Uplink Backhaul Signal Timing Delay Compensation in Wireless Relay Systems

The patent segments the communication system into distinct functional parts: access links (eNodeB-RN and RN-UE) and backhaul links (eNodeB-RN). Each link type has its own subframe structure and resource allocation rules. This segmentation allows the system to manage complexity by treating different link types independently while maintaining overall system coordination through standardized subframe indexing and timing relationships.

The patent establishes preliminary timing relationships and subframe structures for uplink backhaul signals before actual transmission occurs. The eNodeB and relay node pre-coordinate their subframe indexing, timing delays, and resource allocations. This preliminary structuring enables efficient real-time transmission by eliminating the need for complex dynamic negotiations during operation, thus maintaining both deployment simplicity and transmission efficiency.

The patent implements a self-service timing synchronization mechanism where the relay node autonomously applies timing delay compensation based on pre-configured propagation delay values. The relay node independently adjusts its uplink backhaul signal transmission timing without requiring continuous real-time coordination with the eNodeB. This self-service approach improves reception accuracy while minimizing synchronization complexity by distributing the timing adjustment function to the relay node itself.