Grouped BWP Configuration for V2X Bandwidth Compatibility
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Solution Overview
Problem
In next-generation wireless communications systems like 5G, configuring V2X communication resources based on bandwidth capabilities of diverse terminal devices is challenging due to varying maximum bandwidths supported by different V2X terminal devices.
Innovation Solution
A method and apparatus that configures a same first BWP for all second communications devices in a group, ensuring they can communicate, with optional additional BWPs and V2X communication resource pools tailored to individual device capabilities and service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single wide bandwidth resource pool is configured for V2X communication, then high bandwidth devices can achieve high data rates, but low bandwidth devices cannot properly receive the communication signals
Solution Approach 1:
The patent segments the system bandwidth into multiple bandwidth parts (BWPs), each with different bandwidth sizes. Devices can be configured with appropriate BWPs matching their capabilities, allowing both high and low bandwidth devices to operate effectively within the same system without interference.
Solution Approach 2:
The patent introduces a new dimension for resource allocation by configuring multiple BWPs with different bandwidth characteristics. Instead of using a single bandwidth dimension, the system now operates in a multi-dimensional bandwidth space, allowing devices to select appropriate BWPs based on their capabilities and service requirements.
2Adaptability or versatility
If multiple BWPs are configured for each device based on individual capabilities, then bandwidth adaptability is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent creates a universal BWP configuration framework where a single BWP configuration can serve multiple devices with different bandwidth capabilities. The network device configures BWPs that can be universally applied across different device types, reducing the need for highly customized configurations for each device.
Solution Approach 2:
The patent changes the configuration parameters by introducing BWP-specific parameters such as bandwidth size, subcarrier spacing, and cyclic prefix length. These parameter changes allow flexible adaptation to different device capabilities while maintaining a standardized configuration approach through the BWP framework.
3Productivity
If bandwidth-specific configurations are implemented for different devices, then communication efficiency is improved, but signaling overhead for configuration and activation increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple BWPs for each device before actual communication occurs. The network device configures all necessary BWP parameters in advance, and devices store these configurations for quick activation. When communication needs to start, the network simply activates a pre-configured BWP using minimal signaling, avoiding the need to transmit full configuration details at activation time.
Data Source
AI summary
The method includes: determining, by a first communications device, a first BWP for each second communications device in a second communications device group, where the second communications device group includes two or more second communications devices, and the first BWPs of all the second communications devices in the second communications device group are the same; sending, by the first communications device, configuration information of the first BWP to each second communications device in the second communications device group; and sending, by the first communications device, control signaling to all the second communications devices in the second communications device group, where the control signaling is used to indicate all the second communications devices in the second communications device group to activate the first BWP.