Multi-rank precoding matrix indicator (PMI) feedback in a multiple-input multiple-output (MIMO) system

R Chen, EN Onggosanusi - US Patent 8,526,519, 2013 - Google Patents
In at least some embodiments, a system includes a multiple input multiple-output (MIMO)
base station and a plurality of MIMO user equipment (UE) devices in communication with the …

System and method for channel information feedback in a wireless communications system

P Xia, Y Tang, Z Rong, L Chen - US Patent 8,649,456, 2014 - Google Patents
A system and method for channel information feedback in a wireless communications
system is provided. A method for communications device operation includes receiving a pilot …

Method of transforming pre-coded signals for multiple-in-multiple-out wireless communication

FC Cheng, MPJ Baker - US Patent 8,675,762, 2014 - Google Patents
The present invention provides a method of transforming pre-coded signals for transmission
over an air interface in a MIMO wireless communication system. Embodiments of the method …

Multi-cell signals in OFDM wireless networks

EH Dinan - US Patent 10,085,165, 2018 - Google Patents
A wireless device receives messages indicating CSI measurement resources of cells
belonging to at least two base stations or belonging to at least two sectors of a base station …

Adaptive multiple antenna transmission method and apparatus in accordance with antenna transmission power in a wireless communication system

HS Ko, MI Lee, JH Koo, JH Chung, BC Ihm - US Patent 8,971,426, 2015 - Google Patents
The present invention relates to a wireless communication system, and an adaptive multiple
antenna transmission method and apparatus in accordance with antenna transmission …

Beam information exchange between base stations

EH Dinan - US Patent 9,419,696, 2016 - Google Patents
A base station receives a message comprising at least one index identifying a subset of a
second plurality of beamforming codewords. Each of the second plurality of beamforming …

Beam information exchange between base stations

EH Dinan - US Patent 9,112,564, 2015 - Google Patents
A base station receives a message comprising at least one index identifying a subset of a
second plurality of beamforming codewords. Each of the second plurality of beamforming …

Handover signaling for beamforming communications

EH Dinan - US Patent 9,917,625, 2018 - Google Patents
According to one or more aspects, a wireless device may transmit a message to a serving
base station comprising parameters indicating that the wireless device supports …

Beamforming handover messaging in a wireless network

EH Dinan - US Patent 10,236,956, 2019 - Google Patents
Jul. 12, 2015, now Pat. No. 9, 450, 656, which is a continuation of application No. 14/705,
497, filed on May 6, 2015, now Pat. No. 9, 131, 414, which is a continuation of application …

Beamforming handover messaging in a wireless network

EH Dinan - US Patent 9,917,624, 2018 - Google Patents
According to one or more aspects, a serving base station may transmit a message to a target
base station based on a handover decision for a wireless device. The message may include …