Research On Rural Broadband Wireless Access Solutions

Currently, internet business development rapidly, urban residents are mostly using ADSL and cable broadband. But for rural residents living scattered and coverage area is larger complex terrain and wired line basis difference, which is difficult to investment and the cost which is too high and the project can’t guarantee the quality and comprehensive coverage. Because of wireless WLAN technology mature gradually, access devices, tend to be perfect, use the wireless network technology for wireless coverage, became effective rural broadband network access. According to the characteristics of the distribution of rural residents, wireless access can be used in two ways: XPON + WLAN way, way of PTN + WLAN.XPON + WLAN method uses the network technology and wireless local area network(WLAN) technology. For general area, the wireless access point AP part can be directly connected to the ONU. Wireless access point AP populated areas, through a network switch after access ONU. This applies to user more scattered empty area(rural), cable access resource-poor Settings.PTN + WLAN transmission channel is the mode selection PTN transmission system of the Ethernet interface, IP metropolitan area network through the Ethernet interface to connect with PTN transmission network, the IP broadband metropolitan area network signal to the rural village head, mobile base station using WLAN equipment according to the 2 g and 3 g wireless overlay network coverage deployment. Public frequency 2.4 GHZ and 5.8 GHZ two frequencies can be used. Wireless AP after POE switches connected to the PTN transmission network link, the uplink receiving IP metropolitan area network. PTN + WLAN mode is suitable for the mobile communication base station has opened the area of PTN transmission network, more suitable for the decentralized, cable network layout of the rural.According to the wireless access technology to use different scenarios can choose different ways of networking, wireless access technology to establish a connection and billing, certification and passive optical network(PON) same PPPOE broadband access. Advantage is convenient and business management.This paper, by using the wireless broadband access way experience for Ba jiazi, Majia, Yu Shutai in Si ping area, analyzes the project investment cost and benefit, then to determine the feasibility of the project. Of the project technical solutions, network structure and the equipment function and opened the test are introduced in details. And effect of practical application, the Internet quality verification.Wireless access system covering distance weakness is small, less support concurrent users, system bandwidth utilization rate is low, and the delay jitter is very large. After the number of users increased, the system overall bandwidth utilization rate will decrease sharply. These shortcomings exists solutions. Such as the general principles of the Shenzhen rural broadband wireless access systems. Media access mechanism used is TDMA technology. All related to the base station of the CPE(for) into different network for data communication in the time slot, greatly improve the bandwidth utilization.