Abstract
IoT resource registration and lookup interfaces have been specified for Resource Directory (RD) with defined resource link format in IETF standard. However, it has many drawbacks due to the nature of the centralized architecture. This paper proposes an ICN-based distributed RD architecture. The proposed distributed IoT resource discovery and routing mechanisms allow and reuse the existing RD resource registration and lookup interfaces, which aligns with the IETF standard. Routers do not maintain routing table for every IoT resource, but keep routing tables on the aggregated resource attributes. A client does not need to know the resource names in advance for the routing. Resource advertisement and routing table advertisement are triggered by the updates, which prevents the network congestion due to the control messages. It also allows the client to specify how many resources would be returned. Our simulation results indicate substantial performance improvement of the proposed ICN-based distributed RD architecture in terms of network overhead and routing table size compared to the existing distributed RD deployments.
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