Inter-UE Coordination Signaling for Sidelink Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 3GPP Release 17 sidelink enhancement aims to enhance reliability and reduce latency through inter-UE coordination, specifically studying the feasibility and benefits of determining a set of resources at UE-A and indicating them to UE-B for SL transmission, which is not adequately addressed in existing technologies.
Innovation Solution
The method and apparatus for inter-UE coordination signaling involve determining and indicating resource sets between UEs, enabling more efficient resource allocation and communication strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If coordination signaling is implemented between user equipment, then interference mitigation and spectral efficiency are improved, but device complexity and processing overhead increase
Solution Approach 1:
The coordination signaling is segmented into different types (e.g., Type 1 for channel state information, Type 2 for interference coordination) and transmitted through different channels or at different times. This segmentation allows the system to implement coordination functionality while managing device complexity by processing only relevant signal segments rather than handling all coordination information simultaneously.
Solution Approach 2:
Channel state information and interference coordination parameters are exchanged and processed in advance before actual data transmission. This preliminary action allows user equipment to pre-compute coordination strategies and pre-signal interference mitigation parameters, reducing real-time processing complexity while maintaining high spectral efficiency during actual data transmission.
2Object-affected harmful factors
If coordination signaling is implemented between user equipment, then interference mitigation is improved, but processing overhead and power consumption increase
Solution Approach 1:
User equipment autonomously performs interference measurement, channel state estimation, and coordination signal generation without requiring extensive network assistance. This self-service approach enables interference mitigation functionality while reducing overall system processing overhead and distributing power consumption across multiple devices rather than concentrating it in network infrastructure.
Solution Approach 2:
The system implements coordination signaling selectively based on interference conditions rather than continuously. When interference levels exceed thresholds, coordination signals are exchanged and processed; otherwise, normal operation continues without additional coordination overhead. This partial action approach maintains interference mitigation capability while minimizing unnecessary power consumption during low-interference periods.
Data Source
Figure 1
Figure 2
Figure 3
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. The present disclosure relates to methods and apparatuses for inter user equipment (UE) coordination signaling.