IoT Delay-Tolerant Wireless Network Service Signaling Priority
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Solution Overview
Problem
The proliferation of IoT devices is overwhelming wireless networks with excessive signaling, necessitating a method to prioritize and manage NAS signaling messages to prevent network congestion.
Innovation Solution
Implementing a delay-tolerant network service that allows IoT devices to be configured with a low priority access indicator, enabling the wireless network to prioritize processing of NAS signaling messages based on a subscriber's service profile, allowing lower priority messages to be delayed or rejected in favor of higher priority messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all IoT devices are allowed to access the wireless network simultaneously, then network coverage and device connectivity are improved, but network congestion and signaling overload occur
Solution Approach 1:
The patent segments NAS signaling messages into different priority levels (high priority and low priority). Low priority messages are identified by a specific indicator in the message and are processed separately from high priority messages, allowing the network to handle critical signaling first while managing less urgent traffic without causing congestion.
Solution Approach 2:
The patent applies different quality of service treatments to different portions of network traffic based on their priority classification. High priority NAS signaling receives immediate processing and resource allocation, while low priority signaling is subjected to rate limiting and delayed processing, optimizing overall network performance for critical operations.
2Ease of operation
If NAS signaling from all devices is processed equally, then fairness among devices is maintained, but critical signaling experiences delays due to non-critical traffic
Solution Approach 1:
The patent segments the NAS signaling processing queue into high priority and low priority portions. High priority signaling messages are processed immediately without waiting for low priority messages, ensuring critical network operations are not delayed by non-urgent traffic from IoT devices.
3Productivity
If the network processes all incoming NAS signaling messages, then complete service coverage is provided, but network resources are overwhelmed
Solution Approach 1:
The patent extracts and identifies low priority NAS signaling messages using a specific indicator field in the messages. These identified low priority messages are then separated from the main processing flow and subjected to rate limiting, removing the burden of non-critical traffic from the network's immediate processing requirements.
Solution Approach 2:
The patent implements a rate limiting mechanism that discards excess low priority NAS signaling messages when the network is under heavy load. The network recovers by processing these discarded messages when network conditions improve and capacity becomes available, maintaining eventual delivery while preventing overwhelming the system during peak demand.
Data Source
AI summary
A network device receives signaling associated with a wireless device of a subscriber to a delay-tolerant wireless network service, and downloads a service profile of the subscriber from a Home Subscriber Server (HSS) associated with a wireless network. The network device retrieves, from the downloaded service profile, a signaling priority value associated with the subscriber or with the wireless device, and identifies whether the signaling priority value indicates a low priority value. The network device prioritizes the processing of signaling associated with a plurality of wireless devices based on whether the signaling priority value indicates the low priority value, wherein the plurality of wireless devices includes the wireless device.