Adaptive CoMP Scheme Selection for LTE Battery Conservation
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Solution Overview
Problem
In cellular radio access networks, particularly in LTE networks, reception at cell edges is problematic due to lower signal strength and higher interference levels from neighboring cells, leading to increased power consumption in mobile devices when using joint processing schemes for improved service.
Innovation Solution
Implementing a method to dynamically select between coordinated multipoint schemes based on the battery power level of a user equipment (UE), switching from joint processing to coordinated scheduling/beamforming schemes when battery power is low to conserve power and extend battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If joint processing schemes are used to improve service quality at cell edges, then service quality is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the CoMP scheme selection adaptive and time-varying based on UE battery status. The system dynamically switches between joint processing and coordinated scheduling schemes according to real-time battery power levels, transforming a static configuration into a dynamic one that adapts to changing conditions.
Solution Approach 2:
The patent changes the operational parameters of the CoMP scheme based on battery power level. When battery power is sufficient, the system uses joint processing with full coordination; when battery power is low, it switches to coordinated scheduling with reduced coordination, effectively changing the system parameters to match available energy resources.
2Reliability
If joint processing schemes are used to improve service quality at cell edges, then service quality is improved, but battery life decreases
Solution Approach 1:
The system dynamically adjusts the CoMP scheme based on real-time battery status monitoring. When battery level drops below a threshold, the UE transitions from joint processing to coordinated scheduling, extending battery life while maintaining acceptable service quality through adaptive scheme selection.
Solution Approach 2:
The patent modifies the operational parameters of the communication system by changing the CoMP scheme type based on battery power level, thereby controlling the duration of battery action. This parameter change allows the system to extend battery life during low-power conditions while maintaining service quality when energy is available.
3Reliability
If coordinated multipoint schemes are optimized for service quality, then service quality is improved, but device complexity increases
Solution Approach 1:
The patent segments the CoMP scheme selection into distinct modes based on battery power levels. By dividing the operational space into high-power mode (joint processing) and low-power mode (coordinated scheduling), the system simplifies the decision-making process and reduces device complexity through structured segmentation of operational states.
Solution Approach 2:
The patent uses parameter changes to simplify device complexity by establishing clear thresholds and criteria for scheme selection. By defining specific battery power level thresholds and corresponding schemes, the system reduces the complexity of real-time decision-making while maintaining service quality optimization.
Data Source
AI summary
A radio access network (RAN) may be configured to communicate with mobile stations using two or more different coordinated multipoint schemes. Further, the RAN may use different coordinated multipoint schemes for different communications with the same mobile station. In particular, methods and systems are disclosed herein that help to intelligently switch between different coordinated multipoint schemes for communications with a given mobile station, based on the remaining battery life of the mobile station.