D2D Relay Resource Pool Segmentation for SFN Interference
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing device-to-device (D2D) relay, particularly in configuring resource pools for D2D UE groups to facilitate single frequency network (SFN) relay, which affects the reliability and efficiency of D2D communication.
Innovation Solution
A method and apparatus for configuring a first resource pool specifically for D2D UE groups to perform SFN relay, using channel measurement information such as RSRP, RSRQ, or RSSI, and considering wide area network uplink timing, to enable efficient D2D relay operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single resource pool is used for both D2D communication and SFN relay, then device complexity is reduced, but interference between D2D communication and SFN relay increases
Solution Approach 1:
The patent divides the resource pool into two separate resource pools: a first resource pool for SFN relay operations and a second resource pool for D2D communication. This segmentation prevents interference between the two functions while maintaining manageable complexity through structured resource allocation.
Solution Approach 2:
Different resource pools are allocated with specific characteristics optimized for their respective functions. The first resource pool is configured for SFN relay with appropriate timing and frequency resources, while the second resource pool is configured for D2D communication, allowing each to operate with optimal local properties without mutual interference.
2Object-affected harmful factors
If separate resource pools are configured for D2D communication and SFN relay, then interference is reduced, but device complexity increases
Solution Approach 1:
The patent implements dynamic resource pool configuration where the first and second resource pools can be adaptively allocated and reconfigured based on network conditions, traffic demands, and service requirements. This dynamic approach manages complexity through flexible, condition-based resource management rather than static rigid allocation.
Solution Approach 2:
The resource pool parameters such as time-frequency resources, modulation schemes, and power levels are dynamically adjusted based on channel measurement information and network conditions. This allows the system to manage complexity through parameter optimization rather than structural complexity.
3Reliability
If channel measurement information is used for resource pool configuration, then communication reliability is improved, but measurement and configuration difficulty increases
Solution Approach 1:
The patent performs channel measurement information collection and analysis in advance to pre-configure the first and second resource pools. By conducting measurements preliminarily and using the results for resource pool configuration, the system improves reliability without adding real-time measurement complexity during actual communication operations.
Solution Approach 2:
The system automatically performs channel measurements, analyzes the information, and configures resource pools based on the measurements without requiring manual intervention. This self-service approach improves reliability through accurate measurement-based configuration while minimizing the operational difficulty for users and operators.
Data Source
AI summary
The present invention relates to a method and an apparatus for relay of a first device-to-device (D2D) terminal in a wireless communication system. Specifically, the present invention comprises the steps of: receiving settings regarding a D2D terminal group for single frequency network (SFN) relay; and performing SFN relay using a first resource pool set for SFN relay, wherein the first resource pool is set to be different from a second resource pool for D2D signal transmission of the first D2D terminal to a second D2D terminal.