Abstract
AbstractRecently, on the Internet, only best‐effort service has been provided, in which communication quality (QoS) aspects such as throughput and delay are not guaranteed. There is an increasing demand, however, for real‐time transfer of voice and video data, and reservation‐based service is being considered in which the communication quality is guaranteed by reserving network resources. Reservation‐based service, however, has problems such as the overhead of packet processing, as well as scalability. There is an ongoing basic discussion as to whether best‐effort service is sufficient or reservation‐based service is necessary. This paper defines the communication quality which is obtained when the user uses a network application as the utility for the user. The user utility for the real‐time application is derived and comparatively evaluated for the two service models, that is, best‐effort service and reservation‐based service. The following results are obtained quantitatively. Best‐effort service can provide sufficient utility if a sufficient channel capacity is available, for which, however, sufficient channels must be provided by adequate network design. If not, reservation‐based service is necessary. © 2001 Scripta Technica, Electron Comm Jpn Pt 1, 85(1): 11–21, 2002
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Electronics and Communications in Japan (Part I: Communications)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
