Terminal BWP Switching for 5G Power Reduction
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Solution Overview
Problem
In 5G communication systems, terminals face high power consumption due to the need to support a maximum bandwidth of 400 MHz, and existing methods lack dynamic bandwidth allocation for Device-to-Device (D2D) communication systems, which hampers efficient resource management and power savings.
Innovation Solution
A method for resource switching and configuration that allows terminals to dynamically select and switch between pre-configured Bandwidth Parts (BWP) based on communication status information, including bandwidth, subcarrier spacing, and pilot configuration, enabling efficient allocation of resources and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal supports a maximum bandwidth of 400 MHz with a sampling rate corresponding to the full bandwidth, then the terminal can handle high data rates and large traffic volumes, but the power consumption of the terminal becomes relatively high
Solution Approach 1:
The patent divides the total bandwidth into multiple Bandwidth Parts (BWPs), each with different bandwidth sizes and sampling rates. The terminal can selectively activate only the BWP needed for current communication requirements, rather than maintaining full bandwidth capability continuously. This segmentation allows the terminal to handle high data rates when needed while consuming less power during normal operation.
Solution Approach 2:
The patent enables dynamic switching between different BWPs based on communication status. The terminal can transition from a first BWP to a second BWP when communication requirements change, allowing the system to adapt bandwidth allocation to actual needs rather than maintaining a fixed high-bandwidth configuration, thereby reducing power consumption during low-traffic periods.
2Use of energy by moving object
If a terminal dynamically switches between different Bandwidth Parts based on communication status, then power consumption is reduced and resource allocation efficiency is improved, but the device complexity increases due to multiple BWP configurations
Solution Approach 1:
The patent pre-configures multiple BWPs with different bandwidth parameters before actual communication occurs. By having these configurations ready in advance, the terminal can quickly switch between them based on communication status without performing complex real-time calculations, thereby reducing the computational complexity while still achieving dynamic power optimization.
3Productivity
If Bandwidth Part (BWP) allocation is introduced to enable dynamic bandwidth adjustment, then power consumption is reduced and resource management efficiency is improved, but the system complexity increases due to additional configuration and switching mechanisms
Solution Approach 1:
The patent changes key parameters such as bandwidth size, subcarrier spacing, and cyclic prefix length by switching between pre-configured BWPs. This allows the system to optimize resource allocation for different communication scenarios without requiring complex real-time parameter adjustments, thereby improving resource allocation efficiency while keeping the implementation relatively simple through predefined configurations.
Data Source
AI summary
The present disclosure relates to the technical field of communications, and disclosed thereby are a resource switching method and a resource allocation method, apparatus, device and system. The method comprises: when a terminal determines that a first BWP currently used needs to be switched, the terminal selects a second BWP among at least two BWPs configured in advance; and the terminal switches from the first BWP to the second BWP. By means of the present disclosure, a terminal may autonomously configure and switch BWPs without needing an access network device to specify the BWP for the terminal, and the BWP may be introduced into a communication system supporting large bandwidth such as D2D, thus reducing the power consumption of the terminal within the communication system, and ensuring that the communication of the terminal is effective by switching the BWP in time.