Wi-Maxtechnology is comingModernWi-Max Communication technology881462School of Engineering, University ofPortsmouth, United Kingdom. Abstract: Firstly, background information about Wi-max technology is produced.Architecture of this technology is discussed with working system figure. Usagesand features of Wi-max is explained surely.
Wi-max is compared to Wi-Fi networkwith comparison table. Advantages and disadvantages of Wi-max are presented.PEST analysis is made on Wi-Max technology.
Current research working of thistechnology is described. At last, future plan and conclusion of Wi-max ispresented.Keywords:wireless communication, IEEE 802.16, MAN, full access, coverage area.
I. Introduction Wi-max is one type of wireless communication technology and it isshort form for Worldwide Interoperability for MicrowaveAccess. It is based on standard IEEE 802.16 and designed formaking MAN (Metropolitan Area Network). Wi-max is new telecommunicationprotocol which can support full access to internet all over the city withinwide range. This is nearly the same with the Wi-Fi network, however it can beused with big coverage area. (Kaiser, 2008) (Ergen, 2009) II. Architecture of wi-max Wi-max working system contains 2 parts.
These are (1) Base tower (2) Wi-max receivers. Main base station can cover and broadcast to wide area up to 3,000square miles.Wi-max receivers can be SS devices (subscriber station) for homeor office usage or USB modem for portable devices that can be directlyconnected. Figure-How Wi-Max works (Fig-4-How-WiMAX-works, 2017) (Ray,2009) This can be appliedwith mobile phones, computers or other media devices that are games and I-podetc. This is mostly used in the way of stand-alone self-install indoor type andSS device is set in the windows of user’s home to achieve good connection. Thistype can support Wi-max network accessing into many devices within their homeor work. Another type of accessing Wi-max is using external modem that is USBdongle.
Modems can be directly connected with users’ devices and can get Wi-maxnetwork. This dongle’s antenna has low gain and this type is good for user’scoverage area. III. usage of wi-max Fixed Wi-Max is usedfor wireless connection to last mile broadband access.
Mobile Wi-Max providesroaming facility around cities and countries with many devices. This canprovide data, telecommunications and IPTV services and network accessing sourcein business continuity plan. This can support internet connection with goodefficiency and hub, router modern technologies. Users can apply internet formany purposes with different types of Wi-max.
This can be used for security asCCTV network in any places that will be universities, works and also shops orcompanies. This is also applied in calling through main stations and people cancall to others with this. Other usages for automation systems in homes orfactory can use Wi-max network for transferring data or signals. Wi-max canprovide triple play services until quality of service and multicasting with thebest technology. (Ergen, 2009) IV. features of wi-maxA.
Wi-Max specifications Wi-max can support 280Mbps maximum speed. This 802.16a can supportup to 30 miles coverage area. 802.16and 802.16e Wi-max can support 1 to 3miles. This is licensed or unlicensed airwave. This channel condition is foroutdoor non-line of sight.
This quality of service can provide MAC for usingvoice or video and many different usages. This 802.16a can support 1.5 to210MHz bandwidth. 802.
16 in 20 to 28MHz and 802.16e Wi-max to 3.6MHz can beprovided. For scalability, this channel bandwidths are able to choose fromoperators with 1.5MHz to 20MHz. This MAC can provide many customers to apply. B. Physical layer and media access control layer Wi-max can provide physical layer and media access control layer.
1) For physical layer, new 802.16e appliesscalable orthogonal frequency division multiple access and supports very manyantennas connection across MIMO. There are many advantages in manyspecifications that are coverage area, usage power, installation system andbandwidths. 2) For media access control layer, this appliesscheduling algorithm where SS devices require just one time initially enter tonetwork connnection. And this SS will get one access slot from base station.Although timing slot will be large, this continue allocates to SS and anothersubscriber stations are not able to apply this. For the case of overloads ormany SS, this will make better in bandwidth to get stability.
This can supportbase stations for quality of service parameters’ controlling in the way oftiming slot balance in SS requirements. (FULLTEXT01.pdf. 2017., 2017) V.
comparison between wi-max and wi-fi Wi-max and Wi-Fi are normally the same and they are just wirelesscommunication and internet access technologies. Wi-max IEEE 802.16 standard canprovide wider range and much Km coverage. This applies licensed or unlicensedspectrum for supporting network connections and mostly internet services. ThisWi-max is operating in connection oriented media access control (MAC) system.Wi-max quality of service system is working with connection lines between mainstation and customers’ devices. Individual connection line is operated byspecific scheduling algorithms.
Wi-Fi IEEE 802.11 standard can support networkaccessing with 2.4GHz and 5GHz RF band. This system is mostly used by endcustomers’ device.
This Wi-Fi is operating in media access control of CSMA CAprotocols and this is without connections. This quality of service system isworking with contention accessing from SS devices that allows data passingacross wireless access point. This access point must try to interrupt ofothers. Due to interrupt of nearer station devices, faraway subscriber stationto access point can decrease amount. Both Wi-max and Wi-Fi can work peer topeer and wireless ad hoc connection. Wi-Fi provides this networks directly toend usages by not using access point. But Wi-max usages should place in basestations area. This two networks are made as various conditions but these arerelated to each other.
Wi-max uses their subscriber devices to join the networkconnection and supports Wi-Fi network in our homes and work. (Kaiser, 2008) Table-Comparisonbetween Wi-max and Wi-Fi Features/technology Wi-Max Wi-Fi Coverage Wider range Smaller range Spectrum Licensed or unlicensed Unlicensed MAC Connection oriented Connectionless Quality of service Connection accessing Contention accessing VI. benefits of wi-max There are manyadvantages with Wi-max technology. Their one station provides many customers touse this.
This provides Wi-Fi network so faster than wiring network. This speedis up to 10 Mbps in 10 Km range. This is regular system and equal frequencytools must operate. Even roaming, this can get normal rate. This system is safeand flexible. This networks can also be used within rural regions.
This cansupport many various usages such as higher speed network, phone callingservices, data transferring and even video usages. This system is possible tobe improving modern technology providing internet networks and multimediausages. This can completely help network connection until end usages. Thissymmetric system divides voice transferring channel and data transferringchannel.
This connections are safety with encryption methods. This technologyis licensed spectrum. This can support portable connectivity with SS devices.
This can provide better bandwidth, speed and coverage area. (Ray, 2009) VII. problems with wi-max It has some drawbackswith Wi-max technology. This network can interfere with Bluetooth wirelessnetwork.
Installation for this technology is very big and this tools havehigher cost. Therefore, this technology is not widely applied. And then, thishas high power consumption. During bad weather condition, this Wi-maxconnections can have signal interruptions.
VIII. pest analysison wi-maxPolitical, economic, socialand technological impacts are desired as PEST analysis on Wi-max. A.
Political impact To be successful and attractive networkoperator and technology, stability and viability with regulator is important.It is important not to have political influence and wrong management system.Improvement and process ICCT requirement is not same with materialize. Licenseneeds when possible requirements for satisfying of government into citizen arenot able to be severe and inflexible. From the practice, flexible services’responsibility can satisfy needs to operator and can get profit in rural surroundingand indirectly advantages that are work making and improvement with localindustry. But when license need changes frequently and regulator is not free orendowed to enough expert, environmental effect can be got. Corruption withpolitical authorities can be worried.
Telecommunication can disagree withpolitical negotiation and rules needed to be severe effect between operator andeconomic demand. B. Economic impact Mostly, modern technology uncertainty starts from marketingeconomic effect. This is not sure to be good feedbacks of this technology ifthis is radical or incremental. Technology driving market is not sure comparedto demand driving market when radical invention is depend on presumed orextrapolated requirements different with current requirements in demand drivingmarket with incremental inventions. Although requirements for technologies arealready known, it is not easy for deciding quality and dynamics with economicdemands.C.
Social impact Demand risk is theproblem with users’ feedbacks of this technology and services provided to beaccepted. This is necessarily important to be good demand with this system tobe used by customers.D.
Technological impact Digital dividing ismain risk point and this is main that operator should decide. Because this willchange most effectively normal running systems and service requirements thatare not economic attractiveness. Convergence system will be 2nduncertainty and this is supply driving method. This system is really goodresult technology but when it has market’s economic restriction, it needs todecide probability to specifications of this system for widely usage.
(Pareek, 2006) IX. rresent research work on wi-max Current improvement of Wi-max version is Wi-max second version.This new version must be able to support more high speed than old. Now, oldversion can support at least 30-40 Mbit/s speed. The main aim with Wi-maxsecond version is for providing 100 Mbit/s to movable devices’ usages and 1 Gbit/s to portable fix devices’ usages. And then, this will support up to 4G. X. conclusion Wi-max is nice communication technologywith widely broadband internet access.
Wi-max can help users with good qualityand service by different types of applications. Wi-max network can be appliedeverywhere and every time with various kinds of accessing. In future, Wi-max’s plan does not solute backhaul to Wi-Fi. This doesadding bandwidth into 3G connection.
This will make convergence system in whichmany various devices can access to widely different network connections. References 1 K. Fazeland S. Kaiser, Multi-Carrier and Spread Spectrum Systems: From OFDM andMC-CDMA to LTE and WiMAX, 2nd Edition, John Wiley & Sons, 2008, ISBN 978-0-470-99821-22 Fig-4-How-WiMAX-works_267298329_fig4.2017. figure.
ONLINE Available at: https://www.researchgate.net.Accessed 25 December 2017.3 M.Ergen, Mobile Broadband – Including WiMAX and LTE, Springer, NY, 2009 ISBN 978-0-387-68189-44 FULLTEXT01.pdf.2017.
smash/get/diva2:828280. ONLINE Available at: https://www.diva-portal.org.
Accessed 25 December 2017.5 Pareek, D. (2006). TheBusiness of WiMAX. England: John Wiley & Sons.
6 Ramon Ray(2009) WiMax –Your Fast and Longer Distance WiFi has arrived. Personal Technology.