I recently read the rather interesting announcement from NTT DoCoMo where they demonstrated LTE running over the unlicensed 5GHz band. They report a 60% increase in spectral efficiency over IEEE 802.11n Wi-Fi. The article also noticed that LTE-U is now referred to as Licensed-Assisted Access using LTE or LAA-LTE. This caused me to pause, and think about several things.
The comparison between LAA-LTE and Wi-Fi is not (and should not be) about spectral efficiency. Rather it is about several other factors:
A robust network with a diverse client ecosystem (does anybody reading this blog own an IP device without Wi-Fi? How many of those devices contain LTE? How many are Wi-Fi only, without any SIM card?)
The ability to support neutral host deployments (are stadium owners willing to deploy LAA-LTE if it only supports one operator?)
The ability to co-exist in a multi-operator environment (how would LAA-LTE operate in dense environments when it has to co-exist with LAA-LTE APs from other operators?)
The ability to co-exist in a multi-technology environment (would if it adversely affects the existing and extensive deployments of Wi-Fi infrastructure?)
A number of Mobile operators have agreements with Wi-Fi providers for offloading cellular traffic (how does one enable such a scenario with LAA-LTE?)
And if you really want to talk about speeds and feeds, it’s interesting that the test was done against 802.11n, when 802.11ac is now widely available, providing speeds that exceed LTE-Advanced speeds of 1 Gbps (IEEE 802.11 ac Wave 1 provides maximum speed of 1.3 Gbps and Wave 2 provides maximum speed of 3.5 Gbps). It’s also important to note that LAA-LTE has not been defined yet and so it’s very likely that the LAA-LTE implementation tested here does not have the politeness mechanisms required in certain regulatory domains like Europe. These mechanisms allow fair usage of the unlicensed spectrum by allowing other users an opportunity to transmit and share the spectrum. These mechanisms already integrated into Wi-Fi will add additional overhead to LAA-LTE that will reduce its spectral efficiency, a factor that needs to be taken into account in any comparison.
Many network engineers recall the iOS7 update on September 18, 2013 as one of the most historic download days of their network’s history. All the more reason for us in the wireless world who anxiously anticipated the September 17 release of iOS8.
We asked a few of our customers to monitor the effect of the software release on their networks and the results for the first two days are in. Those in the education and healthcare space in particular are filled with early adopters of WiFi technology and devices, and eager to get their hands on the latest updates.
Joe Rogers, Associate Network Director at the University of South Florida shared this picture with us from 1pm September 17th, showing 1 Gbps more traffic than he would normally see at this time of day:
Another customer, Greg Sawyer, Manager of Infrastructure Services, shared this picture of the iOS8 effect on his network at the UNSW Australia.
He noted that his experience handling the release this year felt smoother than last year, despite the new peak internet download of 4.65 Gbps and 21Tb downloaded for the day! Not too surprising when considering that there were 27,000 concurrent connections on the wireless network and approximately 60% of those being Apple devices.
How should organizations be considering and handling these network spikes? I sat down with Cisco technical leaders Matt MacPherson and Chris Spain (@Spain_Chris) to get some insight on the effect of big updates like iOS8 on the wireless network. Here are some of the highlights of what we discussed:
The World We Live In
The truth is, more and more services are being moved to the cloud—a cloud that will push updates to millions & in the future billions of users and devices on our networks. Read More »
#CiscoChampion Radio is a podcast series by Cisco Champions as technologists. Today we’re talking with Cisco Distinguished Services Engineer Joe Clarke, about Cisco Prime Infrastructure. Lauren Friedman (@Lauren) moderates and Rick Vanover and Stewart Goumans are this week’s Cisco Champion guest hosts.
Highlights What is Cisco Prime?
What is Cisco Prime Infrastructure?
Why are companies using it? How mobility drives need for Cisco Prime Infrastructure
Wireless Management and Cisco Prime Infrastructure Use cases for Cisco Prime Infrastructure
The appetite for the latest new products and services is growing exponentially driven by the 24 hour, on demand, social media driven, next day delivery expecting, ‘selfie’ posing with the new shiny object, hyper informed consumer. Satisfying the demand for this fast-paced consumer cycle requires manufacturers to move rapidly to stay ahead of competitors and consumer tastes. They must bring interesting and exciting new products to market in a timely fashion, whether they are first to market or responding to a competitor’s new product offerings.
Two specific trends are emerging and transforming how the industry develops, manufactures and meets the demands of the new on demand consumer driving market - crowd sourcing and 3D printing.
Manufacturing Game Changers: Crowdsourcing and 3D Printing
Crowdsourcing is not a new development model. In fact, the open-source model gave us the Linux operating system and the Apache Web server over 20 years ago. But there is one very distinct difference when applying crowdsourcing methodology to a manufacturing process, as opposed to software development, and that is raw material. This is where 3D printing technology is rapidly maturing driving orders of magnitude efficiencies and cost savings into the value chain.
A Printed Car
In fact, a start-up called Local Motors is on the cutting edge of combining crowdsourcing and 3D printing to revolutionize the automobile industry. In a process that Local Motors calls “co-creation,” — also known as “crowdsourcing” — the software allows enthusiasts to post a design for a part that other users in a worldwide community can call up on a browser, see in 3D, take measurements from, and comment on, thus providing a new model and methodology for innovation. Local Motors then leverage 3D printing technology to deploy “microfactories”
Can crowdsourcing and 3D printing produce an electric car?