Sidelink QoS Mapping for V2x Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sidelink communication frameworks in wireless networks lack performance indicators beyond ProSe per packet priority, limiting scheduling efficiency and the ability to meet specific reliability and data rate requirements for device-to-device communications, particularly in high-load scenarios like V2x communications.
Innovation Solution
Implementing a method where radio network nodes and wireless devices configure and report Quality of Service (QoS) requirements, including thresholds for data rate, reliability, and latency, by mapping logical channel groups for buffer status reporting, enabling more informed scheduling decisions and packet duplication strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only ProSe per packet priority is used as performance indicator, then the framework remains simple, but scheduling efficiency and ability to meet reliability and data rate requirements deteriorate
Solution Approach 1:
The patent segments QoS requirements into multiple independent indicators (data rate, reliability, latency) rather than using a single priority indicator. Each indicator is mapped to specific logical channel groups, allowing the system to address different QoS dimensions separately and efficiently
Solution Approach 2:
The patent changes the parameter set from a single priority value to multiple QoS parameters (data rate, reliability, latency). This transformation enables more precise control over communication performance by adjusting individual parameters rather than relying on a composite priority metric
2Productivity
If multiple QoS requirements are configured and reported, then scheduling efficiency and reliability improve, but the complexity of configuration and reporting increases
Solution Approach 1:
The patent creates a universal mapping framework where logical channel groups serve multiple functions: they organize traffic flows, indicate QoS requirements, and trigger appropriate scheduling decisions. This multi-functionality reduces the need for separate mechanisms for each QoS aspect
Solution Approach 2:
The patent introduces logical channel groups as an intermediary layer between physical channels and QoS requirements. This intermediary simplifies the mapping process by providing a structured intermediate representation that bridges the gap between multiple QoS parameters and radio resource allocation
3Productivity
If QoS-based scheduling is implemented, then resource allocation efficiency improves, but the complexity of resource management increases
Solution Approach 1:
The patent applies local quality by assigning different QoS characteristics to different logical channel groups. Each LCG can be optimized for specific QoS requirements (e.g., one LCG for high reliability, another for high data rate), allowing localized optimization without affecting the entire system
Data Source
AI summary
Embodiments includes methods for a wireless device configured for sidelink communication. Such methods include obtaining a packet of data for sidelink transmission. The packet is associated with a first QoS requirement of a first type and with a second QoS requirement of a second type. Such methods include mapping the packet to one or more of the following: a first LCG based on a first mapping between at least one QoS requirement of the first type and a first portion of a plurality of available LCGs, including the first LCG; and a second LCG based on a second mapping between at least one QoS requirement of the second type and a different second portion of the available LCGs, including the second LCG. Such methods include transmitting, to a radio network node, a sidelink BSR that indicates available data for the one or more LCGs to which the packet was mapped.