South Island School in Hong Kong is made up of students from around the world with 1,400 students from over 35 countries. One value that sets the school apart is its commitment to using technology in the classroom. For instance, all students have a laptop that they use to access e-books, watch educational videos, and complete homework assignments. Some exams are even taken digitally.
With wireless devices used daily by every student and faculty member, a stable network connection is almost as important as pencil and paper in classrooms. South Island School’s existing Cisco network had reached end of life, and the school needed to refresh the infrastructure with a network that could meet bandwidth needs for years to come.
“We looked at other vendors, but we were extremely impressed with how the existing Cisco equipment performed over the years,” says Victor Alamo, ICT manager at South Island Schools.
“By upgrading to the latest Cisco access points and switches, we’d have an infrastructure that would keep up with our needs.”
South Island Schools updated their network around the Cisco Aironet Access Points which supported the latest Wi-Fi standard, 802.11ac. This along with Centralized management with support for converged wired and wireless networks allowed South Island Schools to keep their students and teachers connected with reliable and fast service.
These changes resulted in stable wireless connections for thousands of wireless devices which enhanced classroom work with video, applications, and sharing providing a better user experience for both students, teachers and administrators.
For more information, please visit the South Island School Wireless Case Study Page
Tags: 802.11ac, Cisco Aironet Access Points, Cisco Mobility, South Island School in Hong Kong, wi-fi
Cisco Systems is announcing a new set of features that enhance its HDX (High Density Experience) suite. This blog is the first in a series that explains the new features that comprise the enhancements to HDX.
Every advancement in Wi-Fi technology comes with corresponding complexities and tradeoffs. You just don’t get something for nothing.
For example, much of the speed improvements in the evolution from 11b to 11g/a to 11n to 11ac are achieved by simply doubling the RF channel width. Increasing channel width from 20 MHz to 40 MHz effectively enables doubling “over the air” speed. Increasing channel width from 40 MHz to 80 MHz doubles that speed again.
Of course, wider channels are more susceptible to interference (since a wider channel can “hear” more). Furthermore, with wider channels, the number of available so called “non-overlapping” channels decreases making mutual interference an increasing problem. Being able to send data over the air faster is very important, but if the devices in your WLAN are waiting more often to send data because the wider channel is more likely to be busy, then disappointment and unrealized expectations will occur. Keep in mind that because “air is shared” for Wi-Fi that it uses a “listen before talk” protocol.
Also, in a real world WLAN, it is highly unlikely to have homogeneous device types. The client mix will include legacy devices that simply can’t operate at 80 MHz (or 40 MHz). This means that spectrum could be wasted if the network is configured for a greater channel width than most of its devices can handle. This has far more consequences at 5 GHz than at 2.4 GHz since 40 MHz channels are unlikely to be usable at 2.4 GHz and 80 MHz channels cannot be used at 2.4 GHz.
Interestingly, 802.11ac does include a feature called RTS/CTS with bandwidth indication that is intended to address dynamic channel width (read more about this in “802.11ac: The Fifth Generation of Wi-Fi” section 2.3.4). The challenge is that this feature is not often used and cannot be used by either 11a or 11n clients.
Last, but far from least, no two wireless networks are the same – every wireless network is different. Even parts of the same wireless network will be different. Thus, there really is no “one size fits all” static configuration that helps offer optimization. The Wi-Fi network needs to adapt as conditions change. Read More »
Tags: 802.11ac, Cisco Mobility, DBS, DCA, Dynamic Bandwidth Selection, Dynamic Channel Assignment, HDX, high density experience, RF Neighborhood, wi-fi, wlan
Technology is important to children in terms of how they learn and how they live. A challenge for many school districts is the ability to offer a mobile learning by putting digital resources in a student’s hands with constrained funding for education.
Katy Independent School District located in Katy TX needed a wireless infrastructure that would support this vision. With over 62,000 students, Katy ISD needed to move from a wireless network that was built for coverage to a network that is built for density. By providing 802.11ac-based Wi-Fi access points in classrooms and outdoor locations and centralized management, the school district is supporting more than 40,000 concurrent Wi-Fi users and empowering faculty, students and staff. Read More »
Tags: 802.11ac, Aironet Access Points, byod, Cisco Mobility, Cisco Unified Access Solution, Katy Independent School Disctrict, mobile education, wi-fi
Fundamentals of 802.11ac Wave 2 from TechWiseTV
How well do you understand this Wave 2 release of the 802.11ac specification? Our latest ‘Fundamentals of’ addresses the technical differentiators and the potential pitfalls you should be aware of. There is a lot of power in this wave.
Just 5 Minutes to increase your knowledge: WATCH NOW
I put the full script at the bottom of this blog if interested.
Watch some of the earlier wireless fundamentals for even more wireless innovation and (IMHO) great background:
Read More »
Tags: 802.11ac, 802.11ac wave 2, CiscoMobility, Ethernet Base-T, IEEE, mimo, mobility, mu-mimo, wifi
Valley Children’s Hospital is a nonprofit, state-of-the-art, children’s hospital on a 50-acre campus in Madera, California, with a medical staff of more than 550 physicians. With 356 licensed beds, Valley Children’s Hospital is one of the largest hospitals of its type in the nation. One of the core values the hospital embraces is incorporating new ideas, technology and methods to improve the care and services it provides.
Internet of Everything has led to an explosion of wireless devices in the hospital from patient care to guest access. The following blog highlights how the IT Support and Technical Services staff enable the following business outcomes using best-in-class, highly available wireless technology from Cisco:
- Deliver Emergency Health Records to emergency staff on hundreds of virtual desktops and tablets from the patient’s bedside.
- Keep nurses connected to patients, doctors and staff via Cisco IP Phones and
- Provide free internet access to patients, family members and friends
Location: Main campus Madera, California, with several remote sites from Modesto to Bakersfield Read More »
Tags: 802.11ac, Access Point 3702i, Cisco Mobility, Internet of Everything, IoE, Non-stop Wireless, Valley Childrens Hospital