Communication Device Clock Synchronization Gain Adjustment
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Solution Overview
Problem
Existing communication devices face inefficiencies in clock signal synchronization during discontinuous reception cycles, leading to increased energy consumption and prolonged synchronization times.
Innovation Solution
A communication device with a radio frequency circuit and baseband circuit that adjusts gain levels based on received radio frequency signals, allowing for efficient synchronization of clock signals by amplifying the second radio frequency signal with an amplification factor based on the determined gain level, enabling synchronization at the start of the second power-up phase and maintaining constant gain levels during synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the receiver is powered-up and down in accordance with discontinuous reception to save energy, then energy consumption is reduced, but clock signal synchronization time is prolonged
Solution Approach 1:
The patent applies preliminary action by determining the gain level during the first power-up phase before the actual synchronization occurs in the second power-up phase. This pre-determination of gain level prepares the system in advance, allowing the clock signal synchronization to proceed more quickly when the second power-up phase occurs, thus reducing the overall synchronization time while maintaining energy-saving discontinuous reception operation
Solution Approach 2:
The patent implements dynamics by adjusting the gain level dynamically based on the received signal strength during different power-up phases. The gain control is adapted to the specific conditions of each phase, allowing optimal signal processing during synchronization while maintaining energy efficiency through discontinuous reception. This dynamic adjustment enables faster synchronization without requiring continuous receiver operation
2Measurement precision
If gain is adjusted based on received signal to improve synchronization accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by using the existing radio frequency circuit and baseband circuit to perform multiple functions: receiving signals during different power-up phases, determining gain levels, and enabling clock signal synchronization. The same hardware components are utilized for both signal reception and gain determination, avoiding the need for separate dedicated circuits and thus preventing increased device complexity while achieving improved synchronization accuracy
Data Source
AI summary
A communication device is provided comprising a radio frequency circuit configured to receive a first radio frequency signal and a second radio frequency signal. A baseband circuit configured to determine a gain level based on the first radio frequency signal. A clock circuit configured to generate a clock signal. The radio frequency circuit is configured to determine a gain adjusted signal based on the second radio frequency signal and on the gain level. The baseband circuit is configured to synchronize the clock signal based on the gain adjusted signal.