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The 10Gbase-KR protocol is widely used to accomplish the high speed data conversion in the Ethernet area. This paper presents a design of the critical controller in the physical coding sublayer based on the 10Gbase-KR. In order to satisfy the demand of the high speed data conversion, the scrambler and descrambler are specially designed to work in a parallel mode. The post-synthesis simulation results...
As wireless and telecommunicaton infrastructure communications have been integrated into modern vehicle systems (i.e., infotainment systems and vehicle to vehicle systems), the security implications on the relatively unchanged underlying network protocols inside the vehicles are investigated by researchers and industrial experts in the corresponding domain. Some researchers have achieved the investigation...
It has been shown that secure communication between two partners can be achieved with devices containing components with quantum properties. While such devices are in timid stages of practical availability, the quantum properties exhibited are well defined theoretically: quantum bits (qubits) in persistent quantum states, quantum transformations or gates applicable on qubits, and quantum communication...
A system implementation framework is presented for configurable high-speed IP over AOS gateway in this paper. Pipeline operation and asynchronous FIFOs are adopted to achieve rate matching and data synchronization between different clock domains. The format of configuration packet of IP over AOS gateway and finite state machine description of protocol are given. The simulation results show that the...
The deployment of wireless sensor networks in many application areas requires self organization of the network nodes into clusters. The clustering Algorithm is a kind of key technique used to reduce energy consumption. Efficient way to enhance the lifetime of the system is to partition the network into distinct clusters with a high energy node as cluster head. The different methods of node clustering...
In the next generation network, the parlay gateway is the core entity, which is prone to overload. After analyzing the relation between service quantity and CPU utilization ratio in parlay gateway, an adaptive overload control algorithm based on ticket bank (AOCATB) implemented in parlay gateway is proposed. AOCATB is made up of a main algorithm and an assign algorithm. The overload control algorithm...
The design principles of clinical PET data acquisition protocols require images of high statistical quality, while the scanning time remains relatively short and the total amount of radioactive dose does not exceed a level, above which significant count losses are observed. This can be satisfied by determining a range of injected dose levels where the performance parameter of noise equivalent count...
A number of transition mechanisms have been developed to support the interoperability between IPv4 and IPv6 during the time of migration from the existing IP version (IPv4) to the new IP version (IPv6). BDMS is one of the IPv4/IPv6 transition mechanisms that has been designed to enable IPv4-only hosts to communicate with IPv6-only hosts and vice versa; while DSTM has been designed to enable IPv6 hosts...
This paper studies TCPpsilas fairness issues in WSNs, and designs an improved congestion control algorithm based on the characteristics of the WSNs (Wireless Sensor Networks). The protocol is designed as extension to DCCP (Datagram Congestion Control Protocol) with a new congestion control component. We also implemented this congestion control algorithm in NS2. Simulation results show improvements...
Automatic generation of code starting from lightweight modeling languages such as UML is by now a widely adopted approach. In particular generation of executable SystemC models starting from StateCharts and other UML diagrams represents a promising research field. While RTL SystemC appears better suited for matching the StateCharts formalism (being intrinsically clocked), performances of the generated...
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...
This work describes simulation of wireless control using the WirelessHart standard. Specifically issues concerning clock drift between controllers and wireless network are addressed. The simulations have been done using an extension of the Simulink package TrueTime.
The underwater target localization problem is one important application for underwater acoustic sensor networks. This paper, based on "underwater acoustic transmission theory", solves the target localization problem. The proposed algorithm firstly studies the principle of underwater acoustics and applies it to set up the model of underwater signal energy transmission. According to the model,...
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...
The ever changing demands on computational resources has information systems managers looking for solutions that are more flexible. Using a ldquobigger boxrdquo that has more and faster processors and permanent storage or more random access memory (RAM) is not a viable solution as the system usage patterns vary. In order for a system to handle the peak load adequately, it will go underutilized much...
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...
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