Relay Paging Controller for WiMAX Location Updates
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Solution Overview
Problem
The existing paging group network management in WiMAX systems is complex due to the need for anchor PCs to configure and manage all possible paging groups, leading to excessive data configuration and management complexity, especially when MSs move between different ASN GWs, causing uncertainty about which ASN GW to deliver paging messages to.
Innovation Solution
The proposed solution introduces a paging group network with multiple areas managed by specific PCs, where a relay PC acts as an agent for location updating and informs the anchor PC, reducing the number of paging groups managed by each PC and simplifying the configuration by designating a new paging group when an MS moves, with the anchor PC only responsible for paging control and storing status information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchor PCs manage all possible paging groups, then paging control coverage is complete, but management complexity and data configuration volume increase excessively
Solution Approach 1:
The patent divides paging group management into two segments: relay PCs manage their local paging groups while anchor PCs manage only the mapping between MS and relay PCs. This segmentation reduces the management burden on anchor PCs from handling all paging groups to only handling MS-relay PC mappings, directly resolving the contradiction between complete coverage and management complexity.
Solution Approach 2:
The relay PC acts as an intermediary between the anchor PC and the paging group. Instead of anchor PCs directly managing all paging groups, the relay PC mediates by receiving paging messages from anchor PCs and delivering them to the appropriate paging groups, thereby reducing the management complexity at the anchor PC while maintaining complete paging control coverage.
2Loss of time
If paging group size is increased to ensure MS remains in same group longer, then location updating frequency decreases, but paging overhead increases
Solution Approach 1:
The patent implements dynamic paging group management where relay PCs can assign MS to different paging groups based on current network conditions and MS location patterns. This dynamic adjustment allows optimization of paging group size over time, balancing location updating frequency against paging overhead by adapting to changing conditions rather than using fixed group sizes.
Data Source
AI summary
A paging group network includes multiple paging groups formed by areas covered by base stations (BSs). The paging group network further includes an anchor paging controller (PC) and a relay PC. The anchor paging controller initiates a page to a mobile station (MS), addresses the paging group in which the MS is located, and stores status information about the MS in a corresponding location register (LR). The relay PC manages the paging groups. A method for updating MS locations is also provided. Thereby, the present invention optimizes the paging and location updating processes, and reduces the complexity of managing the idle mode.