CN102301805A - Method And Apparatus For Transmitting Data - Google Patents

Abstract

A method and apparatus for transmitting data are provided in the embodiments of the present invention, wherein the method includes: a first apparatus determines the position of the start symbol of the service data, which is sent to a second apparatus in a data subframe of the first apparatus; the position of the start symbol is determined according to the number of symbols occupied by control data in the data subframe of the first apparatus and the number of symbols occupied by control data in the data subframe of the second apparatus; the first apparatus sets the service data in the position of the start symbol, and sends the service data to the second apparatus. The present invention addresses partial service data parsing failure and low data transmission efficiency, which are caused by the inability of the relaying apparatus and base station to obtain the position of the start symbol of service data in the data subframes each sends to the other.

Description

Method And Apparatus For Transmitting Data

Data transmission method and engineering device technique field

The present invention relates to the communication technology, more particularly to a kind of data transmission method and device.Background technology

Relaying technique is introduced in senior long term evolution (Long Term Evolut ion Advanced, abbreviation LTE Advanced) standard（Relaying technology), it is the wireless cellular system structural representation for introducing relaying technique in the prior art, within the system, base station as shown in figure 15（ENB) 1 data sent are sent to the user equipment that relay 2 is serviced by relay 2（User Equipment, abbreviation UE) 3, the data that the UE (R-UE) 3 that relay is serviced is sent are also required to be sent to eNBl by relay 2.In Figure 15, each R-UE3 provides service by relay 2, and each UE4 directly provides service by eNB.

For the system shown in Figure 15, within the same time, work as relay return link（Refer to the Radio Link between eNBl and relay 2）With relaying access link（Refer to the Radio Link between relay 2 and R-UE3）When being communicated using identical frequency band or nearby frequency bands, because relay 2 constantly receives data from eNBl, and constantly send data to R-UE3, so relay is while the data from eNBl are received, it is possible to receive the data itself sent, the reception for the eNBl data sent can be so disturbed, that is, brings winding self-interference（Self-backhaul interference) problem, so as to influence the smooth transmission of data in wireless cellular system.There is also similar loopback self-interference problem by eNBl, eNBl constantly receives data from relay 2, and constantly send data to relay 2 or UE4, so eNBl is while the data from relay 2 are received, it is possible to receive the data itself sent, can so disturbs the reception of the data sent out for relay 2.

In order to avoid loopback self-interference, relay or eNB data burst are arranged in the prior art

MBSFN sub-frame, so relay can just have the time from the State Transferrings of data is sent to R-UE to the state for receiving the data that eNB is sent, and eNB can have the state of data sent from the State Transferring that data are sent to UE to reception relay device the time.

Inventor has found during the present invention is realized, when eNB sends data to relay, relay can not know the position of the primary sign of business datum in the data burst that eNB is sent, and business datum refers to that discord eNB is sent to the control data (control data) of relay in same resource block herein（Resource block, abbreviation RB) business datum (traff ic data), eNB can not also know that relay can be parsed（Demodulate, decode etc.）The original position of business datum in data burst, if the original position of business datum can parse the original position of business datum in eNB data burst earlier than relay in the data burst that eNB is sent, then relay is possible to that whole business datums of eNB transmissions can not be parsed, and causes a part of business datum to be missed；What if eNB was sent The original position of business datum, which is later than relay, in data burst can parse the original position of business datum in eNB data burst, then relay is possible to receive some itself unwanted hashes, that is partial symbols are used to carry hash in eNB data burst, can cause data transmission efficiency not.The content of the invention

The embodiment of the present invention is directed to problems of the prior art, a kind of data transmission method and device are provided, be can solve the problem that due to the problem of relay and eNB can not know mutually the primary sign position of business datum in the data burst sent each other and bring partial service data can not be resolved or data transmission efficiency is not high.

The embodiments of the invention provide a kind of data transmission method, including：

First device determines the position of primary sign of the business datum sent to second device in the data burst of the first device；The position of the primary sign, which takes control data in the data burst of symbol numbers and the second device according to control data in the data burst of the first device and takes symbol numbers, to be determined；

The business datum is arranged on the position of the primary sign by the first device, and sends the business datum to the second device.

The embodiment of the present invention additionally provides a kind of data transmission method, including：

Second device receives the business datum that first device is sent；

The second device determines the position of primary sign of the business datum of the first device transmission in the data burst of the first device；

The second device parses the business datum that the first device is sent since the position of the primary sign.

The embodiment of the present invention additionally provides a kind of data transmission device, including：

First determining module, the position for the primary sign of the business datum that determines to send to second device in the data burst of the data transmission device；The position of the primary sign, which takes control data in the data burst of symbol numbers and the second device according to control data in the data burst of the data transmission device and takes symbol numbers, to be determined；

First sending module, for the business datum to be arranged on to the position of the primary sign, and sends the business datum to the second device.

The embodiment of the present invention additionally provides a kind of data transmission device, including：

Second receiving module, the business datum for receiving first device transmission；

Second determining module, the position for determining primary sign of the business datum of the first device transmission in the data burst of the first device；

Solved first parsing module, the position for determining primary sign since second determining module Analyse the business datum that second receiving module is received.

In the embodiment of the present invention, first device can take symbol numbers according to control data in the data burst of control data occupancy symbol numbers and second device in the data burst of itself and determine to be sent to the position of the primary sign of the business datum of second device, second device can also determine the position of the primary sign for the business datum that first device is sent, so, it can just solve due to the problem of the partial service data that first device and second device can not know mutually the primary sign position of business datum in the data burst sent each other and bring can not be resolved or data transmission efficiency is not high, first device can be eNB, second device can be relay；Or, first device can be relay, and second device can be eNB.

Below by drawings and examples, technical scheme is described in further detail.Brief description of the drawings

Fig. 1 show the flow chart of data transmission method embodiment one of the present invention；

Fig. 2 show the flow chart of data transmission method embodiment two of the present invention；

Fig. 3 show the flow chart of data transmission method embodiment three of the present invention；

Fig. 4 show data transmission method example IV flow chart of the present invention；

Fig. 5 show a kind of structural representation of the relay being related in the embodiment of the present invention and eNB data burst；

It is the position view of the first announcement information for being related in the normal down data subframes of eNB sides in the embodiment of the present invention described in Fig. 6；

Fig. 7 show another structural representation of the relay being related in the embodiment of the present invention and eNB data burst；

Fig. 8 show the flow chart of data transmission method embodiment five of the present invention；

Fig. 9 show the flow chart of data transmission method embodiment six of the present invention；

Figure 10 show another structural representation of the relay being related in the embodiment of the present invention and eNB data burst；

Figure 11 show the structural representation of data transmission device embodiment one of the present invention；

Figure 12 show the structural representation of data transmission device embodiment two of the present invention；

Fig. 13 show the structural representation of data transmission device embodiment three of the present invention；

Figure 14 show data transmission device example IV structural representation of the present invention；

Figure 15 show the wireless cellular system structural representation for introducing relaying technique in the prior art.Embodiment

It is the flow chart of data transmission method embodiment one of the present invention as shown in Figure 1, including：

Step 1 01, first device determine the number of the business datum that is sent to second device in first device According to the position of the primary sign in subframe；The position of primary sign, which takes control data in the data burst of symbol numbers and second device according to control data in the data burst of first device and takes symbol numbers, to be determined.

Business datum is arranged on the position of primary sign by step 1 02, first device, and sends business datum to second device.

The flow chart of data transmission method embodiment two of the present invention is illustrated in figure 2, including：

Step 201, second device receive the business datum that first device is sent.

Step 202, second device determine the position of primary sign of the business datum of first device transmission in the data burst of first device.

Step 203, second device parse the business datum of first device transmission since the position of primary sign.

In embodiment one and embodiment two, first device can be eNB, and second device can be relay；Or, first device can be relay, and second device can be eNB.

If in embodiment one, first device is eNB, second device is relay, then eNB can also send the first announcement information to relay, and the first announcement information is used to show that eNB is sent to the position of primary sign of the business datum of relay in eNB data burst.Relay is after the first announcement information is received, it is possible to it is determined that the position for the business datum that parsing eNB is sent.It can thus solve due to the problem of the partial service data that eNB and relay can not know mutually the position of the primary sign of business datum in the data burst sent each other and bring can not be resolved or data transmission efficiency is not high.

ENB can not also send the first announcement information, relay is after the business datum of eNB transmissions is received, the position of the primary sign for the business datum that eNB is sent can be determined to parse according to the symbol numbers that control data takes in the symbol numbers of control data occupancy in eNB data burst and the data burst of relay itself, the position of the primary sign for the business datum that the parsing eNB that relay is determined is sent, position with eNB primary signs of the business datum sent to relay in eNB data burst determined is consistent, it can also equally solve due to the problem of the partial service data that eNB and relay can not know mutually the position of the primary sign of business datum in the data burst sent each other and bring can not be resolved or data transmission efficiency is not high.

Send business datum to eNB both of these cases to introduce the implementation of the present invention from eNB transmission business datums to relay and relay separately below.

I, eNB send business datum to relay

The flow chart of data transmission method embodiment three of the present invention is illustrated in figure 3, including：

Step 301, eNB are according to the cyclic prefix used in the data burst of itself（Cyc l i c Pref ix, abbreviation CP) length and relay the first control data take symbol numbers set the first parameter value, wherein, the first control data take symbol numbers be relay multicast SFN Control data takes symbol numbers in (Mu l t i-media Broadcas t over a S ing le Frequency Network, abbreviation MBSFN) data burst.

Step 302, eNB take symbol numbers, the second control data of itself according to the first control data and take the value of symbol numbers and the first set parameter, it is determined that the position of primary sign of the business datum sent to relay in eNB data burst, wherein, the second control data takes symbol numbers and takes symbol numbers for control data in eNB data burst.

Business datum is arranged on identified primary sign position by step 303, eNB, and sends business datum to relay.

Before step 301, it can also include：When relay is initially accessed eNB, the first control data that eNB reception relay devices are sent takes symbol numbers.Relay sends the first control data and takes the step of symbol numbers are to eNB, can be carried out when relay is initially accessed eNB.In follow-up data transmission procedure, then relay takes symbol numbers to eNB without sending the first control data every time.If in follow-up data transmission procedure, the first control data of relay takes symbol numbers and changed, then relay needs to send new the first control data occupancy symbol numbers to eNB.

On the basis of embodiment three, eNB can also send the first announcement information to relay, and first announcement information is used to show that eNB is sent to the position of primary sign of the business datum of relay in eNB data burst.

Data transmission method example IV flow chart of the present invention is illustrated in figure 4, including：

Step 401, relay receive the business datum that eNB is sent, and the data burst of relay is MBSFN data bursts.

Step 402, relay determine the position of primary sign of the business datum of eNB transmissions in eNB data burst.

Step 403, relay parse the business datum of eNB transmissions since the position of identified primary sign.

If in embodiment three, eNB does not send the first announcement information to relay, then the length that example IV also takes the CP used in symbol numbers and eNB data burst including relay according to the first control data of itself sets the value of the first parameter.

In step 402, relay determines that the position of primary sign of the business datum of eNB transmissions in eNB data burst is specially：Relay takes the value that symbol numbers, eNB the second control data take symbol numbers information and the first set parameter according to the first control data of itself, determines the position of primary sign of the business datum of eNB transmissions in eNB data burst.

In example IV, relay can be when being initially accessed eNB, the second control data for obtaining eNB takes the CP used in symbol numbers information and eNB data burst length, wherein, the second control data takes the symbol that symbol numbers information takes for control data in eNB data burst The scope for the symbol numbers that control data takes in number or eNB data burst.Because in some cases, relay can not accurately know that the second control data takes the occurrence of symbol numbers in eNB data burst, and the second control data in eNB data burst can only be known and take the span of symbol numbers.During subsequent relay device receives the business datum that eNB is sent, the CP used in symbol numbers information and eNB-side data subframe length is just taken without obtaining eNB the second control data every time.

If in embodiment three, eNB sends the first announcement information to relay, then step 4 02 is specially that relay receives the first announcement information that eNB is sent in embodiment three, parses the first announcement information and according to it is determined that the position for primary sign of the business datum in eNB data burst that eNB is sent.

The implementation of the embodiment of the present invention is described in detail below.

In order to overcome loopback self-interference, when eNB sends downlink data to relay, the data burst of relay can be configured to MBSFN sub-frame, on corresponding position, eNB data burst is configured to normal data subframe (i.e. non-MBSFN sub-frame), or eNB data burst is also arranged to MBSFN sub-frame.By the way that the data burst of relay is configured into MBSFN sub-frame so that relay has the time from the State Transferring of data is sent to R-UE to the state for the data for receiving eNB transmissions.

First, the data burst of relay is configured to MBSFN sub-frame, and eNB data burst is configured to the situation of normal sub-frames

It is illustrated in figure 5 a kind of structural representation of the relay being related in the embodiment of the present invention and eNB data burst.From fig. 5, it is seen that within the time of the first control data occupancy of relay MBSFN data bursts, relay sends the first control data and gives the R-UE, by a protection interval（Guard Per i od, abbreviation GP) time after, relay transfer receive eNB send business datum.After the business datum of eNB transmissions has been received, then by GP time, the MBSFN data bursts terminate.By the first control data in the MBSFN sub-frame of relay and be received from eNB transmission business datum between add a GP, and a GP is added at the ending of MBSFN data bursts, relay is completed from State Transferring of first control data to UE is sent to the state for receiving the business datum that eNB is sent, and from the State Transferring of the business datum that eNB is sent is received to sending state of first controlling symbols to R-UE.During actual hardware is realized, the conversion time between transmission state is received, i.e., above-mentioned GP probably needs at least 20 microseconds（ μ_δ) .According to the actual conditions of wireless data frame, the length of the GP can be different.Another sunset is foretold, for the MBSFN data bursts of relay, the first control data and is received from the GP added between the business datum of eNB transmissions, and the GP added at the ending of MBSFN data bursts, and length can be different.

In Fig. 5, in eNB data burst, within the time that the second control data takes, eNB sends the second control data to UE, and after eNB has sent the second control data, eNB sends data to relay, and/or sends data to UE. (in (Orthogonal Frequency Division Multiplexing, abbreviation OFDM) symbol, normal CP length is about 4.7 microseconds to one OFDM, and extension CP length is about 16.7 microseconds.In the cell of eNB services or the cell of relay service in OFDM symbol CP length by eNB or each self-configuring of relay, select normal CP still to extend CP mainly to be determined by radius of society size, in the big data burst of radius of society normal CP is configured in configuration extension CP, the small data burst of radius of society.Due to radius of society all very littles that relay is serviced, so the CP configured in the data burst of relay uses normal CP.ENB data burst can be using normal CP or extension CP.

The normal control data of down data subframes second takes symbol（Symbol is to refer to OFDM symbols in the embodiment of the present invention）The physical mixed automatic re-transmission indicating channel of number and eNB（Physical HARQ Indication Channel, abbreviation PHICH) take symbol numbers it is relevant.The state for the symbol numbers that PHICH takes is divided into two kinds：Normally（Normal) state or extension（Extended) state, the state for the symbol numbers that PHICH takes is carried in the system broadcast information that eNB is sent.In the case of non-small bandwidth, resource i.e. on frequency domain is less than or equal to 10 Physical Resource Block (Physical Resource Block, abbreviation PRB) in the case of, for normal down data subframes, normal condition represents that PHICH takes 1 symbol, and extended mode represents that PHICH takes 3 symbols；For MBSFN data bursts, normal condition represents that PHICH takes 1 symbol, and extended mode represents that PHICH takes 2 symbols.When the eNB PHICH symbol numbers taken are 1, the symbol numbers that second control data of normal down data subframes takes are 1 or 2 or 3, second control data of each down data subframes takes symbol numbers and determined by current scheduling algorithm, by Physical Control Format Indicator Channel（Physical control format indicator channel, abbreviation PCFICH) indicate.When the eNB PHICH symbol numbers taken are 3, it is 3 that the second control data of each normal down data subframes, which takes symbol numbers, is equally indicated by PCFICH.

For MBSFN data bursts, control data takes preceding 1 or 2 symbol, and the symbol numbers that control data takes are equally relevant with the state that PHCIH takes symbol numbers.When being normal for PHICH occupancy symbol numbers states, the symbol numbers that the control data of MBSFN data bursts takes are 1 or 2, are indicated by PCFICH；When taking symbol numbers for PHICH for extension, the symbol numbers that the control data of MBSFN data bursts takes are 2, are indicated by PCFICH.When PHICH occupancy symbol numbers states are to be used for relaying technique for normal and MBSFN data bursts, the symbol numbers that the control data in MBSFN data bursts takes are specifically 1 or 2 needs by high level configuration.

In order that eNB can determine to need business datum addition in which position of normal descending sub frame when sending normal down data subframes, relay is when the first control data for being initially accessed eNB or relay have changed in the MBSFN data bursts of itself takes symbol numbers, it is necessary to which the first control data takes symbol numbers and is sent to eNB in MBSFN data bursts by relay.

Specifically, relay can be explicit（Explicitly it is 1 or 2 to indicate that the first control data of the MBSFN data bursts that it is configured takes symbol numbers with 1 bit data);Or, in Can be implicit after device（Imp l i c i t ly) by the first control data take symbol numbers be sent to included in it in eNB other information.

When relay is initially accessed eNB, relay can obtain the length for the CP that eNB the second control data occupancy symbol numbers information and eNB data burst are used.When eNB uses normal data subframe, the state for the symbol numbers that PHICH takes can interpolate that the span for the symbol numbers that the second control data takes in the system broadcast information that relay is sent according to eNB.

In step 302, eNB determines that the position of primary sign of the business datum sent to relay in eNB data burst can be according to formula（1) carry out.

K=max (Kl, K2) (1)

Formula（1) in, K is primary sign position of the business datum sent to relay of eNB determinations in eNB data burst, that is eNB sends business datum to relay from k-th sign-on, K1 represents that relay can parse the earliest character position of the business datum of eNB transmissions, K1=X1+K_GP+1, XI takes symbol numbers for control data in the MBSFN data bursts of relay, i.e. the first control data takes symbol numbers；K2 represents that eNB can send earliest character position of the business datum to relay, obvious K2=X2+1, Χ 2 is that the control data in eNB data burst takes symbol numbers, that is the second control data takes symbol numbers, max is that to take larger value function, i.e. K value should be higher value in K1 or K2.Formula（1) K_GP represents the first parameter, it is necessary to explanation, the first parameter is the corrected parameter used in the embodiment of the present invention, is in order to according to formula（1) position of correct business datum primary sign can be accessed when eNB data burst is using normal CP and extension CP, it is relevant that K_P value takes symbol numbers with CP length and the first control data of relay that eNB data burst is used.

In detail below how K_GP is determined under interpretation different situations.

When using normal CP in eNB data burst, because the original position and final position of the typically normal CP used in the MBSFN data bursts of relay, relay and all symbols in eNB corresponding data subframes are almost alignd（A l igned), so relay is after the first control data has been sent, such as the first control data takes m symbol（M=l or 2), eNB sides have also sent m symbol simultaneously, and start to send the m+1 symbol, relay can not possibly receive the m+1 symbol of eNB sides transmission at once, because not having the conversion time of 20 microseconds between m and m+1 symbol.So, relay can only be from the middle part of the m+1 symbol（After about 20 microseconds）Receive, but because symbol must be received completely（Part at least in addition to CP is required for being completely received）Business datum could be correctly parsed, so relay can only actually be parsed from eNB the m+2 sign-on earliest, in this case, K_GP=m+2-m-l=l.That is, when eNB sends business datum to relay, if eNB data burst uses normal CP, no matter the symbol numbers that the first control data of relay takes be 1 or 2, K_GP value be 1.

When eNB data burst uses extension CP, because the MBSFN data bursts of relay Normal CP is generally used, so an eNB symbol is about 11 microseconds than a symbol of relay, so the original position that the symbol in relay and eNB corresponding data subframes only has first symbol is alignment.If the first control data takes 1 symbol in relay MBSFN data bursts, after relay has sent first control data of this one symbol of occupancy, it there is also about the primary sign position that 11 microseconds just arrive second symbol of eNB, need to be completely received due to requiring nothing more than the part at least in addition to CP again, so add the CP length of about 16. 7 microseconds, original position of its first control data into the symbol of eNB sides second in addition to CP, which has been sent, from relay there are about the microseconds of 11+16. 7=27, the conversion between relay reception state and transmission state can be met completely, so, when the first control data takes a symbol in the MBSFN data bursts of relay, relay can parse the data that eNB is sent from second sign-on earliest, so K_GP=2-1-1=0;When the first control data takes 2 symbols in the MBSFN sub-frame of relay, understand that relay can parse the data that eNB is sent from the 3rd sign-on earliest, so K_GP=3-2-l=0 using as above similar analysis.That is, when eNB sends business datum to relay, if eNB data burst is using extension CP, no matter the symbol numbers that the first control data of relay takes be 1 or 2, K_GP optimal value be 0.

In step 402, relay can also be according to formula（1) primary sign position of the business datum in eNB data burst that eNB is sent is determined.

First control data occupancy symbol numbers, the CP length that the second control data takes symbol numbers with eNB data burst is used are different, and K value is also just different.

(1) when the symbol numbers that PHI CH take in eNB normal down data subframes use normal CP for 3 and eNB data burst, the symbol numbers that eNB the second control data takes are 3, if the first control data occupancy symbol numbers that relay is sent to eNB are 1, then K_GP=1, eNB can determine Kl=l+1+1=3, K2=3+l=4, so Κ=4.

If the first control data occupancy symbol numbers that relay is sent to eNB are that 2, K_GP=1, eNB can determine that K remains as 4.So, eNB sends business datum to all relays from the 4th sign-on.

Relay is in access eNB for the first time, know that the symbol numbers that PH ICH take in eNB normal down data subframes are 3, and know that eNB data burst employs normal CP, so relay can determine that the symbol numbers that the second control data takes in normal descending sub frame are 3.If it is 1, " _ 0 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself=1, relay is according to formula（1) K=4 can be determined.If it is 2, " _ 0 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself=1, relay can determine that K remains as 4.So, the business datum that all relays are sent from the 4th sign-on parsing eNB.

In this embodiment, the CP length that the data burst that eNB takes symbol numbers, the second control data occupancy symbol numbers and eNB according to the first control data is used determines the primary sign of business datum Position, the position of the primary sign for the parsing business datum that the CP length that the data burst for taking symbol numbers, the second control data occupancy symbol numbers and eNB according to the first control data with relay is used is determined is consistent, eNB and relay can be so avoided to occur due to the situation that the inconsistent partial service data caused in the position of the business datum primary sign of determination can not be received, and relay can be avoided to receive unwanted data, it is possible to increase the efficiency of data transfer.

(2) when the symbol numbers that PHICH takes in eNB normal down data subframes use extension CP for 3 and eNB data burst, the symbol numbers that eNB the second control data takes are 3, then K_GP=0, other processes and above-mentioned（1) part is similar, and no longer Redundant is stated.

(3) when in eNB normal down data subframes PHICH take symbol numbers be 1, and eNB data burst use normal CP when：

The symbol numbers that the second control data takes in Al, normal down data subframes can be 1 or 2 or 3, if the first control data occupancy symbol numbers that relay is sent to eNB are 2, " _ 0=1, eNB can determine Kl=2+1+1=4, K2=l+1=2, or K2=2+l=3, or K2=3+l=4, so Κ=4.So, eNB sends business datum to relay from the 4th sign-on.

Relay is in access eNB for the first time, know that the symbol numbers that PHICH takes in eNB normal down data subframes are 1, and know that eNB data burst uses normal CP, so relay can determine that the symbol numbers that the second control data takes in eNB data burst can be 1 or 2 or 3, if it is 2 that the first control data of relay, which takes symbol numbers, then K_GP=1, relay can determine Kl=2+1+1=4, K2=l+1=2, or K2=2+l=3, or K2=3+l=4, so Κ=4.Relay parses business datum from the 4th sign-on.

The symbol numbers that the second control data takes in Bl, eNB normal down data subframes can be 1 or 2 or 3, if the first control data occupancy symbol numbers that relay is sent to eNB are 1, then K_GP=1, eNB can determine Kl=l+1+1=3, K2=l+1=2, or K2=2+l=3, or K2=3+l=4, so Κ=4 or 3.

In this case, for eNB, the symbol numbers that the second control data takes in normal down data subframes are it was determined that so eNB can determine K occurrence.But for relay, the specific number for the symbol that second control data takes in normal down data subframes due to eNB can not be known, and the symbol numbers that can only be taken according to PHICH are 1 or 2 or 3 come the symbol numbers scope for determining the second control data occupancy, so relay can not determine that K value is 3 or 4.So, eNB sends business datum to relay from the 3rd or 4 sign-on, and sends the first announcement information to relay, notifies relay from the 3rd or 4 sign-on parsing business datum.First announcement information can take 1 bit.First announcement information of this 1 bit can be sent to relay by single physical channel.The physical channel is defined on the 4th symbol, and either eNB is in the last symbol of the control channel of relay or some or certain several symbols for being defined on after the 4th symbol are reserved on running time-frequency resource.It is sent to the control channel of relay and is sent to the Traffic Channel of relay Frequency division manner can be used, it is the position view of the first announcement information for being related in the normal down data subframes of eNB sides in the embodiment of the present invention as described in Figure 6, control channel is arranged on symmetrical 2 PRB in the both sides of whole bandwidth in Fig. 6, control channel can also be arranged on symmetrical 1 PRB in the both sides of whole bandwidth, in Fig. 6 so that control channel is arranged on symmetrical 2 PRB in the both sides of whole bandwidth as an example；Indicate that 1 the first announcement information of bit of the primary sign position of business datum is arranged on the PRB on most marginal position, when the eNB control channels being sent in the data burst of relay and eNB are sent to the Traffic Channel frequency division of the relay, it can also indicate that control channel occupies a P RB of the whole bandwidth original position of the data burst and a PRB of end position with the second announcement information of another bit, or the control channel occupies 2 PRB of the whole bandwidth original position of the data burst and 2 PRB of end position, second announcement information can together be set on a single physical channel with the first announcement information.In Fig. 6, eNB can use code division mode between being sent to the second control data of different relays.Or, the first announcement information can also add and relay is sent in some control channel, for example, carry and be sent to relay in R-PDCCHs of the eNB to relaying, R-PDDCH refers to the Physical Downlink Control Channel that base station is sent to relaying herein（Phys ica l Downl ink Control CHannl, abbreviation PDCCH), UE PDCCH is sent to similar to base station, the control channel of relay is sent to always from the 4th sign-on.

Relay is after the first announcement information is received, it is possible to which it is from that sign-on issuing service data, so as to from correct primary sign location resolution business datum to determine eNB.But when the first control data takes 1 symbol, because the business datum that eNB is sent is possible to from the 3rd sign-on, so regardless of the last primary sign position that business datum is learnt in the first announcement information, relay is Yi Dan after to the State Transferring of R-UE transmission data to the state for receiving business datum from eNB, it is necessary to receive the business datum of eNB transmissions.

Or in order to avoid that can not determine that eNB sends business datum from that sign-on when relay, when the symbol numbers that PHICH takes in eNB normal down data subframes are 1, the symbol numbers that second control data takes are limited in 1 or 2 by eNB, it is 3 to be so assured that K, so that relay can also determine that K is 3.

(4) when in eNB normal down data subframes PHICH take symbol numbers be 1, and eNB data burst using extension CP when：

The symbol numbers that the second control data takes in A2, normal down data subframes can be 1 or 2 or 3, if the first control data occupancy symbol numbers that relay is sent to eNB are 2, then K_GP=0, eNB can determine Kl=2+0+l=3, K2=l+1=2, or K2=2+l=3, or K2=3+l=4, so Κ=3 or 4.

In this case, for eNB, the symbol numbers that the second control data takes in normal down data subframes are it was determined that so eNB can determine K occurrence.But for relay, due to that can not know the specific number of the symbol that the second control data takes in the normal down data subframes of eNB, and the symbol numbers that can only be taken according to PHICH are individual come the symbol for determining the second control data occupancy Number scope is 1 or 2 or 3, so relay can not determine that K value is 3 or 4.So, eNB sends business datum to relay from the 3rd or 4 sign-on, and sends the first announcement information to relay, notifies relay from the 3rd or 4 sign-on parsing business datum.

The symbol numbers that the second control data takes in B2, normal descending sub frame can be 1 or 2 or 3, if the first control data occupancy symbol numbers information that relay is sent to eNB shows that the first control control data takes 1 symbol, then K_GP=0, eNB can determine Kl=l+0+l=2, K2=l+1=2, or K2=2+l=3, or K3=3+l=4, so Κ=2 or 3 or 4.

In this case, Κ occurrence can be determined for eNB.But for relay, the symbol numbers that can only be taken according to PHICH are 2 or 3 or 4 come the span for determining K.So, eNB sends business datum to relay from the 2nd or 3 or 4 sign-on of determination, and sends the first announcement information to relay, notifies relay from the 2nd or 3 or 4 sign-on parsing business datum.First announcement information can take 2 bits.For example, when the first bit that the first announcement information takes is 1, represent that eNB sends the relay that business datum takes 2 symbols to the first control data described in A2 parts from the 3rd sign-on, when the first bit that the first announcement information takes is 0, represent that eNB sends the relay that business datum takes 2 symbols to the first control data described in A2 parts from the 4th sign-on；When the first bit is 1, the relay of 1 symbol is taken for the first control data, then it is from the 2nd or the 3rd sign-on to be distinguished with second bit to its business datum；When the first bit is 0, also data are parsed from the 4th sign-on for the relay that the first control data takes 1 symbol.First announcement information of this 2 bit can be sent to relay by single physical channel.The physical channel is defined on the 4th symbol, is either defined on eNB in the last symbol of the control channel of relay or some or certain several symbols for being defined on after the 4th symbol are reserved on running time-frequency resource.The control channel for being sent to relay and the Traffic Channel for being sent to relay can use frequency division manner, and position of first announcement information in descending normal sub-frames can be as shown in Figure 6.

In B3, normal down data subframes the second control data take symbol numbers can be 1 or 2 or

3, if the first control data occupancy symbol numbers information that relay is sent to eNB shows that the first control control data takes 1 symbol, take K_GP=l, eNB can determine Kl=l+1+1=3, K2=l+1=2, or K2=2+l=3, or K2=3+l=4, so Κ=3 or 4.

For relay, according to formula（1) it can only determine that K span is 3 or 4 with K_GP=1.So, eNB sends business datum to relay from the 3rd or 4 sign-on, and sends the first announcement information to relay, notifies relay from the 3rd or 4 sign-on parsing business datum.First announcement information can take 1 bit.The sending method of first announcement information is identical with previous embodiment, and no longer Redundant is stated herein.

The embodiment of B2 with B3 parts is compared, and the symbol numbers that the second control data takes in normal down data subframes are 1 or 2 or 3, and the first control data that relay is sent to eNB takes symbol numbers letter Breath shows that the first control control data takes 1 symbol, K_GP value is defined as 0 by B2 parts, the possibility value for the K that eNB is determined is 2 or 3 or 4, and such first announcement information needs to take 2 bits, can cause a part of wasting of resources in data burst.The possibility value that K_GP value is defined as the K of 1, eNB determinations by B3 parts is 3 or 4, and such first announcement information can only take up 1 bit, the resource that can be saved in a part of data burst.

Foregoing embodiments, the second control data for describing eNB takes symbol numbers, the control data of relay side first and takes symbol numbers when taking different value, the primary sign position that business datum is sent to relay that eNB is determined.In the network of relaying technique is employed, an eNB and multiple relay device communications, the different control data of relay first take symbol numbers difference, then the primary sign position for the business datum that eNB is determined is different.

2nd, the data burst of relay side and eNB-side is each configured to another structural representation that MBSFN data bursts are illustrated in figure 7 the relay being related in the embodiment of the present invention and eNB data bursts.Comprising a GP at the ending of the MBSFN data bursts, relay can be caused to have State Transferring of the time from the business datum for receiving eNB transmissions to the first control data of transmission to R_UE.By the first control data in the MBSFN data bursts of relay and be received from eNB transmission business datum between add a GP, and a GP is added at the ending of MBSFN data bursts, relay is completed from State Transferring of first control data to R-UE is sent to the state for receiving the business datum that eNB is sent, and from the State Transferring of the business datum that eNB is sent is received to sending state of first control data to R-UE.For the MBSFN data bursts of relay, the first control data and the GP that adds between the business datum of eNB transmissions is received from, and the GP added at the ending of MBSFN data bursts, length can be different.

In Fig. 5, in eNB data burst, within the time that the second control data takes, eNB sends the second control data to UE, after eNB has sent the second control data, and business datum is to relay or sends data to UE for eNB transmissions.

In this case, the implementation process of data transmission method between eNB and relay uses situation during normal data subframe similar with eNB data bursts, difference is, when eNB data burst is MBSFN data bursts, the symbol numbers that the second control data in eNB MBSFN data bursts takes are different when being normal data subframe from eNB data burst.When eNB data burst is MBSFN data bursts, the symbol numbers that eNB the second control data takes are 1 or 2.（1) when in eNB MBSFN data bursts the second control data take symbol numbers be 1, and eNB data burst use normal CP when, if relay the first control data take symbol numbers be 1,1 _ 0=1,6 can determine Kl=l+1+1=3, K2=l+1=2, so Κ=3.So, eNB sends business datum to relay from the 3rd sign-on.If the first control data occupancy symbol numbers that relay is sent to eNB are that 2, K_GP=1, eNB can determine that Kl=2+1+1=4, K2=2+l=3, Κ is 4.So, eNB sends business datum to relay from the 4th sign-on. Relay is in access eNB for the first time, know the CP length that the symbol numbers of the second control data occupancy and eNB data burst are used in eNB MBSFN data bursts, when the symbol numbers that the second control data takes in eNB MBSFN data bursts are 1, if it is 1 that the first control data, which takes symbol numbers, in the MBSFN sub-frame of relay itself, then K_GP=1, relay is according to formula（1) Kl=l+1+1=3, K2=l+1=2 can be determined, so Κ=3.So, the business datum that relay is sent from the 3rd sign-on parsing eNB.If it is 2, K_GP=1 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, relay can determine that K1=2+1+1=3, K2=3+1=4, Κ is 4.So, the business datum that relay is sent from the 4th sign-on parsing eNB.

(2) when the symbol numbers that the second control data takes in eNB MBSFN data bursts are 1, and eNB data burst is used when extending CP, if it is 1 that the first control data of relay, which takes symbol numbers, then K_GP=0, eNB can determine Kl=l+0+l=2, K2=l+1=2, so Κ=2.So, eNB sends business datum to relay from the 2nd sign-on.If the first control data occupancy symbol numbers that relay is sent to eNB are that 2, K_GP=0, eNB can determine that Kl=2+0+l=3, K2=2+l=3, Κ is 3.So, eNB sends business datum to relay from the 3rd sign-on.

Relay is in access eNB for the first time, know the length of the CP that the symbol numbers of the second control data occupancy and eNB side data burst are used in eNB MBSFN data bursts, when the symbol numbers that the second control data takes in eNB MBSFN data bursts are 1, and when eNB data burst is using extension CP, if it is 1 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, then K_GP=0, relay is according to formula（1) Kl=l+0+l=2, K2=l+1=2 can be determined, so Κ=2.So, the business datum that relay is sent from the 2nd sign-on parsing eNB.If it is 2, K_GP=0 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, relay can determine that Kl=2+0+l=3, K2=2+l=3, Κ is 3.So, the business datum that relay is sent from the 3rd sign-on parsing eNB.

(3) when the symbol numbers that the second control data takes in eNB MBSFN data bursts are 2, and eNB data burst use normal CP when, if the first control data occupancy symbol numbers that relay is sent to eNB are 1, then K_GP=1, eNB can determine Kl=l+1+1=3, K2=2+l=3, so Κ=3.So, eNB sends business datum to relay from the 3rd sign-on.If the first control data occupancy symbol numbers that relay is sent to eNB are that 2, K_GP=1, eNB can determine that Kl=2+1+1=4, K2=2+l=3, Κ is 4.So, eNB sends business datum to relay from the 4th sign-on.

Relay is in access eNB for the first time, know the length of the CP that the symbol numbers of the second control data occupancy and eNB data burst are used in eNB MBSFN data bursts, when the symbol numbers that the second control data takes in eNB MBSFN data bursts use normal CP for 2 and eNB data burst, if it is 1 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, then K_GP=1, relay can determine Kl=l+1+1=3 according to formula (1), K2=2+l=3, so Κ=3. So, the business datum that relay is sent from the 3rd sign-on parsing eNB.If it is 2,1 _ 0 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself=1, relay can determine that Kl=2+1+1=3, K2=3+l=4, Κ is 4.So, the business datum that relay is sent from the 4th sign-on parsing eNB.

(4) when the symbol numbers that the second control data takes in eNB MBSFN data bursts are 2, and eNB data burst is used when extending CP, if the first control data occupancy symbol numbers that relay is sent to eNB are 1, then K_GP=0, eNB can determine Kl=l+0+l=2, K2=2+l=3, so Κ=3.So, eNB sends business datum to relay from the 3rd sign-on.If the first control data occupancy symbol numbers that relay is sent to eNB are that 2, K_GP=0, eNB can determine that Kl=2+0+l=3, K2=2+l=3, Κ is 3.So, eNB sends business datum to relay from the 3rd sign-on.

Relay is in access eNB for the first time, know the length of the CP that the symbol numbers of the second control data occupancy and eNB data burst are used in eNB MBSFN data bursts, when the symbol numbers that the second control data takes in eNB MBSFN data bursts use extension CP for 2 and eNB data bursts, if it is 1 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, then K_GP=0, relay can determine Kl=l+0+l=2 according to formula (1), K2=2+l=3, so Κ=3.So, the business datum that relay is sent from the 3rd sign-on parsing eNB.If it is 2, K_GP=0 that the first control data, which takes symbol numbers, in the MBSFN data bursts of relay itself, relay can determine that Kl=2+0+l=3, K2=3+l=4, Κ is 4.So, the business datum that relay is sent from the 4th sign-on parsing eNB.

When eNB and relay data burst are both configured to MBSFN data bursts, it is known that the symbol numbers shared by eNB the second control data are 1 or 2, symbol numbers shared by first control data of relay are 1 or 2, and because K_GP value is 0 or 1, according to formula（1) value that can determine K is 4 or 3, so in one embodiment, eNB can send business datum to relay from the 4th sign-on, and relay can receive business datum from the 4th sign-on.

II, relay send business datum to eNB

The flow chart of data transmission method embodiment five of the present invention is illustrated in figure 8, including：

The second control data occupancy symbol numbers that step 501, relay take symbol numbers and eNB according to the first control data of itself determine primary sign position of the business datum sent to eNB in the MBSFN data bursts of relay.First control data takes the symbol numbers that symbol numbers take for control data in the MBSFN sub-frame of relay.

Business datum is arranged on the primary sign position by step 502, relay, and sends business datum to eNB.

The flow chart of data transmission method embodiment six of the present invention is illustrated in figure 9, including：

The business datum that step 601, eNB reception relay devices are sent. The second control data occupancy symbol numbers that step 602, eNB take symbol numbers and eNB according to the first control data of relay determine primary sign position of the business datum of relay transmission in the M B S F N data bursts of relay.First control data takes the symbol numbers that symbol numbers are control data occupancy in relay MBSFN data bursts.

Step 6 03, eNB parse the business datum of relay transmission since identified primary sign position.

As Fig. 10 show another structural representation of the relay being related in the embodiment of the present invention and eNB data burst.It can see from Fig. 10, within the time of the second control data occupancy of eNB MBSFN data bursts, eNB sends the second control data to UE, and after a GP, eNB transfers the business datum of reception relay device transmission.After the business datum of relay transmission has been received, then by a GP, the MBSFN sub-frame terminates.

Comprising GP at the ending of the MBSFN data bursts, the State Transferring of the business datum that eNB has the time to be sent from reception relay device can be caused to state of the second control data of transmission to UE.By the second control data in eNB MBSFN data bursts and be received from eNB transmission business datum between add a GP, and a GP is added at the ending of MBSFN data bursts, eNB is completed from sending the state of business datum that the second control data is sent to UE State Transferring to reception relay device, and the business datum sent from reception relay device State Transferring to state of the second control data of transmission to UE.For eNB MBSFN data bursts, the second control data and the GP that adds between the business datum of relay transmission is received from, and the GP added at the ending of MBSFN data bursts, length can be different.In Fig. 10, in the MBSFN data bursts of relay, within the time that the first control data takes, relay sends the first control data to R-UE, and then relay transmission business datum is to eNB.First control data in the MBSFN sub-frame of relay can be taken symbol numbers and be sent to eNB by relay when being initially accessed eNB or relay have changed the symbol numbers that the first control data in its MBSFN data burst takes.Relay can know the symbol numbers that the second control data takes in eNB MBSFN sub-frame when being initially accessed eNB.

Relay determines that the primary sign position for the business datum for being sent to eNB can be according to formula in step 502（2) carry out.

M=max (K 3, K4) (2)

Formula（2) in, M is sent to primary sign position of the eNB business datum in the MBSFN sub-frame of relay for what relay was determined, and K 3 represents that relay can send out the earliest character position of data, 3=X1+1 of K to eNB;Κ 4 represents that eNB can be parsed（Demodu l a t i on and decod ing) relay send business datum earliest character position, K4=X2+K _ GP+1 is that M value should be the higher value in K 3 or K4.Formula（2) in, K_GP value is 1.Formula is interpreted in detail below（2) the reason for K_GP values are 1 in.

When eNB data burst uses normal CP, because being used in the data burst of relay Be generally also normal CP, the situation is just the same using normal CP and transmission business datum situation with eNB, simply data transfer direction becomes, therefore when relay sends business datum to eNB, then no matter the symbol numbers that the control datas of eNB second take be 1 or 2, K_GP value be 1.

When eNB data burst uses extension CP, because relay data burst generally uses normal CP, an eNB symbol is about 11 microseconds than a symbol of relay（That is 16. 7-4. 7), so the original position that the symbol in relay and eNB corresponding data subframes only has first symbol is alignment.If the symbol numbers that eNB the second control data takes are 1, when eNB has sent its first symbol, in the middle part of second of the data burst in relay symbol, therefore eNB can not parse the 2nd symbol of relay.But eNB probably has 50 microseconds in the 3rd symbol for having sent its first symbol to relay, reception state is transformed into when can send the 3rd symbol in relay completely, therefore eNB can parse data, i.e. K_GP=3-1-1=1 from the 3rd sign-on of relay earliest in this case;If the symbol numbers that eNB the second control data takes are 2, it can similarly draw, eNB can parse business datum from the 4th sign-on of relaying earliest, i.e., still have K_GP=4-2-l=l.That is, when relay sends business datum to eNB, if eNB data burst is using extension CP, though the symbol numbers that the control data of eNB-side second takes be 1 or 2, K_GP value be 1.

In step 602, eNB can also be according to formula（2) come determine relay send business datum primary sign position.

First control data occupancy symbol numbers are different with the second control data occupancy symbol numbers, and M value is also just different.

(1) when the symbol numbers that the first control data takes in the MBSFN data bursts of relay are 1, if the symbol numbers that the second control data in eNB MBSFN data bursts takes are 1, K3=l+1=2 can then be determined, K4=l+1+1=3, so Μ=3.Relay sends business datum to eNB from the 3rd sign-on.If the symbol numbers that the second control data in eNB MBSFN data bursts takes are 2, K3=l+1=2, K4=2+l+l=4 can be determined, so Μ=4.Relay sends business datum to eNB from the 4th sign-on.

When the first control data occupancy symbol numbers there occurs change in the MBSFN data bursts that relay is initially accessed eNB or relay, the first control data that eNB reception relay devices are sent takes symbol numbers.When the symbol numbers that the first control data takes in the MBSFN data bursts of relay are 1, if the symbol numbers that the second control data in eNB MBSFN sub-frame takes are 1, K3=l+1=2, K4=l+1+1=3 can be then determined, so M=3.The business datum that eNB is sent from the 3rd sign-on reception relay device.If the symbol numbers that the second control data in eNBMBSFN data bursts takes are 2, K3=l+1=3, K4=2+l+l=4 can be determined, so M=4.The business datum that eNB is sent from the 4th sign-on reception relay device.

(2) when the symbol numbers that the first control data takes in the MBSFN data bursts of relay are 1 When, if the symbol numbers that the second control data in eNB MBSFN data bursts takes are 1, K3=l+1=2, K4=l+1+1=3 can be determined, so Μ=3.Relay sends business datum to eNB from the 2nd sign-on.If the symbol numbers that the second control data in eNB MBSFN data bursts takes are 2, K3=l+1=2, K4=2+l+l=4 can be determined, so Μ=4.Relay sends business datum to eNB from the 4th sign-on.

When the first control data occupancy symbol numbers there occurs change in the MBSFN data bursts that relay is initially accessed eNB or relay, the first control data that eNB reception relay devices are sent takes symbol numbers.When the symbol numbers that the first control data takes in the MBSFN data bursts of relay are 1, if the symbol numbers that the second control data in eNB MBSFN data bursts takes are 1, K3=l+1=2 can then be determined, K4=l+1+1=3, so M=3.The business datum that eNB is sent from the 3rd sign-on parsing relay.If the symbol numbers that the second control data in eNB MBSFN data bursts takes are 2, K3=l+1=2, K4=2+l+l=4 can be determined, so M=4.The business datum that eNB is sent from the 3rd sign-on reception relay device.

When eNB and relay data burst are both configured to MBSFN data bursts, it is known that the symbol numbers shared by eNB the second control data are 1 or 2, symbol numbers shared by first control data of relay are 1 or 2, according to formula（2) value that can determine M is 4 or 3, so in one embodiment, relay can send business datum to eNB from the 4th sign-on, and eNB can be from the 4th sign-on parsing business datum.

It should be noted that in foregoing embodiments, either eNB sends business datum and sends business datum to eNB to relay, or relay, can be according to formula in the recipient of business datum（1) or（2) in the case of clearly determining primary sign position of the business datum in the data burst of sender, the sender and recipient of business datum are employed each according to formula（1), or each according to formula（2) mode of the position of the primary sign of business datum is determined, the primary sign position for the business datum for determining itself without the sender using business datum is sent to by the way of recipient by a single information, because if the position for the business datum primary sign for being determined sender by a single information is sent to recipient, resource can be taken, some useful business datums may be caused not transmitted in time.

It is the structural representation of data transmission device embodiment one of the present invention as shown in figure 11, the data transmission device includes the first determining module 11 and the first sending module 12 being connected.The operation principle of the device is：First determining module 11 determines the position of primary sign of the business datum sent to second device in the data burst of the data transmission device；The position of primary sign, which takes control data in the data burst of symbol numbers and second device according to control data in the data burst of the data transmission device and takes symbol numbers, to be determined；Business datum is arranged on the position for the primary sign that the first determining module 11 is determined by the first sending module 12, and sends business datum to second device.

As Figure 12 show the structural representation of data transmission device embodiment two of the present invention, specifically, figure Data transmission device shown in 12 is eNB, and second device is relay, and the data transmission device also includes the first setup module 13 on the basis of embodiment one, and the first setup module 13 is connected with the first determining module 11.First setup module 13 is used for control data in the CP length used in the data burst according to eNB itself and the M B S F N data bursts of relay and takes the value that symbol numbers set the first parameter；When it is 1 that control data, which takes symbol numbers, during the CP used in eNB data burst is extension CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 1 or 0 by the first setup module 13;When it is 2 that control data, which takes symbol numbers, during the CP used in eNB data burst is extension CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 0 by the first setup module 13;When it is 1 or 2 that control data, which takes symbol numbers, during the CP used in eNB data burst is normal CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 1 by the first setup module 13.

First determining module 11 takes the value that control data in symbol numbers, eNB itself data burst takes the first parameter that symbol numbers and the first setup module 13 are set specifically for control data in the MBSFN data bursts according to relay, it is determined that the position of primary sign of the business datum sent to relay in eNB data burst.

Data transmission device shown in Figure 12 also includes the first receiving module 14, is connected respectively with the first determining module 11 and the first setup module 13.Control data takes symbol numbers in the MBSFN data bursts for the relay that the reception relay device of first receiving module 14 is sent, and control data occupancy symbol numbers in the MBSFN data bursts of the relay received are sent into the first determining module 11 and the first setup module 13.

First determining module 11 specifically can be according to formula（1) determine the position of primary sign of the business datum sent to relay in eNB-side data subframe, it is determined that method it is similar with aforementioned data transmission method embodiment, no longer Redundant is stated herein.

Data transmission device shown in Figure 12 also includes the second sending module 15, second sending module 15 is connected with the first determining module 11, second sending module 15 sends the first announcement information to relay, and the first announcement information is used to show that the eNB is sent to the position of primary sign of the business datum of the relay in eNB data burst.

In another embodiment, the data transmission device shown in Fig. 11 can be relay, and second device can be eNB, and the first determining module 11 specifically can be according to formula（2) position of primary sign of the business datum sent to eNB in the data burst of relay is determined.On the basis of Figure 11 shown devices, the first acquisition module can also be included, control data takes symbol numbers in data burst for obtaining eNB, and control data occupancy symbol numbers in the eNB of acquisition data burst are sent into the first determining module 11.

As Fig. 13 show the structural representation of data transmission device embodiment three of the present invention, including the second receiving module 21, the second determining module 22 and the first parsing module 23, the first parsing module 23 is respectively with second The determining module 22 of receiving module 21 and second is connected.The operation principle of the device is：Second receiving module 21 receives the business datum that first device is sent；Second determining module 22 determines the position of primary sign of the business datum of first device transmission in the data burst of first device；First parsing module 23, parses the business datum that the second receiving module 21 is received since the second determining module 22 determines the position of primary sign.

As Fig. 14 show data transmission device example IV structural representation of the present invention, specifically, data transmission device shown in Figure 14 is relay, second device is eNB, the data transmission device also includes the second setup module 24 on the basis of embodiment three, second setup module 24 is connected with the second determining module 22, and the second setup module 24 is used for the value that control data in the MBSFN data bursts according to relay itself takes the CP used in symbol numbers and eNB data burst length the first parameter of setting；When it is 1 that control data, which takes symbol numbers, during the CP used in eNB data burst is extension CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 1 or 0 by the second setup module 24;When it is 2 that control data, which takes symbol numbers, during the CP used in eNB data burst is extension CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 0 by the second setup module 24;When it is 1 or 2 that control data, which takes symbol numbers, during the CP used in eNB data burst is normal CP, and the MBSFN data bursts of relay, the value of the first parameter is set to 1 by the second setup module 24.

Second determining module 22 takes the value that control data in symbol numbers, eNB data burst takes the first parameter that symbol numbers information and the second setup module are set specifically for control data in the MBSFN data bursts according to relay itself, determines the position of primary sign of the business datum of eNB transmissions in eNB data burst；Control data takes the scope for the symbol numbers that symbol numbers information takes for control data in the symbol numbers of control data occupancy in eNB data burst or eNB data burst in eNB data burst.Second determining module 22 determines the detail of the position of primary sign of the business datum sent in eNB data burst, specifically can be according to formula（1) determine, similar with aforementioned data transmission method embodiment, no longer Redundant is stated herein.

Data transmission device shown in Fig. 14 can also include the second acquisition module 25, control data takes the CP used in symbol numbers information and eNB data burst length in data burst for obtaining eNB, and the length that control data in the eNB taken data burst is taken into the CP used in symbol numbers information and eNB data burst is sent to the second determining module 22 and second setup module 24.

In another embodiment, the data transmission device shown in Fig. 13 can be eNB, and second device can be relay, and the second determining module 22 specifically can be according to formula（2) position of primary sign of the business datum of relay transmission in the data burst of relay is determined.On the basis of the shown devices of Fig. 13, control data in the 3rd receiving module, the MBSFN data bursts of the relay sent for reception relay device can also be included and take symbol numbers, and the MBSFN data of the relay received are sub Control data takes symbol numbers and is sent to the second determining module 22 in frame.

In the embodiment of the present invention, first device can take symbol numbers according to control data in the data burst of control data occupancy symbol numbers and second device in the data burst of itself and determine to be sent to the position of the primary sign of the business datum of second device, second device can also determine to send the position of the primary sign for the business datum that first device is sent, so, it can just solve due to the problem of the partial service data that first device and second device can not know mutually the primary sign position of business datum in the data burst sent each other and bring can not be resolved or data transmission efficiency is not high, first device can be eNB, second device can be relay；Or, first device can be relay, and second device can be eNB.

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can be completed by the related hardware of programmed instruction, foregoing program can be stored in a computer read/write memory medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：R0M, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (24)

1. Claims

   1st, a kind of data transmission method, it is characterised in that including：

   First device determines the position of primary sign of the business datum sent to second device in the data burst of the first device；The position of the primary sign, which takes control data in the data burst of symbol numbers and the second device according to control data in the data burst of the first device and takes symbol numbers, to be determined；

   The business datum is arranged on the position of the primary sign by the first device, and sends the business datum to the second device.

   2nd, the data transmission method according to claim 1, it is characterised in that if the first device is base station, the second device is relay；

   Before the position that primary sign of the business datum sent to second device in the data burst of the first device is then determined in the first device, in addition to：

   The base station is according to the cyclic prefix used in the data burst of itself（CP length) and the multicast SFN of the relay（MBS FN) control data takes the value that symbol numbers set the first parameter in data burst.

   3rd, the data transmission method according to claim 2, it is characterised in that the first device determines that the position of primary sign of the business datum sent to second device in the data burst of the first device is specifically included：

   The base station takes the value that control data in symbol numbers, the data burst of itself takes symbol numbers and the first set parameter according to control data in the MBSFN data bursts of the relay, it is determined that the position of primary sign of the business datum sent to the relay in the data burst of the base station.

   4th, data transmission method according to claim 3, it is characterised in that also include：When control data occupancy symbol numbers change in the MBSFN data bursts that the relay is initially accessed the base station or the relay, control data takes symbol numbers in the MBSFN data bursts for the relay that the base station reception relay is sent.

   5th, the data transmission method according to claim 4, the value of the first parameter is set to specifically include characterized in that, the base station takes symbol numbers according to control data in the CP used in the data burst of itself length and the MBSFN data bursts of the relay：

   If the CP used in the data burst of itself of the base station is 1 to extend control data in CP, and the MBSFN data bursts of the relay to take symbol numbers, then the value of first parameter is set to 1 or 0;

   If the CP used in the data burst of itself of the base station is 2 to extend control data in CP, and the MBSFN data bursts of the relay to take symbol numbers, then the value of first parameter is set to 0; If the CP used in the data burst of itself of the base station for normal CP, and the MBSFN data bursts of the relay in control data take symbol numbers be 1 or 2, then the value of first parameter is set to 1.

   6th, the data transmission method according to claim 5, it is characterized in that, the base station takes the value that control data in symbol numbers, the data burst of itself takes symbol numbers and the first set parameter according to control data in the MBSFN data bursts of the relay, it is determined that the position of primary sign of the business datum sent to the relay in the data burst of the base station is specifically included：

   The base station determines the position of primary sign of the business datum sent to the relay in the data burst of the base station ,+K of 1=X of K 1 _ GP+1, K2=X2+1 according to formula K=max (K l, K2);κ is the position for the primary sign to the business datum of relay transmission in the data burst of base station that the base station is determined, max is to take larger value function, K value is the higher value in K 1 and K2, X I take symbol numbers for control data in the MBSFN data bursts of the relay, X2 takes symbol numbers for control data in the data burst of the base station, and K _ G P are first parameter.

   7th, the data transmission method according to any claim in claim 1-6, it is characterised in that also include：

   The base station sends the first announcement information to the relay, and first announcement information is used to show that the base station is sent to the position of primary sign of the business datum of the relay in the data burst of base station.

   8th, the data transmission method according to claim 7, it is characterized in that, first announcement information is sent to the relay by a single physical channel, the physical channel is arranged on the base station and is sent in the last symbol of the control channel of the data burst of the relay, or is arranged on the base station and is sent in the 4th symbol of the data burst of the relay；Or first announcement information carries and is sent to the Physical Downlink Control Channel of the data burst of the relay in the base station（PDCCH in).

   9, data transmission method according to claim 8, it is characterized in that, also include sending the second announcement information to the relay, second announcement information is used to indicate when the control channel in the data burst that the base station is sent to the relay and the base station are sent to the Traffic Channel frequency division of the relay, the control channel occupies a PRB of the whole bandwidth original position of the data burst and a PRB of end position, or the control channel occupies 2 PRB of the whole bandwidth original position of the data burst and 2 PRB of end position.

   10th, data transmission method according to claim 1, it is characterised in that if the first device is relay, the second device is base station；

   Then the first device determines to specifically include to the position that second device sends primary sign of the business datum in the data burst of the first device： The relay determines primary sign position of the business datum sent to the base station in the data burst of the relay, 3=X of K 1+1, K4=X2+K _ GP+ 1 according to formula M=max (K 3, K4):

   M is the position for the primary sign to the business datum of base station transmission in the MBSFN data bursts of the relay that the relay is determined, max is to take larger value function, M value is the higher value in K 3 and K4, XI takes symbol numbers for control data in the MBSFN data bursts of the relay, X2 takes symbol numbers for control data in the data burst of the base station, K _ GP is first parameter, and the value of the K _ GP is 1.

   11, the data transmission method according to claim 10, it is characterised in that also include：The relay obtains control data in the data burst of the base station and takes symbol numbers when being initially accessed the base station.

   12, a kind of data transmission method, it is characterised in that including：

   Second device receives the business datum that first device is sent；

   The second device determines the position of primary sign of the business datum of the first device transmission in the data burst of the first device；

   The second device parses the business datum that the first device is sent since the position of the primary sign.

   13, the data transmission method according to claim 12, it is characterised in that if the second device is relay, the first device is base station；

   Then also include：

   The relay takes the value of the CP used in the data burst of symbol numbers and the base station length the first parameter of setting according to control data in the MBSFN data bursts of itself；

   The second device determines that the position of primary sign of the business datum of the first device transmission in the data burst of the first device is specifically included：

   The relay takes the value that control data in symbol numbers, the data burst of the base station takes symbol numbers information and the first set parameter according to control data in the MBSFN data bursts of itself, determines the position of primary sign of the business datum of the base station transmission in the data burst of the base station；Control data takes the scope for the symbol numbers that symbol numbers information takes for control data in the symbol numbers of control data occupancy in the data burst of the base station or the data burst of base station in the data burst of the base station.

   14th, the data transmission method according to claim 13, it is characterised in that also include：The relay obtains the length that control data in the data burst of the base station takes the CP used in the data burst of symbol numbers information and the base station when being initially accessed the base station.

   15, the data transmission method according to claim 14, it is characterised in that the relay takes symbol numbers and the base station according to control data in the MBSFN data bursts of itself The CP used in data burst length sets the value of the first parameter to specifically include：

   If the CP used in the data burst of the base station is 1 to extend control data in CP, and the MBSFN data bursts of the relay to take symbol numbers, then the value of first parameter is set to 1 or 0;

   If the CP used in the data burst of the base station is 2 to extend control data in CP, and the MBSFN data bursts of the relay to take symbol numbers, then the value of first parameter is set to 0;

   If the CP used in the data burst of the base station for normal CP, and the MBSFN data bursts of the relay in control data take symbol numbers be 1 or 2, then the value of first parameter is set to 1.

   16th, the data transmission method according to any claim in claim 1 3-15, it is characterized in that, the relay takes the value that control data in symbol numbers, the data burst of the base station takes symbol numbers information and the first set parameter according to control data in the MBSFN data bursts of itself, determines that the position of primary sign of the business datum of the base station transmission in the data burst of the base station is specifically included：

   The relay determines the position of primary sign of the business datum of the base station transmission in the data burst of the base station, K 1=X1+K_GP+1, K2=X2+1 according to formula K=max (K l, K2);

   Κ is the position of primary sign of the business datum for the base station transmission that the relay is determined in the data burst of the base station, max is to take larger value function, K value is the higher value in K1 and K2, XI takes symbol numbers for control data in the MBSFN data bursts of the relay, X2 takes symbol numbers for control data in the data burst of the base station, and K _ GP is first parameter.

   17th, a kind of data transmission device, it is characterised in that including：

   First determining module, the position for the primary sign of the business datum that determines to send to second device in the data burst of the data transmission device；The position of the primary sign, which takes control data in the data burst of symbol numbers and the second device according to control data in the data burst of the data transmission device and takes symbol numbers, to be determined；

   First sending module, for the business datum to be arranged on to the position of the primary sign, and sends the business datum to the second device.

   18th, the data transmission device according to claim 17, it is characterised in that the data transmission device is base station, the second device is relay；

   The data transmission device also includes：

   First setup module, the value that symbol numbers set the first parameter is taken for control data in the length and the MBSFN data bursts of the relay according to the CP used in the data burst of itself of the base station； First determining module takes the value that control data in symbol numbers, the base station data burst of itself takes the first parameter that symbol numbers and first setup module are set specifically for control data in the MBSFN data bursts according to the relay, it is determined that the position of primary sign of the business datum sent to the relay in the data burst of the base station.

   19th, the data transmission device according to claim 18, it is characterized in that, also include the first receiving module, control data takes symbol numbers in MBSFN data bursts for receiving the relay that the relay is sent, and control data occupancy symbol numbers in the MBSFN data bursts of the relay are sent into first determining module and the first setup module.

   20th, the data transmission device according to claim 19, it is characterized in that, first setup module is specifically for when the CP used in the data burst of the base station is extension CP, and when control data occupancy symbol numbers are 1 in the MBSFN data bursts of the relay, the value of first parameter is set to 1 or 0;

   When it is 2 that control data, which takes symbol numbers, during the CP used in the data burst of the base station is extension CP, and the MBSFN data bursts of the relay, the value of first parameter is set to 0;

   When it is 1 or 2 that control data, which takes symbol numbers, during the CP used in the data burst of the base station is normal CP, and the MBSFN data bursts of the relay, the value of first parameter is set to 1.

   21st, the data transmission device according to claim 20, it is characterized in that, first determining module is specifically for according to formula K=max (Kl, K2 the position of primary sign of the business datum sent to the relay in the data burst of the base station side) is determined, K1=X1+K_GP+1, K2=X2+1;

   Κ is the position for the primary sign to the business datum of relay transmission in the data burst of base station that the base station is determined, max is to take larger value function, K value is the higher value in K1 or K2, XI takes symbol numbers for control data in the MBSFN data bursts of the relay, X2 takes symbol numbers for control data in the data burst of the base station, and K _ G P are first parameter.

   22nd, the data transmission device according to any claim in claim 18-21, it is characterized in that, also include the second sending module, it is connected with first determining module, for sending the first announcement information to the relay, first announcement information is used to show that the base station is sent to the position of primary sign of the business datum of the relay in the data burst of base station.

   23rd, the data transmission device according to claim 17, it is characterised in that the data transmission device is relay, the second device is base station；

   First determining module is specifically for the position according to formula M=max (K3, K4) primary signs of the business datum in the data burst of the relay for determining to send to the base station, K3=X1+1, K4=X2+K_GP+1: M is the position for the primary sign to the business datum of base station transmission in the MBSFN data bursts of the relay that the relay is determined, max is to take larger value function, M value is the higher value in K 3 or K4, XI takes symbol numbers for control data in the MBSFN data bursts of the relay, X2 takes symbol numbers for control data in the data burst of the base station, and K_GP is first parameter.

   24th, control data takes symbol numbers in the data transmission device according to claim 23, it is characterised in that the first acquisition module, the data burst for obtaining the base station.

   25th, a kind of data transmission device, it is characterised in that including：

   Second receiving module, the business datum for receiving first device transmission；

   Second determining module, the position for determining primary sign of the business datum of the first device transmission in the data burst of the first device；

   The business datum that second receiving module is received is parsed first parsing module, the position for determining primary sign since second determining module.

   26th, the data transmission device according to claim 25, it is characterised in that the data transmission device is relay, the first device is base station；

   The data transmission device also includes the second setup module, and the length for taking the CP used in the data burst of symbol numbers and the base station for control data in the MBS FN data bursts according to the relay itself sets the value of the first parameter；

   Second determining module takes the value that control data in symbol numbers, the data burst of the base station takes the first parameter that symbol numbers information and second setup module are set specifically for control data in the MBSFN data bursts according to the relay itself, determines the position of primary sign of the business datum of the base station transmission in the data burst of the base station；Control data takes the scope for the symbol numbers that symbol numbers information takes for control data in the symbol numbers of control data occupancy in the data burst of the base station or the data burst of base station in the data burst of the base station.

   27th, the data transmission device according to claim 26, it is characterised in that also include：Second acquisition module, control data takes the CP used in the data burst of symbol numbers information and the base station length in data burst for obtaining the base station, and the length that control data in the data burst of the acquired base station is taken into the CP used in the data burst of symbol numbers information and the base station is sent to second determining module and second setup module.