Sidelink Bandwidth Part Switching for V2V Efficiency
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently managing bandwidth and optimizing communication protocols for diverse wireless devices and technologies, particularly in scenarios like vehicle-to-vehicle (V2V) communication, where traditional methods may lead to suboptimal performance due to varying traffic conditions and device capabilities.
Innovation Solution
The implementation of bandwidth part switching techniques, which allow for dynamic configuration and adaptation of bandwidth parts in wireless devices and base stations, enabling flexible communication protocols that adjust based on traffic load, device capabilities, and specific communication scenarios such as V2V, to optimize data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional fixed bandwidth allocation methods are used, then device compatibility is maintained, but communication efficiency deteriorates under varying traffic conditions
Solution Approach 1:
The patent implements dynamic bandwidth part switching that allows the system to adapt bandwidth allocation based on real-time traffic conditions. The network can switch between different bandwidth parts (e.g., 100 MHz for high traffic, 50 MHz for low traffic) to optimize communication efficiency while maintaining device compatibility through standardized switching mechanisms.
Solution Approach 2:
The patent changes the bandwidth parameter dynamically by configuring multiple bandwidth parts with different bandwidth values (e.g., 100 MHz, 50 MHz, 25 MHz). The system selects appropriate bandwidth parts based on traffic load, device capabilities, and service requirements, thereby improving communication efficiency without sacrificing adaptability.
2Productivity
If bandwidth is increased to improve data transmission rates, then productivity increases, but energy consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth adjustment where the system switches to higher bandwidth parts (e.g., 100 MHz) when high data transmission rates are needed, and switches to lower bandwidth parts (e.g., 25 MHz, 50 MHz) when traffic load is low, thereby optimizing the trade-off between productivity and energy consumption based on actual network conditions.
Solution Approach 2:
The patent changes the bandwidth parameter according to traffic conditions and device capabilities. By configuring multiple bandwidth parts with different bandwidth values and selectively activating appropriate parts, the system achieves variable data transmission rates that match actual needs, avoiding unnecessary energy consumption while maintaining high productivity when required.
3Adaptability or versatility
If multiple bandwidth parts are configured to improve adaptability, then system complexity increases
Solution Approach 1:
The patent segments the total bandwidth into multiple discrete bandwidth parts (e.g., 100 MHz, 50 MHz, 25 MHz parts) that can be independently configured and switched. This segmentation allows the system to achieve high adaptability through standardized, modular bandwidth configurations while managing complexity through structured part definitions and switching mechanisms.
Data Source
AI summary
A wireless device receives one or more messages comprising configuration parameters. The configuration parameters indicate: a first plurality of bandwidth parts (BWPs) of a Uu link; and a second plurality of BWPs of a sidelink. A downlink control information (DCI) is received. The DCI indicates a first BWP of the first plurality of BWPs. The wireless device selects a second BWP, from the second plurality of BWPs, associated with the first BWP. In response to the reception of the DCI: the first BWP is activated; and the second BWP is activated.