TECHNIQUES FOR BEAM SHAPING AT A MILLIMETER WAVE BASE STATION AND A WIRELESS DEVICE AND FAST ANTENNA SUBARRAY SELECTION AT A WIRELESS DEVICE

摘要

Methods, systems, and devices are described for wireless communication at a user equipment (UE). A wireless communications system may improve UE discovery latency by dynamically selecting and switching beam forming codebooks at the millimeter wave base station and the wireless device. Selecting an optimal beam forming codebook may allow the wireless communication system to improve link margins between the base station without compromising resources. In some examples, a wireless device may determine whether the received signals from the millimeter wave base station satisfy established signal to noise (SNR) thresholds, and select an optimal beam codebook to establish communication. Additionally or alternately, the wireless device may further signal the selected beam codebook to the millimeter wave base station and direct the millimeter wave base station to adjust its codebook based on the selection.

主权项

1. A method of wireless communications, comprising:
receiving, at a wireless device, a first signal from a millimeter wave base station using a first beam codebook; dynamically determining that a second beam codebook, different from the first beam codebook, is to be used on the first signal; and transmitting a second signal to the millimeter wave base station requesting the millimeter wave base station to use the second beam codebook.