Thursday, August 26, 2010

5G Technology

Introduction to 5G Technology

5G Technology stands for 5th Generation Mobile technology. 5G technology has changed the means to use cell phones within very high bandwidth. User never experienced ever before such a high value technology. Nowadays mobile users have much awareness of the cell phone (mobile) technology. The 5G technologies include all type of advanced features which makes 5G technology most powerful and in huge demand in near future.

The gigantic array of innovative technology being built into new cell phones is stunning. 5G technology which is on hand held phone offering more power and features than at least 1000 lunar modules. A user can also hook their 5G technology cell phone with their Laptop to get broadband internet access. 5G technology including camera, MP3 recording, video player, large phone memory, dialing speed, audio player and much more you never imagine. For children rocking fun Bluetooth technology and Piconets has become in market.

What 5G Technology offers

5G technology going to be a new mobile revolution in mobile market. Through 5G technology now you can use worldwide cellular phones and this technology also strike the china mobile market and a user being proficient to get access to Germany phone as a local phone. With the coming out of cell phone alike to PDA now your whole office in your finger tips or in your phone. 5G technology has extraordinary data capabilities and has ability to tie together unrestricted call volumes and infinite data broadcast within latest mobile operating system. 5G technology has a bright future because it can handle best technologies and offer priceless handset to their customers. May be in coming days 5G technology takes over the world market. 5G Technologies have an extraordinary capability to support Software and Consultancy. The Router and switch technology used in 5G network providing high connectivity. The 5G technology distributes internet access to nodes within the building and can be deployed with union of wired or wireless network connections. The current trend of 5G technology has a glowing future.

5G Technology Features: 5G technology has powerful features as listed below

  • 5G technology offer high resolution for crazy cell phone user and bi-directional large bandwidth shaping.

  • The advanced billing interfaces of 5G technology makes it more attractive and effective.

  • 5G technology also providing subscriber supervision tools for fast action.

  • The high quality services of 5G technology based on Policy to avoid error.

  • 5G technology is providing large broadcasting of data in Gigabit which supporting almost 65,000 connections.

  • 5G technology offer transporter class gateway with unparalleled consistency.

  • The traffic statistics by 5G technology makes it more accurate.

  • Through remote management offered by 5G technology a user can get better and fast solution.

  • The remote diagnostics also a great feature of 5G technology.

  • The 5G technology is providing up to 25 Mbps connectivity speed.

  • The 5G technology also support virtual private network.

  • The new 5G technology will take all delivery service out of business prospect

  • The uploading and downloading speed of 5G technology touching the peak.

  • The 5G technology network offering enhanced and available connectivity just about the world

4G wireless technology


4G is short for Fourth Generation wireless Technology. It is basically the extension in the 3G technology with more bandwidth and services offers in the 3G. But at this time nobody exactly knows the true 4G definition. Some people say that 4G wireless technology is the future technologies that are mostly in their maturity period. The expectation for the 4G technology is basically the high quality audio/video streaming over end to end Internet Protocol. If the Internet Protocol (IP) multimedia sub-system movement achieves what it going to do, nothing of this possibly will matter. WiMAX or mobile structural design will become progressively more translucent, and therefore the acceptance of several architectures by a particular network operator ever more common.

Many Technologies appear in many different flavours and have many diverse tags attached to them, but that does not really indicate that they are moving in dissimilar tracks. The technologies that fall in the 4G categories are UMTS, OFDM, SDR, TD-SCDMA, MIMO and WiMAX to the some extent.


4G Technology offers high data rates that will generate new trends for the market and prospects for established as well as for new telecommunication businesses. 4G wireless networks, when tied together with mobile phones with in-built higher resolution digital cameras and also High Definition capabilities will facilitate video blogs.

After successful implementation, 4G wireless technology is likely to enable ubiquitous computing, that will simultaneously connects to numerous high date speed networks offers faultless handoffs all over the geographical regions. Many network operators possibly utilize technologies for example; wireless mesh networks and cognitive radio network to guaranteed secure connection & competently allocates equally network traffic and bandwidth.

Some of the companies trying 4G communication at 100 Mbps for mobile users and up to 1 Gbps over fixed stations. They planned on publicly launching their first commercial wireless network around 2010. As far as other competitor’s mobile communication companies working on 4G technology even more quickly. Sprint Nextel was planned to launch WiMAX over 4G broadband mobile network in United States. Some of the other developed countries like United Kingdom stated a plan to sale via auction of 4G wireless frequencies couple of years back. The word “MAGIC” also refers to 4G wireless technology which stands for Mobile multimedia, Any-where, Global mobility solutions over, Integrated wireless and Customized services.

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BSNL 3G Technology

3G Technology

If you want augmented bandwidth, multiple mobile applications and clarity of digital signals, then 3G (Thrid Generation Technology) is your gateway. GSM technology was able to transfer circuit switched data over the network. The use of 3G technology is also able to transmit packet switch data efficiently at better and increased bandwidth. 3G mobile technologies proffers more advanced services to mobile users. It can help many multimedia services to function. The spectral efficiency of 3G technology is better than 2G technologies. Spectral efficiency is the measurement of rate of information transfer over any communication sytem. 3G is also known as IMT-2000

3G technology and 3g Technologies characteristics

3G technologies make use of TDMA and CDMA. 3G (Thrid Generation Technology) technologies make use of value added services like mobile television, GPS (global positioning system) and video conferencing. The basic feature of 3G Technology (Thrid Generation Technology) is fast data transfer rates. However this feature is not currently working properly because, ITU 200 is still making decision to fix the data rates. It is expected that 2mbit/sec for stationary users, while 348kbits when moving or traveling. ITU sell various frequency rates in order to make use of broadband technologies. Network authentication has won the trust of users, because the user can rely on its network as a reliable source of transferring data.3G technology is much flexible, because it is able to support the 5 major radio technologies. These radio technologies operate under CDMA, TDMA and FDMA.CDMA holds for IMT-DS (direct spread), IMT-MC (multi carrier). TDMA accounts for IMT-TC (time code), IMT-SC (single carrier). FDMA has only one radio interface known as IMT-FC or frequency code. Third generation technology is really affordable due to the agreement of industry. This agreement took pace in order to increase its adoption by the users. 3G (Thrid Generation Technology) system is compatible to work with the 2G technologies. 3G (Thrid Generation Technology) technologies holds the vision that they should be expandable on demand. The aim of the 3G (Thrid Generation Technology) is to allow for more coverage and growth with minimum investment.


3G technologies (Third Generation Technologies)
There are many 3G technologies as W-CDMA, GSM EDGE, UMTS, DECT, WiMax and CDMA 2000.Enhanced data rates for GSM evolution or EDGE is termed to as a backward digital technology, because it can operate with older devices. EDGE allows for faster data transfer than existing GSM.EDGE was introduced by AT& T in 2003.EDGE has increased the GSM coverage up to three times more. EDGE is a 3G Technology (Thrid Generation Technology); therefore it can be used for packet switched systems. Universal mobile telecommunications systems .UMTS conforms to ITU IMT 2000 standard. It is complex network and allows for covering radio access, core network and USIM (subscriber identity module). It is a relatively expensive technology for the network operators because it requires new and separate infrastructure for its coverage. The GSM is the base of this technology. CDMA is also referred to as IMT-MC. this technology is close to 2G technology GSM because it is also backward compatible. Digital enhanced cordless telecommunications (DECT) is another 3G Technology (Thrid Generation Technology). DETC was developed by European telecommunications standards institute; however it is now widely popular in the other countries of the world as well. It runs over a frequency of 1900Mhz. WiMax is a 3G Technology (Thrid Generation Technology) and it is referred to as worldwide interoperability for microwave access. It is a wireless technology. It transmits variety of wireless signals. It can be operated on the multi point and point modes. it is portable technology. This technology is based on the wireless internet access. Name of the WiMax was developed in 2001 by WiMax forum. This technology removes the need for wires and is capable enough to provide 10mbits/sec. it can connect you to hotspot,

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WiMAX Technology- Features


Wimax Features

WiMAX is a great invention in wireless technology providing 30 miles broadband access to mobile users. Wimax technology based on IEEE 802.16 standard and it is a telecommunication protocol offering full access to mobile internet across cities and countries with a wide range of devices. Wimax technology has salient features as described below.

Wimax support multipath

Wimax technology is offering OFDM-based physical layer which is based on orthogonal frequency distribution. The Wimax technology is providing confrontation to multipath. Due to its good architecture it allows the user to operate in NLOS condition. Now Wimax is familiar as a technique of multi path for wireless network.

Wimax broadband access

Wimax technology is offering very high speed broadband access to mobile internet. When you are using 20MHz the data rate can be high up to 74Mbps. Generally 10MHz wit the TDD scheme provides 3:1 up and down link ratio. Wimax providing very good signals therefore higher data rate can be achieved with multiple antennas. Antennas are used for beam forming, space time coding etc.

Wimax offer high speed data rate

The scalable architecture of physical layer is offering high speed data rate. Wimax technology is providing easily scaling of data with possible bandwidth of channel. If the bandwidth of channels may from 1.25MHz to 10MHz then a system can use 128, 512, 048 bit FFTs which provide dynamically roaming across numerous network having dissimilar bandwidth.

Wimax offer modulation and error correction

The use Wimax technology is increasing rapidly because it supports lots of modulation and error correction facility to user. It also allowing a user that they could change the scheme according to channel condition. (AMC) Adaptive Modulation and Coding is a valuable method to exploit throughput in a varying channel.Wimax support reliability of data

Automatic retransmission of data supported by Wimax at data link layer for link is a great feature. It is not only improving reliability but also enabled ARQ which necessitate each broadcast packet to be recognized by the receiver, and if any unacknowledged data packets are unspecified to be misplaced and are retransmitted.

Wimax mobility

The basic and most important feature of Wimax technology is to support mobility applications as VoIP. The power saving mechanism of Wimax technology is used to extend the battery life of handheld devices. It supports mobile applications including channel estimation, subchannelization, power control etc.

To get access to wimax base station is not a huge task now because the wide range of connectivity of wimax provides access to base station from home. Installation of hardware is also very easy with wimax technology. With the growth of Wimax technology its more feature may also comes up.

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Tuesday, August 24, 2010

Wimax 802.16 Standards-Wimax Specifications

Wimax standards & Specifications

Many standards are often referred to as Wimax (802.16)or broadband access standards just like Wi-Fi. Technically, Wimax supports IEEE 802.16 wimax specifications and will continue to developments as the specifications evolve, but other standards have also been produced based on the 802.16 specification. Some of them are extensive enough to get attention by the Wimax Forum, including HiperMAN and WiBro. Wimax (802.16) effectively holds all of Wimax (802.16) standards.

IEEE 802.16-2004

This standard is the formal one being used for current fixed and nomadic Line Of Sight(LOS) and Non Line Of Sight(NLOS) Wimax (IEEE 802.16) implementations and is based on and backwardly compatible with 802.16 and 802.16a . The WiMAX Forum profiles supporting IEEE 802.16 2004 are in the 3.5 GHz and 5.8 GHz frequency bands. Vendors are currently creating indoor and outdoor customer subscriber stations equipment and laptop PCMCIA cards to support this specification. This standard will be used for cell creation in non-mobile scenarios and LOS distance links.The theory of duplexing refers to the management of upstream and downstream traffic flows. Frequency division duplexing (FDD) uses two channels. One channel is used for upstream traffic and the other is used for downstream traffic.

IEEE 802.16e

802.16e standard is an extension to the 802.16-2004 specification and supports mobile communications. This mobility is provided through handoffs and roaming support built in to the standard. While intended to provide mobility, this technology is used by service providers to provide fixed access as well. 802.16e specification operates in the 2.3 and 2.5 GHz frequency bands.


HTSI HyperMAN


The European Telecommunications Standards Institute produced the HiperMAN standard for broadband wireless MAN implementations. The HiperMAN standard operates in the frequency ranges between 2 GHz and 11 GHz. It was purposely made in close association with the IEEE Standards; it is based on 802.16 and is compatible with the 802.16a-2003 specification. Like WiMAX, HyperMAN supports both point-to-multipoint and mesh network implementations.

WiBro

WiBro Stands for Wireless Broadband, it is a wireless Metropolitan Area Network (MAN) standard initially built by the Telecommunication Technology Association (TTA) of South Korea. Phase 1 of WiBro was approved in November 2004. The standard was developed to fill the space between 3G and Wireless Local Area Network (WLAN) standards; providing more data rate, mobility and coverage required delivering internet access to mobile clients via handheld devices.

The standard uses 100 MHz of licensed Radio Frequency (RF) spectrum, from 2.30 to 2.40 GHz, allocated by the South Korean Ministry of Information and Communication for mobile wireless internet usage, and adjacent to the international unlicensed 2.4 GHz ISM band. The IEEE 802.16-2004 and Draft 3 of the 802.16e standard were the basis for the development of WiBro, and the key PHY parameters are compatible between the two standards.

The WiBro Medium Access Control (MAC) supports three discreet service levels including guaranteed Quality of Service (QoS) for delay sensitive applications, based on real time polling of station requirements, and an intermediate QoS level for delay tolerant application that require a minimum guaranteed data rate.

Phase 2 of the standard is designed to focus on network capacity enhancement technology, including Multiple Input Multiple Output (MIMO) radio, adaptive antenna systems and space time coding, as well as additional standardization with 802.16e





Before BSNL WiMAX - WiMAX History

Wimax Technology Background, WiMAX History

Now the question comes to our attention, what is Wimax technology and how wimax technology works and why has it taken so long to appear in the marketplace? The definition according to Wimax technology forum, an organization dedicated to promoting Wimax technology and specifications, According to WiMAX forum "Wimax Technology is a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL. Wimax Technology will provide fixed, nomadic, portable, and, eventually, mobile wireless broadband connectivity without the need for direct line-of-sight to a base station. In a typical cell radius deployment of 3 to 10 kilometres, Wimax Forum Certified systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications." (WiMax Forum, 2007)



In the Wimax terminology, portable access means you can access Wimax networks from different locations, but not necessarily while moving. Mobile Wimax is accessible while on the move.


From this definition, we can see why Wimax Technology has been such a trendy topic in the wireless industry. The capability to provide multiple channels at 40 Mbps for cell sizes from 3 to 10 kilometres is well above what can be accomplished with standard 801.llg or 802.lla wireless point-to-point. In addition, non-line-of-sight (NLOS) features of some Wimax technology provide the possibility for better coverage in wooded or congested areas.


A Wimax technology network consists of two major components: a wimax base station and a subscriber station (wimax cpe). Wimax base stations provide connectivity to one or more subscriber stations and are implemented by service providers to provide Internet, voice, video or Wireless Area Network (WAN) link access.

These base stations are similar to Wi-Fi Access Points (APs) as they provide centralized access to back end connected networks. They use different standards than Wi-Fi, however, so the evaluation ends there. While subscriber stations are uniquely designed for 802.16 networks, the reality is that they provide a connection to the network and you can still route internal 802.11 devices through the 802.16 subscriber station for network access.


Sunday, August 22, 2010

The Economics of 4G WiMAX



The benefits, from an access perspective, of WiMAX, are evident — it brings a new combination of access, mobility, speed, and reliability to the game. As with any technology, however, the question, now that that the WiMAX standard has been defined and is being implemented by providers and equipment vendors, is what is the value proposition? Who will pay for it, and how much will it cost? How will WiMAX costs compare to other broadband access services?

First, initial WiMAX deployment costs are going to be substantially reduced, since there is no fiber to be run to each subscriber, as there is in xTTH deployments. DSL providers have the inherent advantage of having the access lines already laid, so the difference there is a bit less — WiMAX deployment will cost between one-eighth and one-quarter the cost for DSL deployment per home passed.

As for other wireless alternatives, like 3G, 3.5G, and 4G, the number is similar — WiMAX will cost about 16 percent of the cost of other cellular-based broadband, largely because it will require fewer towers. Those are the closest comparisons. When compared to cable and FTTH deployments, WiMAX costs should come in under one percent of either alternative.

These deployment economics alone should be cause for concern for landline operators that could see WiMAX providers enter the market with considerably lower CAPEX. That is, of course, assuming they can get subscribers to pay for the service — after all, they’re not about to build WiMAX towers without a plan for revenue generation.

SOURCE

Saturday, August 21, 2010

Wimax vs WiBro


Wimax vs WiBro

WiBro is a new wireless technology developed to consent user to watch TV on their cell phones. South Korea telecom industry developed IEEE 802.16e as international standard. Wibro implement TDD for duplexing. It uses OFDM for manifold access with 8.75 MHz as a channel bandwidth. WiBro was developed to defeat the data rate restrictions of cell phones as CDMA. WiBro also used to adjoin mobility to broadband Internet access like ADSL. WiBro wireless technology is still in the developmental process and when it improves it may call for an entirely different standard on the whole with a finally different name.

Differnce between Wimax vs Wibro

* Wibro has been in the workings for around the same time as from WiMax. This wireless technology introduced as a mobile broadband access in Korea as a mobile broadband but since it is based on Wimax and only Korean deploy Wibro.
*The base station of Wibro provides data 30 Mbits to 50 Mbits per carrier and conceal 1 to 5km radius permit for the use of moveable internet usage for moving devices it provide 120 km/h (74.5 miles/h).While the coverage range of wimax is 70 kilometers along 4km radius.
* The technology of Wibro also offers high quality services such as inclusion of video streaming content and loss responsive data in consistent manner and it is a great advantage over fixed wimax technology.


* There are many telecom industries trying to commercialize the WiBro such as TI, TVA, PORTUS, and Arialink. WiBro is fairly exact in its necessities from spectrum use to equipment design. While Wimax leaves much of this up to the equipment supplier while provided that sufficient element to make sure interoperability among designs.

* WiMax is calm of two versions in which one is stationary and second is mobile. Commonly WiMax is for public in fixed locations while Wibro and Mobile specifications are mobility.

* Wibro facilitate the user to get access to internet doesn’t matter traveling at the speed of up to 120 kilometers while WiMax at present lacks such capability.

* WiMax is being sponsored and developed in India by Intel while Samsung Electronics is the foremost developer of Wibro.

* Wibro is better than Wimax because the Wimax technology still facing compatibility problems while Wibro is already broadcast data on fast-moving equipment at 60km/h and through.

* The broadcasting of data between two bases station in possible in Wibro. WiMAX network with 802.16 standards allows only a lot of users on the standard and if any user trying to use the connection it will immediately cut off any additional users.

* Wibro network technology is very alike Wimax the transmission speed of both technologies are the same, but the difference is that a Wibro can mark out a receiver that is stirring from one location to another location, while Wimax does not propose this because it requires a stationary antenna for the purpose of receiving signal.

* Wimax is a telecommunication technology based on IEEE 802.16 standards offering sending and receiving of wireless data over long distance in a different manners from point to point or point to multipoint, while WiBro is a wireless broadband technology being developed and it is the Korean service name for IEEE 802.16e.

* WiBro design offer very high speed which is up to 74MPH while Wimax offer connectivity over 31 miles. Wibro provide exact figure which is 74 MPH and Wimax provide best connectivity only in specified region or if user exist very near to tower.

* The WiMax technology is well recognized than WiBro but it has become more important and in the future WiBro wireless technology will be resolute more thoroughly.
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