1. Plan

A successful WiFi deployment starts with a detailed plan phase.

This phase begins with gathering initial specifications such as WiFi coverage, number of clients, types of devices and defining critical business applications.

Services available in the "Plan Phase" are WiFi consultancy, network and WiFi surveys.

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2. Design

Combining the initial customer specification and information gathered during planning we can start the consultative detailed design phase.

Coverage, capacity, applications, security are just some of the key elements taken into consideration for our designs while capturing the future aspirations of the network.

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3. Integrate

Experience is the key element to success when installing and integrating wireless networks and with nearly 15 years’ experience there isn't a lesson we haven’t learnt.

Our engineers are extensively trained in physical installations, working at height, health and safety and they have active involvement in continually improving our processes. We have performed installations across Europe in the most complex of environments from manufacturing plants, warehousing, corporate offices, high streets and shopping malls.

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4. Optimise

Validate the installed WiFi network against specifications and refine configurations for optimum performance.

Optimising ensures what was detailed in the planning and design phases have been delivered on. Taking the results from a validation survey and fine tuning adjustment as required.

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5. Maintain

Upon successful project completion it is time to maintain.

Maintenance ensures the ongoing performance and support required by networks. Maintenance services are tailored to each specific network and customer need.

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Roaming with Ruckus

Wireless roaming can be difficult to get right. Wireless voice handsets are extremely sensitive to delays and jitter. When roaming within a wireless network, calls can be disrupted or dropped altogether. These problems are usually caused by different subnets on a network. When roaming between access points on different subnets a client device will need to re-associate, re-authenticate and obtain a new IP address. This whole process causes traffic delays and VOIP calls suffer.

Ruckus solve the problem in 2 ways;-

WLAN Tunnelling - LWAPP - based (LightWeight Access Point Protocol)
802.1X PMK Caching

WLAN Tunnelling

WLAN tunnelling cuts out inter subnet roaming by creating a layer 2 WLAN that directs VOIP clients directly back to the controller. The VOIP client can now keep the IP address as it roams from an access point to an access point within a layer 3 WLAN.

802.1X PMK Caching

802.1X EAP enabled clients have to authenticate when moving from one access point to another, which is usually handled by a Radius Server in a remote location. This process can cause delays and VOIP call disruptions. Ruckus gets around this problem by caching Pairwise Master Keys (PMK) to reduce or eliminate the delay caused by a re-authentication process.

The process starts with the first authentication with the remote radius server. A PMK is then cached by the client and the controller and creates PMK ID which includes the AP MAC address. When the VOIP client roams away from the AP and then back again and performs a handshake with the Zone Director controller, cutting out the re-authentication with the Radius server.

PMK's can be shared with neighbouring AP's by the controller and creates new PMK ID's with the AP MAC address of new AP's and sends them back to the controller. When roaming to these new access points, the PMK matches the PMK ID of the AP and performs a handshake with the controller. Disruptions are eliminated, and seamless roaming is achieved. This process is called opportunistic PMK caching. iscalledopportunistic oppOpportunistcvopportunistic PMK caching.

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Ruckus Networks

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WiFi Project Lifecycle

1. Plan

2. Design

3. Integrate

4. Optimise

5. Maintain

Roaming with Ruckus

WLAN Tunnelling

802.1X PMK Caching

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