UE DRX Cycle Synchronization for Network Energy Saving
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing wireless signal transmission and reception procedures, particularly in managing network energy saving configurations and discontinuous reception patterns.
Innovation Solution
A method for user equipment (UE) in a wireless communication system to receive a network energy saving (NES)-related configuration and monitor downlink control information (DCI) based on a discontinuous reception (DRX) cycle in an RRC idle/inactive state, with the time period for applying the NES configuration determined as an integer multiple of the DRX cycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE continuously monitors DCI in RRC idle/inactive state, then the reliability of signal reception is improved, but the power consumption increases
Solution Approach 1:
The patent applies periodic action by implementing discontinuous reception (DRX) cycles where the UE monitors DCI only during specific active periods rather than continuously. The network transmits NES-related configuration information at periodic intervals, and the UE wakes up only to receive these periodic transmissions, significantly reducing power consumption while maintaining reliable communication through scheduled reception opportunities.
2Adaptability or versatility
If the network transmits NES-related configuration continuously, then the adaptability of energy saving is improved, but the loss of energy increases
Solution Approach 1:
The network applies periodic action by transmitting NES-related configuration information only at specific intervals rather than continuously. The discontinuous transmission pattern allows the network to maintain adaptability in energy saving operations while reducing overall energy consumption by keeping the transmission active only when necessary for configuration updates.
Solution Approach 2:
The network performs preliminary action by configuring DRX cycles and transmission timing in advance before actual communication occurs. This preconfiguration allows both network and UE to synchronize their energy saving operations, ensuring that configuration information is transmitted and received at optimal times without continuous network activity.
3Use of energy by moving object
If the DRX cycle is extended to reduce power consumption, then the energy efficiency is improved, but the response time increases
Solution Approach 1:
The patent applies dynamics by allowing flexible adjustment of DRX cycle lengths based on communication needs. The system can dynamically switch between longer DRX cycles for power saving during stable conditions and shorter cycles when faster response is required, optimizing the balance between energy efficiency and response time through adaptive configuration.
Data Source
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AI summary
A method for receiving a signal by a terminal (UE) in a wireless communication system according to an example of the present disclosure may comprise: receiving a network energy saving (NES)-related configuration from a network; and monitoring downlink control information (DCI) on the basis of a discontinuous reception (DRX) cycle in a radio resource control (RRC) idle/inactive state, wherein a time interval in which the NES-related configuration is to be applied in the RRC idle/inactive state is determined on the basis of an integer multiple of the DRX cycle.