US 12,284,620 B2
Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure
Il Gyu Kim, Seoul (KR); Hyeong Geun Park, Daejeon (KR); Young Jo Ko, Daejeon (KR); Kapseok Chang, Daejeon (KR); Hyo Seok Yi, Daejeon (KR); Young Hoon Kim, Daejeon (KR); and Seung Chan Bang, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Apr. 13, 2022, as Appl. No. 17/719,398.
Application 17/719,398 is a continuation of application No. 16/114,224, filed on Aug. 28, 2018, granted, now 11,363,547.
Application 16/114,224 is a continuation of application No. 15/286,600, filed on Oct. 6, 2016, granted, now 10,080,204, issued on Sep. 18, 2018.
Application 15/286,600 is a continuation of application No. 14/792,822, filed on Jul. 7, 2015, granted, now 9,496,976, issued on Nov. 15, 2016.
Application 14/792,822 is a continuation of application No. 13/775,158, filed on Feb. 23, 2013, granted, now 9,113,380, issued on Aug. 18, 2015.
Application 13/775,158 is a continuation of application No. 13/617,679, filed on Sep. 14, 2012, granted, now 8,406,218, issued on Mar. 26, 2013.
Application 13/617,679 is a continuation of application No. 13/036,787, filed on Feb. 28, 2011, granted, now 8,311,031, issued on Nov. 13, 2012.
Application 13/036,787 is a continuation of application No. 12/162,237, granted, now 7,969,964, issued on Jun. 28, 2011, previously published as PCT/KR2007/003573, filed on Jul. 25, 2007.
Claims priority of application No. 10-2006-0069800 (KR), filed on Jul. 25, 2006; application No. 10-2007-0006230 (KR), filed on Jan. 19, 2007; and application No. 10-2007-0074705 (KR), filed on Jul. 25, 2007.
Prior Publication US 2022/0240203 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 27/26 (2006.01); H04J 11/00 (2006.01); H04L 5/00 (2006.01); H04W 36/00 (2009.01); H04W 56/00 (2009.01); H04W 36/08 (2009.01)
CPC H04W 56/001 (2013.01) [H04J 11/0069 (2013.01); H04J 11/0093 (2013.01); H04L 5/0037 (2013.01); H04L 5/005 (2013.01); H04L 5/0053 (2013.01); H04L 27/2613 (2013.01); H04L 27/2655 (2013.01); H04L 27/2675 (2013.01); H04W 36/0061 (2013.01); H04W 36/08 (2013.01); H04W 56/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A communication method, comprising:
receiving a first set of Orthogonal Frequency Division Multiplexing (OFDM) symbols including a first OFDM symbol and a second OFDM symbol during a first time period, the first OFDM symbol comprises a first primary synchronization signal and the second OFDM symbol comprises a first secondary synchronization signal;
receiving a second set of OFDM symbols including a third OFDM symbol and a fourth OFDM symbol during a second time period, the third OFDM symbol comprises the first primary synchronization signal and the fourth OFDM symbol comprises a second secondary synchronization signal;
determining a first identifier based on the first primary synchronization signal;
determining a second identifier based on one of the first secondary synchronization signal and the second secondary synchronization signal; and
determining a cell identifier based on the first identifier and the second identifier,
wherein:
the first primary synchronization signal occupies a first set of subcarriers ranging from a first subcarrier to a second subcarrier, the first secondary synchronization signal occupies a second set of subcarriers ranging from a third subcarrier to a fourth subcarrier, the first subcarrier is identical to the third subcarrier in frequency, and the second subcarrier is identical to the fourth subcarrier in frequency,
the first OFDM symbol comprising the first primary synchronization signal and the second OFDM symbol comprising the first secondary synchronization signal are last two OFDM symbols of the first time period, and
the third OFDM symbol comprising the first primary synchronization signal and the fourth OFDM symbol comprising the second secondary synchronization signal are last two OFDM symbols of the second time period.