Abstract

Router Vs Gateway
Abstract. We study high-throughput multicast solutions for wireless mesh networks (WMN). Two techniques in WMN design are considered for combating wireless bandwidth limitations and wireless interference, respectively: introducing multiple mesh gateways and exploiting the diversity of wireless channels. We target a cross-layer solution that jointly (a) selects appropriate channels for each mesh node to use, at judiciously tuned power, and (b) computes the optimal multicast flows associated with the channel assignment. Our solution is obtained by first formulating the WMN multicast problem into a mathematical program, and then designing an iterative primal-dual optimization framework for it based on Lagrange relaxation and primal problem decomposition. Solution algorithms for the decomposed sub-problems are designed to complete the solution. In particular, a progressive channel assignment heuristic is introduced at the MAC/PHY layer. Through extensive simulations, we demonstrate the effectiveness of the proposed solution framework and the sub-problem heuristics. In particular, a throughput improvement of up to 100 % is observed when compared to straightforward approaches of utilizing multiple wireless channels for mutlicast routing.
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9 Cellular Wireless Networks GSM Architecture Protocols Connection Establishment Frequency Allocation. And MN back to CN. What is meant by a binding cache? One way to optimize the route is to inform the CN of the current location by caching it in a binding. Discuss in detail about the medium access control layer of IEEE802.11.

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- Jun 06, 2002 A network-based mobile workgroup system has considerably wider appeal and application than normal virtual private networks in that it provides seamless mobility across a number of access technologies at the same time as it offers a granular security separation down to workgroup level.
- Alicherry, R. Bhatia, and L. Li, “Joint channel assignment androuting for throughput optimization in multi-radio wireless meshnetworks,” in MobiCom, 2005. Vaidya, “Multi-channel mac for ad hoc networks:Handling multi-channel hidden terminals using a single transceiver,” inMobiHoc, 2004.