26-06-2013, 12:33 PM
3G COMMUNICATION
[attachment=56032]
INTRODUCTION
The emergence of the Third Generation Mobile Technology (Commonly known as 3G), has been the latest innovation in the field of communication. In fact, in the European market few years back the operators have taken license to operate 3G services at quite high cost. After initial teething troubles, the technology is finally taking shape. The architecture and the specification are in place. The products and the network roll outs have started and customer base is growing. This can give the customers Internet access at 2 Mbps, while he/she is on the move. Although practically, the bit rate is likely to be lower at least in the initial phase.
3G is the next generation of wireless network technology that provides high speed bandwidth (high data transfer rates) to handheld devices. The high data transfer rates will allow 3G networks to offer multimedia services combining voice and data. Specifically, 3G wireless networks support the following maximum data transfer rates:
• 2.05 Mbits/second to stationary devices.
• 384 Kbits/ second for slowly moving devices, such as a handset carried by a walking user.
• 128 Kbits/second for fast moving devices, such as handset in moving vehicles.
These data rates are the absolute maximum numbers. For example, in the stationary case, the 2.05 Mb/second rate is for one user hogging the entire capacity of the base station. This data rate will be far lower if there is voice traffic (the actual data rate would depend upon the number of calls in progress). The maximum data rate of 128 Kbits/second for moving devices is about ten times faster than that available with the current 2G wireless networks. Unlike 3G networks, 2G networks were designed to carry voice but not data. 3G wireless networks have the bandwidth to provide converged voice and data services. 3G services will seamlessly combine superior voice quality telephony, high speed mobile IP services, information technology, rich media, and offer diverse content. Some characteristics of 3G services that have been proposed are:
• Always-on connectivity. 3G networks use IP connectivity, which is packet based.
• Multi-media service with streaming audio and video.
• Email with full-fledged attachments such as Power Point files.
• Instant messaging with video/audio clips.
• Fast downloads of large files such as faxes and Power Point files.
• Access to corporate applications.
ADVANTAGES OF 3G
3G networks offer the users advantages such as:
• New radio spectrum to relieve overcrowding in existing systems.
• More bandwidth, security and reliability.
• Interoperability between service providers.
• Fixed and variable data rates.
• Asymmetric data rates.
• Backward compatibility of devices with existing networks.
• Always-online devices, 3G will use IP connectivity. IP is packet based (not circuit based).
• Rich multimedia services.
DISADVANTAGES OF 3G
There are some issues in deploying 3G:
• The cost of upgrading base station and cellular infrastructure to 3G is likely to be very high.
• Requires different handsets and there is the issue of handset availability. 3G handsets will be a complex product. Roaming and making both data/voice works has not yet been fully and seamlessly operational. Also the higher power requirement (more bits with the same energy/bit) demand a larger handset, shorter talk time, and larger batteries). Customers will prefer to have upgradeability/dual operation of existing handsets.
• Base stations need to be closer to each other thus involving more cost.
• Content Provisioning to make services popular.
POTENTIAL KILLER APPLICATIONS
Not withstanding the disadvantage mentioned above, telecom industry still perceive that there a big potential market for 3G services, Perhaps that is the reason that many operators, specially in Europe have paid heavy license fee to acquire 3G licenses. The high bandwidth of 3G networks will lead to the creation of new services, some of which we have no idea at this time. The big question is what services will be big revenue markets for the wireless service providers. In 2G networks, the big winners have been short text messaging in GSM networks (In Europe and countries other that USA) and image downloads. Some of the services likely to be big winners in 3G networks are:
• video conferencing
• video messaging
• Mobile Games
[attachment=56032]
INTRODUCTION
The emergence of the Third Generation Mobile Technology (Commonly known as 3G), has been the latest innovation in the field of communication. In fact, in the European market few years back the operators have taken license to operate 3G services at quite high cost. After initial teething troubles, the technology is finally taking shape. The architecture and the specification are in place. The products and the network roll outs have started and customer base is growing. This can give the customers Internet access at 2 Mbps, while he/she is on the move. Although practically, the bit rate is likely to be lower at least in the initial phase.
3G is the next generation of wireless network technology that provides high speed bandwidth (high data transfer rates) to handheld devices. The high data transfer rates will allow 3G networks to offer multimedia services combining voice and data. Specifically, 3G wireless networks support the following maximum data transfer rates:
• 2.05 Mbits/second to stationary devices.
• 384 Kbits/ second for slowly moving devices, such as a handset carried by a walking user.
• 128 Kbits/second for fast moving devices, such as handset in moving vehicles.
These data rates are the absolute maximum numbers. For example, in the stationary case, the 2.05 Mb/second rate is for one user hogging the entire capacity of the base station. This data rate will be far lower if there is voice traffic (the actual data rate would depend upon the number of calls in progress). The maximum data rate of 128 Kbits/second for moving devices is about ten times faster than that available with the current 2G wireless networks. Unlike 3G networks, 2G networks were designed to carry voice but not data. 3G wireless networks have the bandwidth to provide converged voice and data services. 3G services will seamlessly combine superior voice quality telephony, high speed mobile IP services, information technology, rich media, and offer diverse content. Some characteristics of 3G services that have been proposed are:
• Always-on connectivity. 3G networks use IP connectivity, which is packet based.
• Multi-media service with streaming audio and video.
• Email with full-fledged attachments such as Power Point files.
• Instant messaging with video/audio clips.
• Fast downloads of large files such as faxes and Power Point files.
• Access to corporate applications.
ADVANTAGES OF 3G
3G networks offer the users advantages such as:
• New radio spectrum to relieve overcrowding in existing systems.
• More bandwidth, security and reliability.
• Interoperability between service providers.
• Fixed and variable data rates.
• Asymmetric data rates.
• Backward compatibility of devices with existing networks.
• Always-online devices, 3G will use IP connectivity. IP is packet based (not circuit based).
• Rich multimedia services.
DISADVANTAGES OF 3G
There are some issues in deploying 3G:
• The cost of upgrading base station and cellular infrastructure to 3G is likely to be very high.
• Requires different handsets and there is the issue of handset availability. 3G handsets will be a complex product. Roaming and making both data/voice works has not yet been fully and seamlessly operational. Also the higher power requirement (more bits with the same energy/bit) demand a larger handset, shorter talk time, and larger batteries). Customers will prefer to have upgradeability/dual operation of existing handsets.
• Base stations need to be closer to each other thus involving more cost.
• Content Provisioning to make services popular.
POTENTIAL KILLER APPLICATIONS
Not withstanding the disadvantage mentioned above, telecom industry still perceive that there a big potential market for 3G services, Perhaps that is the reason that many operators, specially in Europe have paid heavy license fee to acquire 3G licenses. The high bandwidth of 3G networks will lead to the creation of new services, some of which we have no idea at this time. The big question is what services will be big revenue markets for the wireless service providers. In 2G networks, the big winners have been short text messaging in GSM networks (In Europe and countries other that USA) and image downloads. Some of the services likely to be big winners in 3G networks are:
• video conferencing
• video messaging
• Mobile Games