Two of the most popular communication concepts in China in 2009, one is 3G and the other is FTTX. Combining these two concepts, the wireless fiber coverage system (or wireless signal FTTX, or RF-FTTX) developed by Wuhan Shenghua Microsystems Technology Co., Ltd. combines the two perfectly. The biggest feature of this system is the use of fiber access to achieve indoor coverage of the super 3G.
Annoying 3G indoor coveragePreviously, telecom operators have built a large number of indoor coverage systems. However, the traditional indoor coverage system design is based on the needs of 2G networks, and the focus is on meeting the coverage requirements of voice and low-speed data services.
However, with the rapid development of IP RAN and the accelerated and mature deployment of B3G technology, new indoor coverage systems are urgently needed to carry 3G services. According to relevant statistics, more than 70% of 3G services occur indoors. The competition around the family space will become the key to the competition of operators.
Judging from several existing indoor coverage solutions, networks of various standards are converging. The flexible networking mode of the BBU+RRU has become the first choice for operators. China Unicom intends to introduce the concept of femtocell, which uses the advantages of smart antennas for space division multiplexing, and the network of telecom 800Mhz has natural advantages. However, these kinds of coverage methods have some difficulties in cost control, engineering construction, operation and maintenance, etc.
Wireless fiber coverage: a fusion solution between FTTH and 3GXiao Haiqing, director of Wuhan Shenghua Marketing, said that the company launched this product, it is found that the solution in the existing network can not fully meet the huge demand of the market. Is it possible to simplify the application scenario of the fiber optic repeater and use it indoors? Wuhan Shenghua is already the largest supplier of optical modules for fiber optic repeaters in China.
The scheme uses a micro power base station or RRU as a signal source, uses intermediate frequency transmission as the technology core, and uses optical fiber as a transmission medium for signal transmission and distribution, which greatly reduces the difficulty of the traditional electric distribution mode in system design and construction. At the same time, the program also makes full use of the access resources of FTTH.
"Wireless is always limited, and cable will be infinite. Wireless fiber indoor coverage system can basically ignore the bandwidth problem of access. It can provide some services with high bandwidth requirements while meeting the traditional 3G service bearer, for example. Wireless IPTV.†Xiao Haiqing said so.
However, the cost of FTTH is still more than a thousand dollars, and there is no large-scale promotion at present. However, with the maturity of 10GEPON and NGPON, the home access bandwidth is not far from 8M.
Still need scale pilot verificationSimply looking at the problem from the market outlook and technology itself is always pale. It is not appropriate to draw conclusions before successful scale applications.
The first is the network planning optimization problem brought about by scale application. This problem cannot be avoided in the construction of China Unicom's femtocell. The structure of modern family homes makes it easy to generate network interference in adjacent areas, thus affecting the user's 3G experience. In this regard, Yang Guomin said that Wuhan Shenghua's products can adjust the transmission power of the equipment freely through the built-in remote control chip, and then adjust the network coverage. Its very low power design, although it reduces the penetration, it also avoids the problem of inter-network interference.
Secondly, the topic of network security, due to the use of wireless fiber coverage, which enables it to achieve carrier-grade Q0S, but must address the identity authentication problem of access users. Yang Guocheng honestly does have such a problem now, but by introducing the concept of sensor network, the unique certification of the equipment area can still solve this problem. However, this will increase the cost of the device and will also reduce the user experience.
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