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Since our research to study mobility, we noted that the best way to represent the mobility of sensor nodes is to follow a mobility model. Numerous models have been proposed in the literature, they are commonly used as a data source in all kinds of studies, including motion in several networks. To this end, we propose to exploit this mobility, which results in the proposal of a new approach based on...
Multi-level clustering offers the scalability that is essential to large-scale ad hoc and sensor networks in addition to supporting energy-efficient strategies for gathering data. The optimality of a multi-level network largely depends on two design variables: 1) The number of levels, and 2) The number of nodes operating at each level. We characterize these variables within a multi-hop, multi-level...
The efficient and timely distribution of freight goods is critical for supporting the demands of modern urban areas. Optimum freight ensures the survival and development of urban areas. In the contemporary logistic there are two main distribution strategies: direct distribution and multi-echelon distribution. In the direct distribution, means of transport, starting from the main distribution center,...
Network Simulator(NS-2) is an open source discrete event simulator, widely used by the networking research community. NS-2 provides flexibility for the researcher to extend the simulator functionality for any new area of research in networks. The primary objective of the paper is to investigate the development and simulation of the interface assignment in multi-interface multi-channel wireless adhoc...
The growing of the internet use is proportional with the growing of IP address needs, but the increasing of the IP use is not equal with the number of available IPv4. Then, IPv6 was developed as a solution to overcome the limited amount of IPv4 address. Readiness of various aspects ranging from infrastructure to a service provider is required to implement IPv6. In order to improve the quality of IPv6...
Partial disjoint multipath routing has been largely deployed in networks such as wireless sensor networks, outperforming single path routing in load balance and fault tolerance, etc. However, disjoint multipath routing has not been widely deployed in networks, because the difficulty of designing an accordingly distributed algorithm. Software defined networking (SDN) is based on the abstract of the...
Software-Defined Networking (SDN) is an emerging network architecture that decouples the control plane and the data plane to provide unprecedented programmability, automation, and network control. The SDN controller exercises centralized control over network software, and in doing so, it can monitor and respond to malicious traffic for network protection. This paper proposes a threat-aware system...
In the present work, we developed approaches for effective control of traffic flow in the virtual data center, based on the methods used in the data mining and machine learning to more accurately classify and identify streams of cloud-based applications and network services.
The instability of wireless links makes the choice of forwarding nodes have too many possibilities in opportunistic routing. In this paper, the Markov decision process (MDP) is used to model the whole packet forwarding process from the source node to the destination node, which facilitates making reasonable decisions when the sender selects the forwarding nodes. By solving a finite-state MDP problem,...
Mobile Crowd Sensing Networks (MCSN) treat the ordinary users with their mobile devices as the basic sensing units, and leverage them to distribute complex social sensing tasks and collect sensing data with each other by the mobile networks. To improve the efficiency and the feasibility of data sensing, collection and transmission in MCSN, we propose an opportunistic data transmission mechanism based...
Releasing private data to the future is a challenging problem. Making private data accessible at a future point in time requires mechanisms to keep data secure and undiscovered so that protected data is not available prior to the legitimate release time and the data appears automatically at the expected release time. In this paper, we develop new mechanisms to support self-emerging data storage that...
In conventional wireless sensor networks (hereinafter referred to as WSNs), the single sink node model has been employed to collect and store the measured data that can be accessed by external users of WSNs. However, the single sink model of WSNs can be the single point of failure for some usage. To counter this problem, we can employ multiple gateway-based WSNs. In addition, WSNs are susceptible...
The current Internet should not only support simple packet forwarding, but also be able to provide diverse network functions to compose different routing services on the communication paths for network applications. Meanwhile, the user requirements for different applications are becoming more and more diversified, it is a challenge to distinguish the differences among these requirements in order to...
MapReduce is a programming model used extensively for parallel data processing in distributed environments. A wide range of algorithms were implemented using MapReduce, from simple tasks like sorting and searching up to complex clustering and machine learning operations. Many of these implementations are part of services externalized to cloud infrastructures. Over the past years, however, many concerns...
The complexity of design rules at 22nm and below precludes direct incorporation of detailed routing (DR) rules into a placement algorithm. However, ignoring routability rules during the placement process may result in infeasible designs. The congestion estimated by a global router is conventionally used for routing estimation during placement, but it does not include real detailed routing violations,...
Content-centric networking (CCN) is considered to be the future Internet which moves from host-to-host model to transfer data model based on content name. Network data caching is a characteristic of CCN whose effectiveness depends on the content caching policies in the nodes. Leave copy everywhere (LCE) is the default policy in CCN which caches all content at all nodes leading to poor caching performance...
Since network configurations in the Internet are getting complicated, managing networks has become a heavy task. As an attempt to solve this problem, the concept of Intent-Based Networking (IBN) has been proposed. While intent of a network administrator in conventional networks is used to be expressed in concrete description of configurations stored on devices each, intent of an administrator in IBN...
Nowadays the share of cloud computing technology for hosting applications and services in virtual data centers is constantly growing. This is due to the economic efficiency of IT infrastructure operation. However, avalanche growth of cloud applications and services leads to a number of problems in the existing traditional architecture of data processing centers (DPC). One of such problems is the problem...
Mesh-based multicast routing protocols in Mobile Ad Hoc Networks (MANETS) allow data to be sent to all the members of a network through multiple paths. As a result, these are more efficient in comparison to tree-based protocols, provided the links remain stable over a period of time. Otherwise this redundancy results in a waste of energy on links that eventually die out before complete data transfer...
For making Mobile ad hoc network (MANET) more energy efficient swarm intelligence is used as a base and the clustered based approach as Bee-Ad Hoc-C which is an evolution from Bee-Ad-Hoc has been chosen as the best method in our previous work along with Stable Cluster Maintenance Scheme. In the proposed method parallel routing has been considered to improve the scalability of the system, reduce the...
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