Ashutosh Dutta

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This paper describes the Session Initiation Protocol (SIP) based mobility in IPv6 and its performance in our laboratory testbed. For real-time mobile multimedia communication, we use SIP for signaling protocol as well as for supporting terminal mobility. While performance study for real-time mobile communication refers to several factors and their(More)
In this work, we measure Wireless Local Area Network (WLAN) voice performance and capacity. While most WLAN applications today are data centric, the growing popularity of Voice over IP (VoIP) applications and the trend towards convergence with cellular networks will catalyze increased voice traffic. Since voice applications compete not only with each other,(More)
This paper describes a lightweight Intra-domain Management Protocol (IDMP) for managing mobility within a domain, commonly known as micro-mobility management, for next generation wireless networks. IDMP is modular and simple because it leverages existing protocols, such as Mobile IP or SIP (Session Initiated Protocol) as global mobility management, for(More)
MarconiNet is an architecture for IP-based radio and TV networks, built on standard Internet protocols including RTP, RTSP, SAP, and SDP. It allows to build virtual radio networks, similar to traditional AM/FM radio and TV networks. It addresses some of the practical problems of building Internet radio networks, including the insertion of local content and(More)
Localized mobility protocols are designed to address many of the drawbacks such as additional signaling and over-the-air tunnel overhead associated with global mobility protocols like Mobile IPv4 and Mobile IPv6. Proxy Mobile IPv6 is one such network controlled localized protocol defined in the IETF Although Proxy Mobile IPv6 can resolve longer binding(More)
Dual-mode handsets and multimode terminals are generating demand for solutions that enable convergence and seamless handover across heterogeneous access networks. The IEEE 802.21 working group is creating a framework that defines a Media Independent Handover Function (MIHF), facilitateshandoveracrossheterogeneous access networks and helpsmobile users(More)
A variety of mobility management scheme have been developed for commercial networks ranging from Mobile IP (network layer support), to the Session Initiation Protocol (SIP) based on application layer components such as DNS and SMTP, and Micro-Mobility approaches like Cellular IP, HAWAII. There are significant challenges, however, with regard to the(More)
In order to support session-based real-time communication in a highly mobile environment it is desirable to limit end-to-end delay, jitter and packet loss at a certain threshold level. This paper describes a framework of media-independent pre-authentication (MPA), a new handover optimization mechanism that has a potential to address issues on existing(More)