Wireless Link Negotiation via Relay Nodes
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Solution Overview
Problem
In radio communication networks without central nodes or base stations, direct communication between nodes may be hindered by obstructions, necessitating an efficient method for establishing relay connections to facilitate communication.
Innovation Solution
A method and apparatus for link negotiation in wireless networks that involves determining unreachable nodes, broadcasting a relay connection request, receiving responses from potential relay nodes, selecting a suitable relay node, and transmitting data through that node to ensure successful communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct point-to-point transmission is used between nodes, then communication simplicity is maintained, but communication reliability deteriorates when nodes are located far away or obstructions exist
Solution Approach 1:
The patent introduces relay nodes as intermediaries to facilitate communication between source and target nodes when direct transmission is not feasible. The relay node receives data from the source node and forwards it to the target node, enabling communication in scenarios where nodes are far apart or obstructions exist, thus improving communication reliability without requiring complex centralized infrastructure
2Adaptability or versatility
If relay nodes are introduced to enable communication between unreachable nodes, then communication coverage is improved, but network complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where nodes autonomously determine their own reachability status and independently initiate relay connection requests when direct communication fails. Each node performs its own link negotiation and relay selection without requiring centralized coordination, which improves communication coverage while minimizing the increase in network complexity through distributed autonomous operation
3Adaptability or versatility
If broadcast transmission is used to request relay connections, then the ability to find relay nodes is improved, but communication time increases due to waiting for responses
Solution Approach 1:
The patent applies preliminary action by having the source node broadcast a relay connection request containing pre-configured information about acceptable relay nodes and communication parameters before actual data transmission begins. This allows potential relay nodes to prepare in advance and respond more quickly, reducing the overall link negotiation time while maintaining the ability to discover suitable relay nodes through the broadcast mechanism
Data Source
AI summary
This document discloses a solution for a link negotiation procedure in a wireless network. According to an aspect, the solution comprises in a first node (100) of a wireless network: determining (300) that a target node of the wireless network is not reachable with a point-to-point transmission; transmitting (302) broadcast transmission requesting a relay connection to the target node; receiving (304) on a given frequency a response from a second node of the wireless network, the response indicating capability to relay transmissions to the target node; transmitting (306) data to the second node, the being data intended to the target node and receiving (308) an acknowledgement from the second node that the data has been successfully transmitted to the target node.