CN102640470B - Data sending and receiving method, apparatus and system being applied in orthogonal frequency division multiple access system - Google Patents
Data sending and receiving method, apparatus and system being applied in orthogonal frequency division multiple access system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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Abstract
The embodiment of the invention provides a data sending and receiving method, an apparatus and a system being applied in an orthogonal frequency division multiple access system. The sending method includes the following steps: according to the way of bearing code, the data of corresponding length in one code is collected to put on a resource block PRB; the data is sent by taking PRB as a unit. The embodiment of the invention also defines multiple ways of PRB bearing FEC code. The ways of PRB bearing FEC code are configurable, which solves the problems of low data transmission efficiency in existing OFDM system and user experience, and then improves the data transmission efficiency and user satisfaction.
Description
Technical field
The present invention relates to communication technical field, specifically, relate to a kind of data input and data output method, Apparatus and system being applied in orthogonal frequency division multiple access system.
Background technology
OFDM (OFDMA, Orthogonal Frequency Division Multiple Access) is divided into transmission bandwidth a series of subcarrier collection of the non-overlapping copies of quadrature, different subcarrier collection is distributed to different users and realize multiple access.OFDMA scheme can be regarded as total resources (time, bandwidth) are cut apart in time, frequency, realizes multiple access.At the wireless communication system of current point-to-multipoint (as WIMAX (Worldwide Interoperability for Microwave Access, be worldwide interoperability for microwave access) and LTE (Long Term Evolution, Long Term Evolution), system), adopted OFDMA technology.OFDMA technology can be applicable to the point-to-multipoint system of EOC (Ethernet over Cable, i.e. coaxial cable Ethernet) too.
In the point-to-multipoint system of OFDMA, local side is responsible for distributing each user in the time-frequency piece resource of up-downlink direction, informs the time-frequency block message of its up-downgoing of user in each downlink frame by specific field (as up mapping (UL-MAP) and descending mapping (DL-MAP) message MAP message).At down direction, user receives and extracts data according to the information of MAP indication at the time-frequency piece under own; At up direction, user sends data according to the information of MAP indication at the time-frequency piece under own.
Existing OFDMA system forms time slot (Slot) or Physical Resource Block (Physical Resource Block, hereinafter referred PRB) by uplink and downlink time-frequency domain physical resource, carries out scheduling and the distribution of data as unit.When transfer of data, need the data based described time slot of transmission or the length of Physical Resource Block to encode, form code word one by one, send to opposite equip. to receive the code word after coding.This technology of carrying out transfer of data by time slot or Physical Resource Block, the code word size of its support becomes multiple relation with time slot or PRB size, it is the restriction that numeral length is subject to PRB or time slot self length, and the length of described PRB or time slot is fixing, and then make the code length of existing OFDMA system transmission limited, and then efficiency is low while causing transfer of data, poor user experience.For example: active user's data traffic is less, still adopt the code word of fixing code length to go coding and then transmission, can have wait time delay for piecing together code word, cause the time delay of real time business, and then efficiency is low while making transfer of data, poor user experience.
Summary of the invention
The object of this invention is to provide a kind of data transmission method for uplink, Apparatus and system being applied in orthogonal frequency division multiple access system, limited for solving the code length of prior art OFDMA system transmission, and then efficiency is low while causing transfer of data, the problem of poor user experience, and then improved data transmission efficiency and user's satisfaction.
For achieving the above object, the present invention provides a kind of data transmission method for uplink of the OFDMA of employing system in first aspect.The method comprises the following steps: according to code word bearing mode, extracts the data placement of corresponding length in a code word on Resource Block PRB; YiPRBWei unit carries out data transmission.
In second aspect, the invention provides a kind of data receive method of the OFDMA of employing system.The method comprises the following steps: to receive PRB data; According to code word bearing mode, from PRB, extract the data after coding; To the decoding data after coding.
In the third aspect, the invention provides a kind of data transmitting equipment of the OFDMA of comprising system.This data transmitting equipment comprises: extraction unit, and according to code word bearing mode, after the coding of extraction corresponding length, data placement is on PRB; Transmitting element, YiPRBWei unit carries out data transmission.
In fourth aspect, the invention provides a kind of data receiver of the OFDMA of comprising system.This data receiver comprises: the receiving element that receives PRB data; According to code word bearing mode, from PRB, extract the extraction unit of the data after coding; Decoding unit to the decoding data after coding.
Aspect the 5th, the invention provides a kind of communication system of the OFDMA of comprising system, comprise data transmitting equipment described in the third aspect and the data receiver described in fourth aspect.
The present invention has defined the mode of multiple PRB carrying FEC code word.The mode of these PRB carryings FEC code word is configurable, the data transmission efficiency that has solved existing ofdm system is low, the problem that user experiences, and then raising data transmission efficiency and user satisfaction, further, when the data volume of certain connection is large, can select long code word, long code word can also bring the gain of FEC to promote, in data volume hour, can by PRB, carry the configuration item of a short code word, at short bag, during more and low delay requirement, still can select this mode to improve data transmission efficiency by configuration.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described.
Fig. 1 is according to the schematic diagram of the mode of the PRB carrying code word of the embodiment of the present invention 1;
Fig. 2 is the process chart of transmit leg based on PRB carrying code word;
Fig. 3 is the process chart of recipient based on PRB carrying code word;
Fig. 4 is according to the schematic diagram of the embodiment of the present invention 3;
Fig. 5 is the data transmitting equipment according to the embodiment of the present invention;
Fig. 6 is the data receiver according to the embodiment of the present invention.
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.Obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of data transmission method for uplink being applied in orthogonal frequency division multiple access system:
Comprise the following steps: that described data transmission method for uplink comprises: according to code word bearing mode, extract the data placement of corresponding length in a code word on Physical Resource Block; The described Physical Resource Block of take carries out data transmission as unit.
Described method also comprises: adopt the one or more identifier indication code word bearing modes in bearing mode identifier, code word size identifier, afterbody processing mode identifier.
Further, wherein according to code word bearing mode, after the coding of extraction corresponding length, the step of data placement on PRB specifically comprises: code word bearing mode refers to a code word of a plurality of PRB carrying; The second code word is placed on the PRB that is placed with the first code word.
Further, described method also comprises: select the PRB carrying that bit bearing capacity is identical same
The step of code word.
Further, described code word bearing mode can also, for by changing the size of described Physical Resource Block, carry a code word.
Correspondingly, the embodiment of the present invention also provides a kind of data receive method being applied in orthogonal frequency division multiple access system: receive Physical Resource Block; According to code word bearing mode, from described Physical Resource Block, extract the data after coding; To the decoding data after coding.
Further, from PRB, the step of the data after extraction coding comprises: described code word bearing mode is a code word of a plurality of Physical Resource Block carrying; Data from two code words of a PRB extraction.
Below by Fig. 1, the mode of the PRB carrying code word of the embodiment of the present invention 1 is described specifically.In OFDMA system, common 12 groups of adjacent sub-carriers are classified by unit time slot, form Physical Resource Block (PRB).PRB is the minimum bandwidth unit that base station dispatcher distributes.According to the present embodiment, can adopt a plurality of PRB cascades to carry single code word.Code word is for example FEC (Forward Error Correction, forward error correction) code word.
In the drawings, left side has illustrated PRB to carry the first kind of way of code word, wherein has 5 PRB, PRB1-PRB5.Code word 1 is carried on the front portion of PRB1, PRB2 and PRB3.Code word 2 is carried on rear portion, PRB4 and the PRB5 of PRB3.In first kind of way, support to have two code word cross-over connections in a PRB.
Right side has illustrated PRB to carry the second way of code word.Under the second way, there are 6 PRB, PRB1-PRB6.Code word 1 is carried on the front portion of PRB1, PRB2 and PRB3, and code word 2 is carried on PRB4, PRB5 and PRB6.According to the second way, do not support to exist in a PRB two code words.If code word 1 does not take PRB3, the afterbody of PRB3 is not used yet.
In OFDMA system, suppose PRB size=N subcarrier * M symbol.Suppose that each every carriers carry bit power k that need to support is 1～12 bit, the carrying bit power of each PRB is k * N * M.With N=12, M=15, k=12 is example, the maximum carrying bit power of a PRB is 2160 bits (i.e. 270 bytes).According to routine, a code word is limited with a PRB, and the length of code word is 270 bytes to the maximum.In the present embodiment, the length of code word can break through the restriction of PRB size, makes the user can be according to service needed, and flexible configuration is used long code word or short code word.When code word is elongated, the gain of physical layer also can significantly promote.When code word shortens, can improve delay character.
The code word bearing mode that transmit leg need to adopt the data on the PRB of current transmission is informed recipient.The mode of informing has two kinds: 1. transmit in advance; 2.PRB carries.
In the system of OFDMA, in general, recipient has been known the modulation bit number of this PRB in advance before receiving PRB data.Therefore, receiving-transmitting sides can determined the modulation system of this PRB and the code word bearing mode that may select through interaction protocol in advance.As in the system of point-to-multipoint, after being responsible for consulting with terminal by local side, by local side is unified, the code word bearing mode of the employing of each PRB of up-downlink direction is informed to terminal.
Also can in each PRB piece inside, take part resource and indicate in real time (as transmitted these parameters with parton carrier wave).In this case, local side only need to be informed the PRB numbering of terminal distribution, and the code word bearing mode that PRB adopts can be determined in real time and indicate to recipient according to service needed by transmit leg (local side or terminal).
To above-mentioned two kinds of transfer modes, each PRB is needed to increase some identifiers and indicate.Be below some examples of identifier, the present invention is not limited only to adopt these examples.
1. a bearing mode identifier.The mode of the carrying FEC code word of the current PRB of bearing mode identifier marking.This identifier can be a bit Flag.During Flag=0, represent that current PRB is independent code word; During Flag=1, represent that current PRB is cascade carrying long code word.
2. a code word type identifier.The whole length of code word that code word type identifier indicates current PRB to carry.This identifier can be FEC code word type indication FEC_Code_Type.Also referred to as code word size identifier.
It to Flag=0, is the situation of a code word of a PRB carrying, recipient also can not need to identify FEC_Code_Type, but extrapolates according to the modulation bit number of this PRB that (or other modes) have been known in advance the FEC code word type (length) that this PRB adopts.
During to Flag=1, current PRB is cascade carrying long code word, and recipient need to be known carried code word size according to FEC_Code_Type.
3. an afterbody processing mode identifier.This identifier indicates whether to support a PRB to have a plurality of code words.Receiving terminal according to this sign can know current code word extract after the remaining parton carrier wave of this PRB whether have the data of next code word.This identifier can adopt bit Cont_flag.
If the Cont_flag=1 of current PRB piece, and current PRB piece is the ending of a upper code word, while there is two code word cross-over connections, also need an extra FEC_Code_Type, recipient can be known the next code word size carrying according to FEC_Code_Type.
Therefore, in this embodiment, user of system support connects can use a plurality of code word bearing modes, and this user connects the PRB that is assigned with use, may include code word bearing mode that single PRB is corresponding and the code word bearing mode of a plurality of PRB carrying.
Fig. 2 is the process chart of transmit leg based on PRB carrying code word.
As shown in Figure 2, at step S22, by receiving-transmitting sides, consulted to determine carried of the bit number of PRB.
At step S24, according to practical business and flow, be identified for sending the code word bearing mode that each PRB of data adopts.During as low discharge, can adopt single PRB to carry independent code word mode.
At step S26, coding and data processing.Specifically, each PRB, according to the bearing mode (flag), code word type (FEC_Code_Type), afterbody processing mode (Cont_flag) information that adopt, is processed the data of needs carrying.According to code word bearing mode, payload user data is carried out to FEC coding, get the data bit of respective numbers and encode.To the data after coding, according to bearing mode and afterbody processing mode, do different disposal: single PRB is carried to independent code word mode, directly the data after coding are placed on PRB; Type to a plurality of PRB cascade carrying long code words, is placed on this PRB according to data after the coding of the carrying bit number extraction corresponding length of this PRB.
At step S28, YiPRBWei unit carries out data transmission.
The information such as the bearing mode (flag) that transmit leg adopts each PRB, code word type (FEC_Code_Type), afterbody processing mode (Cont_flag), can when setting up service connection, prior both sides determine by interacting message, also can indicate in real time by taking part resource in each PRB piece inside.
Fig. 3 is the process chart of recipient based on PRB carrying code word.
As shown in Figure 3, at step S32, by receiving-transmitting sides, consulted to determine carried of the bit number of PRB.
At step S34, receiving terminal receives PRB data.By detecting the specific resources of each PRB piece inside, obtain this PRB carrying code word mode.Or, also can prior both sides determine code word bearing mode by interacting message when setting up service connection.
At step S36, judge whether single PRB bearing mode.If so, turn to step S374.If not, turn to step S372.
At step S372, type to a plurality of PRB cascade carrying long code words, according to code word type (FEC_Code_Type), afterbody processing mode (Cont_flag) information, carry out data extraction, deliver to again next stage decoder module after collecting out a complete code.At step S374, single PRB is carried to independent code word mode, the data that directly extract on this PRB are given next stage decoder module.
At step S38, according to code word bearing mode, data are carried out to fec decoder, recover the initial data before coding.
Embodiment 2
In an alternative embodiment of the invention,, in embodiment 2, define possible PRB carrying code word mode.With embodiment 1, the multiple code word bearing mode of embodiment 2 definition, comprises code word bearing mode that single PRB is corresponding and the code word bearing mode of a plurality of PRB carrying.But, in embodiment 2, limit the PRB resource that each user connects distribution, can only use a kind of bearing mode, single PRB carries the mode of single code word or a code word of a plurality of PRB carrying.
Receiving-transmitting sides, when connecting, can be appointed used PRB bearing mode.In an example, CO (Central Office, local side) end determines PRB bearing mode.Such as, CO end can, according to this user's bandwidth demand, determine the code word bearing mode of selecting.When as large in bandwidth demand, can select long code word, a plurality of PRB carry the type of a code word, and the header overhead of LLC (Logical Link Control, logic link control) layer also can reduce like this, and the coding gain of physical layer also can improve.In another example, by user side, according to self-demand, determine PRB bearing mode.
Each is connected and needs following sign:
an identifier marking active user connects the mode of the carrying FEC code word of employing.Such as, this identifier adopts a bit flag.During Flag=0, represent that PRB is independent code word; During Flag=1, represent that PRB is cascade carrying long code word.
to the mode of a code word of a plurality of PRB carrying, receiving-transmitting sides needs: whether (1) identifier (as Cont_flag), be used to indicate and support a PRB to have a plurality of code words; Receiving terminal according to this sign can know current code word extract after the remaining parton carrier wave of this PRB whether have the data of next code word.(2) code word type indications (such as FEC_Code_Type), all PRB that distribute to this user's connection are used a unified code word bearing mode.
pRB is carried to the mode of independent code word, only need to indicate FEC_Code_Type.
Recipient is good PRB bearing mode according to a preconcerted arrangement, receives PRB data and also extracts code word.Single PRB is carried to the mode of single code word, each PRB data is exactly an independent code word.A plurality of PRB are carried to the mode of single code word, need to carry out data extraction according to code word type (FEC_Code_Type), afterbody processing mode (Cont_flag) information.
Embodiment 3
Fig. 4 is according to the schematic diagram of the embodiment of the present invention 3.In embodiment 3, in system, definition can be supported the mode of a PRB code word of carrying or a code word of a plurality of PRB carrying simultaneously.CO end can be selected carrying code word mode according to user's bandwidth demand.The user large to bandwidth demand amount selects long code word bearing mode as far as possible.When distributing PRB resource, certain is needed to the user of long code word, MAC, when Resources allocation, can for example, combine to carry single code word the PRB of n bit bearing capacity identical (, SNR approaches).Such as, for this user's SNR, PRB is sorted, the PRB of n identical SNR grade is combined into a PRB and carries long code word.
As shown in Figure 4, to 12 PRB of user assignment, PRB1-12.All PRB are sorted by the size of SNR, and SNR approaches or equal PRB can bundle to carry long code word.
The code word size of the long code word that a plurality of PRB combinations are carried equals A * PRB and can carry bit number.A represents the binding PRB number that system need to be supported.Fix number=M subcarrier * N symbol of running time-frequency resource lattice of each PRB, suppose the bit number B=1-12 of each subcarrier carrying, code length=A * M * N * B, the span that wherein A supports is determined by system, as A=1,2,3,4 ..., B is modulation bit number.
As seen from the above, the span of A has determined that system needs the code word number of types of Definition of design.The system of considering is supported the restricted number of code word type, and the number of A should be less.
Embodiment 4
In the embodiment of the present invention 4, in system, the mode of a code word of a PRB carrying is supported in definition, and by sub-carrier number or symbolic number in configuration PRB, the size that changes PRB realizes elongated PRB, thereby realizes single PRB carrying long code word.
As mentioned before, number=M subcarrier * N symbol of running time-frequency resource lattice of each PRB.By expansion sub-carrier number or symbolic number, obtain following formula:
The running time-frequency resource lattice number of PRB=(A * M) individual subcarrier * (B * N) individual symbol,
Wherein, A be sub-carrier number after expansion with respect to the multiple of former subcarrier, B is that symbolic number after expansion is with respect to the multiple of former symbolic number.A, B are configurable.A considers that system supports the restricted number of pattern, A, number should be less.
CO end can be according to user's bandwidth demand, and the user large to bandwidth demand amount selects long code word bearing mode as far as possible.When distributing PRB resource, the value of A, B can configure together in whole system, to the value of all user A, is identical; The value of A, B also can arrange separately for certain user, as to needing individually the user of long code word, can select to arrange larger A, B value.
Fig. 5 is the data transmitting equipment according to the embodiment of the present invention.This data transmitting equipment is applied in OFDMA system.This data transmitting equipment comprises:
Extraction unit 52, for according to code word bearing mode, extract the coding of corresponding length after data placement on Physical Resource Block PRB;
Transmitting element 54, carries out data transmission for YiPRBWei unit.
Preferably, described extraction unit adopts the one or more code word bearing modes of indicating in bearing mode identifier, code word size identifier, afterbody processing mode identifier.
Preferably, extraction unit is placed on the data of a code word respectively on a plurality of PRB.
Preferably, extraction unit comprises the second code word is placed into the unit on the PRB that is placed with the first code word.
Preferably, described data transmitting equipment comprises selected cell, for selecting the PRB that bit bearing capacity is identical to carry same code word.
Preferably, data transmitting equipment comprises change unit, for by changing the size of described Physical Resource Block, carries a code word.
The variety of way that concrete data transmitting equipment is encoded to data refers to the specific descriptions of above-described embodiment 1-3.
Fig. 6 is the data receiver according to the embodiment of the present invention.This receiving equipment is applied in OFDMA system.This receiving equipment comprises: receiving element 62, for receiving PRB data; Extraction unit 64 for according to code word bearing mode, extracts the data after coding from PRB; Decoding unit 66, for the decoding data to after coding.
Correspondingly, when wherein code word bearing mode is a code word of a plurality of PRB carrying, described receiving equipment is from the data of two code words of a PRB extraction.
Data after the received code that concrete data receiver is carried out, and the process of carrying out corresponding decoding refers to the specific descriptions of above-described embodiment 1-3.
The present invention has defined the mode of multiple PRB carrying FEC code word.The mode of these PRB carryings FEC code word is configurable, and brings following significant benefit.When the data volume of certain connection is large, can select long code word, i.e. a long code word of a plurality of PRB carrying, long code word brings the gain of FEC to promote.As adopt a long code word carrying MPDU (MAC Payload Data Unit, MAC load data unit), because LLC header overhead byte is constant, so MAC efficiency also gets a promotion.The configuration item that retains a short code word of original PRB carrying, during more and low delay requirement, still can select this mode by configuration at short bag.
The embodiment of the present invention also provides and has comprised a kind of communication system that comprises orthogonal frequency division multiple access system, comprise data transmitting equipment and data receiver as described in Example 4, wherein, described data equipment specifically comprises: extraction unit 52, be used for according to code word bearing mode, after the coding of extraction corresponding length, data placement is on Physical Resource Block PRB; Transmitting element 54, carries out data transmission for YiPRBWei unit.Described receiving equipment specifically comprises:: receiving element 62, for receiving PRB data; Extraction unit 64 for according to code word bearing mode, extracts the data after coding from PRB; Decoding unit 66, for the decoding data to after coding.
The present invention has defined the mode of multiple PRB carrying FEC code word.The mode of these PRB carryings FEC code word is configurable, the data transmission efficiency that has solved existing ofdm system is low, the problem that user experiences, and then raising data transmission efficiency and user satisfaction, further, when the data volume of certain connection is large, can select long code word, long code word can also bring the gain of FEC to promote, in data volume hour, can by PRB, carry the configuration item of a short code word, at short bag, during more and low delay requirement, still can select this mode to improve data transmission efficiency by configuration.
Although each embodiment of the present invention is described in conjunction with FEC code word above, the present invention is equally applicable to the carrying of other code word obviously.In addition, PRB not only means the Resource Block of the OFDMA system under LTE system, also contains the time-frequency piece of the OFDMA system under other system.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection range being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. the data transmission method for uplink being applied in orthogonal frequency division multiple access system, it is characterized in that, described data transmission method for uplink comprises: according to a Physical Resource Block, have the code word bearing mode of two code word cross-over connections, extract the data placement of corresponding length in a code word on Physical Resource Block;
On described Physical Resource Block, add bearing mode identifier, code word size identifier and afterbody processing mode identifier to indicate described code word bearing mode;
The described Physical Resource Block of take carries out data transmission as unit.
2. the method for claim 1, is characterized in that, in code word of described extraction, the data placement of corresponding length specifically comprises on Resource Block: the second code word is placed on the Physical Resource Block that is placed with the first code word.
3. the method for claim 1, is characterized in that, described method also comprises: select the identical Physical Resource Block of bit bearing capacity to carry same code word.
4. the method for claim 1, is characterized in that, described code word bearing mode, for by changing the size of described Physical Resource Block, carries a code word.
5. be applied in the data receive method in orthogonal frequency division multiple access system, it is characterized in that, described method of reseptance comprises:
Receive Physical Resource Block;
According to bearing mode identifier, determine PRB code word bearing mode;
When PRB code word bearing mode is two code word cross-over connections of a PRB existence, according to code word size identifier and afterbody processing mode identifier, from described Physical Resource Block, extract the data after coding;
To the decoding data after coding.
6. method as claimed in claim 5, is characterized in that, the described data of extracting from Physical Resource Block after coding specifically comprise: from a Physical Resource Block, extract the data of two code words.
7. be applied in the data transmitting equipment in orthogonal frequency division multiple access system, it is characterized in that, described data transmitting equipment comprises:
Extraction unit, according to a Physical Resource Block, there is the code word bearing mode of two code word cross-over connections, after the coding of extraction corresponding length, data placement, at Physical Resource Block, adopts bearing mode identifier, code word size identifier and afterbody processing mode identifier to indicate described code word bearing mode;
Transmitting element, the described Physical Resource Block of take carries out data transmission as unit.
8. data transmitting equipment as claimed in claim 7, is characterized in that, described extraction unit is specifically for being placed into the second code word on the Physical Resource Block that is placed with the first code word.
9. data transmitting equipment as claimed in claim 7, is characterized in that, described data transmitting equipment also comprises selected cell, for selecting the PRB that bit bearing capacity is identical to carry same code word.
10. data transmitting equipment as claimed in claim 7, is characterized in that, wherein data transmitting equipment also comprises change unit, for by changing the size of described Physical Resource Block, carries a code word.
11. 1 kinds of data receivers that are applied in orthogonal frequency division multiple access system, is characterized in that, described data receiver comprises:
Receiving element, for receiving Physical Resource Block;
Extraction unit, for according to bearing mode identifier, determine PRB code word bearing mode, when PRB code word bearing mode is two code word cross-over connections of a PRB existence, according to code word size identifier and afterbody processing mode identifier, from described Physical Resource Block, extract the data after coding;
Decoding unit, for the decoding data to after coding.
12. data receivers as claimed in claim 11, is characterized in that, described extraction unit specifically for, the described data of extracting from Physical Resource Block after coding specifically comprise: from a Physical Resource Block, extract the data of two code words.
13. 1 kinds of communication systems that comprise orthogonal frequency division multiple access system, is characterized in that, described communication system comprises: the data receiver that one of the data transmitting equipment that one of claim 7-10 is described and claim 11-12 are described.
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| PCT/CN2011/082129 WO2012167548A1 (en) | 2011-11-14 | 2011-11-14 | Method, apparatus and system for transmitting and receiving data in orthogonal frequency division multiple access system |
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| KR101301368B1 (en) * | 2007-02-14 | 2013-08-29 | 삼성전자주식회사 | Method and arraratus of transmitting and receiving for forward shared control channel in mimo system |
| KR101505193B1 (en) * | 2007-06-18 | 2015-03-23 | 삼성전자주식회사 | Symbol Transmission Method and Apparatus for used in Orthogonal Frequency Division Multiplex Access Systems |
| CN101374017B (en) * | 2007-08-21 | 2012-12-19 | 中兴通讯股份有限公司 | Method for distributing physical resource blocks based on OFDM system |
| CN101409583B (en) * | 2007-10-11 | 2013-02-13 | 电信科学技术研究院 | Method and device for transmitting signal |
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| CN101282122A (en) * | 2007-04-03 | 2008-10-08 | 中兴通讯股份有限公司 | Method for partitioning encoding block |
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