Wireless Network Route Initialization via Association Grants
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Solution Overview
Problem
Existing wireless communication networks face inefficiencies due to the need for information transmission before routing topology is defined, leading to complex and resource-intensive operations, especially in low-power modes and environments with barriers affecting wireless links.
Innovation Solution
A method where routes between stations and an association unit are established using pre-defined routes based on association requests and grants, allowing only established routes to be used for communication, thereby avoiding inconsistent routing and reducing power consumption and bandwidth waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If information is transmitted via sensor stations before routing topology is defined, then communication can be established, but device complexity increases and power consumption rises
Solution Approach 1:
The patent applies preliminary action by establishing routing topology definitions before information transmission begins. The association unit pre-defines routes using route definition messages, so that when data needs to be transmitted, the path is already determined. This eliminates the need for sensor stations to dynamically determine routes during operation, reducing their complexity while maintaining communication capability.
2Adaptability or versatility
If a decentralized routing approach is used, then communication flexibility is improved, but routing efficiency deteriorates due to unnecessary branches
Solution Approach 1:
The patent implements feedback mechanisms where sensor stations send route registration packets to the association unit, reporting the routes they have selected. The association unit receives this feedback and can optimize the routing topology by selecting the best routes based on the registered information. This feedback loop enables the system to maintain flexibility while improving routing efficiency by eliminating unnecessary branches.
3Quantity of substance
If the same frequency is used for upward and downward links, then bandwidth is optimized, but synchronization complexity increases
Solution Approach 1:
The patent applies segmentation by separating upward and downward communication links into different frequency channels. Instead of using the same frequency for both directions, the system divides the spectrum into distinct channels for uplink and downlink communications. This eliminates the need for complex synchronization between opposing signals while maintaining efficient bandwidth utilization through dedicated frequency allocation.
4Adaptability or versatility
If sensor stations support multiple communication modes, then adaptability is improved, but energy consumption increases
Solution Approach 1:
The patent reduces energy consumption by performing route definition in advance through preliminary action. The association unit establishes complete routing topologies before data transmission begins, allowing sensor stations to operate in a simplified, predetermined mode rather than dynamically switching between multiple communication modes. This preliminary setup enables stations to consume less energy while maintaining the necessary communication flexibility.
Data Source
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AI summary
A wireless communication network comprises an association unit and a plurality of stations. At least part of the stations store association information indicative of an associated route for transmission of messages from the station to the association unit. The association information is generated by installing the stations in a not-associated state; transmitting association request messages from stations in the not-associated state; and transmitting association grant messages in response to the association request messages. Each association grant message is transmitted only from the association unit or, at least when the station that has transmitted association request message is outside a reception range of the association unit, from one of the stations that is in an associated state. Each station that has received the association grant message in response to its association request message is switched to the associated state. Association information is stored that indicates the station that has sent the association grant message as part of the associated route to the association unit.