Downlink transmission method and user terminal equipment
First Claim
1. A method for communication by a user equipment (UE) in a wireless communication system, the method comprising:
- performing measurement of a downlink channel; and
reporting information on a channel quality indicator (CQI) based on the measurement and a CQI table among a plurality of CQI tables,wherein each of the plurality of CQI tables indicates modulations and code rates for reporting the CQI,wherein the plurality of CQI tables comprises a first CQI table which supports 256 QAM and a second CQI table which does not support 256 QAM, andwherein a number of CQI indexes in the first CQI table is equal to a number of CQI indexes in the second CQI table, andwherein a CQI item of 64QAM with a highest coding rate in the second COI table is not in the first COI table.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a downlink transmission method that includes UE receiving configuration information sent form base station and accordingly adjusting CQI table and MCS table; UE measuring and reporting downlink channel quality indicator information to the base station; with the UE reporting the CQI information according to a backward compatible CQI table or a CQI table which supports 256 QAM modulation; and the UE receiving downlink scheduling information sent from the base station, receiving accordingly downlink data sent from the base station, with the UE processing the MCS information according to a backward compatible MCS table or a MCS table which supports 256 QAM modulation.
-
Citations
6 Claims
-
1. A method for communication by a user equipment (UE) in a wireless communication system, the method comprising:
-
performing measurement of a downlink channel; and reporting information on a channel quality indicator (CQI) based on the measurement and a CQI table among a plurality of CQI tables, wherein each of the plurality of CQI tables indicates modulations and code rates for reporting the CQI, wherein the plurality of CQI tables comprises a first CQI table which supports 256 QAM and a second CQI table which does not support 256 QAM, and wherein a number of CQI indexes in the first CQI table is equal to a number of CQI indexes in the second CQI table, and wherein a CQI item of 64QAM with a highest coding rate in the second COI table is not in the first COI table. - View Dependent Claims (2, 3)
-
-
4. A user equipment (UE) comprising:
-
a transceiver; and a controller coupled to the transceiver, wherein the controller is configured to; perform measurement of a downlink channel, and report information on a channel quality indicator (CQI) based on a CQI table among a plurality of CQI tables wherein each of the plurality of CQI tables indicates modulations and code rates for reporting the CQI, wherein the plurality of CQI tables comprises a first CQI table which supports 256 QAM and a second CQI table which does not support 256 QAM, and wherein a number of CQI indexes in the first CQI table is equal to a number of CQI indexes in the second CQI table, and wherein a CQI item of 64QAM with a highest coding rate in the second CQI table is not in the first CQI table. - View Dependent Claims (5, 6)
-
Specification