Mobile multimedia instant messaging and presence services: the architecture and protocols

Absiracl Instant Messaging and Presence service i.s emerging as a major killer application in the telecommiinicutions indiistrv. Hence in the wireless indnsty there is a need for an initiative of mobile miiltimedia instant messaging and prwence service (IMPS) architectirre and protocol standard that takes mohile reqirirements into accoiint and ensiires interoperahilip herween d$ferent mobile terminals, operators and $.red Internet service providers. I n the ciwrent 2G and 2.5G mohile networkr. the Wiieless Village initiative provide.^ a standard architectiire and protocol suite to build interoperable IMPS service covering miiltimedia content sharing. group chat and presence nut;fkation. and addresses the privacy and access control issires. However with the gaining popiilurif?, of SIP (Session Initiation Pr.otoco1) in the 3G nehvork. it is anticipated that the mobile miiltimedia IMPS architectiire arid protocol standard will converge and align with the SIP/aniil,l~. SIP is ciii-rently being adopted as the core call cuntrolpr~otocol in 3G IMS (1P Multimedia Subsytem) nehvoi-kv. It is e-xpected that the Wirele.ss Village standard uill eventira1l.v integrate with the SIP approach. In /Iri.s poper I(% inti-odiice the conimon IMPS service architecture. analyze the stateofart IMPS protaco1 standards. and envision the IMPS evolirtion in the mobile arena.