Downlink beamforming with individual spatial stream updating

摘要

In one embodiment, a method includes allocating at a wireless network device configured for multiple spatial stream beamforming, memory for spatial stream steering vectors, wherein individual memory space is provided for each spatial stream, receiving an N spatial stream uplink packet, computing a channel estimate based on the uplink packet and generating one or more of the spatial stream steering vectors using the channel estimate, individually updating 1 through N spatial stream steering vectors, and applying the spatial stream steering vectors to signals transmitted at the wireless network device. An apparatus and logic are also disclosed.

主权项

1. A method comprising:
allocating at a wireless network device configured for multiple spatial stream beamforming, memory for spatial stream steering vectors, wherein memory space is provided individually for each spatial stream transmitted at the wireless network device in a channel; receiving an N spatial stream uplink packet at the wireless network device, wherein the uplink packet does not fully sound said channel; storing 1 through N spatial streams individually in said memory space for said 1 through N spatial streams so that said spatial stream steering vectors can be individually updated based on an uplink packet sounding; computing a channel estimate based on said uplink packet and generating one or more of said spatial stream steering vectors using said channel estimate; individually updating said 1 through N spatial stream steering vectors based on the number of spatial streams in said uplink packet; and applying said spatial stream steering vectors to signals transmitted at the wireless network device; wherein only said 1 through N spatial stream steering vectors are updated in response to receiving the N spatial stream uplink packet, without updating remaining of said spatial stream steering vectors.