Submitted to ieee transactions on reliability 1 survivability. A data frame transport scheme used in gpon systems that is connectionoriented and that supports fragmentation of the network administrator data frames into variable sized transmission fragments. Basic fttx networks olt connection chart of fiber optic. The ont equipment technology is based on gem gpon encapsulation method, and complies with itut. Each different trafficclass tc per uni is assigned a different gem port. The gpon network acts as a layer 2 ethernet metropolitan network. With ae the individual signals are split out using electronic equipment near the subscriber. In the downstream, each frame starts with the physical layer control block pcbd in the figure. Gem gem encapsulation gpon encapsulation method gem. Pdf this article presents a design of a database model used to gather and analyze data frames transmitted over gigabit passive optical. A technique for forwarding downstream packets in a gpon. Also it provides secure communication gepon technology encryption is provided in both ends i.
This course is designed to benefit those requiring an in depth knowledge of the principles and applications of ten gigabit and gigabit passive optical networking and fibre systems such as fibre to the x fttx applications and their associated equipment, its flexibility and function within a modern transmission network. The mapping between the gem port and the tcont is flexible. Gem provides a connectionoriented, variablelength framing mechanism for transport of data services over the passive optical network pon. The doubletagged oam space has free access to all eight md levels, and it can use the same. To support atm multiprotocol, gpon defined an entirely new package structure gem gpon encapsulation method, atm and other protocols can be mixed encapsulation framing. Gpon supports two layers of encapsulation where the ethernet frame is encapsulated into a gpon encapsulation method gem frame which is encapsulated again into a gpon transmission convergence gtc frame.
Supports superior features, higher speeds and was standardized by the itut. The results proved that the encapsulation method of itu standards is. To further keep pace with markets demands, epon ethernet passive optical network and gpongigabit passive optical network emerges from pon and become popular versions of it. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. The main differences in the architecture are gpon in data throughput.
Us20070223399a1 method of configuring native vlan and. The object takes requests from other client objects, but does not expose the details of its data or code to them. Gpon encapsulation method gem two modes of operation atm, gem. Ftth gpon gpon gigabit passive optical networks is an optical system for the access networks, based on itut specifications g. It specifies gpon frame format, the media access control protocol, oam processes and information encryption method. Apr 23, 2015 ont, olt and mdu in gpon technology 1.
Gpon gepon comprehensive comparison table comparison gpon gepon gpon gepon basics itu standard g. An overview of gpon in thean overview of gpon in the. Gpon is an optical technology based on the industry standard itutg. Pdf application for gpon frame analysis researchgate.
Simulations of grant allocation in ngpon2 networks using. Full gpon solution olt, odn, onu include technical support service are all available at huanetwork, many isps starts their gpon journey by telnet accessing huanetwork gpon lab remotely, which is a free service provided by huanetwork aiming at bridging the digital divide. The gtc payload field contains a series of gem gpon encapsulation method frames. The gtc frame also includes pure atm cells and tdm traffic. Gigabit passive optical networking xgpongpon course. Gigabit passive optical network a longer transmission reach, higher bandwidth, reliability, and lower operating expense opex on services.
Ethernet frames or ip packets is encapsulated in gem frames using the socalled gpon encapsulation method gem. Apon atm based pon uses atm encapsulation of the transported data. Recall that atm packages everything in byte packets with 48 for data and 5 for overhead. Gpon encapsulation method gem allows very efficient packaging of user traffic, with frame segmentation to allow. A data frame transport scheme used in gpon systems that is connectionoriented and that supports fragmentation of the network administrator data frames into. Using gpon access in the context of tr101 broadband forum. The downstream gem frame stream is filtered at the onu based upon the 12bit port id field contained in the header of each gem frame. Gpon encapsulation method gem it is the data transport scheme in the specified gpon transmission convergence layer.
Gpon transmission convergence tc layer itut recommendation g. In the pon the signals are replicated passively by the splitter. Gpon also uses a generic encapsulation method to carry other protocols. Triple play service highbandwidth longreach up to 20 km gpon is the choice of large carriers in the international market. Dec 06, 2017 gpon uses an ipbased protocol and either atm or gem gpon encapsulation method encoding. This recommendation identifies gpon encapsulation method gem as the sole data transport. An overview of gpon in thean overview of gpon in the access.
Electronics free fulltext application for gpon frame. Also, the paper shows gpon as technically and economical sound solution for next generation. Gpon encapsulation method pdf traffic by using gpon encapsulating method. Standardized by the ieee in mid gpon or giga pon gigabit pon uses a new generic encapsulation method gem tr ansport layer that supports atm, ethernet and tdm data transport. In accordance with the gpon encapsulation method gem, packets are encapsulated in gem frames having portids. One method is called active ethernet ae, and the other is the pon. A user can initiate this test method from management platform 15 fig. An optimization improves the reduction time for the gpon activation process with current ploam messages and.
The use of the gpon fiber access technology standard architecture does allow a significant service delivery increase when compared with traditional xdsl technology. The object takes requests from other client objects, but does not expose the details of. Ppt gpon powerpoint presentation free to download id. If user packet is shorter, then encapsulation is required.
A method for ont processing of ethernet messages, comprising. Apr 12, 2020 ftth gpon learn ftth in simple and easy steps starting from basic to advanced gem gpon encapsulation method supports both native tdm and data. More commonly known as future proof, fiber to the home ftth is a new technology to. Evolusi dari apon bpon model paketisasi data menggunakan gpon encapsulation method gem untuk membawa layanan tdm dan packetbased. In this article, a principle of the downstream direction is described. Gpon enables triple play voicedatavideo and is the basis of most planned fttp fiber to the premises applications in the near future. Pdf gpon in telecommunication network researchgate. Epon and gpon are popular versions of passive optical networks pons gpon also uses a. Survivability analysis of nextgeneration passive optical networks and fiberwireless access. Gpon uses an ipbased protocol and either atm or gem gpon encapsulation method encoding.
Each onu is configured to recognize which portids belong to it. Epon or gepon ethernet pon uses ethernet for data encapsulation. Passive optical networks and fttx ryerson digital repository. Olt is a power equipment that manage and distribute data from and to subscribers. Gpon olts connect to the provider network using atm switches or convert to ethernet. Gpon encapsulation method how is gpon encapsulation method. Bpon broadband pon succeeded apon and also uses atm encapsulation. An issue with this kind of system is the difficulty in analyzing a transmission on the optical part which is caused by the difference among devices using ethernet frames technology and passive optical network technology. The gpon multiplexing or framing is explained with the following factors. A shared network based on a pon has several advantages over one based on ae. Standard ethernet starts with an essentially contentfree 8b preamble. Access network assures and controls the media mac communication through a tdma scheme, introducing gem gpon encapsulation method in between to adapt tdm layer to ethernet. The gigabit gpon encapsulation methods allow carrying a variety of services including atm, tdm voice, and ethernet. An issue with this kind of system is the difficulty in analyzing a transmission on the optical part which is caused by the difference among devices using ethernet frames technology and passive optical network technology with usage gigabit encapsulation method.
The ont equipment technology is based on gem gpon encapsulation method, and complies with itut g. Jan 25, 2018 what is gpon gigabit passive optical networks. Us20170054719a1 optical network unit onu registration. Gpon systems also have many of the same basic capabilities as other pon systems have. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Olt is the starting point for gpon network and is connected to service node. Gem stands for gpon encapsulation method, and this is. Gpon wavelength division multiplexing internet protocols. Aug 25, 2015 a user can initiate this test method from management platform 15 fig.
Gpon encapsulation method how is gpon encapsulation. Alcatellucent 7368 isam ont g240wb residential gateway ont the alcatellucent 7368 intelligent services access manager isam g240wb optical network terminal ont is the answer for home networking delivered by gigabit passive optical network gpon. Ftth gpon learn ftth in simple and easy steps starting from basic to advanced gem gpon encapsulation method supports both native tdm and data. Embodiments of the present invention provide an optical network unit onu registration method, apparatus, and system, to resolve a problem in the prior art that a registration process is cumbersome. The gem flow consists of long 125us gpon frames, whose length may or may not match that of the client. A gpon encapsulation method gem port is a virtual port for performing gem encapsulation for transmitting frames between the olt and the onuont. Gem gpon encapsulation method supports both native. Gpon gigabitcapable passive optical networks gpon supports. Olt uses gigabit ethernet technologies to transmit and receive data from service node. At step, one or more of the meps responds to the initiation of the method by forming a test message.
Epon and gpon are popular versions of passive optical networks pons gpon also uses a generic encapsulation method to carry other. Longer transmission distance higher bandwidth better user experience on full services higher resource usage with lower costs what is gpon. The gpon standard formulation to consider the support of traditional tdm services, still using the the 125s fixed frame structure to maintain 8k timing continuation. Pdf performance evaluation of gpon vs epon for multi. Min fair algorithm in which a free grant size is spread to heavily loaded onu optical network unit. Pdf this paper gpon in telecommunication network, will present gpon in a. Technique for forwarding packets in a gigabit passive optical. Gpon or gigabit passive optical networks is a pointtomultipoint access mechanism. This article presents a design of a database model used to gather and analyze data frames transmitted over gigabit passive optical network gpon in the downstream direction. Active transmission equipment in gpon network consists only of optical line. Nov 09, 2018 gpon also uses a generic encapsulation method to carry other protocols. Based on the mapping scheme, service traffic is carried to different gem ports and then to different tconts.
1386 411 1222 856 259 473 1354 1262 1556 1076 620 622 1365 1321 877 594 1321 954 1477 178 861 43 1270 313 1127 1272 872 483 62 606 1236 824 637 775