Abstract
Many applications are able to obtain enriched information by employing a wireless multimedia sensor network (WMSN) in industrial environments, which consists of nodes that are capable of processing multimedia data. However, as many aspects of WMSNs still need to be refined, this remains a potential research area. An efficient application needs the ability to capture and store the latest information about an object or event, which requires real-time multimedia data to be delivered to the sink timely. Motivated to achieve this goal, we developed a new adaptive QoS routing protocol based on the (m,k)-firm model. The proposed model processes captured information by employing a multimedia stream in the (m,k)-firm format. In addition, the model includes a new adaptive real-time protocol and traffic handling scheme to transmit event information by selecting the next hop according to the flow status as well as the requirement of the (m,k)-firm model. Different from the previous approach, two level adjustment in routing protocol and traffic management are able to increase the number of successful packets within the deadline as well as path setup schemes along the previous route is able to reduce the packet loss until a new path is established. Our simulation results demonstrate that the proposed schemes are able to improve the stream dynamic success ratio and network lifetime compared to previous work by meeting the requirement of the (m,k)-firm model regardless of the amount of traffic.
Highlights
Even though many typical Wireless Sensor Networks (WSNs) have been employed to detect the events and report interested values around itself, they are typically based on scalar values and have limited abilities to obtain various types of information
The (m,k)-firm model has not been studied with respect to finding specific applications in which this model could be utilized. They have the same problem as general quality of service (QoS) routing protocol. These issues motivated us to develop the adaptive real-time routing protocol we present in this paper
An adaptive approach to QoS routing is taken according to DBPi in Si as well as DBPObjID in TObjID to meet the requirements of the (m,k)-firm in terms of both TObjID and Si
Summary
Even though many typical Wireless Sensor Networks (WSNs) have been employed to detect the events and report interested values around itself, they are typically based on scalar values and have limited abilities to obtain various types of information. Unlike previous work, which focused on real-time delivery only, our previous approach is to introduce a multimedia application modeled by a (m,k)-firm stream. This new stream is maintained to ensure quality by using a new QoS routing protocol for the (m,k)-firm stream to reduce the overhead for path establishment and maintenance. To achieve this goal, based on the current status of application of the (m,k)-firm stream, a new QoS routing protocol was designed to select the path adaptively When this routing protocol is unable to meet the requirement, an adaptive traffic-handling algorithm is employed.
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