Multi-Hop Relay Frame Structure for Legacy and New System Coexistence

The patent introduces a Relay Station (RS) as an intermediary between the fixed BS and MS. The RS receives signals from the BS and retransmits them to MS, enabling the fixed BS to communicate with mobile users while maintaining link reliability. This mediator allows the system to preserve the reliability of fixed infrastructure while gaining the flexibility of mobile relay nodes that can be dynamically positioned.

The patent implements a multi-hop relay architecture where RS and MS can dynamically change positions and roles. The system supports dynamic network reconfiguration where nodes can switch between transmitting and receiving modes, and relay stations can be mobile rather than fixed, allowing the network to adapt to changing traffic distribution and channel conditions while maintaining reliable communication links.

The patent segments the wireless communication system into distinct functional zones within the frame structure: access zones for direct BS-MS communication, relay zones for BS-RS communication, and forward zones for RS-MS communication. This segmentation allows each zone to be optimized independently for its specific function, managing the complexity of multi-hop relay operations by dividing the overall communication process into manageable, standardized segments.

The patent designs a universal frame structure that can accommodate multiple functions and different node types (BS, RS, MS) using the same basic framework. The frame includes various zones that can be dynamically allocated and configured depending on the specific communication needs, allowing the system to handle diverse scenarios (direct communication, relay communication, different hop configurations) with a single versatile structure rather than requiring separate specialized structures for each case.

The patent applies local quality by creating distinct zones within the frame structure that are optimized for different system requirements. The access zone, relay zone, and forward zone each have specific characteristics and protocols tailored to their function. This allows legacy systems to operate in designated zones with their original protocols while new systems can utilize other zones with updated protocols, enabling multi-system support without requiring complete redesign of the entire frame structure.

The patent implements a nested structure where the new system frame structure contains and integrates the legacy system frame structure. The legacy access and relay zones are nested within the overall frame, allowing legacy devices to operate using their conventional protocols while the new system adds forward zones and enhanced functionalities. This nesting approach enables backward compatibility while incorporating new capabilities, supporting both legacy and new systems coexisting in the same network.