Date Added: Sep 2010
IP Multimedia Subsystem (IMS) known for its prominent service delivery is paving way for applications like Video Voice over IP (VVOIP) on handheld devices too. Android, a software platform from Google, pioneering in middleware and applications domain of handheld devices does not offer support for IMS services by design. Motivated by these observations, this paper presents novel scalable architecture to cater IMS based services on Android. First, this paper discusses few related works to investigate and analyze the IMS and the role of SIP in IMS services. Second, this paper discusses few characteristics of android architecture and detail constraints associated with middleware sub-system to cater IMS services.