Cross-carrier indication of uplink/downlink subframe configurations
AssigneeQUALCOMM Incorporated
InventorsWanshi CHEN, Chao WEI, Peter GAAL, Hao XU, Neng WANG
Life of this patent
Estimating the term…
Abstract
Certain aspects of the present disclosure relate to techniques for cross-carrier indication of TDD (Time Division Duplex) UL (Uplink)/DL (Downlink) subframe configuration. A UE may receive a configuration of a first index for a first cell, wherein the first index is mapped to a first position in a Downlink Control Information (DCI) message. The UE may receive the DCI message in a subframe and determine an indication of a UL/DL subframe configuration for the first cell based on the first index and the DCI message. The UE may communicate with the first cell based on the determined UL/DL subframe configuration for the first cell.
Claims30
A method for wireless communications by a User Equipment (UE), comprising:
- receiving a configuration of a first index for a first cell, wherein the first index is mapped to a first position in a Downlink Control Information (DCI) message;
- receiving the DCI message in a subframe;
- determining an indication of an uplink (UL)/downlink (DL) subframe configuration for the first cell based on the first index and the DCI message;
- communicating with the first cell based on the determined UL/DL subframe configuration for the first cell.
A method for wireless communications by a base station (BS), comprising:
- generating a Downlink control Information (DCI) message comprising uplink (UL)/downlink (DL) subframe configuration information for a set of groups of cells at different positions within the DCI message;
- and
- transmitting the DCI message to at least one UE configured to communicate using at least one of the groups of cells.
An apparatus for wireless communications by a User Equipment (UE), comprising:
- means for receiving a configuration of a first index for a first cell, wherein the first index is mapped to a first position in a Downlink Control Information (DCI) message;
- means for receiving the DCI message in a subframe;
- means for determining an indication of a uplink (UL)/downlink (DL) subframe configuration for the first cell based on the first index and the DCI message;
- means for communicating with the first cell based on the determined UL/DL subframe configuration for the first cell.
An apparatus for wireless communications by a base station (BS), comprising:
- means for generating a Downlink control Information (DCI) message comprising uplink (UL)/downlink (DL) subframe configuration information for a set of groups of cells at different positions within the DCI message;
- and
- means for transmitting the DCI message to at least one UE configured to communicate using at least one of the groups of cells.
Dependencies are inferred from the claim text.