To participate in organize the dubai communication show "TD - LTE and spectrum conference", and communicate with many people just return to China after the td-scdma LTE development experience of TD industry association secretary-general Yang Hua, an interview with this newspaper clearly with the TD - LTE excited spectrum planning this good news.
"The conference on the latest development of TDD spectrum was initiated by the TD industry alliance. Although technically have implemented the basic synchronization, but in the FDD LTE this year, in a multinational to realize commercial TDD or the use of frequency spectrum and planning and FDD has formed a larger gap, Europe early planning of the FDD LTE spectrum, so many areas will be reference for Europe to LTE spectrum distribution. We have had a lot of communication with the ministry of industry and information technology, and also contributed to the acceleration of the TDD spectrum strategy by the ministry of industry and information technology. This time China's policy on TDD spectrum will also provide lessons for many countries to plan TDD spectrum.
China announces the need for LTE planning
When asked about what factors contribute to the Chinese government announced on the show in dubai communication spectrum policy TDD, Yang Hua, according to the ITU's exhibition is telecommunication union communication between government, more reflects the policy regulation, emerging market development trend, for operators and the government leading role. So at the dubai communication show, governments around the world have expressed great concern about the development of LTE. Among them, the FDD LTE earlier access to commercial, two years before the td-scdma LTE and FDD has the obvious difference, but obviously feel the gap this year, already can provide large-scale network support ability and the service, commercial terminal products have come, it is necessary to further promote the td-scdma LTE technology application and promotion, and allow the public to understand the td-scdma LTE's ability to support mobile Internet.
"On the other hand, in terms of the development of LTE spectrum planning, China has made a significant difference in the planning of LTE spectrum, and it is necessary for China to put forward its own planning plan on LTE. The head of China mobile introduced the existing td-lte test and announced plans to build and plan on LTE for the next one to two years, which has also attracted international attention.
In addition to all countries in the 2.5 GHz to 2.5 GHz frequency band out for international roaming band support TD - LTE globalization basic reached a consensus, TD union also suggested that more equipment and products to "multimode scheme", guarantee the roaming between different technical standard.
2.6GHz and wide coverage
For TDD's 190MHz band, the industry's first reflection is that "abundance is unprecedented". Yang Hua said that 4 g standard three, in addition to the prospect of WiMAX is hard to predict, the td-scdma LTE, FDD LTE will usher in large-scale development, in the vast Chinese market, two operators in the three development of td-scdma LTE is also reasonable.
"It is also sufficient to support three carriers to develop LTE from the resources of this 190M spectrum."
The positive news of the 2.6GHz spectrum scheme has also raised concerns about the inability of some people to reach a wide coverage of the high band bandwidth. According to Mr Yang, radio penetration and diffraction ability are related to spectrum, but in practice the spectrum of the spectrum is to be used. ITU when planning spectrum, the 2.6 GHz as LTE main frequencies, because of the high rate of the business needs of the large capacity takes place mainly in indoor, Japan and Europe has 80% of high-bandwidth data occurred in indoor, urban populated areas, highly commercialized and better educated area is data business focus areas.
"To ensure the high speed of each user, the radius of the community will be very small. In the world, where LTE is already commercially available, many carriers have adopted a small honeycomb solution, which has been well planned for 2G/3G/ 4G. 2G is responsible for extensive coverage, 3G is responsible for major urban areas, and LTE is supporting data business in hot spots. Although the LTE rate can reach more than 100 mbit/s, but the user asked to rate each number of users in the community can't be much more special, a small area covering 500 users would enjoy high rate. So small sectors are less sensitive to spectrum. High frequency spectrum is particularly suitable for data transmission within a visual range.
