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In this paper, we present preliminary results from a performance comparison between the two multicast routing protocols ODMRP and SMF. While SMF uses a proactive selection of forwarding nodes, ODMRP is a reactive approach to multicast routing. For the evaluation, we use an two-step approach. First, we perform emulation-based measurements in a virtualized test bed utilizing the ns-3 IEEE 802.11 model...
The mobility is an important research topic in wireless sensor network. This paper presents an improved strategy of SPEED protocol for the requirement of node mobility in Wireless Mesh Sensor Network.
The wireless mesh network is a novel wireless network architecture that supports clients to communicate with different types of networks, Internet etc. It consists of mesh routers and mesh clients. These mesh routers are minimal mobile and mesh clients are totally mobile which operate on batteries. Hence, power consumption becomes an important issue in mesh clients. The protocols of Ad hoc networks...
Wireless and mobile networks represent an active research and new technology development area. In this paper we analyze wireless network and discuss the applications of wireless technology. To fully support mobility, a next generation Internet must provide ways to name and route to a much richer set of network elements than just attachment points. It should support routing in terms of names, which...
Wireless mesh networks (WMNs) enlarge the wireless coverage area by interconnecting relatively stationary wireless mesh routers (MRs). Under the coverage, mobile nodes (MNs) can move around and connect to nearby MRs. Mobility management is one of the most significant management services for WMNs. In this paper, a hand-off management structure based on OLSR protocol is presented. In this structure,...
Due to architectural similarities, routing protocols designed for ad hoc networks have been applied to wireless mesh networks (WMNs). However, such routing protocols do not scale well in WMNs, requiring considerable research efforts for enhancing them. In order to scale up WMNs, this paper introduces a three-layered routing architecture designed for infrastructure WMNs, which explores a hybrid routing...
After the great deployment and success of the Wireless Local Area Networks based on access points, which communicate by using wired links, the wireless world saw the birth of new technologies like Ad Hoc networks and Wireless Mesh Networks (WMN), which permit the flexibility, easy deployment and low cost. The first objective of these networks is to offer a seamless connectivity to mobile users. Nevertheless,...
Wireless mesh networks (WMNs) are a type of radio-based network systems which require minimal configuration and infrastructure. One of the factors that influence the performance of WMNs is the underlying routing protocol used. Here, we propose one such routing protocol, called M-OLSR, which is a variant of OLSR, a traditional link-state protocol developed to meet the requirements of mobile adhoc networks...
The hybrid wireless mesh protocol is a mesh routing protocol that combines the flexibility of on-demand routing with proactive topology tree extensions. The wireless mesh network is consisted with mesh points and stations. Even if mesh points or stations have mobility, the path should be kept continuously. Direction of present mobility research is achieved research in mobility of stations. In case...
Supporting user mobility is an important requirement for wireless mesh networks. We propose a relay-router buffering- and-forwarding scheme for supporting smooth handoff in the infrastructure wireless mesh networks. Our proposal is based on buffering packets at intermediate relay routers in the packets forwarding route and neighboring relay routers working in promiscuous mode which can overhear the...
This paper proposes the performance evaluation and comparison of the main topology-based routing protocols commonly used in wireless ad hoc networks: DSDV, OLSR, AODV and DSR in a different environment such as wireless mesh network. It provides an overview of available solutions based on detailed simulation study. The performance comparison is done with regard to the network size, network load and...
Wireless mesh networks have recently gained a lot of popularity due to their rapid deployment and instant communication capabilities. Special routing protocols are employed, which facilitate routing between the Mesh Routers as well as between the Mesh Routers and the Mobile Nodes. This work addresses a framework of packet routing in the wireless mesh network. We investigate a cross-layer solution...
Low-cost wireless routers are changing the way people connect to the Internet. They are also very cheap, albeit quite limited, Linux boxes. These attributes make them ideal candidates for wireless mesh routers. This paper presents a minimally invasive mechanism for redundant multipath routing in kernel-space to achieve high reliability with high throughput in a mesh network. This service is essential...
This paper proposes a fast forward medium access control protocol (FFMAC) for quality-of-service (QoS) guarantee in multihop IEEE 802.11s wireless mesh networks with multiple channels. To the best of our knowledge, the proposed protocol is the first one which considers the multihop and multichannel issues simultaneously. It provides higher priority for real-time applications, while remaining the distributed...
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