Mobile Station Scanning Algorithm Selection by Sector Border Distance
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Solution Overview
Problem
In wireless communication networks, mobile stations operating in border areas between sectors with different frequency bands face challenges in conserving battery life due to the need to scan for signals from both same- and different-configuration sectors, leading to unnecessary battery drain.
Innovation Solution
A mobile station determines its distance from the primary sector's transmitter and calculates a border distance to select a scanning algorithm that decides when to scan for signals from different-configuration sectors, optimizing scanning based on distance classifications to conserve battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile station scans for signals from both same-configuration and different-configuration sectors, then the mobile station can ensure it selects the optimal sector for communication, but the battery life is drained unnecessarily
Solution Approach 1:
The patent applies local quality by differentiating scanning behavior based on the mobile station's location relative to sector borders. The mobile station determines its distance to sector borders and applies different scanning algorithms accordingly: comprehensive scanning (both same and different configuration sectors) is performed only when the mobile station is near border areas, while restricted scanning (same configuration sectors only) is performed when远离 borders. This localized differentiation ensures reliable sector selection where needed while conserving battery power where comprehensive scanning is unnecessary.
2Reliability
If the mobile station performs comprehensive scanning for all neighbor sectors, then the mobile station can find better wireless coverage, but the scanning process consumes excessive battery power
Solution Approach 1:
The patent implements dynamics by making the scanning algorithm adaptive and adjustable based on real-time conditions. The mobile station dynamically determines its distance to sector borders and switches between different scanning algorithms (first, second, or third algorithms) depending on its location. This dynamic adaptation allows the system to optimize between scanning thoroughness and energy consumption based on the mobile station's current operational context, rather than using a fixed scanning approach.
3Device complexity
If the mobile station uses a fixed scanning algorithm for all conditions, then the scanning process is simple to implement, but the battery consumption cannot be optimized
Solution Approach 1:
The patent resolves this contradiction by implementing a dynamic scanning algorithm that adapts to the mobile station's location. The mobile station determines its distance to sector borders and selects from multiple scanning algorithms (first, second, or third algorithms) based on this distance measurement. This dynamic approach balances implementation complexity with energy optimization, allowing the system to use simpler scanning when away from borders and more comprehensive scanning only when necessary near borders, thereby extending battery life without excessive complexity.
Data Source
AI summary
A wireless network includes first-configuration sectors with a first frequency assignment and second-configuration sectors with a second frequency assignment. When served by a first-configuration sector that borders a second-configuration sector, the mobile station receives (i) a neighbor list that identifies neighbor sectors of the primary sector, including the second-configuration sector, (ii) a primary-sector reference distance between a transmitter for the primary sector and a reference point in the primary sector, and (iii) a neighbor-sector reference distance between a transmitter for the second-configuration sector and the reference point. Based on the reference distances, the mobile station calculates a border distance between the primary sector's transmitter and a border between the sectors. The mobile station compares its distance from the primary sector's transmitter to the primary-sector reference distance and/or border distance. Based on the comparison, the mobile station selects a scanning algorithm that determines when to scan for the second-configuration sector.