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In this paper, we propose a distributed fault localization protocol for localizing multi-link failures in EPC global networks. the protocol is based on a parallel limited-perimeter vector matching (P-LVM) mechanism, which restricts fault localization within a smaller perimeter area and can thus significantly reduce fault localization time. by performing a fault localization process sequentially in...
Internet Protocol (IP) suite and Ethernet physical layer are the current trend in home and industrial systems communication protocols. Unfortunately, in the field of power line automation protocols that are in wide use in home automation applications, the lack of IP convergence leads to difficulties, because of the variety and high costs of systems and solutions that need to be integrated. This paper...
With the advancement of Internet technologies and the widespread use of mobile devices, the number of users in conferencing services is increasing quickly. A P2PSIP conferencing system and an IP Multimedia Subsystem (IMS) conferencing system have been designed to provide conferencing services. The IMS conferencing system was developed to adapt to a server-based centralized system, while the P2P network,...
For accessing various resources via mobile device anytime anywhere, the heterogeneous access technologies between wired and wireless networks have been developed and integrated actively. However, real-time services, e.g., Voice over IP (VoIP) and video streaming suffer from long delay, and non-real-time connections, e.g., TCP connections, cause low transmission throughput while occurring timeout and...
Wireless Sensor Networks (WSNs) have attracted significant research interest in recent years because of their suitability to a wide range of real world applications. The envisioned Internet Protocol (IP) support for WSNs requires interoperability with existing management solutions, like Simple Network Management Protocol (SNMP), in order to provide remote management functionality and assure the correct...
With the increasing use of session initiation protocol (SIP) in large deployments and the fact that numerous conventional communication networks have been spread, it is profitably to build a next generation network (NGN) linking circuit and packet-switched networks. This paper is concerned with the quality-of-service (QoS) parameters estimation problem in NGN. We have proposed a mathematical model...
In this paper we propose a fast and energy efficient service provisioning approach. In our work, we focus towards the management of already discovered services. We assert that if the sensor nodes share the important service information among each other, then the service re-discovery can be reduced at greater extent. Hence a significant amount of Service Discover (SD) time and the network energy cost...
The communication between wireless ad-hoc networks and infrastructure-based networks is essential to extend Internet beyond its traditional scope, to remote inaccessible areas, making Web services in ad-hoc networks available anytime, anywhere. The mobile nodes in a wireless ad-hoc network must be able to detect available gateways and select one of them if they want to have Internet access. In this...
Recently, all-IP wireless systems have been standardized under the IP multimedia subsystem (IMS) framework to support next generation value added mobile services. In all-IP networks, multiple base stations connect to IMS policy servers through IP-based access gateways. As users move from one access gateway area into another, the corresponding access gateways initiate signaling flows for QoS authorization...
The last decade has seen explosive growth in the development of mobile applications. This has increased the demand on the wireless communication services. The capability to achieve wireless access anywhere, anytime, and anyplace has become common expectation as it provides significant flexibility and freedom in mobility. But to achieve global mobility in heterogeneous networks for any mobile device...
There is a strong need for a new Internet Protocol to be used in the future networks rather than the existing Internet protocol (IPv4). So, IPv6 is coming with new features and improvements for the devices that will be connected to the network. Therefore, some transition mechanisms are required during the time of migration from IPv4 to IPv6 networks. Furthermore, the BDMS has been proposed and designed...
In an effort to provide seamless mobility support in IMS/MMD networks, operators need to choose a specific IP- based mobility protocol. However, there are several micro- and macro-mobility protocols available that the operators can choose from. Operators often face the challenges of selecting the appropriate mobility protocol that can provide the most cost efficient solution under a specific operating...
In this paper, we propose a suitable set of protocols schematically combining both radio handover and IP handover for heterogeneous network with the enhancement of relay nodes, that is considered as an important feature of the future radio network. Based on that, we develop the functional allocation of media independent handover entities for a 4G communication system developed by the European WINNER...
Based on the comparison of congestion control between aeronautical telecommunication network (ATN) and IP network, a new congestion avoidance model considering the explicit congestion notification (ECN) in ATN over IP scheme, called explicit congestion notification in tunnel (ECNT) model, is proposed in this paper. In addition, a new ECN/CE mapping algorithm to map ECN signal in IP sub-network onto...
One of the vital key elements for providing quality of service (QoS) for VoIP is the call admission control (CAC) capabilities of the session management/call session control function or gateway. Even though the network may be designed to meet a given performance and restoration objective for the engineered traffic loads, the actual traffic may be significantly higher. Without a CAC function in a VoIP...
One of the most critical aspects in mobility management is handoff. Handoff is a complex process involving location identification, performance evaluation of available networks at that location, decision to switch to a different network and actions to effect the switching. During the process of handoff, the communication channel between the mobile host and a corresponding host may be broken, and this...
A scheme that exploits the broadcast nature of the wireless communication in order to achieve multicast content delivery is presented in this paper. As opposed to broadcasting, this method enables the clients to determine on-line the delivered content, and thus preserves the advantages of an individual service. On the other hand, a multicast content delivery is much more efficient than a unicast content...
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