There are several ways to connect the WAP gateway server and the mobile network, and the corresponding protocol stack is discussed, and it has been further discussed. 1. Introduction The current WAP has become a hot topic in the field of information technology (IT), and there are more articles and discusses in this regard, involving all aspects of WAP, such as the protocol stack itself, WAP various applications, etc. Indeed, WAP realized the dream of 'Internet surfing', and is one of the best modes of wireless communication and Internet combination. The WAP application is also quite rich, and its greatest feature is the flexibility of the system structure and the openness of the protocol. WAP Gateway Server is the key part of the mobile network, which directly determines its application model directly with the connection mode of the mobile network. can. This article will talk about the preliminary view of further strengthening the function of WAP gateway server. 2. Classic WAP Application Structure Model Basic Structure Based on WAP Forum (WAP Forum) Basic Structure is BEARER Wireless Data News Agreement (WDP) Transmission Layer Security Protocol (WTLS) Transaction Layer Agreement (WTP ) Conference Layer Protocol (WSP) Wireless Application Environment (WAE), in the latest WAP1.2 version, Many new application patterns, such as 'push' (push, to actively send the Internet content to a mobile user Agreement), etc. The WAP protocol stack is applied to the structural model as shown in Figure 1. The WAP gateway server as a core component mainly completes two functions: implementation of protocol conversion between WAP protocol stack (WSP / WTP / WTLS / WDP) and Internet Protocol (HTTP / TLS / TCP / IP); Decoding, the WAP data is compressed and encoded to reduce network traffic, maximizing wireless resources. WAP implements mobile phone Internet, is coordinated by mobile terminals, mobile networks (composed of base stations and switches), WAP Gateway Server and Network Content Supplier (ICP), Network Service Providers (ISP). This typical mobile Internet access process can be briefly described as follows: (1) Mobile request; (2) Mobile network (GSM, CDMA or other mobile network) Turn on local ISP; (3) Local ISP connection WAP gateway server; (4) The WAP Gateway server issues a request to the target content server; (5) The target content server passes the information to the WAP gateway server; (6) The WAP gateway server sends the process to the local ISP; (7) Local ISP back mobile back Network; (8) The mobile phone receives Internet information; it can be seen that the network entity involved in this process is more complicated. At the same time, the WAP gateway server is only used as a gateway, which is relatively insufficient. Therefore, it may be possible to use the openness of the WAP protocol to change this single connection form to achieve the purpose of making the powerful storage and processing capabilities that use the WAP gateway server to make it a true 'server'.
