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Transmission of Multimedia Data over Wireless Ad-Hoc Networks

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Transmission of Multimedia Data over Wireless Ad-Hoc networs
A. Berk Barutlu

Abstract
Ad-hoc networking has been of increasing interest and therefore recognized as an important research area in recent years. This paper is about transmission of multimedia data over wireless ad-hoc networks, the problems and the related issues.

1. Introduction

1.1 Ad-Hoc Networks

An ad-hoc network is a collection of wireless mobile nodes that will dynamically form a temporary network without the use of any existing network infrastructure.
The technological developments that have enabled ad-hoc networks are divided into two major groups; the first group is the devices that are small and light enough to carry them around like printers, laptops, PDA’s,… etc., and the second group is wireless network interfaces, like WirelessLAN, Bluetooth, GSM,… etc., that are available for these types of devices . Since no pre-installed base stations are required, ad-hoc networks can be deployed quickly in cases such as conventions, search & rescue, disaster recovery situations and battle field communications. For example, in case of conventions, meetings in which the laptops and the other devices are connected in a wireless network in order to exchange data and share resources, like a printer,… etc.. Another example is the occurrence of natural disaster, like an earthquake, which results in the destruction of existing network facilities. Ad hoc networks fill the communications void created in such a situation to coordinate the efforts of rescue.
Transporting multimedia data over ad hoc networks is a challenging problem. At that point, before the investigation of that problem, first we have to mention the multimedia data and it’s characteristics.

1.2 Multimedia Data

The word multimedia is made up of the two Latin words “ Multi”= “numerous” and“Media”=“medium”= “intermediary” .In information field, Multimedia means “multiple intermediaries” between the source and sink of information or “multiple means” by which information is stored, transmitted, presented, and perceived.Digital multimedia is the field concerned with the computer controlled integration of text, graphics, still and moving images, animation, sounds, and any other medium where every type of information can be represented, stored, transmitted, and processed dig...

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...g and QoS feedback as its essential modules. MRTP is also complementary to SCTP providing the essential functionalities and the flexibility in supporting multimedia services.

4. Conclusion

This paper reviews the ad-hoc networks and their applications, multimedia data and it’s characteristics, and the problems with possible solutions about transmission of multimedia data over wireless ad-hoc networks. In addition, the transport layer protocols for multipath transport of multimedia data, multimedia traffic partitioning, and a brief information about Multi-flow Realtime Transport Protocol (MRTP).

5. References

[1] Carla-Fabiana Chiasserini. Wireless Ad-hoc Networks, Politecnico di Torino
[2] Shiwen Mao, Dennis Bushmitch, Sathya Naramayan, Shivendra S. Panwar. MRTP, Polytechnic university.
[3] Thomas Plagemann, Jon Egil Andersson, Vera Goebel, Carsten Griwodz, Pal Halvorsen. Ad-hoc Info Ware: Middleware Services for Information Sharing in Ad-hoc Networks, University of Oslo.
[4] Yihan LÝ, Shiwen Mao, Shivendra S. Panwar. The case for multipath multimedia transport over wireless ad-hoc networks.
[5]L.E:Doyle, A.C.Kokaram,.O.Mahony Trinity college.
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