5.8GHz broadband wireless access technology introduction
As the Radio Management Bureau of the Ministry of Information Industry officially opened the 5.8GHz band for high-speed wireless LAN access in 2002, 5.8GHz broadband wireless access technology is becoming a new application area and a new market growth point. At present, domestic operators mainly rely on laying optical fiber lines or renting DDN for the opening of the last mile of broadband access. In this way, first, the opening period is long, and second, the construction cost and cost are high. Although the national regulatory agency has opened the 3.5 GHz frequency band for data access in some cities, the two-way system working in the 3.5 GHz frequency band is expensive, and it has been difficult to promote it on a large scale so far.
Compared with the 3.5GHz wireless access technology, the 5.8GHz broadband wireless access method has the characteristics of low equipment cost, easy installation, and low construction cost, which is beneficial to large-scale popularization and application. At the same time, according to the current national plan for the 5.8GHz microwave frequency band, this frequency band is mainly used by basic telecommunications operators for public data access network construction. Users must apply to the non-committee for approval before using it, which avoids the current Frequency interference caused by the large number of users in the 2.4GHz band. For these reasons, 5.8GHz broadband wireless access has become one of the ideal solutions for the last mile broadband access.
In response to the needs of 5.8GHz outdoor broadband wireless access applications, Sunet specially developed and designed the SWR5800 series 5.8GHz broadband wireless access system. Sunet 5.8GHz broadband wireless access system is designed to meet the large-capacity access requirements of ISPs and campus network service providers. Its main feature is to provide multiple wireless interfaces at the same time, using sector coverage to provide multi-user large-capacity IP access. It has the functions of user authentication, access service control and dynamic IP address allocation required by ISP. The 5.8GHz outdoor wireless bridge is the core device for building a 5.8GHz broadband wireless access system. It has the function of a bridge. At the same time, it can implement firewall interconnection, routing, address and protocol filtering and other functions to meet large networks and ISP Access requirements.
SWR5800 broadband wireless access system works in the 5.725 ～ 5.850GHz wireless microwave frequency band. The product supports high-performance long-distance wireless data communication and can be used for outdoor point-to-point and point-to-multipoint wireless networking. It can connect multiple wired LANs distributed between different buildings by radio frequency, and supports wireless including Internet access and wireless VoIP, VPN, VOD on-demand, remote monitoring and other wireless value-added services. In addition, in order to meet the needs of long-distance wireless communication of more than 30 kilometers, Sunet has also developed a high-performance power amplifier, which can be used in conjunction with SWR5800 series 5.8GHz broadband wireless access products.
SWR5800 broadband wireless access system has superior performance characteristics in wireless IP networking and wireless interconnection of IP networks, especially in achieving broadband wireless IP access. The product is completely based on IP technology, supports 40-bit and 128-bit WEP encryption, and provides Windows-based management tool software. The product adopts a comprehensive outdoor waterproof design, supports a 19-inch standard rack, and can be powered by Ethernet. Easy to install and deploy. The product can provide a bandwidth of more than 11Mbps, and can be extended to 54M, which can meet the growing needs of users for broadband access at present and in the future. As the product adds IP networking and routing functions, it can use mature IP management, security, filtering and other technologies to enhance wireless channel access management and control, and improve the security and controllability of wireless channels. At the same time, it greatly improves the scalability, transmission efficiency and security of the broadband wireless network. It can logically divide a single wireless interface into multiple IP network interfaces, providing a wider geographical area and more complex networking conditions. Wireless connection between IP networks under the network, and can easily provide network security functions such as IP address filtering, firewall and so on.
The 5.8GHz broadband wireless access system is composed of a network management system, base station equipment (AP), and remote station equipment (RU). The device has a layer 3 routing function that can be centrally controlled and maintained, and has an easy-to-use graphical user interface. User management and bandwidth management can be performed. Each wireless network management system and central device can support the connection of 253 user-end devices, and new user-end devices can be added with built-in bandwidth management. The typical application distance is 5-8 km, the highest Up to 50km. The 5.8GHz outdoor wireless bridge can be used as a base station device, networking in a multi-sector way to achieve air connection and data transmission with the user-side wireless bridge, providing user identity verification, alarming and maintenance functions. The SWR5800 user-side wireless bridge can be used as a user's equipment room. It supports the RF connection between the central base station and the user's network. It has the characteristics of easy installation, fast communication, safety, and flexibility.
The network management system can provide network operators with support for system operation and maintenance, mainly including user management functions and network security functions. User management function can implement user management, bandwidth management and operation and maintenance management, charge and manage users in a wireless environment, and support distributed or centralized user management; network security functions can implement encrypted transmission, firewalls, and Internet Interconnection, routing, address and protocol filtering, MAC address locking, TRAP IP function. Use firewall software on the wireless network access management system, select firewall and application layer encryption to fully ensure the security of the network system.
Sunet 5.8GHz broadband wireless access can be used as an important technical means for enterprise and campus network construction, metropolitan area network interconnection, suburban network access, private network construction and mobile base station access network construction. The goal is to provide emerging telecommunications operators and wireless service providers with a low-cost method to achieve last-mile broadband access. The product enables service providers and end users to achieve wireless Internet connection on the 5.8GHz microwave frequency band. The data transmission rate is 11Mbps or 54Mbps, which can meet the needs of various types of data communication. Including from simple Internet access to business-related multimedia functions, such as simultaneous support for voice calls, video, audio and file transfer. The product is not only suitable for the emerging network operator ISP to compete with traditional telecommunications companies, but also as an important supplement to the wired access of telecommunications companies.
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