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In this paper, we develop and study a model to identify cost optimized Multi-Path Entity (MPE) locations in the context of hybrid fixed and mobile access for a large German telecom operator. We consider the operator's network architecture as well as the related cost components including network elements and nodes. The objective is to support future network planning with a techno-economic sensitivity...
In recent years, improving network model and enhancing the network performance have received people's attention gradually. The peer-to-peer network model has been used in Ad Hoc networks to increase the data output rate, to reduce the transmission power, to increase network capacity and the better load balance. However, the network analysis topology computation, the routing and the energy supply have...
The rapid growth of emerging techniques for mobile resource sharing, content sharing, mobile social networks, and complex cyber-physical systems poses significant challenges for trust and security management. Several trust management schemes have been proposed recently to counter the security threat on Peer-to-Peer (P2P) systems. However, due to the difficulties caused by system mobility, wireless...
Peer-To-Peer (P2P) and Mobile Ad hoc Networks (MANETs) share the same key concepts of self-organization and decentralization, and both aim to provide connectivity in a completely decentralized manner. Routing algorithms for MANETs can potentially benefit from the combination with P2P overlay routing algorithms. Some efforts have been made to integrate P2P overlay into MANETs, but all work is based...
The topological properties of mobile P2P Ad Hoc networks are critical factors that dominate the performance of these networks. The node degree and diameter of these networks are most important parameters which measure the autonomy, efficiency, robustness and load balancing of these networks. In order to improve the four features for these networks, researchers have proposed many practical systems...
Enhancements of transmission speed and mobile node capability in wireless access networks enable people to watch movies and share large files with friends via their personal mobile devices. Considering the increased demand for such services in the next five to ten years, we will need to introduce P2P architectures to mobile networks to handle the large number of requests from mobile nodes. However,...
Emergency services and networks are an emerging area of scientific research. During an emergency scenario such as forest fires, earthquakes, tsunamis and terrorist attacks rescuers need to establish communication to coordinate their actions by using smart and lightweight mobile devices. To this end, autonomous networks should be utilised to support the afore communications. Mobile Ad-hoc Networks...
Analyzing the network coding and its application in mobile P2P network, a novel network coding dynamic node selection method in mobile peer-to-peer (P2P) network is proposed, which the hierarchical network structure divides the nodes into super node (SN) and ordinary node (ON). Considering the heterogeneous and dynamic characteristics, part coding node (CN) selection program is adopted, which overcomes...
Recent years, the mobile ad hoc networks (MANETs) research community has been very active. Thus, it is of growing importance to build distributed network applications on top of MANETs. DHT is known as a popular technique to build efficient distributed applications in the Internet. However, in MANETs, DHT needs to consider network traffics, moving of nodes and energy efficiency more carefully than...
DHT-based peer-to-peer (P2P) systems construct an overlay network over the physical network where neighborhood relations are determined randomly using a hashing scheme. This usually results in a mismatch between the P2P overlay and the physical network, leading to high latencies and communication overheads. In this paper we propose a topology-based model assignment to solve the topology mismatch for...
Efficiently discovering services in terms of diversified service constraints in a dense MANET is a challenging issue. This paper proposes to build a distributed suffix tree on backbone nodes as XML-based services?? index to provide a concise profile for service descriptions. Moreover, a content-addressable P2P overlay and corresponding fault-tolerance mechanisms are introduced to support the distributed...
Location-based services (LBS) are currently receiving world-wide attention as a consequence of the massive usage of mobile devices, but such location services require scalable distributed infrastructures in order to resolve spatial queries efficiently. We propose a novel methodology to enable geographical query support to distributed hash tables (DHTs). The contributions of our methodology are the...
Peer-to-peer constructed on the basis of the distributed hash table don't consider the underlying physical network topology when it build logical overlay, which lead to topology mismatch. In the mobile environment, nodes move randomly, join and leave frequently, which have exacerbated the underlying physical network topology dynamic changes, and further exacerbated mismatch between the logical overlay...
Low efficiency occurs just because physical topology isn't considered when Mobile Peer-to-Peer (MP2P) constructs overlay network; this paper will propose a novel vector location-based algorithm based on Distributed Hash Tables (DHT) algorithm. Using pole coordinates to divide physical network into different zones, constructing new routing protocol based on the location vector information; thus, nodes...
Both Peer-To-Peer (P2P) and mobile ad-hoc networks (MANETs) aim to provide seamless connectivity and services in a dynamic and decentralised environment. These two technologies, if unified, may be able to realise MANETs as a viable commercial technology and will enable the development of widespread distributed applications for MANETs. The push towards wireless ubiquitous computing means that service...
UbiSettlers is a prototype of a mobile multiplayer game for hybrid networks running on real hardware. It uses dynamic adaptation and topology control mechanisms to deal with problems inherent to ad hoc and wireless infrastructured networks. In particular, a globally consistent view on the game's state is not mandatory. This is facilitated by resolving inconsistencies through appropriate integration...
With the emergency of the ubiquity of mobile personal computing devices and the pervasiveness of wireless broadband communication, mobile ad hoc networks (MANETs) are becoming applicable and popular in the area of pervasive computing. A device can roam into a wireless network to provide networked services which can be discovered and utilized by other services. However, the prevalent service discovery...
In mobile peer-to-peer (MP2P) networks, nodes tend to gather together rather than scattered uniformly across the network area. This paper considers the clustering of peer nodes and its performance impact in MP2P networks. The model for node clustering based on a heavy-tail distribution is first introduced and then a topology generation method that produces a clustered network is presented. Experiments...
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