Gathering Gateway Authentication Bypass for LPWAN Handover Latency
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Solution Overview
Problem
In LPWAN communication networks, handover roaming scenarios often result in significant latency issues due to the need for multiple server relayings, which can lead to difficulties for end devices in joining the network within the allotted time, especially for Class A devices with limited downlink communication opportunities.
Innovation Solution
A method that short-circuits the first, second, and third servers by allowing gathering gateways to directly communicate with the fifth server for authentication, reducing latency and enabling end devices to join the network more efficiently by managing addresses and security keys directly, while maintaining coherent addressing and encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple server relayings are used for handover roaming authentication, then network security and protocol compliance are improved, but processing latency increases significantly
Solution Approach 1:
The patent extracts the authentication function from the multi-server relay chain and implements it directly at the gathering gateway. The gateway autonomously performs authentication with the fifth server, removing the intermediate relay steps through the first, second, and third servers. This extraction maintains security requirements while eliminating unnecessary latency-inducing relay operations.
Solution Approach 2:
The patent segments the handover roaming process into two distinct paths: a fast authentication path that goes directly from gathering gateway to fifth server, and a data forwarding path that uses the existing server chain. This segmentation allows critical authentication operations to bypass the latency-prone relay chain while maintaining protocol compliance through separate data routing.
2Reliability
If multiple server relayings are used for handover roaming, then protocol compliance is improved, but network joining speed deteriorates
Solution Approach 1:
The patent introduces a direct communication channel between the gathering gateway and the fifth server as an intermediary path for authentication. This mediator bypasses the traditional multi-server relay while maintaining protocol compliance through direct authentication messaging. The gateway acts as an intelligent intermediary that can directly interface with the authentication server without requiring intermediate relay nodes.
3Use of energy by moving object
If Class A reception window mechanism is used, then battery life is improved, but downlink communication reliability deteriorates
Solution Approach 1:
The patent implements preliminary authentication action during the uplink transmission phase. The gathering gateway authenticates the end device before the device enters standby mode, ensuring authentication status is established in advance. This preliminary action allows the device to remain in low-power Class A mode while still receiving reliable authentication and data forwarding services, as the gateway maintains the authentication state during standby periods.
Data Source
AI summary
In the context of management of handover roaming, a communication system comprises a first LPWAN network of a first operator and a second LPWAN network of a second operator. The first network comprises gathering gateways, a first server managing the gathering gateways, and a second server controlling the MAC layer. The second network comprises a third server interfacing fourth and fifth servers with the second server. Uplink frames of application data are transported from an end device of the second operator to the fourth server by successive relayings of the first, second and third servers. However, when the end device of the second operator requests joining the communication system in order to benefit from the services of the fourth server, the gathering gateways communicate with the fifth server, short-circuiting the first, second and third servers.