Dynamic Paging Period Load Balancing in Radio Access Networks
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Solution Overview
Problem
In wireless communication systems, peak traffic conditions can lead to overloading of paging channels, resulting in dropped or unsuccessful page messages, which affects the quality of service.
Innovation Solution
A method is implemented in the radio access network to determine if the load during a scheduled paging period exceeds a threshold, and if so, reschedules at least a portion of the load to a less heavily loaded paging period, or refrains from rescheduling if the second period is also overloaded, thereby optimizing page transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging channel capacity is increased to handle peak traffic, then page transmission reliability is improved, but system complexity and resource allocation difficulty increase
Solution Approach 1:
The system dynamically adjusts paging period assignments based on real-time traffic conditions. During peak periods, the base station controller monitors paging channel load and reassigns mobile stations to different paging periods, transforming the static paging structure into a dynamic one that adapts to varying traffic demands, thereby maintaining reliability without permanent system expansion
Solution Approach 2:
The invention changes the parameter of paging period assignment from fixed to variable. By modifying which paging period mobile stations monitor based on current system load, the network can distribute paging traffic across multiple periods, preventing any single period from becoming overloaded while maintaining simple infrastructure
2Quantity of substance
If paging channel load is increased during peak traffic, then service coverage is maintained, but page message loss increases
Solution Approach 1:
The paging channel is segmented into multiple paging periods, and the system distributes mobile stations across different periods. When one period becomes overloaded, the base station controller diverts traffic to other periods, effectively segmenting the load to prevent any single period from becoming a bottleneck that causes message loss
Solution Approach 2:
The base station controller acts as an intermediary that monitors paging channel load and dynamically reassigns mobile stations between paging periods. This intermediary function allows the system to balance load across periods, ensuring that no single period becomes overloaded to the point of message loss while maintaining comprehensive service coverage
3Ease of operation
If mobile stations are assigned fixed paging periods, then system operation is simplified, but load balancing capability deteriorates
Solution Approach 1:
The system transitions from static to dynamic paging period assignment. Mobile stations are initially assigned fixed paging periods for simple operation, but the base station controller can dynamically reassign stations to different periods based on traffic conditions, providing load balancing capability while maintaining operational simplicity through automated control
Data Source
AI summary
Disclosed herein are methods and systems for scheduling pages to mobile stations in a radio access network. An exemplary method involves (a) at a radio access network, determining whether or not a first load that is scheduled for transmission during a first paging period, is greater than a threshold load, (b) if the first load is greater than the threshold load, then (i) determining whether or not a second load that is scheduled for transmission during a second paging period, is less than the threshold load and (ii) if the second load is less than the threshold load, then rescheduling at least a portion of the first load for transmission during the second paging period, and (iii) otherwise, refraining from rescheduling the portion of the first load for transmission during the second paging period.