10G - Epon mạng quang thụ động ethernet thế hệ kế tiếp

I IK

MANG QUANG THU DON G ETHERNET THE Ht Kt TIEP

Bai bao gidi thieu tong quan ve cong ngtie

mang truy nhap quang thu dgng Ethernet 10

Gigabit theo tieu chuan IEEE Std 802.3avTM￾2009 vdi vai tro la cong nghe mang truy nhap

ke tiep toe do cao co kha nang ho trd ca toe

do doi xCfng hai hifdng 10 Gbit/s va khong ddi

xvfng 10 Gbit/s du'dng len va 1 Gbit/s du'dng

xudng, trong khi van duy tri tfnh tifdng thich

ngu'dc vdi cac thiet bi EPON da dUdc trien

khai.

GIO I THIE U CHUNG

Cimg vdi nhimg tidn bd ciia cdng nghe mang truy

nhdp, cdc loai hinh dich vu duge eung edp bdi cdc

nhd khai thde vidn thdng cftng dang ddn thay ddi;

bdn canh cde dich vu truydn thdng dft Ueu truydn

thdng vide eung cdp bd sung ede dich vu mdi nhu

didn thoai ttdn ndn IP vd dich vu hudng video (IPTV,

Tivi dd phdn gidi cao HD-TV,...). Vdi kha ndng eung

cdp mdt cdch hidu qua vd Mnh td nhidu loai dich vu

khde nhau ttdn cimg mdt ndn tang mang truy edp.

Le Hai Chau

don gidn hda he thdng vd giam gid thdnh eung nhu

didn tich cde tram trung tdm, ede mang truy nhdp

quang thu ddng PON vdi hai edng nghd canh ttanh

ehinh la GPON vd EPON dang duge tridn khai rdng

khdp. Mang quang thu ddng Ethernet (EPON) hidn

nay theo tidu chudn IEEE 802.3ah eung edp tde dd

truy nhdp ddi xiing 1 Gbit/s eho dudng ldn vd dudng

xudng (edn ggi la GE-PON bode IG-EPON). Trong

taong lai, dd ddp img nhu edu vd chdt lugng vd bang

thdng ngdy edng cao eua ede img dung va dich vu

hudng video, dung lugng cua mang truy nhdp thd

hd kd tidp can tidp tac dugc md rdng, nham dap img

cde dich vu hudng video va tich hgp da dich vu ttdn

mdt ndn tdng truy nhdp chung.

Nhdm md rdng tdc dd truy nhap dudng ldn vd dudng

xudng ttong EPON hidn nay ldn mue 10 Gbit/s ttong

khi vdn dam bao khd ndng taong thich nguge vdi

cae thidt bi EPON dd duge tridn khai, td chuc chudn

hda IEEE dd tidn bdnh phat tridn vd chudn hda cdng

nghd mang truy nhdp quang thu ddng Ethernet 10

Gigabit (lOG-EPON). Thdng 3 ndm 2006, IEEE 802.3

TAP CHI CNTT&TT KY 1 (8.2011) I 231