中国信通院-5G端到端切片SLA行业需求研究（英文）-2020.9-17页_4mb

Summary of Research Report on Industry SLA Requirements for 5G Network Slicing

Core Content

This report discusses the necessity of standardizing Service Level Agreement (SLA) requirements for 5G network slicing across different industries. It outlines the challenges in defining and managing SLA levels, proposes a structured SLA palette, and provides specific SLA levels for healthcare, manufacturing, and electric power industries based on their unique service demands and technical constraints.

Main Views and Key Information

1. Why 5G Slicing SLA Needs to Be Standardized?

• Industry players lack a common understanding of network slicing capabilities, making it difficult to design and purchase suitable slices.
• Operators should involve industry partners in defining SLA frameworks to ensure they meet the diverse and specific needs of different sectors.
• Current slice classification and SLA levels are not ideal for efficient slice management. A balance between technical complexity and service requirements is essential.
• Standardized SLA levels provide clear reference points for both operators and industry customers, enabling better service selection, cost-effective solutions, and systematic evaluation of service quality.

2. Understanding Connectivity SLA Requirements with Maslow's Hierarchy of Needs

• Deterministic services: Focus on bandwidth, latency, packet loss rate, jitter, and service availability. These are critical for applications requiring real-time performance.
• Security and trustworthiness: Require resource isolation (logical or physical) to ensure secure and reliable service delivery.
• Self-management: Encompasses the ability to monitor, configure, and manage slices. This includes visualized status, service modification, and self-operation via APIs.

3. SLA Palette for 5G Network Slicing

• A palette system is introduced to classify SLA requirements into levels for bandwidth (B1–B5), latency (T1–T5), security and trustworthiness (S1–S2), and self-management (M1–M3).
• Example combination: For a power grid slice, the SLA could be B3 (20–50 Mbit/s), T2 (20–50 ms), S1 (logical isolation), and M1 (visualized).
• The palette is used to categorize and evaluate SLA needs across different industries, facilitating better alignment of technical capabilities with service requirements.

Industry-Specific SLA Levels

4. Healthcare Slices and SLA Levels

• Diagnosis guidance slice: Requires B3 (20–50 Mbit/s), T2 (20–50 ms), S1 (logical isolation), and M1 (visualized).

  • Bandwidth is sufficient for HD video and image transmission.
  • Latency must be low to support interactive services like teleconsultations.
  • Logical isolation is sufficient for non-sensitive data.
  • Management is visualized, with telecom operators handling slice operations.

• Remote operation slice: Requires B2 (10–20 Mbit/s), T5 (<5 ms), S2 (physical isolation), and M1 (visualized).

  • High bandwidth is not required for control signals but low latency is critical.
  • Physical isolation is necessary to ensure data integrity and prevent interference.
  • Management is visualized, with operators maintaining control.

• Monitoring and nursing slice: Requires B1 (1–10 Mbit/s), T1 (50–100 ms), S1 (logical isolation), and M1 (visualized).

  • Low bandwidth and high tolerance for latency.
  • Logical isolation ensures data security.
  • Management is visualized, with telecom operators managing the slices.

5. Manufacturing Slices and SLA Levels

• High-uplink-bandwidth auxiliary non-production slice: Requires B3 (20–50 Mbit/s), T2 (20–50 ms), S1 (logical isolation), and M1 (visualized).

  • Suitable for HD video monitoring and data collection.
  • Logical isolation is sufficient for non-sensitive data.
  • Management is visualized, with telecom operators handling slice configuration.

• Massive-information-based auxiliary production slice: Requires B1 (1–10 Mbit/s), T2 (20–50 ms), S1 (logical isolation), and M1 (visualized).

  • Used for large-scale device data collection and monitoring.
  • Low latency is required for control data.
  • Logical isolation ensures data security.
  • Management is visualized, with telecom operators maintaining control.

• High-reliability precise-control core production slice: Requires B1 (1–10 Mbit/s), T4 (5–10 ms), S2 (physical isolation), and M2 (manageable).

  • Used for remote control and precise device operation.
  • Very low latency and high packet reliability are essential.
  • Physical isolation ensures data integrity.
  • Management is manageable, allowing some self-operation capabilities.

6. Electric Power Slices and SLA Levels

• Inspection slice based on HD videos: Requires B3 (20–50 Mbit/s), T2 (20–50 ms), S1 (logical isolation), and M3 (operable).

  • Bandwidth varies depending on the video type (e.g., AR, drone, video monitoring).
  • Latency is acceptable up to 50 ms for most inspection applications.
  • Logical isolation is sufficient for non-sensitive data.
  • Management is operable, with self-operation and user group management capabilities.

• Power grid control slice based on low latency: Requires B1 (1–10 Mbit/s), T3 (10–20 ms), S2 (physical isolation), and M3 (operable).

  • Low bandwidth for control data.
  • Latency must be less than 15 ms for critical applications like differential protection.
  • Physical isolation is necessary to ensure secure and stable control operations.
  • Management is operable, allowing self-operation and service management via APIs.

• Monitoring slice based on wireless collection: Requires B1 (1–10 Mbit/s), T1 (50–100 ms), S1 (logical isolation), and M3 (operable).

  • Used for data collection from power devices and monitoring environments.
  • Latency is not critical, but data security is important.
  • Logical isolation is required for data protection.
  • Management is operable, supporting self-defined user groups and access control.

Conclusion

• Standardizing SLA levels for 5G network slicing is essential to improve industry engagement and ensure efficient slice management.
• The proposed SLA palette provides a structured way to classify and match SLA requirements with specific service scenarios.
• The report emphasizes the importance of collaboration between operators and industry customers, as well as the need for clear, flexible, and cost-effective SLA frameworks.
• Each industry has distinct SLA needs, and tailoring SLA levels accordingly enhances service quality, security, and operational efficiency.