A window-based flow control mechanism is a sort of feedback-based congestion control mechanisms, and has been widely used in TCP/IP networks. Recently proposed TCP Vegas is another version of the TCP mechanism and has potential to achieve much better performance than current TCP Tahoe and Reno. In this paper, we focus on a window-based flow control mechanism based on a congestion avoidance mech...

This document contains the profile for Congestion Control Identifier 3, TCP-Friendly Rate Control (TFRC), in the Datagram Congestion Control Protocol (DCCP). CCID 3 should be used by senders that want a TCP-friendly sending rate, possibly with Explicit Congestion Notification (ECN), while minimizing abrupt rate changes.

We propose a novel architecture for multicasting of adaptively-encoded layered MPEG4 over a QoS-aware IP network. We require a QoS-aware IP network in this case to (1) Support priority dropping of packets in time of congestion. (2) Provide congestion notification to the multicast sender. For the first requirement, we use RED’s extension for service differentiation. It recognizes the priority of...

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This paper discusses several changes to TCP’s congestion control, either proposed or in progress. The changes to TCP include a Limited Transmit mechanism for transmitting new packets on the receipt of one or two duplicate acknowledgements, and a SACK-based mechanism for detecting and responding to unnecessary Fast Retransmits or Retransmit Timeouts. These changes to TCP are designed to avoid un...

RFC 3270 defines how to support the Diffserv architecture in MPLS networks, including how to encode Diffserv Code Points (DSCPs) in an MPLS header. DSCPs may be encoded in the EXP field, while other uses of that field are not precluded. RFC 3270 makes no statement about how Explicit Congestion Notification (ECN) marking might be encoded in the MPLS header. This document defines how an operator ...

This paper describes six methods for controlling congestion for TCP connections. The first four, Slow Start algorithm [5], Tri-S [8], DUAL [7], and TCP Vegas [1] treat the network as a black box, in that the only way to detect congestion is through packet loss and changes in round trip time, or throughput. The last two, Random Early Detection [4] and Explicit Congestion Notification [3] depend ...

Exponential growth of Internet traffic and the proliferation of new user applications warrant the development of new Internet infrastructure. Due to the fundamental satellite system characteristics such as global coverage, broadcast nature, and bandwidth on demand, satellite systems are excellent candidates for providing high data rate Internet access and global connectivity accommodating multi...

RFC 3270 defines how to support the Diffserv architecture in MPLS networks, including how to encode Diffserv Code Points (DSCPs) in an MPLS header. DSCPs may be encoded in the EXP field, while other uses of that field are not precluded. RFC 3270 makes no statement about how Explicit Congestion Notification (ECN) marking might be encoded in the MPLS header. This document defines how an operator ...

Pre-congestion notification (PCN) marks packets when the PCN traffic rate exceeds an admissible link rate and this marking information is used as feedback from the network to take admission decisions for new flows. This idea is currently under standardization in the IETF. Different marking algorithms are discussed and various admission control (AC) algorithms are proposed that decide based on t...