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US 9,871,618 B2Granted
Information transmission method and device
AssigneeHuawei Technologies Co., Ltd.
InventorsJianbing Yang, Yang Li, Xingqing Cheng, Lei Wan
Life of this patent
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Abstract
An information transmission method and device is provided. The method includes: reporting, by a UE, a CQI value to an eNB; receiving, by the UE, an MCS value sent by the eNB, where the MCS value is determined by the eNB according to the CQI value; and receiving, by the UE, PDSCH data according to the MCS value, where the CQI value and the MCS value are determined according to a second set of tables, where a modulation scheme that can be supported by the second set of tables is higher than 64QAM.
Claims20
An information transmission method, comprising:
- sending, by a user equipment (UE), control signaling to an eNodeB (eNB), wherein the sent control signaling is used to indicate that the UE supports a second set of tables including a second modulation and coding scheme (MCS) table and a second channel quality indicator (CQI) table, wherein a modulation scheme that can be supported by the second set of tables is higher than 64QAM, wherein the UE also supports a first set of tables including a first MCS table different from the second MCS table and a first CQI table different from the second CQI table;
- receiving, by the UE, control signaling sent by the eNB, wherein the received control signaling is used to indicate use of the second set of tables;
- determining, by the UE, a CQI value by using the second CQI table;
- reporting, by the UE, the CQI value to the eNB, wherein the CQI value is for the eNB to determine an MCS value according to the CQI value;
- receiving, by the UE, the MCS value sent by the eNB;
- and
- receiving, by the UE, physical downlink shared channel (PDSCH) data according to the MCS value;
- wherein:
- some entries in the second set of tables are the same as those in the first set of tables;
- the number of CQI indexes of the second CQI table is the same as that in the first CQI table;
- and
- the number of MCS indexes of the second MCS table is the same as that in the first MCS table, and the second MCS table comprises MCS index entries reserved for hybrid automatic repeat request (HARQ) retransmission of a modulation scheme higher than 64QAM;
- spectral efficiency in the second CQI table meets the following condition:
- in any modulation scheme whose modulation order is higher than 2, differences between two adjacent spectral efficiency values are approximately equal, wherein a being approximately equal to b means that an absolute value of a difference between a and b is less than a set value.
11 more elements
An information transmission device, comprising:
- a second sending module, configured to send control signaling to an eNodeB (eNB), wherein the sent control signaling is used to indicate that the device supports a second set of tables including a second modulation and coding scheme (MCS) table and a second channel quality indicator (CQI) table, wherein a modulation scheme that can be supported by the second set of tables is higher than 64QAM, and wherein the device also supports a first set of tables including a first MCS table different from the second MCS table and a first CQI table different from the second CQI table;
- a third receiving module, configured to receive control signaling sent by the eNB, wherein the received control signaling is used to indicate use of the second set of tables;
- a first sending module, configured to determine a CQI value by using the second CQI table, and report the CQI value to the eNB, wherein the CQI value is for the eNB to determine an MCS value according to the CQI values;
- a first receiving module, configured to receive the MCS value sent by the eNB;
- and
- a second receiving module, configured to receive physical downlink shared channel (PDSCH) data according to the MCS value;
- wherein:
- some entries in the second set of tables are the same as those in the first set of tables;
- the number of CQI indexes of the second CQI table is the same as that in the first CQI table;
- the number of MCS indexes of the second MCS table is the same as that in the first MCS table, and the second MCS table comprises MCS index entries reserved for hybrid automatic repeat request (HARQ) retransmission of a modulation scheme higher than 64QAM;
- spectral efficiency in the second CQI table meets the following condition:
- in any modulation scheme whose modulation order is higher than 2, differences between two adjacent spectral efficiency values are approximately equal, wherein a being approximately equal to b means that an absolute value of a difference between a and b is less than a set value.
9 more elements
A non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions, when executed, facilitating performance of a data transmission method, the data transmission method comprising:
- sending, by a user equipment (UE), control signaling to an eNodeB (eNB), wherein the sent control signaling is used to indicate that the UE supports a second set of tables including a second modulation and coding scheme (MCS) table and a second channel quality indicator (CQI) table, wherein a modulation scheme that can be supported by the second set of tables is higher than 64QAM, wherein the UE also supports a first set of tables including a first MCS table different from the second MCS table and a first CQI table different from the second CQI table;
- receiving, by the UE, control signaling sent by the eNB, wherein the received control signaling is used to indicate use of the second set of tables;
- determining, by the UE, a CQI value by using the second CQI table;
- reporting, by the UE, the CQI value to the eNB, wherein the CQI value is for the eNB to determine an MCS value according to the CQI value;
- receiving, by the UE, the MCS value sent by the eNB;
- and
- receiving, by the UE, physical downlink shared channel (PDSCH) data according to the MCS value;
- wherein:
- some entries in the second set of tables are the same as those in the first set of tables;
- the number of CQI indexes of the second CQI table is the same as that in the first CQI table;
- and
- the number of MCS indexes of the second MCS table is the same as that in the first MCS table, and the second MCS table comprises MCS index entries reserved for hybrid automatic repeat request (HARQ) retransmission of a modulation scheme higher than 64QAM;
- spectral efficiency in the second CQI table meets the following condition:
- in any modulation scheme whose modulation order is higher than 2, differences between two adjacent spectral efficiency values are approximately equal, wherein a being approximately equal to b means that an absolute value of a difference between a and b is less than a set value.
11 more elements
Dependencies are inferred from the claim text.