SWRA734 December   2021 CC1312PSIP , CC1312R , CC1312R7 , CC1314R10 , CC1352P , CC1352P7 , CC1352R , CC1354P10 , CC1354R10 , CC2652P , CC2652P7 , CC2652R , CC2652RB , CC2652RSIP

 

  1.   Trademarks
  2. 1Introduction
  3. 2Benefits of Having Multiple Gateway Support
    1. 2.1 Node Balancing
    2. 2.2 Robustness
    3. 2.3 Extended Coverage and Network Redundancy
  4. 3Current SDK Examples and Coprocessor Configuration
  5. 4Central Gateway
  6. 5Enabling Multiple Gateway Support
    1. 5.1 PAN Coordinator Switching Due to Sync Loss
    2. 5.2 PAN Coordinator Switching Due to a Command Coming From the Central Gateway
  7. 6Basic Implementation of PAN Coordinator Switching
    1. 6.1 PAN Coordinator Switching Due to Sync Loss
    2. 6.2 PAN Coordinator Switching Due to a Command Coming From the Central Gateway
  8. 7Summary
  9. 8References

2.2 Robustness

Robustness refers to the ability of a network to withstand failures and perturbations. This feature is particularly relevant for a TI 15.4 network because it relies on a star topology in which one node (the PAN coordinator) is a single point of failure for the network.

Suppose for example that a TI 15.4 network is deployed with some sensor devices and after some time the PAN coordinator fails. If the PAN coordinator does not recover, all the sensors in the network go into what is known as an orphan state, and try (in vain) to rejoin the PAN coordinator until their power source fails. By having a network in which there are multiple gateways acting as PAN coordinators, sensor devices can at any point in time switch to a different PAN coordinator making the network more robust and resilient.