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US 11,606,793 B2Granted
Control channel in a wireless communication system
AssigneeComcast Cable Communications, LLC
InventorEsmael Hejazi Dinan
Life of this patent
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Abstract
A base station receives channel state information from a wireless device. The base station transmits to the wireless device one or more data packets on a data channel employing a first precoding matrix identifier. The base station transmits one or more control packets on a control channel to the wireless device employing a second precoding matrix.
Claims32
A system comprising:
- a base station and a wireless device,
- wherein the base station comprises:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the base station to:
- receive, from the wireless device, channel state information (CSI) comprising a precoding matrix indicator;
- determine, based on the precoding matrix indicator:
- a first precoding matrix for precoding a downlink data channel for the wireless device;
- and
- a second precoding matrix for precoding a downlink control channel for the wireless device, wherein the second precoding matrix is different from the first precoding matrix, and wherein the downlink control channel is associated with the downlink data channel;
- transmit, in a subframe:
- the downlink data channel using the first precoding matrix;
- and
- at least one first reference signal associated with the downlink data channel;
- and
- transmit, in the subframe:
- the downlink control channel using the second precoding matrix;
- and
- at least one second reference signal associated with the downlink control channel, and
- wherein the wireless device comprises:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to transmit the CSI and receive the downlink data channel and the downlink control channel.
20 more elements
A method comprising:
- transmitting, by a wireless device and to a base station, channel state information (CSI) comprising a precoding matrix indicator;
- receiving, in a subframe:
- a downlink data channel that is precoded using a first precoding matrix that is based on the precoding matrix indicator;
- and
- at least one first reference signal associated with the downlink data channel;
- and
- receiving, in the subframe:
- a downlink control channel that is associated with the downlink data channel and that is precoded using a second precoding matrix that is based on the precoding matrix indicator;
- and
- at least one second reference signal associated with the downlink control channel.
7 more elements
A wireless device comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
- transmit, to a base station, channel state information (CSI) comprising a precoding matrix indicator;
- receive, in a subframe:
- a downlink data channel that is precoded using a first precoding matrix that is based on the precoding matrix indicator;
- and
- at least one first reference signal associated with the downlink data channel;
- and
- receive, in the subframe:
- a downlink control channel that is associated with the downlink data channel and that is precoded using a second precoding matrix that is based on the precoding matrix indicator;
- and
- at least one second reference signal associated with the downlink control channel.
10 more elements
Dependencies are inferred from the claim text.