20-09-2017, 02:58 PM
Mobile ad hoc networks (MANET) are becoming more essential for wireless communications because of the growing popularity of mobile devices. A node in MANETs could act as a router, having at the same time the possibility of being the sender or receiver of the information. MANETs offer the freedom to use mobile devices and move independently of the location of base stations (and outside their coverage) with the help of other network devices. The ability of MANETs to be autoconfigured and form a mobile mesh network, using wireless links, makes them very suitable for a number of cases that other types of networks can not function. In addition, MANETs do not require large technological investments. An ideal application area for the use of MANET technology is, for example, any disaster scenario in which the fixed infrastructure is incapacitated or does not exist. In this case, it is important to ensure that an appropriate communication solution is established in the first critical hours of an incident, taking into account national or cross-border emergency incidents. What is missing, however, from such networks is the so-called "killer application" that could boost their uses in the real world. Real-time multimedia applications have the potential to make MANET a very attractive solution in wireless networks considering their unique features. Our motivation for this article is to present the shortcomings and current state of the art in MANETs with regard to multimedia data transmission, which is a promising area of application.
Wireless ad hoc networks provide a flexible and adaptable infrastructure for transporting data in a wide variety of environments. Recently, real-time audio and video data transmission has increased due to the emergence of many multimedia applications. One of the main challenges is to ensure the quality of multimedia flows when they have passed through a wireless ad hoc network. Requires adapting the network architecture to the requirements of multimedia QoS. In this article we propose a new architecture to organize and manage ad hoc cluster-based networks in order to provide multimedia flows. The proposed architecture adapts the wireless network topology to improve the quality of audio and video transmissions. To achieve this goal, the architecture uses some information such as the capacity of each node and the parameters of QoS (bandwidth, delay, jitter and packet loss). The architecture divides the network into clusters specialized in specific multimedia traffic.
Wireless ad hoc networks provide a flexible and adaptable infrastructure for transporting data in a wide variety of environments. Recently, real-time audio and video data transmission has increased due to the emergence of many multimedia applications. One of the main challenges is to ensure the quality of multimedia flows when they have passed through a wireless ad hoc network. Requires adapting the network architecture to the requirements of multimedia QoS. In this article we propose a new architecture to organize and manage ad hoc cluster-based networks in order to provide multimedia flows. The proposed architecture adapts the wireless network topology to improve the quality of audio and video transmissions. To achieve this goal, the architecture uses some information such as the capacity of each node and the parameters of QoS (bandwidth, delay, jitter and packet loss). The architecture divides the network into clusters specialized in specific multimedia traffic.