US 9,948,488 C1 (12,835th)
Channel probing signal for a broadband communication system
Xiaodong Li, Kirkland, WA (US); Titus Lo, Bellevue, WA (US); Kemin Li, Bellevue, WA (US); and Haiming Huang, Bellevue, WA (US)
Filed by Neocific, Inc., Bellevue, WA (US)
Assigned to Neo Wireless, LLC
Reexamination Request No. 90/019,338, Dec. 15, 2023.
Reexamination Certificate for Patent 9,948,488, issued Apr. 17, 2018, Appl. No. 14/321,615, Jul. 1, 2014.
Application 90/019,338 is a continuation of application No. 13/861,942, filed on Apr. 12, 2013, granted, now 8,767,522.
Application 13/861,942 is a continuation of application No. 13/347,644, filed on Jan. 10, 2012, granted, now 8,428,009.
Application 13/347,644 is a continuation of application No. 12/975,226, filed on Dec. 21, 2010, granted, now 8,094,611.
Application 12/975,226 is a continuation of application No. 10/583,229, granted, now 7,864,725, previously published as PCT/US05/03518, filed on Jan. 27, 2005.
Claims priority of provisional application 60/540,586, filed on Jan. 30, 2004.
Claims priority of provisional application 60/540,032, filed on Jan. 29, 2004.
Ex Parte Reexamination Certificate issued on Jan. 31, 2025.
Int. Cl. H04L 12/26 (2006.01); H04B 1/707 (2011.01); H04B 1/711 (2011.01); H04L 5/00 (2006.01); H04L 25/03 (2006.01); H04L 27/00 (2006.01); H04L 27/26 (2006.01); H04L 25/02 (2006.01)
CPC H04B 1/707 (2013.01) [H04B 1/711 (2013.01); H04L 5/0007 (2013.01); H04L 5/0028 (2013.01); H04L 25/03834 (2013.01); H04L 27/0008 (2013.01); H04L 27/0012 (2013.01); H04L 27/2602 (2013.01); H04L 27/2626 (2013.01); H04L 27/2647 (2013.01); H04L 5/0016 (2013.01); H04L 25/0228 (2013.01); H04L 27/2607 (2013.01); H04L 27/2655 (2013.01)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1, 2, 4-14 and 16-20 is confirmed.
Claims 3 and 15 were not reexamined.
1. A communication method for a mobile device served by a base station in a communication system employing Orthogonal Frequency Division Multiplexing (OFDM), the mobile device transmitting data information on data subcarriers and control information on control subcarriers in an uplink frequency band to the base station, the method comprising:
receiving, at the mobile device, an instruction from the serving base station to transmit a probing signal;
forming, in response to the received instruction, the probing signal with a code sequence modulated in the frequency domain, wherein:
the probing signal is configured to overlap, in the time domain, with uplink signals transmitted over the uplink frequency band of the communication system; and
the probing signal is configured to overlap, in the frequency domain, with the data subcarriers but to avoid the control subcarriers in the uplink frequency band of the communication system; and transmitting the probing signal to the serving base station.