1、QCI( QoS Class Identifier (QCI))是一个标量,是特定接入节点控制承载级数据转发功能的Qos参数索引标识.其承载级数据转发功能包含调度的权重,接纳门限,队列管理门限,链路层协议配置等.  其由运营商预配置到特定的接入节点中.(如eNB)

2、QCI取值范围为1-9。1-4是专门用于GBR业务需要专门的资源分配,而5-9用于非GBR业务.

   每一个 EPS 承载都会分配一个 QCI

   QCI 决定了在一定承载上的IP数据包应该受到怎样的用户平面处理.

QCIResource TypePriorityPacket Delay BudgetPacket Error Loss Rate业务示例
1GBR2100 ms10-2语音会话
2GBR4150 ms10-3视频会话
3GBR350 ms10-3实时游戏
4GBR5300 ms10-6非会话视频(缓存)
5Non-GBR1100 ms10-6IMS信令
6Non-GBR6300 ms10-6视频,交互游戏,P2P文件共享
7Non-GBR7100 ms10-3语音
8Non-GBR8300 ms10-6视频(缓存流),邮件、ftp,交互游戏,P2P文件共享
9Non-GBR9300 ms10-6同 qci=8

参考:

https://tools.ietf.org/id/draft-henry-tsvwg-diffserv-to-qci-03.html

QCI/5QIResource TypePriority LevelExample ServicesRecommended DSCP (PHB)
1GBR2Conversational Voice44 (VA)
2GBR4Conversational Video (Live Streaming)35 (N.A.)
3GBR3Real Time Gaming, V2X messages, Electricity distribution (medium voltage) Process automation (monitoring)19 (N.A.)
4GBR5Non-Conversational Video (Buffered Streaming)37 (N.A.)
65GBR0.7Mission Critical user plane Push To Talk voice (e.g., MCPTT)42 (N.A.)
66GBR2Non-Mission-Critical user plane Push To Talk voice43 (N.A.)
67GBR1.5Mission Critical Video user plane33 (N.A.)
75GBR2.5V2X messages17 (N.A.)
71GBR5.6Live uplink streaming35 (N.A.)
72GBR5.6Live uplink streaming35 (N.A.)
73GBR5.6Live uplink streaming35 (N.A.)
74GBR5.6Live uplink streaming35 (N.A.)
76GBR5.6Live uplink streaming35 (N.A.)
82GBR1.9Discrete automation (small packets)25 (N.A.)
83GBR2.2Discrete automation (large packets)27 (N.A.)
84GBR2.4Intelligent Transport Systems31 (N.A.)
85GBR2.1Electricity Distribution – High Voltage23 (N.A.)
86GBR1.8Intelligent Transport Systems29 (N.A.)
5Non-GBR1IMS Signalling40 (CS5)
6Non-GBR6Video (Buffered Streaming) TCP-based (e.g. www, email, chat, ftp, p2p file sharing, progressive video)10 (AF11)
7Non-GBR7Voice, Video (live streaming), interactive gaming38 (AF43)
8Non-GBR8Video (buffered streaming) TCP-based (e.g. www, email, chat, ftp, p2p file sharing, progressive video)12 (AF12)
9Non-GBR9Same as 814 (AF13)
69Non-GBR0.5Mission Critical delay sensitive signalling (e.g., MC-PTT signalling, MC Video signalling)41 (N.A.)
70Non-GBR5.5Mission Critical Data (e.g. example services are the same as QCI 6/8/9)20 (AF22)
79Non-GBR6.5V2X messages21 (N.A.)
80Non-GBR6.8Low latency eMMB applications (TCP/UDP-based); augmented reality32 (CS4)

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