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Type:
Bug
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Resolution: Fixed
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Priority:
Urgent
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SimpleLink Lowpower SDK F3 BLE5 Stack
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BLE_LOKI-3820
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BLE_LOKI_9_14_00
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Description: When operating with certain smartphone as peer, we occasionally experience anchor misalignment between CS events, particularly during connection parameter updates. This causes subevents to lose synchronization, resulting in procedure abortion and returning 0xFFFFFFFF (invalid) measurements. The current implementation does not attempt to recover from this specific type of anchor misalignment, leading to complete procedure failure and invalid results being reported to the host.
Reproduction Steps:
Establish BLE connection with certain smartphone
Initialize Channel Sounding with multi-event procedures
Put the phone very close to the Car Node
Observe the anchor misalignment in sniffer logs, followed by procedure failure