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DHT-based peer-to-peer systems have been proposed in the past few years. Scalability, fault tolerance and searching speed of the DHT based P2P systems have been greatly improved in contrast to the unstructured P2P systems. These DHT-base systems have the problem of load imbalance. We present a load balancing method taking into account Zipf-like requests distribution and the impact of physical networks...
A new paradigm full-connect dynamic networks on chip (FC-DYNOC), which supports the communication among modules dynamically placed on a reconfigurable device at runtime is presented in this paper. Based on the cluster theory, this structure increased the number of connections between router and process element, and the PE has the ability to select the source and the destination router for transmitting...
Emergency data which mean something happened in sudden need to be dealt with timely, otherwise will bring very serious consequences. To ensure the low-delay routing of emergency data, a novel graded routing strategy, dynamic adaptive cooperative routing (DACR) is proposed in this paper. This scheme extends the LEACH protocol to enable the multi-hop transmissions among clusters by incorporating a cooperative...
Aiming to the problem of scalability caused by frequent route updates in current inter-domain routing system, this paper proposes a scalable inter-domain routing update mechanism to restrict the propagating scope of the update, called SIRUM. The autonomous system estimates the probability of that the communications of its neighbors are affected by the update according to the history information of...
In Disruption Tolerant Networks, simply flooding packet scheme has a major drawback in terms of network congestion. This paper proposes a new routing algorithm, called Adaptive Priority Routing with Ack_mechanism (APRA). APRA arranges the forwarding sequence and the dropping sequence based on their assigned priority. The priority is determined by the TTL, Delivery Predictability, and Replication Density...
Multipath inter-domain routing can solve many technical flaws which have been exposed in BGP, but the market-driven factors have more direct relationship with its deployment. In order to analyze impact of these market-driven elements, this paper established an optimization model for Internet service provider (ISP) revenues based on user's utility function. Then, the solution using Lagrange multiplier...
In this paper, we propose two algorithms for broadcasting a large data set with limited loads of all nodes on a DHT-based P2P network using a de Bruijn graph. One of the broadcast algorithms is applied to de Bruijn graphs with the restricted number of nodes. We prove that this algorithm broadcasts a data set along a degree-constrained spanning tree without global knowledge of a P2P network and that...
One of the main challenges in all-IP networks is the development of suitable mobility solution. Mobile IP (MIP) presents the standard protocol used to support IP mobility. However, MIP is inadequate for real-time applications and inter-domain mobility (when a mobile node performs handover between two autonomous systems (AS)). In this paper, we propose an efficient approach to manage inter-domain handover...
Inter-vehicle communication among great deals of vehicles plays an important role in providing a high level of safety and convenience to drivers. Geographic routing protocol has been identified to be suited as a result of the special nature of vehicular ad hoc networks (VANETs), such as high dynamic mobility and large network size. Although there is considerable functional research about geographic...
In Wireless Mesh Networks (WMNs), users can enjoy the real-time video streaming service anytime and anywhere through the service. Compared to the client/server model, the P2P (Peer-to-peer) approach is more suitable for video streaming applications because of its efficient usage of network resources. However, the multimedia applications are very sensitive to delay time and the performance of packets...
A key challenge of message forwarding in delay tolerant networks (DTNs) is to increase delivery rate and decrease delay and cost. When information for future connectivity is not available, opportunistic routing is preferred in DTNs in which messages are forwarded opportunistic (non-deterministically) to nodes with higher delivery probabilities. Many real objects have non-deterministic but cyclic motions;...
Traffic engineering (TE) has become a challenging task for network management and resources optimization due to traffic uncertainty and to the difficulty to predict traffic variations. To address this uncertainty in a robust and efficient way, two almost antagonist approaches have emerged during the last years: robust routing and dynamic load-balancing. The former copes with traffic uncertainty in...
Recently, erasure coding has become widely used to compensate for the low packet delivery ratio of multi-hop wireless networks. Most existing works assume that the number of redundant erasure-coded packets is unlimited for a message. In this paper, we relax this assumption and integrate the packet quantity into a routing problem in order to achieve a good balance between energy cost and reliability...
The inherent properties of wireless sensor networks (WSN) disqualify most classic methods targeting timeliness guarantees. Assumptions of such methods as well as a restrictive notion of timeliness borrowed from classic real-time systems clash with the indeterminism of realistic scenarios. In this paper, we introduce a generalized notion of timeliness which allows to provide meaningful performance...
Multicast is the ability of a communication network to accept a single message from an application and to deliver copies of the message to multiple recipients at different location. With the development of Internet, multicast is widely applied in all kinds of multimedia real-time application: distributed multimedia systems, collaborative computing, video-conferencing, distance education, etc. In order...
In Ad Hoc network, the multi-hop networks as the characteristics of the dynamic changing of the interconnection topology make the routing very important. In this paper, an optimized scheme of SMR is presented, which allows the SMR having better performance in low-speed environment, especially can decrease the end-to-end delay, and also expands the range. At last, we compared our optimized scheme with...
This paper proposes a distributed energy-efficient routing algorithm for mobile Ad Hoc networks (MANETs). We adopt the cross-layer design paradigm. The distance from the source node to the destination node is estimated based on the received signal strength indication (RSSI) of the packets and is used to adaptively adjust the backoff time of the MAC layer. A distance threshold and a packet count threshold...
In intermittently connected networks, epidemic routing protocols have been widely used as its simplicity and reliability. However, this kind of protocols will make the same message cover most of the nodes in networks which causes a huge waste of network resources. Therefore, this paper proposes a new routing protocol named epidemic routing based on separation time with forwarding tokens constrained...
We analyzed how reliability, defined as the probability of continuing transmissions on link failures, will be affected by inter-domain multi-path and multi-homing routing when the structure in the future Internet changes. The goal of this project is to find properties for the ideal network structure that maximizes the advantage of multi-path and multi-home routing. We focused on how each end-to-end...
This paper presents a transaction-level on-chip communication network model, including routers and links, which can be easily employed in a system-level system-on-chip simulation framework for early functional verification and architecture analysis. The model is capable of providing NoC's latency and throughput information during simulating process and developed in SystemC to achieve high simulation...
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