Dynamic Paging Cycle Adjustment for Wireless Network Latency

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Solution Overview

Problem

Wireless communication systems face a trade-off between power conservation and responsiveness due to long sleep cycles in mobile devices, which degrade system responsiveness and battery life.

Innovation Solution

A method to determine and set an optimal paging cycle for access terminals based on varying optimizing metrics, such as call arrival rate and battery reserve, to balance power conservation and responsiveness by adjusting the sleep duration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If mobile stations use long sleep cycles to conserve power, then power conservation is improved, but system responsiveness deteriorates

Engineering Contradiction:

Improvepower conservationVSAvoidsystem responsiveness

Core Design Contradiction:

Use of energy by moving objectVSSpeed

Solution Approach 1:

The patent implements dynamic adjustment of sleep cycle duration based on traffic conditions. The mobile station and base station negotiate and modify paging cycle lengths in real-time according to current network traffic patterns, allowing the system to adapt between power-saving long cycles and responsiveness-oriented short cycles based on actual conditions

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of paging cycle duration from a fixed value to a variable parameter that can be adjusted between different lengths. This allows the system to switch between short paging cycles (for responsiveness) and long paging cycles (for power conservation) by modifying the cycle duration parameter based on traffic conditions

Inventive Principle:

Principle #35Parameter changes

2Duration of action of moving object

If mobile stations use long sleep cycles, then battery life is extended, but call setup latency increases

Engineering Contradiction:

Improvebattery lifeVSAvoidcall setup latency

Core Design Contradiction:

Duration of action of moving objectVSLoss of time

Solution Approach 1:

The system dynamically adjusts sleep cycle duration based on traffic conditions and call patterns. During periods of high traffic or when calls are likely, shorter sleep cycles reduce call setup latency. During low-traffic periods, longer sleep cycles extend battery life, creating an adaptive balance between these conflicting requirements

Inventive Principle:

Principle #15Dynamics

3Speed

If mobile stations monitor control channel frequently, then system responsiveness is improved, but power consumption increases

Engineering Contradiction:

Improvesystem responsivenessVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic monitoring of the control channel with variable periods. Instead of continuous monitoring (which would maximize responsiveness but consume maximum power), the system uses periodic wake-ups at negotiated intervals, balancing power consumption against responsiveness needs based on current traffic conditions

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS8923895B2Optimal sleep / paging cycle duration in a wireless network

Publication Date: 2014.12.30 QUALCOMM INC

AI summary

Systems and methods for optimizing paging cycles in a wireless communication system are disclosed. An access terminal can include logic configured to determine an optimal paging cycle and logic configured to set the paging cycle based on the optimal paging cycle, where the paging cycle varies based on at least one optimizing metric.