Showing posts with label TDD. Show all posts
Showing posts with label TDD. Show all posts

Tuesday 6 November 2007

TD-MBMS ready to roll out


Spreadtrum Communications Zhongxing Telecommunication Equipment (ZTE) have announced that the ZTE R&D Centre (Shanghai) has demonstrated TD-MBMS network services using Spreadtrum's TD-SCDMA/GSM/GPRS dual-mode chipset solution.

As a new TD-SCDMA multimedia service, TD-MBMS targets the mid to high-end segments of the 3G mobile market. TD-MBMS is now technically feasible on the TD-SCDMA network built using ZTE's equipment. With the adoption of Spreadtrum's SC8800D TD-SCDMA/GSM/GPRS dual-mode chip and platform, TD-MBMS could be applied to mobile phones, providing smooth images and clear sound. This successful demonstration of MBMS based on the TD-SCDMA standard indicates that the TD-MBMS technology is ready for commercialization.

This new TD-MBMS development is another step in the joint commercialization of TD-SCDMA by Spreadtrum and ZTE, following the strategic partnership agreement between Spreadtrum and ZTE announced on August 29, 2007. Dr. Datong Chen, CTO of Spreadtrum, said, ''We are very pleased to be a part of ZTE's successful demonstration of the industry's first TD-MBMS services. We believe this not only enriches the growing level of 3G TD-SCDMA multimedia services, but also enables TD-SCDMA mobile phones to satisfy the diverse requirements of its targeted users. In addition, Spreadtrum's TD- SCDMA/GSM/GPRS dual-mode chip and platform can equip the handset manufacturers with competitive technical advantages of TD-SCDMA mobile phones." Mr. Yuhong Duan, ZTE's General Manager of TD products, said, ''ZTE has been focused on the research and technical evolvement of the TD-SCDMA standard for several years, and it is the first to support TD-MBMS on the system side in the industry.

Thursday 28 June 2007

3G in 900MHz band can make 3G a winner


The widespread deployment of 3G networks in the 900MHz GSM spectrum band, as well as the 2100MHz band, could enable an additional 300 million people across Asia, Europe and Africa to enjoy mobile broadband services by 2012, according to a study by the analyst and consulting company Ovum for the GSMA.
Note: HSPA is already being deployed at 900MHz in Finland and trials are underway in a number of other countries, such as France and the Isle of Man. More about this is available here.
In 900MHz, the greater range of radio waves in the lower spectrum band and their ability to provide better coverage in buildings would enable operators to achieve much broader 3G coverage, particularly in rural areas. The study shows that a 3G network in the 900MHz band would achieve up to 40% greater coverage than a 3G network in the 2100MHz band for the same capital expenditure.
The cost-effectiveness of 3G at 900MHz would be of particular significance in developing countries, many of which are looking to HSPA, an evolution of the leading 3G technology, to provide high-speed Internet access in the many regions that lack fixed-line infrastructure. However, Ovum cautions that the level of success of 3G in the 900MHz band will depend on multiple countries making this spectrum band available in a harmonised way, so that equipment manufacturers have a large market to target and can quickly achieve economies of scale, particularly for handsets.
Ovum envisages that operators would use 900MHz to provide widespread 3G coverage, supplemented by 3G at 2100MHz in urban ‘hot-spots’ that need more capacity. The extensive use of both the 900MHz and the 2100MHz bands for 3G in Asia–Pacific countries could lead to 450 million people in the region using 3G by 2012, if all operators chose to deploy 3G and the majority of investment goes into 3G at 900MHz. If 3G were restricted to 2100MHz alone, Ovum forecasts there will be just 200 million people using 3G in the region by 2012.
In light of these findings, the GSMA urges regulators, together with vendors, to plan together for the coordinated refarming of 900/1800MHz spectrum, which is widely used for GSM in Europe, Asia and Africa, and for the availability of compatible and affordable handsets. Such global planning will give investors the confidence to fund the development of 3G/HSPA at 900MHz and 1800MHz as well. There should be no differentiation between the different GSM bands (900/1800/1900) to avoid any distortion of competition among GSM operators. The same benefits would also be achieved by refarming 850MHz spectrum (widely used in US and Latin America).
According to the Inquirer, the GSMA may have fallen into a trap. China has its own flavour of 3G – called TD-SCDMA. One of the benefits of this standard – compared to W-CDMA which the GSMA promotes – is that it shares infrastructure costs with existing GSM equipment. Naturally providing cost savings. So while the GSMA is admitting that standard W-CDMA at 2100 MHz is too expensive for developing economies, China can quite reasonably say, "We know. That's why we've stuck with TD-SCDMA.
A bit of an own goal really.

Friday 25 May 2007

China getting serious with TD-SCDMA


China is getting serious with its TD-SCDMA standards and would like some major players in 3G to signup and appreciate the standards. The Chinese government is keen to have a standard made in China to be used (atleast in China). The government is holding off the auctoning of 3G spectrum untill they are sure that TD-SCDMA is ready and there are enough handsets available for the people.
'Foreign companies need to get serious about TD-SCDMA as they are less likely to get anywhere with WCDMA and CDMA 2000 in the near future,' warned Haofei.
This is despite the fact that 2 weeks back Bloomberg had an article stating that China has adopted WCDMA and CDMA2000 as two other official 3G technologies except TD-SCDMA. The popularity of these two would depend on the success of TD-SCDMA.
China's 3G handset sales are projected at 22 mln units by 2010, Zhao Hong, a senior official with the TD-SCDMA Industry Alliance and an executive director with Lenovo Mobile Communications said at a conference.

Zhao said that handsets configured for China's homegrown TD-SCDMA standard are expected to account for 50 pct of 3G sales, while WCDMA handsets will hold 40 pct and CDMA2000 handsets will account for 10 pct.