Bandwidth Allocation via DRX Indication for Power Efficiency
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Solution Overview
Problem
In the New Radio (NR) system, terminal devices face unnecessary power consumption due to maintaining the whole radio frequency bandwidth during Discontinuous Reception (DRX) cycles, even when data volume is small, which is not efficiently managed by existing bandwidth allocation methods.
Innovation Solution
A bandwidth allocation method where a network device sends DRX indication information to a terminal device to determine a working bandwidth within a DRX cycle, allowing the terminal device to adjust its frequency usage based on data volume, thereby reducing power consumption and enabling load balancing and flexible network scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device opens the whole radio frequency bandwidth during On Duration of DRX cycle, then the data transmission capability is ensured, but the power consumption increases unnecessarily when data volume is small
Solution Approach 1:
The patent divides the radio frequency bandwidth into multiple bandwidth parts (BWPs), each with different bandwidth sizes. Instead of activating the entire bandwidth, the terminal device activates only the required BWP based on data volume, thereby segmenting the bandwidth resource to reduce power consumption while maintaining adequate transmission capability.
Solution Approach 2:
The patent enables dynamic switching between different bandwidth parts based on real-time data volume requirements. The terminal device can flexibly adjust the active bandwidth by switching between BWPs, making the bandwidth allocation dynamic rather than static, thus optimizing power consumption according to actual needs.
2Device complexity
If the terminal device uses fixed bandwidth allocation during DRX cycle, then the system complexity is reduced, but the adaptability to different data volumes and service changes is poor
Solution Approach 1:
The patent pre-configures multiple bandwidth parts with different bandwidth sizes before DRX operation. These BWPs are prepared in advance with predetermined parameters, allowing the terminal device to quickly switch between them based on data volume without complex real-time calculations, thus maintaining low system complexity while achieving good adaptability.
Solution Approach 2:
The patent changes the bandwidth parameter by switching between different predefined bandwidth parts. Instead of dynamically calculating optimal bandwidth, the system changes discrete bandwidth parameters by selecting from pre-configured BWP options, simplifying the control mechanism while adapting to different service requirements.
Data Source
AI summary
The application provides a bandwidth allocation method and device. The method includes that: Discontinuous Reception (DRX) indication information is determined, the DRX indication information being used for a terminal device to determine a working bandwidth to be used within a DRX cycle and/or a frequency point of the working bandwidth; and the DRX indication information is transmitted to the terminal device. According to the bandwidth allocation method of the embodiments of the application, unnecessary power consumption of the terminal device may be avoided.