Mixed fine/coarse sounding methods for he stas for mimo and ofdma
AssigneeNewracom, Inc.
InventorsAhmad Reza HEDAYAT, Young Hoon KWON
Life of this patent
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Abstract
An enhanced sounding procedure provides both fine and coarse feedback from beamformees within the same sounding interval. This enhanced sounding procedure is enabled by several new fields in the sounding procedure field. The enhanced sounding procedures include multiple embodiments that can perform sounding between a beamformer and multiple high efficiency (HE) and/or very high throughput (VHT) beamformees each supporting coarse or fine sounding as the beamformer indicates.
Claims20
A method implemented by a network device in a wireless local area network (WLAN), the method to improve beamforming where a steering matrix or a compressed beamforming report is utilized by a beamformer using feedback from at least one beamformee, the steering matrix or compressed beamforming report to determine a spatial path for transmission from the beamformer to a set of beamformees in the WLAN, the method comprising:
- generating a sounding frame to initiate or continue a sounding procedure, the sounding frame including a level of granularity of feedback for the set of beamformees to report;
- and
- sending the sounding frame to the set of beamformees.
A method implemented by a network device in a wireless local area network (WLAN), the method to improve beamforming where a steering matrix or compressed beamforming report is determined by a beamformer using feedback from at least one beamformee, the steering matrix or compressed beamforming report to determine a spatial path for transmission from the beamformer to a set of beamformees in the WLAN, the method to utilize a level of granularity in reporting feedback between the beamformer and the beamformee for use in determining the steering matrix or compressed beamforming report, the method comprising:
- receiving a sounding frame to initiate a sounding procedure from a beamformer, the sounding frame including a level of granularity for use by each beamformee in the set of beamformees when generating a response frame;
- accessing the level of granularity in the sounding frame;
- generating the response frame based on the level of granularity specified by the sounding frame;
- and
- transmitting the response frame to the beamformer.
Dependencies are inferred from the claim text.