Improvement of GPON MAC Protocol for IP TV Service

PON (passive optical network) is the most promising technology applicable to TPS (triple play service). To improve processing the packet, MAC (multiple access control) is the most important technology in the PON. The core of MAC is DBA(dynamic bandwidth assignment), it classifies SR-DBA (status report DBA) and NSR-DBA (non status report DBA). However, it's bad in network efficiency because GPON DBA is using BPONpsilas DBA This study develop BR (borrow-refund)-DBA for improve network efficiency and prompt process. For take the gauge of performance evaluation, estimate about throughput, fairness and queue delay in SR-DBA and NSR-DBA environment.