Abstract
Internet of Things (IoT) has widely been accepted as a promising paradigm for connecting a large number of resource-constrained miniature sensor nodes that have the ability to sense the deployed environment. They have found their applications in various aspect of our daily lives. However, these nodes are mostly restricted to sense only the scalar data. Nowadays, multimedia sensor nodes are gaining significant attention due to their ability to collect scalar as well as multi-dimensional data. These nodes are considered as the foundation of Internet of Multimedia Things (IoMT) and are shaping the perception of IoT. Multimedia data have stringent requirements in terms of reliability, latency, storage, bandwidth, and Quality of Service (QoS). To provide seamless and interoperable communication in IoMT, the underlying protocol stacks need to fulfill these stringent requirements. However, the heterogeneous nature of multimedia sensors makes interoperability a challenging task to fulfill. To understand the challenges faced by seamless and interoperable communication in IoMT, we provide a comprehensive review of the existing protocol stacks of IoMT and analyze their feasibility for multimedia streaming applications. Data storage of multimedia applications is another area that requires immediate attention of the research community. For this purpose, we study cloud as an entity to facilitate multimedia applications of IoMT. The instances of multimedia cloud are analyzed and a number of shortcomings are identified that pave the way for edge computing in IoMT. Finally, we present a case study that shows the significance of our work. The case study portrays an in-home patient monitoring system with an interoperable communication among the connected multimedia streaming devices at home, and healthcare practitioners at hospital. The case study also highlights the importance of uninterrupted data storage and retrieval at the network edge and multimedia sensor nodes.
Highlights
The Internet of Things (IoT) enables the integration of physical world with the virtual world via the sensor-embedded smart devices [1]
We examine their configuration for multimedia traffic of heterogeneous devices to provide seamless and interoperable communication in Internet of Multimedia Things (IoMT)
4) we provide a comprehensive list of research challenges and open research gaps present in the existing literature pertaining to communication protocols and the multimedia cloud of IoMT
Summary
The Internet of Things (IoT) enables the integration of physical world with the virtual world via the sensor-embedded smart devices [1]. The protocols in an IoT communication stack are designed for short-range transmission, low bandwidth consumption, and non-multimedia data only. Features like low-powered consumption, security, and support for large number of devices are quite attractive for IoMT This protocol does not guarantee for QoS provisioning, which is one of the top priority requirements in any real-time multimedia communication system. The working strategy of 6LoWPAN and IPv6 needs to be compatible with each other to fulfil real-time application requirements To face these challenges, IETF has introduced a group known as Routing Over Low power and Lossy Networks (ROLL) [53]. The loops are automatically eliminated during transmission because only destination can reply to RREQs. Due to low bandwidth and small-sized packets of IEEE 802.15.4 networks, LOADng makes use of fragmentation which cause delays during real-time multimedia communication. Other security requirements such as privacy, trust, anonymity and liability are required for wide-spread adoption of IoMT-enabled sensing devices
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