Feyza Keceli, Inanc Inan, and Ender Ayanoglu
The authors separate the TCP downlink acks in a different queue. By wisely scheduling those acks, they obtain fairness among the uplink flows.
Thursday, June 28, 2007
Saturation Throughput Analysis of the 802.11e Enhanced Distributed Channel Access Function
Inanc Inan, Feycza Keceli, and Ender Ayanoglu
Again, an extended Markov chain allows the inclusion of the AIFS and CWmin in the throughput calculation. It makes emphasis in that in the slots immediatly after a busy slot there are different collision probabilities, depending on the AIFS configurations of the stations
Again, an extended Markov chain allows the inclusion of the AIFS and CWmin in the throughput calculation. It makes emphasis in that in the slots immediatly after a busy slot there are different collision probabilities, depending on the AIFS configurations of the stations
Wednesday, June 27, 2007
conferences for woman (wireless open metropolitan access networks)
LANMAN -over
WMASH -dead
WCNC - Las Vegas, submission due to September
MWCN - over
INFOCOM . deadline July 2, rejection november 12
ACCESSNETS - over
QoSIP 2008 - over
QSHINE Over
ISWCS Over
MOBIQUITOUS Over
WiNTECH Over
IEEE LCN
The list:
http://wireless.cs.tku.edu.tw/~seanwang/html/research.html
WMASH -dead
WCNC - Las Vegas, submission due to September
MWCN - over
INFOCOM . deadline July 2, rejection november 12
ACCESSNETS - over
QoSIP 2008 - over
QSHINE Over
ISWCS Over
MOBIQUITOUS Over
WiNTECH Over
IEEE LCN
The list:
http://wireless.cs.tku.edu.tw/~seanwang/html/research.html
Monday, June 25, 2007
Linux for suits: Migrating a mentality
Doc Searls
The author defends that network should be treated as a facility, just as electricity, to support the rest of the economy.
The author defends that network should be treated as a facility, just as electricity, to support the rest of the economy.
open access networks
@article{edvardsen:oan,
title={{Open access networks}},
author={Edvardsen, E. and Eskedal, T.G. and Arnes, A.},
journal={Converged Networking}
}
A completely different deffinition of the OAN.
title={{Open access networks}},
author={Edvardsen, E. and Eskedal, T.G. and Arnes, A.},
journal={Converged Networking}
}
A completely different deffinition of the OAN.
Towards an Economic Framework for Network Neutrality Regulation
Barbara van Schewick
A forty-page analysis of the network neutrality discussion. The network providers have incentives to discriminate, even in the case that they do not hold a monopoly position. This discrimination would have disastrous impact on the innovation in the application level and therefore network neutrality should be enforced by regulators.
A forty-page analysis of the network neutrality discussion. The network providers have incentives to discriminate, even in the case that they do not hold a monopoly position. This discrimination would have disastrous impact on the innovation in the application level and therefore network neutrality should be enforced by regulators.
Wednesday, June 20, 2007
100+ VoIP Calls on 802.11b: The Power of Combining Voice Frame Aggregation and Uplink-Downlink Bandwidth Control in Wireless LANs
Sangki Yun, Hyogon Kim, Heejo Lee, and Inhye Kang
Very interesting... so many things to summarize! Deals with uplink/downlink unfairness aspects, packet aggregation at the MAC level, E-model.
The key idea is that the channel access is the main overhead in VoIPoWLAN. Thus aggregating packets belonging to the same call at the mac level drastycally boosts the performance.
Very interesting... so many things to summarize! Deals with uplink/downlink unfairness aspects, packet aggregation at the MAC level, E-model.
The key idea is that the channel access is the main overhead in VoIPoWLAN. Thus aggregating packets belonging to the same call at the mac level drastycally boosts the performance.
Tuesday, June 19, 2007
Performance Analysis of the WLAN-First Scheme in Cellular WLAN Interworking
Song, Jiang, Zhuang
I've been studying IMS-WLAN interworking and there is people in the group focusing on CAC, VoIP QoS in WLAN, and capacity studies in heterogeneous (voice/data) scenarios. Thus this paper promises to bridge this topics.
The different behaviour/capacity of cell and wlan, and the different behaviour of users in both environments (assumed outdoor and indoor) makes it difficult to decide how to assign user to one or the other technology. Since the performance of VoIP on wlan is poor, it seems natural to as many data sessions as possible to the wlan.
I've been studying IMS-WLAN interworking and there is people in the group focusing on CAC, VoIP QoS in WLAN, and capacity studies in heterogeneous (voice/data) scenarios. Thus this paper promises to bridge this topics.
The different behaviour/capacity of cell and wlan, and the different behaviour of users in both environments (assumed outdoor and indoor) makes it difficult to decide how to assign user to one or the other technology. Since the performance of VoIP on wlan is poor, it seems natural to as many data sessions as possible to the wlan.
Monday, June 18, 2007
wlan sharing - alternatives
This are different alternatives to share wlan.
- Neutral Operator (kth, barcelona...)
- Tunneling (Urbino)
- IMS-like (involving tunnels)
- Radius relay (Eduroam, WISPr)
- Wilmagate (Like Radius relay, without radius)
- Multiple ssid, multiple wlan
- WLAN differentiation using capwap
Maybe it would be interesting to review all the existing alternatives and compare thems in terms of
- convenince
- security
- matureness
- scalability
- Neutral Operator (kth, barcelona...)
- Tunneling (Urbino)
- IMS-like (involving tunnels)
- Radius relay (Eduroam, WISPr)
- Wilmagate (Like Radius relay, without radius)
- Multiple ssid, multiple wlan
- WLAN differentiation using capwap
Maybe it would be interesting to review all the existing alternatives and compare thems in terms of
- convenince
- security
- matureness
- scalability
3GPP TS 23.234
Wireless Local Area Network interworking system description
Describes how a WLAN can be used to access 3gpp ims ps domain. I am specially interested in policy/QoS aspects.
Describes how a WLAN can be used to access 3gpp ims ps domain. I am specially interested in policy/QoS aspects.
Wednesday, June 13, 2007
MAC Access Delay of IEEE 802.11 DCF
Taka Sakurai, Hai L. Vu
Even though 802.11 dcf has been extensively studied, it seem that there is still room for more research. In this case, building up previous work by Kwak Song and Miller, the access delay is calculated, obtaining more accurate results than other authors.
Even though 802.11 dcf has been extensively studied, it seem that there is still room for more research. In this case, building up previous work by Kwak Song and Miller, the access delay is calculated, obtaining more accurate results than other authors.
Tuesday, June 5, 2007
Fairness Provision in the IEEE 802.11e Infrastructure Basic Service Set
Inanc Inan, Feyza Keceli, and Ender Ayanoglu
Closely related to our current work, they actually stepped forward. However, it's reconforting to see that other people focus on the same research, it makes you think that it's not completely worthless.
The authors highlight the fact that the default values for the EDCA are suboptimum. Moreover, no fixed set of parameters can fight the uplink/downlink fairness. They provide an analytical model and an extensive set of simulated scenarios involving TCP and UDP traffic.
Closely related to our current work, they actually stepped forward. However, it's reconforting to see that other people focus on the same research, it makes you think that it's not completely worthless.
The authors highlight the fact that the default values for the EDCA are suboptimum. Moreover, no fixed set of parameters can fight the uplink/downlink fairness. They provide an analytical model and an extensive set of simulated scenarios involving TCP and UDP traffic.
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