Dual-Layer Broadband Wireless Access for low-cost, high-performance network construction

The proposal of Double-Layer Broadband Wireless Access improves the wireless access and fixed wireless access of mobile terminals in fixed areas. For low-cost and high-performance architectures, the concept of dual-layer broadband wireless access has become a new design concept.

Fixed broadband wireless access technology, this emerging access method is rapidly gaining popularity due to its fast construction cycle, low initial investment, high transmission rate, and rich business types. However, the system is still in the category of fixed access, and its terminal stations cannot be moved. End Users still need to connect to the terminal of the system through traditional cables, hubs, switches, routers, etc. In addition, in terms of price, a fixed broadband wireless access terminal station is relatively expensive and is not suitable for individual or individual users to use independently. In terms of access rate, A terminal station can provide a speed of several megabytes or even ten megabytes. At present, ordinary families and individual users cannot afford such consumption economically. Therefore, although the current Broadband Wireless Access System can be technically connected directly to the desktop. However, in practical applications, it is not suitable for most users to provide wireless connections directly to the desktop.

In response to the above problems, hongxin Company of Wuhan Institute of Posts and Telecommunications, based on the actual situation of Radio Management in China, combined with the radio network products developed by itself over the years, in addition, in cooperation with VYYO, the company proposed a wireless access solution that can completely connect to the end user's removable Internet access. This solution does not require heavy fiber and twisted pair wires, so you can enjoy surfing the Internet from anywhere.

The solution uses a dual-Layer Broadband Wireless Access Network (1), which divides wireless access into macro and micro cells. Macro Cell is equivalent to ITU-T defined access network (AN); micro cell is equivalent to the user site Network (CPN ). The macro-cell operates at a higher frequency band of 3km GHz or up to 40 GHz. The radius ranges from 35km to according to the working frequency band, forming the core infrastructure of the wireless access system, that is, the traditional LMDS system. Macro cells are divided into several micro-cells according to the actual needs of the market. These micro-cells work in the open GHz band (this band is the ISM spread spectrum application band defined by the global radio regulatory entity ), the coverage radius is 80 ~ 500 m.