06-04-2010, 06:46 PM
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INTRODUCTION TO 4G
Fourth Generation (4G) wireless communications
1. What is fourth generation (4G) mobile
At present the download speed for mobile internet connections in Japan are between 9.6 kbit/s for 2G cellular, up to 128 kbit/s for PHS, typically 200 kbit/s (nominally 384 kbps) for DoCoMo and Vodafone 3G cellular, and 2.4 Mbps for KDDI/AU CDMA2000-1x-WIN service. However, in actual use the data rates are usually slower, especially in crowded areas, or when the network is "congested". 4G mobile data transmission rates are planned to be up to 20 megabits per second.
Read more about the two waves of 3G introduction in Japan: our 3G FAQ (html) and our 3G report (pdf-file for download). In our 3G report you will find a lot of market data for Japans 3G market (20 million 3G subscribers in Japan in July 2004), which will give you a good idea about what 4G might look like in the future.
2. What is DoCoMo's MOTO-Media
NTT-DoCoMo and Hewlett-Packard have announced that the two companies are jointly developing technologies for 4G wireless communications. They have named the technology platform: MOTO-Media.
3. When will 4G (broadband) mobile communications being introduced in Japan
Initially DoCoMo planned to introduce 4G services around 2010. Recently DoCoMo announced plans to introduce 4G services from 2006, i.e. four years earlier than previously planned.
4. What will the data rates be for 4G (broadband mobile) in Japan
At present (2G) imode data rates in Japan are up to 9.6 kbit/sec, but usually a lot slower, and 28.2kbps for 504i, 505i, 506i handsets (since May 2002). For 3G (FOMA) data rates are at present around 200kbps (download) and 64kbps (upload) and will in the future be upgraded to 10 Mbit/sec. KDDI/AU offers 2.4 Mbit/s since December 2003. For 4G data rates up to 20 Megabytes per second are planned. This is about 2000 times faster than present (year 2001) mobile data rates, and about 10 times faster than top transmission rates planned in the final build out of 3G broadband mobile. It is about 10-20 times faster than standard ASDL services, which are being introduced for internet connections over traditional copper cables at this time (2001).
5. What type of services will 4G allow
Of course it is impossible to predict technology developments and the evolution of culture and customer needs. 4G in principle will allow high-quality smooth video transmission.
6. Is video really a killer application for 3G and 4G
Usage data in Japan do not show that video telephony is a real killer application for 3G. However, this may change if quality and market penetration improves or different marketing models are found. We believe however that music is a killer application - compare for example the success of iPod. At the moment (3G) only very short music clips can be downloaded. 4G is likely to enable the download of full length songs or music pieces which may change the market response dramatically. Music rights management will be a major issue to solve.
What is 4G Cellular
The face off between 4G verses Wi-Fi verses WiMAX will be a globally adopted network of shared applications, resources and standards meeting a minimum delivery requirement of VoFi, broadband, and multimedia services to all 4G enabled end-users.
The goal of 4G will be to replace the entire core of cellular networks with a single worldwide cellular network completely standardized based on the (Internet Protocol) IP for video, packet data utilizing Voice over IP (VoIP) and multimedia services. The newly standardized networks would provide uniform video, voice, and data services to the cellular handset or handheld Internet appliance, based entirely on IP (Internet Protocol).
The 4G standards have not been set and underlying technologies are not fixed, which leaves plenty of room for other applications to overlap into the 4G space. The industry has guidelines for the migration from 3.0G to 4.0G, but a clear path has not been proven.
The 4G providers of advanced cellular technology in FEC (Forward Error Correction) are adopting Concatenated Coding which has the capability of multiple QoS (Quality of Service) levels. FEC coding adds redundancy to a transmitted coded signal through encoding prior to transmission.
A major advantage of Concatenated Coding over the Convolution Coding method by Viterbi will be improved network performance by the combining of two or more coding techniques, such as a Reed-Solomon and a Convolution Code, as one Concatenated Code. The combination improves error correction and combines error correction with error detection. FEC using Concatenated Coding allows a wireless network to send much larger blocks of data while reducing bit-error rate, thereby increasing the overall through-put.
The primary goal of the planned 4G cellular services will include the following:
¢ Interactive Multimedia, Voice, Video Streaming
¢ High Speed Global Internet Access “ VPN Availability
¢ Service Portability with Scalable Mobile Services
¢ High Speed, High Capacity, Low Cost Services
¢ Improved Information Security
¢ QoS Enhancements
¢ Multi-Hop Networking
¢ Spectral Bandwidth Efficiencies (8bits/Second/Hz)
¢ Seamless Network of Multiple Protocols - 4G must be all-IP*
*Therefore compatible with all common network technologies, including 802.11, 802.16e, 802.20, W-CDMA, Bluetooth, Hyper LAN, WiFi and WiMAX 3G with other wireless technologies are under development to meet the standards of performance for 4G deployment
Highlighting the primary drivers for 4G wireless network deployments are cost, speed, flexibility and universal access. Increased speed is a critical requirement for 4G wireless services to be successful. Data-rate increases of 10-50X over 3G will put streaming audio and video access into the hands of consumers. Each wireless generation demands a much richer set of wireless features.
CONCLUSION
4G: Anytime, Anywhere Connection
Also known as ËœMobile Broadband everywhereâ„¢
MAGIC
Mobile Multimedia Communication
Anywhere, Anytime with Anyone
Global Mobility Support
Integrated Wireless Solution
Customized Personal Service
According to 4G Mobile Forum, by 2008 over $400 billion would be invested in 4G mobile projects.
In India, communication Minister Mr. Dayanidhi Maran, has announced a national centre of excellence to work in 4G arena.
[attachment=3055]
INTRODUCTION TO 4G
Fourth Generation (4G) wireless communications
1. What is fourth generation (4G) mobile
At present the download speed for mobile internet connections in Japan are between 9.6 kbit/s for 2G cellular, up to 128 kbit/s for PHS, typically 200 kbit/s (nominally 384 kbps) for DoCoMo and Vodafone 3G cellular, and 2.4 Mbps for KDDI/AU CDMA2000-1x-WIN service. However, in actual use the data rates are usually slower, especially in crowded areas, or when the network is "congested". 4G mobile data transmission rates are planned to be up to 20 megabits per second.
Read more about the two waves of 3G introduction in Japan: our 3G FAQ (html) and our 3G report (pdf-file for download). In our 3G report you will find a lot of market data for Japans 3G market (20 million 3G subscribers in Japan in July 2004), which will give you a good idea about what 4G might look like in the future.
2. What is DoCoMo's MOTO-Media
NTT-DoCoMo and Hewlett-Packard have announced that the two companies are jointly developing technologies for 4G wireless communications. They have named the technology platform: MOTO-Media.
3. When will 4G (broadband) mobile communications being introduced in Japan
Initially DoCoMo planned to introduce 4G services around 2010. Recently DoCoMo announced plans to introduce 4G services from 2006, i.e. four years earlier than previously planned.
4. What will the data rates be for 4G (broadband mobile) in Japan
At present (2G) imode data rates in Japan are up to 9.6 kbit/sec, but usually a lot slower, and 28.2kbps for 504i, 505i, 506i handsets (since May 2002). For 3G (FOMA) data rates are at present around 200kbps (download) and 64kbps (upload) and will in the future be upgraded to 10 Mbit/sec. KDDI/AU offers 2.4 Mbit/s since December 2003. For 4G data rates up to 20 Megabytes per second are planned. This is about 2000 times faster than present (year 2001) mobile data rates, and about 10 times faster than top transmission rates planned in the final build out of 3G broadband mobile. It is about 10-20 times faster than standard ASDL services, which are being introduced for internet connections over traditional copper cables at this time (2001).
5. What type of services will 4G allow
Of course it is impossible to predict technology developments and the evolution of culture and customer needs. 4G in principle will allow high-quality smooth video transmission.
6. Is video really a killer application for 3G and 4G
Usage data in Japan do not show that video telephony is a real killer application for 3G. However, this may change if quality and market penetration improves or different marketing models are found. We believe however that music is a killer application - compare for example the success of iPod. At the moment (3G) only very short music clips can be downloaded. 4G is likely to enable the download of full length songs or music pieces which may change the market response dramatically. Music rights management will be a major issue to solve.
What is 4G Cellular
The face off between 4G verses Wi-Fi verses WiMAX will be a globally adopted network of shared applications, resources and standards meeting a minimum delivery requirement of VoFi, broadband, and multimedia services to all 4G enabled end-users.
The goal of 4G will be to replace the entire core of cellular networks with a single worldwide cellular network completely standardized based on the (Internet Protocol) IP for video, packet data utilizing Voice over IP (VoIP) and multimedia services. The newly standardized networks would provide uniform video, voice, and data services to the cellular handset or handheld Internet appliance, based entirely on IP (Internet Protocol).
The 4G standards have not been set and underlying technologies are not fixed, which leaves plenty of room for other applications to overlap into the 4G space. The industry has guidelines for the migration from 3.0G to 4.0G, but a clear path has not been proven.
The 4G providers of advanced cellular technology in FEC (Forward Error Correction) are adopting Concatenated Coding which has the capability of multiple QoS (Quality of Service) levels. FEC coding adds redundancy to a transmitted coded signal through encoding prior to transmission.
A major advantage of Concatenated Coding over the Convolution Coding method by Viterbi will be improved network performance by the combining of two or more coding techniques, such as a Reed-Solomon and a Convolution Code, as one Concatenated Code. The combination improves error correction and combines error correction with error detection. FEC using Concatenated Coding allows a wireless network to send much larger blocks of data while reducing bit-error rate, thereby increasing the overall through-put.
The primary goal of the planned 4G cellular services will include the following:
¢ Interactive Multimedia, Voice, Video Streaming
¢ High Speed Global Internet Access “ VPN Availability
¢ Service Portability with Scalable Mobile Services
¢ High Speed, High Capacity, Low Cost Services
¢ Improved Information Security
¢ QoS Enhancements
¢ Multi-Hop Networking
¢ Spectral Bandwidth Efficiencies (8bits/Second/Hz)
¢ Seamless Network of Multiple Protocols - 4G must be all-IP*
*Therefore compatible with all common network technologies, including 802.11, 802.16e, 802.20, W-CDMA, Bluetooth, Hyper LAN, WiFi and WiMAX 3G with other wireless technologies are under development to meet the standards of performance for 4G deployment
Highlighting the primary drivers for 4G wireless network deployments are cost, speed, flexibility and universal access. Increased speed is a critical requirement for 4G wireless services to be successful. Data-rate increases of 10-50X over 3G will put streaming audio and video access into the hands of consumers. Each wireless generation demands a much richer set of wireless features.
CONCLUSION
4G: Anytime, Anywhere Connection
Also known as ËœMobile Broadband everywhereâ„¢
MAGIC
Mobile Multimedia Communication
Anywhere, Anytime with Anyone
Global Mobility Support
Integrated Wireless Solution
Customized Personal Service
According to 4G Mobile Forum, by 2008 over $400 billion would be invested in 4G mobile projects.
In India, communication Minister Mr. Dayanidhi Maran, has announced a national centre of excellence to work in 4G arena.
