Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Jouni Karvo"'
Publikováno v:
Performance Evaluation. 63:395-422
We develop methods for quantifying the gain of using multicast or a combination of broadcast and unicast for transmitting popular content in telecommunication networks. The gain is evaluated in a single link, such as the radio interface of a cellular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b65870a3ffa4ac31c9fe5be93f97391
https://doi.org/10.1016/j.peva.2005.03.003
https://doi.org/10.1016/j.peva.2005.03.003
Publikováno v:
Telecommunication Systems. 16:467-481
Multicast connections have a bandwidth saving nature. This means that a multicast connection --- in taking the form of a tree with streams merging at the nodes --- requires much less capacity from the network links than a bunch of separate point-to-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b0501868018949e47f8629ebedbce65
https://doi.org/10.1023/a:1016631431617
https://doi.org/10.1023/a:1016631431617
Publikováno v:
ICT
We analyze the fairness of bandwidth sharing between competing flows when the flows use different packet sizes. For systems where router buffers are defined in packets, we notice that larger packets get preferential treatment. Specifically, in networ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::675f8b3181f7cf0603f8f7e8c32c7960
https://doi.org/10.1109/ictel.2009.5158653
https://doi.org/10.1109/ictel.2009.5158653
Autor:
Jörg Ott, Jouni Karvo
Publikováno v:
Challenged Networks
Numerous routing protocols have been proposed for Delay Tolerant Networking. One class of routing protocols aims at optimizing the delivery performance by using knowledge of previous encounters for forecasting the future contacts to determine suitabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::717846c80fc09d14e3500970dd8257eb
https://doi.org/10.1145/1409985.1409993
https://doi.org/10.1145/1409985.1409993
Publikováno v:
MobilityModels
movement models, such as Random Waypoint, do not capture reliably the properties of movement in the real life scenarios. We present and analyse a movement model for delay-tolerant network simulations that is able to produce inter-contact time and con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e7f65ee9edc89d7e370fbf4367ea382
https://doi.org/10.1145/1374688.1374695
https://doi.org/10.1145/1374688.1374695
Publikováno v:
Challenged Networks
The communication paradigms for delay-tolerant networking have been modeled after email. Supporting email over DTNs in a backwards compatible manner in a heterogeneous environment has yet to be fully defined. In this paper, we present a set of conven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad4c1038021cfdd27dccf97a5fd03762
https://doi.org/10.1145/1287791.1287811
https://doi.org/10.1145/1287791.1287811
Using WLAN networks in enterprises has become a popular method for providing connectivity. We present the security threats of WLAN networks, and the basic mechanisms for protecting the network. We also give some advice on avoiding the threats.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01a16f0cf991b28b62d82fb5f25179ea
https://doi.org/10.4018/978-1-59904-090-5.ch004
https://doi.org/10.4018/978-1-59904-090-5.ch004
Publikováno v:
Challenges in Ad Hoc Networking ISBN: 9780387311715
Med-Hoc-Net
Med-Hoc-Net
Ad hoc networks are by nature constructed "automatically", by the nodes adapting to the neighboring nodes and building up a network. In this context, the network topology is random, and in particular, no connectivity is guaranteed: the nodes may be s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b6cd9d6d5a9dea4116b205663a93a33
https://doi.org/10.1007/0-387-31173-4_19
https://doi.org/10.1007/0-387-31173-4_19
Publikováno v:
Workshop on High Performance Switching and Routing, Merging Optical and IP Technologie.
We present two new algorithms for calculating call blocking probabilities for multi-layer multicast streams with the assumption that blocked calls are lost. Users may join and leave the multicast connections freely, thus creating dynamic multicast tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e38d23c64bc9720afbe84bf7dad1de8
https://doi.org/10.1109/hpsr.2002.1024248
https://doi.org/10.1109/hpsr.2002.1024248
Publikováno v:
INFOCOM
We consider the problem of estimating blocking probabilities in a multicast loss system via simulation, applying the static Monte Carlo method with importance sampling. An approach is introduced where the original estimation problem is first decompos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86057f455dcfd08040b624eeb6b0219f
https://doi.org/10.1109/infcom.2001.916726
https://doi.org/10.1109/infcom.2001.916726