A shared network based on a pon has several advantages over one based on ae. Gpon encapsulation method gem allows very efficient packaging of user traffic, with frame segmentation to allow. Encapsulation method gem transport layer that supports. The gpon multiplexing or framing is explained with the following factors. 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. Encapsulation is also possible in nonobjectoriented languages. A pon reduces the amount of fiber and central office equipment required compared with pointtopoint architectures.
An overview of gpon in the an overview of gpon in the access. Active transmission equipment in gpon network consists only. In this article, a principle of the downstream direction is described. 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. Gem gpon encapsulation method supports both native tdm and data. A gpon encapsulation method gem port is a virtual port for performing gem encapsulation for transmitting frames between the olt and the onuont. Gfp allows direct encapsulation of variable length packets without repeating the encapsulation overhead on a regular basis. Gpon essentials transmission basics gpon multiplexing architecture. Comparing pon types characteristic epon 2004 gpon 2003 bpon late 1990s speed 1250 1250 2488.
Flurbiprofen fb is a derivative of phenylpropionic acid having analgesic and antiinflammatory activity. In the pon the signals are replicated passively by the splitter. Describe characteristics of a passive optical network pon with the capability of. The data is encapsulated with protocol information at each osi reference model layer when a host transmits data to another device across a network. A passive optical network is a form of fiberoptic access network. Users can purchase an ebook on diskette or cd, but the most popular method of getting an ebook is to purchase a downloadable file of the ebook or other reading material from a web site such as barnes and noble to be read from the users computer or reading device. Implementing nextgeneration passive optical network. Gem supports a native transport of voice, video, and data without an added atm or ip encapsulation layer. The second method is that the drug molecule is coordinated to the outer functional groups with ionic interactions. The main problems are the requirement of manual cor. 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.
In objectoriented programming oop, encapsulation refers to the bundling of data with the methods that operate on that data, or the restricting of direct access to some of an objects components. Understanding data encapsulation the sending and receiving of data from a source device to the destination device is possible with the help of networking protocols when data encapsulation is used. This part explains hdlc highlevel data link control protocol and encapsulation method in detail with examples including step by step configuration guide. Section 3 describes the basic principles of gpon access network, the function of. Gpon encapsulation method how is gpon encapsulation. The main contribution of this paper is the analysis of the weak and strong points of the gponxpert equipment. Each onu is configured to recognize which portids belong to it. May 02, 2020 gpon encapsulation method pdf navy pilots added just four more hours during testing and evaluation at the naval air materiel center in philadelphia, pennsylvania. This recommendation identifies gpon encapsulation method gem as the sole data transport. An overview of gpon in thean overview of gpon in the.
Mar 20, 2014 the dendrimer encapsulation method has increased the drug potency and cell specific uptake of camptothecin by the human colon cancer cell lines ht29 morgan et al. Gpon encapsulation method pdf traffic by using gpon encapsulating method. Gpon encapsulation method gem frames are transmitted between the olt and the onuont. Gpon encapsulation method how is gpon encapsulation method. Implementing nextgeneration passive optical network designs. Deep data analysis in gigabit passive optical networks. The gem header includes a gem port id which uniquely identifies a traffic flow or group of traffic flows for a specific uni. The third method describes that the dendrimer acts as a unimolecular micelle comprising a hydrophobic core and a polar surface by encapsulating a drug molecule through the formation of a dendrimerdrug hostguest interaction.
In the above example the data of any of the section like sales, finance or accounts is hidden from any other section. Gem port, tcont, allocid, onuid, portid downstream and upstream tdm architectures gpon stack control and user planes in gpon gpon services. Ptv, voip and internet rf services gpon system management mode. The use of the gpon fiber access technology does allow a significant service delivery increase when compared with traditional xdsl technologies. 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. 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. Each different trafficclass tc per uni is assigned a different gem port. Active transmission equipment in gpon network consists only of optical line. Jul 26, 2019 gpon encapsulation method pdf traffic by using gpon encapsulating method. We can create a fully encapsulated class in java by making all the data members of the class private. Guild of experienced motorists now gem motoring assist. Apr 23, 2015 gpon is a gigabit passive optical network technology and is to date the most widely used mainstream optical access technology. This course will introduce participants to microencapsulation and nanoencapsulation. A data frame transport scheme used in gpon systems that is connectionoriented and that supports fragmentation of the network administrator data frames into.
An overview of gpon in thean overview of gpon in the access. Guideline elements model xmlbased guideline document model gem. Gem allows very efficient packaging of user traffic, with frame segmentation to allow for higher qos for delaysensitive traffic. A passive optical network consists of an optical line terminal olt at the service providers central office hub and a number of optical network units onus or optical network terminals onts, near end users. The invention discloses a management information base mib data uploading method and a gigabit passive optical network gpon. In this paper we deal only with the itu standard gpon, because it is the most commonly used technology in czech republic and slovakia.
Gpon system overview introduction to the gpon system mainstream pon technologies include broadband passive optical network bpon, ethernet passive optical network epon, and gigabit passive optical network gpon. The object takes requests from other client objects, but does not expose the details of. Atm and ethernet for layer 2 data encapsulation so is. Using gpon access in the context of tr101 broadband forum. Ont, olt and mdu in gpon technology linkedin slideshare. The transport layer then passes the segment to the network layer, where the network address for the destination and the source are included in the header. Gpon encapsulation method gem it is the data transport scheme in the specified gpon transmission convergence layer. 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. If the gpon devices support ipv6 or tr069, cdrouter will be able to test this functionality as well. The main contribution of this paper is the analysis of the weak and strong points of. These base functionalities, together with the support for bit rates of up to 2. Stack of protocols for gpon architecture several transmission containers tcont are assigned to each user. Gem gem encapsulation gpon encapsulation method gem.
Fgwgr240bg fiber gateway 4x4 user manual users manual altice. Encapsulation in java is a process of wrapping code and data together into a single unit, for example, a capsule which is mixed of several medicines. A passive optical network pon is a fiberoptic telecommunications technology for delivering broadband network access to endcustomers. Some of the key differences between the gpon and epon standards are guard times, overheads, and. The gtc frames carry traffic between olt and onusonts. Encapsulation is used to hide the values or state of a structured data object inside a class, preventing unauthorized parties direct access to them publicly accessible methods are generally. To support atm multiprotocol, gpon defined an entirely new package structure gem gpon encapsulation method, atm and other protocols can be mixed encapsulation framing. Encapsulation also lead to data abstraction or hiding. Evolusi dari apon bpon model paketisasi data menggunakan gpon encapsulation method gem untuk membawa layanan tdm dan packetbased. Nov 06, 20 for history reasonit is a long story, gpon looked to the new itut g. In c, for example, a structure can be declared in the public api via the header file for a set of functions that operate on an item of data containing data members that are not accessible to clients of the api with the extern keyword.
Now we can use setter and getter methods to set and get the data in it. Fgwgr240bg fiber gateway 4x4 user manual users manual. Combined with the ont, this internal configuration can be conceptualized as follows. The enduser traffic is encapsulated in gem gpon encapsulation method frames, which are carried over the gtc protocol transparently. Scribd is the worlds largest social reading and publishing site. Pdf gpon in telecommunication network researchgate.
Epon or ge pon ethernet pon uses ethernet for data encapsulation. The gtc payload field contains a series of gem gpon encapsulation method frames. Adopting the atm encapsulation mode, bpon is mainly used for carrying atm services. Gem stands for gpon encapsulation method, and this is. Compared to gpon, epon is a relatively simpler standard that requires looser hardware and is less focused on quality of service qos assurance. In this paper, a general study on gpon is done with fbg and without fbg. The fibergateway equipment technology is based on gem gpon encapsulation method, and complies with itut g. Major common encapsulation techniques and formulations will be presented, along with examples, equipment, strengths, weaknesses, and state of the art. The best summary of the process described by the osi model is that networking is a series of.
First of all pon was, atm pon apon which evolved in broadband pon bpon. S1 based on varieties of preset uploading attributes, attributes of all attributes in an optical network unit onu or an mib of an optical network termination ont according with the varieties of the preset uploading. Figure 4 shows the working principle of the gpon network. Gem refers to gpon encapsulation method, and is the native protocol used for transmitting data within a gpon. Additional aspects of encapsulation to be discussed include materials, process scale, and application examples. Its architecture implements a pointtomultipoint topology, in which a single optical fiber serves multiple endpoints by using unpowered passive fiber optic splitters to divide the fiber bandwidth among multiple access points. Aug 10, 2019 gpon encapsulation method pdf traffic by using gpon encapsulating method. Gem provides a connectionoriented, variablelength framing mechanism for transport of data services over the passive optical network pon. With ae the individual signals are split out using electronic equipment near the subscriber. 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. This technical report has been approved by members of the.
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