Niki PON ikingiwe guhinduranya?

Hamwe nimibare yiyongera ya serivisi itwarwa na Passive Optical Networks (PON), byabaye ngombwa kugarura byihuse serivisi nyuma yo kunanirwa kumurongo. Ikoreshwa rya tekinoroji yo gukingira PON, nkigisubizo cyibanze kugirango ubucuruzi bukomeze, bitezimbere cyane kwizerwa ryurusobe mugabanya igihe cyo guhagarika imiyoboro kugeza munsi ya 50m binyuze muburyo bwo kugabanya ubwenge.

Intangiriro yaPONguhinduranya kurinda ni ukwemeza ubucuruzi bukomeza binyuze muburyo bubiri bwububiko bwa "primaire + backup".

Igikorwa cyacyo kigabanyijemo ibyiciro bitatu: icya mbere, murwego rwo gutahura, sisitemu irashobora kumenya neza kuvunika kwa fibre cyangwa ibikoresho byananiranye muri 5ms binyuze muguhuza kugenzura ingufu za optique, gusesengura igipimo cyamakosa, nubutumwa bwumutima; Mugihe cyicyiciro cyo guhinduranya, ibikorwa byo guhinduranya bihita bikururwa hashingiwe kubikorwa byateguwe mbere, hamwe nubukererwe busanzwe bwo guhinduranya bugenzurwa muri 30ms; Hanyuma, mugice cyo kugarura, kwimuka kutagira ibipimo byubucuruzi 218 nkibikorwa bya VLAN hamwe nogutanga umurongo bigerwaho hifashishijwe moteri yo guhuza iboneza, kwemeza ko abakoresha amaherezo batabizi rwose.

Amakuru nyayo yoherejwe yerekana ko nyuma yo gukoresha ubwo buhanga, igihe cyo guhagarika buri mwaka imiyoboro ya PON irashobora kugabanuka kuva kumasaha 8.76 ikagera kumasegonda 26, kandi kwizerwa birashobora kunozwa inshuro 1200. Inzira nyamukuru yo gukingira PON ikubiyemo ubwoko bune, Ubwoko A kugeza Ubwoko D, bukora sisitemu yubuhanga yuzuye kuva shingiro kugeza imbere.

Ubwoko A (Trunk Fiber Redundancy) ifata igishushanyo mbonera cyicyambu cya PON kuruhande rwa OLT kugabana MAC chip. Ishiraho primaire na backup fibre optique ihuza binyuze muri 2: N igabanya kandi igahinduka muri 40ms. Igikoresho cyacyo cyo guhindura ibyuma byiyongera gusa 20% byumutungo wa fibre, bigatuma bikwiranye cyane nigihe gito cyo kohereza nko mumiyoboro yikigo. Ariko, twakagombye kumenya ko iyi gahunda ifite aho igarukira ku kibaho kimwe, kandi ingingo imwe yo kunanirwa gutandukana ishobora gutera guhuza ibice bibiri.

Birenzeho Ubwoko B (OLT port redundancy) ikoresha ibyambu bibiri bya chip yigenga ya MAC kuruhande rwa OLT, ishyigikira uburyo bukonje / bushyushye, kandi irashobora kwagurwa muburyo bubiri bwakiriwe muri OLTs. MuriFTTHIkizamini cya scenario, iki gisubizo cyageze kumurongo wimuka wa 128 ONU muri 50m, hamwe nigipimo cyo gutakaza paki ya 0. Byakoreshejwe neza muri sisitemu yo kohereza amashusho 4K mumasaka ya tereviziyo yintara na tereviziyo.

Ubwoko C (kurinda fibre yuzuye) ikoreshwa binyuze mumugongo / gukwirakwiza fibre ebyiri zoherejwe, zifatanije na ONU ya optique ya module ya optique, kugirango itange impera-iherezo kuri sisitemu yubucuruzi bwimari. Yageze kuri 300ms ikosora amakosa muguhana ibicuruzwa, byujuje byuzuye icyiciro cya kabiri cyo kwihanganira uburyo bwo gucuruza ibicuruzwa.

Urwego rwohejuru Ubwoko D (sisitemu yuzuye ishyushye) ikoresha igishushanyo mbonera cya gisirikari, hamwe nubugenzuzi bubiri hamwe nubwubatsi bwindege ebyiri kuri OLT na ONU, bishyigikira ibice bitatu bya fibre / port / amashanyarazi. Urubanza rwoherejwe na 5G base base rehaux rezo yerekana ko igisubizo gishobora gukomeza gukora 10m urwego rwo guhinduranya imikorere yibidukikije bikabije bya -40 ℃, hamwe nigihe cyo guhagarika buri mwaka kigenzurwa mumasegonda 32, kandi cyatsinze icyemezo cya gisirikare cya MIL-STD-810G.

Kugirango ugere ku guhinduranya, ibibazo bibiri bya tekiniki bigomba kuneshwa:

Kubyerekeranye no guhuza iboneza, sisitemu ikoresha tekinoroji itandukanye yo kongera ikorana buhanga kugirango harebwe niba ibipimo 218 bihamye nka politiki ya VLAN na QoS bihuye. Muri icyo gihe, ihuza amakuru yingirakamaro nka MAC ya adresse ya MAC hamwe nubukode bwa DHCP binyuze muburyo bwihuse bwo gusubiramo, kandi ikazungura urufunguzo rwumutekano rushingiye kumuyoboro wa AES-256;

Mu cyiciro cyo kugarura serivisi, hashyizweho uburyo butatu bwo gutanga ingwate - hifashishijwe protocole yihuse yo kuvumbura kugirango ugabanye igihe cyo kwiyandikisha kwa ONU kugeza mu masegonda 3, algorithm ya drainage yubwenge ishingiye kuri SDN kugirango igere kuri gahunda nyayo yumuhanda, hamwe na kalibrasi yikora yibipimo byinshi nkibikoresho bya optique / gutinda.