Sidelink Groupcast Resource Scheduling with Adaptive Transmission Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing 5G sidelink groupcast communication lacks an explicit protocol for efficient scheduling of sidelink resources, hindering effective communication between vehicles participating in platooning.
Innovation Solution
A method for configuring sidelink groupcast communication involving a sidelink groupcast header (SGH) that determines a transmission mode, transmits messages to a base station for resource allocation, and performs communication with group members using allocated sidelink resources, utilizing group RNTIs and capability information exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink groupcast communication is performed without an explicit protocol, then communication can be established between vehicles, but scheduling operation of sidelink resources cannot be efficiently performed
Solution Approach 1:
The patent applies parameter changes by introducing specific transmission modes (TM1-TM4) that define different resource scheduling behaviors. The SGH reports its supported TMs to the base station, which then allocates resources based on the reported capabilities. This parameter-based approach allows efficient scheduling without requiring complex explicit protocols, as the scheduling behavior is determined by the TM parameters selected by the SGH and allocated by the base station.
2Adaptability or versatility
If the SGH autonomously selects sidelink resources, then scheduling flexibility is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent implements dynamics by providing multiple transmission modes with different degrees of autonomy. In TM1, the SGH fully autonomously selects resources for maximum flexibility. In TM2, the SGH supports base-station-assisted selection. In TM3, the SGH uses pre-configured resources. In TM4, the base station performs centralized scheduling. This dynamic selection of scheduling approaches allows the system to adapt between autonomy and efficiency based on the operating scenario.
3Adaptability or versatility
If multiple transmission modes are supported, then adaptability to different communication scenarios is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the resource scheduling function into distinct transmission modes (TM1-TM4), each handling a specific scheduling scenario. The SGH reports which TMs it supports to the base station, and the base station allocates resources accordingly. This segmentation allows the system to handle different communication scenarios with appropriate simplified procedures rather than requiring a single complex protocol to handle all cases.
Data Source
AI summary
Disclosed are a method and a device for sidelink groupcast communication. An operation method of an SGH comprises the steps of: determining a TM for communication with one or more SGMs belonging to an SG group; transmitting a message including the TM to a base station connected to the SGH; receiving, from the base station, configuration information of sidelink resources allocated according to the TM; and performing communication with the one or more SGMs by using the sidelink resources allocated by the base station. Therefore, communication system performance can be improved.