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IDG News Service

3G in China: one country, three standards

Steven Schwankert, IDG News Service09.11.2008
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If China Mobile made any splash as a top-level sponsor of the Beijing Olympics, it was for its limited deployment of TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) 3G (third-generation) telephony service in the Olympic cities, except Hong Kong.

TD-SCDMA is one of numerous Chinese efforts to establish a technology standard that will be adopted both domestically and internationally. Both the Chinese government and the local technology industry bristle at the idea of continuously paying royalties to foreign technology patent holders. Several such efforts -- including EVD (enhanced video disc) and WAPI (WLAN Authentication and Privacy Infrastructure) -- have failed to gain adoption even in their home market.

However, TD-SCDMA will achieve at least some success with China Mobile backing it as its 3G standard. The math for such a strategy works: If even 10 percent of China's total mobile market starts using TD-SCDMA phones, that's about 60 million users. TD-SCDMA could therefore achieve reasonable success without a single foreign user.

Despite strong government support for TD-SCDMA, China's telecom regulators and rival operators have found a way very quietly to accommodate international 3G standards. By allowing China Telecom and China Unicom, China Mobile's newly-integrated rivals, to use CDMA2000 and WCDMA (Wideband Code Division Multiple Access), respectively, those operators can differentiate themselves.

Not everyone is convinced. "The U.S. had competing technologies including analog, CDMA, TDMA, GSM/PCS and iDen/Nextel to name a few. Poor coverage and retarded growth was the result. Not encouraging," said Duncan Clark, chairman of BDA China, a Beijing-based telecom investment and research firm.

Using three standards solves political questions, but will the concept of one country, three 3G systems work?

"If a multi-system approach makes sense for any market, it is China. The sheer size and diversity of the country makes it the ideal track for a horse race among competing systems," said David Wolf, CEO of Wolf Group Asia, a Beijing-based consultancy. "One reason China's multi-system approach makes sense is as a means of arresting subscriber churn. Because China's handset market is retail-driven, if all carriers are on the same type of system, it is easier to switch from one carrier to another. With switching so simple, the industry would rapidly devolve into a costly marketing war over users."

China's Ministry of Industry and Information Technology (MIIT) has yet to issue 3G licenses, but it's a done deal. China's three telcos will each get one, while foreign providers remain barred from operating in the country.

There is also no official timetable for the official launch of commercial 3G services in China, although China Mobile began pushing TD-SCDMA sign-ups during the Olympics, and phones for a new, larger trial were just delivered this week.

Despite China Mobile's size, TD-SCDMA as a new and incompatible technology could be both an advantage and a challenge for the carrier. "[China Mobile] can exploit [TD-SCDMA] by at least getting a head start on building out new towers and core infrastructure for 3G, hopefully they can go LTE (Long Term Evolution) and quietly dump TD-SCDMA in the future," Clark said.

Both Wolf and Clark agreed that the Chinese government would offer long-term support for China Mobile's TD-SCDMA efforts.

"China Mobile is being given a long runway by the government. It will be months before the other two networks will be up and running, both because of the engineering effort required to procure, install, test, and start up a 3G network and because of the disruption caused by the reorganization of the industry," Wolf said.

China Mobile was likely to use TD-SCDMA to "win sympathy and subsidies from the government," Clark said.

Although the new standard and its standard bearer may find the initial going difficult, discontinuing its use is unlikely. "Dumping the system altogether is and would be all but politically impossible. I suspect that even if the TD-SCDMA network turns out to be technically unworkable, it will remain operational


Comments

TD-SCDMA is not new and it is not incompatible.
TD-SCDMA was accepted in the year 2000 as an international standard by ITU, and it is recognized as the UMTS-TDD Standard by 3GPP. TD-SCDMA was successfully demonstrated in a first field trial in 2001, and since that time, Chinese companies had built up the industrial supply chain, with support from Siemens, Alcatel, ... TD-SCDMA is designed to operate complementary to existing GSM networks, as well as W-CDMA networks (UMTS-FDD). TD-SCDMA (UMTS-TDD) offers significant cost advantages compared to W-CDMA (UMTS-FDD). TD-SCDMA is specified as a solution for approx. 100 network operators around the world with UMTS-TDD licenses already granted. The evolution path to TD-LTE is already established - so no need to dump TD-SCDMA !


High compatibilty:
Apart from the Radio Access Network (NodeB, RNC), TD-SCDMA infrastructure is identical with W-CDMA - but it provides better performance with asymmetrical Internet traffic. In the product solution available from TD Tech (Nokia Siemens Huawei Joint Venture), you can even set up a mixed RAN with TD-SCDMA NodeB and W-CDMA NodeB connected to the same RNC, with NodeB site sharing. Site sharing GSM BTS / TD-SCDMA NodeB is standard routine for >15,000 sites in China.
So in the near future, European operators could utilize existing, but still unused UMTS-TDD spectrum by shifting IP traffic to TD-SCDMA infrastructure. Further interesting option: TDD femtocells -> network planning less complex. Everything within a standard 3GPP UMTS infrastructure.


"limited deployment":
In preparation for the Olympic "trials" with 60,000 sponsored subscribers, China Mobile (CMCC) deployed 15,000 TD-SCDMA sites in 10 metropol areas until summer 2008, including upgrade to HSDPA 2.8 Mbps. To improve coverage in the first 10 cities, deployment is expanded to 18,000 sites until end 2008. Currently bidding is in progress for phase 2 of TD-SCDMA network construction covering 38 cities with approx. 50,000 sites (total network) by mid 2009. After network optimization, this would provide capacity for some 100 mln TD-SCDMA subscribers in China.
More details: http://www.rudolf-appel.de/td-tech/
A limited number of TD handsets from Chinese manufacturers are not yet tested ready to satisfy subscribers and "look like the kind of phone used by a village cadre.” But a good variety of stylish TD handsets is available from renown suppliers such as Samsung, LG, Lenovo, Hisense, ZTE, ... typically TD-SCDMA dual mode with GSM triband or quadband, as well as HSDPA data cards for notebooks. With the ramp-up of handset sales, we can expect that this first generation of user equipment will be refined and improved - just a repetition of GSM "God Send Mobiles!".


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