Packet Positioning in Channel Slots for Collision Avoidance
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Solution Overview
Problem
Packet transmission in channel-hopping networks is affected by various factors, including timing drift, packet size, and network load, leading to potential collisions and resource wastage due to retries, especially in resource-constrained networks like IPv6 over Low-Power Wireless Personal Area Networks and Wireless Smart Utility Networks.
Innovation Solution
A method and apparatus that determine a preferred statistical zone within a channel slot for packet transmission based on statistical profiles of message flow components, such as sender device capabilities, network load, and receiver device characteristics, to avoid collisions and optimize channel usage by distributing packets within the slot according to these profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If packets are transmitted at the beginning of a channel slot or immediately after channel switch, then transmission latency is reduced, but packet collisions occur due to timing drift and synchronization issues
Solution Approach 1:
The system performs preliminary positioning of packet transmission within the channel slot based on statistical profiles before actual transmission occurs. The sender device determines a preferred transmission position in advance, considering factors like timing drift and network load, thereby avoiding collisions while maintaining efficient latency.
2Productivity
If multiple packets are concentrated in a single channel slot, then channel utilization is improved, but resource wastage increases due to retries from collisions
Solution Approach 1:
The system applies local quality by distributing packets to different preferred positions within channel slots based on their individual characteristics and current network conditions. Each packet is positioned optimally within its slot rather than using a uniform approach, reducing collisions and retry-related energy waste while maintaining high channel utilization.
3Stability of the object's composition
If channel hopping follows a predetermined pattern with fixed slot allocations, then network synchronization is maintained, but adaptability to varying network conditions deteriorates
Solution Approach 1:
The system introduces dynamics by adjusting packet transmission positioning within channel slots based on real-time statistical profiles of network conditions, while maintaining the overall predetermined channel hopping pattern. This allows the system to adapt to varying loads and timing drift without breaking synchronization, as the adjustment occurs within the established framework rather than changing the framework itself.
Data Source
AI summary
Provided is a machine-implemented method to send data from an electronic device, comprising positioning transmission of a packet in a channel slot preferred zone of a channel slot instance according to a statistical profile of at least one component of message flow in a network over which the packet is to be transmitted. The method may determine a statistical profile of components of the message flow and select at least one statistical profile as a basis for composing the channel slot preferred zone. The components of the message flow may comprise a sender electronic device, a network, a packet for transmission, a recurring channel slot and a receiver electronic device.