A data transmission method includes: A slave node transmits first data to a master node on a first time domain resource in a first time domain resource unit by using a first frequency domain resource. The slave node transmits second data in the target service to the master node on a third time domain resource in a second time domain resource unit using a second frequency domain resource. The first time domain resource unit is adjacent to the second time domain resource unit in a time domain. The first time domain resource unit sequentially includes, in the time domain, the first time domain resource, a first guard period, a second time domain resource, and a second guard period. The second time domain resource unit sequentially includes, in the time domain, the third time domain resource, a third guard period, a fourth time domain resource, and a fourth guard period.

A data transmission method includes: A slave node transmits first data to a master node on a first time domain resource in a first time domain resource unit by using a first frequency domain resource. The slave node transmits second data in the target service to the master node on a third time domain resource in a second time domain resource unit using a second frequency domain resource. The first time domain resource unit is adjacent to the second time domain resource unit in a time domain. The first time domain resource unit sequentially includes, in the time domain, the first time domain resource, a first guard period, a second time domain resource, and a second guard period. The second time domain resource unit sequentially includes, in the time domain, the third time domain resource, a third guard period, a fourth time domain resource, and a fourth guard period.

An Internet of Things (IoT) system is provided. The IoT system includes a plurality of terminal devices, a cloud device, and a human machine interface device. The cloud device is communicatively connected to the terminal devices. The human-machine interface device is communicatively connected to the cloud device via a plurality of first communication channels, and is used for determining a subscription sequence according to a piece of priority information of a plurality of control commands. The human-machine interface device schedules and dynamically subscribes to the first communication channels according to the subscription sequence, so as to transmit the control commands to the cloud device through different first communication channels according to the subscription sequence, so that the cloud device transmits the control commands to the corresponding terminal devices.

An Internet of Things (IoT) system is provided. The IoT system includes a plurality of terminal devices, a cloud device, and a human machine interface device. The cloud device is communicatively connected to the terminal devices. The human-machine interface device is communicatively connected to the cloud device via a plurality of first communication channels, and is used for determining a subscription sequence according to a piece of priority information of a plurality of control commands. The human-machine interface device schedules and dynamically subscribes to the first communication channels according to the subscription sequence, so as to transmit the control commands to the cloud device through different first communication channels according to the subscription sequence, so that the cloud device transmits the control commands to the corresponding terminal devices.

A system for detecting a defective battery using wireless communications. The system includes first sensors and a first master device. The first sensors are matched on a 1:1 basis with first battery modules to monitor the first battery modules. The first master device communicates with the first sensors. The respective first sensors each include a first monitoring circuit which collects a primary data on a 1:1-matched first battery module in a monitoring mode, and a first communicating circuit which outputs the primary data to the first master device in a communicating mode. The first monitoring circuit is turned off in the communicating mode. The first communicating circuit is turned off in the monitoring mode.

A method of displaying a communication state, the method comprising: obtaining, from a storage device, specification information and history information, the specification information being information indicating a specification of a communication performed in response to an occurrence of an event, the history information being information indicating a history of the communication performed in response to the occurrence of the event; identifying, from the specification information, first specification information corresponding to the communication performed at a relative time point separated from a start point set at an occurrence time point of the event; identifying, out of the history information, first history information corresponding to the communication performed at the relative time point; and outputting, to an output device, first correspondence information in which information indicating the communication corresponding to the first specification information and information on the communication corresponding to the first history information are associated with each other.

A method of displaying a communication state, the method comprising: obtaining, from a storage device, specification information and history information, the specification information being information indicating a specification of a communication performed in response to an occurrence of an event, the history information being information indicating a history of the communication performed in response to the occurrence of the event; identifying, from the specification information, first specification information corresponding to the communication performed at a relative time point separated from a start point set at an occurrence time point of the event; identifying, out of the history information, first history information corresponding to the communication performed at the relative time point; and outputting, to an output device, first correspondence information in which information indicating the communication corresponding to the first specification information and information on the communication corresponding to the first history information are associated with each other.

Techniques for wireless communications are described. A first device may receive first control signaling that may indicate a second device in a wireless communications system. The first device may then identify, based on the received first control signaling, a set of devices for tracking the second device in the wireless communications system. In some examples, the first device may then transmit second control signaling to the identified set of devices for tracking the second device in the wireless communications system. The first device may then receive, based on the transmitted second control signaling, coordination information from the set of devices. The received coordination information may be associated with the second device. The coordination information collected by the set of devices may be used to predict changes in an environment surrounding the second device. By predicting dynamic changes in the environment, disruptions in wireless communication may be prevented.

An apparatus for performing an over-the-air (OTA) update for a vehicle includes an estimated-time calculating device that calculates estimated time required for the OTA update of one or more controllers included in the vehicle, an update performing device that starts the OTA update based on the calculated estimated time, and a rollback performing device that performs an initial rollback on a failed OTA update once and to calculate a first value indicating whether a rollback is able to be performed on the failed OTA update in a case where the OTA update of at least one of the controllers fails when the OTA update is started.

An apparatus for performing an over-the-air (OTA) update for a vehicle includes an estimated-time calculating device that calculates estimated time required for the OTA update of one or more controllers included in the vehicle, an update performing device that starts the OTA update based on the calculated estimated time, and a rollback performing device that performs an initial rollback on a failed OTA update once and to calculate a first value indicating whether a rollback is able to be performed on the failed OTA update in a case where the OTA update of at least one of the controllers fails when the OTA update is started.