3g Indoor Coverage Analysis: WCDMA micro-cellular base station to achieve perfect indoor coverage

With the rapid development of mobile communication, it becomes more and more important to solve the problem of indoor cover and capacity, and the micro-cell base station becomes an important means to improve the indoor coverage effect and to increase the special area capacity.

The importance of 3G indoor coverage

Good network coverage, especially indoor coverage is the key to the success of 3G, NTT DoCoMo is a good example: NTT DoCoMo found that the user's indoor usage accounted for 70%, and outdoor usage is only 30%, because of 3G video telephony, video streaming, High-speed data services such as games occur in a comfortable indoor environment, and these business functions require large system capacity and good network quality.

NTT DoCoMo adjusted the network and wireless coverage strategy, began to implement a large number of indoor solutions, in March 2004, the number of indoor sites expanded to 1600, ahead of the original indoor construction plan for several years, including many micro-cellular and indoor stations, and connected antenna distribution system, To achieve business buildings and subway stations, such as indoor environment good coverage.

Technology-leading micro-cellular base station

Shanghai Bell Alcatel WCDMA Micro-cellular base station adopts an independent structure, flexible installation, both for airport stations, commercial centers and other indoor high traffic hot spots, can also be installed in special areas according to demand, low-cost, high reliability to meet the needs of operators to deploy indoor solutions. (Computer science)

• Provide flexible configuration scheme, support 3 sectors, each sector can achieve 3 WCDMA carrier, can effectively solve the traffic hot area capacity problem.

• Using the latest predistortion technology, so that the efficiency of the power amplifier is significantly increased, to more than 12%, the low-power consumption, low power design reduces the internal fan, external power supply and other equipment requirements.

• Low power design improves the stability and long-term reliability of micro-cellular devices, thus reducing operating costs. • Modular integration, small equipment, flexible location, easy installation, can adapt to a variety of construction environment, to meet the needs of rapid deployment operators, optimize the operator's investment.

• Support for indoor and outdoor installations that can be conveniently fastened to walls or hold poles.

• Each micro-cell base station in the factory before the completion of the factory testing, can be quickly installed open, easy expansion.

• Provide a wide range of antenna connections, support built-in directional antenna, external omni/directional antenna, can be connected to a distributed antenna system or leakage cable to achieve good indoor coverage.

• Receiving sensitivity up to -127dbm, maximum output power up to 8 W.

Rich experience in indoor coverage

Currently, Alcatel provides GSM micro-cellular indoor solutions for many operators around the world, such as the UAE, Singapore, Indonesia and other countries, such as: In the UAE capital Abu Dhabi, Alcatel through the site survey, with operators for more than 50 buildings (shopping malls, hotels and offices) to provide indoor coverage, Network optimization, accumulated a large number of indoor coverage experience. In Shanghai, China, dozens of continuously distributed GSM micro-cellular base stations, deployed by Alcatel Shanghai Bell, have eased the traffic congestion caused by large numbers of passengers at Shanghai Hongqiao Airport terminal, and improved network quality and customer satisfaction through daily wireless network optimization.

Since the NTT DoCoMo has the world's largest WCDMA commercial network, has deployed nearly 2000 indoor sites, last February Alcatel and NTT DoCoMo Engineering Company signed a 3G cooperation agreement, reached a partnership, Alcatel obtained WCDMA indoor coverage of the site firsthand information , and has accumulated rich experience in indoor coverage and micro-cellular network optimization. Based on the service agreement with the NTT DoCoMo, Alcatel can help other operators share Nttdocomo experience.