1. A Systematic Scheme for Multiple Access in Ethernet Passive Optical Access Networks Maode Ma, Member, IEEE Yongqine Zhu Tee Hiang Cheng, Senior Member, IEEE JOURNAL of LIGHTWAVE Technology, vol. 23, No 11, November 2005

2. Abstract Consider the issue of upstream channel sharing in the EPONs Novel multiple-access control scheme to provide bandwidth-guaranteed service for high-demand customers providing best effort service to low- demand customers

3. Introduction Two issues not considered in IPACT different ONUs may have different bandwidth requirements dynamic bandwidth-allocation scheme also introduces bursts The major contribution of this research propose a multiple-access scheme that can be supported within the MPCP framework. novel multiple-access scheme consists of three components. parameter-based call-admission control (CAC) mechanism even-distribution algorithm (EDA) bandwidth-guarantee-polling (BGP) MAC protocol

4. multiple-access scheme ONU 1 :5 ONU 2 :3 ONU 3 :3 ONU 4 :3 ONU 5 :2 ONU 6 :1 BG ONU Non-BG ONU 7~16

5. Simulation Model Rang of ONU to OLT: 10~20km BG ONUs: 20 (ID:1~20, kind of 20,10,4,1) non-BG ONUs: 44 (ID:21~64) EPON transmission speeds 1Gb/s Entries table: 100 OTL  ONU: broadcast ONU  OLT: TDMA Packets size: 500 B

6. AVG delay

7. AVG queue length

8. AVG loss rate

9. Conclusion A systematic scheme for the EPON to provide efficient network service to different kinds of request ONUs Provide quality of service (QoS) BGP scheme are easily implemented to MPCP protocol.