Search results for "Linear network coding"

showing 3 items of 3 documents

Multi-hop D2D Communications with Network Coding : From A Performance Perspective

2019

Multi-hop device-to-device (D2D) communications play an important role in expanding D2D coverage. In this paper, we study a relay-based and network-coding-assisted (in particular, XOR coding) multi-hop D2D communication system. In the system, toward jointly considering the impact of interference and network traffic conditions on the quality of D2D communications, various channel fading models and traffic models are investigated, and the packet loss probability of D2D links is meticulously computed using these models. With the packet loss probability of D2D links, the general closed-form expressions of end-to-end packet loss probability (E2EPLP) of the system with the presence (or absence) o…

ta213Computer Networks and Communicationsbusiness.industryComputer sciencetraffic modelAerospace Engineeringnetwork codingmatkaviestinverkotCommunications systemperformance evaluationSpread spectrumlangaton tiedonsiirtomobiililaitteetPacket lossLinear network codingAutomotive EngineeringFadingElectrical and Electronic Engineeringbusinessmulti-hop D2D communicationCommunication channelComputer network
researchProduct

On the Benefits of Random Linear Coding for Unicast Applications in Disruption Tolerant Networks

2006

In this paper, we investigate the benefits of using a form of network coding known as Random Linear Coding (RLC) for unicast communications in a mobile Disruption Tolerant Network (DTN) under epidemic routing. Under RLC, DTN nodes store and then forward random linear combinations of packets as they encounter other DTN nodes. We first consider the case where there is a single block of packets propagating in the network and then consider the case where blocks of K packets arrive according to a Poisson arrival process. Our performance metric of interest is the delay until the last packet in a block is delivered. We show that for the single block case, when bandwidth is constrained, applying RL…

business.industryComputer scienceWireless networkNetwork packetNode (networking)Linear network codingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSBandwidth (computing)Packet forwardingUnicastbusinessComputer networkBlock (data storage)2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks
researchProduct

Improving IEEE 802.11 Performance in Chain Topologies through Distributed Polling and Network Coding

2009

Wireless multi-hop networks often rely on the use of IEEE 802.11 technology. Despite of the robustness of the IEEE 802.11 Distributed Coordination Function (DCF) for working in various network scenarios, it has been proven that critical inefficiencies can arise in the case of multi-hop packet forwarding. In this paper, we propose a MAC scheme, based on the virtualization of the Point Coordination Function, optimized for working on chain topologies with bidirectional traffic flows. Our scheme is based on a token-like access mechanism coupled with network coding. The basic idea is the use of multiple Point Coordinators (PCs) along the node chain, which are elected by passing special token fra…

business.industryBidirectional trafficComputer scienceSettore ING-INF/03 - TelecomunicazioniDistributed computingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSPacket forwardingThroughputnetwork codingDistributed coordination functionNetwork topologyWLANToken passingPoint coordination functionIEEE 802.11Linear network codingWireless lanTelecommunications linkComputer Science::Networking and Internet ArchitectureWirelessPollingbusinessComputer network
researchProduct