Kwatanta samun damar FTTX na tushen PON guda biyar

Hanyar hanyar sadarwar bandwidth mai girma na yanzu tana 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 tarawacanzana wurin zama ko ginin, sa'an nan kuma haɗi zuwa corridorcanzata hanyar fiber na gani (0.95km), sannan a tura shi zuwa ƙarshen mai amfani ta amfani da kebul na Category 5 (0.05km). An ƙididdige shi bisa ga ƙirar mai amfani 500 (ba tare da la'akari da farashin ɗakin tantanin ba), aƙalla tarawar tashar tashar jiragen ruwa 24 guda ɗaya.canzada 21 24-port corridormasu sauyawaana bukata. A ainihin amfani, ƙarin matakincanzagabaɗaya ana ƙarawa. Ko da yake jimlar yawanmasu sauyawayana ƙaruwa, yin amfani da samfuran ƙananan farashi na corridormasu sauyawayana rage yawan farashi.

FTTH

Yi la'akari da sanya waniOLTa babban ofishin, fiber na gani guda daya (4km) zuwa dakin kwamfuta ta salula, a cikin dakin kwamfuta ta tsakiya ta hanyar 1:4 na gani mai rarrabawa (0.8km) zuwa corridor, da kuma 1:8 Optical splitter (0.2km). ) a cikin tashar masu amfani da corridor. An ƙididdige shi bisa ga ƙirar mai amfani 500 (ba tare da la'akari da farashin ɗakin tantanin halitta ba): FarashinOLTAn ware kayan aiki akan sikelin masu amfani da 500, suna buƙatar jimillar 16OLTtashoshin jiragen ruwa.

FTTC+EPON+LAN

Hakanan la'akari da sanyawaOLTa babban ofishin. 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. KowanneONUyana da aikin sauyawa Layer 2. Ganin cewaONUsanye take da tashoshin jiragen ruwa 16 FE, wato kowanneONUzai iya samun dama ga masu amfani 16, wanda aka ƙididdige shi bisa ga tsarin mai amfani 500.

FTTC+EPON+ADSL/ADSL2+

Don aikace-aikacen guda ɗaya na DSLAM sauƙaƙa ƙasa, la'akari da sanya waniOLTa ofishin tsakiya, da fiber guda ɗaya (5km) daga ofishin ƙarshe na BAS zuwa ofishi na ƙarshe, kuma a babban ofishi na ƙarshe, ya wuce ta hanyar 1: 8 na gani (4km) zuwaONUa cikin dakin salula na kwamfuta. TheONUan haɗa kai tsaye zuwa DSLAM ta hanyar FE, sannan an haɗa shi zuwa ƙarshen mai amfani tare da murɗaɗɗen igiya (1km) tagulla. 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 tarawacanzana al'umma ko ginin, sannan a tura kai tsaye zuwa ƙarshen mai amfani ta hanyar fiber optic (1km). An ƙididdige shi bisa ga ƙirar mai amfani 500 (ba tare da la'akari da farashin ɗakin tantanin ba), aƙalla 21 24-tashar tashar jiragen ruwamasu sauyawaAna buƙatar, kuma nau'i-nau'i 21 na kilomita 4 na kashin baya an shimfiɗa su daga ɗakin kwamfuta na ofishin tsakiya zuwa tarawa.masu sauyawaa cikin tantanin halitta. Tunda ba a saba amfani da Ethernet na gani-zuwa-maki don samun damar watsa labarai a wuraren zama, gabaɗaya 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.