Quality of service (QoS) is like ‘life’ — a dictionary may define the word but it does not help us understand its meaning. This paper defines what is meant by QoS in the context of packet networks. It discusses the drivers that lead to the development of QoS for IP networks in the context of the history of packet communications. The paper then presents the basic packet QoS taxonomy using the simple analogy of the postal system. It also briefly looks at potential future developments, while discussing general QoS issues throughout.
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Cohen D: ‘Specifications for the Network Voice Protocol’, IETF RFC741 (November 1977).
Clark D, Shenker S and Zhang L: ‘Supporting real-time applications in an integrated services packet network: architecture and mechanisms’, Proc SIGCOMM ‘92, Baltimore, MD (August 1992).
Bohn R, Braun H, Claffy K and Wolff S: ‘Mitigating the coming Internet crunch: multiple service levels via precedence’, UCSD/NSF Technical Report (November 1993).
Braden R, Clark D and Shenker S: ‘Integrated Services in the Internet Architecture: An Overview’, IETF RFC1633 (June 1994).
Bradner S (Ed): ‘Internet Protocol Quality of Service Problem Statement’, Internet Draft, draft-bradner-qos-problem-00.txt (September 1997).
Blake S: ‘Some Issues and Applications of Packet Marking for Differentiated Services’, Internet Draft, draft-blake-diffserv-marking-00.txt, IBM (December 1997).
Rekhter Y and Rosen E: ‘Carrying Label Information in BGP-4’, Internet Draft, draft-ietf-mpls-bgp4-mpls-00.txt (April 1998).
Rosen E and Rekhter Y: ‘BGP/MPLS VPNs’, IETF RFC2547 (March 1999).
Blake S et al: ‘An Architecture for Differentiated Services’, IETF RFC2475 (December 1998).
Handley M et al: ‘SIP: Session Initiation Protocol’, IETF RFC2543 (March 1999).
Martini L et al: ‘Encapsulation Methods for Transport of ATM Cells/Frame over IP and MPLS Networks’, Internet Draft, draft-martini-atm-encap-mpls-01.txt (June 2002).
Challinor S: ‘An introduction to IP networks’ BT Technol J, 18, No3, pp 15–22 (July 2000).
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Willis, P.J. An introduction to quality of service. BT Technol J 23, 13–27 (2005). https://doi.org/10.1007/s10550-005-0003-8
- Information System
- Communication Network
- User Interface
- Future Development
- Postal System