Delivering diverse delay/dropping QoS requirements in a TDMA environment
Jeffrey M. Capone, Ioannis Stavrakakis · 1997
In Wireless ATM networks transmission resources are shared among geographically disperse applications with diverse Quality of Service (QoS) requirements and traffic characteristics. To provide QoS guarantees and use the bandwidth efficiently, call admission and scheduling functions are necessary. These functions should ensure the delivery of the target QoS to the supported applications while achieving statistical multiplexing gains, without explicit and continuous exchange of information between sources and scheduler. In this paper the problem of sharing resources (slots of an up-link TDMA frame) among heterogeneous Variable Bit Rate (VBR) applications with diverse QoS requirements is addressed. The QoS requirements for each application is defined in terms of a maximum tolerable packet delay and dropping probability; a packet is dropped if it experiences excess delay. The region of achievable QoS vectors is established for policies that are work-conserving and satisfy the earliest due ...