Back to results
US 2018/0006694 A1Published application
System and Method for Feeding Back Channel Information
AssigneeFuturewei Technologies, Inc.
InventorsPengfei Xia, Qiang Wu, David Jean-Marie Mazzarese, Yongxing Zhou, Yang Tang
Life of this patent
Estimating the term…
Abstract
A system and method for feeding back channel information are provided. A method for communications device operations includes generating feedback information, encoding the feedback information to produce a feedback payload, and transmitting the feedback payload to a communications server serving a communications device. The feedback information includes at least a first long term wideband channel statistics and a second long term wideband channel statistics.
Claims31
A method comprising:
- jointly encoding, by a communications device, rank indicator (RI) information and a precoding matrix indicator (PMI);
- generating, by the communications device, feedback information comprising at least wideband channel statistics (“WCS”) and long term wideband channel statistics (“LTWCS”), the LTWCS comprising the RI information, the WCS comprising the PMI, and the PMI being a part of a codebook used to quantize the LTWCS;
- encoding, by the communications device, the feedback information to produce a feedback payload;
- and
- transmitting, by the communications device, the feedback payload to a communications server serving the communications device.
2 more elements
A method comprising:
- receiving, by a communications controller, a feedback payload from a communications device;
- decoding, by the communications controller, the feedback payload with a feedback decoder to produce feedback information, the feedback information comprising at least wideband channel statistics (“WCS”) and long term wideband channel statistics (“LTWCS”), the LTWCS comprising rank indicator (RI) information, the WCS comprising a precoding matrix indicator (PMI), and the PMI being a part of a codebook used to quantize the LTWCS;
- jointly decoding, by the communications controller, the RI and the PMI;
- and
- precoding, by the communications controller, a transmission in accordance with the LTWCS and the WCS.
2 more elements
A communications device comprising:
- a receiver configured for receiving a communications channel between the communications device and a communications controller serving the communications device;
- a processor operatively coupled to the receiver and configured for:
- estimating the communications channel;
- jointly encoding rank indicator (RI) information and a precoding matrix indicator (PMI);
- generating feedback information comprising at least wideband channel statistics (“WCS”) and long term wideband channel statistics (“LTWCS”), the LTWCS comprising the RI information, the WCS comprising the PMI, and the PMI being a part of a codebook used to quantize the LTWCS;
- and
- a transmitter operatively coupled to the processor and configured for transmitting the feedback payload to the communications controller.
4 more elements
A communications controller comprising:
- a receiver configured for receiving a feedback payload from a communications device;
- a processor operatively coupled to the receiver and configured for
- decoding the feedback payload with a feedback decoder to produce feedback information, the feedback information comprising at least wideband channel statistics (“WCS”) and long term wideband channel statistics (“LTWCS”), the LTWCS comprising rank indicator (RI) information, the WCS comprising a precoding matrix indicator (PMI), and the PMI being a part of a codebook used to quantize the LTWCS;
- jointly decoding the RI and the PMI;
- and
- precoding a transmission in accordance with the LTWCS and the WCS;
- and
- a transmitter operatively coupled to the processor and configured for transmitting the transmission to the communications device.
5 more elements
Dependencies are inferred from the claim text.