BU E R U U US

Ex­pec­ta­tions and spec­tac­u­lar developments in the field of mo­bile com­mu­ni­ca­tions have paved the way to long Term evo­lu­tion (lte). Take a look at the changed ar­chi­tec­ture and the scope of richer con­tent mes­sag­ing through the evolved 4g tech­nol­ogy

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With the user and op­er­a­tor re­quire­ments and ex­pec­ta­tions con­tin­u­ing to evolve, the foun­da­tion of higher-level open sys­tems in­ter­con­nect (OSI) model pro­to­cols such as Long Term Evo­lu­tion (LTE) has been in­cor­po­rated un­der the third-gen­er­a­tion part­ner­ship project (3GPP R7).

It is gen­er­ally as­sumed that there will be a con­ver­gence to­wards the use of In­ter­net pro­to­cols, and all fu­ture ser­vices will be car­ried on top of IP. There­fore the fo­cus of the evo­lu­tion is on en­hance­ments to the pack­etswitched do­main. Par­tic­u­larly in LTE, WhH SRWHQWLDO WR SURYLGH VLgQL­fiFDQWOy higher data rates of more than 100 Mbps over the down­link and 50 Mbps over the up­link, and im­proved and seam­less cov­er­age is aimed at. Later, with all the in­her­ent draw­backs and dis­crep­an­cies, the long-term evo­lu­tion has al­lowed a smooth mi­gra­tion to a higher-level tech­nol­ogy called 4G.

What’s 4G mo­bile tech­nol­ogy?

4G mo­bile is based on open wire­less ar­chi­tec­ture ( OWA)— a high- speed wire­less trans­mis­sion plat­form with more cost- ef­fec­tive and spec­trum­ef­fec­tive meth­ods.

7hH wRUOG LV DW WhH HGgH WR GH­fiQH the OWA to ren­o­vate the whole wire­less in­dus­try. Fu­ture wire­less mo­bile com­mu­ni­ca­tions will be shifted from to­day’s tra­di­tional trans­mis­sion-speFL­fiF UDGLR WHFhQRORgy WR DQ LQWHUIDFHbased tech­nol­ogy in or­der to be more com­pat­i­ble with com­puter sys­tem ar­chi­tec­ture.

Mo­bile 4G will de­liver a su­pe­rior on­line ex­pe­ri­ence, with much faster ac­cess to pop­u­lar web­sites such as YouTube, Twit­ter, Face­book and Foursquare us­ing a smart­phone de­vice, or a tablet or a com­puter us­ing mo­bile broad­band con­nec­tion. Faster down­load speeds are par­tic­u­larly nec­es­sary IRU GRwQORDG RI ODUgH fiOHV VXFh DV movies or video clips, or play­ing on­line games through the In­ter­net. The fu­ture mo­bile de­vice will there­fore be fiUVW DQG IRUHPRVW D FRPSXWHU DQG WhHQ an OWA low-power ter­mi­nal.

The OWA tech­nol­ogy of­fers an op­ti­mal so­lu­tion to open up the wire­less plat­form for sim­plic­ity. It would sup­port the ser­vice-ori­ented ar­chi­tec­ture and in­fra­struc­ture that is nec­es­sary for fu­ture mo­bile phone de­vel­op­ment and ad­vance­ment. Also, the OWA would en­sure that a sin­gle ter­mi­nal can seam­lessly and au­to­mat­i­cally con­nect to any avail­able net­work.

The ser­vice-ori­ented ar­chi­tec­ture con­verges var­i­ous ra­dio trans­mis­sion tech­nolo­gies (RTTs) into an open sys­tem plat­form. It makes the users adGUHVV RQOy VSHFL­fiF VHUYLFHV DQG DSSOL­ca­tions while not car­ing about which wire­less sys­tem is re­spon­si­ble for each of them. On the other side, the co­op­er­a­tion be­tween dif­fer­ent op­er­a­tors will be cru­cial to set up the uni­form billing pol­icy and ser­vice qual­ity.

Ra­dio trans­mis­sion tech­nol­ogy. Though dif­fer­ent re­gions have di­verVL­fiHG DSSURDFhHV WRwDUGV WhH QHxW­gen­er­a­tion mo­bile com­mu­ni­ca­tion tech­nol­ogy (4G mo­bile), the fu­ture trend is com­mon—the con­ver­gence of fixHG, PRELOH DQG wLUHOHVV FRPPXQLFD­tions. No sin­gle wire­less ra­dio trans­mis­sion tech­nol­ogy can pro­vide both high-speed broad­band data rate and

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