Multipoint-controlled protocol discovery processing method and related Ethernet passive light network

Abstract

The method comprises: optical line terminal (OLT) sends a strobe finding message to the optical network unit (ONU); the ONU sends a registration request message to the OLT; after receiving the registration request, the OLT sends the registration message to the ONU and starts up the timer; after the timer is time out, the OLT immediately sends the standard strobe message to the ONU to allocate the bandwidth authorizing window for the registration confirmation message; if the OLT doesn't receive the registration message in the authorizing window, then deleting the registration for the ONU and restarting the finding and processing procedure; if the OLT receives the registration confirmation message in the authorizing widow, then the finding and processing procedure of the ONU is implemented.

Description

technical field [0001] The invention relates to the field of broadband optical fiber access, in particular, the invention relates to a discovery processing method applied in an improved multipoint control protocol of an Ethernet passive optical network. In addition, the present invention also relates to a related Ethernet passive optical network. Background technique [0002] With the rapid development of the Internet and new services and applications such as IPTV, higher requirements are placed on the access bandwidth. Optical fiber access has become an inevitable direction for the development of broadband access networks. Considering the maturity of technology and operating cost, Ethernet Passive Optical Network (EPON) is the most important means of realizing optical fiber access, and it is also the access technology with the most development potential. [0003] Since the EPON system adopts a bandwidth-sharing point-to-multipoint topology, each optical line terminal (OLT)...

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Problems solved by technology

Since the ONU needs a certain amount of time to process the registration message, and the size of the time is not clearly specified in the IEEE802.3ah standard, if the processing time of the ONU is too long (more than ten milliseconds), the ONU will not be able to register in the standard GATE message. Send a registration confirmation within the bandwidth authorization window of

exist figure 1 Between the third and fourth arrows from top to bottom, that is, the interval between the OLT sending the registration message to the ONU and the OLT sending the strobe message to the ONU may be very short. The ONU has learned the bandwidth authorization window, but has not yet processed it. After registration, it is impossible to send the registration confirmation message in the authorization window

When the ONU is ready to send a registration confirmation message, there is no bandwidth authorization window for the OLT, and the registration process needs to be restarted. After the registration is restarted, the OLT sends a registration message to the ONU, and then the OLT sends a strobe message to the ONU, and the OLT The interval between sending a registration message to the ONU and the OLT sending a strobe message to the ONU may be very short. If the time for the ONU to process the registration is still too long, the ONU still cannot register smoothly, and this reciprocation also wastes system resources. bandwidth

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