Tessco Wireless Journal October November 2014 Page 5 Wireless Journal October-November 2014

The entire product offering and your pricing is on TESSCO.com or call TESSCO at 800.472.7373. 5 October / November 2014 was aligned to a side-lobe of the receiving antenna. Arbuckle, impressed with the ease of use and efficiency of the device, ended up ordering two Spectrum Compact kits and three waveguides for future installation and troubleshooting of 6, 11, 18 and 24 GHz links. Spectrum Compact Advantages Visit www.tessco.com/go/saf. TESSCO FEATURE (continued from page 1) Spectrum Analyzer Easily Detects Troublesome Radio Alignment Issue of buildings with or without an enclosure. enabled device. With the surge of wireless data traffic generated by smartphones, tablets, laptops and other wireless devices, the ability to access high-speed connec- tions is becoming increasingly difficult over the cellular network. Enterprise and cellular service providers alike are relying more and more on Wi-Fi APs and wireless LANs to offload the cellular network from mobile data. Major wireless OEMs now are rolling out new small cell designs that incorporate a Wi-Fi AP. For now, the majority of small cells are deployed inside buildings to ex- tend cellular coverage and capacity. An integrated AP in a small cell can facilitate data offload at the point of access. Additionally, Tier 1 cellular operators all have committed to expanding Wi-Fi deploy- ments in their cellular coverage areas to give users flexibility in accessing data con- nections and to offload that data from the cellular network at the point of connection. Still, drawbacks remain to widespread Wi-Fi operations. As an unlicensed facility, the potential for interference and signal degradation always exists. Public Wi-Fi APs often are overloaded, thus slowing down connections. Not all public APs work in the same way, so consistency and qual- ity of service remains an issue. Private WLANs can be configured to minimize such problems often by requiring au- thentication to limit usage to authorized personnel only. "We're Going to Need a Bigger Boat!" What are the implications of all this mobile data traffic for Enterprise net- works that should concern CIOs and IT engineers? With 802.11ac, wireless LAN sites will be able to support more clients at net- work APs. Every AP or cluster of APs is connected to a data switch, referred to as an edge switch because it provides a connection at the edge of the network. As the volume of data from each wireless device connected to the AP rolls up, it must be transported from edge switches over a data network back to a data center. This means that more aggregation switches will be needed at in- termediate points in the network, and more core switching and routing capacity must be added at the cen- ter of the network. If the mobile data growth projections hold true, data center managers will be scram- bling to keep up for some time to come. To quote that famous line by Police Chief Brody from the 1975 movie "Jaws": "We're going to need a bigger boat!" In fact, the data net- work must be beefed up at every stage from edge switches to aggre- gate switches and into the core switches and routers. Fabric switches will certainly aid in reducing the number of paths over which data is switched and will help with load bal- ancing and redundancy in the event of any path failure. In the end, demand for high-speed data connectivity is not going to slow down. Better management of this data surge will come from well-planned, Wi-Fi-enabled indoor networks and corresponding data center upgrades. John Celentano can be reached at celentanoj@tessco.com " We were so impressed with the loaned device that we bought our own spectrum analyzer. It will pay for itself with the time saved on installing and servicing microwave equipment." - Don Clowdus, CEO of Arbuckle Communications TESSCO No. 511977 Outdoor AP TESSCO No. 541974 Outdoor AP

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