A vehicle-mounted relay device includes a hardware unit implementing functions of first to third layer of OSI model, and a software unit implementing functions of fourth and upper layers of OSI model. The hardware unit includes a first abnormality recording section in which an abnormal frame detected during data relay is recorded, and a first abnormality recording processing section storing, in response to detection of the abnormal frame, the abnormal frame in the first abnormality recording section. The software unit includes a second vehicle information recording section in which vehicle information sequentially transmitted from an end ECU is stored, and a first diagnostic recording processing section, which reads out the abnormal frame from the first abnormality recording section and reads out the vehicle information from the second vehicle information recording section, and stores the readout abnormal frame and vehicle information in a diagnostic information recording section as diagnostic information.

A signal generation device includes m transceivers, a usage amount determination unit that executes a usage amount determination process that determines the usage amount of the FIFO of each transceiver, and a phase adjustment unit that adjusts the phase of the read clock signal for the FIFO. The signal generation device performs the second usage amount determination process on the condition that the count that the usage amount of the FIFO of each transceiver is determined to be less than the usage amount threshold by the first usage amount determination process consecutively reaches the first determination count, and terminates the adjustment of the phase of the read clock signal on the condition that the count that the usage amount of the FIFO of each transceiver is determined by the second usage amount determination process to be greater than the usage amount threshold consecutively reaches the second determination count.

Provided are a computer program product, system, and method for providing a mediation layer between a virtual network function manager and virtual network functions supporting different protocols. A first command is received in a first communication protocol to perform an operation at a target virtual network function component managing a virtual resource. A determination is made of a second command in a second communication protocol mapping to the first command to perform a function of the first command at the target virtual network function component. The second command is communicated, using the second communication protocol, to the target virtual network function component to perform an operation with respect to the virtual resource managed by the target virtual network function component.

A work machine includes a body, a work implement attached to the body, and a controller that executes a transmission process of transmitting data to an external apparatus installed outside the body. The controller measures a speed of communication with the external apparatus, places a functional restriction on the transmission process when the speed of communication is lower than a predetermined required speed, reinforces the functional restriction on the transmission process as the speed of communication lowers, and reinforces the functional restriction on the transmission process when a state of the work machine is an operation state, as compared to a case where the state of the work machine is not the operation state.

A communication ECU corresponding to a communication control device controls communication between a vehicle and an outside thereof. The communication ECU includes a requested bandwidth calculation unit corresponding to a calculation unit that calculates a requested bandwidth, which is a communication bandwidth requested for execution of a specific process in the vehicle, based on at least one of a computing power and a sensing capability of the vehicle. The communication ECU includes a bandwidth request unit corresponding to a request unit that requests a communication management device to secure the requested bandwidth; and a cooperation condition notification unit corresponding to a defining unit that defines a utilization bandwidth, which is a communication bandwidth used by the vehicle, based on a response to a request to secure the requested bandwidth.

A center server corresponding to a communication management device manages communication between a vehicle and an outside thereof. The center server includes: a request acquisition unit corresponding to an acquisition unit that acquires a requested bandwidth, which is a communication bandwidth requested for execution of a specific process in the vehicle, a radio resource arbitration unit corresponding to an identification unit that identifies a frequency band to which the requested bandwidth is allocated, according to a communication capacity of the vehicle, and a request response unit corresponding to a transmission unit that transmits, to the vehicle, an allocation result of allocating the requested bandwidth to the identified frequency band.

A center server corresponding to a communication management device manages communication between a vehicle and an outside thereof. The center server includes: a request acquisition unit corresponding to an acquisition unit that acquires a requested bandwidth, which is a communication bandwidth requested for execution of a specific process in the vehicle, a radio resource arbitration unit corresponding to an identification unit that identifies a frequency band to which the requested bandwidth is allocated, according to a communication capacity of the vehicle, and a request response unit corresponding to a transmission unit that transmits, to the vehicle, an allocation result of allocating the requested bandwidth to the identified frequency band.