With the development of backbone communication network, EPON will be the main method for broadband access
techniques.EPON has 1Gb/s broadcast ability in downstream. This paper researches DDBA (downstream dynamic
bandwidth allocation) management and traffic control mechanisms, and brings forward a LLID (end user) based solution.
The emulation results show the proposed solution supports high priority delay sensitive service such as TDM E1
perfectly, and also keep the high throughput.
In this paper, we propose an approach of user traffic segregation, which uses a dedicated logical link identified by LLID to deliver specific service. Illustration and testing are given to show that providing multiple logical links per ONU is more flexible and scalable, comparing with single logical link per ONU cooperating with IEEE 802.Q/p VLAN.
A dynamic bandwidth allocation policy to better support the TDM services in EPON is proposed. The analytical and simulation results prove that the proposed scheme does best in what it is designed to do.