Relay Node Timing Alignment for Wireless Backhaul Latency

The patent replaces wired mechanical connections with wireless electromagnetic signal transmission. The relay node establishes wireless backhaul links to connect donor cells and user equipment, eliminating the need for physical cable infrastructure while maintaining communication functionality. This substitution reduces deployment complexity and costs while preserving transmission reliability through protocol-level synchronization mechanisms.

The patent implements preliminary timing advance adjustments where the relay node calculates and applies timing offsets before actual data transmission. By pre-synchronizing the timing of uplink and downlink signals and adjusting transmission moments in advance, the system compensates for wireless propagation delays, ensuring that data packets arrive at their destinations within expected time windows despite the wireless medium's inherent latency.

The patent introduces a relay node as an intermediary between the donor base station and user equipment. This intermediary handles timing alignment by receiving synchronized downlink signals from the donor, applying appropriate timing offsets, and forwarding aligned signals to user equipment. The relay node acts as a mediator that absorbs the complexity of timing management, allowing the donor base station to maintain simple broadcast synchronization while ensuring efficient aligned reception at the user equipment.