Base Station Relay Mode Control via Backhaul Error Detection
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Solution Overview
Problem
Current communication systems lack specific conditions for Base Station (BS) relay mode operation, leading to interference with other Relay Stations and reduced transmission efficiency when switching to relay mode.
Innovation Solution
A method and apparatus for controlling a BS to detect backhaul communication errors, select a neighbor BS as a target, and convert to relay mode, providing a relay service by connecting with the target BS and managing communication with Mobile Stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a BS converts to relay mode without specific conditions, then service coverage extension is achieved, but interference with other RS occurs and transmission efficiency decreases
Solution Approach 1:
The patent changes the operational parameters of the BS by introducing specific triggering conditions (backhaul communication interruption) and operational constraints (frequency exclusion, power control) that govern when and how a BS converts to relay mode. This ensures coverage extension only when necessary and under controlled conditions that prevent interference with existing RS operations.
Solution Approach 2:
The patent introduces an intermediary control mechanism where the BS receives and processes control information from the network side before converting to relay mode. This intermediary step ensures that the conversion decision coordinates with overall network status, preventing conflicts with other RS and maintaining transmission efficiency while extending coverage.
2Reliability
If a BS operates in relay mode without specific conditions, then network reliability is improved, but interference with other RS increases
Solution Approach 1:
The patent changes the operational state parameters by defining specific triggering conditions (backhaul interruption detection) and operational constraints (frequency selection, power control) that enable reliable relay operation only when necessary, while preventing harmful interference through parameter optimization and coordination with network control.
Solution Approach 2:
The patent implements feedback mechanisms where the BS continuously monitors backhaul communication status and receives control information from the network. This feedback loop ensures that relay mode activation is based on actual network conditions, improving reliability when needed while preventing interference through coordinated decision-making with the network controller.
3Area of stationary object
If a BS converts to relay mode without specific conditions, then service coverage extension is achieved, but coordination with network status deteriorates
Solution Approach 1:
The patent introduces network-side control information as an intermediary that mediates between the BS's local decision-making and overall network status. This intermediary mechanism simplifies the BS's complexity by providing pre-coordinated conversion conditions and control parameters, enabling coverage extension while maintaining network coordination without requiring complex distributed algorithms.
Solution Approach 2:
The patent applies preliminary action by having the network side prepare and transmit control information for relay mode conversion in advance. This allows the BS to convert to relay mode smoothly when conditions are met, achieving coverage extension while maintaining coordination with network status without requiring complex real-time negotiation or decision-making at the BS level.
Data Source
AI summary
An apparatus and a method for providing a relay service in a Base Station (BS) of a communication system are provided. The method includes detecting a communication state with a backhaul of the communication system, transmitting backhaul error occurrence information to at least one Mobile Station (MS) located in a service coverage area when communication with the backhaul is interrupted, selecting a neighbor BS from among one or more neighbor BSs as a target BS, and providing a relay service by connecting with the target BS.