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In order to have the benefits offered by Proactive Routing and Reactive Routing while reducing the undesirable effects of both respectively, Hybrid Routing is suggested to be used in ad-hoc and Mobile Ad-hoc Networks (MANETs). One such hybrid routing protocol is the Zone Routing Protocol (ZRP). ZRP attempts to reduce the initial route discovery delay in case of reactive routing, and the control traffic...
Internet research community has proposed many different multicast routing protocols to support efficient multimedia application such as, IPTV, videoconferencing, group games. Nevertheless, the design of all these protocols does not take into account that group members may be mobile. Indeed, with the arrival of Mobile IPv6 by IETF providing mobile users with continuous access, group members in the...
This paper investigates traffic related performance for TCP/UDP-based traffic flows in a MANET powered by OLSR with various routing metrics. Besides the ETX (expected transmission count), an alternative is proposed that resorts on a cross-layer approach to obtain PER (packet error rate) estimates from the physical layer. Throughput and latency performance are evaluated for various configurations of...
Delay Tolerant Mobile Sensor Networks (DTMSN) has the enormous potential to expand its applications in many previously impossible fields. Because of its intermittent link and limited network resources, this network needs an effective data forwarding algorithm to ensure valid data forwarding and highly delivery ratio. Recent approaches have drawbacks of computing nodes' delivery probability, because...
Push-to-Talk over Cellular (PoC) system in mobile communication network, such as TD-SCDMA, is considered to have more wide coverage and more flexibility than traditional trunk communication systems. It is ideal for group communication in many cooperative work environments. But the foremost block for wider application of PoC system is the longer session setup latency comparing to other trunk communication...
Routing is one of the most significant challenges regarding mobile ad hoc networks (MANETs). Having no fixed infrastructure as well as frequent changes of network topology, as a result of nodes mobility, necessitates cooperation of all nodes in routing of packets. Lack of cooperation in routing can result in performance reduction and even network denial of service. Uncooperative behavior can be performed...
The lack of available and practical analysis about some regular knowledge of mobility models has limit their applications to mobile ad hoc networks. As the mobility models have the great significance effects on the network performance, and meanwhile, existing in-depth researches are mostly based on the i.i.d. mobility model which is a way of globe move, the desire for the effective and reasonable...
In this paper we discuss the architecture of MStack, a data-centric communications stack specifically designed for mobile intermittent networking environments. MStack contains native support for delay tolerant connections, it is resilient to disconnections, and solves other problems associated with mobile devices. The architecture and its main protocols are discussed, together with some examples of...
Vehicles move so fast that they always cause the handover delay problem in the Vehicular Ad Hoc Network (VANET). This problem will lower down the throughput of the network and make the mobile devices' connection to the Internet ineffectively. To solve this problem, we propose a handover mechanism based on Care-of Prefix Pool (CoPP) in VANET with Mobile Network (NEMO). The vehicle adopting our handover...
LED-ID (light emitting diode - identification) is considered as a strong candidate for the future lighting technology due to its lower consumption, lower voltage, longer lifetime, smaller size, and cooler operation. A key issue in LED-ID systems is the guarantee of seamless connectivity when an user, as known as reader, moves from coverage area of a tag to another tag's coverage area. Link switching...
As a fundamental network property, Inter-Contact Time (ICT) determines the critical performance metrics of a vehicular ad-hoc network (VANET). In this paper, we extract the contact information from the traces of Global Positioning System (GPS) from public and semi-public vehicles in a large modern city, including both buses and taxis. By exploring the spatial and temporal properties of the contact...
The lacking of a thorough understanding on the capacity in mobile ad hoc networks (MANETs) has been stunting their applications in the last decade. Available capacity studies focus on exploring either the order sense capacity scaling laws, the closed-form capacity under some specific routing protocols, or the exact capacity without careful consideration of wireless interference issue in MANETs. In...
The high dynamic of mobile peer-to-peer network makes the topology of network changing frequently, inconsistent of overlay network and bottom physical network topology, which can make worse network capability, higher failure rate of super-peer, longer query delay, lower effect of data transmission, as well as lower success rate of resource searching and system instability. This paper proposes a resource...
Efficient link management is important for mesh networking. The links opened between neighbor STAs should be stable and ensure high probability of packet delivery. Various approaches of link management are usually compared by simulation. The core contribution of this paper is original link management efficiency criteria and an analytical model of decision-making process of link management in IEEE...
The main function of biomedical sensor network is to guarantee that the data packets from patients can be delivered reliably to the destination node or medical center. Attached to patients, these nodes can be mobile, thus forming a mobile wireless sensor network (mWSN). Moreover, non-cooperative nodes may also be present in the network. This paper therefore proposes a routing method for non-cooperative...
Network Mobility (NEMO) is becoming an important requirement for today's and tomorrow's IP networks. NEMO can give us internet connectivity while on the move. NEMO Basic Support Protocol (BSP) has been proposed by Internet Engineering Task Force (IETF) in order to address the need of mobile networks. But NEMO BSP has some limitations like inefficient route, high latency during handoff and packet delay...
In order for the mobile networks to stay connected to the Internet, Network Mobility (NEMO) is involved with the management of the different types of movements by mobile routers during rapid changes of the Point of Attachment (PoA). Accordingly to achieve seamless handoff with lower delay and packet loss in NEMO environment, it is very important to get better performance of mobility management protocol...
In this paper we presented results of the performance evaluation of the WCDMA/HSPA radio access network when loaded with multiplayer real-time games and M2M applications traffic. Evaluation was done in a live network, on one Node B. Traffic, characteristic for the emerging Machine Type Communication and online multiplayer games, was generated by an application running on 10 mobile phones in parallel,...
Routing path restitution approach to control and tolerate the congestion in routing models for mobile ad hoc networks is proposed in this paper. Packet loss in network routing is primarily due to link failure and congestion. The majority of present congestion control solutions do not possess the ability to distinguish between packet loss due to link failure and packet loss due to congestion. Here...
Mobile Ad Hoc Network (MANET) is a mutually communication based on a dispersed administration. It has a dynamic topology and there is not any central point for network management. The dynamic topology character of MANET has caused it vulnerable and defenseless to different security attacks. In this paper we study the effects of Wormhole attack on MANET using both Proactive routing protocol (OLSR)...
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