Optical communications is the most important technology in the access network. Gigabit-capable passive optical network (GPON) has been viewed as a promising technology for the next-generation fiber-to-the-home (FTTH) optical systems because they can deliver multi-services (e.g. TDM, Ethernet) with the required Quality of Service (QoS). This paper analyze ITU-T GPON standard G.984.1 to G.984.6 and GPON network configuration, the information about dynamic bandwidth allocation (DBA) in GPON standard, an improved DBA algorithm based on the all the transmission containers (T-CONT) was proposed, ela...