Beamforming

摘要

A method implemented in a wireless communications system is disclosed. The method includes: transmitting, from a wireless transmitter having a transmit antenna array, a first signal on each of a plurality of different transmit beams in transmitter (TX) sector level sweep (SLS), receiving, at a wireless receiver having a receive antenna array, the first signal, and determining, at the wireless receiver, quality of the first signal. Other methods, systems, and apparatuses also are disclosed.

主权项

1. A method implemented in a wireless communications system, the method comprising:
transmitting, from a wireless transmitter having a transmit antenna array, a first signal on each of a plurality of different transmit beams in transmitter (TX) sector level sweep (SLS); receiving, at a wireless receiver having a receive antenna array, the first signal; determining, at the wireless receiver, quality of the first signal; transmitting, from the wireless transmitter, a second signal to allow the wireless receiver to sweep a plurality of receive beams; receiving, at the wireless receiver, the second signal on each of the plurality of receive beams; determining, at the wireless receiver, quality of the second signal; transmitting, from the wireless transmitter, an indication of direction of departure (DoD) for each of the plurality of different transmit beams; and receiving, at the wireless receiver, the indication of DoD, wherein the indication of DoD comprises an identifier (ID) of said each of the plurality of different transmit beams, wherein the first signal is received at the wireless receiver on an omni-directional receive beam or a quasi-omni directional receive beam, and wherein the second signal is transmitted from the wireless transmitter on an omni-directional transmit beam or a quasi-omni directional transmit beam.