re: SKT speaks on 1xRTT
Thanks to Ben Garrett on MQ thread for the link.
Numbers look good.
Field tests of the cdma2000 1x system in the south of Seoul conducted in March this year indicated an average data rate of 71kbps.
>> Korea's 3G Coverage to Reach 88 Pct. by Year End
June 18, 2001
Keith Chan
Asia BizTech
nikkeibp.asiabiztech.com
Since its commercialization in October 2000, the third-generation mobile network deployed by SK Telecom Co., Ltd. in Korea has expanded to cover 68 percent of the country's population by the end of April 2001, according to Chang M. Han of the Access Network Development Team, Network R&D Center of SK Telecom.
Speaking at the 3G World Congress held in Hong Kong on June 14, Han said the cdma2000 1x system now covers more than 20 cities in the country, including Seoul, Inchon, Taejon, Kyonki, Pusan, Taegu, Ulsan and Kwanju. By the end of this year, the system will be extended to 88 percent of the population in 81 cities, as well as to subways in the major cities.
Han said by end of April, system infrastructure deployed included seven mobile switching centers, 1,117 base station controllers, and 184 subway BTSs supplied by Samsung Electronics Co., Ltd. By the end of this year, the total would increase to 18 MSC, 1,774 BTSs, and 189 subway BTSs.
The cdma2000 1x system deployed by SK Telecom features a maximum transfer speed of 153.6kbps, compared to 64kbps offered by the IS-95 A/B system (also known as the second-generation mobile system). It uses the same QPSK (quadrature phase shift keying) technology for downlink modulation, and is backward compatible to IS 95 A/B system.
According to Han, field tests of the cdma2000 1x system in the south of Seoul conducted in March this year indicated an average data rate of 71kbps. The data rate varied depending on the environment. In 34.5 percent of the coverage area, the data rate reached 80kbps to 160kbps. The range was 64kbps to 80kbps in 15 percent of the area, 48kbps to 64kbps in 14.3 percent of the area., and 32kbps to 48kbps in 11.5 percent of the area. In 16.7 percent of the area, the rate was below 8kbps.
The field tests also indicated that the cdma2000 1x system showed a 1.5 times to 2 times increase in voice capacity compared to the 2G system. There was also a two-time increase in standby time of handset (to over 50 hours) by reducing the wakeup time, but a 10-20 percent decrease in talk time (to about 2 hours).
Han calls on the operators of all cdma2000 1x system around the world to cooperate in areas such as data scheduler and handoff algorithm, the optimization of target supplementary channel frame error rate and new parameters relevant to data service. He said most importantly, the operators should seek ways to make huge revenue out of the data market, such as point-to-point video service and high-speed broadcast service.
Speaking at the same occasion, Dong-soo Park, senior manager of Samsung Electronics, said since last October the company has deployed more than 1,500 cdma2000 1x BTS for two operators, and another 2,700 BTS will be deployed in the southern part of Korea.
Park said field tests in April indicate that for voice communication, call success rate of cdma2000 1x averages 98 percent, and the call drop rate is 1 percent; and for data communications, the call success rate is 98 percent, the initial connection is 6 seconds, and the call drop rate is 1 percent. These data are comparable to the 2G system.
He said apart from the cdma2000 1x system, the 1x EV-DO system is now being tested, and is expected to be available for commercial service in September 2002. This system will offer a data rate of up to 2.4Mbps, with improve packet performance. In addition, the company is also developing the 1x EV-DV system which offers a maximum speed of 5.2Mbps. Targeted at multifunction and multimedia services, this system will be developed from end of 2002, and commercial service is expected in 2003. <<
- Eric - |
