Wireless Metropolitan Area Networks †Free Samples to Students

Question: Discuss about the Wireless Metropolitan Area Networks. Answer: Introduction Wireless metropolitan area networks (WMANs) which allows users to identify wireless networks between several areas in a city. WMAN can be used in cases where wired network become unavailable. WMANs can utilize technologies such as microwave, millimeter wave, broadband radio, free space and Wi-Fi Hotspots. (Burbank, 2013). This technology covers long distance, dedicated bandwidth and high capacity. Its links include full indoor, full outdoor, broadcast links and split mount to meet the different client needs for metropolitan scale microwave networks (Westcott Coleman, 2015). Cost: initial cost is relatively lower as in other technologies because no physical components are needed. Data capacity: 400(364) Mbps and 800(728) Mbps for High performance microwave radios Offers up to and 1.6Gbps and higher up to 3Gbps for full duplex payload. Service Area: up to radius of 100km Installation speed: faster to set up Security: Subject to Electromagnetic and Other Interference Millimeter Wave (MMW) Provides between 100mbps and 2.5 Gbps bandwidth in 60-90 GHz in TodaysMillimeter Wave (MMW) products offers 100Mbps up to 2.5 Gbps throughput in 60-90GHz range. It is a wireless transmission technology with very fast point to point connections. In metropolitan areas with congested frequencies it provides high speed connections (In Kim In Joukov, 2017). Cost: Relatively higher cost than microwave Data capacity: 100Mbps to 2.5 Gbps Service Area: up to radius of 20km Installation speed: slower than microwave Security: Better security and privacy compared to microwave MIMO OFDM Broadband Radio This technology operates on lower frequencies in the 2-6GHz to offer point to multipoint or point to point connections. Current technology provides carrier-class broadband radio devices with capacity of 867Mbps in either unlicensed or licensed bands. Widely used in wireless ISP, business enterprises, CCTV applications and governments. Orthogonal Frequency Division Multiplexing (OFDM) is a technology which addresses the problem of signal bouncing and allows Non-line-of-sight broadcasting though buildings, trees and other structures. It can be deployed in architectures like star, bus, mesh ring among others. MIMO technology utilizes several dimensional streams on similar frequency to boost rates of data 2- 4 times speed of non-MIMO devices (Angelescu, 2010). Cost: initial cost relatively high compared to other technologies. Data capacity: up to 867Mbps Service Area: up to radius of 20km Installation speed: takes relatively a longer time Security: Better security and privacy compared to microwave Free Space Optics This technology is based on optical communication that uses tweaked light to propagate data broadcasting through the atmosphere wirelessly. This differs from fibre optic which utilizes guided media such as fibre to transmit optical signals. This technology utilizes infrared light either LED or laser equipment. Free Space Optics typically uses transmission in the infrared bands using either Laser or LED devices. It offers high rates of data, superior beam collimation and high power output. Compared to microwave and Millimeter waves, it does not suffer from attenuation. Affected by atmospherically conditions such as dust storms, snow and thick fog which limits link reliability between 1-4km depending on location. Covers connection up to 4km and capacity of up to 1.5Gbps (Burbank, 2013). Cost: very low initial cost Data capacity: up to 1.5Gbps Service Area: up to radius of 4km Installation speed: very simple and takes less than 1 hour Security: line of sight operations makes its a secure system. Recommendation Therefore,if ZeeTech is considering implementing a WMAN technology then microwave is the best. This is because it is relatively cheaper to install compared to other technologies, higher bandwidth, large coverage area and ease of installation. This will link all its offices across Melbourne as well as provide mobile wireless access to the field workers that need to travel between different sites in a city. Reference Westcott, D. A., Coleman, D. D. (2015).CWNA certified wireless network administrator. Indianapolis, Indiana : John Wiley Sons In Kim, K. J., In Joukov, N. (2017).Mobile and wireless technologies. Singapore : Springer. Angelescu, S. (2010).CCNA certification all-in-one for dummies. Hoboken, N.J: Wiley. Burbank, J. L. (2013).Wireless networking: Understanding internetworking challenges. Hoboken, NJ: John Wiley.