DISTRIBUTED DYNAMIC CHANNEL ASSIGNMENT FOR IN-BUILDING MICROSYSTEMS

Several fully distributed measurement-based dynamic channel assignment (DCA) schemes are compared for the large-scale uncoordinated deployme nt of in-building microsystems: DCA based on the first quality of serv ice (DCA-FQOS) channel selection, DCA based on best QOS channel select ion (DCA-BQOS), DCA-WO (channel) (DCA with weighted channel orderings) , and DCA-WO (carrier) (DCA,vith weighted carrier orderings). The DCA schemes are evaluated in terms of their blocking probabilities and alg orithm processing delay. We also investigate how the DCA performance d epends on the number of radio ports per base station, asynchronous tim e-slot transmission, and propagation conditions. Of the proposed DCA s chemes, the simulation results show that there are tradeoffs in select ing a DCA scheme. Finally, a new scheme called DCA with limited select ion weighted ordering (DCA-LSWO) is proposed that combines some previo us strategies to improve performance for in-building microsystems.