Future Wei Technologies, Inc.

Huawei Technologies Co., Limited

Diana Maamari

Weimin Xiao

Qian Cheng

George Calcev

Majid Ghanbarinejad

Jialing Liu

Hao Zhou

Anthony C K Soong

Brian Keith Classon

Philippe J Sartori

Lukasz Krzymien

A method implemented by an access node includes sending, by the access node to a user equipment (UE), an indicator indicating use of coverage enhancement technique, the indicator being sent prior to the UE achieving a radio resource control (RRC) connected state with the access node; receiving, by the access node from the UE, an uplink transmission in accordance with the indicator; and sending, by the access node to the UE, a contention resolution message in accordance with the indicator.

Methods and apparatus for coverage enhancement in wireless communication networks

A method implemented by a first device operating in a communication system includes obtaining a channel representation of a set of channels between the first device and a second device, the set of channels being over a set of subcarriers, the first device having multiple antenna ports, and the second device having one or multiple antenna ports; determining, by the first device, one or multiple communication filters in accordance with at least the channel representation; and applying, by the first device, the one or multiple communication filters to a communication on at least one of the multiple antenna ports of the first device, the communication being over the set of subcarriers.

Methods and apparatus for operating in a wideband communication system

A method for operating a communication device includes receiving a first transmission including a first signal on one or more resources associated with signal reception, deriving a receive filter in accordance with the received first transmission, deriving a transmit filter in accordance with the receive filter, precoding a second signal with the transmit filter, thereby producing a second transmission, and transmitting the second transmission.

System and method for communications system training

A method for multiple association includes associating with a first access point (AP) in a primary basic service set (BSS), associating with a second AP in a secondary BSS, informing the first and second APs of an inter-BSS relaying capability of a doubly-associated station, and relaying data between the first AP and the second AP.

System and method for inter-basic service set communications

A physical downlink shared channel (PDSCH) region of a subframe may include a reference signal (RS) section that includes one or more of a beam-scanning subsection, a transmit (TX) beam-tracking subsection, a receive (RX) beam-tracking subsection, and a channel state information (CSI) subsection. Reference signals in the TX beam-tracking subsection may be used to update TX analog beams. Reference signals in the RX beam-tracking subsection may be used to update RX analog beams. Reference signals in the beam-scanning subsection may be used to evaluate different combinations of TX and RX analog beams for use in a future directional data transmission. Reference signals in the CSI subsection may be transmitted over quasi-co-located (QCL) antenna ports, and may be used for purposes of channel estimation.

Systems and methods for UE-specific beam management for high frequency wireless communication

An embodiment method for beam-related information and channel state information feedback includes receiving first analog beamformed reference signals; transmitting a first report indicating a set of selected analog beamformed reference signals and a transmission rank that jointly maximize a first performance criterion for subsequent transmissions by a transmitter that transmitted the first analog beamformed reference signals; receiving second analog beamformed reference signals maximized in accordance with the set of selected analog beamformed reference signals and the transmission rank; and transmitting a second report, in accordance with the second analog beamformed reference signals, indicating a channel quality indicator and a precoding matrix indicator that maximize a second performance criterion for subsequent transmissions by the transmitter that transmitted the first analog beamformed reference signals and the second analog beamformed reference signals.

System and method for hierarchal beamforming and rank adaptation for hybrid antenna architecture

A method for channel reservation and communication using carrier sense multiple access (CSMA) with directional antennas in a wireless network. A source station (STA) may transmit a directional request to send (RTS) frame to a destination station before a data transmission. Upon receipt of the RTS frame, the destination STA may transmit a transmit network allocation vector (TNAV) frame instructing receiving stations not to perform transmissions toward the destination STA for a predefined period of time, which may include a channel quality measurement (CQM) period. The destination STA may transmit a directional clear-to-send (CTS) frame when channel quality estimated during the CQM meets a criterion. The source STA may then transmit a directional data transmission to the destination STA upon receipt of the CTS frame.

System and method for spatial reuse in directional random access

A method for beamforming training is disclosed including SNR values with each of the SNR values associated with one of the antenna identifiers (IDs) in a first frame identifying different radio frequency (RF) chains for a process of beamforming training; receiving and transmitting the first frame bi-directionally between multiple pairs of communicating nodes, wherein each pair of the communicating nodes has at least one initiator node and one responder node; receiving feedback of the SNRs associated with the antenna IDs from two or more responder nodes of the multiple pairs of the communicating nodes to choose an RF chain as favorable transmit antenna for transmission; and determining respective one from the multiple antenna sectors of the multiple antennas for transmission for the responder nodes according to the feedback. A central network controller and a system are also disclosed herein.

Method and apparatus for multiuser MIMO beamforming training

A method and apparatus for wireless communications for relay communication are provided. The method includes a source node sets up one or more backup relay links between the source node and a destination node that comprises a route through one or more standby relay nodes; transmits a first frame to the one or more standby relay nodes to activate the one or more standby relay nodes, transmits a second frame from the source node to the destination node informing the destination node of a switch of the relay link. Apparatuses are provided thereof.

Growing community of inventors

Palatine, IL, United States of America

Diana Maamari