Wireless Network Channel Allocation via Dynamic Power Control
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Solution Overview
Problem
Existing wireless networks face challenges in optimizing the number of transmit nodes that can transmit data signals effectively due to interference, with current methods not fully integrating power control and channel assignment to maximize network capacity and minimize interference.
Innovation Solution
A method that determines the communication link gain for each data signal and forms sets of transmit nodes that a receive node can tolerate, allowing for the allocation of communication channels to these nodes to maximize the number of transmit nodes permitted to transmit data signals while minimizing interference, using techniques like beamforming and power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If more transmit nodes are allowed to transmit data signals simultaneously, then network capacity and spatial reuse are improved, but interference to receive nodes increases
Solution Approach 1:
The patent changes the parameter of transmit power dynamically by determining a maximum permissible transmit power for each transmit node based on its position relative to receive nodes and other transmit nodes. This power control mechanism allows more nodes to transmit simultaneously (improving network capacity) while maintaining interference levels within acceptable thresholds.
Solution Approach 2:
The patent implements dynamic power adjustment where transmit power levels are not fixed but are determined adaptively based on current network conditions, including the positions and activities of other transmit nodes. This dynamic approach enables the system to optimize network capacity in real-time while managing interference fluctuations.
2Length of stationary object
If transmit power is increased to extend communication range, then signal coverage is improved, but interference to other receive nodes increases
Solution Approach 1:
The patent dynamically adjusts the transmit power parameter based on the determined maximum permissible power for each transmit node. This ensures that transmit power is optimized to achieve adequate communication range while preventing excessive interference to other receive nodes in the network.
3Reliability
If channel assignment is made more restrictive to reduce interference, then quality of service is improved, but network capacity and spatial reuse decrease
Solution Approach 1:
Instead of using restrictive channel assignment, the patent changes the approach by dynamically adjusting transmit power parameters. This allows multiple nodes to share the same channel simultaneously with controlled interference levels, thereby improving network capacity and spatial reuse while maintaining acceptable quality of service through power management rather than channel separation.
Data Source
AI summary
A method allocates transmission channels to transmit nodes in a wireless network, the network comprising receive nodes and respective transmit nodes. Each receive node receives a data signal from its respective transmit node and is subject to interference from other transmission from other transmit nodes. The method includes: (i) determining the communication link gain of a data signal transmitted via each of communication paths; (ii) for each of the receive nodes, forming a set of the transmit nodes from which the receive node can tolerate interfering transmissions, (iii) collecting the formed set of transmit nodes from step (ii) for each receive node, and using the formed sets to generate a preferred set of transmit node and receive node pairs; and (iv) allocating a communication channel to the transmit nodes contained in the preferred set.