Relay Station Handover for Multi-Hop Delay Optimization
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Solution Overview
Problem
In multi-hop communication systems, effective topology management is crucial for improving real-time service quality, but existing systems face challenges in efficiently managing relay stations to optimize hop counts and end-to-end delays, leading to suboptimal performance.
Innovation Solution
A relay station is equipped with an information receiver to gather hop-count and end-to-end delay information, a selector to choose the optimal connection target relay station based on this data, and a handover controller to manage delays by transferring connections to a better-performing relay station when thresholds are exceeded, ensuring improved communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay stations are added to expand coverage in multi-hop communication systems, then the coverage area is improved, but the hop count and end-to-end delay increase
Solution Approach 1:
The system performs preliminary actions by having relay stations proactively discover and evaluate multiple potential parent relay stations before connection is needed. Each relay station collects hop-count information and end-to-end delay measurements from candidate parent stations, preparing a list of optimal connection targets in advance. This allows the system to quickly switch to the best available path when needed, rather than reacting to delay issues after they occur.
Solution Approach 2:
The system implements dynamic parent relay station selection where relay stations can switch between different parent stations based on real-time network conditions. The parent station selection is not fixed but adapts to changing hop counts and delay characteristics. This dynamic approach allows the network to optimize performance by selecting the best parent station at each moment, balancing coverage expansion with delay minimization.
2Length of stationary object
If relay stations connect through multiple hops to extend range, then the communication range is improved, but the topology management complexity increases
Solution Approach 1:
Each relay station autonomously performs topology management tasks without requiring centralized control. Individual relay stations independently discover parent stations, evaluate connection quality based on hop-count and delay metrics, and make connection decisions on their own. This self-service approach simplifies overall topology management by distributing the complexity across individual nodes rather than requiring complex centralized management.
Solution Approach 2:
The system implements feedback mechanisms where relay stations continuously monitor hop-count information and end-to-end delay metrics from their connections. This feedback is used to dynamically adjust parent station selections and optimize the multi-hop topology. The feedback loop allows the network to self-correct and adapt to changing conditions, reducing the complexity of manual topology management.
3Stability of the object's composition
If relay stations use fixed parent station assignments, then the system stability is improved, but the service quality for real-time services deteriorates
Solution Approach 1:
The system transitions from static to dynamic parent station assignment. Instead of fixed assignments, relay stations continuously evaluate potential parent stations based on real-time hop-count and delay measurements. This dynamic reassignment capability allows the system to maintain stability through adaptive selection while improving service quality by choosing the最优 parent station for each moment, particularly benefiting real-time services that require low and consistent delay.
Solution Approach 2:
The system changes the selection parameters for parent station assignment based on service requirements. For real-time services, the system prioritizes parent stations with minimum end-to-end delay, while for other services, different parameters may be weighted. This parameter-based selection allows the system to optimize for different service qualities while maintaining overall stability through consistent evaluation criteria.
Data Source
AI summary
A replay station and a method of operating the relay station in a multi-hop communication system are provided. A method of operating a relay station of a multi-hop communication system includes monitoring a delay of the relay station, determining whether the monitored delay exceeds a predetermined threshold, and controlling the relay station to be handed over to another upper relay station that is different from a connecting upper relay station.