TF-Mobility: Qos for wireless environments Enrique de la Hoz de la - PowerPoint PPT Presentation

Introduction Network under study Quality of Service Proposal Conclusions TF-Mobility: Qos for wireless environments Enrique de la Hoz de la Hoz enrique@aut.uah.es Universidad de Alcal´ a de Henares 28 de septiembre de 2007 logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Index Introduction 1 Network under study 2 Quality of Service Proposal 3 Conclusions 4 logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Technical specifications set by University logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Technical specifications set by University Provide Wireless Internet Access to a wide open area of UAH external campus: the hall of residence logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Technical specifications set by University Provide Wireless Internet Access to a wide open area of UAH external campus: the hall of residence Restricted access to web surfing. Need to guarantee a minimal BW of 256kbps per user logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Figura: Satellite view of CRUSA logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Complex deployment of a wired infrastructure. Expensive and annoying for the users logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Environment Complex deployment of a wired infrastructure. Expensive and annoying for the users So, decided to use wireless-802.11 based communications: 802.11a,802,11b,802.11g logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Premises Development of a radio system to cover the hole area logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Index Quality of Service Proposal Introduction Conclusions Premises Development of a radio system to cover the hole area Development of an open-source platform to to provide the access required logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Network diagram Figura: Deployed Network logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Access points 22 Linksys access points working in router mode logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Access points 22 Linksys access points working in router mode Every AP linked using ethernet or IEEE802.11a in places with difficult physical access logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Access points 22 Linksys access points working in router mode Every AP linked using ethernet or IEEE802.11a in places with difficult physical access Using Linux dd-wrt.vv prefinal 5 and distributing APs in channels 1, 6 and 11 logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Access points 22 Linksys access points working in router mode Every AP linked using ethernet or IEEE802.11a in places with difficult physical access Using Linux dd-wrt.vv prefinal 5 and distributing APs in channels 1, 6 and 11 At least, there will be two APs reachable by every user in the studied locations studied logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Network architecture Quality of Service Proposal Conclusions Access points distribution logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions Quality of service basis Intensive use of bandwidth: massive downloads, download managers, voIP calls, video calls logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions Quality of service basis Intensive use of bandwidth: massive downloads, download managers, voIP calls, video calls Leading to an unfair distribution of bandwidth logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions Quality of service basis Intensive use of bandwidth: massive downloads, download managers, voIP calls, video calls Leading to an unfair distribution of bandwidth We were not meetig the established requirements logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS proposal Priorizing control and management traffic: SNMP, ICMP, SSH and other control types logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS proposal Priorizing control and management traffic: SNMP, ICMP, SSH and other control types Detecting traffic types logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS proposal Priorizing control and management traffic: SNMP, ICMP, SSH and other control types Detecting traffic types Distributing bandwidth to meet requirements logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS design Not trying to offer wireless QoS directly logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS design Not trying to offer wireless QoS directly Not considering 802.11e. Our linksys ap were not capable logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS design Not trying to offer wireless QoS directly Not considering 802.11e. Our linksys ap were not capable Instead of that, we tried to shape user traffic at Internet link using well-known traffic control linux tools and traffic marking capablilities of netfilter logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS design Not trying to offer wireless QoS directly Not considering 802.11e. Our linksys ap were not capable Instead of that, we tried to shape user traffic at Internet link using well-known traffic control linux tools and traffic marking capablilities of netfilter Practical linux-based solution logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions Proposal Figura: Schema logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS Linux kernel queueing support is used. We develop a proper queueing schema employing tc logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments

Introduction Network under study Quality of Service Proposal Conclusions QoS Linux kernel queueing support is used. We develop a proper queueing schema employing tc Mark packets using netfilter mark/classify capabilities logo Enrique de la Hoz de la Hoz enrique@aut.uah.es TF-Mobility: Qos for wireless environments