Kev sib txawv ntawm cov tous thoob gonpon, epon, thiab xg (s)
TusChav tsev kho kho kho kho qhov muag (ONU)sib txawv cuam tshuam thoob plawsGon, epon, thiab xg (s)Vim yog sib txawv hauvCov Qauv Txheej Txheem, Cov Ntaub Ntawv Cov Ntaub Ntawv, thiab cov cai ua haujlwmCov. Hauv qab no yog cov ncauj lus kom ntxaws kev sib piv.
1. Raws Cai & Qauv
| Pon Hom | Lub hom phiaj | UAS UAS TXOJ CAI / DUA DEJ | Qhov tseem ceeb tswj lub cev |
|---|---|---|---|
| Gon | ITU-T G.984 | 2.488 GBPS / 1.244 GBPS | Nws yog |
| Epon | Ieee 802.3ah | 1.25 gbps (symmetrical) | Mee |
| XG (s) -con | ITU-T G.987 (xg-Pon) / G.9807 (xgs-Pon) | 10 gbps (asym / sym) | Nws yog |
Cov Ntsiab siv rau Onus:
Gion forusraws qabITU-T G.984.3 / 4, TxhawbLub pov scapsulationthiabOMCI tswj.
Epon Onusua raws liIeee 802.3ah, sivHaiv Neeg Ethernet NtasthiabMPCP tswj.
XG (s) -pon onustoob kasCov Optics Ceev Tshaj(10GBps) thiab rov qab zoo sib xws (piv txwv li,XGS-Pon ONUS tuaj yeem ua ke nrog gponntawmWDM1R).
2. Txheej ntawm lub cev (optics & wavelengths)
| Chaw ua uas tsis tau haus | Gppon onu | Epon onu | XG (s) -Pon onu |
|---|---|---|---|
| Downstreir λ | 1490 nm | 1490 nm (yeem) | 1577 nm (xgs-pon) |
| Nqe λ | 1310 nm | 1310 nm | 1270 nm (xgs-pon) |
| Optical Zog rhiab | {{0 {}} dbm (chav kawm b +) | -27 dbm (Prx30) | -28 dbm (n2 chav kawm) |
| Laser hom | DFB (qis chirp) | Fp / DFB | EML (10G muaj peev xwm) |
Qhov sib txawv tseem ceeb:
XG (s) -pon onustoob kastawg-hom lasersnrog cov sijhawm teb sai sai (vim yogCov kab qib siab).
Epon Onusfeem ntau siv pheej yig duaFabry-pérot (FP) lasers, thaumGPPON / XGS-Pon yuam cai DFB / Eml lasersrau kev ruaj khov.
WDM sib txaws:
XGS-Pon ONUUSyuav tsum zam kev cuam tshuam nrogGon (1577nm vs. 1490Nm).
Qee qhov kev txhawb nqa OUSDual-Hom (GPON + XGS-PON)ntawmCombo Pon.
3. Cov ntaub ntawv txuas txheej (Framing & motionxing)
| Yam zoo | Gppon onu | Epon onu | XG (s) -Pon onu |
|---|---|---|---|
| Encapsulation | Lub pov haum (GPPIF Encpapulation Kev Cai) | Haiv Neeg Ethernet (802.3) | Xgem (Txhim Kho Lub pov haum) |
| Bandwidth tswj | T-content (DBA ntawm OMCI) | MPCP (GATE / QHIA MSGS) | T-cont (zoo ib yam li gpon) |
| Kev txhawb nqa fec | Yuav tsum tau (RS (255,239)) | Yam ua tau | Yuav tsum tau (muaj zog fec) |
Qhov sib txawv tseem ceeb:
GPPON / XGS-PON ONUSUSkev sivItu-txhais lub pov haum / Xgemrau kev ua kom zoo.
Epon Onusvam khomEthernet Mac-Txheej Tswj (Mpcp), ua rau lawv yooj yim dua tab sis tsis muaj dua granular hauv QOS.
XGS-Pon ONUUSevsiab dua-grandularity DBA(txog li 10GBs ib onu).
4. Kev tswj hwm & tswj cov txheej txheem
| Tswj nam | Gppon onu | Epon onu | XG (s) -Pon onu |
|---|---|---|---|
| Tswj raws tu qauv | OMCI (G.988) | Oam (802.3ah) | OMCI (txhim kho rau 10g) |
| Kev tuav | Zawv / Password | SN / MAC LILO | Laub / Password + Sn |
| Kev tsis muaj teeb meem | AES -128 (ownstream) | MacSec (yeem) | AES -128 (yuav tsum tau) |
Qhov sib txawv tseem ceeb:
GPPON / XGS-PON ONUSUSkev sivOmciRau kev tswj hwm tag nrho (vlan, qos, fw hloov tshiab).
Epon Onusvam khomOames txuas ntxiv, txwv cov ntsiab lus tshaj lij (piv txwv li, tsis muaj built-in voip config).
XGS-Pon ONUUStoob kasMuaj zog encryptionVim muaj kev sib kis tau ntau dua.
5. Lub hwj chim ua haujlwm & Tsim Kho Vajtse
| Chaw ua uas tsis tau haus | Gppon onu | Epon onu | XG (s) -Pon onu |
|---|---|---|---|
| Kev siv fais fab | 3-5W | 3-4W | 6-8} w (10g ua) |
| Thermal Tsim | Kev Lag Luam (0-40 degree) | Kev Lag Luam (0-40 degree) | Txuas ({-40 ~ 75 degree rau kev lag luam) |
| Txoj hau me | Broadcom, Realtek | Cortina, Intel | Broadcom, Shtop |
Qhov sib txawv tseem ceeb:
XG (s) -pon onustoob kassiab dua-zog optics & DSPs, Ua rau cov cua sov dissipation xav tau.
Epon Onusfeem ntauTus nqi qisVim yooj yim silicon (tsis muaj lub pov haum ua).
Gion forusDominate kev ua lag luam, txiaj ntsig los ntawmKev lag luam ntawm nplai.
6. Kev tsiv teb tsaws & sib xyaw
(1) gonon → xgs-Pon tsiv teb tsaws
WDM1R COEXISTENTIA: Goncon (1490Nm) thiab xgs-Pon (1577nM) tuaj yeem sib qhia tib cov fiber.
Combo Pon Odtspubsib xyaw ntawm hom(Gon + Xgs-Pon).
(2) Epon → 10g-epon
10g-epon onus(Ieee 802.3V) siv1577nm ownstream / 1270nmm.
Tsis thim rov qabNrog 1g epon (tsis zoo GPON / XGS-PON).
(3) onu interoyceity
Gion forusyuav tsum phimOlt Tus Muag Khoom Profiles(piv txwv li, huawei vs. Nokia omci txuas ntxiv).
Epon Onusyog ntau tus neeg muag khoom-agnostic (tus qauv eternet).
Ntsiab lus: Cov yuam sij ntawm dos sib txawv
| Yam | Gppon onu | Epon onu | XG (s) -Pon onu |
|---|---|---|---|
| Lub hom phiaj | ITU-T G.984 | Ieee 802.3ah | ITU-T G.987 / G.9807 |
| Hov ceev | 2.5G/1.25G | 1.25g symmetric | 10g (sym / asym) |
| Encapsulation | Lub hlawv | Ethernet | Xgem |
| Kev tswj | Omci | Qaxug | OMCI (txhim kho) |
| Laser hom | DFB | Fp / DFB | Eml |
| Siv cov ntaub ntawv | Loj-Ua Lag Luam Ftth | Enterprise / Asia Ftth | 10G FTTH / 5G XIB |
