Telefonaktiebolaget Lm Ericsson (publ)

Lakshmikanth Guntupalli

Leif Wilhelmsson

Miguel Lopez

Dennis Sundman

Guido Roland Hiertz

Rocco Di Taranto

Naveed Butt

Mehmet Burak Guldogan

Methods are disclosed for communication devices capable of simultaneous transmission and reception, wherein a first method is for reception of a packet comprising a header and a payload and a second method is for transmission of a packet comprising a header and a payload. The second method comprises transmitting at least a part of the header. The first method comprises receiving at least a part of the header, attempting to decode the part of the header, and (when the part of the header is successfully decoded) transmitting a header acknowledgement signal. The second method comprises monitoring receipt of a header acknowledgement signal, and (when absence of the header acknowledgement signal is detected) interrupting the transmission of the packet and scheduling the packet for retransmission. Corresponding apparatuses, transceivers, communication devices and computer program products are also disclosed.

Acknowledgement for simultaneous transmission and reception

A method of a first access point and an access point arranged to provide wireless communication access for a wireless communication system are disclosed. The method comprises determining that a first station is to transmit uplink data in an uplink transmission at a first frequency band in the unlicensed spectrum, assigning a second access point for receiving the uplink transmission, wherein the second access point is covering at least an overlapping area with a coverage area of the first access point, determining a second station targeted for downlink transmission, wherein the downlink transmission is scheduled for at least partly simultaneous transmission with the uplink transmission from the first station and at least partly overlapping the first frequency band, wherein a selection of the second station targeted for downlink transmission is based on a spatial relationship between the first and second stations, assigning antenna weights for an array antenna of the first access point to provide beamforming transmission of the downlink transmission towards the second station and a null towards the second access point, and transmitting the downlink transmission using the antenna weights. The access point is arranged to perform the method.

Simultaneous uplink and downlink transmission using multiple access points

Growing community of inventors

Lund, Sweden

Lakshmikanth Guntupalli