A Distributed Resource Admission Control Mechanism Supporting Multicast and Heterogeneous Receivers for MANETs

Resource admission control is widely introduced to control the network resources, schedule the resources and admit new services. Resource reservation protocol (RSVP) is a transport layer protocol designed to reserve resource across a network for an integrated services internet. RSVP makes an appointment for each flow and the information of status grows fast with the increase of flow number, it isn’t suitable for Ad Hoc networks because the cost of connection maintenance is more expensive than establishment. In this paper, we introduce a distributed resource admission control mechanism for Ad Hoc networks (DRACM), which can adapt to dynamic changes in mobile Ad Hoc network by close to call or packet transmission time granularity. DRACM responses rapidly to re-routing, can re-build a resource reservation in minimal service degradation or least service interruption. Meanwhile, we adopt client-oriented control mechanism, can also support multicast and meet the heterogeneity of receivers.