US 12,341,712 B2
Methods and apparatus for multi-carrier communications with variable channel bandwidth
Xiaodong Li, Kirkland, WA (US); Titus Lo, Bellevue, WA (US); Kemin Li, Bellevue, WA (US); and Haiming Huang, Bellevue, WA (US)
Assigned to Intellectual Ventures II LLC, Wilmington, DE (US)
Filed by Intellectual Ventures II LLC, Wilmington, DE (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,407.
Application 14/505,913 is a division of application No. 12/870,617, filed on Aug. 27, 2010, granted, now 8,953,641, issued on Feb. 10, 2015.
Application 17/390,407 is a continuation of application No. 16/715,995, filed on Dec. 16, 2019, granted, now 11,082,172.
Application 16/715,995 is a continuation of application No. 15/727,831, filed on Oct. 9, 2017, granted, now 10,511,417, issued on Dec. 17, 2019.
Application 15/727,831 is a continuation of application No. 14/505,913, filed on Oct. 3, 2014, abandoned.
Application 12/870,617 is a continuation of application No. 10/583,534, granted, now 7,787,431, issued on Aug. 31, 2010, previously published as PCT/US2005/014828, filed on Apr. 29, 2005.
Claims priority of provisional application 60/567,233, filed on May 1, 2004.
Prior Publication US 2021/0376970 A1, Dec. 2, 2021
Int. Cl. H04L 5/00 (2006.01); H04L 5/14 (2006.01); H04W 72/23 (2023.01); H04W 72/30 (2023.01); H04L 27/26 (2006.01); H04W 48/16 (2009.01); H04W 72/00 (2023.01); H04W 76/10 (2018.01)
CPC H04L 5/0007 (2013.01) [H04L 5/0028 (2013.01); H04L 5/0041 (2013.01); H04L 5/0044 (2013.01); H04L 5/0064 (2013.01); H04L 5/1469 (2013.01); H04W 72/23 (2023.01); H04W 72/30 (2023.01); H04L 5/0021 (2013.01); H04L 5/0048 (2013.01); H04L 5/0094 (2013.01); H04L 27/2613 (2013.01); H04W 48/16 (2013.01); H04W 72/00 (2013.01); H04W 76/10 (2018.02)] 12 Claims
OG exemplary drawing
 
1. A mobile station using orthogonal frequency division multiple access (OFDMA), the mobile station comprising:
frequency processing circuitry; and
a processor, wherein:
the frequency processing circuitry and the processor are configured to scan spectral bands for a first signal, the first signal being a broadcast signal having bandwidth information, the first signal received in a first bandwidth of cell and using a first Fast Fourier Transform (FFT) size;
the frequency processing circuitry and the processor configured to receive and process the broadcast signal in the first bandwidth; and
the frequency processing circuitry and the processor configured to switch to receive and process a second bandwidth using a second FFT size, the second bandwidth being of different frequency size than the first bandwidth and the second FFT size being the same as the first FFT size.