Downlink transmission method and user terminal equipment
AssigneeSamsung Electronics Co., Ltd.
InventorsYingyang Li, Chengjun Sun
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Abstract
The present application discloses a downlink transmission method including: 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; here, the UE reports the CQI information according to a backward compatible CQI table or a CQI table which supports 256QAM modulation; the UE receiving downlink scheduling information sent from the base station, receiving accordingly downlink data sent from the base station, here, the UE processes the MCS information according to a backward compatible MCS table or a MCS table which supports 256QAM modulation.
Claims21
A method for downlink transmission, comprising:
- reporting, by a user equipment (UE) to a base station (BS), downlink channel quality indicator (CQI) information based on a backward compatible CQI table or a CQI table which supports 256QAM modulation, wherein the backward compatible CQI table or the CQI table which supports 256QAM modulation is selected based on a state of the UE;
- and
- receiving, by the UE from the BS, downlink scheduling information configured based on the CQI information;
- receiving, by the UE from the BS, downlink data based on modulation coding scheme (MCS) information of downlink control information (DCI) included in the downlink scheduling information;
- and
- processing, by the UE, the MCS information based on a backward compatible MCS table or a MCS table which supports 256QAM modulation,
- wherein the CQI table which supports 256QAM modulation is generated by changing at least one CQI item in the backward compatible CQI table.
A user terminal equipment, comprising:
- a channel quality indicator (CQI) information measuring and reporting unit configured to measure and report downlink CQI information to a base station based on a backward compatible CQI table or a CQI table which supports 256QAM modulation, wherein the backward compatible CQI table or the CQI table which supports 256QAM modulation is selected based on a state of the UE;
- a downlink scheduling information receiving unit configured to receive, from the base station, downlink scheduling information configured based on the CQI information;
- and
- a downlink data receiving and processing unit configured to, based on modulation coding scheme (MCS) information of downlink control information (DCI) included in the downlink scheduling information, receive and process downlink data sent from the base station based on a backward compatible MCS table or a MCS table which supports 256QAM modulation,
- wherein the CQI table which supports 256QAM modulation is generated by changing at least one CQI item in the backward compatible CQI table.
Dependencies are inferred from the claim text.