Bandwidth Part Configuration for Wireless Terminal Power Reduction
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Solution Overview
Problem
In 5G wireless communication systems, wide bandwidth data communication increases terminal power consumption and inefficiency due to the need for terminals to receive signals across the entire system bandwidth, which is not always supported by the terminal's capabilities.
Innovation Solution
The system adaptively determines and communicates the utilization bandwidth between the base station and terminal, allowing the terminal to efficiently operate by receiving signals only through a bandwidth it supports, reducing power consumption and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal communicates through the entire system bandwidth, then the data communication rate increases, but the terminal power consumption increases
Solution Approach 1:
The system bandwidth is segmented into multiple bandwidth parts (BWPs), each representing a subset of the total system bandwidth. The terminal is configured with specific BWPs based on its capabilities, allowing it to communicate through divided bandwidth segments rather than the entire system bandwidth, thus reducing power consumption while maintaining adequate data communication rates
Solution Approach 2:
The terminal's active bandwidth is dynamically adjusted based on its capability information and traffic requirements. The network can reconfigure the terminal's BWPs adaptively, enabling the terminal to use wider bandwidth when high data rates are needed and narrower bandwidth when power saving is prioritized, making the bandwidth utilization flexible and dynamic
2Area of stationary object
If the terminal receives signals across the entire system bandwidth, then the data communication coverage increases, but the terminal power consumption increases
Solution Approach 1:
The system bandwidth is divided into multiple bandwidth parts (BWPs), allowing the terminal to receive signals through selected subsets of the total bandwidth rather than the entire system bandwidth. This segmentation enables the terminal to limit its signal reception to only the necessary frequency resources, reducing power consumption while maintaining adequate communication coverage
Solution Approach 2:
Different bandwidth parts are assigned to different terminals based on their specific capability requirements. Each terminal receives high-quality signal coverage in its allocated local bandwidth region rather than attempting to receive across the entire system bandwidth, optimizing the local reception quality for each terminal's needs
3Adaptability or versatility
If the terminal supports wide bandwidth, then the data communication capability increases, but the device complexity increases
Solution Approach 1:
The wide system bandwidth is segmented into multiple manageable bandwidth parts (BWPs). Instead of requiring the terminal to process the entire wide bandwidth simultaneously, the terminal only needs to handle its assigned BWP(s), which are narrower and less complex to process, thereby reducing device complexity while still supporting wide bandwidth communication when needed
Solution Approach 2:
The bandwidth part mechanism provides a universal framework that can accommodate terminals with different capability levels. The same BWP configuration system serves both terminals with limited bandwidth support and terminals capable of handling wider bandwidths, making the system universally applicable across diverse terminal types without requiring separate complex processing paths
Data Source
AI summary
The disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). Provided are an apparatus and a method for determining a bandwidth in a wireless communication system. A method of operating a base station (BS) in a wireless communication system includes: receiving information on a bandwidth supporting capability of a terminal from the terminal; transmitting information on at least one candidate bandwidth corresponding to the bandwidth supporting capability to the terminal; and transmitting information indicating a utilization bandwidth of the terminal among the at least one candidate bandwidth to the terminal. Accordingly, it is possible to reduce power consumption of the terminal and overhead for a bandwidth indication.