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Arup Acharya
is a Research Staff Member in the Network Server System Software
group in the Security, Networking and Privacy Department, IBM TJ
Watson Research Center, Hawthorne.
Contact : arup@us.ibm.com
Phone : +1 914 784 7481 / sip:arup@research.ibm.com
His current research interests include:
， VoIP/ SIP (Session Initiation Protocol) / Instant Messaging
ggg o Scalability of SIP servers
ggg o Characterizing SIP workloads
and defining benchmarks
ggg o SIP network architecture
ggg o Enabling applications to leverage
SIP capabilities
ggg o Diagnostic tools for a SIP network/infrastructure
ggg o "Infrastructure-less"
/ P2P SIP
ggg o Open-source SIP software
ggg o SIP as a control protocol for
mobility / IMS
， Mobile/wireless networking protocols and architectures
ggg o Wireless Mesh Networks
ggg o Infrastructures for public wireless
LAN hotspots
ggg o Mobile IP, IPv6
ggg o 802.11 / WLAN, GPRS/ 3G / 4G
networks
ggg o e911 (location-determination
using 802.11 and/or cellular systems)
， MPLS (Multi-protocol label switching)
， IPv6
， Content Distribution Networks (CDNs)
， Web Switching
He is also responsible for the Advanced Networking Services micropractice
for On-Demand Innovation Services (ODIS), a joint program between
IBM Research and IBM Business Consulting/ Global Services to tap
IBM researchers for solving difficult customer problems. For example,
he is currently working with a leading cable company in the US for
scaling their VoIP service infrastructure to accomodate the exprected
rapid growth in their subscriber base (from ~30,000 to 8 million
in 5 years). This micropractice includes SIP / SIMPLE / IMS, IPv6
and Mobile/wireless Networks, among other topics.
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