Femtocells,instant,solution,fo technology Femtocells - An instant solution for poor indoor cellphone c

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Normal 0 false false false EN-GB X-NONE X-NONE MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable{mso-style-name:"Table Normal";mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-qformat:yes;mso-style-parent:"";mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-para-margin:0cm;mso-para-margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:11.0pt;font-family:"Calibri","sans-serif";mso-ascii-font-family:Calibri;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"Times New Roman";mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:Calibri;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;}Do you live in an area of poor cellphone coverage, wherecallers are difficult to understand or lose the connection completely? Or doyou want to use your laptop wirelessly, and want a high speed connection thatworks anywhere but is also secure?Femtocells arefully featured but very low power mobile phone basestations, connected usingstandard broadband DSL or cable service into the mobile operator's network.They offer excellent mobile phone coverage at home for both voice and data, butat lower cost than outdoor service.The femtocellsthemselves look very much like WiFi broadband modems, and some vendors haveincorporated all three features into a single box (WiFi, DSL and Mobile).Unlike WiFi,these devices use licensed radio spectrum, so must be operated and controlledby a mobile network operator. Therefore femtocells will work with only onemobile phone operator, encouraging all users in a household to switch to thesame network operator.When in rangeof the femtocell at home, the mobile phone will automatically detect it and useit in preference to the outdoor cellsites. Calls are made and received inexactly the same way as before, except that the signals are sent encrypted fromthe femtocell via the broadband IP network to one of the mobile operator’s mainswitching centres. Making andreceiving calls uses the same procedures and telephone numbers, and all thestandard features (call divert, text messaging, web browsing) are available inthe same way - indeed data services should operate more quickly and efficientlydue to the short range involved.Femtocellsoperate at very low radio power levels - less than cordless phones, WiFi ormany other types of household equipment. This substantially increases thebattery life, both on standby and talktime. Units can handle up to 3 or 4simultaneous calls from different users depending on the model.Restrictionscan be applied on who can use the femtocell service. In extreme cases, there maybe additional charges for DSL broadband supplier where a quota applies -however this would equate to many long voice calls or data service. Thus, whileoperators will hope that most femtocell users are willing to provide openaccess to other users, they usually offer the facility to restrict service to a list of up to 50 specified telephone numbers.The femtocellencrypts all voice and data sent and received from mobile phones and wouldnormally not allow access to the home computer network, so external userscannot break into your computer.In order toreduce cost, these units are self installing and use a variety of clever tricksto sense which frequency to transmit on and power level to use.They arecompatible with existing standard mobile phones, although in future some minorenhancements will improve performance. Future mobile phones will display whenthe phone is using the local femtocell (and thus using a free call allowance) -currently this can be provided by tones at the start of each call. Models havebeen developed for both of the major 3G cellphone technologies, which includethe ability for high speed data services. Many network operators are testingand trialling these systems, wanting to ensure there is no adverse impact onthe existing service. In the coming years as the technology matures, costs declineand benefits are appreciated, we can expect to see growing adoption offemtocells in many countries.