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US 2016/0080045 A1Published application
Beamforming Signaling in a Wireless Network
AssigneeComcast Cable Communications, LLC
InventorEsmael Hejazi Dinan
Life of this patent
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Abstract
A wireless receives at least one channel state input information element (IE) from a first base station. The wireless device computes a precoding matrix indicator (PMI) employing, at least in part, the at least one channel state input IE and measurement of signals received from a second base station. The wireless device transmits the PMI to the first base station.
Claims42
A method for use in a wireless device, the method comprising:
- receiving, from a first base station, a measurement information message comprising at least one information element;
- computing a precoding matrix indicator (PMI) based at least in part on the at least one information element and on first signals received from one or more antenna ports of the first base station and second signals received from one or more antenna ports of a second base station;
- transmitting channel state information comprising the PMI to the first base station;
- and
- receiving, from the first base station, at least one data packet, beamformed according to a precoding matrix identified based on the PMI.
2 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:
- receive, from a first base station a measurement information message;
- compute a precoding matrix indicator (PMI) based at least in part on at least one information element in the measurement information message and on first signals received from one or more antenna ports of the first base station and second signals received from one or more antenna ports of a second base station;
- transmit channel state information comprising the PMI to the first base station;
- and
- receive, from the first base station, at least one data packet beamformed according to a precoding matrix identified based on the PMI.
5 more elements
A first base station comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the first base station to:
- transmit, to a wireless device, a measurement information message;
- receive, from the wireless device, channel state information comprising a precoding matrix indicator (PMI) computed based at least in part on at least one information element in the measurement information message and on first signals received from one or more antenna ports of the first base station and second signals received from one or more antenna ports of a second base station;
- and
- transmit, to the wireless device, at least one data packet employing beamforming according to a precoding matrix identified based on the PMI.
4 more elements
A method for use in a base station, the method comprising:
- transmitting, by the base station and to a wireless device, a measurement information message;
- receiving, by the base station and from the wireless device, channel state information comprising a precoding matrix indicator (PMI) computed based at least in part on at least one information element in the measurement information message and on first signals received by the wireless device from one or more antenna ports of the base station and second signals received by the wireless device from one or more antenna ports of a second base station;
- and
- transmitting, by the base station, at least one data packet employing beamforming according to a precoding matrix identified based on the PMI.
1 more element
Dependencies are inferred from the claim text.