Paging Occasion Formula for Even Load Distribution in LTE
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Solution Overview
Problem
Current paging mechanisms in LTE systems face inefficiencies in distributing paging load across frames, leading to uneven allocation and potential overload, especially with varying Discontinuous Reception (DRX) cycles, which affects power management and device wake-up efficiency in user equipment (UE).
Innovation Solution
The proposed solution introduces a new formula for calculating paging occasions, SFN mod Paging_DRX_Period == (32 div Paging_Group_Count)*(IMSI mod [2 (n+i-5)< ], which ensures even frame allocation regardless of DRX period, allowing for flexible adjustment of paging groups and reducing power consumption by optimizing frame usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional paging formulas are used to calculate paging occasions, then paging load distribution becomes uneven across frames, but this causes overload and inefficiency in LTE systems
Solution Approach 1:
The patent changes the mathematical parameters in the paging occasion calculation formula. The new formula uses SFN mod Paging_DRX_Period == (32 div Paging_Group_Count)*(IMSI mod [2 (n+i-5)] instead of traditional formulas, which fundamentally alters how paging frames are distributed. This parameter change ensures that paging load is evenly distributed across all frames regardless of DRX period variations, resolving the contradiction between productivity and reliability.
2Use of energy by moving object
If DRX cycles are varied to accommodate different power management requirements, then power saving improves, but paging load distribution becomes uneven
Solution Approach 1:
The patent modifies the paging calculation parameters to be independent of DRX cycle variations. The formula SFN mod Paging_DRX_Period == (32 div Paging_Group_Count)*(IMSI mod [2 (n+i-5)] ensures that even when UEs have different DRX cycles for power saving, the paging load distribution remains uniform across frames. This resolves the contradiction by making paging distribution robust to DRX cycle variations.
3Quantity of substance
If more paging groups are allocated to handle higher paging demands, then paging capacity increases, but frame allocation becomes excessive
Solution Approach 1:
The patent changes the relationship between paging groups and frame allocation through the new formula. The term (32 div Paging_Group_Count)*(IMSI mod [2 (n+i-5)] creates an optimized mapping that efficiently utilizes existing frames. This allows the system to handle higher paging demands by better distributing load across available frames rather than allocating excessive frames, thus increasing paging capacity without proportionally increasing complexity.
Data Source
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AI summary
Receiving a paging frame by a UE based on a formula for the even distribution of paging. Determining the paging frame by the UE in a communication channel is based on the a formula taking into account least significant bits of UE identifier - as the IMSI - based on the paging group count and DRX cycle.