At the "2013 China LTE Industry Development Summit" held recently, Zhang Yongsheng, chief researcher of Como (Beijing) Communication Technology Research Center Co., Ltd., shared the LTE commercial experience of Japanese mobile operator NTT DOCOMO.
At the meeting, Zhang Yongsheng said: "At present, DOCOMO has 14 million LTE subscribers in the entire network, accounting for about 25% of all subscribers. From the perspective of subscriber development, the entire LTE network is growing rapidly. Observing the DOCOMO's network deployment process, A very significant difference was found. If based on 12 million users, DOCOMO pushed WCDMA from 2011, reaching 12 million users for a total of five years, while LTE took only two years.â€
It is understood that the number of DOCOMO LTE base stations reached about 30,000 in June this year. DOCOMO plans to increase its deployment of LTE base stations to 50,000 by March 2014 and achieve full coverage in Japan. At present, 75Mbps base stations are DOCOMO's mainstream deployment base stations, which have reached 17,300 by June and are expected to reach 25,000 in September this year. Another 112.5Mbps high-speed base station has covered 130 major cities in Japan by June and will increase to 150 cities in September this year.
In addition, since July 30th this year, DOCOMO has pre-commercially deployed 150Mbps high-speed LTE, and plans to begin formal deployment of 150Mbps LTE in major cities in Japan from October this year. According to a survey conducted by a third-party consultancy, DOCOMO ranks first among Japanese operators in both LTE network coverage and speed.
Zhang Yongsheng said: “The development of the terminal is the key factor for the ecological environment of the entire industry. After DOCOMO started commercial LTE in 2010 and until December 2011, DOCOMO only had one data card for the FDD terminal. By 2011, In the first half of the year, the terminal form was mainly based on data cards plus one or two customized terminals, and the entire situation changed in the summer of 2012. DOCOMO’s terminal promotion was basically one year in spring, summer and winter. To be released, it will reach 100% LTE in the fall of 2012, which is a sign of the maturity of the entire LTE."
When talking about the common problem of fragmentation of the frequency band in the global LTE deployment, Zhang Yongsheng believes that this requires the efforts of the entire industry chain and the need to promote the development of multi-band terminals. “From a global perspective, fragmentation of the LTE frequency band is already an unavoidable reality. This reality poses a great challenge to the global operator's network deployment. The situation in China is much better than in Japan. In Japan, currently There are about six to seven bands. Only through the promotion of the entire industry chain can we achieve seamless LTE services. From the aspect of DOCOMO, we can well reuse the existing 3G frequency band for LTE."
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