Architecture, implementation, and evaluation of a concurrent multi-path real-time transport control protocol

J. Anand, Dilip Sarkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Current multimedia applications utilize a combination of real-time transport protocol (RTP) and user datagram protocol (UDP) for transmitting real-time streams across the network. Bandwidth aggregation over multiple paths for improved real-time stream transmission can be achieved using either a combination of multi-flow RTP (MRTP) and UDP, or various adaptations of Partial reliability (PR) extension of SCTP (SCTPPR). However, they are not really useful for balancing load on the multiple paths. The receiving end of these protocols can neither identify late arriving packets nor notify the sender about them. The novel concurrent multi-path real-time transmission control protocol (cmpRTCP) proposed, implemented, and evaluated in this work not only overcomes the problems faced by existing multi-path protocols, but also preserves the novel design and implementation features of the recently proposed cmpTCP. This protocol which has a congestion controller and a packet scheduler embedded in its core, intelligently exploits the availability of multiple paths between multi-homed hosts for concurrent transmission and showcases the ability of (i) remaining TCP-friendly while aggregating bandwidth, (ii) balancing load across paths by scheduling more packets on less congested paths, (iii) increasing end-to-end connection reliability by using multiple paths and (iv) improving QoS at the receiving end by scheduling more packets on better paths.

Original languageEnglish (US)
Title of host publicationMilitary Communications Conference, MILCOM 2007
StatePublished - Dec 1 2007
EventMilitary Communications Conference, MILCOM 2007 - Orlando, FL, United States
Duration: Oct 29 2007Oct 31 2007

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM


OtherMilitary Communications Conference, MILCOM 2007
Country/TerritoryUnited States
CityOrlando, FL


  • Computer networks
  • Multi-homing
  • Realtime protocols
  • Transport protocols
  • cmpRTCP

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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