Wireless IP, The Killer Application !?

My website and thesis captures the essential elements in the convergence path of wireless networks and Internet protocols resulting in the new paradigm of "Wireless IP." It covers all the important 1G/2G cellular technologies that I have seen in the past decade, along with 3G and 4G, Wireless Local Area Network (WLAN) technologies,including modifications required in protocols, architectures, and framework in virtually every area such as QoS, security, mobility, and so on.

The thesis can be useful for anyone who is interested in the convergence of the wireless and IP networks and for them who need to understand how packet data services and IP work in the wireless world. Furthermore, the thesis represents my views and opinions , based on my technical understanding and experience in these areas

Because the increase of higher system capacities and data rates provided by latest and proposed wireless network technologies, and their closer integration with the Internet enabled by the IP technologies used in these wireless networks are enabling many new ways for people to communicate.
Also people on moving vehicles (e.g. cars, trains, boats and airplanes) may access the Internet or their enterprise networks the same way as when they are at their offices or homes. They may be able to surf the Internet, access their corporate networks, download games from the network, play games with remote users, obtain tour guidance information, obtain real-time traffic and route conditions information.

Wireless networks are evolving into wireless IP networks to overcome the limitations of traditional circuit-switched wireless networks. Wireless IP networks are more suitable for supporting the rapidly growing mobile data and multimedia applications.
IP technologies (such as Mobile IP) are the most promising solutions available today for supporting data and multimedia applications over wireless networks. IP-based wireless networks will bring the globally successful Internet service into wireless networks. The mobile or wireless Internet will be an extension to the current Internet.

Advanced mobile data and multimedia applications such as; MMS, play games in real time with remote users, Voice over wireless (VoIP calls) and broadcasting of audio and video advertisements to mobile phone users such as: advertiser supported phone calls, Wireless IP-enabled radio and watch TV, will grow very fast. New IP broadcasting techniques such as DVB-H (Digital Video Broadcasting for Handhelds), will make it possible to bring video broadcasting services to handheld receivers.

In particular, the growth of advanced mobile data and multimedia applications such as Voice-over-IP (VoIP) help increase multimedia traffic over the wireless networks significantly. Thus, Wireless IP can also be a killer sometimes. Therefore future Wireless IP networks can only be able to service those mobile data and multimedia applications without congestions in the Wireless network, if those Wireless IP networks are ready for it. In other words, "those networks need to be controlled (e.g. by QoS parameters or other specific protocols) end must have enough bandwidth to support all this types of services. Wireless networks and the IP technologies within those networks have to be reviewed and evolved constantly.

Remark these words:
The traffic on broadband wireless networks will be increasingly IP

Archive for controller-based


Aruba Networks | controllerless managed by Airwave or controller based in the campus

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On Tuesday, February 14, 2013 Wireless Field Day#4 delegates were invited by Aruba Networks to visit their company on 1344 Crossman Avenue, Sunnyvale, CA for a 4 hour timeslot presentation.

At 12am we had a quick chat with Keerti, Aruba co-Founder and Pradeep Iyer and Partha Narasimhan, Aruba Fellows followed by Aruba’s management tooling AirWave

AirWave provides visibility into everything that affects service quality – Wi-Fi coverage, access points (APs), controllers and the wired network. It also offers tools to improve operations and manage RF security, including user location and mapping, real-time monitoring, proactive alerts, historical reporting, and efficient troubleshooting.
Designed for comprehensive visibility across the entire access network, AirWave supports multiple generations of products from leading vendors – from fat APs to thin, and from legacy 802.11b gear to the latest 802.11n mobile devices.

Some hand on sessions were presented by Rob Gin and Sujatha Mandava.

Controller based and Controller less WiFi:
Presented by Ozer Dondurmacioglu
How to select the best archtecture?
* Evolution of the Architectures…
Autonomous APs ->

1st Generation: 128 APs, 2,048 devices
2nd Generation: 512 APs, 8,064 devices
3rd Generation: approx. 2000 APs, 32,700 devices

Autonomous APs ->

Similar CPU & memory to 1st Generation wireless controllers

Aruba believes and supports both options..
Controller based solution: Aruba OS (10y) version 6.2, upcoming 6.3
Controllerless solution: Instant OS version 3.2, upcoming 3.3

Data plane: distributed on AP’s
Management plane: synchronized AP’s, survivable

One instant cluster op AP’s among a single management VLAN (so 10 VLANs -> 10 instant clusters off AP’s)

L3 roaming between them
No limitations

One management VLAN for the AP’s & one client VLAN for devices, still the client VLAN needs to be one

VLAN for one instant cluster

Controllerless network integration: (Branche/Retail)

..if one of the AP’s goes down, an other AP assumes the role of cluster management and talking to the Airwave
-> distributed management plane across the AP’s

Dynamic or static management AP selection on IAP

Edge VLAN’s for users and AP’s on IAP
Access Switch Distribution/Core (DHCP/DNS)
Management server usually optional but required by some vendors Distribution/Core
Numbers of AP’s and Wifi users per controllers group depends on VLAN sizing->->

Controller network integration:

AP Groups
Use existing edge VLAN’s for AP’s on the Access Switch Distribution/Core
Centralized VLANs and DHCP for Wifi users in one location -> Mobility Controller (DHCP/DNS)
Mobility Controller WLAN wide Broadcast and Multicast controls
Number of APs and Wifi users per Mobility controller depending on model->->->

Aruba’s vision: Cisco Flex Architecture (one controller managing multiple Remote APs) not the best idea, -> big list price difference.. (Cisco Flex vs Aruba Instant)
Aruba’s recommendation:

controllerless managed by Airwave or controller based in the campus

…not recommend: a lot of APs in the branche managed by some controller appliance in the datacenter.(roaming failures,WAN failure..)
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