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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8830815 B1

PDFFull Text
Date of Patent:
Sep. 09, 2014

Filed:

May. 15, 2012

Preamble design for television white space transmissions

Applicants:

Sameer Vermani, San Diego, CA (US);

Santosh Paul Abraham, San Diego, CA (US);

Stephen J. Shellhammer, San Diego, CA (US);

Albert Van Zelst, San Diego, CA (US);

Didier Johannes Richard Van Nee, San Diego, CA (US);

Vincent Knowles Jones, Iv, San Diego, CA (US);

Inventors:

Sameer Vermani, San Diego, CA (US);

Santosh Paul Abraham, San Diego, CA (US);

Stephen J. Shellhammer, San Diego, CA (US);

Albert van Zelst, San Diego, CA (US);

Didier Johannes Richard van Nee, San Diego, CA (US);

Vincent Knowles Jones, IV, San Diego, CA (US);

Assignee:

Qualcomm Incorporated, San Diego, CA (US);

Attorney:

S. Hossain Beladi

Primary Examiner:

Dady Chery

Int. Cl.
CPC ...
H04J 11/00 (2006.01); H04L 5/00 (2006.01); H04L 29/06 (2006.01); H04L 27/26 (2006.01); H04W 4/00 (2009.01);
U.S. Cl.
CPC ...
H04L 69/00 (2013.01); H04L 5/0053 (2013.01); H04L 27/2602 (2013.01); H04W 4/00 (2013.01);
Abstract

A method for generating a Physical Layer Convergence Protocol Packet Data Unit (PPDU) having a preamble and a payload for television white space transmission (TVWS) is provided. The symbols of the PPDU each include 128 total (orthogonal frequency-division multiplexing) OFDM tones or 256 total OFDM tones. The preamble includes a signal (SIG) field symbol having 108 OFDM data tones if the symbols of the PPDU include 128 total OFDM tones or having 234 OFDM data tones if the symbols of the PPDU include 256 total OFDM tones. The SIG field symbol indicates at least one of an amount of data in the payload or a length of time that the PPDU will occupy the television broadcast frequency spectrum. The PPDU is generated by down-clocking an 802.11ac signal by a factor so that the bandwidth of the PPDU decreases down to one appropriate for use in a TVWS channel.

Find Patent Forward Citations

Vermani, Sameer. (2014). Preamble design for television white space transmissions (U.S. Patent No. 8830815). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8830815

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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