Dynamic Channel Allocation for Wireless Point-to-Point Links
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Solution Overview
Problem
Existing wireless point-to-point communication systems face interference issues due to narrow beams from dish antennas, especially when links are close in angular separation, leading to inefficient frequency reuse and wasted spectral resources.
Innovation Solution
A method for automatic channel parameter allocation in multi-link wireless networks, which estimates signal attenuation and dynamically adjusts transmission channel parameters to minimize mutual interference, allowing for optimized channel allocation and reuse of frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If permanent frequencies are assigned to each point-to-point wireless link using rules of thumb, then interference between links is controlled, but spectral resources are wasted and frequency reuse is inefficient
Solution Approach 1:
The patent implements dynamic frequency assignment where transmission parameters including frequency are continuously adjusted based on real-time channel conditions and interference levels. Instead of permanent static assignments, the system monitors link quality metrics and automatically reassigns frequencies to optimize spectral utilization while maintaining interference control thresholds.
Solution Approach 2:
The system changes transmission parameters dynamically by calculating optimal frequency assignments based on current network state. The controller computes new parameter sets including frequency, power, and modulation schemes, then instructs communication nodes to switch to optimized parameters, thereby improving frequency reuse efficiency while controlling interference.
2Strength
If narrow beams are used from dish antennas, then gain is improved and interference is reduced, but frequency reuse becomes limited when links are in similar directions
Solution Approach 1:
The patent applies local quality by assigning different frequency channels to specific geographic locations or directional sectors rather than uniformly across the network. The system evaluates interference patterns from dish antennas in similar directions and locally optimizes frequency assignment for each link based on its specific angular separation and interference exposure, enabling improved frequency reuse while maintaining the benefits of narrow beam focusing.
3Stability of the object's composition
If transmission parameters are fixed after initial allocation, then network stability is maintained, but network capacity cannot be optimized under changing conditions
Solution Approach 1:
The patent implements feedback mechanisms where communication nodes continuously monitor transmission channel quality and report metrics to a central controller. The controller processes this feedback information and dynamically adjusts transmission parameters including frequency assignment to optimize network capacity while maintaining stability through controlled, incremental changes based on actual network conditions.
Data Source
AI summary
A method for a network controller to carry out automatic channel allocation for a network of wireless communication links between communication nodes, the method including determining an estimated signal attenuation between communication nodes in a network, allocating wireless channels, determined by a set of transmission parameters, to a plurality of wireless communication links in the network, based, at least in part, on the estimated signal attenuation, sending a message to a first communication node, the message instructing the first communication node to use a set of transmission parameters for communicating a first wireless communication link connecting the first communication node to a second communication node at an opposite end of the first wireless communication link, the transmission parameters based, at least in part, on the allocating wireless channels. Related apparatus and methods are also described.