Wireless Paging Frame Determination via Bitmap and DRX Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing LTE system faces challenges in efficiently handling paging groups, particularly in idle mode, due to limitations in spectral efficiency, latency, and flexibility in assigning different discontinuous reception (DRX) cycle lengths, which affects system paging capacity and load distribution.
Innovation Solution
The method involves grouping WTRUs into paging groups, assigning a paging occasion, and using a bitmap representation to indicate the existence of a page, allowing for variable DRX cycle lengths and flexible paging group handling, thereby optimizing paging occasions and load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If WTRUs are grouped into paging groups with assigned paging occasions, then spectral efficiency is improved and latency is reduced, but device complexity increases due to variable DRX cycle lengths and flexible paging group handling
Solution Approach 1:
The system segments WTRUs into multiple paging groups, each with its own paging occasion and configurable DRX cycle length. This segmentation allows independent optimization of paging parameters for different user groups, improving spectral efficiency by reducing unnecessary wake-ups while maintaining manageable complexity through structured group management
Solution Approach 2:
The patent implements dynamic DRX cycle lengths that can be independently configured for each paging group. This dynamic parameter adjustment allows the system to adapt to varying traffic patterns and user requirements, improving latency and spectral efficiency without requiring complete system redesign
2Loss of time
If variable DRX cycle lengths are assigned to different paging groups, then latency is reduced and user experience is improved, but system complexity increases
Solution Approach 1:
Each paging group is assigned local quality characteristics through customized DRX cycle lengths and paging occasion configurations. This allows the system to optimize latency for specific user groups with high latency sensitivity while using longer DRX cycles for groups with lower requirements, reducing overall system complexity through localized optimization rather than uniform configuration
Solution Approach 2:
The system changes the DRX cycle length parameter independently for each paging group based on traffic patterns and user requirements. This parameter flexibility reduces paging latency for time-sensitive applications while maintaining simpler operation for less demanding services, achieving latency improvement without proportionally increasing system complexity
3Productivity
If paging groups are assigned specific paging occasions, then spectral efficiency is improved, but the system becomes less flexible in handling different paging scenarios
Solution Approach 1:
The paging group structure serves multiple functions simultaneously: it provides spectral efficiency through coordinated paging occasions, enables flexible DRX cycle configuration, supports different traffic patterns, and allows dynamic adaptation to various paging scenarios. This multi-functionality resolves the contradiction by making the system universally applicable to diverse requirements
Data Source
AI summary
A paging frame may be determined based on a first value divided by a second value and a WTRU identifier modulo the second value. The second value may be based on a discontinuous reception (DRX) cycle value.