US 12,177,323 B2
Building, transmitting, and receiving frame structures in power line communications
Anand G. Dabak, Plano, TX (US); Badri N. Varadarajan, Mountain View, CA (US); Il Han Kim, Allen, TX (US); and Tarkesh Pande, Richardson, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Oct. 17, 2023, as Appl. No. 18/488,551.
Application 14/169,773 is a division of application No. 13/269,487, filed on Oct. 10, 2011, granted, now 8,718,115, issued on May 6, 2014.
Application 18/488,551 is a continuation of application No. 18/148,024, filed on Dec. 29, 2022, granted, now 11,831,744.
Application 18/148,024 is a continuation of application No. 17/355,231, filed on Jun. 23, 2021, granted, now 11,546,450, issued on Jan. 3, 2023.
Application 17/355,231 is a continuation of application No. 14/979,730, filed on Dec. 28, 2015, granted, now 11,082,541, issued on Aug. 3, 2021.
Application 14/979,730 is a continuation of application No. 14/169,773, filed on Jan. 31, 2014, granted, now 9,252,841, issued on Feb. 2, 2016.
Claims priority of provisional application 61/434,572, filed on Jan. 20, 2011.
Claims priority of provisional application 61/431,899, filed on Jan. 12, 2011.
Claims priority of provisional application 61/431,249, filed on Jan. 10, 2011.
Claims priority of provisional application 61/418,584, filed on Dec. 1, 2010.
Claims priority of provisional application 61/417,657, filed on Nov. 29, 2010.
Claims priority of provisional application 61/391,382, filed on Oct. 8, 2010.
Prior Publication US 2024/0048643 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 69/22 (2022.01); H04B 3/30 (2006.01); H04B 3/54 (2006.01); H04B 10/11 (2013.01); H04B 1/69 (2011.01)
CPC H04L 69/22 (2013.01) [H04B 3/30 (2013.01); H04B 3/54 (2013.01); H04B 3/542 (2013.01); H04B 10/11 (2013.01); H04B 2001/6912 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
identifying a first symbol and a second symbol within a preamble;
inserting an instance of the first symbol within a header portion of a first frame;
inserting an instance of the second symbol within the header portion of the first frame;
transmitting the first frame via an interface;
receiving a second frame;
locating a position of a preamble symbol within a header portion of the second frame; and
estimating a sampling frequency offset based on the located position of the preamble symbol.