MWAHCA: A Multimedia Wireless Ad Hoc Cluster Architecture

Abstract

Wireless Ad hoc networks provide a flexible and adaptable infrastructure to transport data over a great variety of environments. Recently, real-time audio and video data transmission has been increased due to the appearance of many multimedia applications. One of the major challenges is to ensure the quality of multimedia streams when they have passed through a wireless ad hoc network. It requires adapting the network architecture to the multimedia QoS requirements. In this paper we propose a new architecture to organize and manage cluster-based ad hoc networks in order to provide multimedia streams. Proposed architecture adapts the network wireless topology in order to improve the quality of audio and video transmissions. In order to achieve this goal, the architecture uses some information such as each node's capacity and the QoS parameters (bandwidth, delay, jitter, and packet loss). The architecture splits the network into clusters which are specialized in specific multimedia traffic. The real system performance study provided at the end of the paper will demonstrate the feasibility of the proposal.

QoS Routing for Multimedia Communication over Wireless Mobile Ad Hoc Networks

“…Consequently, LEM middleware can be useful for applications like localized-video-conferencing or localized-rescue-operation. Diaz et al (2014a) have proposed the Multimedia Wireless Ad-Hoc Cluster Architecture (MWAHCA) to create and manage the cluster-based wireless MANET to provide multimedia streaming over it. It claims to provide proper QoS for a cluster-based wireless MANET.…”

Fault Tolerant Mechanism for Multimedia Flows in Wireless Ad Hoc Networks Based on Fast Switching Paths

“…In this section, we are going to explain how fault tolerance is managed in the MWAHCA architecture. As proposed in [11], MWAHCA is a multimedia wireless ad hoc network architecture based on clusters. The aim of this model is to provide the reference framework in order to build an efficient and robust network protocol which can improve QoS and QoE parameters on multimedia transmissions through ad hoc wireless networks.…”

“…In the MWAHCA architecture, nodes are grouped in several clusters following the Multimedia Init Profile (MIP) configuration as described in [11]. The MIP configuration collects the hardware characteristics that a node must fulfill in order to join a cluster.…”

“…As [10] shows, some of the main requirements of the hierarchical routing protocol in multimedia ad hoc and wireless sensor networks is to minimize the signaling overhead for cluster formation and guarantee multimedia retrieval and retransmission [11]. In addition, the routing protocol should be able to ensure good levels of QoS and Quality of Experience (QoE) in routes where multimedia and scalar data are transmitted.…”

“…In this paper, we are going to propose a new fault tolerant mechanism for wireless ad hoc networks. The algorithm will be developed inside the MWAHCA framework following [10,11] specifications. The main objective of our proposal is to have an algorithm to provide fault tolerance to each multimedia flow in a wireless ad hoc network running a protocol based in the MWAHCA architecture.…”