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Mubasher Mushtaq

Bio: Mubasher Mushtaq is an academic researcher. The author has contributed to research in topics: The Internet & Overlay network. The author has an hindex of 1, co-authored 1 publications receiving 41 citations.

Papers
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01 Jan 2006
TL;DR: This paper presents a state of the art study on several solutions, which exploit the power of P2P technique to improve the current multimedia streaming protocol.
Abstract: Peer to Peer networks (P2P) consist of a set of logically connected end-clients called peers, which form an application-level overlay network on top of the physical network. P2P solution facilitates contents/files sharing among Internet users in a fully distributed fashion. This paradigm is anticipated to resolve observed limitations in current centralized solution distribution and to significantly improve their performance. P2P networks are undergoing rapid progress and inspiring numerous developments. Although initially P2P networks were designed for file sharing, but their dynamic nature makes them challenging for media applications streaming. Despite recent advances in streaming P2P multimedia system, many research challenges remain to be tackled. This paper presents a state of the art study on several solutions, which exploit the power of P2P technique to improve the current multimedia streaming protocol. Different aspects related to the topic are explored in order to point out the open research issues in the domain of Peer to Peer Multimedia Streaming. Our foremost objective in this paper is to motivate and guide the ongoing research to tackle these challenging problems and help to realize efficient streaming multimedia P2P mechanisms. Concurrently, we observed the extreme popularity of P2P networks during last few years. They are autonomous and distributed systems that aggregate a large amount of heterogeneous nodes known as Peers. These peers incorporate with each other to accomplish some tasks/objectives. Such a system encompasses interesting characteristics like self configuration, self adaptation and self organization. P2P phenomenon offers several facilities. It allows information flow exchange from and back to end user, rapid and dynamic set up of communities sharing the same interests. The main targets of such systems are file sharing applications like Kazaa (15), eDonkey (16), BitTorrent (17)… These intrinsic characteristics make the peer-to-peer (P2P) model a potential candidate to solve the pointed out problem in multimedia streaming over the Internet. P2P networks overcome the setback of bottleneck around centralized server due to its distributed design and architecture. Moreover, it facilitates to manage dynamically the available resources in the networks since they scale with the number of peers in the systems. Although, P2P technology gives novel opportunities to define an efficient multimedia streaming application but at the same time, it brings a set of technical challenges and issues due to its dynamic and heterogeneous nature. Even though the problem has been already studied in the literature (11,12,13,14), works on P2P media streaming systems is still in the early stages, and for a P2P streaming to be enhanced, important research efforts and investigations are still required. Existing P2P protocols must be revised or re-invented and other specific problem need to be addressed to meet the multimedia streaming requirement. Our objective in this article is two fold, firstly to provide a better understanding of the basic concepts of multimedia streaming over P2P networks, and secondly to identify research challenges related to this area. The rest of this article is organized as follows: P2P streaming network architecture is described in section II, a comparison for different video coding techniques in the context of P2P streaming is illustrated in section III, some existing solutions for the P2P media streaming are presented in section IV, we highlight certain issues for the domain in section V and paper is summed up by making some concluding remarks in section VI.

41 citations

Proceedings ArticleDOI
01 Jan 2022
TL;DR: In this article , a taxonomy diagram for the Ad-hoc Decentralized Network is presented, and a comparison of RSA with Diffie Hellman is also illustrated.
Abstract: With the rapid growth of wireless communication, sensor technology, and mobile computing, the ad hoc network has gained increasing attention from governments, corporations, and scientific research organisations. Ad hoc and sensor network security has become crucial. Malicious node identification, network resilience and survival, and trust models are among the security challenges discussed. The security of ad hoc networks is a key problem. In this paper, we'll look at a few security procedures and approaches that can be useful in keeping this network secure. We've compiled a list of all the ad networks' descriptions with explanations. Before presenting our conclusions from the examination of the literature, we went through various papers on the issue. The taxonomy diagram for the Ad-hoc Decentralized Network is the next item on the agenda. Security is one of the most significant challenges with an ad hoc network. In most cases, cyber-attackers will be able to connect to a wireless ad hoc network and, as a result, to the device if they reach within signal range. So, we moved on to a discussion of VANET, UAVs security issues discovered in the field. The outcomes of various ad hoc network methods were then summarised in the form tables. Furthermore, the Diffie Hellman Key Exchange is used to investigate strategies for improving ad-hoc network security and privacy in the next section, and a comparison of RSA with Diffie Hellman is also illustrated. This paper can be used as a guide and reference to provide readers with a broad knowledge of wireless ad hoc networks and how to deal with their security issues.

Cited by
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01 Jan 2003
TL;DR: 一位网友告诉笔者可以这个torrent文件顿时傻了眼:难道这就是我要的电影 ?
Abstract: 一位网友告诉笔者可以下载一些精彩电影,但是网友并没有告诉笔者电影的下载地址,而是用QQ传来一个只有20KB大小的torrent类型文件,让笔者用BitTorrent下载。笔者看着这个torrent文件顿时傻了眼:难道这就是我要的电影?什么又是BitTorrent?

131 citations

Journal ArticleDOI
TL;DR: An energy trading model is proposed to address the problems occurring in the specific case of Nepalese energy market, and an in-depth discussion on its various operating algorithms, their principles, characteristics, features and scope are discussed.
Abstract: Distributed Energy Resources (DERs) are being integrated into the power market by customers rather than large scale energy suppliers, thereby slowly transforming the centralized, unidirectional market to a decentralized, bidirectional market and transitioning customers into prosumers. Various system architectures are used in the real field to coordinate the energy distribution in the micro/ mini-grids integrated with DERs, all of which have their strengths, weaknesses and challenges. Peer-to-peer (P2P) is an emerging architecture in the field of electrical energy trading and Distributed Generation (DG) management that can be applied in local energy markets. This paper focuses on P2P energy trading, with an in-depth discussion on its various operating algorithms, their principles, characteristics, features and scope through state of art review on P2P. Furthermore, the energy system of Nepal is used as a case study in this paper, and the micro/mini-grids of Nepal and their associated challenges, constraints and opportunities for improvement are discussed. Finally, an energy trading model is proposed to address the problems occurring in the specific case of Nepalese energy market.

97 citations

Journal ArticleDOI
01 Oct 2006
TL;DR: A new peer-to-peer architecture for multipoint video conferencing that targets end points with low bandwidth network connections (single video in and out) is presented, which allows each conference participant to see any other participant at any given time under all multipoint configurations of any number of users.
Abstract: A new peer-to-peer architecture for multipoint video conferencing that targets end points with low bandwidth network connections (single video in and out) is presented. It enables end points to create a multipoint conference without any additional networking and computing resources than what is needed for a point-to-point conference. The new architecture is based on layered video coding with two layers at the end points. It allows each conference participant to see any other participant at any given time under all multipoint configurations of any number of users, with a caveat that some participants may have to receive only the base layer video. Layered encoding techniques usable within this architecture are described. A protocol for implementation of the new approach has been developed and simulated. Its performance is analyzed.

40 citations

Proceedings Article
15 Feb 2009
TL;DR: A Hybrid P2P Overlay (HyPO) approach for live media streaming that pursues the robustness of transmission structure by promoting peers that are considered stable in the mesh overlay as members of tree overlay.
Abstract: For supporting Peer to Peer (P2P) based live media streaming, a P2P overlay network should be able to accommodate robustness, peer heterogeneity, and scalability. In this paper, we have proposed a Hybrid P2P Overlay (HyPO) approach for live media streaming. In the proposed scheme, the overlay network consists of mesh and tree overlay. The mesh overlay is organized by peers that have the similar bandwidth ranges in geographical place. The tree overlay is formed by stable peers, and is constructed over the mesh overlay. We have pursued the robustness of transmission structure by promoting peers that are considered stable in the mesh overlay as members of tree overlay. Depending on the tree optimization mechanism, the peers which have a large bandwidth will be near to the media source node in the tree overlay, and evenly distributed in the tree with branches of a similar depth. As a result, the tree optimization reduces the average depth of the tree, which enhances the scalability. We evaluate HyPO through simulation. The results demonstrate the efficiency and scalability of our HyPO.

24 citations

Proceedings ArticleDOI
21 Jun 2009
TL;DR: This work proposes a novel Cross-Layer And P2P based Solution (CLAPS) that distributes a live video stream using an overlay constructed by the Multicast Overlay Spanning Tree (MOST) protocol and has adopted the Multiple Description Coding (MDC) to create multiple video descriptions for a given video stream.
Abstract: Peer-to-Peer (P2P) technology has been shown to be effective for content delivery on the Internet. Its applications such as video streaming on Mobile Ad hoc NETwork (MANET) has been explored while the issue of live video streaming on MANET is still a real challenge due to frequent changes in network topology, and the sensitiveness of radio links. To combat these challenges, we propose a novel Cross-Layer And P2P based Solution (CLAPS) that distributes a live video stream using an overlay constructed by the Multicast Overlay Spanning Tree (MOST) protocol. In this solution we have adopted the Multiple Description Coding (MDC) to create multiple video descriptions for a given video stream. CLAPS then distributes pieces to the closest peer which on its turn shares the pieces among the interested peers using the MOST protocol. We compared the performances of the CLAPS with that of the original MOST and we showed that in most of the cases CLAPS substantially increases the continuity index of the video stream and significantly, CLAPS performs better with high mobility and with more than one video stream.

18 citations