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Topic : 3G Technology and its Impact
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Limitations of 3G

Created by : Abraham Paul, Senior Telecom Consultant, FCOMNET- Future Groups  | 02 22 2009 12:36:32 +0000
Keywords : limitations of 3g
Activity:  4341 views;  last activity : 07 06 2010 20:18:09 +0000

 

3 G has limitations.

1)  With WCDMA based 3G, as the data speed increases the coverage area of the cell become smaller and smaller.  For data rates of 2 Mbps and above, a WCDMA cell can cover only an area of 10 meter radius ie. about 300 sq. meters.

Therefore, to provide 2Mbps data connectivity to an Air port terminal of say, 600 meter square (360,000 Sq.Mtr.), there should be 1200 W-CDMA cells.

There has been some improvement with HSPDA, but still it is impossible to connect these by wireless links in cellular technology and therefore, will have to use Optical Fiber cable connectivity / PON up to the Cell terminal.  In this situation the wireless portion of the network is only at the end link of 10 meter that can be better managed with alternate technology terminals and higher reach by WiMax / WiFi wireless system.

2) As far as mobility is concerned; using W-CDMA cells, with increase in data rate  the speed of movement of user terminal also become lesser and lesser. For 2Mbps, the speed of movement will be limited to 10 meters /second, ie. a vehicle moving at 36 K.M per hour. Intricacy of 'hand over' at every 20 to 25 meters is also innumerable.

3) The success of any business comes from the volume its products can generate. Volume can be built only when the product is available, accessible and affordable to community who are interested in such products.

Delivery of 2Mbps and above products, anywhere, everywhere, any time is only sales hype. This is not realizable except in isolated hot spots in cities, and such data rates are not required by the users in their mobile situation.

It is like using a "Claw bar for a toothpick" or a "Space shuttle instead of Boeing" to travel between cities.

 
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3G has limited business scope Vs OFC combined with WiMax / WiFi are better alternatives
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The Total 3G  is an outdoor modem/router that provides internet access over EtherNet. It also provides 3.6 Mb/s HSDPA 3G connectivity with various GSM operators and is 7.2 Mb/s ready.This unit should be mounted outdoors to achieve maximum possible signal. Unit suffers no RF cable loss as it runs Ethernet all the way to the unit.

Fixed Wireless Broadband.

Fast reliable office Internet access.

This outdoor modem/router provides Internet access over EtherNET.

• Robust primary internet access for business

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• Provides 3.6 Mb/s HSDPA 3G connectivity with various GSM operators

• Next generation 7.2 Mb/s ready

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• Power-over-EtherNET (POE) simplifies installation

Out performs 3G indoor devices

 


By Ted Green, President, Bikini Computers  03 20 2009 12:58:34 +0000
 
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There are several important factors that distinguish WiMAX from other wireless technologies and make it a platform that so many tech heavyweights have been willing to support:

  • IP-based network — Since WiMAX is built on IP, it natively runs existing IP-based products, services, and utilities. VoIP is one example. This also enables much easier and cheaper network monitoring and management with standard tools.
  • A flatter, simpler topology — Because it has been designed as a data network from the ground up, WiMAX has a much simpler network topology than cellular networks, which have had to add extra layers and invent new tricks to enable their technology to handle data. WiMAX takes less equipment and less time to set up than traditional cellular infrastructure or wide-scale Wi-Fi. 
  • Lower CAPEX and OPEX — As a simpler architecture that uses less network equipment, WiMAX takes lower capital expenditures (CAPEX) to build networks and lower operating expenditures (OPEX) to maintain them. Naturally, this can result in lower service costs for end users. But just as critical is the fact that this enables WiMAX to scale very low for small installations and to quickly scale higher to meet large growth on demand.
  • Low-cost interface chips — Chipset leader Intel and chipmakers such as Sequens and Beceem have always thought of WiMAX as a mass market technology and so have architected WiMAX chip solutions aimed at large production and low cost. This has resulted in inexpensive network interface devices such as WiMAX modems and PC cards, but more important, it will make it easier for computer and consumer electronics makers to soon embed WiMAX chips into a lot of different kinds of devices.

 
By !manpreet $ingh, Management Trainee, PageTraffic  02 22 2009 13:23:30 +0000
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The cost of providing wide spread network availability, is going to be enormous which will reflect in the cost of use and in turn in low volume of users. 

Business volume will be generated only if there is large user base for the high revenue earning products. The bulk of the user community will need 3G for high data rate products such as real time streaming of video games, Digital movies and real time Video+ voice chatting and sending and receiving videos etc. 

The users interest can be converted to business volume only if the products are given at affordable cost which is not going to be the case in these current  W-CDMA based 3G products.

Cooperates and business community will be interested in Stocks and shares, and short video chats while on the move.  Veing of Stocks & Shares and on line  trading etc., do not require very high data rate. Most of the products the corporate and business community interested in their mobile terminal would be comparatively low value products and the such customer volume also will be limited.

With the high investment in W-CDMA 3G systems and Networks, added to it cost of  3G spectrum, it would be difficult to make the 3G business viable. 

The fact is that with increased data speeds the distinguishing factors between the Fixed and Mobile networks are vanishing except for the type of user device and  the end link connectivity. 

Most of these features and products could be made available at much cheaper rates via the landline links using Optical Fiber /PON to Home Networks and WiFi and Wimax for the end links for mobility in the premises. In the land line part, data links using MPLS technology is evolving as most viable  technology for Fixed Line high speed Internet,  3G in its present form will find big competition in the days to come.

Author: Abraham Paul; MD/CEO FCOMNET U.A.E & FUTURE GROUPS,  India.

Ex: V.P. Technical Sales, SIEMENS SPCNL India / Director SIEMENS ICN RHQ , U.A.E,  G.M. BPL Mobile Networks, India, Telecom Engg. Service DOT, India.

 
By Abraham Paul, Senior Telecom Consultant, FCOMNET- Future Groups  | 02 27 2009 14:36:43 +0000
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yes i feel imanpreet has given all the fact related.......... for better alternatives  ie when combined WiMax/WiFi is used with OFC..

so me to in suport of the same.....
By varsha , Head/VP/GM-Quality, frac  | 02 22 2009 14:57:41 +0000
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Argue for "OFC combined with WiMax / WiFi are better alternatives"
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