This counter tracks how many packets had to be retransmitted to a specific station before being successfully delivered. An admin can use a rising retry count, even without outright failures, as an early sign of marginal link quality to a station that may soon experience worse problems if conditions continue to degrade. If ciscoUrwbStaTxRetry climbs steadily for a trackside-to-mobile link as a train approaches the edge of coverage, the admin would recognize this as the expected signal weakening before a handoff to the next access point.