Downlink control signalling for indication of interfering layers
AssigneeFujitsu Limited
InventorTimothy MOULSLEY
Life of this patent
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Abstract
A method of communicating a plurality of transmission layers from at least one cell which is under the control of at least one base station to a user equipment. The plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed. The data layer includes user data for the user equipment and the interference layer interferes with the data layer. The method includes determining interference layer information relating to the interference layer, transmitting the data layer, the interference layer and a control channel message to user equipment. The control channel message includes a first information field and a second information field.
Claims14
A method of communicating a plurality of transmission layers from at least one cell which is under the control of at least one base station to a user equipment, wherein the plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed, wherein the data layer comprises user data for the user equipment and the interference layer interferes with the data layer, the method comprising:
- Determining, by the base station, data layer information relating to the data layer and interference layer information relating to the interference layer,
- transmitting, by the base station, the data layer, the interference layer and a control channel message to the user equipment,
- wherein the control channel message comprises a first information field including said data layer information relating to the data layer and a second information field including said interference layer information relating to the interference layer, and
- processing the data layer in accordance with said data layer information and processing the interference layer in accordance with the interference layer information for obtaining the user data at the user equipment,
- wherein the first information field of the control channel message comprises a first codeword field including said data layer information and transmitted at least in part on the data layer, and
- wherein the second information field of the control channel message comprises a second codeword field including the interference layer information and transmitted at least in part on a further data layer of the plurality of transmission layers.
A control unit for controlling a communication of a plurality of transmission layers from at least one cell which is under the control of at least one base station to a user equipment, wherein the plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed, wherein the data layer comprises user data for the user equipment and the interference layer interferes with the data layer, the control unit comprising:
- an interference layer information determining unit for determining data layer information relating to the data layer and interference layer information relating to the interference layer, and
- a transmission control unit for causing transmitting the data layer, the interference layer and a control channel message to the user equipment, wherein the control channel message comprises a first information field including said data layer information and a second information field including said interference layer information relating to the interference layer,
- wherein the first information field of the control channel message comprises a first codeword field including said data layer information and transmitted at least in part on the data layer, and
- wherein the second information field of the control channel message comprises a second codeword field including the interference layer information and transmitted at least in part on a further data layer of the plurality of transmission layers.
A user equipment for receiving a plurality of transmission layers from at least one cell which is under the control of at least one base station, wherein the plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed, wherein the data layer comprises user data for the user equipment and the interference layer interferes with the data layer, the user equipment comprising:
- a receiving unit for receiving the data layer, the interference layer and a control channel message, wherein the control channel message comprises a first information field including data layer information relating to the data layer and a second information field including interference layer information relating to the interference layer, and
- a processing unit for processing the data layer in accordance with the data layer information and for processing the interference layer in accordance with the interference layer information for obtaining the user data at the user equipment,
- wherein the first information field of the control channel message comprises a first codeword field including at least a part of said data layer information and received on the data layer, and
- wherein the second information field of the control channel message comprises a second codeword field including at least a part of the interference layer information and received on a further data layer of the plurality of transmission layers.
A communication system for communicating a plurality of transmission layers from at least one cell which is under the control of at least one base station to a user equipment, wherein the plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed, wherein the data layer comprises user data for the user equipment and the interference layer interferes with the data layer, the communication system comprising:
- an interference layer information determining unit of the base station for determining data layer information relating to the data layer and interference layer information relating to the interference layer,
- a transmission control unit for causing transmitting by the base station of the data layer, the interference layer and a control channel message to the user equipment, wherein the control channel message comprises a first information field including said data layer information and a second information field including said interference layer information relating to the interference layer, and
- a processing unit for processing the data layer in accordance with said data layer information and for processing the interference layer in accordance with said interference layer information for obtaining the user data at the user equipment,
- wherein the first information field of the control channel message comprises a first codeword field including said data layer information and transmitted at least in part on the data layer, and
- wherein the second information field of the control channel message comprises a second codeword field including the interference layer information and transmitted at least in part on a further data layer of the plurality of transmission layers in a second mode.
Dependencies are inferred from the claim text.