A novel traffic splitting policy for performance improvement in wireless mesh networks

Author(s):  
Hongzhi Jiao ◽  
Frank Y. Li
2007 ◽  
Vol 08 (04) ◽  
pp. 407-426 ◽  
Author(s):  
LIANG MA ◽  
MIESO K. DENKO

Wireless mesh networks (WMNs) have been drawing significant attention in recent years due to their flexibility in providing extensive wireless backbone. WMNs typically consist of mesh routers and mesh clients with each node operating not only as a host but also as a router. Due to the traffic patterns in WMNs, load-balancing becomes an important issue and may degrade the performance of the entire network. This paper proposes a routing metric known as Weighted Cumulative Expected Transmission Time with Load-Balancing (WCETT-LB) for wireless mesh networks. WCETTT-LB enhances the basic Weighted Cumulative Expected Transmission Time (WCETT) by incorporating load-balancing into the routing metric. Unlike existing schemes, WCETT-LB implements load-balancing at mesh routers. WCETT-LB provides a congestion-aware routing and traffic splitting mechanism to achieve global load-balancing in the network. By conducting an extensive simulation experiments, the result shows that WCETT-LB outperforms the existing routing metrics in load-balancing in terms of achieving high packet delivery ratio, low average end-to-end delay and low average congestion level in wireless mesh networks. The qualitative and quantitative analysis also show the significance of the proposed scheme.


Since many years the area of wireless networks provided various solutions to promote a better quality of communication aspects in our day-to-day lives. Wireless mesh networks (WMNs) being a subset, emerging as a promising technology-oriented network as it comprises of a set of key features such as robustness, simplicity in operating conditions, fault-tolerant capability and faster process of deployment. The area has a wide range of commercially deployable applications where the communication gets carried out in multi-hop fashion between nodes. Here, nodes act as both the router and the host. Despite having potential characteristics features WMNs routing and Quality-of-Services (QoS), performance improvement is a key challenge derived in many studies. The formulated study thereby addresses this problem and come up with a novel routing solution to attain better QoS aspects such as throughput performance, delay performance in the context of WMN. The design of the formulated approach applies two prime functional schema i) approaches to handle the QoS problem, and along with this ii) the analytical design and modeling of the formulated routing approach aims to mitigate the hidden terminal problems with extensive quantitative analysis. The mathematical modeling approaches are further computationally executed, and assessment of aggregated throughput, energy, and QoS ratings are retained. Finally, the experimental outcome demonstrated that the presented approach attains better QoS and energy performance improvement (~60% and ~70% respectively) as compared to existing baseline models SOAR and ROMER.


Sign in / Sign up

Export Citation Format

Share Document