Research of Presence and Instant Messaging Mechanism for Mobile Internet

Represented by instant messaging of Over-The-Top business with real-time online,communication anytime,anywhere convenience has become hot spot of the era of mobile Internet applications. In the current telecommunications standards system,Presence and Instant Messaging business implementation is divided into two categories: SIMPLE and XMPP,but these two kinds of protocols developed earlier,and on flow,power consumption and transmission didn't consider the characteristics of the mobile Internet. This article will be based on the analysis of the SIMPLE and XMPP protocol,put forward a model based on subscription and publish of the mobile Internet Presence / IMprotocols,and gives the specific implementation,also focuses on message routing mechanism when multiterminal online at the same time. At last,comparative analysis the proposed protocol with SIMPLE and XMPP.