Domain-Driven Design: WiFi-DensePose Domain Model

Bounded Contexts

1. Signal Domain

Purpose: Raw CSI data acquisition and preprocessing

Aggregates:

• CsiFrame: Raw CSI measurement from WiFi hardware
• ProcessedSignal: Cleaned and feature-extracted signal

Value Objects:

• Amplitude: Signal strength measurements
• Phase: Phase angle measurements
• SubcarrierData: Per-subcarrier information
• Timestamp: Measurement timing

Domain Services:

• CsiProcessor: Preprocesses raw CSI data
• PhaseSanitizer: Unwraps and cleans phase data
• FeatureExtractor: Extracts signal features

2. Pose Domain

Purpose: Human pose estimation from processed signals

Aggregates:

• PoseEstimate: Complete DensePose output
• InferenceSession: Neural network session state

Value Objects:

• BodyPart: Labeled body segment (torso, arms, legs, etc.)
• UVCoordinate: Surface mapping coordinate
• Keypoint: Body joint position
• Confidence: Prediction confidence score

Domain Services:

• ModalityTranslator: CSI → visual feature translation
• DensePoseHead: Body part segmentation and UV regression

3. Streaming Domain

Purpose: Real-time data delivery to clients

Aggregates:

• Session: Client connection with history
• StreamConfig: Client streaming preferences

Value Objects:

• WebSocketMessage: Typed message payload
• ConnectionState: Active/idle/disconnected

Domain Services:

• StreamManager: Manages client connections
• BroadcastService: Pushes updates to subscribers

4. Storage Domain

Purpose: Persistence and retrieval

Aggregates:

• Recording: Captured CSI session
• ModelArtifact: Neural network weights

Repositories:

• SessionRepository: Session CRUD operations
• RecordingRepository: Recording storage
• ModelRepository: Model management

5. Hardware Domain

Purpose: Physical device management

Aggregates:

• Device: WiFi router/receiver
• Antenna: Individual antenna configuration

Domain Services:

• DeviceManager: Device discovery and control
• CsiExtractor: Raw CSI extraction

Context Map

┌─────────────────────────────────────────────────────────────┐
│                      WiFi-DensePose                         │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  ┌──────────────┐     ┌──────────────┐     ┌─────────────┐ │
│  │   Hardware   │────▶│    Signal    │────▶│    Pose     │ │
│  │   Domain     │     │    Domain    │     │   Domain    │ │
│  └──────────────┘     └──────────────┘     └─────────────┘ │
│         │                    │                    │        │
│         │                    │                    │        │
│         ▼                    ▼                    ▼        │
│  ┌──────────────────────────────────────────────────────┐  │
│  │                   Storage Domain                      │  │
│  └──────────────────────────────────────────────────────┘  │
│         │                    │                    │        │
│         ▼                    ▼                    ▼        │
│  ┌──────────────────────────────────────────────────────┐  │
│  │                  Streaming Domain                     │  │
│  └──────────────────────────────────────────────────────┘  │
│                                                             │
└─────────────────────────────────────────────────────────────┘

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