Modeling techniques and resource management schemes for survivable mobile communications.

摘要

The remarkable growth of wireless communication networks and the increasing demand for diverse and reliable services over the air interface have created the need for robust and survivable design and management of wireless networks and its performance analysis. This research develops a configurable teletraffic simulator for survivability analysis of wireless access networks under the normal as well as faulty conditions. The framework consists of subscriber traffic layer and radio traffic layer for user location, mobility, network model and resource management schemes. The concept of a geographical data set has been introduced and processed with trip estimation technique for representing spatial environmental information. Overlapping coverage area has been selected as cell-site architecture to improve the resilience of the mobile networks. Dynamic load-balancing protocols have been proposed as a means to increase mobile network survivability and compared with a commonly referenced scheme. The framework has been implemented with C++ and is modeled after cellular communication networks in aspects of network functionality and measurement of real teletraffic characteristics. The applicability of the simulated framework is demonstrated in a case study of fault traffic conditions in traffic hot-spot and failed channel group.