Abstract
In many Internet of Things (IoT) applications, large numbers of small sensor data are delivered in the network, which may cause heavy traffics. To reduce the number of messages delivered from the sensor devices to the IoT server, a promising approach is to aggregate several small IoT messages into a large packet before they are delivered through the network. When the packets arrive at the destination, they are disaggregated into the original IoT messages. In the existing solutions, packet aggregation/disaggregation is performed by software at the server, which results in long delays and low throughputs. To resolve the above issue, this paper utilizes the programmable Software Defined Networking (SDN) switch to program quick packet aggregation and disaggregation. Specifically, we consider the Programming Protocol-Independent Packet Processor (P4) technology. We design and develop novel P4 programs for aggregation and disaggregation in commercial P4 switches. Our study indicates that packet aggregation can be achieved in a P4 switch with its line rate (without extra packet processing cost). On the other hand, to disaggregate a packet that combines N IoT messages, the processing time is about the same as processing N individual IoT messages. Our implementation conducts IoT message aggregation at the highest bit rate (100 Gbps) that has not been found in the literature. We further propose to provide a small buffer in the P4 switch to significantly reduce the processing power for disaggregating a packet.
Highlights
Many Internet of Things (IoT) technologies have been used in applications for people flow, traffic flow, logistics flow, money flow, smart home, interactive art design, and so on
Our implementation conducts IoT message aggregation at the highest bit rate (100 Gbps) that has not been found in the literature
This paper proposed to utilize the P4 switch for quick packet aggregation and disaggregation
Summary
Many Internet of Things (IoT) technologies have been used in applications for people flow, traffic flow, logistics flow, money flow, smart home, interactive art design, and so on. In this client-server architecture, the IoT devices (the clients) are connected to the IoTtalk engine (the server; Figure 1(1)). When an IoT device is connected to the IoTtalk server, the server automatically creates the network application (Figure 1(2)) for the device to interact with other devices. The device is installed as a device application (DA; Figure 1(4)) that collects the sensor data generated by the sensor/controller of the device. DA of the output device receives data device of the output device receives device (Figure 1(5)) if it is a group of actuators (e.g., robot arm).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
