Proposal of new RSVP which considers maximum waiting time for bandwidth reservation

Abstract

AbstractA conventional IP network is a connectionless, best effort network, but has difficulty guaranteeing the Quality of Service (QoS). To guarantee end‐to‐end QoS, the Internet Engineering Task Force (IETF) has proposed bandwidth reservation protocols such as the Resource ReSerVation Protocol (RSVP), but a protocol that guarantees all bandwidth reservation requests has not been realized. To address this, with the objective of implementing bandwidth reservation capable of reliably accepting the bandwidth reservation requests regardless of the size of the requested bandwidth, the authors proposed Waiting Bandwidth Reservation Communication, which is an extension of RSVP. By using this method, we verified that excellent results compared to conventional RSVP are obtained when all bandwidth reservation communications pass over a special path and the bandwidth reservation requests exceed the bandwidth available for reservation along that path. On the other hand, in a wide‐area network such as the Internet, the problems are that all of the bandwidth reservation communications are not along special paths and unnecessary waits are generated when waiting for bandwidth reservations. With the objective of solving these problems, in this paper, we propose RSVP that considers the waiting time until the start of bandwidth reservation and demonstrate through simulations how the proposed method solves these problems. © 2004 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 87(8): 71–81, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.10103