InterDigital Inc (IDCC)

[Gamco]

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

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