Header Terminal Sidelink Resource Configuration for V2X
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Solution Overview
Problem
In Vehicle to Everything (V2X) scenarios, sidelink resource conflicts arise when terminals in a terminal group move and change cells, leading to inconsistent sidelink resource allocation and reduced transmission efficiency.
Innovation Solution
A method where the header terminal in a terminal group sends an identifier of the first cell to other terminals when its serving cell changes, allowing these terminals to acquire a corresponding sidelink resource pool for coordinated sidelink data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals in a terminal group move and change cells independently, then terminals can maintain connection with their respective cells, but sidelink resource allocation becomes inconsistent and resource conflicts arise
Solution Approach 1:
The patent merges the sidelink resource allocation decisions of all terminals in the terminal group by designating a header terminal that sends unified sidelink resource allocation information to all other terminals. This ensures that even when terminals are in different cells, they use consistent sidelink resources, preventing resource conflicts while maintaining connection reliability.
Solution Approach 2:
The patent segments the terminal group into a header terminal and other terminals, where the header terminal is responsible for acquiring sidelink resource allocation information from the network and distributing it to other terminals. This segmentation allows coordinated resource allocation while accommodating independent cell changes of individual terminals.
2Adaptability or versatility
If each terminal acquires sidelink resource allocation information independently from its own cell, then terminals can adapt to local cell conditions, but resource conflicts occur when terminals in the same terminal group use different resources
Solution Approach 1:
The patent combines the sidelink resource allocation information from all terminals into a unified allocation scheme by having the header terminal acquire and distribute the resource allocation information. This ensures resource allocation consistency across the terminal group while allowing the header terminal to adapt to its current cell conditions.
3Reliability
If the header terminal sends cell identifier to other terminals when serving cell changes, then all terminals can acquire consistent sidelink resource pool, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential cell identifier information from the header terminal and sends it to other terminals when a serving cell change occurs. This minimal signaling approach maintains resource allocation consistency while minimizing signaling overhead, as only the necessary cell identification data is transmitted rather than complete resource allocation information.
Data Source
AI summary
A method of configuring sidelink resource is provided, which belongs to the technical field of wireless communication. The method is performed by a header terminal in a terminal group, and the method includes: when a serving cell of the header terminal is changed to a first cell, an identifier of the first cell is sent to other terminals in the terminal group. The identifier of the first cell is sent by the header terminal, so that a first terminal can receive the identifier of the first cell and acquire a first sidelink resource pool that the first terminal is to use when transmitting sidelink data.