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With the rapid development of broadband services , broadband access needs of the business increasingly become the urgent needs of the individual operators , building a simple structure , high speed , secure and reliable broadband access network . Mainstream form of broadband access in China or copper-based xDSL , can not carry a wide range of broadband future new business . xDSL access mode as mainstream broadband IP network , can provide broadband access , downlink rate because the transmission distance , cable size , interference , and a variety of factors such as the effects of a sharp decline caused by the use of the user's impact. With the rapid development of various types of high-speed business spurred the IP access network aspects of electrical signal transmission from the traditional to the fiber- optical transmission medium , this passive optical network xPON technology came into being , the technology follows IEEE802.3ah or ITU . TG984 agreement , flexible networking , to provide bandwidth characteristics , carrying a wide range of business types and characteristics . WLAN technology is the product of the integration of the computer network and wireless communication technology , it is medium to provide wired LAN to wireless channel . The technique is based on the 802.1X standard . In this paper, the above three broadband access technology intensive study their characteristics summarized developed six basic building mode , and according to the regional characteristics of Henan Province , planned eleven kinds of scenarios , hoping for Henan Unicom broadband access network construction provides a theoretical basis and templates . Henan Unicom broadband access case studies , the problems in the access network structure , to do in-depth analysis , reasonable optimization .
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