Quality of Service Issues in Wireless Mesh Networks

In this paper the Quality of Service Issues in Wireless Mesh Networks has been described. Several access points may be put into wireless Ad Hoc networks for people connecting to WWW or other Internet services. This kind of wireless network is called wireless mesh networks (WMNs).. Quality of service is largely lacking. For improving the performance of QoS in face of unreliable wireless medium, a new cross layer routing metric called expected transmission efficiency (ETE), which aims to find high throughput and low delay paths. Access points are placed in an wireless mesh network for maximizing cell coverage. However, larger coverage of an AP leads to lower throughput and longer delay in the access link as well as in the relay link. To find the optimal tradeoffs among delay, capacity, and coverage, Routing protocol design is critical to the performance and reliability of wireless mesh networks. Consequently, the overall performance of the network are poor even the total traffic load is far below the system capacity. Packet losses and delay due to interference in a multiple-hop mesh network with limited capacity .The wireless routers in the mesh network implemented. For improving performance of QoS. We can use traffic balancing.