Networks Europe May-Jun 2018 | Page 14

14 WIRELESS NETWORKING

14 WIRELESS NETWORKING

cabling all the way to the backbone and active equipment . The standards also recommend a minimum of two ‘ Service Outlet ’ Cat 6A cables for each WAP for backup power capabilities in case one power source isn ’ t working . Two cable runs will also prepare the infrastructure for future expansion and data requirements . The Distributed Building Services standards also provide recommendations for outlet density based on square meterage and device requirements
It ’ s also recommended to install shielded cabling for WAPs powered by PoE . The standard PD CLC / TR 50174- 99-1:2015 Information technology — Cabling installation Part 99-1 : Remote powering describes heat rise when using remote powered devices , and shows that shielded cables are better placed to minimise the impact of elevated temperatures on the channel performance of the cables .
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the real benefits of 802.11ac , and standards have been revised to support access point upgrades . The EN 50173-6 , Information technology — Generic cabling systems Part 6 : Distributed building services standard and the recently published ISO 118001-6 Information technology – Generic cabling for customer premises – Part 6 : Distributed building services both publish recommendations for designing infrastructure systems to support WiFi as well as other devices , such as cameras , security and BAS ( Building Automation Systems ).
The newly published ISO 11801-6 also mandates the use of components to ensure a minimum of Class EA channels is provided , this is achieved by design with Category 6A components , for distributed building services as well as supports 802.11ac devices with data rates up to 6.9 Gb / s . It will also support devices with data rates up to 10 Gb / s under the next generation 802.11ax wireless standard . The ISO and EN recommendations also address cabling to meet IEEE 802.11ad wireless technology . Ratified in June 2013 , 802.11ad is designed to provide data rates up to 7 Gb / s , but within a much shorter range .
The standards target high-bandwidth needs under 10 metres , in areas without obstructions such as furniture and walls . It operates in the 60 GHz band where there is little congestion , and serves a much narrower purpose , as it is largely used for connections between specific devices . By using a Class EA ( Cat 6A ) RJ-45 interface and twisted-pair structured cabling system , users get the added benefit of backwards compatibility and connection from the horizontal
What ’ s next ? In March 2014 , IEEE approved a task force to create 802.11ax , a follow-up to 802.11ac , which will support speeds of 10 Gb / s and offer greater network capacity . The standard is expected to be complete by 2019 . Also , both IEEE , ISO , and TIA published standards for 2.5GBASE-T and 5GBASE-T in 2016 . IEEE 802.3bz , ISO / IEC TR 11801-9904 , and TIA TSB-5021 specifications allow enterprise networks to swap out active gear and transmit 2.5 Gb / s and 5 Gb / s speeds over existing Cat 5e or Cat 6 cabling to WAPs , extending the life of their current infrastructure .
However , the biggest driving factor for 2.5 Gb / s and 5 Gb / s deployment is also its greatest challenge . The bandwidth demand for wireless is increasing at a faster rate than that of wired networks . As the demand for greater wireless performance continues to grow , even 5 Gb / s networks may struggle to keep up , as 802.11ac already allows wireless speed up to 6.9 Gb / s and 802.11ax will support 10 Gb / s and greater .
It ’ s important to consider your anticipated needs and plan accordingly . Some facilities only need a small boost in bandwidth , but networks that intend on using 2.5GBASE-T or 5GBASE-T as a short-term solution will require multiple tech refreshes . In this instance , a 10GBASE-T upgrade with Cat 6A cabling may provide greater overall cost savings and prepare your infrastructure to handle emerging wireless demands . n
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