Invention Grant
- Patent Title: Compensating for frequency shift and timing shift in frequency and time tracking loops based on mobile unit velocity
- Patent Title (中): 基于移动单元速度补偿频率和时间跟踪循环中的频移和定时偏移
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Application No.: US10632421Application Date: 2003-08-01
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Publication No.: US07027815B2Publication Date: 2006-04-11
- Inventor: Andrew Sendonaris
- Applicant: Andrew Sendonaris
- Applicant Address: US CA san Diego
- Assignee: Qualcomm, Incorporated
- Current Assignee: Qualcomm, Incorporated
- Current Assignee Address: US CA san Diego
- Agent Philip Wadsworth; Bruce W. Greenhaus; Richard A. Bachand
- Main IPC: H04Q7/20
- IPC: H04Q7/20

Abstract:
A method and apparatus are provided for adjusting a communication receiver based on the velocity of a wireless communication device in relation to a base station. The receiver is adjusted by estimating a frequency shift of a communication signal transmitted between the base station and the wireless communication device (WCD) based on the WCD velocity. Using this estimate, adjustments are made to the communication receiver to account for the frequency shift of the communication signal. Adjustments to the receiver can include adjusting frequency and time tracking loops to account for the change in frequency of a signal received by, and from, the WCD as it moves relative to the base station. The receiver may be located in the WCD, or in the network infrastructure, or in both.
Public/Granted literature
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