Detection of DoS Based on MAC Layer of WLAN;

The Implementation of BS MAC Layer Based on IEEE802.16-2004;

The physical layer of system accomplished by super low energy consumption micro controller unit to control receiving and launch module working state; MAC layer and network layer.

Research on the MAC Layer in IEEE 802.11;

Research on the ONU-MAC Layer Downlink of GPON System and Design in FPGA

3 HR-WPAN, coined Hierarchical MAC Scheduling Scheme (HMSS).

Zn-MnO_2 dry cells were built up with denatured Zinc──Montmorillonite as separators.

Combined with practical work,from setting isolation layer,installation of formwork,duck leakage and other aspects the problems existed in prefabrication of prestressed beam slab are pointed out.

The isolation layer of slag was better than the one of construction waste in anti-salt,and the stair-field with a slag layer in the shape of two stripes from south to north and one strip from east to west had the best effect on anti-salt.

It points that useing install isolation layer for high-level building\'s 1# department and 3# department of a multilayer building, achieve the goal of separate settlement,both save the time limit for a project and cost down.

The paper pointed out the necessity of cement concrete interlayer destruction,described the deformation coordination mechanism and stress strength mechanism and put forward the advice of setting up the isolated layer in the cement concrete pavement to prevent the pavement disease.