IEEE 802.16 wireless MAN is expected to be the revolution of broadband wireless access technology. The grant/request mechanism in IEEE 802.16 MAC enables different QoS for different class of multimedia. Efficient resource management is essential in providing scalability in such large wireless network. The mixture of conventional voice traffic and fractal traffic make the resource management more complex in 802.16 wireless network than that in telephone networks. In this paper, by using Gaussian model for aggregated traffic in large network and Chernoff bound method, we analyze upper bound blocking probability above the packet level for all types of traffic in 802.16 wireless MAN. Based on the analysis result, we propose an admission control and bandwidth allocation mechanism above the packet level for 802.16 wireless MAN. We also compare our upper bound blocking probability methodology with Erlang B formula which is only useful for voice traffic and find out that result from our methodology can be used as approximate blocking probability when network is large and is more efficient than Erlang B formula in numerical computing.