Parallel DRX Measurements for Wireless Station Power Saving
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Solution Overview
Problem
Current wireless communication systems, particularly those using LTE-RAN, face inefficiencies in power management and network measurement processes due to the need for continuous monitoring of downlink control channels, which hinders optimal network selection and handover processes during low traffic periods.
Innovation Solution
Implementing a method where wireless stations perform inter-RAT and inter-frequency measurements in parallel with the active mode of the Discontinuous Reception (DRX) cycle, allowing multiple measurements to be conducted within a single active period and reducing the duration of future active periods, thereby maximizing idle mode time and conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of downlink control channels is performed, then network connectivity and control information reception are maintained, but power consumption increases and idle mode efficiency decreases
Solution Approach 1:
The patent implements Discontinuous Reception (DRX) cycles where the wireless station periodically wakes up during active periods to monitor downlink control channels and then enters idle periods to conserve power. This periodic monitoring approach maintains network connectivity while significantly reducing power consumption compared to continuous monitoring, directly resolving the contradiction between reliability and energy usage.
2Measurement precision
If inter-RAT and inter-frequency measurements are performed sequentially, then measurement accuracy is maintained, but the duration of active periods increases reducing idle mode time
Solution Approach 1:
The patent merges multiple measurement operations (inter-RAT measurements and inter-frequency measurements) into a single parallel execution framework during the same active period. By combining these measurements that previously required separate time slots, the total active period duration is reduced while maintaining measurement accuracy, allowing the station to return to idle mode sooner and extend idle mode time.
Solution Approach 2:
The patent enables continuous useful action by performing multiple measurements in parallel during a single active period rather than sequentially. This continuous utilization of the active period for multiple simultaneous measurements maximizes the efficiency of each wake-up event, reducing the frequency and duration of active periods needed to complete all required measurements.
3Duration of action of moving object
If multiple measurements are performed in parallel during active mode, then idle mode time is maximized, but measurement coordination complexity increases
Solution Approach 1:
The patent implements dynamic measurement coordination where the wireless station adaptively manages multiple parallel measurements based on current channel conditions, measurement priorities, and resource availability. This dynamic approach allows flexible allocation of measurement resources and timing, enabling complex parallel measurement operations to be coordinated efficiently without requiring overly rigid or complex predetermined scheduling structures.
Data Source
AI summary
A method to be performed by a wireless station having a wireless transceiver configured to establish a connection to a network, a processor and a non-transitory computer readable storage medium. The method includes receiving information during a first reception segment of a discontinuous reception cycle, wherein the discontinuous reception cycle includes the first reception segment and a first idle segment, performing a first measurement that begins during the first reception segment and performing a second measurement, wherein the second measurement begins prior to an end of the first measurement.