Wireless Network Address Space Segmentation for Scalable Subscription
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Solution Overview
Problem
Existing wireless network subscription methods, such as ZigBee and 6LoWPAN, face challenges in scalability and address allocation efficiency, leading to increased overhead and power consumption as the network size grows, with potential address depletion and increased network depth.
Innovation Solution
A distributed network subscription method that classifies address spaces for child routers and end devices into general and special spaces, allowing devices to subscribe using general addresses first and switching to special addresses only when necessary, and converting end devices to routers based on signal strength to optimize network extension and address utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices request subscription as routers until denied by all parent candidates, then network depth increases, but network scalability deteriorates
Solution Approach 1:
The patent segments the address space into two distinct parts: a first address space for router subscriptions and a second address space for end device subscriptions. This segmentation allows devices to first attempt router subscription using the first address space, and only if denied, fall back to end device subscription using the second address space, thereby controlling network depth while maintaining subscription success rate.
Solution Approach 2:
The patent implements a dynamic subscription process where devices adapt their subscription type based on real-time network conditions. Devices dynamically switch from attempting router subscription to end device subscription depending on whether parent candidates have available addresses, optimizing network depth management while ensuring subscription success.
2Loss of energy
If distributed address allocation is used, then message overhead is reduced, but address depletion occurs
Solution Approach 1:
The patent divides the address space into a first address space for routers and a second address space for end devices. This segmentation prevents address depletion by ensuring that router subscriptions consume addresses from the first space while end device subscriptions consume addresses from the second space, maintaining address availability throughout the network.
Solution Approach 2:
The patent establishes predetermined address spaces for different device types before the network operates. By pre-allocating address spaces for routers and end devices separately, the system prevents address depletion without requiring complex address management protocols, maintaining low message overhead while ensuring sustained address availability.
3Quantity of substance
If stochastic address allocation is used, then address space utilization is improved, but message overhead increases
Solution Approach 1:
The patent segments the address space into dedicated first and second address spaces for router and end device subscriptions respectively. This segmentation enables efficient address space utilization without requiring stochastic allocation, as devices simply select from their respective predetermined address spaces, thereby reducing message overhead while maintaining good address utilization.
4Reliability
If centralized address allocation is used, then address validity is detected, but network scalability is reduced
Solution Approach 1:
The patent segments the address space into distributed first and second address spaces that are managed locally by routers. This segmentation enables address validity detection without requiring centralized coordination, as each router manages its own address space independently, thereby maintaining network scalability while ensuring address validity.
Data Source
AI summary
Provided is a method of subscribing, by a terminal, to a network as a router or an end device in a wireless network (WN) having a tree structure including routers and end devices. Each router receives, from a parent router thereof, addresses which are usable independently for child routers and child end devices thereof, and classifies the addresses into a general address and a special address. A terminal wishing to subscribe to a network may subscribe to the network by using a special address of an end device, only when the terminal is unable to subscribe to the network by using a general address of the end device, thereby reducing depletion of addresses to be used for terminal subscription and facilitating network subscription of the end device.