To meet the requirement of rapid network construction and solve the problem of limited frequency, Datang Mobile launched A+B dual frequency band single port RRU: TDRU312. It is the unique product which supports dual frequency band and meets hybrid networking requirements. As a result, it can bring long-term benefit with only once investment.
By deploying A+B dual frequency band RRU (TDRU312), network can be completed by once construction. During network expansion period, only BBU processing unites are needed without changing RRU. The construction with TDRU312 only needs one optical fiber, one power line, one installation point, one time wiring and one time construction( so-called “five one”). Moreover, the deployment of TDRU312 also can save space, supporting materials and labor-hour. It will save 60% cost than separate frequency band products. Taking a medium city with 3000 deployment point for example, it will save 3 million RMB supporting materials.
After the release of 3G licenses, Bureau of radio, Minatory of Industry information Technology, publics 3G frequency bands for 3 main operators: 1880-1900MHz&2010-2025MHz for China Mobile. 1880-1900MHz belongs to A frequency band (1880-1920 MHz), and 2010-2025MHz is B frequency band.
Because indoor users’ signals are mainly emerged from indoor distributed systems, considering Space Division Multiple Access, current B frequency band indoor distributed system can only support 7 data cards with the speed of 512K, which is far away from the requirements of the explosively increasing data card users. As high speed data service is the leading direction of future communication development, TD-SCDMA which is one of the three main standards applied domestically is much better at data services than GSM system. According to some investigation, 70% data services are generated indoor, so the most imperative aspect is how to improve indoor users’ experience. As a result, Datang Mobile releases A+B Dual Frequency Band Single Port RRU: TDRU312, which will dramatically improve user experience and TD-SCDMA competitiveness.

As a leader of TD-SCDMA equipment supplier, Datang Mobile constructed networks in 15 cities (e.g. Shanghai, Guangzhou, Hangzhou, Ningbo, Lanzhou) in Phase I and Phase II. During the network construction, Datang Mobile cooperates with ASB ( Alcatel Shanghai Bell), fully taking each other’s advantages to enhance marketing capability in order to meet China Mobile’s requirements of large-scale network construction, promoting TD-SCDMA development.