Parallel System Information Acquisition in WiMAX Mobile Stations
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Solution Overview
Problem
Current methods for acquiring system information from multiple base stations in wireless communication networks are sequential, leading to significant latency and inefficiency, particularly in WiMAX networks where DCD and UCD messages are transmitted periodically with a maximum time period of 10 seconds.
Innovation Solution
A parallel acquisition method where a mobile station determines scheduled times for DCD and UCD message transmission from multiple base stations based on parameters in DL-MAP messages, creates a schedule list, and tunes to the base stations at these times to receive the messages, thereby reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sequential acquisition method is used to acquire system information from multiple base stations, then the mobile station can acquire system information from all base stations, but the acquisition time is significantly increased
Solution Approach 1:
The mobile station performs preliminary actions by determining the scheduled transmission times of DCD and UCD messages from multiple base stations in advance, creates a schedule list organizing these transmission times, and plans the acquisition sequence before actually tuning to each base station. This preliminary scheduling enables the mobile station to efficiently coordinate parallel acquisition operations, reducing the total acquisition time while ensuring complete system information collection from all base stations.
2Productivity
If parallel acquisition method is used to acquire system information from multiple base stations, then the acquisition time is reduced, but the complexity of scheduling and coordinating multiple base stations increases
Solution Approach 1:
The acquisition process is segmented into distinct phases: first, the mobile station determines scheduled transmission times for DCD and UCD messages from each base station independently; second, it creates a structured schedule list that organizes these times by base station; third, it executes parallel tuning operations based on this organized schedule. This segmentation transforms a complex parallel acquisition problem into manageable sequential steps, reducing scheduling complexity while maintaining high acquisition speed.
3Ease of operation
If the mobile station tunes to each base station sequentially to receive DCD and UCD messages, then the acquisition process is simple to implement, but the latency increases up to 10 seconds per base station
Solution Approach 1:
The mobile station performs preliminary determination of scheduled transmission times for DCD and UCD messages from multiple base stations before initiating the actual acquisition. By creating a schedule list that organizes these transmission times in advance, the mobile station can then execute parallel tuning operations efficiently. This preliminary scheduling action reduces latency from potentially 10 seconds per base station to a coordinated parallel process, while maintaining implementation simplicity through structured scheduling.
Data Source
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AI summary
A method for parallel acquisition of system information from multiple base stations may be implemented by a mobile station. The method may include determining scheduled times for transmission of the system information from the multiple base stations based on parameters included in messages from the multiple base stations. The method may also include creating a schedule list that comprises the scheduled times. The method may further include tuning to the base stations at the scheduled times that are specified in the schedule list in order to receive the system information from the base stations.