Soft Real-Time Traffic Communication in Loaded Wireless Mesh Networks

• Type: Article in International Conference Proceedings Book
• Date: 2016

Authors

Aisa, J (Author) Other; Fotouhi, H (Author) Other; Villarroel, JL (Author) Other; Luis Almeida (Author) FEUP

Conference proceedings International

Title: IEEE World Conference on Factory Communication Systems, WFCS 2016, Aveiro, Portugal, May 3-6, 2016

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 0 Citations

Other information

Authenticus ID: P-00K-QNS

DOI: 10.1109/wfcs.2016.7496503

Abstract (EN): Industrial applications have been shifting towards wireless multi-hop networks in recent years due to their lower cost of deployment and reconfiguration compared with their wired counterparts. These wireless networks usually must support real-time communication to meet the application requirements. For this reason, Wireless Mesh Networks (WMNs) are potential candidates for industrial applications as they support a fixed infrastructure of static nodes for relaying packets. To meet the application demands, we modify the wireless chain network protocol (WICKPro) to support soft real-time traffic in WMNs with chain topologies over IEEE 802.11. We employ tele-operation of mobile robots as our case study, and perform extensive simulation and laboratory experiments. We show that the data delivery ratio is increased up to 42% in a scenario with 7 nodes, when the maximum end-to-end delay tolerated by the application is doubled. This is particularly suited to soft real-time applications that can trade longer delays by higher reliability. Moreover, when compared with a distributed priority-based token-passing protocol (RT-WMP), the lower overhead of WICKPro allows, in an error-free scenario, obtaining a throughput improvement of 33.42% on average.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8