Bandwidth Part Dormant Mode Switching for Power Saving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in power saving efficiency, particularly in next-generation radio access technologies like NR, where efficient dormant operation and BWP management are needed to balance power consumption and performance.
Innovation Solution
The introduction of a dormant operation mode and BWP operation method in the NR system, allowing for dynamic switching between normal and dormant states, with specific configurations and timers to manage PDCCH monitoring and resource allocation, optimizing power usage without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDCCH monitoring is continuously performed in normal operation mode, then system performance and reliability are maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between normal operation mode (with PDCCH monitoring) and dormant operation mode (without PDCCH monitoring) based on traffic conditions and network state. This allows the system to adapt its power consumption level to actual needs, maintaining high reliability when required while saving power during low-activity periods.
Solution Approach 2:
The patent introduces periodic BWP switching between dormant and normal modes, controlled by timers and network configuration. The UE periodically transitions between monitoring and non-monitoring states, achieving a balance between power saving and performance maintenance through rhythmic activation of PDCCH monitoring.
2Use of energy by moving object
If dormant operation mode is activated to save power, then power consumption is reduced, but activation and deactivation speed may be affected
Solution Approach 1:
The patent configures BWPs in advance with specific parameters including dormant and normal modes, along with associated timers and switching conditions. This preliminary configuration allows the UE to rapidly switch between modes without extensive setup time, as the operational parameters are pre-established by the network.
Solution Approach 2:
The patent enables dynamic mode switching between dormant and normal operation based on real-time conditions. The UE can quickly transition from dormant mode to normal mode when traffic arrives or network conditions change, ensuring rapid activation while maintaining power-saving benefits during idle periods.
3Use of energy by moving object
If BWP switching is implemented for dormant operation, then power saving is achieved, but device complexity increases
Solution Approach 1:
The patent uses a unified BWP framework that serves multiple functions: it defines frequency resources, configures dormant/normal modes, sets timers, and controls switching behavior. This multi-functional approach consolidates what could be separate complex mechanisms into a single versatile structure, reducing overall system complexity while achieving power saving goals.
Data Source
AI summary
The present disclosure provides a method by which a terminal, in which a primary cell and a secondary cell are set, activate a bandwidth part (BWP) in a wireless communication system, comprising: receiving downlink control information (DCI) from a network, the DCI notifying the terminal of the separation of the secondary cell from the dormant BWP; and activating a specific BWP of the secondary cell on the basis of the DCI, the specific BWP being a BWP set by upper layer signaling received through the terminal.