Electrical Contracting News (ECN) December 2016 - Page 35

DATA CABLING Leaving aside security, the take-up of BYOD/CYOD seems unstoppable and the new problem for network managers is how to provision sufficient Wi-Fi capacity for these devices as well as the extra capacity in the backbone to support all this extra traffic. Many users now have high speed broadband plus high speed Wi-Fi at home. As a consequence, they find the Wi-Fi connections at work frustratingly slow and complain accordingly. However, while the new 802.11ac standard appears to offer the solution, simply upgrading the Wi-Fi access points to the new faster standard may not be enough. Network managers need to consider the backhaul link and the backbone too. IoT We’re all fully conversant with the Internet where, generally, human operated devices such as PCs, laptops, tablets and smartphones are connected to remote servers, storage and video streaming head ends. For some time now, there has also been discussion of M2M or machine-tomachine communication via the Internet. Now, however, the Internet of Things (IoT) promises to blow the Internet wide open to billions of embedded smart devices such as wearable heart and respiration monitors, biochip monitors on farm animals and all manner of wearable devices. Plus, of course, the intelligent fridges, central heating and remote lighting control systems we read of regularly. All of them will need to communicate via the Internet. The common practice of using cheap (and frequently substandard) patch cords will inevitably lead to problems. In the enterprise, as well as needing Wi-Fi support for the types of devices just mentioned, all manner of in-building systems, particularly security and building automation, (smart buildings) will become armed with IoT enabled sensors and operating mechanisms or actuators. Gartner has forecast that by 2020 there will be 26 billion IoT devices chattering away. Another research house, ABI, says that there will be 30 billion Wi-Fi connected IoT devices. Whichever is correct, it’s a vast number! To round off the amazing predictions a French researcher JB Weldnert has estimated that, in an urban environment, for each human there are 1,000 to 5,000 ‘trackable objects’ meaning that ultimately there could be 50 to 100 trillion smart objects in the IoT. second, Wave 2, will be capable of up to 3.5Gb/s, further Waves could take that to almost 7Gb/s. It will be immediately evident to anyone involved in networking, and particularly network cabling, that the 1.0Gb/s of Category 5e and Category 6 are not adequate to support 802.11ac Wi-Fi. In fact only Category 6A, with its 10Gb/s bandwidth or 10Gb/s fibre will suffice and this has been reflected recently by standards bodies recommending that Category 6A is the minimum standard to be deployed for Wi-Fi APs. The other critical factor is that, in order to achieve these greater bandwidths, the coverage area of these devices is significantly reduced: 1.3Gb/s is available for a 5m radius and 1Gb/s at a 10m radius. This indicates that 802.11ac APs (Wi-Fi access points) should probably be installed on something like a 10m grid. Game changer – 802.11ac The new 802.11ac Wi-Fi standard is sufficiently stable for products that are now on the market. Using only the 5GHz frequency band, 802.11ac offers greater bandwidth than the current favourite 802.11n and, according to industry commentators, 802.11ac will rapidly replace 802.11n and its antecedents in corporate and enterprise environments. We expect that take-up in home Wi-Fi applications, in the many countries which now have fibre-to-the-home broadband, will lead the way by creating the manufacturing volumes to make 802.11ac economic for enterprise applications. 802.11ac is being standardised in phases. The first, called Wave 1, has a maximum bandwidth of 1.3Gb/s and the SPECIAL FEATURE Killer App Fascinatingly Wi-Fi, the technology that was once rumoured to sound the death knell for structured cabling, has now become the Killer App to drive significant 10Gb/s usage in the network horizontal. Connected ceilings The new problem for network managers is how to provision sufficient Wi-Fi capacity for BYOD/ CYOD devices. Network convergence is already driving the need for ceiling based structured cabling. Already requiring Ethernet or Ethernet with PoE power over Ethernet (PoE) in this space are: IP-CCTV; lighting controllers; air conditioning controllers; temperature and humidity sens 쁉͡ѕ)ɽ́ɥѡȁե)ѽѥ͕ɥɕѕ٥̸)ѥ]ÁA)ѥ́Ёٕ͔)ѡɕեɕЁȁѡ͔ѱ́ݥɥ͔)ɅݥѠѡ٥х嵕Ё(ȸŅ]Á͔ɥ)=ձЁͅѡЁѡ)ɕեɕЁѡݽɬɥ齹х)ݥэɽѡȁѼѡ)%Սɕٕ́)Ս͕ɽչͽѥ( A̤ݥѠ՝ѥѡЀЁ)ͽѥ̀э̤͡ձ)ѕʹɥ)՝ѕQ%؁ɽ٥)хѥ́ݥѠȁ͕́)ɔѼєɽѠ)Mхɑ́́%M<% Q%ٔ)ɕѱɕɕѥٕɴ)ᴁɥ́ȁѱ́ȁ]A)ݥѠٕȁͥѥ́ȁɕѕȁٕ)()QQ )%́ɔѼѡЁѼѕɥ͔)%ӊéх䁄ͥݥѠȁ)ɕ́Ѽͽѥ)ѥ́ɔѼȁݥэ)ݕɕ䁅ɽ٥AѼѡ)مɥ́٥͕ٕ́)Q́ݽɬɅѕ䁍ձѼ)ٕɍѡɽ́Ёե)ɝչ́她ɕ)ȁÁ٥́ͥѡ䁅ɔɕ)䁙ɔݥѠݕȁ䁉ɥѡ)եЁɐɽѡݥэ)Uͥݥэ́ݽձ)ѡѼɕЁѡȁѠȁѡݥ͔Ѽ)ѡݽɬЁѕ()Ȁ؁((д؁ф L ɅI๥((ļļ؀((0