Kwatanta samun damar FTTX na tushen PON guda biyar

Hanyar hanyar sadarwar bandwidth mai girma na yanzu ta dogara ne akan hanyar FTTX ta tushen PON.Babban al'amurran da zato da ke tattare da nazarin farashi sune kamar haka:

● Kudin kayan aiki na sashin shiga (ciki har da kayan aiki daban-daban da kuma layi, da dai sauransu, matsakaici ga kowane mai amfani da layi)

●Haɗin kuɗin aikin injiniya (ciki har da kuɗin gini da sauran kuɗin da ake kashewa, gabaɗaya 30% na jimlar farashin kayan aiki)

● Kudin aiki da kulawa (yawanci game da 8% na jimlar farashin kowace shekara)

●Ba a la'akari da ƙimar shigarwa (wato, adadin shigarwa shine 100%).

● Ana ƙididdige farashin kayan aikin da ake buƙata bisa ga samfuran masu amfani 500

Lura 1: Samun damar FTTX baya la'akari da farashin ɗakin kwamfutar al'umma;

Lura 2: ADSL2+ ba shi da fa'ida idan aka kwatanta da ADSL lokacin da nisan shiga ya kasance 3km.A halin yanzu ba a yi amfani da VDSL2 sosai ba, don haka ba za a yi kwatancen lokaci ba;

Lura 3: Samun damar fiber na gani yana da fa'idodi a bayyane a nesa mai nisa.

FTTB+LAN

Ana bi da ofishin tsakiya ta hanyar fiber na gani (3km) zuwa madaidaicin mahaɗar wurin zama ko ginin, sannan a haɗa shi da madaidaicin hanyar ta hanyar fiber na gani (0.95km), sannan a tura shi zuwa ƙarshen mai amfani ta amfani da kebul na Category 5 (0.05). km).An ƙididdige shi bisa ga tsarin mai amfani na 500 (ba tare da la'akari da farashin ɗakin tantanin halitta ba), ana buƙatar aƙalla haɗin haɗin tashar tashar jiragen ruwa 24 da 21 24-port corridor switches.A ainihin amfani, ana ƙara ƙarin matakin sauyawa gabaɗaya.Ko da yake jimillar maɓallai yana ƙaruwa, amfani da ƙima mai ƙima na maɓalli na corridor yana rage jimillar farashi.

FTTH

Yi la'akari da sanya OLT a ofishin tsakiya, fiber na gani guda ɗaya (4km) zuwa ɗakin tsakiyar kwamfuta ta salula, a cikin ɗakin ɗakin kwamfuta ta tsakiya ta hanyar 1: 4 na gani (0.8km) zuwa corridor, da kuma 1: 8 na gani. splitter (0.2km) a cikin tashar mai amfani da corridor.An ƙididdige shi bisa ga samfurin 500-mai amfani (ba tare da la'akari da farashin ɗakin tantanin halitta ba): Farashin kayan aikin OLT an keɓe shi akan sikelin masu amfani da 500, yana buƙatar jimlar 16 OLT tashar jiragen ruwa.

FTTC+EPON+LAN

Hakanan la'akari da sanya OLT a ofishin tsakiya.Za a aika fiber optic guda ɗaya (kilomita 4) zuwa tsakiyar ɗakin kwamfuta na al'umma.Babban dakin kwamfuta na al'umma zai wuce ta hanyar 1: 4 na gani (0.8km) zuwa ginin.A kowane corridor, za a yi amfani da 1:8 mai raba gani (0.2km).) Je zuwa kowane bene, sa'an nan kuma haɗa zuwa tashar mai amfani tare da layukan Category 5.Kowane ONU yana da aikin sauya Layer 2.Idan aka yi la’akari da cewa ONU tana da tashoshin jiragen ruwa 16 FE, wato, kowane ONU na iya samun damar masu amfani da 16, wanda aka ƙididdige su bisa tsarin masu amfani da 500.

FTTC+EPON+ADSL/ADSL2+

Don aikace-aikacen guda ɗaya na DSLAM sauƙaƙa ƙasa, la'akari da sanya OLT a ofishin tsakiya, da fiber guda ɗaya (5km) daga ofishin ƙarshen BAS zuwa babban ofishi na ƙarshe, kuma a babban ofishin ƙarshe, ya wuce ta 1: 8 na gani. splitter (4km) zuwa ONU a cikin dakin kwamfuta na cibiyar salula.Ana haɗa ONU kai tsaye zuwa DSLAM ta hanyar FE interface, sannan an haɗa shi zuwa ƙarshen mai amfani tare da murɗaɗɗen igiya guda biyu (1km).Hakanan ana ƙididdige shi bisa tsarin mai amfani 500 da aka haɗa da kowane DSLAM (ba tare da la'akari da farashin ɗakin tantanin halitta ba).

Ethernet na gani-zuwa-aya

Ana tura ofishin tsakiya ta hanyar fiber na gani (4km) zuwa maɓalli na al'umma ko ginin, sannan a tura kai tsaye zuwa ƙarshen mai amfani ta hanyar fiber na gani (1km).An ƙididdige shi bisa ga tsarin mai amfani 500 (ba tare da la'akari da farashin ɗakin tantanin ba), aƙalla 21 24-port aggregation switches ana buƙatar, kuma nau'i-nau'i 21 na kilomita 4 na fiber na gani na kashin baya an shimfiɗa su daga ɗakin kwamfuta na ofishin tsakiya zuwa tarawa. canzawa a cikin tantanin halitta.Tunda ba a saba amfani da Ethernet na gani-zuwa-maki don samun damar watsa labarai a wuraren zama, ana amfani da shi ne kawai don sadarwar tarwatsa mahimman masu amfani.Don haka sashen gininsa ya bambanta da sauran hanyoyin shiga, don haka hanyoyin lissafin ma sun bambanta.

Daga binciken da aka yi a sama, ana iya ganin cewa sanyawa na mai rarraba na gani zai yi tasiri kai tsaye a kan amfani da fiber, wanda kuma ya shafi farashin ginin cibiyar sadarwa;Farashin kayan aikin EPON na yanzu yana iyakancewa ta hanyar fashewar watsawar gani/karɓar kayan aiki kuma ana saukar da babban tsarin sarrafawa / Chips da E-PON farashin module don biyan bukatun kasuwa;idan aka kwatanta da xDSL, farashin shigar da PON na lokaci ɗaya ya fi girma, kuma a halin yanzu ana amfani da shi a cikin sabbin gine-ginen da aka gina ko aka sake ginawa.Ethernet na gani-zuwa-aya ya dace da tarwatsa gwamnati da abokan cinikin kasuwanci saboda tsadar sa.Yin amfani da FTTC+E-PON+LAN ko FTTC+EPON+DSL shine mafi kyawun mafita don canzawa a hankali zuwa FTTH.