DRA: a new buffer management scheme for wireless atm networks using aggregative large deviation principle

摘要

In this paper, we present a buffer management scheme called Dynamic Resource Allocation (DRA) that provides TCP traffic control guarantees to VCs carrying multiple dynamic discard thresholds (Multiple Dynamic Thresholds―MDT) over a wireless CDMA ATM network. It is assumed that we have TCP wireless ATM networks integrating the Code Division Multiple Access (CDMA). A major task activity related to these systems addresses the call admission control and resource management The MDT scheme classifies the traffic into several classes and maintains a separate dynamic threshold buffer for each class. DRA is used on a FIFO buffer shared by several VCs. Each VC can carry traffic from one or more TCP connections. The DRA scheme offers an intelligent, dynamic, policy-based approach to traffic prioritizing, load balancing, and accounting that controls the most critical areas of the TCP rate monitoring using the large deviation principle. Through its advanced traffic control algorithms, the DRA assures guaranteed traffic flows, minimal packet loss or retransmissions, optimizes TCP throughput, and assures that the network is always used to its maximum potential.