Directional Statistical Priority Multiple Access System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio frequency communication techniques, such as Random Aloha and Time Division Multiple Access, face limitations in throughput as the number of nodes increases, leading to reduced bandwidth and potential system failure due to increased interference.
Innovation Solution
A system utilizing an omnidirectional antenna for transmission and a directional antenna for reception, controlled by a controller that determines the origin of signals and adjusts the field of view to focus on desired nodes, enabling efficient data transfer via statistical priority multiple access protocols, thereby increasing network throughput independent of the number of nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If omnidirectional transmitters and omnidirectional receivers are used to maintain communication between nodes, then communication coverage is improved, but throughput is limited by the number of nodes and interference increases
Solution Approach 1:
The patent segments the communication function into two distinct antenna types: omnidirectional antennas for transmission and directional antennas for reception. This segmentation allows each antenna to be optimized for its specific function, enabling the system to achieve both wide coverage and high throughput by preventing the interference problems that arise when omnidirectional reception is used
Solution Approach 2:
The patent applies local quality by making the receive antenna directional rather than omnidirectional. This creates a localized reception pattern that focuses on specific transmit nodes, allowing the receiver to selectively accept signals from desired nodes while rejecting signals from other nodes, thereby maintaining high throughput even as the number of nodes increases
2Quantity of substance
If the number of nodes in the network increases, then network capacity is improved, but per-node throughput decreases proportional to 1/N
Solution Approach 1:
The patent extracts the directional reception capability from the traditional omnidirectional receiver, creating a specialized receive function that selectively processes only desired signals. This extraction allows the system to maintain high per-node throughput regardless of the total number of nodes, as each node can independently select and receive from its desired transmit node without being affected by other nodes in the network
3Object-affected harmful factors
If traditional directional transmit and receive systems are used, then interference is reduced, but the system requires two frequencies and antennas per link increasing complexity
Solution Approach 1:
The patent applies universality by making each node equipped with both omnidirectional and directional antennas that can serve multiple functions. The omnidirectional antenna handles all transmissions, while the directional antenna selectively receives from any node in the neighborhood. This multi-functional approach eliminates the need for separate dedicated transmit and receive antenna pairs for each link, reducing overall system complexity while maintaining low interference
Data Source
AI summary
The present invention is directed to a system and related method for providing high bandwidth communication between nodes in an RF neighborhood. Each node may transmit via an omnidirectional antenna element while time differentially receiving via a directional antenna element. As each node receives signals from neighborhood nodes, it determines a neighborhood contingent as well as a desirability of the received signals and the direction from which the desirable signals originate. Based on this direction, each node focuses a directional antenna element on the node from which a signal is desired while eliminating interference from transmissions from undesired nodes. Based on the neighborhood contingent, the system adjusts the node's omnidirectional transmit rates to communicate via statistical priority multiple access protocols with the desirable neighborhood nodes. The system adjusts the node's statistical priority multiple access channel access to account for the eliminated interference.