Frame synchronization and scrambling code identification in wireless communications systems and methods therefor
AssigneeMotorola, Inc.
InventorsBrian Storm, Qiang Guo, Ming D. Tan, Xuping Zhou, Mang Zhu
Life of this patent
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Abstract
A mobile wireless communications device and methods therefore, including receiving a signal (710), storing a portion of the received signal (730), identifying all possible pilot signals by determining slot boundary information for the stored signal portion (720), determining frame boundary information and/or scrambling code information (760) of the stored signal portion by correlating the stored signal portion with the scrambling codes based on the slot boundary information. In other embodiments, the search is performed in real-time without storing the signal.
Claims24
A method in a wireless communications device, the method comprising:
- receiving a signal;
- determining slot boundary information of the signal;
- determining frame boundary information of the signal by correlating the signal with several scrambling codes based upon the slot boundary information.
A method in a wireless communications device, the method comprising:
- receiving a signal;
- storing a portion of the signal;
- determining slot boundary information of the stored signal portion;
- determining frame boundary information of the stored signal portion by correlating the stored signal portion with a plurality of scrambling codes based on the slot boundary information.
A method in a wireless communications device, the method comprising:
- receiving a signal;
- determining at least one slot boundary of the signal;
- identifying a particular scrambling code associated with the at least one slot boundary by correlating the signal with a plurality scrambling codes based on the at least one slot boundary without using scrambling code group information.
A method in a wireless communications device, the method comprising:
- receiving a signal;
- determining at least one slot boundary of the signal;
- identifying a particular scrambling code associated with the at least one slot boundary by correlating the signal with a plurality scrambling codes based on the at least one slot boundary without using frame boundary information.
Dependencies are inferred from the claim text.