Method, device, and base station for transmitting data of hotspot cell coverage
A method for transmitting data of hotspot cell coverage includes: a base station adjusts a Modulation and Coding Scheme (MCS) table allowing the same to satisfy a 256 QAM modulation scheme, and acquires layer 1 Transport Block Size (TBS) when the modulation scheme is 256 QAM; on the basis of N PRB , I TBS and the number of Transport Block (TB) mapping layers, the base station determines the TBS currently transmitting data, and transmits data on the basis of the TBS. Also provided is a device and base station for transmitting data. Employment of the method, device, and base station for transmitting the data of hotspot cell coverage of embodiments of the disclosure allows for optimized modulation scheme for the same to support up to 256 QAM, and for improved system throughput, thus solving the problem in hotspot cell coverage of system transmission speed not capable of satisfying actual demand.
1. A method for transmitting data of hotspot cell coverage, comprising:
step a. adjusting, by a base station, a Modulation and Coding Scheme (MCS) table allowing the same to satisfy a 256 QAM modulation scheme, and acquiring a layer 1 Transport Block Size (TBS) when the modulation scheme is 256 QAM;
step b. on the basis of N PRB , I TBS and the number of Transport Block (TB) mapping layers, determining, by the base station, the TBS currently transmitting data, and transmitting data on the basis of the TBS.
2. The method according to claim 1 , wherein step of acquiring the layer 1 TBS when the modulation scheme is 256 QAM as described in the step a, comprising: on the basis of N PRB and I TBS , taking I TBS as index row, taking N PRB as index column, looking up, by the base station, the MCS table to acquire the layer 1 TBS when the modulation scheme is 256 QAM.
3. The method according to claim 2 , wherein acquiring the layer 1 TBS when the modulation scheme is 256 QAM by adopting any one or several of the following ways:
way a1, making the corresponding modulation scheme when the value of I TBS in the MCS table ranges from 23 to 26 to satisfy 256 QAM;
way a2, making the corresponding modulation scheme when the value of I TBS in the MCS table ranges from 21 to 26 to satisfy 256 QAM;
way a3, making the corresponding modulation scheme when the value of I TBS in the MCS table ranges from 27 to 30 to satisfy 256 QAM;
way a4, making the corresponding modulation scheme when the value of I TBS in the MCS table ranges from 27 to 32 to satisfy 256 QAM.
4. The method according to claim 1 , wherein step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦55, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 2·N PRB ) from the layer 1 TBS table, namely the value of layer 2 TBS;
when 56≦N PRB ≦110, on the basis of N PRB and I TBS , layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-2 TBS via the layer 1 TBS, namely the value of layer 2 TBS.
5. The method according to claim 1 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦36, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 3·N PRB ) from the layer 1 TBS table, namely the value of layer 3 TBS;
when 37≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-3 TBS via the layer 1 TBS, namely the value of layer 3 TBS.
6. The method according to claim 1 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦27, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 4·N PRB ) from the layer 1 TBS table, namely the value of layer 4 TBS;
when 28≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-4 TBS via the layer 1 TBS, namely the value of layer 4 TBS.
7. A device for transmitting data of hotspot cell coverage, comprising: an adjustment unit, an acquisition unit, and a transmission unit, wherein, the adjustment unit is configured to adjust a Modulation and Coding Scheme (MCS) table allowing the same to satisfy a 256 QAM modulation scheme;
the acquisition unit is configured to acquire a layer 1 Transport Block Size (TBS) when the modulation scheme is 256 QAM;
and the transmission unit is configured to, on the basis of N PRB , I TBS and the number of Transport Block (TB) mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
8. A base station, comprising a device for transmitting data, the device for transmitting data comprising: an adjustment unit, an acquisition unit, and a transmission unit, wherein,
the adjustment unit is configured to adjust a Modulation and Coding Scheme (MCS) table allowing the same to satisfy a 256 QAM modulation scheme;
the acquisition unit is configured to acquire a layer 1 Transport Block Size (TBS) when the modulation scheme is 256 QAM;
and the transmission unit is configured to, on the basis of N PRB , I TBS and the number of transport block mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
9. The method according to claim 2 , wherein step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦55, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 2·N PRB ) from the layer 1 TBS table, namely the value of layer 2 TBS;
when 56≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-2 TBS via the layer 1 TBS, namely the value of layer 2 TBS.
10. The method according to claim 3 , wherein step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦55, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 2·N PRB ) from the layer 1 TBS table, namely the value of layer 2 TBS;
when 56≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-2 TBS via the layer 1 TBS, namely the value of layer 2 TBS.
11. The method according to claim 2 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦36, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 3·N PRB ) from the layer 1 TBS table, namely the value of layer 3 TBS;
when 37≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-3 TBS via the layer 1 TBS, namely the value of layer 3 TBS.
12. The method according to claim 3 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦36, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 3·N PRB ) from the layer 1 TBS table, namely the value of layer 3 TBS;
when 37≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-3 TBS via the layer 1 TBS, namely the value of layer 3 TBS.
13. The method according to claim 2 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦27, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 4·N PRB ) from the layer 1 TBS table, namely the value of layer 4 TBS;
when 28≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-4 TBS via the layer 1 TBS, namely the value of layer 4 TBS.
14. The method according to claim 3 , the step of on the basis of N PRB , I TBS and the number of transport block mapping layers, determining, by the base station, the TBS currently transmitting data as described in step b, comprising:
when 1≦N PRB ≦27, finding the corresponding TBS in the layer 1 TBS table via the index (I TBS , 4·N PRB ) from the layer 1 TBS table, namely the value of layer 4 TBS;
when 28≦N PRB ≦110, on the basis of N PRB and I TBS , determining the layer 1 TBS from the layer 1 TBS table, and finding the corresponding TBS in the conversion relation of layers 1-4 TBS via the layer 1 TBS, namely the value of layer 4 TBS.