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Multicast can jointly utilize the network resources when delivering the same content to a set of destinations; hence, it can effectively reduce the consumption of network resources more than individual unicast. The source of a multicast, however, does not need to be in a specific location as long as certain constraints are satisfied. This means the multicast can have uncertain sources, which could...
From the space and time dimension, the FPGA circuit is devised some levels with “computing unit + memory/register” via analyzing the characteristics of the FPGA circuit. Combined with the location importance, the connection degree among the nodes and their own soft error probability, an importance analysis model is proposed. And then the testing points are optimized based on the importance of each...
Due to the constraints of satellite platforms and Inter-Satellite Links (ISL), very limited ISLs can be equipped on the satellites, making the ISLs intermittently available. Meanwhile, the Ground-Satellite Links (GSL) are also intermittent due to the rotation between the constellation and the earth. Intermittent connectivity of both ISLs and GSLs makes the satellite constellation network a typical...
For data center networks (DCNs), it is very important to perform multicast transmission reliably. However, due to packet loss in DCNs, not only the reliability of data transmission should be guaranteed, but also the network throughput should be maintained stably. To this end, in this paper, we design a multicast fat-tree data restoration strategy (MRDC). The advantage of MRDC is that it can haul back...
Space information network is a kind of delay-tolerant networks. Recently, with possible participation of many network nodes, maintaining efficient and dynamic topology becomes crucial. In space information networks, the underlying topology is lack of continuous connectivity, and has the drawbacks of network segmentation, long delay and unreliable connections, which makes the routing design face severe...
In view of the deficiency of existing power line networking algorithms, the paper proposes a novel improved clustering multipath blind routing algorithm, which meets the requirements of survivability and real-time, solves the problem of network reconstruction on link invalidation. Also, solutions to some abnormal situations, such as node joining and exiting are given. Finally, the validity and superiority...
Wireless sensor networks have a wide range of applications including target detection and tracking, environment monitoring, industrial process monitoring, hospital monitoring, and public utility service. A sensor network consists of a large number of sensor nodes and a few sink nodes to collect data from sensor nodes. Sensor nodes and sink nodes form a large scale wireless mesh network in which packets...
In this paper, we present an efficient routing algorithm, Plankton, for Delay/Disruptive Tolerant Network (DTN). Plankton utilizes replica control to reduce overhead and contact probability estimates to improve performance. Plankton has two major features. First, it uses a combination of both short-term bursty contacts and long-term association based statistics for contact prediction. Second, it dynamically...
The RPL routing protocol published in RFC 6550 was designed for efficient and reliable data collection in low-power and lossy networks. Specifically, it constructs a Destination Oriented Directed Acyclic Graph (DODAG) for data forwarding. However, due to the uneven deployment of sensor nodes in large areas, and the heterogeneous traffic patterns in the network, some sensor nodes may have much heavier...
Multicast is an important mechanism in modern wireless networks and has attracted significant efforts to improve its performance with different metrics including throughput, delay, energy efficiency, etc. Traditionally, an ideal loss-free channel model is widely used to facilitate routing protocol design. However, the quality of wireless links would be affected or even jeopardized by many factors...
The data link layer is used to transport the network layer's data from the source to the destination node safely. This paper designed and implemented the data link layer by the WIA-PA specification. It designed 5 events which can be triggered by a timer to implement the superframe, designed a reliable data communication method based on active timeslot table and an link transmitting queue, and achieved...
Exploiting path diversity to enhance communication reliability is a key desired property in Internet. While the existing routing architecture is reluctant to adopt changes, overlay routing has been proposed to circumvent the constraints of native routing by employing intermediary relays. However, the selfish inter-domain relay placement may violate local routing policies at intermediary relays and...
In order to solve the problem of constrained routing algorithm without capability of dealing with failures, this paper proposes a failure recovery method based on multiple mode protection switching including global protection segment protection and local protection. This method quantifies the performance of three protections switching styles as a protection metric, making use of this metric to computer...
Implementing the dynamic couple of searching paths and resource allocation becomes increasingly important in the research of Quality of Service (QoS) routing. In this paper, we formulate the problem of dynamic QoS routing with resource allocation based on Worst-case Fair Weighted Fair Queuing (WF2Q) packet scheduling style. We propose an algorithm using the proved results - the optimal path resource...
It has been widely recognized that the current Internet routing system is facing serious scaling problem. Several efforts argue that the routing scaling problem necessitates architectural changes. In this paper, we propose a scalable routing architecture for future Internet. Our proposal goes along the ideas of inter-domain/intra-domain routing separation and provider/customer networks separation,...
As VLSI design complexity continues to increase, the yield loss due to via failure becomes more and more significant. Redundant via insertion is highly recommended for improving chip yield and reliability. In this paper, we study the redundant via insertion problem in a postrouting stage, where a single via can have at most one redundant via inserted next to it. The goal is to insert as many redundant...
As more and more mission critical services emerge on the Internet, there is a growing demand for the Internet to provide stringent service availability and reliability. More and more domains adopt multi-homed connection to expect increasing reliability. But the de facto inter-domain protocol - BGP spends a long period to converge to another stable state when one of the links of multi-homed domain...
Maintaining connectivity is a key responsibility of any routing system, but successfully carrying it out can be challenging, especially for inter-domain paths. Many measurements indicate the links failures are fairly common in the Internet. During the period of failures, some destination would be unreachable and the corresponding services unavailable. Shrinking the convergence time window to improve...
This short paper presents practical algorithms for mitigating inefficiency in reliability differentiation service based on geographical stateless routing, which has great potential applications in large scale wireless sensor networks (WSN). Based on available algorithm, the paper presents a mathematical formalization to systematic understanding the multipath redundancy problem of WSN. With the information...
In mobile ad hoc networks (MANETs), one of the critical issues consists of the design of routing algorithms that are robust to frequent path disruptions caused by hostspsila mobility. This paper analyzes random walk mobility model, and establishes the relationship between a linkpsilas reliability and current lifetime via a conditional probability model. A path reliable routing algorithm is also developed,...
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