┌─────────────┐     PCEP     ┌─────────────┐     BGP-LS     ┌─────────────┐
│  Intent     │ ───────────► │   PCE/SDN   │ ─────────────► │  Border     │
│  Controller │              │  Controller │                │  Router     │
└─────────────┘              └─────────────┘                └─────────────┘
       │                            │                              │
       │ NETCONF/YANG               │ PCInitiate                   │ SRv6 Policy
       ▼                            ▼                              ▼
┌─────────────┐              ┌─────────────┐              ┌─────────────┐
│  Network    │              │  Path       │              │  Forwarding │
│  Slice      │              │  Computation│              │  Plane      │
│  Orchestrator       │              │  Engine     │              │  (Data)     │
└─────────────┘              └─────────────┘              └─────────────┘

Minimize: α·Delay + β·Jitter + γ·Loss + δ·Cost
Subject to: 
  Delay ≤ SLA_Delay_TH
  Jitter ≤ SLA_Jitter_TH  
  Loss ≤ SLA_Loss_TH
  Slice_BW_Used ≤ Slice_BW_Quota

用户意图（自然语言/北向API）
        │
        ▼
┌───────────────────────┐
│  Intent Translator    │  ← NLP语义解析 + 知识图谱映射
│  - 切片类型识别       │
│  - SLA参数提取        │
│  - 资源约束推导       │
└───────────────────────┘
        │
        ▼
┌───────────────────────┐
│  Policy Generator     │  ← 基于模板的策略实例化
│  - SRv6 Policy模板    │
│  - QoS Profile映射    │
│  - 监控策略绑定       │
└───────────────────────┘
        │
        ▼
   下发执行引擎

module ietf-media-aware-slice {
  namespace "urn:ietf:params:xml:ns:yang:ietf-media-aware-slice";
  prefix mas;

  import ietf-network-slice-service { prefix nss; }
  import ietf-srv6-policy { prefix srv6; }

  augment "/nss:network-slice-services/nss:slice-service/nss:qos-profile" {
    description "媒体流感知QoS参数增强";
    container media-qos-extension {
      leaf codec-type { type enumeration { enum h264; enum h265; enum av1; enum vp9; } }
      leaf frame-rate { type uint8; units fps; }
      leaf gop-structure { type string; description "如IBBP, 低延迟模式建议IPP"; }
      leaf max-burst-duration { type uint32; units ms; description "允许突发持续时间"; }
      leaf qoe-target { type decimal64 { fraction-digits 1; } range "3.5 .. 5.0"; description "ITU-T P.1203 MOS目标值"; }
      leaf jitter-buffer-hint { type uint16; units ms; description "建议客户端抖动缓冲下限"; }
    }
  }

  augment "/nss:network-slice-services/nss:slice-service/nss:connection-group" {
    description "流级感知策略绑定";
    list flow-awareness-policy {
      key "policy-id";
      leaf policy-id { type string; }
      leaf flow-match { 
        type union { 
          type nss:flow-match-criteria; 
          type mas:media-flow-signature; 
        } 
      }
      uses srv6:srv6-policy-ref;  // 关联SRv6 Policy实例
      container scheduling-weight {
        leaf latency-weight  { type uint8; default 40; }
        leaf jitter-weight   { type uint8; default 30; }
        leaf loss-weight     { type uint8; default 20; }
        leaf cost-weight     { type uint8; default 10; }
      }
    }
  }

  grouping media-flow-signature {
    description "媒体流特征指纹，用于DPI/分类器快速匹配";
    leaf protocol-stack { type enumeration { enum rtp-rtcp; enum srt; enum rist; enum quic-webtransport; enum ll-hls; enum dash; } }
    leaf payload-type   { type uint8; }      // RTP PT
    leaf ssrc-range     { type string; }     // SSRC范围正则
    leaf sni-pattern    { type string; }     // TLS SNI匹配规则
    leaf quic-cid-len   { type uint8; }      // QUIC Connection ID长度
  }
}

┌─────────────────────────────────────────────────────────────┐
│                    Digital Twin Platform                     │
├─────────────────────┬───────────────────────────────────────┤
│   Offline Twin      │           Online Twin                  │
│   (预演/规划)       │           (实时/运维)                  │
├─────────────────────┼───────────────────────────────────────┤
│ • 拓扑克隆(GraphDB) │ • 实时拓扑同步(BGP-LS/IS-IS LSDB)      │
│ • 流量画像回放      │ • 遥测流注入                           │
│ • 策略仿真引擎      │ • 影子策略下发验证                     │
│ • 压力测试/混沌工程 │ • What-If分析(单链路/节点故障模拟)     │
│ • 输出: 变更风险报告│ • 输出: 优化建议/自愈动作              │
└─────────────────────┴───────────────────────────────────────┘

┌──────────────┐     Intent API (TMF 921A)      ┌──────────────────┐
│  业务门户/    │ ─────────────────────────────► │  切片域编排器     │
│  企业专线自助 │  CreateSliceIntent             │  (Domain Orch)   │
└──────────────┘                                └────────┬─────────┘
                                                          │
                              ┌───────────────────────────┼───────────────────────────┐
                              ▼                           ▼                           ▼
                     ┌─────────────────┐         ┌─────────────────┐         ┌─────────────────┐
                     │  骨干域控制器    │         │  城域域控制器    │         │  边缘域控制器    │
                     │  (PCE/SDN)      │         │  (PCE/SDN)      │         │  (MEC/UPF Ctrl) │
                     └────────┬────────┘         └────────┬────────┘         └────────┬────────┘
                              │                           │                           │
                     NETCONF/YANG/PCEP            NETCONF/YANG/PCEP            PFCP/NETCONF
                              │                           │                           │
                              ▼                           ▼                           ▼
                     ┌─────────────────┐         ┌─────────────────┐         ┌─────────────────┐
                     │  骨干网设备      │         │  城域网设备      │         │  UPF/PE/MEC     │
                     │  (P/PE Router)  │         │  (Agg/Access)   │         │  (Edge Node)    │
                     └─────────────────┘         └─────────────────┘         └─────────────────┘

<config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
  <sr-policies xmlns="urn:ietf:params:xml:ns:yang:ietf-srv6-policy">
    <policy>
      <name>Slice-1001-4K-Live-Primary</name>
      <color>1001</color>
      <endpoint>2001:db8:1001::1</endpoint>
      <candidate-paths>
        <path>
          <preference>100</preference>
          <name>Path-A-LowLatency</name>
          <segment-lists>
            <segment-list>
              <weight>1</weight>
              <segments>
                <sid>2001:db8:pe1::dt46</sid>
                <sid>2001:db8:p1::slice-1001</sid>
                <sid>2001:db8:pe2::dt46</sid>
              </segments>
            </segment-list>
          </segment-lists>
          <constraints>
            <te-metric-type>latency</te-metric-type>
            <max-delay>10000</max-delay>  <!-- 微秒 -->
            <max-jitter>500</max-jitter>
            <min-bandwidth>50000000</min-bandwidth>  <!-- bps -->
            <slice-id>1001</slice-id>
          </constraints>
        </path>
      </candidate-paths>
      <binding-sid>
        <sid>2001:db8:headend::bsid-1001</sid>
      </binding-sid>
    </policy>
  </sr-policies>
</config>

{
  "subscription": [
    {
      "path": [
        { "elem": { "name": "network-slice", "key": { "slice-id": "1001" } } },
        { "elem": { "name": "media-flow-stats" } }
      ],
      "mode": "SAMPLE",
      "sample_interval": 1000000000,
      "heartbeat_interval": 30000000000
    }
  ],
  "use_aliases": false,
  "encoding": "PROTO"
}