The present invention, a communication device configured to receive supply of electrical power from a battery unit and transmit and receive a data signal, the device includes a first wireless communication means configured to intermittently receive a data signal, a second wireless communication means configured to transmit a data signal; and a communication control means configured to temporarily hold the data signal received by the first wireless communication means, power off the second wireless communication means until a predetermined condition is satisfied, power on the second wireless communication means after a predetermined condition is satisfied, and transmit the held data signal.

An example system includes a server communicatively connected to a cellular base transceiver station having an RF coverage area and configured for RF communication with a first entity that is a transceiver device in the RF coverage area, wherein the server comprises a first publish-subscribe broker that is part of a publish-subscribe broker network that comprises one or more publish-subscribe brokers, wherein a second entity connected to any of the one or more publish-subscribe brokers in the publish-subscribe broker network accepts communications from the transceiver device if the second entity subscribes to data packets published by the transceiver device, and wherein the data packets published by the transceiver device are routed through the publish-subscribe broker to which the second entity is connected.

An example system includes a server communicatively connected to a cellular base transceiver station having an RF coverage area and configured for RF communication with a first entity that is a transceiver device in the RF coverage area, wherein the server comprises a first publish-subscribe broker that is part of a publish-subscribe broker network that comprises one or more publish-subscribe brokers, wherein a second entity connected to any of the one or more publish-subscribe brokers in the publish-subscribe broker network accepts communications from the transceiver device if the second entity subscribes to data packets published by the transceiver device, and wherein the data packets published by the transceiver device are routed through the publish-subscribe broker to which the second entity is connected.

A device may send a first message to a user device requesting information identifying a radio access technology (RAT) or a band supported by and enabled on the user device. The device may receive an indication of the RAT or band supported by and enabled on the user device and send, to the user device, a second message instructing the user device to modify the RAT or band enabled on the user device. The second message may include an indication of updated RAT or band information. The device may receive from the user device, a confirmation that the RAT or band enabled on the user device has been modified.

Provided is an electric apparatus, which has excellent convenience and operates by switching an operation mode according to the type of a communication device of a connection destination. The electric apparatus includes: a superimposition signal transmission portion which transmits, to a communication device, a superimposition signal obtained by superimposing a data signal on an operation signal; an operation mode switching portion which switches between a normal operation mode in which transmission of the superimposition signal is performed and a low current consumption mode in which transmission of the superimposition signal is not performed; and a current detection portion which detects a current value supplied from the communication device, wherein the operation mode switching portion switches the low current consumption mode to the normal operation mode when the current detection portion detects a current equal to or greater than a predetermined threshold value in the low current consumption mode.

Provided is an electric apparatus, which has excellent convenience and operates by switching an operation mode according to the type of a communication device of a connection destination. The electric apparatus includes: a superimposition signal transmission portion which transmits, to a communication device, a superimposition signal obtained by superimposing a data signal on an operation signal; an operation mode switching portion which switches between a normal operation mode in which transmission of the superimposition signal is performed and a low current consumption mode in which transmission of the superimposition signal is not performed; and a current detection portion which detects a current value supplied from the communication device, wherein the operation mode switching portion switches the low current consumption mode to the normal operation mode when the current detection portion detects a current equal to or greater than a predetermined threshold value in the low current consumption mode.

A wireless device receives an uplink grant indicating radio resources in m consecutive subframes 0 to m−1, where m is two or more. For each subframe of the m consecutive subframes store, a respective packet is stored. In response to a determination that the wireless device cannot access a channel for a transmission in subframe k, k∈{0, . . . , m−2}: the respective packet stored for subframe k is not transmitted; and a listen-before-talk procedure indicating that the channel is clear in subframe k+1 is performed. The respective packet stored for each subframe of subframes k+1 to m−1 are transmitted via subframes k+1 to m−1.

The present invention relates generally to a system and method of networking and interconnecting a large number of various types of sensors to a remote location in an efficient manner Specifically, the invention utilizes a flexible, configurable, scalable and power-efficient sensor interface relay architecture to gather sensor data from various locations and then relay it to a remote location via the internet.

The present invention relates generally to a system and method of networking and interconnecting a large number of various types of sensors to a remote location in an efficient manner Specifically, the invention utilizes a flexible, configurable, scalable and power-efficient sensor interface relay architecture to gather sensor data from various locations and then relay it to a remote location via the internet.

A communication terminal device 100 comprises a first power generator 101, a second power generator 102 whose power generation principle is different from the first power generator, a sensor 103 for sensing information, a first communication unit 104 for sending the information using electric power supplied from the first power generator, a second communication unit 105 for sending the information using electric power supplied from the second power generator, the second communication unit uses a communication scheme different from the first communication unit.