Information transmission method and device
AssigneeHuawei Technologies Co., Ltd.
InventorsJianbing Yang, Yang Li, Xingqing Cheng, Lei Wan
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Abstract
Embodiments of the present invention provide an information transmission method and device. 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. The embodiments of the present invention can improve system performance and reduce waste of feedback resources.
Claims21
An information transmission method, comprising:
- receiving, by an eNodeB (eNB), a first control signaling from a user equipment (UE), wherein the first control signaling indicates 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, and wherein a modulation scheme that can be supported by the second set of tables is higher than 64QAM;
- sending, by the eNB, a second control signaling to the UE for indicating use of the second set of tables;
- receiving, by the eNB, a CQI value from the UE, wherein the CQI value is determined by the UE using the second CQI table;
- determining, by the eNB, an MCS value according to the CQI value;
- sending, by the eNB, the MCS value to the UE;
- and
- sending, by the eNB, physical downlink shared channel (PDSCH) data according to the MCS value.
An information transmission device, comprising:
- a non-transitory computer-readable storage medium storing program code;
- and
- computer hardware coupled to the non-transitory computer-readable medium and configured to execute the program code to:
- receive a first control signaling from a user equipment (UE), wherein the first control signaling indicates 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,
- send a second control signaling to the UE for indicating use of the second set of tables,
- receive a CQI value from the UE, wherein the CQI value is determined by the UE by using the second CQI table,
- determine an MCS value according to the CQI value,
- send the MCS value to the UE, and
- send physical downlink shared channel (PDSCH) data according to the MCS value.
A non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions, when executed, facilitate performance of a data transmission method comprising:
- receiving a first control signaling from a user equipment (UE), wherein the first control signaling indicates 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;
- send a second control signaling to the UE for indicating use of the second set of tables;
- receive a CQI value from the UE, wherein the CQI value is determined by the UE by using the second CQI table;
- determine an MCS value according to the CQI value;
- send the MCS value to the UE;
- and
- send physical downlink shared channel (PDSCH) data according to the MCS value.
Dependencies are inferred from the claim text.