CoAP-Based Mobility Management for the Internet of Things

Area of Science:

• Computer Science
• Networking
• Internet of Things (IoT)

Background:

• Existing mobility management protocols like Mobile IP are unsuitable for IoT due to sensor node constraints (limited power, sleep/wakeup modes).
• Mobile sensor nodes acting as servers (e.g., using CoAP) complicate data retrieval for web clients.
• Constrained wireless networks in IoT environments pose challenges for traditional mobility management.

Purpose of the Study:

• To propose a novel mobility management protocol, CoMP, for efficient data retrieval from moving sensor nodes in IoT environments.
• To leverage the Constrained Application Protocol (CoAP) for mobility management, reducing signaling overhead and packet loss.
• To enhance reliability and data integrity for web-based applications interacting with mobile IoT devices.

Main Methods:

• Developed CoMP, a mobility management protocol utilizing the IETF CoAP protocol.
• Implemented a separate location management server to track mobile sensor nodes.
• Introduced a 'holding mode' to prevent data loss during node movement.
• Extended CoAP signaling procedures for discovery, registration, binding, and holding.

Main Results:

• CoMP effectively retrieves sensing data from moving sensor nodes.
• The protocol eliminates the additional signaling overhead associated with Mobile IP.
• CoMP demonstrates reliable mobility management and prevents packet loss.
• Performance evaluation shows CoMP has superior handover latency and packet loss compared to Mobile IPv4/v6 and Hierarchical Mobile IPv4/v6.

Conclusions:

• CoMP offers a robust and efficient solution for mobility management in IoT environments.
• The protocol's reliance on CoAP makes it well-suited for constrained IoT devices.
• CoMP significantly improves data retrieval reliability and reduces latency for web-based IoT applications.