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Because of the feature of hybrid wireless mesh network, hybrid routing protocol is the most proper routing protocol for this kind of network. Hybrid routing protocol is composed of proactive routing protocol and reactive routing protocol. The proactive one is adaptive for static mesh routers, and the reactive one is suitable for mobile mesh clients. Existing hybrid routing protocols all neglect the...
The built-in caching capability of future Named Data Networking (NDN) promises to enable effective content distribution at a global scale without requiring special infrastructure. The aim of this work is to design efficient caching schemes in NDN to achieve better performance at both the network layer and application layer. With the specific objective of minimizing the inter-ISP (Internet Service...
In the context of multi-robot exploring, we work on the particular problem of maintaining communication links between an explorer robots and a base station using autonomous robot routers. In this paper, we propose and describe a kind of exploring application which considers a variable amount of robots over time. This problem opens various research challenges. Afterwards, we focus on the problem of...
These days it is unlikely to find some areas that are not covered by some WiFi, WiMAX, and/or Cellular devices. Wireless Technology has not only shown us the advancement of science, it also has made an enormous impact on our day-to-day life. In recent years, wireless sensor networks (WSNs) have gained a lot of attention to the researchers due to its ability of rapid deployment, low cost and low maintenance,...
Wireless mesh networks are dynamically self-organized and self-configured, with the nodes in the network automatically establishing and maintaining mesh connectivity among them. Wireless mesh networks consist of three types of nodes: clients, routers and gateways. Wireless Mesh Network planning consists of determining the amount of routers needed to meet the demands for Internet access. It is a complicated...
Network topology does not change dynamically in wireless mesh networks. Most of the end-to-end traffic flows are between mesh nodes and gateways. A tree-base routing algorithm is suitable for such network architecture. When using multichannel and multi-interface, routing algorithm and channel assignment is codependent. They should be combined together to fully exploit the network capacity. We propose...
Connectivity with external networks is an essential feature of many ad hoc networks, and such connectivity is enabled by gateway nodes. This paper investigates how the gateways affect the throughput in the ad hoc network. The throughputpsilas dependency on gateway positions, number of gateways and handover properties is sought uncovered by simulations. The results show that the relative positions...
In this paper a BISR architecture for embedded memories is presented. The proposed scheme utilises a multiple bank cache-like memory for repairs. Statistical analysis is used for minimisation of the total resources required to achieve a very high fault coverage. Simulation results show that the proposed BISR scheme is characterised by high efficiency and low area overhead, even for high defect densities...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
Efficient routing among a set of mobile hosts (also called nodes) is one of the most important functions in ad hoc wireless networks. Routing based on a connected dominating set is a promising approach, where the searching space for a route is reduced to nodes in the set. A set is dominating if all the nodes in the system are either in the set or neighbors of nodes in the set. Wu and Li [1] proposed...
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