CN101567777A - Synergizing method and synergizing device - Google Patents
Synergizing method and synergizing device Download PDFInfo
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- CN101567777A CN101567777A CNA2009100863062A CN200910086306A CN101567777A CN 101567777 A CN101567777 A CN 101567777A CN A2009100863062 A CNA2009100863062 A CN A2009100863062A CN 200910086306 A CN200910086306 A CN 200910086306A CN 101567777 A CN101567777 A CN 101567777A
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- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 20
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000002195 synergetic effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
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- 238000010295 mobile communication Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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Abstract
本发明公开了一种协同的方法，包括：移动台将数据分为两个部分N1和N2，向基站和中继站发送N1；基站根据移动台发送的N1判断出需要中继站进行协同；中继站根据移动台发送的N1判断出需要移动台重传N2；移动台向中继站重传N2；中继站向基站发送N2；基站根据中继站发送的N2判断出需要中继站重传N2；中继站向基站重传N2。本发明还公开了一种协同的装置，包括：移动台发送单元，基站判断需要中继站协同单元，中继站判断需要移动台重传单元，移动台重传单元，中继站发送单元，基站判断需要中继站重传单元，中继站重传单元。采用本发明方案，能降低移动台向基站传输数据的误比特率和误块率，同时还能提高资源利用率。
The invention discloses a coordination method, comprising: the mobile station divides the data into two parts N1 and N2 , and sends N1 to the base station and the relay station; the base station judges that the relay station needs to coordinate according to the N1 sent by the mobile station; The relay station judges that the mobile station needs to retransmit N2 according to the N1 sent by the mobile station; the mobile station retransmits N2 to the relay station; the relay station sends N2 to the base station; the base station judges that the relay station needs to retransmit N2 according to the N2 sent by the relay station; The relay station retransmits N 2 to the base station. The invention also discloses a coordination device, including: a mobile station sending unit, a base station judging that a relay station coordination unit is needed, a relay station judging that a mobile station retransmission unit is needed, a mobile station retransmission unit, a relay station sending unit, and a base station judging that a relay station needs to retransmit a leaflet Yuan, relay station retransmission unit. By adopting the solution of the invention, the bit error rate and block error rate of data transmitted from the mobile station to the base station can be reduced, and the resource utilization rate can be improved at the same time.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of synergizing method and device.
Background technology
The signal influence that transmission can be declined in wireless channel.For to anti-fading, can use the technology such as diversity.Wherein, in this side of up link transmitting terminal, can use the transmission diversity.The basic thought that sends diversity be transmitting terminal with same signal, use different antennae, by different channels, pass to receiving terminal.But in the Cellular Networks mobile communication, travelling carriage can't be settled many antennas, so can't realize traditional transmission diversity in this side of travelling carriage owing to being subjected to reasons such as power, size.
In order to address the above problem, the someone has proposed collaborative concept.Though single mobile station can't be realized traditional transmission diversity, by collaborative,, can realize virtual transmission diversity between a plurality of travelling carriages mutually for the other side sends data.
In the prior art, the scheme of synergistic application under the fixed relay station scene there are two kinds: AF (Amplify-and-Forward, amplification forwarding) and DF (Decode-and-Forward, decoding is transmitted).Two schemes all is that whole transmission is divided into two time slots.First time slot, travelling carriage is to base station and relay station broadcast data; Second time slot, in the AF scheme, relay station directly amplifies the data of travelling carriage broadcasting, is transmitted to the base station again; In the DF scheme, relay station is earlier with the data decoding of travelling carriage broadcasting, encodes and sends to the base station.
Existing scheme has some shortcomings.In the AF scheme, when relay station amplifies useful signal, also can amplify the noise of travelling carriage to this section of relay station link; In the DF scheme, because the error of transmission of link between travelling carriage and the relay station, what relay station was deciphered out may be different with former data, and recompile forwards again in this case, can cause error propagation.In addition, the forwarding of AF scheme and DF scheme no matter be to amplify or decoding, all is to repeat to transmit, and has wasted resource.
Summary of the invention
The embodiment of the invention provides a kind of collaborative method and device, to reduce travelling carriage to bit error rate and the Block Error Rate of base-station transmission data, improves resource utilization.
The embodiment of the invention provides a kind of collaborative method, comprising: travelling carriage is divided into two part N with data
1And N
2, send N to base station and relay station
1The N that the base station sends according to travelling carriage
1Judging needs relay station to work in coordination with; The N that relay station sends according to travelling carriage
1Judging needs travelling carriage to retransmit N
2Travelling carriage retransmits N to relay station
2Relay station sends N to the base station
2The N that the base station sends according to relay station
2Judging needs relay station to retransmit N
2Relay station retransmits N to the base station
2
The embodiment of the invention provides a kind of collaborative device, comprising: the travelling carriage transmitting element is used for travelling carriage data is divided into two part N
1And N
2, send N to base station and relay station
1The base station is judged needs relay station to work in coordination with the unit, is used for the N that the base station sends according to travelling carriage
1Judging needs relay station to work in coordination with; Relay station is judged needs the travelling carriage retransmission unit, is used for the N that relay station sends according to travelling carriage
1Judging needs travelling carriage to retransmit N
2The travelling carriage retransmission unit is used for travelling carriage and retransmits N to relay station
2The relay station transmitting element is used for relay station and sends N to the base station
2The base station is judged needs the relay station retransmission unit, is used for the N that the base station sends according to relay station
2Judging needs relay station to retransmit N
2The relay station retransmission unit is used for relay station and retransmits N to the base station
2
The embodiment of the invention is with RCPC codes (Rate Compatible Punctured Convolutionalcodes, the rate adaptation convolution code) basic thought is applied under the collaborative scene of fixed relay station, when obtaining diversity gain, also obtained coding gain.Compare with existing scheme, neither can cause the amplification noise of AF scheme, owing to used CRC (Cyclical Redundancy Check, cyclic redundancy check (CRC)) and retransmission mechanism, also can not cause the error propagation of DF scheme, therefore can reduce bit error rate and the Block Error Rate of travelling carriage to the base station transmits data.In addition, because the data with transmitting that relay station receives are two parts of primary data, so can as AF scheme and DF scheme, not waste resource, therefore improved resource utilization.
Description of drawings
Fig. 1 is the Synergistic method schematic diagram of AF scheme in the existing scheme;
Fig. 2 is the Synergistic method schematic diagram of DF scheme in the existing scheme;
Fig. 3 is the Synergistic method schematic diagram of the embodiment of the invention;
Fig. 4 is the collaborative device schematic diagram of the embodiment of the invention.
Embodiment
As shown in Figure 3, the Synergistic method of the embodiment of the invention comprises the steps:
Step 31, travelling carriage are divided into two part N with data
1And N
2, send N to base station and relay station
1
Travelling carriage carries out primary data earlier the CRC coding, and the thought according to RCPC codes is divided into two parts with data then.
The N that step 32, base station send according to travelling carriage
1Judging needs relay station to work in coordination with.
The N that the base station sends according to travelling carriage
1Carrying out CRC detects: correct if CRC detects, then transfer of data is correct; If it is incorrect that CRC detects, then need relay station to work in coordination with.
The N that step 33, relay station send according to travelling carriage
1Judging needs travelling carriage to retransmit N
2
The N that relay station sends according to travelling carriage
1Carrying out CRC detects: correct if CRC detects, then relay station sends N to the base station
2If it is incorrect that CRC detects, then carry out earlier travelling carriage and retransmit N
2, carry out again relay station and send N to the base station
2
Travelling carriage retransmits N
2, base station and relay station can both be received, within maximum retransmission:
If the N that the base station sends according to travelling carriage
2The N of before travelling carriage transmission
1Carry out CRC and detect correctly, then transfer of data is correct;
If the N that the base station sends according to travelling carriage
2The N of before travelling carriage transmission
1It is incorrect to carry out the CRC detection, and relay station is according to the N of travelling carriage transmission
2The N of before travelling carriage transmission
1It is also incorrect to carry out the CRC detection, then data transmission fault;
If the N that the base station sends according to travelling carriage
2The N of before travelling carriage transmission
1It is incorrect to carry out the CRC detection, but the N that relay station sends according to travelling carriage
2The N of before travelling carriage transmission
1Carry out CRC and detect correctly, then relay station sends N to the base station
2
The N that step 36, base station send according to relay station
2Judging needs relay station to retransmit N
2
The N that the base station sends according to relaying
2Carrying out CRC detects:
If the N that the base station sends according to relay station
2The N of before travelling carriage transmission
1Carry out CRC and detect correctly, then transfer of data is correct;
If the N that the base station sends according to travelling carriage
2The N of before travelling carriage transmission
1Carry out CRC and detect correctly, then relay station retransmits N to the base station
2
Step 37, relay station retransmit N to the base station
2
Relay station retransmits N to the base station
2, within maximum retransmission:
If the N that the base station sends according to relay station
2The N of before travelling carriage transmission
1Carry out CRC and detect correctly, then transfer of data is correct;
If the N that the base station sends according to relay station
2The N of before travelling carriage transmission
1It is incorrect to carry out the CRC detection, then data transmission fault.
As shown in Figure 4, the collaborative device of the embodiment of the invention comprises: travelling carriage transmitting element 41, the base station is judged needs relay station to work in coordination with unit 42, relay station is judged needs travelling carriage retransmission unit 43, travelling carriage retransmission unit 44, relay station transmitting element 45, the base station is judged needs relay station retransmission unit 46, relay station retransmission unit 47.
Travelling carriage transmitting element 41 is used for travelling carriage data is divided into two part N
1And N
2, send N to base station and relay station
1
The base station is judged needs relay station to work in coordination with unit 42, is used for the N that the base station sends according to travelling carriage
1Judging needs relay station to work in coordination with;
Relay station is judged needs travelling carriage retransmission unit 43, is used for the N that relay station sends according to travelling carriage
1Judging needs travelling carriage to retransmit N
2
Travelling carriage retransmission unit 44 is used for travelling carriage and retransmits N to relay station
2
Relay station transmitting element 45 is used for relay station and sends N to the base station
2
The base station is judged needs relay station retransmission unit 46, is used for the N that the base station sends according to relay station
2Judging needs relay station to retransmit N
2
Relay station retransmission unit 47 is used for relay station and retransmits N to the base station
2
The explanation of this patent innovative point:
(1) travelling carriage is divided into two parts with data, travelling carriage sends to relay station, and what be transmitted to the base station with relay station is exactly respectively these two parts, therefore the base station sends to travelling carriage after the partial data of base station and partial data that relay station is transmitted to the base station merge, except obtaining diversity gain, can also obtain coding gain.
(2) introduce CRC check and re-transmission, reduced the probability that data are made mistakes.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100863062A CN101567777A (en) | 2009-06-10 | 2009-06-10 | Synergizing method and synergizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100863062A CN101567777A (en) | 2009-06-10 | 2009-06-10 | Synergizing method and synergizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101567777A true CN101567777A (en) | 2009-10-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100863062A Pending CN101567777A (en) | 2009-06-10 | 2009-06-10 | Synergizing method and synergizing device |
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|---|---|
| CN (1) | CN101567777A (en) |
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2009
- 2009-06-10 CN CNA2009100863062A patent/CN101567777A/en active Pending
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Open date: 20091028 |