Intelligent vehicle systems and control logic for cellular link monitoring and failure detection

A non-transitory, computer-readable medium storing instructions executable by a vehicle controller of a motor vehicle, the motor vehicle including a wireless-enabled vehicle component attached to the motor vehicle, the instructions, when executed, causing the vehicle controller to perform operations comprising:

• receiving, from a cellular communications device of the wireless-enabled vehicle component, a signal indicating detection of a first network data packet transmitted to or from a first link port of the wireless-enabled vehicle component of the motor vehicle, wherein the first network data packet is either an uplink packet or a downlink packet, and wherein the first link port is either an uplink port or a downlink port;
• determining an observation period as a function of a transmission time at which the first network data packet was transmitted;
• monitoring a second link port, opposite the first link port, of the wireless-enabled vehicle component to determine whether or not a second network data packet, opposite the first network data packet, is not received within the observation period thereby indicating detection of a cellular link failure;
• and
• conducting a supplemental assessment of the second link port and/or a corrective action predetermined to re-establish a data link for the second link port in response to the detection of the cellular link failure.

A motor vehicle, comprising:

• a vehicle body;
• multiple drive wheels mounted to the vehicle body;
• a prime mover mounted to the vehicle body and operable to drive one or more of the drive wheels to thereby propel the motor vehicle;
• a wireless-enabled vehicle component mounted to the vehicle body;
• and
• an electronic vehicle controller programmed to:
• receive, from a cellular communications device of the wireless-enabled vehicle component, a signal indicating detection of a first network data packet transmitted to or from a first link port of the wireless-enabled vehicle component of the motor vehicle, wherein the first network data packet is either an uplink packet or a downlink packet, and the first link port is either an uplink port or a downlink port;
• determine an observation period as a function of a transmission time at which the first network data packet was transmitted;
• monitor a second link port, opposite the first link port, of the wireless-enabled vehicle component to determine whether or not a second network data packet, opposite the first network data packet, is not received within the observation period thereby indicating detection of a cellular link failure;
• and
• in response to the detection of the cellular link failure, conduct a supplemental assessment of the second link port and/or a corrective action predetermined to re-establish a data link for the second link port.