Beamforming signaling in a wireless network
First Claim
1. 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;
receiving, based on the at least one information element, first signals from the first base station and second signals from a second base station;
computing a precoding matrix indicator (PMI) based at least in part on the first signals received from the first base station and the second signals received from the second base station;
transmitting channel state information comprising the computed PMI to the first base station; and
receiving, from the first base station, at least one data packet beamformed according to a precoding matrix associated with the computed PMI.
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Accused Products
Abstract
Methods, apparatus, and systems for wireless communications are described. A first base station may be configured to transmit a measurement information message to a wireless device. The measurement information message may comprise at least one information element, wherein the at least one information element indicates one or more first resource blocks corresponding to first signals associated with the first base station and one or more second resource blocks corresponding to second signals associated with a second base station. The wireless device may compute a precoding matrix indicator (PMI) based at least in part on first signals received from the first base station and second signals received from the second base station. The wireless device may transmit channel state information comprising the computed PMI to the first base station. The first base station may transmit at least one data packet beamformed according to a precoding matrix associated with the computed PMI.
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Citations
40 Claims
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1. A method for use in a wireless device, the method comprising:
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receiving, from a first base station, a measurement information message comprising at least one information element; receiving, based on the at least one information element, first signals from the first base station and second signals from a second base station; computing a precoding matrix indicator (PMI) based at least in part on the first signals received from the first base station and the second signals received from the second base station; transmitting channel state information comprising the computed PMI to the first base station; and receiving, from the first base station, at least one data packet beamformed according to a precoding matrix associated with the computed PMI. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless device comprising:
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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 comprising at least one information element; receive, based on the at least one information element, first signals from the first base station and second signals from a second base station; compute a precoding matrix indicator (PMI) based at least in part on the first signals received from the first base station and the second signals received from the second base station; transmit channel state information comprising the computed PMI to the first base station; and receive, from the first base station, at least one data packet beamformed according to a precoding matrix associated with the computed PMI. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A first base station comprising:
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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 comprising at least one information element, wherein the at least one information element indicates one or more first resource blocks corresponding to first signals associated with the first base station and indicates one or more second resource blocks corresponding to second signals associated with a second base station; receive, from the wireless device, channel state information comprising a precoding matrix indicator (PMI) computed based at least in part on the first signals and the second signals; and transmit, to the wireless device, at least one data packet employing beamforming according to a precoding matrix associated with the received PMI. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method for use in a first base station, the method comprising:
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transmitting, by the first base station and to a wireless device, a measurement information message comprising at least one information element, wherein the at least one information element indicates one or more first resource blocks corresponding to first signals associated with the first base station and indicates one or more second resource blocks corresponding to second signals associated with a second base station; receiving, by the first base station and from the wireless device, channel state information comprising a precoding matrix indicator (PMI) computed based at least in part on the first signals and the second signals; and transmitting, by the first base station, at least one data packet employing beamforming according to a precoding matrix associated with the received PMI. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A system comprising:
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a wireless device, wherein the wireless device is configured to; receive, based on at least one information element received from a first base station, first signals from the first base station and second signals from a second base station; compute a precoding matrix indicator (PMI) based at least in part on the first signals received from the first base station and the second signals received from the second base station; transmit channel state information comprising the computed PMI to the first base station; and receive, from the first base station, at least one data packet beamformed according to a precoding matrix associated with the computed PMI; and the first base station, wherein the first base station is configured to; transmit, to the wireless device, a measurement information message comprising the at least one information element, wherein the at least one information element indicates one or more first resource blocks corresponding to the first signals and one or more second resource blocks corresponding to the second signals; receive, from the wireless device, the channel state information comprising the PMI computed based at least in part on the first signals and the second signals; and transmit, to the wireless device, the at least one data packet employing beamforming according to the precoding matrix associated with the received PMI. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification