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1、,10G GPON技术基础,目录,ITU-T G.984.3GPON TC层规格要求GTC复用结构及协议栈介绍GTC帧结构介绍ONU注册激活流程DBA规格要求告警和性能,ITU-T G-984.1/2/3/4,产品开发简单产品兼容性强,ITU-T G.984.1GPON网络参数说明保护倒换组网要求,ITU-T G.984.4OMCI消息结构介绍OMCI设备管理框架OMCI实现原理简述,ITU-T G.984.2PMD层规格要求2.488Gbps下行光接口参数规格要求1.244Gbps上行光接口参数规格要求物理层开销分配,GPON标准协议,广播方式：GPON的下行帧长为固定的125us，下行为广
2、播方式，所有的ONU都能收到相同的数据，但是通过GEMPORT ID来区分不同的业务的数据，ONU 通过过滤来接收属于自己的数据。,GPON原理-下行数据,TDMA方式：GPON的上行是通过TDMA（时分复用）的方式传输数据，上行链路被分成不同的时隙，根据下行帧的upstream bandwidth map字段来给每个ONU分配上行时隙，这样所有的ONU就可以按照一定的秩序发送自己的数据了，不会产生为了争夺时隙而冲突。每帧共有9120个时隙。,GPON原理-上行数据,GPON 协议栈,Physical Control Block Downstream(PCBd),Payload,AllocID
3、,Start,End,AllocID,Start,End,1,100,200,x,300,500,T-CONT1(ONT 1),T-CONT x(ONT 2),Slot 100,Slot 200,Slot 300,Slot 500,PLOu,PLOAMu,PLSu,DBRu x,Payload x,DBRu Y,Payload y,Upstream Bandwidth Map,125us,Downstream Framing,Upstream Framing,GPON帧结构,AllocID,Start,End,y,501,650,1,x,y,T-CONT y(ONT 2),Slot 650,S
4、lot 501,T-CONT x,T-CONT y,目录,Page 9,FSAN把下一代PON分成了两个阶段:NGA1是在TDMA PON的基础上做更高的速度。其速率定义为10Gbps。NGA2是对NG-PON1一些更可能的技术升级和一些模糊目标的探讨。比如象：WDM PON,OFDM 等等。NG-PON可以很好的应用于FTTx，如企业用户，个人用户和移动回传等。,10G GPON的标准发展（1）,Page 10,GPON,XGPON1,NGA1,NGA2,2009,2010,2011,2012,2.5G/10G2010.6 Publish,10G GPON的标准发展（2）,10G/2.5G,
5、ODN reuse,ODN reuse is not obligation,ITU NGA1 XGPON1：10G GPON Asymmetric：Published G.987.1 G.987.3&G.988 was published in June 2010.ITU NGA1 XGPON2：10G GPON Symmetric：Discussion starts in 2010.Q1.One possibility is to overleap symmetric 10G GPON and directly migration to NGA2.ITU NGA2：Start in 2010
6、 Q1 and discuss the technology trend.,XGPON2,WDM-PON,Stacked，40G,10G/10G,Page 11,10G GPON的标准发展（3）,XG-PON1:Asymmetric 10G/2.5G 10G GPONG.987x is based on the GPON standard G.984x，and compatible with G.984.G.987x inherits the GPON characteristic,and also supports the high quality,Overall frame,Service
7、 Type,G.987.1,Physical parameter,System Requirement,TC Layer,OMCI,G.987.3,G.987.2,G.988,G.984.1,G.984.2,G.984.3,G.984.4,Physical Layer,G.987.1，G.987.2：Finished in Oct.2009;G.987.3，G.988(G.OMCI)：Finished in June 2010.,10G GPON产业链发展,10G GPON设备厂家现状,目录,Page 15,10G GPON和GPON产品规格的主要差异,Page 16,GPON V.S.10G
8、 GPON 关键改进点,G-PMD,higher Data rate,Longer distance,Improved Power budget,Larger Split ratio,XG-PMD,G-TC,More effective framing,More flexible DBA,Enhanced Security features,necessary power saving features,XG-TC,GPON OMCI,Backward compatibility with GPON,Adaptive to future use,Generic OMCI,Integrated
9、IOP specs,General requirement,General requirement,WDM coexistence&smooth migration,G.984 series,G.987 series,200803p;200910amd1,200303p;200803amd1,200803p;200902amd1;200911amd2;,200803p;200906amd1;200911amd2;,201001p,201001p,?,?,PHY层的改进体现了运营商对下一代PON设计的基本思路；TC层的改进提供了对下一代PON网络的系统级适配；管理层相对独立，改动影响较小。,Pa
10、ge 17,G.987.1 V.S.G.984.1 通过WDM overlay实现共存,ONU,ONU,ONU,ONU,XG-ONU,GPON OLT,XG-ONU,XG-ONU,XG-ONU,XG-OLT,WDM1r,1550 RF,GPON U/S,XGPON U/S,GPON D/S,XGPON D/S,1260,1280,1290,1330,1480,1500,1575,1580,wavelength plan,WDM overlay,G.984.5amd1,对已部署的GPON ODN网络无影响,Page 18,G.987.2 V.S.G.984.2-更快，更多，更远,Page 19,
11、G.987.3 V.S.G.984.3-增强和改进,TC层对比,Page 20,G.987.3 V.S.G.984.3-增强和改进,Page 21,G.987.3 V.S.G.984.3-分层对比,分层 通过增加一个新的子层实现一个更清晰的协议栈,PLOAM,OMCI,GEM,GTC Framing sublayer,GPON PMD,PLOAM,OMCI,GEM,OMCI adapter,GEM adapter,DBA control,GPON PMD,XG-PON adaptation layer,XGTC PHY adaptation sublayer,GTC Framing subla
12、yer,Header,GEM/XGEM payload,Header,GTC/XGTC payload,User data,GTC/XGTC payload,FEC data,PSBd,Scrambled PHY frame payload,GTC/XGTC frame,P,FEC data,P,FEC data,P,OMCI adapter,GEM adapter,DBA control,GPON adaptation layer,FEC codeword,FEC codeword,FEC codeword,GEM/XGEM framing,GTC/XGTC frame,GTC/XGTC f
13、raming,FEC+scrambling+PHY header,GPON TC layer,XG-PON TC layer,Page 22,G.987.3 V.S.G.984.3 帧结构对比,下行GTC/XGTC帧结构,G.984.3 GTC D/S frame structure,G.987.3 GTC D/S frame structure,PCBd,GTC Payload,Psync,4,byte,PLOAMd,13,byte,US BWmap,N,8,byte,Alloction struction,1,8,byte,Ident,4,byte,Alloction struction,
14、2,8,byte,.,Alloction structionN,8,byte,BIP,1,byte,Plend,4,byte,Plend,4,byte,US BWmap,N,8,byte,FEC Ind,1,bit,REV,1,bit,Superframe counter,30,bit,Blen,12,bit,Alen,12,bit,CRC,8,bit,Alloc,-,ID,12,bit,Flags,12,bit,SStart,2,byte,SStop,2,byte,CRC,1,byte,XGTC header,XGTC Payload,HLend,4,byte,PLOAMds,P,48,by
15、te,BWmap,N,*,8,byte,Alloction struction,1,8,byte,Alloc,-,ID,14,bit,Flags,2,bit,Start time,2,byte,Grant Size,2,byte,BProfile,2,bit,HEC,13,bit,BWmap,N,8,byte,BWMap length,11,bit,PLOAM count,8,bit,HEC,13,bit,Alloction struction,2,8,byte,.,Alloction structionN,8,byte,FWI,1,bit,GTC header,GTC payload,125
16、us,Page 23,上行帧结构,G.984.3 GTC U/S frame structure,G.987.3 GTC U/S frame structure,G.987.3 V.S.G.984.3 帧结构对比,Preamble,Delimiter,BIP,1,byte,ONU,-,ID,1,byte,Ind,1,byte,PLOAMu,13,or,0,byte,DBRu,GTC Payload,DBRu,GTC Payload,Allocation,Allocation,.,DBA,1,|,2,byte,CRC,1,byte,Burst,header,PLOu,ONU,-,ID,10,bi
17、t,Ind,9,bit,BIP,1,byte,DBRu,GTC Payload,DBRu,GTC Payload,Allocation,Allocation,.,BuffOcc,3,byte,CRC,1,byte,HEC,13,bit,XGTC,header,XGTC,Trailer,PLOAMu,0,or,48,byte,burst i,125us,burst j,burst k,Page 24,the fragmentation rule is the same as that of GPON except the pre-emption is not allowed;the idle f
18、rame definition is different from GPON carried in dedicated XGEM Port ID 0 xFFFF;size equal to multiple of 4;the content is not defined.,GEM/XGEM 帧结构,G.984.3 GEM frame structure,G.987.3 GEM frame structure,G.987.3 V.S.G.984.3 帧结构对比,XGEM Payload,XGEM,header,PLI,14,bit,Key Index,2,bit,XGEM Port,-,ID,1
19、6,bit,Options,18,bit,LF,1,bit,HEC,13,bit,GEM Payload,L byte,GEM,header,PLI,12,bit,Port ID,12,bit,PTI,3,bit,HEC,13,bit,Payload,header,Page 25,PLOAM消息,G.987.3 V.S.G.984.3 PLOAM消息对比,ONU ID,Message ID,Data,CRC,Octets,1,1,10,1,ONU ID,Message ID,Message content,MIC,SeqNo,Octets,1-2,3,4,5-40,41-48,Page 26,
20、下行PLOAM消息,G.987.3 V.S.G.984.3 PLOAM消息对比,Page 27,上行PLOAM消息,G.987.3 V.S.G.984.3 PLOAM消息对比,Page 28,增强安全特性,G.987.3 V.S.G.984.3 安全特性对比,Page 29,Page 29,G.988V.S.G.984.4 OMCI对比,和G.984.4相比,除了以下特性增强，G.988整体和G.984.4完全一致 过程更简化 消息更安全 MIB更简洁、更聚焦,目录,Page 31,独立模式,1577,1270,OLT,10G GPON,1490,1310,WDM,OLT,GPON,10G G
21、PON,1577,1270,混合模式,10G GPON和GPON的组网应用模式,Page 32,GPON ONT,OLT,NMS upgrade,GPON MDU,ODN reuse,NMS upgrade,Add new 10G GPON service card，OLT software upgrade,Change the uplink card of MDU，MDU software upgrade,Add new 10G GPON ONT,业务发放流程和GPON保持一致.OLT和MXU的升级流程和GPON保持一致日常运维和GPON保持一致,Add new 10G GPON service card,Uplink card of MDU is changed,GPON,GPON,10GG,ODF,Add WDM module,10G GPON ONT,Add new 10G GPON ONT,Add WDM module,GPON向10G GPON演进,
