Kim Beom-Su, Kim Sangdae, Kim Kyong Hoon, Sung Tae-Eung, Shah Babar, Kim Ki-Il
Department of Computer Science and Engineering, Chungnam National University, Daejeon 34134, Korea.
School of Computer Science and Engineering, Kyungpook National University, Daegu 41566, Korea.
Sensors (Basel). 2020 Mar 14;20(6):1633. doi: 10.3390/s20061633.
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 (,)-firm model. The proposed model processes captured information by employing a multimedia stream in the (,)-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 (,)-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 (,)-firm model regardless of the amount of traffic.
许多应用程序能够通过在工业环境中采用无线多媒体传感器网络（WMSN）来获取丰富的信息，该网络由能够处理多媒体数据的节点组成。然而，由于WMSN的许多方面仍需完善，这仍是一个潜在的研究领域。一个高效的应用程序需要具备捕获和存储有关对象或事件的最新信息的能力，这就要求实时多媒体数据能够及时传送到汇聚节点。为了实现这一目标，我们基于（，）-firm模型开发了一种新的自适应QoS路由协议。所提出的模型通过采用（，）-firm格式的多媒体流来处理捕获的信息。此外，该模型包括一种新的自适应实时协议和流量处理方案，以根据流状态以及（，）-firm模型的要求选择下一跳来传输事件信息。与先前的方法不同，路由协议和流量管理中的两级调整能够增加在截止时间内成功数据包的数量，并且沿先前路由的路径建立方案能够减少数据包丢失，直到建立新路径。我们的仿真结果表明，与先前的工作相比，所提出的方案能够通过满足（，）-firm模型的要求来提高流动态成功率和网络寿命，而不管流量大小如何。
