C-IoT - Session 1
02:00 pm: 6LoWDIS: A Lightweight Service Discovery Protocol for 6LoWPAN
Khaled Qorany AbdelFadeel (Cairo University, Egypt); Khaled Elsayed Elkhamy (Cairo University, Egypt)
Abstract: Billions of devices are projected for deployment in the Internet of Things (IoT). Deploying these devices and their associated services is impossible manually, thus a seamless and scalable service discovery mechanism is mandatory for realizing the IoT vision. In this paper, we propose a lightweight application-layer service discovery protocol for IPv6 Low-power Personal Area Networks (6LoWPAN) called 6LoWDIS. 6LoWDIS has two different modes of operation: poll and push both of which require the support of multicast routing in the network layer. 6LoWDIS is built on CoAP/HTTP, thus 6LoWDIS exploits the capabilities of RESTful architectures. We also examine the impact of multicast forwarding techniques on the performance of 6LoWDIS. Simulation shows the delay and the capacity of 6LoWDIS with different multicast forwarding techniques. The results indicate that the mean time-to-enter of poll mode is higher than in push mode and mean time-to-leave of poll is smaller than in case of push mode. Also, the underlying multicast protocol has a significant effect on the performance of the schemes.
02:20 pm: Authorization Mechanism for MQTT-based Internet of Things
Aimaschana Niruntasukrat (National Electronics and Computer Technology Center (NECTEC) & National Science and Technology Development Agency (NSTDA), Thailand); Chavee Issariyapat (NECTEC, Thailand); Panita Pongpaibool (National Electronics and Computer Technology Center, Thailand); Koonlachat Meesublak (NECTEC, Thailand); Pramrudee Aiumsupucgul (NECTEC, Thailand); Anun Panya (National Electronics and Computer Technology Center (NECTEC), Thailand)
Abstract: This paper presents the design and implementation of an authorization mechanism for MQTT-based Internet of Things (IoT). The design is based on OAuth 1.0a, which is an open authorization standard for web applications. Some redesign and modification have been made to the based framework to fit it within the MQTT environment. Several considerations are taken into account, including limited node resources, lack of node's user interface, and key/secret distribution and management. The design is implemented on a real MQTT-based IoT service platform and demonstrated that it works as intended. Authorization delay and message overhead are minimal. Security issues are analyzed along with discussion for future work.
02:40 pm: A Radio Resource Sharing Scheme for IoT/M2M Communication in LTE-A Downlink
Yasir Mehmood (ComNets, University of Bremen, Germany); Carmelita GÃ¶rg (University of Bremen, Germany); Andreas Timm-Giel (Hamburg University of Technology, Germany)
Abstract: Machine-to-Machine (M2M) communication is an emerging technology which offers various ubiquitous services and is one of the main enablers of the Internet-of-Things (IoT) paradigm. Nevertheless, the notion of cellular-M2M communication is emerging due to the wide range, high reliability, increased capacity and decreased costs of future mobile networks. Consequently, M2M traffic is anticipated to pose severe challenges to mobile networks due to a myriad of devices sending and receiving small sized data. Moreover, mobile M2M traffic is expected to degrade the performance of traditional mobile traffic due to inefficient utilization of the scarce radio spectrum. This paper proposes a packet aggregation scheme to efficiently utilize radio spectrum for downlink M2M/IoT traffic. Therefore, the small sized data packets are aggregated at the Donor eNBs (DeNB) by considering the latest Third Generation Partnership Project (3GPP) standardized Long-Term-Evolution-Advanced (LTE-A) networks. Additionally, 3GPP standardized layer 3 inband Relay Nodes (RNs) are used for de-multiplexing of aggregated packets in downlink. The proposed scheme is validated through extensive system level simulations in an LTE-A based implementation for the RIVERBED modeler simulator. Our simulation results show that the number of M2M/IoT devices served per PRB (Physical Resource Block) is approximately doubled with the proposed packet aggregation scheme as compared to conventional relaying.
03:00 pm: Performance and Security Evaluation of Intra-Vehicular Communication Architecture
Madhusanka Liyanage (University of Oulu, Finland); Pradeep Kumar (The Arctic University of Norway, Finland); Simone Soderi (University of Oulu & Alstom Signalling Solutions SpA, Italy); Mika Ylianttila (University of Oulu, Finland); Andrei Gurtov (Aalto University, Finland)
Abstract: In this paper, we propose a secure intra-vehicular wireless communication architecture based on Host Identity Protocol (HIP). It ultimately improves the security of wireless intra-vehicular communication systems. The performance evaluation of the proposed architecture is performed in a ski tunnel which emulates the real underground transportation environment. Our results verify the feasibility of proposed architecture by providing required level of service quality. Also, it outperforms the existing secure architectures. More importantly, the proposed architecture protect the wireless intra-vehicular communication system from IP based attacks.
Networking Break - Monday, 03:30 pm until 04:00 pm
C-IoT - Session 2
04:00 pm: Interoperability in heterogeneous low-power wireless networks for health monitoring systems
Hossein Fotouhi (Mälardalen University, Sweden); Aida Causevic (Mälardalen University, Sweden); Maryam Vahabi (Mälardalen University, Sweden); Mats Björkman (Malardalen University, Sweden)
Abstract: In the future Internet of Things, ensuring interoperability can be a challenging task, especially in mission-critical applications such as in Health Monitoring Systems. Existing low-power wireless network architectures are designed in isolated networks, and ensure a satisfying level of performance in homogeneous networks. However, with co- existence of different low-power networks, the interoperability related problems arise. To bridge this gap in this paper, we study various protocol stacks (i.e., Bluetooth, Bluetooth Low Energy, IEEE 802.15.4, ZigBee, 6LoWPAN and IEEE 802.15.6), explaining their specific features. Furthermore, we provide a generic protocol stack design that facilitates multiple radios with different protocol stacks, regardless of being IP- based or non-IP-based networks. We see this approach as a possibility to enhance network performance in terms of reliability, timeliness, and security, while providing higher levels of scalability and connectivity.
C-IoT Panel - The Road to Synergistic Proliferation in the IoT