SWRA714B July   2021  – June 2025 CC1312PSIP , CC1312R , CC1312R7 , CC1314R10 , CC1352P , CC1352P7 , CC1352R

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Acronyms
  5. 2 Overview
  6. 3 Reference Examples
  7. 4 RF Protocols – Wi-SUN® PHYs
  8. 5 Software Block Diagram
  9. 6 Network Topology and Features
  10. 7 Security
    1. 7.1 Certificate Management
    2. 7.2 Key Exchange Process
  11. 8 Performance and Test Data
    1. 8.1 Latency Test
    2. 8.2 Join-time Test
    3. 8.3 OAD Test
  12. 9 Out-of-box Experience
  13. 10Training
  14. 11Tools
    1. 11.1 Code Composer Studio IDE
    2. 11.2 SysConfig
    3. 11.3 Packet Sniffer
    4. 11.4 TI Wi-SUN FAN Spinel
    5. 11.5 TI wfantund – User-Space Network Interface Driver
  15. 12Known Limitations

6 Network Topology and Features

TI's Wi-SUN® FAN 1.0 supports the following device types and designs:

  • Border router
    • Based on TI CC13x2x7 series (704KB) and CC13x4x10 series (1MB) memory devices in Network Processor (NWP) mode requiring a Host Processor for providing backhaul connectivity
    • Supports UART communication through a TI defined NWP interface (based on SPINEL interface layer)
  • Router node in NWP mode
    • Supported in both TI CC13x2xx series (352 KB), CC13x2x7 series (704 KB) and CC13x4x10 series (1MB) devices
    • Supports UART communication through a TI defined NWP interface (based on SPINEL interface layer)
  • Embedded router node
    • Based on TI CC13x2x7 series (704KB) and CC13x4x10 series (1MB) memory devices
    • Provides an example implementation based on CoAP Application
    • Over-the-Air Download (OAD) functionality with off-chip memory for CC13x2x7 series (704KB) and on-chip memory for CC13x4x10 series (1MB)

A network can consist of a variety of the aforementioned devices and roles in a Wi-SUN® FAN. One possible network architecture that displays all of the roles is visualized in Figure 1.

Available Network Architectures With Border Router and Routers Using NWP Implementation and Embedded Routers Figure 1 Available Network Architectures With Border Router and Routers Using NWP Implementation and Embedded Routers

The network associated with a border router is called a PAN. Multiple PANs can be connected through a WAN Backhaul to extend the network coverage. This backhaul is not part of the Wi-SUN® FAN specification.

Wi-SUN Network Topology Consisting of Two PANs Figure 2 Wi-SUN® Network Topology Consisting of Two PANs
Wi-SUN® FAN 1.0 standard supports up to 24 hops. The network size is limited by border router RAM, in addition to application use-case details. TI recommends using up to approximately 100 nodes per border router for devices with 144KB RAM. Multiple border routers can be used to scale the network as shown in this figure. TI devices with larger memory can support larger networks.