Mobile Relay Node Synchronization Configuration for Wireless Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next generation wireless communication systems require efficient synchronization configuration for mobile relay nodes to maintain communication quality and adapt to changing environments, such as fast-moving objects, while minimizing latency and signal interference.
Innovation Solution
A method and apparatus for configuring synchronization in a wireless communication system, where a relay node transitions from first backhaul link synchronization to second backhaul link synchronization, transmitting change initiation information to user equipment (UE), setting frame synchronization, and transmitting a synchronization signal to establish second access link synchronization, with parameters like Timing Advance and power control factors, and potentially performing handover between base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mobile relay node maintains first backhaul link synchronization with a base station, then communication stability is improved, but the system cannot adapt to fast-moving environments or handover scenarios
Solution Approach 1:
The patent implements dynamic synchronization configuration by enabling the mobile relay node to switch between first and second backhaul link synchronizations based on movement state and handover requirements. The system dynamically adjusts synchronization parameters including frame structure configuration, subframe allocation, and timing advance values to adapt to changing environmental conditions while maintaining communication reliability.
2Adaptability or versatility
If the relay node performs handover to a second base station with different frame synchronization, then adaptability to changing environments is improved, but communication latency increases due to synchronization reconfiguration
Solution Approach 1:
The patent applies preliminary action by pre-configuring second backhaul link synchronization parameters before handover is triggered. When handover conditions are detected, the mobile relay node already has the necessary synchronization configuration ready, allowing for rapid switching to the second base station without extensive reconfiguration delays. This includes pre-establishing frame structure parameters, subframe allocations, and timing advance values for the target base station.
3Adaptability or versatility
If the system uses different frame structures for backhaul and access links, then flexibility in network configuration is improved, but signal interference and synchronization complexity increase
Solution Approach 1:
The patent implements local quality by configuring different frame structures for specific links based on their functional requirements. The backhaul link uses a first frame structure optimized for relay-to-base-station communication, while the access link uses a second frame structure optimized for relay-to-UE communication. The mobile relay node independently manages synchronization parameters for each link, allowing flexible configuration while maintaining clear separation of concerns and reducing overall system complexity through localized optimization.
Data Source
AI summary
A method for transmitting and receiving a signal by a relay node in a wireless communication system is disclosed. More particularly, the method comprises the steps of: during communication on the basis of a first backhaul link synchronization and a first access link synchronization, transmitting, to a terminal, information about change initiation to a second backhaul link synchronization; configuring a frame synchronization from the first backhaul link synchronization; and in order to configure to the terminal a second access link synchronization determined on the basis of the second backhaul link synchronization, transmitting a synchronization signal to the terminal.