IoT Mobility Architecture Using Encrypted Context Reconstruction
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Solution Overview
Problem
Conventional wireless communication networks experience increased power consumption and latency due to tracking area updates and data transmission delays for IoT devices, which are not frequently active, leading to inefficient resource allocation and high power consumption.
Innovation Solution
A simplified mobility procedure is implemented using an IoT network architecture with dedicated network functions (IoTF-C and IoTF-U) that maintain minimal network state information, enabling opportunistic context reconstruction through encrypted client device contexts and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tracking area update procedure is performed when client device enters a new tracking area, then network location tracking is updated, but power consumption increases and time delay increases
Solution Approach 1:
The network performs preliminary actions by maintaining encrypted client device contexts in advance before the client device actually needs to transmit data. When the client device enters a new tracking area, the network already has the encrypted context ready, eliminating the need for immediate full context retrieval and reducing the need for tracking area updates.
Solution Approach 2:
The patent uses encrypted copies of client device contexts that can be efficiently transmitted and reconstructed. Instead of maintaining full network state information everywhere, the system creates encrypted copies that can be quickly decrypted and restored when needed, reducing the burden on the network while ensuring availability.
2Reliability
If tracking area update operation is completed before data packet transmission, then network awareness of client location is established, but time delay increases
Solution Approach 1:
The network performs preliminary actions by maintaining encrypted client device contexts in advance before the client device actually needs to transmit data. When the client device enters a new tracking area, the network already has the encrypted context ready, eliminating the need for immediate full context retrieval and reducing the need for tracking area updates.
Solution Approach 2:
The encrypted context allows the network to maintain continuous awareness of the client device's state without requiring discrete tracking area update procedures. The context can be efficiently transferred and reconstructed across different network nodes, ensuring continuous service without interruption.
3Reliability
If network maintains full client device context information, then service continuity is ensured, but network resource consumption increases
Solution Approach 1:
The patent uses encrypted copies of client device contexts that can be efficiently transmitted and reconstructed. Instead of maintaining full network state information everywhere, the system creates encrypted copies that can be quickly decrypted and restored when needed, reducing the burden on the network while ensuring availability.
Solution Approach 2:
The system changes the state of context information from unencrypted full data to encrypted compact representations. This parameter change allows the network to store and transmit much less data while maintaining the ability to reconstruct full service continuity when needed, significantly reducing network resource consumption.
Data Source
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AI summary
In an aspect, a network supporting a number of client devices includes a network access node. The network access node may receive a data packet from a client device and forward the data packet to a first network function implemented at a first network device, wherein the first network function is associated with the network access node and is configured to process at least one of user plane traffic or control plane traffic for the client device when the client device is in a reduced data transfer mode.