Wireless expert cautions against mixing Wi-Fi, DAS

In a recent post on The Cabling Blog, Oberon Inc.'s director of engineering and co-founder Scott Thompson discussed dos and don'ts of in-building distributed antenna systems. Cabling Installation & Maintenance reported in its April issue that in-building DAS are growing in popularity as wireless-device users demand connectivity everywhere, including inside buildings constructed of materials that can interfere with the wireless antenna systems residing indoors.

In his post, Thompson notes, "Clearly as people become more dependent on mobile voice and data services, there is a growing expectation for network connectivity everywhere, indoors and outdoors. DAS and related in-building wireless systems provide a means to match this expectation, even in the most challenging indoor environments."

He stresses, though, that a DAS is a different architecture than the 802.11-based wireless LAN architecture deployed within buildings. 802.11 systems comprise distributed access points with connected antennas, rather than distributed antennas. And he further cautions users not to give in to the temptation to include private wireless LAN traffic over the DAS. "Generally speaking," he says, "when you use something in a way for which it was not intended, you don't get the results you want." He also points out that Cisco has issued a positioning statement indicating the company "does not certify, endorse, or provide RF support for Wi-Fi deployments over any distributed antenna system.

"Although not specifically precluding the use of Cisco wireless LAN products in a DAS, the statement recommends special consideration of signal coverage, client-to-access-point density, client roaming, location-based services, and the impact on the 802.11n antennas used by 802.11n access points," Thompson says in the blog.

View the entire blog entry here.


Patrick McLaughlin @cablingmag

Matt Vincent @CablingTweets


Power & Telephone Supply Co

Provides products and material management solutions for communication service providers and contr...

A'n D Cable Products Inc

A'n D Cable Provides Data Center Racks, Cabinets, Zero U Rack Management including cable manageme...

Oberon Inc

Oberon is a leading designer and manufacturer of in-building wireless network infrastructure prod...

Sumitomo Electric Lightwave

Sumitomo Electric Lightwave (SEL) foresaw the migration to an all optical fiber network as early ...





There is no current content available.


Data Center Design Best Practices: Efficiencies Beyond Power and Cooling

November 3, 2015

The success and efficiency of designing your data center can be maximized though five key elements: performance, time, space, experience, and susta...

Sponsored by

Increase Rack Cooling Efficiency and Solve Heat-Related Problems

October 27, 2015

Cooling tends to take a back seat to other concerns when server rooms and small to mid-size data centers are first built. As computing needs grow, ...

Sponsored by

Power over Ethernet with Panduit Copper Cabling

October 26, 2015

Power over Ethernet (PoE) is a common way to reduce installation costs and time by allowing power and data onto a single twisted-pair cable. As the...

Sponsored by


Evolution of In-Building Wireless -- Technology Advancements

In order to meet the increasing demands for a better user experience and increasing data traffic trends, Distributed Antenna Systems (DAS) are the most useful wireless solutions to solve these issu...

Administration and Management of Structured Cabling Systems

In several respects, the physical layer of a network must be managed and administered carefully in order for that infrastructure to support the applications for which it is intended. Much of the re...

Advanced Fiber-Optic Technologies for Next-Generation Networking

For years fiber-optic cabling infrastructure has held up as a future-ready media type that user organizations of all types rely upon to serve multiple generations of networking needs. Providing bot...

November 19, 2015


Speed Feed links you to a year’s worth of Cabling Installation & Maintenance articles in one easy-to-browse list.


Follow Us & Get Updates
Industry Alerts & Reactions
  Add Us For Daily News
Email The Editor