Wireless Mobile Station Cell Search and Adjacency List Management
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Solution Overview
Problem
Existing methods for managing wireless cell adjacency relationships in mobile communication systems fail to efficiently detect lack of registration, leading to communication disruptions and degraded quality due to unregistered base stations, making it difficult for administrators to identify and address these issues without manual driving tests.
Innovation Solution
A system that uses a non-adjacent cell quality measuring unit and an adjacent cell list addition candidate determination unit to detect and register unregistered wireless cells through a three-stage cell search, allowing for automatic addition to the adjacent cell list, thereby avoiding communication disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual driving tests are used to detect unregistered cells, then detection accuracy is improved, but time consumption and operational complexity increase
Solution Approach 1:
The mobile station automatically performs cell search and measurement functions that previously required manual driving tests. The device autonomously identifies unregistered cells by searching for synchronization signals and measuring quality metrics, eliminating the need for administrator-driven field tests while maintaining detection accuracy.
Solution Approach 2:
The patent replaces manual mechanical driving tests with electronic signal processing methods. The mobile station uses radio frequency signal detection and digital signal processing to identify unregistered cells, substituting physical field testing with automated electronic measurement and analysis capabilities.
2Manufacturing precision
If the adjacent cell list is manually managed, then registration accuracy is improved, but device complexity and operational burden increase
Solution Approach 1:
The mobile station autonomously performs cell search, quality measurement, and adjacent cell list update operations. The device automatically adds detected unregistered cells to the adjacent cell list based on quality thresholds, eliminating manual registration tasks while maintaining accurate cell list management through automated measurement and decision-making processes.
3Difficulty of detecting and measuring
If comprehensive cell search is performed continuously, then detection capability is improved, but energy consumption increases
Solution Approach 1:
The mobile station performs cell search and quality measurement operations periodically rather than continuously. The device monitors quality metrics at regular intervals and triggers comprehensive cell search only when quality thresholds are breached or at scheduled update periods, reducing energy consumption while maintaining effective detection capability through periodic assessment.
Data Source
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AI summary
A wireless mobile station (1) includes: an acquisition unit (12a) acquiring an adjacent cell list, in a first wireless cell which is a communication area of a wireless base station (2) established a wireless link with the wireless mobile station, defining a second wireless cell adjacent to the first wireless cell; a search unit (13) searching wireless cells which is detectable in the first wireless cell, and measuring a wireless quality sensed by the wireless mobile station from a third wireless cell which is not included in the adjacent cell list among the detected wireless cells; and a determination unit (14) estimating a wireless quality sensed by the wireless mobile station from the third wireless cell on assumption that the third wireless cell is added to the adjacent cell list, and determining whether or not the third wireless cell is to be added to the adjacent cell list by using a result of the estimation.