Relay Node Interference Control via Channel Coefficient Adjustment
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Solution Overview
Problem
In multi-hop networks, existing technologies face challenges in controlling interference between multiple node pairs and relay nodes, leading to signal interference and reduced connectivity as the number of concurrent transmissions increases.
Innovation Solution
The method involves relay nodes receiving symbols from source nodes, adjusting channel coefficients to remove interference channels, and relaying symbols to destination nodes using amplify-and-forward, quantize-and-forward, or compute-and-forward schemes, generating an end-to-end channel matrix to minimize interference during symbol transmission processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple node pairs transmit signals concurrently in a multi-hop network, then network connectivity and data transmission capacity are improved, but interference between node pairs and relay nodes increases
Solution Approach 1:
The patent adjusts channel coefficients as key parameters to control and eliminate interference channels. By dynamically changing these coefficients based on network conditions, the system enables concurrent transmissions while managing interference levels, thus resolving the contradiction between network connectivity and signal interference.
Solution Approach 2:
The patent implements a feedback mechanism where destination nodes send feedback information about received signals and interference conditions back to source nodes and relay nodes. This feedback loop allows the system to adaptively adjust transmission parameters and channel coefficients to maintain connectivity while minimizing interference.
2Reliability
If relay nodes adjust channel coefficients to remove interference channels, then signal quality and throughput are improved, but system complexity and computational requirements increase
Solution Approach 1:
The patent divides the interference cancellation process into distinct segments: receiving signals from source nodes, adjusting channel coefficients at relay nodes, and relaying processed signals to destination nodes. This segmentation allows each node to perform specific functions with manageable complexity rather than requiring all nodes to handle the entire interference management process.
Solution Approach 2:
Relay nodes act as intermediaries that perform channel coefficient adjustment and interference removal between source nodes and destination nodes. This intermediary role distributes the computational complexity across the network rather than concentrating it at end nodes, making the overall system more manageable.
3Productivity
If the number of concurrent symbol transmission processes is increased, then data transmission capacity is improved, but interference control difficulty and processing overhead increase
Solution Approach 1:
The patent structures transmissions as discrete symbol transmission processes that can be managed in periodic or sequential batches. By organizing concurrent transmissions into manageable processes with defined start and end points, the system can control interference on a per-process basis while maintaining high overall transmission capacity.
Data Source
AI summary
A method and apparatus to control interference in a relay node are provided and include simultaneously receiving a symbol from source nodes, adjusting channel coefficients; and relaying the symbol to destination nodes with adjusted channel coefficients. The simultaneously receiving and the relaying are performed during a symbol transmission process between the source and destination nodes.