Wireless Access Point DRX Parameter Control for Interference
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Solution Overview
Problem
Current methods for controlling Discontinuous Reception (DRX) parameters for High Power User Equipments (HPUEs) in wireless communication systems are neither efficient nor effective in reducing interference to non-HPUEs and conserving battery power, as they do not adequately adjust DRX settings based on RF interference levels.
Innovation Solution
A wireless access point determines the number of HPUEs and non-HPUEs experiencing RF interference and adjusts DRX parameters for HPUEs to a low setting when the number of affected non-HPUEs exceeds the number of HPUEs, by modifying timers such as the DRX On-Duration, Inactivity, and Retransmission timers to reduce interference and conserve battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If HPUEs transmit at higher power to increase cell range and coverage, then coverage area is improved, but RF interference to non-HPUEs increases
Solution Approach 1:
The patent implements periodic DRX cycles where HPUEs alternately activate their receivers between ON durations and OFF durations. This periodic operation allows HPUEs to transmit at high power when needed while periodically entering low-power states, thereby reducing average RF interference to non-HPUEs while maintaining adequate coverage area.
Solution Approach 2:
The patent dynamically adjusts DRX parameters (on-duration timer, inactivity timer, retransmission timer) based on network conditions and interference levels. By making DRX settings adaptable rather than fixed, the system can optimize the balance between coverage area and interference generation in real-time, allowing HPUEs to expand coverage when necessary while minimizing interference when conditions require it.
2Use of energy by moving object
If HPUEs use aggressive DRX settings to save battery power, then energy consumption is reduced, but interference control capability deteriorates
Solution Approach 1:
The patent employs dynamic DRX parameter adjustment where the access point modifies on-duration, inactivity, and retransmission timers based on current network conditions. This allows the system to adapt battery saving aggressiveness in real-time, intensifying power savings when interference levels are acceptable and relaxing them when better interference control is needed, thus balancing energy consumption with interference control capability.
Solution Approach 2:
The patent changes DRX parameter values (timers and thresholds) based on network conditions and interference measurements. By adjusting these parameters dynamically, the system can optimize the trade-off between battery power consumption and interference control, ensuring that power saving measures do not compromise the ability to control RF interference effectively.
3Device complexity
If default DRX protocol settings are used for HPUEs, then implementation simplicity is maintained, but interference to non-HPUEs increases and battery saving effectiveness decreases
Solution Approach 1:
The patent modifies default DRX protocol parameters (on-duration timer, inactivity timer, retransmission timer) specifically for HPUEs based on their high-power transmission characteristics. These parameter changes are implemented through standardized protocol mechanisms, maintaining implementation simplicity while effectively reducing RF interference to non-HPUEs and improving battery saving performance for HPUEs.
Data Source
AI summary
A wireless access point controls Discontinuous Reception (DRX) parameters for User Equipment (UE). The wireless access point wirelessly exchanges wireless communications with a plurality of UEs comprising High Power UEs (HPUEs) and non-HPUEs. The wireless access point determines a number of the HPUEs and determines a number non-HPUEs experiencing RF interference above an RF interference threshold. The wireless access point compares the number of non-HPUEs experiencing RF interference above the RF interference threshold to the number of HPUEs and when the number of non-HPUEs experiencing RF interference above the RF interference threshold exceeds the number of HPUEs, then the wireless access point modifies the DRX parameters for the HPUEs to a low DRX parameter setting. The wireless access point wirelessly transmits an instruction to the HPUEs indicating the modification of the DRX parameters for the HPUEs to the low DRX parameter setting.