Predictive Traffic Engineering in CDMA ATM Networks

摘要

In this paper, we address the issue of Call Admission Control and Resource Management in wireless ATM networks integrating the Code Division Multiple Access technology. A framework for a dynamic resource management is proposed using heterogeneous traffic descriptors and is based on both effective bandwidth of a source and a signal-to-interference rate computed at the base station receivers. The adaptive monitoring is based on an estimation algorithm, which is driven by a measurement of the interference and predicted traffic parameters of the admitted connections. The Dynamic Leaky Bucket algorithm we propose provides information about the instantaneous bit rate of a source allowing more effective flow control and achieves a good match in terms of predicting the congestion of any switch. It is able to police implicit resource management, which is used for both Continuous Bit Rate and Variable Bit Rate traffics; as well as explicit resource management, which is used for Available Bit Rate traffics.