Device-to-Device QoS Flow Mapping for V2X Broadcast and Groupcast
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Solution Overview
Problem
Existing wireless communication systems, particularly in V2X technology, face limitations in message transmission distance due to constraints in dedicated short-range communication techniques like WAVE, necessitating improvements for enhanced device-to-device communication.
Innovation Solution
A method for device-to-device communication using broadcast and groupcast based on quality-of-service (QoS) flows, involving a V2X layer that allocates QoS flow IDs (QFIs) for PC5 unicast, broadcast, and groupcast communications, utilizing preconfigured or network-provided information to determine and apply appropriate communication modes and QoS parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If dedicated short-range communication techniques like WAVE are used for V2X, then device-to-device communication is enabled, but message transmission distance is limited
Solution Approach 1:
The patent segments communication into multiple modes (broadcast, groupcast, unicast) with different QoS parameters. Broadcast mode covers wider area for extended transmission distance, while groupcast and unicast provide higher reliability for specific receivers. This segmentation allows the system to trade off between distance and reliability based on communication mode.
Solution Approach 2:
The patent changes QoS parameters (priority, packet error rate, latency) based on communication mode. Broadcast uses parameters optimized for wide coverage and distance, while groupcast and unicast use parameters optimized for reliability. This dynamic parameter adjustment resolves the contradiction between transmission distance and communication reliability.
2Length of moving object
If QoS parameters are optimized for broadcast and groupcast, then communication range is enhanced, but system complexity increases
Solution Approach 1:
The patent pre-configures QoS parameters and communication mode selection criteria before actual communication occurs. The V2X layer is pre-equipped with multiple QoS parameter sets for different modes, eliminating the need for complex real-time decision-making. This preliminary preparation reduces system complexity while maintaining extended communication range capabilities.
Solution Approach 2:
The patent creates a universal V2X communication framework that handles multiple communication modes (broadcast, groupcast, unicast) through a single layered architecture. The V2X layer provides multi-functionality by managing all communication types with unified QoS parameter management, reducing overall system complexity despite supporting multiple modes with different ranges.
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. One embodiment relates to a method and a device for processing an encoded UDC header in a next-generation mobile communication system.