Reservation Based QoS Provision for Mobile Environments
Alberto Urueña López, Héctor Velayos, Jukka Manner, Nuria Villaseñor · 2001
With the fast adoption of IP-based communications for mobile computing, users are expecting a similar service in wireless and wired networks. This raises the need for setting guarantees to the quality of the offered service (QoS), despite the technology of the access network or the mobility of the terminal. This generates a new challenge for QoS provision, as it will have to deal with terminals changing their point of attachment to the network. In this paper an optimisation for the operation of reservation based QoS is given for mobile environments: the coupling of the reservation protocol RSVP with different perhost micro-mobility protocols. The micro-mobility and QoS signalling mechanism are coupled either loosely via a triggering mechanism, or more tightly so the QoS and mobility information is carried by the same protocol. Qualitative and quantitative results of this coupling are presented. The procedure includes the comparison of performance parameters such as delay, loss and throughput when protocols are coupled and de-coupled KEY WORDS: QoS, micro-mobility, mobile networks, coupling, RSVP,HAWAII.