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I
目 次
目 次........................................................................................................................................... I
前 言...........................................................................................................................................III
1 范围...............................................................................................................................................4
2 规范性引用文件...........................................................................................................................4
3 术语和定义...................................................................................................................................4
3.1 ONT和ONU ...............................................................................................................................4
3.2 数据业务成帧方式和GEM的关系...........................................................................................4
3.3 上行ONU流量控制设备...........................................................................................................5
4 缩略语...........................................................................................................................................7
5 GTC概述 .......................................................................................................................................8
5.1 概述............................................................................................................................................8
5.2 C/M平面协议栈 .........................................................................................................................9
5.3 U平面协议栈............................................................................................................................10
5.4 GTC关键功能 ..........................................................................................................................11
5.5 GTC各子层功能 ......................................................................................................................12
5.6 业务流与QoS..........................................................................................................................13
5.7 DBA规定 ..................................................................................................................................13
6 GTC成帧 .....................................................................................................................................14
6.1 概述..........................................................................................................................................14
6.2 下行帧结构..............................................................................................................................15
6.3 上行帧结构..............................................................................................................................19
6.4 业务流到GTC净荷的映射 .....................................................................................................22
6.5 动态带宽分配信令和配置......................................................................................................25
7 GTC消息 .....................................................................................................................................28
7.1 概述..........................................................................................................................................28
7.2 PLOAM消息格式.....................................................................................................................28
7.3 Control消息..............................................................................................................................29
8 激活方式.....................................................................................................................................42
8.1 概述..........................................................................................................................................42
8.2 ONU激活概述..........................................................................................................................42
8.3 ONU状态..................................................................................................................................44
8.4 ONU功能转移..........................................................................................................................46
8.5 ONU事件..................................................................................................................................48
8.6 在O3 和O4 状态下的安静时长 .............................................................................................50
8.7 ONU定时..................................................................................................................................51
8.8 功率电平调整..........................................................................................................................53
9 告警和性能监测.........................................................................................................................53
9.1 告警..........................................................................................................................................54
9.2 性能监测..................................................................................................................................57
