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.
The routing protocols for wireless sensor networks and underwater wireless sensor networks can be roughly
Johnson, D., Maltz, D. (1996). Dynamic Source Routing in Ad-hoc Wireless network. Print ISBN: 0 79239697 0
Peer-to-peer networking has existed for years. The IP routing structure of the Internet is still peer-to-peer, albeit with several layers of hierarchy, and individual routers act as peers in finding the best route from one point on the net to another[4]. However, it is only recently, with the development applications that utilize P2P to create vast stores of media files, that it has become immensely popular. While these applications only account for a fraction of peer-to-peer networking's uses, they have received the majority of the attention.
[9] Thomos, N., Boulgouris, N. V., & Strintzis, M. G. (2006, January). Optimized Transmission of JPEG2000 Streams Over Wireless Channels. IEEE Transactions on Image Processing , 15 (1).
In the early stages of the computer textual and numeric data were the only data which has to handle. As computer technology developed rapidly, technologies were introduced and multimedia representation of data has got the attention of the world. Now personal computers, hand held devices become very popular and use multimedia data. In these technological advance devices are capable of capturing and displaying high resolution multimedia data (Rivero and Doorn et al., 2006). Parallel to processing power growth on these devices to handle multimedia data, storage and data communication also have increased their capabilities in the recent past. Nowadays most of the electronic devices live with multimedia data and expected to grow tremendously in the future (Subrahmanian and Jajodia, 1996).
8) Ian F. Akyildiz, Ismail H. Kasimoglu, “Ad Hoc Networks’’, Wireless sensor and actor networks: Research Challenges, Georgia Institute of Technology, USA, May-2004.
Iw – External tools that need to be downloaded that able to configure and show information about wireless networking.
When designing networked applications one key protocol stands out as the foundation for making it possible. That protocol is TCP/IP. There are many protocols out there that allow two applications to communicate. What makes TCP/IP a nice protocol is that it allows applications on two physically separate computers to talk. What makes TCP/IP great is that it can do with two computers across a room or across the world. In this paper I will show you how TCP/IP allows a wide array of computer hardware to work together without ever having to knowing what the other machine is or how it even works. At the same time you will learn how it allows information to find its way around the world in a faction of a second without knowing in advance how to get there.
In order to transfer data between layers, a bitstream is split into frames containing the frames source and destination information. Errors can occur during transmission of frames which are rectified using a suitable protocol. Frames are transferred between LAN devices by the data link layer. A frame contains a header which includes the source and destination address of the frame. Frames are delivered using...
There are many characteristics and challenges that should be taken into consideration when developing multicast routing protocols, like the dynamically changing network topology, limitation of network scalability. There are different types of protocols like unicast protocols [1], [2], cluster based protocols [3] In this paper we discuss about multicast routing for vehicular Ad hoc network which is different from other Ad Hoc networks [4]. Generally there are two types of multicast routing protocols in wireless networks. Tree-based multicast routing protocol, mesh based routing protocol [5]-[8]. In the tree-based multicasting, structure can be very much unstable in multicast ad-hoc routing protocols, as it needs frequent re-configuration in dynamic network. One such example is Multicast extension for Ad-Hoc On-Demand Distance Vector (MAODV) and Adaptive Demand- Driven Multicast Routing protocol (ADMR). The second type is mesh-based multicast protocol. Mesh-based multicast routing protocols are more than one path may exist between a source destination pair, Core-Assisted Mesh Protocol (CAMP) and On-Demand Multicast Routing Protocol (ODMRP) are an example for these type of classification[9]. One approach to multicast is to maintain a multicast tree in straight roads. Existing protocols for multicasting encounters quite a lot of troubles in mesh maintenance and regular reconfiguration when link breakage occurs. The extreme dependency of these protocols on upstream and downstream nodes leads to storage and control overhead. Furthermore, various protocols consider the shortest path as a decisive factor for path selection, Existing forwarding state for the multicast distribution mesh for the source and the group. The nonexistence of data...
In a client-server network, the capability of the server will decline as the amount of clients asking for services from the server increment. In spite of that, in P2P systems overall network performance really enhances as an increasing number of nodes are added to the system. These companions can arrange themselves into a specific purpose groups(ad hoc) as they impart, work together and offer data transfer capacity with another to finish the current workload (sharing of files). Each companion can transfer and download at the meantime, and in a procedure like this, new companions can join the group while old companions leave at whatever time. This active re-association of group peer members is not opaque to ultimate consumer.
In following paragraphs of this paper will be described the main concepts of a wireless
A wireless sensor network is a set of wireless sensor nodes that organizes a network by itself without the need to have a decentralized communication infrastructure. Numerous functions are performed by the sensor nodes, such as collection of the information, after which the processing of the information is done and finally the storage of the information takes place along with the wireless communication. It consists of large number of sensor nodes and a limited number of sink nodes. Data which is collected by the sensor nodes is then transmitted in the sensor field. The information sent by the sensor nodes are made accessible to the users and also processed to the sink nodes [1].
At SRM, I was introduced to the true expanse of computer science. Subjects such as Computer Networks, Algorithms, Probability theory, Principles of programming languages and Data Structures piqued my interest as they allowed me to explore my analytical, logical and creative attributes. Computer Networks, in particular, taught me the importance of sharing of information – the first and foremost thing that we care about. Gradually, my tryst with computer networks become intense as I began to explore more and more about their significance and applications in various facets of life: education, social media, research, entertainment, etc. This fascination and exploration led me to do my final year project on mobile ad hoc networks under the guidance of Professor Velmurugan P. It presents a lifetime prediction routing algorithm that maximizes the network lifetime of MANETS by selecting the least dynamic route with long lifetime for maintaining the uninterrupted data flow. Later on, the pap...
This report will provide an insight view of potential of ad hoc network and the technical issues that developers and the protocol developers face with it. These issues could be such as internet connection, routing service, resource discovery etc.