In response to the carrier network, WAP networking approach includes a short message (SMS), circuit exchange data (CSD), and upcoming general packet wireless services (GPRS), and the like. This paper specifically describes the main CSD-based networking schemes and systems.
First, the WAP gateway system constitutes a WAP gateway system may consist of the following functional entities: WAP gateway, firewall, access server, DNS server, various applications (WML / WWW, FTP, E-mail, etc.) servers. Where the access server may include a AAA service, DHCP, billing data generating function modules, and the AAA service and billing information generating function can also be implemented by the WAP gateway. The specific system constructs shown in Figure 1. Among them, accessing servers, DNS servers, and various application servers should be set as needed. Second, WAP business networking scheme based on circuit switching mode (CSD) (1) Using mobile network to build WAP service network, WAP gateway sets 1. The setting of the access server connects the access server to the GMSC of the GSM network in the local network. Interface signaling of the access server and GMSC uses iSUP. The access server is connected to the backbone node of the IP network. If there is no IP network bone node, you can access the IP network access node. Figure 2 shows a schematic diagram of the GSM network and the access server connection in this case. 2. The location of the WAP service network structure WAP gateway can be the same as the location of the access server, or may not be the same. Figure 3 shows the WAP network structure of the scheme one. The WAP gateway system in the figure includes WAP gateways and access, WAP content services, and the like, which are shown in Figure 3. The local access system in the figure shows only the access server and router. When the actual network, it is also possible to include a function module such as AAA, DHCP, various Internet applications (WWW, E-mail, ftp, etc.) servers. 3. User Access Mode The local mobile user dials the access server where the special service number is connected, and the personal user information (ie, the call number) is sent to the access server.
To facilitate user use, the WAP service access authentication uses a method of public username and password, such as "WAP", the password is "WAP", and when the user passes the authentication of the server, you need to enter the user's personal Information can enter the designated portal site, and user personal information is recommended for the user's call number. When the user wants to access other site information, the link must be linked by the specified portal site. (2) Built WAP service network using mobile network, WAP gateway distribution setting 1. The network organization local access server is connected to the GMSC in the local GSM network. (3) Group WAP Business Network with existing ISP, centrally setup WAP gateway mobile operators can form WAP business networks with existing ISPs (ISPs that should try to select network coverage ". Cooperation with existing ISP refers to the WAP service network locally through other ISP access servers. 1. The network structure is directly connected to the WAP gateway (including a variety of WAP gateways, WAP application servers, and firewall) to local ISP access server systems, and other networks can do not have to do any changes. The schematic diagram of its network structure is shown in Figure 7. WAP users can access the Internet through cooperation ISP distribution throughout the country, and log in to the WAP gateway you belong to. 2. The access code local mobile user dials the access server where the special service number is connected, and the personal user information (ie, the call number) is sent to the access server. Roaming mobile users Dial the special service number only to access the access server of the visit, and then enter the IP network through the home gateway. 3. Certification In plan two, since it is necessary to cooperate with the existing ISP, for WAP users, remove the terminal to authenticate on the HLR of the GSM network, it is necessary to perform authentication on the ISP access server. , Authentication methods and protocols are the same as those of the ISP's ordinary users.
