United States Patent 9,585,043
Grandhi February 28, 2017
Group transmissions in wireless local area networks
Abstract
A method for channel sounding by an access point includes transmitting a sounding frame to a plurality of mobile stations (STAs). The sounding frame includes training symbols to be measured by each of the plurality of STAs. A sounding response frame is received from each of the plurality of STAs. The sounding response frame received from a first STA of the plurality of STAs is received at a short interframe spacing interval delay after completion of the sounding request frame transmission.
Inventors:
Grandhi; Sudheer A. (Pleasanton, CA)
Applicant:
Name
City
State
Country
Type
Grandhi; Sudheer A.
Pleasanton
CA
US
Assignee:
InterDigital Patent Holdings, Inc. (Wilmington, DE)
Family ID:
1000002433584
Appl. No.:
13/085,111
Filed:
April 12, 2011
Prior Publication Data
Document Identifier
Publication Date
US 20110261708 A1 Oct 27, 2011
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
61323617 Apr 13, 2010
61332404 May 7, 2010
61334346 May 13, 2010
Current U.S. Class: 1/1
Current CPC Class: H04W 24/10 (20130101); H04L 1/1685 (20130101); H04W 4/06 (20130101); H04W 84/12 (20130101); H04W 99/00 (20130101)
Current International Class: H01J 1/16 (20060101); H04W 24/10 (20090101); H04W 4/06 (20090101); H04W 84/12 (20090101); H04W 99/00 (20090101); H04L 1/16 (20060101)
Field of Search: ;370/252,241,312,328,343 ;455/434,450,464,509,515,516,575.115
PPP