Cell DTX Active Time Configuration for 5G Power Management
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Solution Overview
Problem
Current 5G mobile communication systems face high power consumption due to continuous operation of base stations, which increases management and maintenance costs, and there is a need for efficient power management techniques to reduce network power consumption.
Innovation Solution
Implementing cell discontinuous transmission (DTX) and discontinuous reception (DRX) schemes that periodically cut off power to transceivers, allowing base stations and user equipment (UE) to transition between active and non-active states based on configuration timers and messages, thereby reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base stations operate continuously to maintain communication availability, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements cell DTX operation where base stations periodically switch between active and non-active states. During non-active periods, the base station stops transmitting reference signals and reduces power consumption. The UE monitors PDCCH during active periods to maintain communication availability, thus resolving the contradiction between continuous operation reliability and power consumption reduction.
2Use of energy by moving object
If base stations reduce power consumption through cell DTX, then energy efficiency is improved, but communication responsiveness may deteriorate
Solution Approach 1:
The patent introduces dynamic switching between cell DTX and continuous operation modes based on UE location and traffic conditions. When UE is in idle state or low traffic conditions, cell DTX is activated for power saving. When UE moves or traffic increases, the system dynamically switches to continuous operation to maintain responsiveness, thus balancing power consumption and communication speed.
Solution Approach 2:
The system uses UE location information and traffic status as feedback to dynamically adjust base station operation mode. The network receives UE location reports and traffic status, then decides whether to activate cell DTX or maintain continuous operation, ensuring that power consumption is reduced without significantly impacting communication responsiveness when needed.
3Loss of energy
If cell DTX is activated to save power, then operational costs are reduced, but device complexity increases due to timer management
Solution Approach 1:
The patent implements self-service mechanisms where UEs autonomously determine whether to monitor PDCCH based on their location status and stored timer information. When UE is in idle state, it uses stored cell DTX timer values to determine monitoring behavior without continuous network intervention, reducing the complexity of centralized timer management while maintaining power savings.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure relates to a method performed by a terminal and the method comprises receiving, from a base station, a radio resource control (RRC) message including configuration information associated with cell DTX, in case that the cell DTX is configured for a serving cell, identifying whether one of a first timer associated with discontinuous reception (DRX) retransmission of downlink (DL) or a second timer associated with DRX retransmission of uplink (UL) is running on any serving cell in a DRX group of the serving cell, and monitoring, in case that one of the first timer or the second timer is running, a physical downlink control channel (PDCCH) on the serving cell in the DRX group.