Invention Grant
- Patent Title: Adaptive methods for optimizing sounding and channel feedback overhead in SU-MIMO and MU-MIMO beam forming
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Application No.: US14069173Application Date: 2013-10-31
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Publication No.: US09686004B2Publication Date: 2017-06-20
- Inventor: Subburajan Ponnuswamy
- Applicant: Aruba Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Aruba Networks, Inc.
- Current Assignee: Aruba Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Brooks, Cameron & Huebsch, PLLC
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04L5/00

Abstract:
Disclosed herein is a system, apparatus, and method for optimizing sounding and feedback overhead in a wireless digital network utilizing a beamforming technique by adaptively changing the frequency of sounding transmissions. The exemplary method comprises: transmitting a first plurality of sounding frames based on a first sounding interval, wherein the first sounding interval is a first period of time between transmissions of two sounding frames in the first plurality of sounding frames; receiving a plurality of feedback frames comprising information associated with the first plurality of sounding frames; based on the plurality of feedback frames: selecting a second sounding interval, different than the first sounding interval, for transmitting a second plurality of sounding frames; and transmitting the second plurality of sounding frames based on the second sounding interval, wherein the second sounding interval is a second period of time between transmissions of two sounding frames in the second plurality of sounding frames.
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