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We propose a novel position-based routing protocol Anchor-based Connectivity Aware Routing (ACAR) for Vehicular Ad-hoc Networks (VANETs), which considers both buses and cars as vehicular nodes running in both clockwise and anti-clockwise directions. ACAR is a hybrid protocol, uses both the greedy forwarding approach and the carry-store-and-forward approach to ensure the connectivity of the routes...
Wireless links are often asymmetric due to the heterogeneity in transmission power of devices, the limitation of node energy, different antenna gain among nodes and non-uniform environmental noise. Nevertheless, most of the routing algorithms for ad hoc networks assume that all wireless links are bidirectional, such algorithms are not able to react to or exploit the full connectivity of the network...
In Partially Connected Networks, the hop-by-hop forwarding scheme usually ignores the existence of multi-hop path segments, and therefore miss some good forwarding opportunities. In this paper, we proposed a new hybrid routing algorithm that combines the positive aspects of DSR and asynchronous routing in DTN, called Mobile Tendency Based Hybrid Routing (MTHR). MTHR utilizes a multi-hop neighbor discovery...
The single message ferry routing scheme works well in the small scale clustered DTNs (Delay/Disruption Tolerant Networks). However, as the increasing of the network scale, this scheme will lead to high delay. To solve this problem, a hierachical multiple ferries routing scheme (HMFRS) was proposed in this paper. In this scheme, a message ferry and a ferry access point are deployed in each DTN cluster,...
Delay Tolerant Networks (DTNs) are occasionally-connected networks. They have high latency, long queuing time, limited resources and intermittent connectivity, which are different from traditional networks. Message Ferry (MF) scheme provides efficient data delivery for DTNs. In the MF scheme, nodes move proactively to send and receive messages. In this paper, we propose a ferry routing scheme for...
Abstract-Network Coding Opportunistic Routing (NCOR) methods of wireless mesh networks have the advantage of high throughput and high reliability. However, they suffer problems of higher decoding latency and frequent packet collisions. Also, they have the deficiency in supporting multi-type services. Focusing on the QoS problems of multi-service supporting, we study the optimized NCOR routing methods...
The design of a routing protocol for Unmanned Aeronautical Ad-hoc Networks (UAANETs) is a great challenge, especially due to the high mobility of Unmanned Aerial Vehicles (UAVs). Among all routing protocols that have been designed for UAANETs, the Reactive-Greedy-Reactive (RGR) [1] protocol has been proposed as a promising routing protocol in high mobility and density-variable scenarios. However,...
The ZigBee wireless sensor network is an important supporting technology of IoT (Internet of Things). For the reason that various applications of IoT may incur heavy traffic on the network of ZigBee, and the existing methods of constructing ZigBee topology routing tree fail to consider both the link configuration and the busy-degree of the node, so the existing routing algorithm should be optimized...
Now the mainly research on the protocol of mobile vehicle network is based on connected networks. But this method has its limitations. The majority nodes in this network have the constraint that they have sufficient density and moderate mobility. In fact, the nodes in highway environment have very high speed and the network topology changes very quickly. This makes the link between nodes instability...
In the past, we have proposed an intersection graph (IG)-based vehicular ad hoc network (VANET) architecture for efficient unicast communication in the city urban. Thus, the source vehicle can leverage the proposed IG and IG bypass routing protocols to greedily forward unicast packets to the destination vehicle via each intermediate intersection in the calculated least cost IG path. However, when...
As the world is moving towards the “Internet of Things” [1], Internet Protocol enabled wireless sensor network is becoming an important research area. In order to make it possible and to facilitate transmission of IPv6 packets over low powered networks, 6LoWPAN [9,11] has been introduced. 6LoWPAN incorporates an adaptation layer between network and data link layers. Two routing schemes are used in...
A MANET (Mobile Ad Hoc Network) can support large as well as small scale network topology. Based upon our specific small scale MANET requirement, we have taken the combination of horizontal and vertical topology with less number of nodes to check how the various MANET protocols like pro-active (DSDV) and re-active (AODV and DSR) performs in this manner. In this research study, we have observed these...
We propose a three-dimensional (3D) reconfigurable data-path accelerator which is capable of running partitioned large data flow graphs (DFGs) on the layers of 3D stack, while inter-layer connections are implemented by means of through-silicon vias (TSVs). A tool for mapping data flow graphs has been developed, and a key 3D-specific problem namely routing nets on 3D architecture has been discussed...
Track assignment is a critical step between global routing and detailed routing in modern VLSI chip designs. Crosstalk, which is largely decided by wire adjacency, has significant impact on interconnect delay and circuit performance. Therefore, the amount of crosstalk should be restrained in order to satisfy timing constraints. In this work, a novel track assignment algorithm is proposed to reduce...
The exponential traffic growth and the increasing complexity of WDM networks demand a more sophisticated control protocol that will provide a more efficient use of optical network capacity. Many researchers propose to extend GMPLS protocol suite to activate WDM networks, such as by enhancing OSPF-TE, RSVP-TE, etc., the decentralization of control functions is also an inevitable trend of developing...
Due to the limitation of DTN resource and intermittent connection, it's challenging to design a mechanism which achieves high message delivery successful ratio and control congestion to satisfy the demand. In this paper, a novel DTN congestion control routing mechanism, Ant Colony Optimization(ACO) for DTN congestion control algorithm(ADC) is proposed. In the message delivery, this mechanism can actively...
As the number of core integration on a single diegrows, buffers consume significant energy, and occupy chip area. A bufferless deflection routing that eliminates router's inputportbuffers can considerably help saving energy and chip areawhile providing similar performance of existing buffered routing, especially for low-to-medium network loads. However when congestion increases, the bufferless frequently...
This paper proposes a composite instruction for path setup and partitioning of a network on chip using segmented buses. The network connects a distributed memory to a coarse grained reconfigurable architecture. The scheme decreases the partitioning and routing instruction in sequencers (S) for the nodes (N) from Nx3 to a single instruction. This reduction in instruction also bear a small performance...
Research on routing in a network of intelligent, lightweight, micro and nano-technology sensors deployed in or around the body, namely Body Area Network (BAN), has gained great interest in the recent years. In this paper, we present an energy efficient, thermal and power aware routing algorithm for BANs named Energy Efficient Thermal and Power Aware routing (ETPA). ETPA considers a node's temperature,...
Several reliable packet routing approaches have been studied to achieve a high reliable VANET by using the Car-to-car communications and Inter-Vehicle Communications. VANET suffers from high mobility, diverse road topologies, and wireless interference, and thus significantly degrades the connectivity of packet transmissions and network performance. The mathematical analysis can help the approach efficiency,...
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