Modem Network Search Method Signal Stability Optimization
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Solution Overview
Problem
Existing mobile communication modem network search strategies, such as the S criterion, are inefficient due to momentary signal fluctuations causing unnecessary network searches, leading to increased power consumption and workload, especially when dealing with multiple neighboring cells.
Innovation Solution
A modem with a network search method that samples signal level and quality values, determines signal power and stability conditions, and turns off network search when both conditions are met, thereby avoiding unnecessary searches by determining a network search state as an off state when signal strength and stability are high, and initiating a search only when the signal strength decreases monotonically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network search measurement is started when signal quality reaches threshold value, then network search can be triggered in time, but much electricity is wasted during the search for neighboring cells
Solution Approach 1:
The patent applies preliminary action by performing signal quality measurement and power measurement in advance before triggering network search. The modem continuously monitors serving cell signal quality and power levels, and only initiates network search when both metrics simultaneously meet threshold conditions, preventing premature search activation due to momentary fluctuations
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring and comparing current signal quality and power values against predefined thresholds. The network search function is dynamically controlled based on feedback from these measurements, enabling the system to adaptively activate or deactivate search operations according to real-time signal conditions
2Reliability
If network search measurement is started when signal quality reaches threshold value, then network search can be triggered in time, but workload is greatly increased especially in the case of many neighboring cells
Solution Approach 1:
The patent performs preliminary assessment of both signal quality and signal power before initiating network search. By pre-evaluating these two parameters and requiring both to meet threshold conditions simultaneously, the system avoids unnecessary search operations that would increase workload without providing benefit
Solution Approach 2:
The patent applies partial action by selectively activating network search only when necessary conditions are met, rather than continuously searching or searching based on a single parameter. This partial activation approach reduces overall workload while maintaining adequate network search capability when truly needed
Data Source
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AI summary
The present invention provides a modem and a network search method of the modem. The method includes: sampling a signal level value and a signal quality value of a serving cell; obtaining a signal power condition according to the signal level value, and obtaining a signal stability condition according to the signal quality value; and when both the signal power condition and the signal stability condition are higher than set conditions, determining a network search state as an off state. In embodiments of the present invention, power consumption and a workload may be reduced.