Patent Grant
9210693
The disclosure relates to a mobile communication field, and particularly to a method, device and base station for transmitting data of hotspot cell coverage.
Long Term Evolution Advanced (LTE-A) system, as the standard evolution of Long Term Evolution (LTE) system, proposes enhanced Multiple Input Multiple Output (MIMO) technology, which can support a maximum of 8×8 downlink antenna configuration and improve coverage and throughput on cell edge.
LTE-A requires 4 G communication not only to meet high peak rates and large bandwidth, but also to ensure experience of users at all regions. As statistics show that 80%-90% of the throughput of the system will occur in the interior and hotspot nomadic scenarios, the interior high-speed hotspot will become more important application scenario to the mobile internet.
In wireless communication, the sender uses multiple antennas, and adopts spatial multiplexing approach to improve the transmission rate, and the receiver, such as User Terminal (UE), also uses multiple antennas. As the number of antennas increases, the channel rank also increases, and the number of layers for transmitting data also increases correspondingly. In LTE, each TB (Transport Block) can only transmit on two layers, while LTE-A supports each TB to transmit on up to four layers.
In release R10, layers 1-4 of TBS (Transport Block Size) is found by way of looking up MCS table, wherein, layer 1 TBS is jointly determined by taking ITBS (Index Transport Block Size) as index row and taking NPRB (Num Physical Resource Block) as index column. For layer 2 of TB size, i.e., TBS, when 1≦NPRB≦55, the corresponding TBS in layer 1 TBS table is found via the index (ITBS, 2·NPRB) from layer 1 TBS table, namely the value of layer 2 TBS; when 56≦NPRB≦110, NPRB and ITBS of layer 2 TBS is obtained, layer 1 TBS is found by the NPRB and ITBS, and then the sized of layer 2 TBS corresponding to layer 1 TBS is found with the conversion relation table of layers 1-2.
Before performing channel coding, the mapping of layer 1 TBS to three, layer 4 TBS carries out CRC (Cyclical Redundancy Check) treatment to the transmitted data, i.e., a number of CRC data bits are added at the tail of data to determine whether the decoded data is correct at the receiving end. When transmitting a longer TB (when transport block is longer than 6144 bits), it needs to be processed in segment, and while adding the TB CRC to the TV, CRC inspection information is respectively added on the segment-processed CB. A complete transmission block, when it is longer than 6144 bits, should include the sum of TBS+TBCRC+CBCRC, wherein TBCRC is the size of the transport block CRC, CBCRC is the size of code block CRC, so it only needs to determine the value of TBS to make a TBS table.
Determine the mapped TBS through the approximate multiple relationship of layer 1 TBS to layers 2, 3 and 4 of TBS, wherein TBS_L1 represents layer 1 TBS, TBS_LN represents n layers of mapped TBS, TB1
(TBS—L1+TB1
In the cell coverage area obtained by the above formula, when the TBS<299856 bits, layers 1-4 TBS try to reuse values of layers 1-4 TBS in R10, this principle will not additionally add excess TBS, so as to facilitate transmission scheduling; when TBS_LN>299856 bits, the newly increased TBS should be divisible by QPP interleaver parameters k, increasing suitability of multi-TBS, and reducing padding.
The modulation scheme in current release can not support 256 QAM, resulting in that system throughput is insufficient, and the system transmission rate can not meet the actual demand during hotspot cell coverage. Therefore, the technical problem to be solved at present has been how to optimize the current modulation scheme for the same to support 256 QAM, and improve system throughput, thus solving the problem in hotspot cell coverage of system transmission speed not capable of satisfying actual demand.
Purpose of the embodiments of the disclosure is to provide a method, device and base station for transmitting data of hotspot cell coverage, in order to optimize modulation scheme for the same to support up to 256 QAM, and improve system throughput, thus solving the problem in hotspot cell coverage of system transmission speed not capable of satisfying actual demand.
In order to solve the technical problem described above, embodiments of the disclosure provide a method for transmitting data of hotspot cell coverage, which includes:
Step a. 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 of Transport Block Size (TBS) when the modulation scheme is 256 QAM;
Step b. on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data, and transmits data on the basis of the TBS.
Furthermore, “acquiring layer 1 of Transport Block Size (TBS) when the modulation scheme is 256 QAM” described in the step a, includes: on the basis of NPRB and ITBS, taking ITBS as index row, taking NPRB as index column, the base station looks up MCS table to acquire layer 1 TBS when the modulation scheme is 256 QAM.
Furthermore, layer 1 TBS, when the modulation scheme is 256 QAM, is acquired by adopting any one or several of the following ways:
Way a1, the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 23 to 26 is made to satisfy 256 QAM;
Way a2, the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 21 to 26 is made to satisfy 256 QAM;
Way a3, the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 27 to 30 is made to satisfy 256 QAM;
Way a4, the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 27 to 32 is made to satisfy 256 QAM.
Furthermore, “on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data” described in step b, includes: when 1≦NPRB≦55, the corresponding TBS in layer 1 TBS table is found via the index (ITBS, 2·NPRB) from layer 1 TBS table, namely the value of layer 2 TBS; when 56≦NPRB≦110, on the basis of NPRB and ITBS, layer 1 TBS is found from layer 1 TBS table, and the corresponding TBS in the conversion relation of layers 1-2 TBS is found by layer 1 TBS, namely the value of layer 2 TBS.
Furthermore, “on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data” described in step b, includes: when 1≦NPRB≦36, the corresponding TBS in layer 1 TBS table is found via the index (ITBS, 3·NPRB) from layer 1 TBS table, namely the value of layer 3 TBS; when 37≦NPRB≦110, on the basis of NPRB and ITBS, layer 1 TBS is determined from layer 1 TBS table, and the corresponding TBS in the conversion layer 4 TBS of layers 1-3 TBS is found by layer 1 TBS, namely the value of layer 3 TBS.
Furthermore, “on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data” described in step b, includes: when 1≦NPRB≦27, the corresponding TBS in layer 1 TBS table is found via the index (ITBS, 4·NPRB) from layer 1 TBS table, namely the value of layer 4 TBS; when 28≦NPRB≦110, on the basis of NPRB and ITBS, layer 1 TBS is determined from layer 1 TBS table, and the corresponding TBS in the conversion layer 4 TBS of layers 1-4 TBS is found by layer 1 TBS, namely the value of layer 4 TBS.
Embodiments of the disclosure also provide a device for transmitting data of hotspot cell coverage, which includes an adjustment unit, an acquisition unit, and a transmission unit, wherein, the adjustment unit is configured to adjust a MCS table allowing the same to satisfy a 256 QAM modulation scheme; the acquisition unit is configured to acquire layer 1 TBS when the modulation scheme is 256 QAM; and the transmission unit is configured to, on the basis of NPRB, ITBS and the number of TB mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
Embodiments of the disclosure also provide a base station, which includes a device for transmitting data. The device for transmitting data includes an adjustment unit, an acquisition unit, and a transmission unit, wherein, the adjustment unit is configured to adjust a MCS table allowing the same to satisfy a 256 QAM modulation scheme; the acquisition unit is configured to acquire layer 1 TBS when the modulation scheme is 256 QAM; and the transmission unit is configured to, on the basis of NPRB, ITBS and the number of TB mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
Comparing with the prior art, the method, device and base station for transmitting data of hotspot cell coverage provided in embodiments of the disclosure, can optimize modulation scheme for the same to support up to 256 QAM, and improve system throughput, thus solving the problem in hotspot cell coverage of system transmission speed not capable of satisfying actual demand.
Accompanying drawings described herein, which are included to provide a further understanding of the disclosure and constitute a part of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but the disclosure is not limited thereto. In the accompanying drawings:
To make the technical problem to be solved by the disclosure, the technical solution and the beneficial effect more clear and apparent, the disclosure will be described in more detail below with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only to explain the disclosure and are not intended to limit the disclosure.
Embodiments of the disclosure provides a method for transmitting data of hotspot cell coverage, with a technical solution as follows: the base station adjusts MCS table allowing the same to satisfy a 256 QAM modulation scheme, and determines layer 1 TBS, and then determines the conversion relation of layers 1-2, layers 1-3 and layers 1-4 TBS in layer 1 of newly increased TBS; the TBS currently transmitting data is determined via the number of TB transmission layers with the TB conversion relation table, and data is transmitted on the basis of the TBS.
As shown in
step a. a base station adjusts a MCS table allowing the same to satisfy a 256 QAM modulation scheme, and acquires layer 1 TBS when the modulation scheme is 256 QAM;
step b. on the basis of NPRB, ITBS and the number of TB mapping layers, the base station determines the TBS currently transmitting data, and transmits data on the basis of the TBS.
In step a, on the basis of NPRB and ITBS, taking ITBS as index row, taking NPRB as index column, the base station looks up the adjusted MCS table to acquire layer 1 TBS (including layer 1 TBS when the modulation scheme is 256 QAM). And layer 1 TBS when the modulation scheme is 256 QAM is acquired by adopting any one or several of the following ways:
Way a1, during hotspot cell coverage, the corresponding ITBS of the existing MCS table is appropriately adjusted, and the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 23 to 26 is made to satisfy 256 QAM, wherein, levels of the ITBS level number is the same with levels of the existing standard (3GPP TS 36.213 V10.0.1). Specific method is as follows:
The corresponding TBS values when values of ITBS are 7, 13, 21 and 23 in TBS table of the corresponding ITBS of the existing MCS table are deleted, and then the corresponding TBS of the rest of ITBS to the corresponding TBS when value of ITBS ranges from 0 to 22 during hotspot cell coverage are mapped one by one; and the corresponding modulation scheme when value of ITBS ranges from 23 to 26 in MCS table is made to satisfy 256 QAM. The new adjusted MCS table is as shown in table below:
By taking ITBS as index row and taking NPRB as index column, layer 1 TBS when the modulation scheme is 256 QAM is acquired by looking up the above MCS table.
Furthermore, the corresponding value of newly increased TBS when the value of ITBS ranges from 23 to 26 is acquired by adopting manners including any one or several of the following manners:
When ITBS is equal to 23, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
Way a2, during hotspot cell coverage, the corresponding ITBS of the existing MCS table are appropriately adjusted, and the corresponding modulation scheme when the value of ITBS ranges from 21 to 26 is made to satisfy 256 QAM, wherein, the ITBS level number is the same with levels of the existing standard. Specific method is as follows:
The corresponding TBS values when values of ITBS are 3, 7, 11, 13, 21 and 23 in TBS table of the corresponding ITBS of the existing MCS table are deleted, and then the corresponding TBS of the rest of ITBS to the corresponding TBS when value of ITBS ranges from 0 to 22 during hotspot cell coverage are mapped one by one; and the corresponding modulation scheme when value of ITBS ranges from 21 to 26 in MCS table is made to satisfy 256 QAM. The new adjusted MCS table is as shown in table below:
By taking ITBS as index row and taking NPRB as index column, layer 1 TBS when the modulation scheme is 256 QAM is acquired by looking up the above MCS table.
The corresponding value of newly increased TBS when the value of ITBS ranges from 21 to 26 are acquired by adopting manners including any one or several of the following manners:
When ITBS is equal to 21, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 21, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 22, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 23, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 24, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 25, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 26, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
Way a3, during hotspot cell coverage, the corresponding ITBS of the existing MCS table are appropriately adjusted, and the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 27 to 30 is made to satisfy 256 QAM, wherein, the ITBS level number increases four levels than the existing standard. Specific method is as follows:
The existing standard TBS table is increased for four levels, with the corresponding level number in the existing MCS table increasing four levels accordingly, the value of new MCS ranging from 27 to 30, and the corresponding modulation scheme when value of ITBS ranges from 27 to 30 in MCS table is made to satisfy 256 QAM. The new adjusted MCS table is as shown in table below:
By taking ITBS as index row and taking NPRB as index column, layer 1 TBS when the modulation scheme is 256 QAM is acquired by looking up the above MCS table.
The corresponding value of newly increased TBS when the value of ITBS ranges from 27 to 30 is acquired by adopting manners including any one or several of the following manners:
When ITBS is equal to 27, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
Way a4, during hotspot cell coverage, the corresponding ITBS of the existing MCS table are appropriately adjusted, and the corresponding modulation scheme when the value of ITBS in the MCS table ranges from 27 to 32 is made to satisfy 256 QAM, wherein, the ITBS level number increases six levels than the existing standard. Specific method is as follows:
The existing standard TBS table is increased for six levels, with the corresponding level number in the existing MCS table increasing six levels accordingly, the value of new MCS ranging from 27 to 32, and the corresponding modulation scheme when value of ITBS ranges from 27 to 32 in MCS table is made to satisfy 256 QAM. The new adjusted MCS table is as shown in table below:
By taking ITBS as index row and taking NPRB as index column, layer 1 TBS when the modulation scheme is 256 QAM is acquired by looking up the above MCS table.
The corresponding value of newly increased TBS when the value of ITBS ranges from 27 to 32 is acquired by adopting manners including any one or several of the following manners:
When ITBS is equal to 27, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 27, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 28, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 29, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 30, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 31, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 1≦NPRB≦10, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 11≦NPRB≦20, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 21≦NPRB≦30, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 31≦NPRB≦40, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 41≦NPRB≦50, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 51≦NPRB≦60, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 61≦NPRB≦70, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 71≦NPRB≦80, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 81≦NPRB≦90, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 91≦NPRB≦100, values of layer 1 TBS are as follows:
When ITBS is equal to 32, and 101≦NPRB≦110, values of layer 1 TBS are as follows:
Step b, on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data, and transmits data on the basis of the TBS. Specific method is as follows:
b1, the value of layer 2 TBS, i.e., conversion relation of layers 1-2 TBS is determined;
When 1≦NPRB≦55, the corresponding TBS in layer 1 table via the index (ITBS, 2·NPRB) is found from layer 1 TBS table, which is the value of layer 2 TBS.
When 56≦NPRB≦110, there is the following mapping relation from layer 1 of newly increased TBS, wherein TBS_L1 represents layer 1 TBS, and TBS_L2 represents layer 2 TBS:
b2, the value of layer 3 TBS, i.e., conversion relation of layers 1-3 TBS is determined;
When 1≦NPRB≦36, the corresponding TBS in layer 1 table is found via the index (ITBS, 3·NPRB) from layer 1 TBS table, which is the value of layer 3 TBS.
When 37≦NPRB≦110, there is the following mapping relation from layer 1 of newly increased TBS, wherein TBS_L1 represents layer 1 TBS, and TBS_L2 represents layer 3 TBS:
b3, the value of layer 3 TBS, i.e., conversion relation of layers 1-4 TBS is determined;
When 1≦NPRB≦27, the corresponding TBS in layer 1 table via the index (ITBS, 4·NPRB) is found from layer 1 TBS table, which is the value of layer 4 TBS.
When 28≦NPRB≦110, there is the following mapping relation from layer 1 of newly increased TBS, wherein TBS_L1 represents layer 1 TBS, and TBS_L2 represents layer 4 TBS:
b4, on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data, and transmits data on the basis of the TBS;
Said “on the basis of NPRB, ITBS and the number of transport block mapping layers, the base station determines the TBS currently transmitting data” includes: determine the TBS currently transmitting data on the basis of the conversion relation, specifically,
When 1≦NPRB≦55, the corresponding TBS in layer 1 table is found via the index (ITBS, 2·NPRB) from layer 1 TBS table, namely the value of layer 2 TBS; when 56≦NPRB≦110, layer 1 TBS from layer 1 TBS table on the basis of NPRB, ITBS is determined, namely, the value of layer 2 TBS;
When 1≦NPRB≦36, the corresponding TBS in layer 1 table is found via the index (ITBS, 3·NPRB) from layer 1 TBS table, namely the value of layer 3 TBS; when 36≦NPRB≦110, layer 1 TBS from layer 1 TBS table on the basis of NPRB, ITBS is determined, namely the value of layer 3 TBS;
When 1≦NPRB≦27, the corresponding TBS in layer 1 table is found via the index (ITBS, 4·NPRB) from layer 1 TBS table, which is the value of layer 4 TBS; when 28≦NPRB≦110, layer 1 TBS from layer 1 TBS table on the basis of NPRB, ITBS is determined, which is the value of layer 4 TBS.
Embodiment of the disclosure also provides a device for transmitting data, which include: an adjustment unit, an acquisition unit, and a transmission unit, wherein,
the adjustment unit is configured to adjust a MCS table allowing the same to satisfy a 256 QAM modulation scheme;
the acquisition unit is configured to acquire layer 1 TBS when the modulation scheme is 256 QAM;
and the transmission unit is configured to, on the basis of NPRB, ITBS and the number of TB mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
Embodiments of the disclosure also provide a base station, which includes a device for transmitting data. The device for transmitting data includes an adjustment unit, an acquisition unit, and a transmission unit, wherein,
the adjustment unit is configured to adjust a MCS table allowing the same to satisfy a 256 QAM modulation scheme;
the acquisition unit is configured to acquire layer 1 TBS when the modulation scheme is 256 QAM;
and the transmission unit is configured to, on the basis of NPRB, ITBS and the number of transport block mapping layers, determine the TBS currently transmit data, and transmit data on the basis of the TBS.
Specific implementation of each module has been well described in the method as such no further description is provided herein.
How to utilize the method of the disclosure to determine the block size of TB by several examples will specifically illustrated below.
For example, for the determination of layer 1 TBS when the ITBS=23 and NPRB=5, by looking up layer 1 ITBS=23 and NPRB=5, we can know that layer 1 TBS equals 4008 bits by table look-up.
For example, for the determination of layer 1 TBS when the ITBS=26 and NPRB=101, by looking up layer 1 ITBS=26 and NPRB=101, we can know that layer 1 TBS equals 101840 bits by table look-up.
For example, for the determination of layer 1 TBS when the ITBS=28 and NPRB=41, by looking up layer 1 ITBS=28 and NPRB=41, we can know that layer 1 TBS equals 36696 bits by table look-up.
For example, for the determination of layer 1 TBS when the ITBS=31 and NPRB=110, by looking up layer 1 ITBS=31 and NPRB=110, we can know that layer 1 TBS equals 110136 bits by table look-up.
For example, for the determination of layer 2 when ITBS=26 and NPRB=108, first, find the TBS value when layer 1 ITBS=26 and NPRB=108, we can know layer 1 TBS equals 87936 bits by table look-up.
According to the conversion relation table of layers 1-2 TBS, select the size of layer 2 TBS is 175600 bits.
For example, for the determination of layer 3 when ITBS=26 and NPRB=106, first, find the TBS value when layer 1 ITBS=26 and NPRB=106, we can know layer 1 TBS equals 105528 bits by table look-up.
According to the conversion relation table of layers 1-3 TBS, select the size of layer 3 TBS is 317064 bits.
For example, for the determination of layer 3 when ITBS=32 and NPRB=100, first, find the TBS value when layer 1 ITBS=26 and NPRB=106, we can know layer 1 TBS equals 101840 bits by table look-up.
According to the conversion relation table of layers 1-4 TBS, select the size of layer 4 TBS is 408928 bits.
The above description illustrates a preferred embodiment of the disclosure, but as aforementioned, it should be understood that the disclosure is not limited to the form disclosed herein, and should not be considered to exclude other examples, but may be used in various other combinations, modifications, and environments, and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And those modifications and variations made by those skilled in the art do not depart from the spirit and scope of the disclosure, shall all fall within the scope of the appended claims of the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011 1 0056385 | Mar 2011 | CN | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/CN2012/072041 | 3/7/2012 | WO | 00 | 9/26/2014 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2012/119549 | 9/13/2012 | WO | A |
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| 20150103760 A1 | Apr 2015 | US |
