle being mapped to the system symbol stream in the first area in resource block centered on the big resource particle for showing channel estimation errors minimum.
Second map unit 422 is used to being mapped to the checking symbol stream into the resource particle outside the first area in the resource block.
In another embodiment of the present invention, first, which retransmits map unit 431, is used for when data flow is retransmitted, and the checking symbol stream is mapped in the resource particle in the second area in the resource block centered on the big resource particle for showing channel estimation errors minimum.Wherein, the determination mode of the second area can be identical with the determination mode of first area, is different only in that, the size of second area will adapt to the length of checking symbol stream, and the transmittability of second area is consistent with the data volume of checking symbol stream.
Second re-transmission map unit 432 is additionally operable to, when data flow is retransmitted, the system symbol stream is mapped in the resource particle outside the second area in the resource block. In another embodiment of the present invention, first re-transmission map unit 431 is additionally operable to when data flow is retransmitted, the system symbol stream is mapped in the resource particle in the first area in resource block centered on the big resource particle for showing channel estimation errors minimum according to the mapping order opposite with just passing, to change the position of system symbol in the first area.For example, the first area is divided into the first subregion（Such as region A) and the second subregion（Such as region B), the system symbol stream being mapped to when being passed at the beginning of the data flow in the A of region is mapped to region B when retransmitting, wherein the channel estimation errors of the resource particle in first subregion are less than the channel estimation errors in second subregion.If the region A and region B size is differed, when retransmitting mapping, system symbol stream in the A of region can partly can be partly to being transferred to region A to the system symbol stream being transferred in region B, or region B.
Second re-transmission map unit 432 is additionally operable to when data flow is retransmitted, the checking symbol stream is mapped to according to the mapping order opposite with just passing in the resource particle outside the first area in the resource block, to change the position of checking symbol described in the region outside the first area.
In another embodiment of the present invention, as shown in Figure 10, the physical resource mapper also includes：Area selecting unit 410, it selects the first area of the size of the suitable system symbol stream according to the size of the channel estimation errors of each resource particle out of described resource block so that maximum channel estimation errors are less than or equal to channel estimation errors minimum outside the first area in the first area.The area selecting unit 410 is also based on the various ways of determination first area described above to determine the second area.
In another embodiment of the present invention, the area selecting unit determines the rectangular area of predefined size centered on the minimum resource particle of channel estimation errors；Wherein, the first area is that the size based on the system symbol stream obtains the rectangular area along predetermined Directional Extension Huo Shou Shrink.
In another embodiment of the present invention, system symbol stream is sequentially mapped in the first area in each resource particle of each symbol by first map unit 421 according further to the order of the call number increasing or decreasing of the first area internal symbol；Second map unit 422 is sequentially mapped to outside the first area in each resource particle of each symbol according further to the order of the call number increasing or decreasing of the first area symbol external by symbol stream is verified.It is, the map unit 422 of the first map unit 421 and second is carried out one symbol of a symbol in respective region Mapping.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different.
In another embodiment of the present invention, system symbol stream is sequentially mapped in the first area in each resource particle of each subcarrier by first map unit 421 in terms of mapping order according further to the call number of subcarrier from the order of increasing or decreasing；Second map unit 422 is sequentially mapped to outside the first area in each resource particle of each subcarrier according further to the call number of subcarrier in terms of mapping order from the order of increasing or decreasing by symbol stream is verified.It is, the map unit 422 of the first map unit 421 and second is mapped one subcarrier of a subcarrier in respective region.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different.
In another embodiment of the present invention, in each resource particle that system symbol stream is mapped in the first area according further to the channel estimation errors order from small arrival or from big to small of resource particle in the first area in terms of the mapping order by first map unit 421；Second map unit 422 will be verified in each resource particle that symbol stream is mapped to outside the first area in terms of mapping order according further to the channel estimation errors of resource particle outside the first area from small arrival or descending order.It is, the map unit 422 of the first map unit 421 and second is mapped from inside to outside or from outside to inside in respective region.Wherein, when system symbol stream and checking symbol stream are respectively mapped to respective region, each self-corresponding mapping order can be with identical, can also be different.
Remap first in unit 430 remap unit 431 and second remap unit 432 can be based on carrying out system symbol stream with the same or different mapping order of first map unit, 421 and second map unit 422 and checking symbol flows to the mapping of resource block.
In another embodiment of the present invention, first map unit also avoids the pilot frequency locations being mapped to system modulation symbol in system symbol stream in the corresponding resource block structures of each system in condition of multi-system coexistence pattern, so as to prevent from destroying when significant data is perforated.
It should be appreciated that two or more units in device described here of the invention can be merged into a unit, each unit can also more be subdivided into multiple subelements, not affect the realization of the present invention.
And it is to be understood that various pieces described above of the invention can by hardware, software, Firmware or combinations thereof are realized.The present invention in the above-described embodiment, realize by many Walk are rapid or method can in memory and by suitable instruction execution system be performed with storage software or firmware.
Any process or the method description otherwise described in flow chart or herein or frame are construed as, represent to include it is one or more for realize specific logical function or during the rapid executable instructions of Walk code module, fragment or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein, can not be by order that is shown or discussing, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be described by the present invention those skilled in the art and be understood.
The logic and/or Walk for representing or otherwise describing herein in flow charts are rapid, for example, the order list of the executable instruction for realizing logic function is considered, be may be embodied in any computer-readable medium, for instruction execution system, device or equipment（As computer based system including the system of processor or other can be from instruction execution system, device or equipment instruction fetch and the system of execute instruction）Use, or combine these instruction execution systems, device or equipment and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicating, propagating or transmission procedure for instruction execution system, device or equipment or combines these instruction execution systems, device or equipment and the device used.Computer-readable medium can for example be but not limited to electronics, magnetic, optical, electromagnetic, infrared or semiconductor system, device, equipment or propagation medium.The more specifically example of computer-readable medium（Non-exhaustive list）Including following：Electrical connection section with one or more wirings（Electronic installation）, portable computer diskette box
(magnetic device）, random access memory（RAM) (electronic installation）, read-only storage（ROM) (electronic installation）, Erasable Programmable Read Only Memory EPROM（EPROM or flash memory）（Electronic installation）, optical fiber（Electro-optical device）, and portable optic disk read-only storage（CDROM) (Optical devices）.In addition, computer-readable medium, which can even is that, to print the paper or other suitable media of described program thereon, because can be for example by carrying out optical scanner to paper or other media, then enter edlin, interpret or handled electronically to obtain described program with other suitable methods if necessary, be then stored in computer storage.
Above-mentioned explanatory note and accompanying drawing show a variety of features of the present invention.It is described above and attached it should be appreciated that those of ordinary skill in the art can prepare suitable computer code to realize Ge Ge Walk for being illustrated in figure are rapid and process.It is also understood that various terminals described above, computer, server, network etc. can be any kind of, and the computer code can be prepared according to disclosure to realize the present invention using described device.
Although only one being directed to above in several embodiments illustrated or more describes the specific features of the present invention, but can be combined this feature with other one or more features of other embodiment as needed and from the aspect of favourable to any given or concrete application.Finally, it can further be stated that, term " including ", " including " or any other variant thereof is intended to cover non-exclusive inclusion, so that process, method, article or equipment including a series of key elements not only include those key elements, but also other key elements including being not expressly set out, or also include for this process, method, article or the intrinsic key element of equipment.
Although embodiments of the invention are described in detail with reference to accompanying drawing above, it is to be understood that embodiments described above is only intended to the explanation present invention, and it is not construed as limiting the invention.For those skilled in the art, above-mentioned embodiment can be made various changes and modifications without departing from the spirit and scope of the invention.Therefore, the scope of the present invention is only limited by appended claim and its equivalents.

Claims (1)

权 利 要 求 Rights request 1、 一种数据流到资源块的映射法， 其中， 该方法包括如下歩骤： 将所述数据流中的系统符号流基本映射到所述资源块中信道估计误 差尽量小的资源粒子上； 1. A method for mapping a data stream to a resource block, wherein the method includes the following steps: basically mapping a system symbol stream in the data stream to a resource element in the resource block whose channel estimation error is as small as possible; 将所述数据流中的校验符号流基本映射到所述资源块中信道估计误 差尽量大的资源粒子上。 The check symbol stream in the data stream is basically mapped to the resource element in the resource block whose channel estimation error is as large as possible. 2、 根据权利要求 1所述的方法， 其中， 所述方法还包括如下歩骤： 在数据流重传时， 将所述数据流中的系统符号流基本映射到所述资 源块中信道估计误差尽量大的资源粒子上； 2. The method according to claim 1, wherein, the method further comprises the following step: when the data stream is retransmitted, basically mapping the system symbol stream in the data stream to the channel estimation error in the resource block On resource particles as large as possible; 将所述数据流中的校验符号流基本映射到所述资源块中信道估计误 差尽量小的资源粒子上。 The check symbol stream in the data stream is basically mapped to the resource element in the resource block with the channel estimation error as small as possible. 3、 根据权利要求 1所述的方法， 其中： 3. The method according to claim 1, wherein: 将所述数据流中的系统符号流基本映射到所述资源块中信道估计误 差尽量小的资源粒子上包括： 将所述系统符号流映射到资源块中大致以 信道估计误差最小的资源粒子为中心的第一区域内的资源粒子上； 以及 将所述数据流中的校验符号流基本映射到所述资源块中信道估计误 差尽量大的资源粒子上包括： 将所述校验符号流映射到所述资源块中的 所述第一区域之外的资源粒子上。 Basically mapping the system symbol stream in the data stream to the resource element with the smallest channel estimation error in the resource block includes: mapping the system symbol stream to the resource block roughly using the resource element with the smallest channel estimation error as On the resource elements in the first area of the center; and basically mapping the check symbol stream in the data stream to the resource element with as large a channel estimation error as possible in the resource block includes: mapping the check symbol stream to resource elements outside the first region in the resource block. 4、 根据权利要求 3所述的方法， 其中， 所述方法还包括如下歩骤： 在数据流重传时， 将所述校验符号流映射到所述资源块中大致以信 道估计误差最小的资源粒子为中心的第二区域内的资源粒子上； 以及 将所述系统符号流映射到所述资源块中的所述第二区域之外的资源 粒子上。 4. The method according to claim 3, wherein, the method further comprises the following step: when the data stream is retransmitted, mapping the check symbol stream to the resource block with the smallest channel estimation error. on resource elements in a second region centered on the resource element; and mapping the system symbol stream to resource elements outside the second region in the resource block. 5、 根据权利要求 3所述的方法， 其中， 所述方法还包括： 在数据流重传时， 按照与初传相反的映射顺序将所述系统符号流映 射到资源块中大致以信道估计误差最小的资源粒子为中心的第一区域内 的资源粒子上， 以改变所述第一区域中系统符号的位置； 和 /或 5. The method according to claim 3, wherein, the method further comprises: when the data stream is retransmitted, mapping the system symbol stream into resource blocks in a mapping order opposite to that of the initial transmission, approximately equal to the channel estimation error on the resource element in the first area centered on the smallest resource element, to change the position of the system symbol in the first area; and/or 在数据流重传时， 按照与初传相反的映射顺序将所述校验符号流映 射到所述资源块中的所述第一区域之外的资源粒子上， 以改变所述第一 区域之外的区域中所述校验符号的位置。 When the data stream is retransmitted, the check symbols are stream-mapped in the reverse mapping order of the initial transmission projecting to resource elements in the resource block outside the first area, so as to change the position of the check symbol in the area outside the first area. 6、 根据权利要求 5所述的方法， 其中， 所述按照与初传相反的映射 顺序将所述系统符号流映射到资源块中大致以信道估计误差最小的资源 粒子为中心的第一区域内的资源粒子上包括： 将所述第一区域划分为第 一子区域和第二子区域， 将在所述数据流初传时映射到所述第一子区域 中的系统符号流在重传时映射到所述第二子区域， 其中所述第一子区域 中的资源粒子的信道估计误差小于所述第二子区域中的信道估计误差。 6. The method according to claim 5, wherein the system symbol stream is mapped to the first region of the resource block roughly centered on the resource element with the smallest channel estimation error according to the reverse mapping order of the initial transmission The resource element of includes: dividing the first area into a first sub-area and a second sub-area, and retransmitting the system symbol stream mapped to the first sub-area when the data stream is initially transmitted mapped to the second sub-region, wherein channel estimation errors of resource elements in the first sub-region are smaller than channel estimation errors in the second sub-region. 7、 根据权利要求 3所述的方法， 其中， 所述方法还包括： 根据各资源粒子的信道估计误差的大小从所述资源块内选择适合所 述系统符号流的大小的所述第一区域， 使得所述第一区域内最大的信道 估计误差小于或等于所述第一区域外最小的信道估计误差。 7. The method according to claim 3, wherein the method further comprises: selecting the first region suitable for the size of the system symbol stream from within the resource block according to the size of the channel estimation error of each resource element , so that the largest channel estimation error in the first area is smaller than or equal to the smallest channel estimation error outside the first area. 8、 根据权利要求 3所述的方法， 其中， 所述方法还包括： 以信道估计误差最小的资源粒子为中心确定预定大小的所述第一区 域。 8. The method according to claim 3, wherein the method further comprises: determining the first region of a predetermined size with the resource element having the smallest channel estimation error as the center. 9、 根据权利要求 3所述的方法， 其中， 所述方法还包括： 以信道估计误差最小的资源粒子为中心确定预定大小的矩形区域； 其中， 所述第一区域为基于所述系统符号流的大小将所述矩形区域 沿预定的方向扩展或收縮得到。 9. The method according to claim 3, wherein the method further comprises: determining a rectangular area of a predetermined size centered on the resource element with the smallest channel estimation error; wherein the first area is based on the system symbol stream The size of is obtained by expanding or contracting the rectangular area along a predetermined direction. 10、 根据权利要求 3所述的方法， 其中： 10. The method of claim 3, wherein: 将系统符号流映射到资源块中大致以信道估计误差最小的资源粒子 为中心的第一区域内的资源粒子上包括： 按照所述第一区域内符号的索 引号递增或递减的顺序将系统符号流依次映射到所述第一区域内各个符 号的各个资源粒子上； Mapping the system symbol flow to the resource element in the first area of the resource block roughly centering on the resource element with the smallest channel estimation error includes: The stream is sequentially mapped to each resource element of each symbol in the first area; 将校验符号流映射到所述资源块中的所述第一区域之外的资源粒子 上包括： 按照所述第一区域外符号的索引号递增或递减的顺序将校验符 号流依次映射到所述第一区域外各个符号的各个资源粒子上。 Mapping the check symbol stream to resource elements outside the first area in the resource block includes: sequentially mapping the check symbol stream to on each resource element of each symbol outside the first area. 11、 根据权利要求 3所述的方法， 其中： 11. The method of claim 3, wherein: 将系统符号流映射到资源块中大致以信道估计误差最小的资源粒子 为中心的第一区域内的资源粒子上包括： 按照所述第一区域内子载波的 索引号从递增或递减的顺序将系统符号流依次映射到所述第一区域内各 个子载波的各个资源粒子上； Map the system symbol stream to the resource element in the resource block with the smallest channel estimation error The resource elements in the first area centered include: each resource element that sequentially maps the system symbol stream to each sub-carrier in the first area according to the index numbers of the sub-carriers in the first area in ascending or descending order superior; 将校验符号流映射到所述资源块中的所述第一区域之外的资源粒子 上包括： 按照所述第一区域外子载波的索引号从递增或递减的顺序将校 验符号流依次映射到所述第一区域外各个子载波的各个资源粒子上。 Mapping the check symbol stream to the resource elements outside the first area in the resource block includes: sequentially mapping the check symbol stream in the order of increasing or decreasing index numbers of the subcarriers outside the first area mapped to each resource element of each subcarrier outside the first area. 12、 根据权利要求 3所述的方法， 其中： 12. The method of claim 3, wherein: 将系统符号流映射到资源块中大致以信道估计误差最小的资源粒子 为中心的第一区域内的资源粒子上包括： 按照所述第一区域内资源粒子 的信道估计误差从小到达或从大到小的顺序将系统符号流映射到所述第 一区域内的各资源粒子上； Mapping the system symbol stream to the resource element in the first area of the resource block roughly centered on the resource element with the smallest channel estimation error includes: according to the channel estimation error of the resource element in the first area from small to small or from large to large A small order maps the system symbol stream to each resource element in the first area; 将校验符号流映射到所述资源块中的所述第一区域之外的资源粒子 上包括： 按照所述第一区域外资源粒子的信道估计误差从小到达或从大 到小顺序将校验符号流映射到所述第一区域外的各资源粒子上。 Mapping the check symbol stream to the resource elements outside the first area in the resource block includes: according to the channel estimation error of the resource elements outside the first area from small to small or from large to small The symbol stream is mapped to each resource element outside the first area. 13、 根据权利要求 1-12中任意一项所述的方法， 其中， 在将所述数 据流中的系统符号流基本映射到所述信道估计误差较小的资源粒子上的 歩骤中， 避免将系统符号流中的系统调制符号映射到在多系统共存时另 一系统需要独占的资源粒子上。 13. The method according to any one of claims 1-12, wherein, in the step of basically mapping the systematic symbol stream in the data stream to the resource element with a smaller channel estimation error, avoiding The system modulation symbols in the system symbol stream are mapped to resource elements that another system needs to monopolize when multiple systems coexist. 14、 一种数据流到资源块的映射装置， 其中， 该装置包括： 第一映射单元， 其将所述数据流中的系统符号流基本映射到所述资 源块中信道估计误差尽量小的资源粒子上； 14. A device for mapping a data stream to a resource block, wherein the device includes: a first mapping unit, which basically maps a systematic symbol stream in the data stream to a resource with as small a channel estimation error as possible in the resource block on the particle; 第二映射单元， 其将所述数据流中的校验符号流基本映射到所述资 源块中信道估计误差尽量大的资源粒子上。 The second mapping unit basically maps the check symbol stream in the data stream to the resource element in the resource block with as large a channel estimation error as possible. 15、 根据权利要求 14所述的装置， 其中， 所述装置还包括： 第一重映射单元， 其在重传时将所述数据流中的系统符号流基本映 射到所述资源块中信道估计误差尽量大的资源粒子上； 以及 15. The device according to claim 14, wherein the device further comprises: a first remapping unit, which basically maps the system symbol stream in the data stream to the channel estimation in the resource block during retransmission On resource particles with as large an error as possible; and 第二重映射单元， 其将所述数据流中的校验符号流基本映射到所述 资源块中信道估计误差尽量小的资源粒子上。 The second remapping unit basically maps the check symbol stream in the data stream to the resource element in the resource block whose channel estimation error is as small as possible. 16、 根据权利要求 14所述的装置， 其中： 所述第一映射单元将还用于将所述系统符号流映射到资源块中大致 以信道估计误差最小的资源粒子为中心的第一区域内的资源粒子上； 以及 所述第二映射单元还用于将所述校验符号流映射到所述资源块中的 所述第一区域之外的资源粒子上。 16. The apparatus of claim 14, wherein: The first mapping unit will also be used to map the system symbol stream to the resource element in the first area of the resource block, which is roughly centered on the resource element with the smallest channel estimation error; and the second mapping unit is also It is used for mapping the check symbol stream to resource elements outside the first area in the resource block. 17、根据权利要求 16所述的装置，其中，所述装置还包括如下歩骤: 第一重传映射单元， 其在数据流重传时， 将所述校验符号流映射到 所述资源块中大致以信道估计误差最小的资源粒子为中心的第二区域内 的资源粒子上； 以及 17. The device according to claim 16, wherein the device further comprises the following steps: a first retransmission mapping unit, which maps the check symbol stream to the resource block when the data stream is retransmitted on the resource elements in the second area roughly centered on the resource element with the smallest channel estimation error; and 第二重传映射单元， 其在数据流重传时， 将所述系统符号流映射到 所述资源块中的所述第二区域之外的资源粒子上。 A second retransmission mapping unit, which maps the system symbol stream to resource elements outside the second area in the resource block when the data stream is retransmitted. 18、 根据权利要求 16所述的装置， 其中， 所述装置还包括： 第一重传映射单元， 其在数据流重传时， 按照与初传相反的映射顺 序将所述系统符号流映射到资源块中大致以信道估计误差最小的资源粒 子为中心的第一区域内的资源粒子上， 以改变所述第一区域中系统符号 的位置； 和 /或 18. The device according to claim 16, wherein the device further comprises: a first retransmission mapping unit, which maps the system symbol stream to the On the resource element in the first area roughly centered on the resource element with the smallest channel estimation error in the resource block, so as to change the position of the system symbol in the first area; and/or 第二重传映射单元， 其在数据流重传时， 按照与初传相反的映射顺 序将所述校验符号流映射到所述资源块中的所述第一区域之外的资源粒 子上， 以改变所述第一区域之外的区域中所述校验符号的位置。 a second retransmission mapping unit, which maps the check symbol stream to resource elements outside the first area in the resource block according to the reverse mapping order of the initial transmission when the data stream is retransmitted, to change the position of the check symbol in the area other than the first area. 19、 根据权利要求 16所述的装置， 其中， 所述装置还包括： 区域选择单元， 其根据各资源粒子的信道估计误差的大小从所述资 源块内选择适合所述系统符号流的大小的所述第一区域， 使得所述第一 区域内最大的信道估计误差小于或等于所述第一区域外最小的信道估计 误差。 19. The device according to claim 16, wherein the device further comprises: a region selection unit, which selects from the resource blocks suitable for the size of the system symbol stream according to the size of the channel estimation error of each resource element In the first area, the largest channel estimation error in the first area is smaller than or equal to the smallest channel estimation error outside the first area. 20、 根据权利要求 16所述的装置， 其中， 所述装置还包括： 区域选择单元， 其以信道估计误差最小的资源粒子为中心确定预定 大小的矩形区域； 20. The device according to claim 16, wherein the device further comprises: an area selection unit, which determines a rectangular area of a predetermined size centered on the resource element with the smallest channel estimation error; 其中， 所述第一区域为基于所述系统符号流的大小将所述矩形区域 沿预定的方向扩展或收縮得到。 Wherein, the first area is obtained by expanding or contracting the rectangular area along a predetermined direction based on the size of the system symbol stream. 21、 根据权利要求 16所述的装置， 其中： 所述第一映射单元还按照所述第一区域内符号的索引号递增或递减 的顺序将系统符号流依次映射到所述第一区域内各个符号的各个资源粒 子上； 21. The apparatus of claim 16, wherein: The first mapping unit also sequentially maps the system symbol stream to each resource element of each symbol in the first area in the order of increasing or decreasing index numbers of the symbols in the first area; 所述第二映射单元还按照所述第一区域外符号的索引号递增或递减 的顺序将校验符号流依次映射到所述第一区域外各个符号的各个资源粒 子上。 The second mapping unit also sequentially maps the check symbol stream to each resource element of each symbol outside the first area in the order of increasing or decreasing index numbers of symbols outside the first area. 22、 根据权利要求 16所述的装置， 其中： 22. The apparatus of claim 16, wherein: 所述第一映射单元还按照所述第一区域内子载波的索引号从递增或 递减的顺序将系统符号流依次映射到所述第一区域内各个子载波的各个 资源粒子上； The first mapping unit also sequentially maps the system symbol stream to each resource element of each subcarrier in the first region in ascending or descending order according to the index numbers of the subcarriers in the first region; 所述第二映射单元还按照所述第一区域外子载波的索引号从递增或 递减的顺序将校验符号流依次映射到所述第一区域外各个子载波的各个 资源粒子上。 The second mapping unit also sequentially maps the check symbol stream to each resource element of each subcarrier outside the first region in ascending or descending order according to the index numbers of the subcarriers outside the first region. 23、 根据权利要求 16所述的装置， 其中： 23. The apparatus of claim 16, wherein: 所述第一映射单元还按照所述第一区域内资源粒子的信道估计误差 从小到达或从大到小的顺序将系统符号流映射到所述第一区域内的各资 源粒子上； The first mapping unit also maps the system symbol flow to each resource element in the first area in the order of the channel estimation errors of the resource elements in the first area from small to small or from large to small; 所述第二映射单元还按照所述第一区域外资源粒子的信道估计误差 从小到达或从大到小顺序将校验符号流映射到所述第一区域外的各资源 粒子上。 The second mapping unit also maps the check symbol stream to each resource element outside the first area in order of the channel estimation error of the resource element outside the first area from small to small or from large to small. 24、根据权利要求 14-23中任意一项所述的装置， 其中， 所述第一映 射单元还避免将系统符号流中的系统调制符号映射到在多系统共存时另 一系统需要独占的资源粒子上。 24. The device according to any one of claims 14-23, wherein the first mapping unit also avoids mapping the system modulation symbols in the system symbol stream to resources that another system needs to monopolize when multiple systems coexist on the particle. 25、 一种计算机可读程序， 其中， 当在多输入多输出系统中执行所 述程序时， 所述程序使得计算机在多输入多输出系统中执行如权利要求 1-13中任意一项所述的数据流到资源块的映射方法。 25. A computer-readable program, wherein, when the program is executed in a multiple-input multiple-output system, the program causes the computer to execute the program described in any one of claims 1-13 in the multiple-input multiple-output system The mapping method of data streams to resource blocks. 26、 一种存储有计算机可读程序的存储介质， 其中， 所述计算机可 读程序使得计算机在多输入多输出系统中执行如权利要求 1-13中任意一 项所述的数据流到资源块的映射方法。 26. A storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the data flow to resource block according to any one of claims 1-13 in a multiple-input multiple-output system The mapping method.
CN2009801626857A 2009-12-23 2009-12-23 Method and apparatus for mapping data streams to resource block in wireless communication system Pending CN102640468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/075866 WO2011075889A1 (en) 2009-12-23 2009-12-23 Method and apparatus for mapping data streams to resource block in wireless communication system

Publications (1)

Publication Number Publication Date
CN102640468A true CN102640468A (en) 2012-08-15

Family

ID=44194906

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009801626857A Pending CN102640468A (en) 2009-12-23 2009-12-23 Method and apparatus for mapping data streams to resource block in wireless communication system

Country Status (2)

Country Link
CN (1) CN102640468A (en)
WO (1) WO2011075889A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830409A (en) * 2019-11-15 2020-02-21 同方电子科技有限公司 Exogenous radiation radar reference channel estimation and channel estimation model training method
CN112672422A (en) * 2020-12-17 2021-04-16 中电科仪器仪表有限公司 5G NR demodulation signal time frequency resource allocation display method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014190546A1 (en) * 2013-05-31 2014-12-04 华为技术有限公司 Decoding method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119178A (en) * 2006-08-01 2008-02-06 华为技术有限公司 Signal sending and receiving method and signal sending and receiving device
CN101350697A (en) * 2007-07-19 2009-01-21 富士通株式会社 Device and method for symbol interleaving and channel mapping and mobile communication system
KR20090031020A (en) * 2007-09-21 2009-03-25 삼성전자주식회사 Method and apparatus for transmitting and receiving control information in mobile communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101330346A (en) * 2007-06-22 2008-12-24 华为技术有限公司 Method and device for processing control signaling information

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119178A (en) * 2006-08-01 2008-02-06 华为技术有限公司 Signal sending and receiving method and signal sending and receiving device
CN101350697A (en) * 2007-07-19 2009-01-21 富士通株式会社 Device and method for symbol interleaving and channel mapping and mobile communication system
KR20090031020A (en) * 2007-09-21 2009-03-25 삼성전자주식회사 Method and apparatus for transmitting and receiving control information in mobile communication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830409A (en) * 2019-11-15 2020-02-21 同方电子科技有限公司 Exogenous radiation radar reference channel estimation and channel estimation model training method
CN112672422A (en) * 2020-12-17 2021-04-16 中电科仪器仪表有限公司 5G NR demodulation signal time frequency resource allocation display method
CN112672422B (en) * 2020-12-17 2023-06-13 中电科思仪科技股份有限公司 A 5G NR demodulated signal time-frequency resource allocation display method

Also Published As

Publication number Publication date
WO2011075889A1 (en) 2011-06-30

Similar Documents

Publication Publication Date Title
CN105357155B (en) Method and device for sending and receiving control information
US7684753B2 (en) Method and device for transmission parameter selection in mobile communications
US8724738B2 (en) Multidimensional constellations for coded transmission
CN102299769B (en) Downlink control information transmission method and device
US8761114B2 (en) Method and apparatus for transmitting/receiving multiple codewords in SC-FDMA system
CN101873207B (en) Retransmission system and method of multi-antenna system uplink transmission block
WO2018199626A1 (en) Method and apparatus for higher rank csi reporting in advanced wireless communication systems
CN102088429A (en) A method and device for demodulation reference symbol port mapping
CN102119497A (en) Method and apparatus for the transmission of a control signal in a radio communication system
CN101589572A (en) Encodes uplink acknowledgments for downlink transmissions
CN102763360A (en) Method and apparatus for transmitting downlink scheduling signaling
EP3800945B1 (en) Power allocation method and related device
CN105900387A (en) Resource allocation method and device
CN101252417A (en) Method and system for communicating information in a wireless communication system
CN101507167A (en) MIMO transmitter and receiver for supporting downlink communication of single channel codewords
US20170163448A1 (en) Multiple-input multiple-output orthogonal frequency division multiplexing communication system and method for signal compensation
WO2009063342A2 (en) Method, apparatus and computer readable medium providing power allocation for beamforming with minimum bler in an mimo-ofdm system
CN115987470B (en) A communication method and device
CN107659349A (en) Method and device in wireless transmission
US20160366006A1 (en) Method and device for generating non-gaussian interference channel in wireless communication system
JP5487090B2 (en) Radio signal processing method and radio communication apparatus
CN102739363B (en) Data transmission method, system and related equipment
CN102640468A (en) Method and apparatus for mapping data streams to resource block in wireless communication system
US8385489B2 (en) Methods and apparatus for wireless channel estimation using interpolation elimination in the Eigen domain
US20120147829A1 (en) Pilot addition method and pilot addition apparatus

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
AD01 Patent right deemed abandoned

Effective date of abandoning: 20120815

C20 Patent right or utility model deemed to be abandoned or is abandoned