D2D Resource Allocation Patterns for Low Latency V2X
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile telecommunications systems, particularly LTE networks, face limitations in network capacity and geographical coverage, especially in high-load situations and when devices are outside coverage areas, and existing D2D communication technologies are not suited for low-latency, high-reliability requirements of V2X communications.
Innovation Solution
A method of transmitting data using predetermined patterns of communications resources within a wireless access interface, pre-configured in both infrastructure equipment and terminals, to reduce latency and signaling overhead, allowing for efficient device-to-device communications and vehicle-to-everything (V2X) communications by allocating resources semi-persistently or in response to requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device-to-device communications are introduced to extend coverage and capacity, then network capacity and geographical coverage are improved, but transmission delay increases due to dynamic resource allocation and signaling overhead
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple resource patterns in both the base station and terminal devices before actual D2D communication occurs. When D2D communication is needed, the terminal can immediately select from pre-configured patterns without waiting for dynamic resource allocation, thereby reducing transmission delay while maintaining improved network capacity through D2D capabilities.
2Productivity
If dynamic resource allocation is used for D2D communications, then resource utilization efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent reduces signaling overhead by pre-configuring multiple resource patterns during initial connection setup. Instead of dynamically allocating resources through continuous signaling exchanges, the base station and terminal store multiple pre-agreed patterns. When D2D communication is required, the terminal selects from these pre-configured patterns with minimal signaling, thus maintaining resource utilization efficiency while significantly reducing ongoing signaling overhead.
3Area of stationary object
If existing D2D communication technologies are used, then device coverage extension is achieved, but latency requirements for V2X communications are not met
Solution Approach 1:
The patent meets low latency requirements for V2X communications while maintaining extended coverage by pre-configuring multiple resource patterns including those optimized for low-latency scenarios. Terminal devices can immediately select from these pre-configured patterns without waiting for dynamic allocation, ensuring that both coverage extension and low latency requirements are satisfied simultaneously.
Data Source
AI summary
A method of transmitting data from a first communications terminal to one or more second communications terminals includes receiving from an infrastructure equipment forming part of a wireless communications network an indication identifying a predetermined pattern of communications resources of a wireless access interface. The wireless access interface provides plural communications resources divided into time divided units. The method also includes transmitting the data in some or all of the predetermined pattern of communications resources to one or more of the second communications terminals in accordance with device to device communications. The predetermined pattern of communications resources is one of plural patterns of communications resources of the wireless access interface for plural of the time divided units. The plural patterns of communications resources are predetermined for a reduction in latency when transmitting the data from the first communications terminal and/or reducing in signaling overhead required to transmit the data.