Cisco Blogs

Cisco Blog > Mobility

Cisco Battery Control

We are all witnessing the continued proliferation of mobile devices on our networks. This device explosion has led to an increase in wireless service discovery and announcements protocols like Bonjour, DLNA (Digital Living Network Alliance), and UPnP  (Universal Plug and Play). For example, Bonjour locates devices such as printers, other computers, and the services that those devices offer on a local network using multicast Domain Name System (mDNS) service records. Bonjour is built-in with Apple’s operating system including iOS and available on Windows as a common plugin while DLNA and UPnP are built in with Android and Windows operating system respectively.

The usage of these protocols comes with a big price: an increase in Multicast traffic because they are all inherently sent as a broadcast transmissions in Wi-Fi networks.

But why is an increase in Multicast traffic bad for users?

The answer is simple: multicast traffic increases mobile device battery consumption by forcing the device host processor to wake-up more often than required.

Have you ever wondered a drop in battery percentage while your mobile device is sitting idle of hours in your pocket? If yes, then you are probably on a network with a high percentage of multicast traffic emanating from every mobile device that is part of it.

So how can we save battery drop taxes on our mobile device without losing the ability to support these protocols? Read More »

Tags: , , , ,

Guest Blog: Migrating High Density University Networks to 802.11ac

Editor’s Note: This is a guest post by Joe Rogers, Associate Director of Network Engineering for the University of South Florida (USF). Hear Joe speak about his experiences with next-generation wireless in high density environments on next Tuesday’s webinar:  “Migrating Enterprise Networks to 802.11ac” at 10am PST (Dec 17) (Register here)

Joe RogersJoe Rogers is the Associate Director of Network Engineering for the University of South Florida.  He is a graduate of USF’s Computer Science and Engineering program and has worked as a network engineer at USF for the past 20 years.  He is currently responsible for all aspects of USF’s network which provides connectivity to over 100k devices across three campuses.  He’s held a CCIE routing and switching certification since 1999.  When not working, he’s an avid mountain biker (if you can call it “mountain” biking when you live in Florida).


Universities face some of the most complex design challenges in wireless networking.  Our user population is highly mobile, bandwidth-hungry, and often simultaneously using at least two wireless devices in rooms with hundreds of their classmates.  The wireless network isn’t simply a convenience to them.  It’s critical to their educational success as many of the students are taking tests or working on assignments across the network.

At the University of South Florida, we support over 20,000 concurrent wireless users on our network of over 4,000 access points.  We have more than 90,000 unique devices registered this semester.  Our biggest challenge is designing the wireless network for the device densities in our large classrooms and popular study areas.  In these locations, we often have a thousand devices in a few hundred square feet of space.

We heavily rely on band select to place as many devices as possible on 5Ghz where more channels are available.  Unfortunately many devices such as older tablets and smart phones simply don’t have an 802.11a/n radio.  So we must carefully RF engineer the environment with smaller cells to provide the necessary coverage density. Read More »

Tags: , , , , , , , , , , , , , , , , , , , , ,

Congratulations to 2013 IEEE-SA International Award Recipient Andrew Myles

ieeeEarlier this week, the IEEE Standards Association (IEEE-SA) announced the winners of the 2013 IEEE-SA Awards to honor standards development contributions. We are pleased to announce that Andrew Myles, Engineering Technical Lead at Cisco has been awarded the IEEE 802 SA International award for his extraordinary contribution to establishing IEEE-SA as a world-class leader in standardization.  Andrew has long been involved in IEEE-SA and led a long term initiative (2005-2013) in IEEE 802 to defend and promote IEEE 802 standards globally.

We want to congratulate Andrew on this tremendous recognition. The work of Andrew and others  contributors develop and promote high quality, efficient and effective IEEE standards.  This enables the Internet and the supporting network components to be the premiere platforms for innovation and borderless commerce they are today. These standards in turn are reflected in our products and solutions for our customers.  As we develop technological innovation for our customers, in parallel, we continue to drive global standards deployment. The results are the best innovative solutions that can solve and better our customers’ network environments. Read More »

Tags: , , , , , , , , ,

Summary: Gathering Frontline Insights on Mobility Innovation

IT leaders today are faced with solving challenges on a daily basis. They must determine solutions that create more efficient businesses, develop innovative ways to reach customers, and all the while positively impacting the bottom line. What’s helping drive these solutions and transformations in business?

The answer is mobility. Leaders are leveraging mobility to improve business – from personalized experiences to new operating strategies. This is what is keeping business ahead of the curve.

Our latest edition of Mobilize offers insights from other C-level executives that can help you realize the need for innovation to keep your business at the top of its game. In addition, you can gain insights from industry experts across many industries, such as:

  • The Mobile Marketplace
  • Security
  • Education
  • Healthcare

Learn more from your peers in Mobilize and help your business face the challenges of innovation and keep it moving forward toward success.

Read the full article:  Gathering Frontline Insights on Mobility Innovation.

Tags: , , , , , , ,

Deep-Dive Techwise Technical Workshop: Cisco Connected Mobile Experiences

Next Thursday you don’t want to miss a live technical webcast with Q&A on the hot topic of Wi-Fi location-based services. Join Techwise tech legend Jimmy Ray Purser and technical marketing engineer lead Darryl Sladden for a deep technical discussion covering the ins and outs of Cisco’s Mobility Services Engine – the intelligence engine in the Cisco Wi-Fi network that enables Cisco Connected Mobile Experiences functionality.

You’ll get a full, hands-on view of four pieces of the solution and see how it all ties into your Wi-Fi network:

  • Location detection – how Cisco’s Wi-Fi infrastructure detects mobile devices and calculates their location
  • Analytics – how the MSE aggregates and reports Wi-Fi location data and trends to administrators and operations leads so that they can better understand guest behavior
  • APIs – how Cisco’s Mobility Services APIs provide application developers rich, contextual information they can use to create a variety of internally and externally-facing apps
  • Maps – a use case of how Cisco uses it’s own Wi-Fi location-based services inside the organization to increase efficiency and employees get to where they need to go

This is an in-depth session you won’t want to miss. Register now and mark your calendars for December 12!

Tags: , , , , , , , , , , , , , ,