Extended Quality-of-Service for Mobile Networks

Abstract

Guaranteed QoS for multimedia applications is based on reserved resources in each intermediate node on the whole end-to-end path. This can be achieved more effectively for stationary nodes than for mobile nodes. Many multimedia applications become useless if the continuity is disturbed due to end-to-end or slow re-reservations of resources each time a mobile node moves so that its point-of-presence in the IP network changes. Additionally, due to lack of QoS support from the correspondent node, mobile nodes would need a way to reserve at least local resources, especially wireless link resources. This paper proposes small modifications to the standard Internet resource reservation protocol, RSVP, so that initial resource reservations and re-reservations due to terminal mobility can often be done locally in an access network. This is clearly a significant improvement to the current RSVP.