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.
Claims18
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.
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.
Dependencies are inferred from the claim text.