Description:
Hello, We are developing a DECT NR+ communication setup using multiple nRF9161 DK boards arranged in a Sink–Relay–Leaf topology.
Each board operates as a DECT node (sink, relay, or leaf) and participates in a bidirectional communication chain. In this setup:
- Relay nodes must associate both upstream (with the previous node) and downstream (with the next node).
- All boards begin by starting a beacon, scanning for neighboring beacons, and then initiating association with detected neighboring nodes.
Observed Problem:
When the relay nodes start beaconing followed by beacon scanning and then association, the association step fails with scheduling conflict errors.
Specifically:
- After all nodes start their beacons and begin scanning, each node detects the neighboring beacons correctly.
- However, when the association procedure starts between nodes, associations fails with an error related to “scheduling conflict”.
- This happens most often on relay nodes, which attempt to associate with two neighbors (both uplink and downlink).
Codes:
NRF_MODEM_DECT_PHY_ERR_OP_SCHEDULING_CONFLICT = 0x1004
Regards,
