Abstract
With the growth of Internet of Things (IoT) services and applications, the efficient transmission of IoT data has been crucially required. The IETF has recently developed the QUIC protocol for UDP-based multiplexed and secure transport. The Multipath QUIC (MP-QUIC) is also being discussed as an extension of QUIC in the multipath network environment. In this paper, we propose a proxy-based adaptive MP-QUIC transmission for throughput enhancement in the IoT environment. In the proposed scheme, a proxy device is employed between IoT clients and IoT server to aggregate the traffics of many clients in the access network. The proxy will transport a large among of traffics to the server, adaptively to the network conditions, by using multiple paths in the backbone network. For this purpose, the proxy device employs a path manager to monitor the current network conditions and a connection manager to manage the MP-QUIC connections with the IoT server over the backbone network with multiple paths. For effective MP-QUIC transmission, the proxy will transmit the prioritized packets to the server using the best path with the lowest round-trip time (RTT), whereas the non-prioritized packets are delivered over the other paths for traffic load balancing in the network. From the testbed experimentations with the MP-QUIC implementation and ns-3 simulation modules, we see that the proposed scheme can outperform the normal QUIC (using a single path) and the existing MP-QUIC scheme (using the round-robin policy) in terms of response delay and total transmission delay. Such performance gaps tend to increase as the link delays and packet loss rates get larger in the network.
Highlights
A proxy device is employed between Internet of Things (IoT) clients and IoT servers in the network so as to aggregate the data traffics of clients in the access network
The proposed proxy-based adaptive Multipath QUIC (MP-QUIC) transmission scheme can be integrated into the Multiple IoTs (MIoT) framework, in which an Social IoT (SIoT) consists of a set of IoT objects with the common interests, and these IoT objects are connected to the MP-QUIC proxy
We described a proxy-based adaptive MP-QUIC transmission for throughput enhancement in the IoT environment
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. For effective data transmissions over the network, many multipath transport protocols can be used, which include Multi-Path TCP (MP-TCP) [1] and Stream Control. SCTP is another transport layer protocol to support the multi-homing features for real-time and high-quality services, such as Internet telephony. With this SCTP multi-homing feature, a more enhanced scheme has been developed, called Concurrent Multipath Transfer for SCTP (CMT-SCTP) [3]. By using MP-QUIC, each data stream of QUIC can be delivered to different paths concurrently in the network This feature will be helpful to enhance the transmission throughput for mission-critical application services.
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