Invention Grant
- Patent Title: Scrambling methods for synchronization channels
- Patent Title (中): 同步信道的加扰方法
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Application No.: US12028770Application Date: 2008-02-08
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Publication No.: US07920598B2Publication Date: 2011-04-05
- Inventor: Tao Luo
- Applicant: Tao Luo
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agent Howard Seo; Larry Moskowitz
- Main IPC: H04J3/06
- IPC: H04J3/06

Abstract:
Systems and methods are provided that facilitate generation and detection of synchronization channels in a wireless communication system. A one-to-one relationship is established among a set of scrambling codes (SCs) and a set of primary synchronization channel (P-SCH) sequences which are determined by a reusable sector identifier that is determined through detection of the P-SCH channel. The set of scrambling codes are utilized to (i) scramble a secondary synchronization channel sequence which facilitates detection of the S-SCH sequence once the reusable sector identifier is detected, or (ii) compose an unscrambled S-SCH sequence through a sequential or interleaved concatenation of SCs wherein a concatenation indication is received in a mobile terminal. Cyclic shifts and sign-flip operations applied to a base sequence are employed to generate SCs. A lookup table and a library of SCs facilitate scrambling code determination in a mobile terminal that receives associated P-SCH and S-SCH sequences.
Public/Granted literature
- US20080291945A1 SCRAMBLING METHODS FOR SYNCHRONIZATION CHANNELS Public/Granted day:2008-11-27
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