A method for transmitting data from a management entity in a communication system further comprising at least one data concentrator device to which smart electricity meters are attached via a first powerline communication network, each data concentrator device being connected to the management entity via a second communication network. Said smart electricity meter receives, coming from the management entity, via the first powerline communication network, a message indicating that a transfer of data is pending with the management entity. Said smart electricity meter comprising a wireless communication interface adapted to communicate via a third wireless local communication network with a residential gateway connected to the management entity via a fourth communication network, said smart electricity meter obtains said data from the management entity via the third wireless local communication network.

A method for transmitting data from a management entity in a communication system further comprising at least one data concentrator device to which smart electricity meters are attached via a first powerline communication network, each data concentrator device being connected to the management entity via a second communication network. Said smart electricity meter receives, coming from the management entity, via the first powerline communication network, a message indicating that a transfer of data is pending with the management entity. Said smart electricity meter comprising a wireless communication interface adapted to communicate via a third wireless local communication network with a residential gateway connected to the management entity via a fourth communication network, said smart electricity meter obtains said data from the management entity via the third wireless local communication network.

A network communication module (NCM), comprising: (a) a housing configured to connect to an outlet containing power wiring; (b) a PLC interface in said housing and electrically connected to said power wiring; (c) a legacy control interface configured for electrical connection with one or more downstream devices; (d) a microprocessor and memory configured for causing said microprocessor to perform at least the following steps: communicate over the powerline via PLC to at least receive control signals or transmit data related to said one or more downstream devices, and communicate with said one or more downstream devices via said legacy control interface to transmit control signals or receive said data from one or more said downstream devices.

A network communication module (NCM), comprising: (a) a housing configured to connect to an outlet containing power wiring; (b) a PLC interface in said housing and electrically connected to said power wiring; (c) a legacy control interface configured for electrical connection with one or more downstream devices; (d) a microprocessor and memory configured for causing said microprocessor to perform at least the following steps: communicate over the powerline via PLC to at least receive control signals or transmit data related to said one or more downstream devices, and communicate with said one or more downstream devices via said legacy control interface to transmit control signals or receive said data from one or more said downstream devices.

A communication system for transport means is provided, by which wireless communication is performed between the outside and the wireless communication environment in the transport means. Optical wireless communication is performed between a terminal device 2 and a light source device 3. A body ECU 4 connected to the light source device 3 by wired connection is further connected, by the wired connection, to a DCM 7 performing wireless communication with the outside. The light source device 3 and the body ECU 4 communicate with each other by power line communication. Accordingly, the light source device 3 sends and receives information between the outside via the body ECU 4 and the DCM 7. Thus, a vehicle communication system 1 that realizes wireless communication between the outside and the in-vehicle wireless communication environment (in-vehicle wireless communication environment configured including the terminal device 2 and the light source device 3) is built.

A communication system for transport means is provided, by which wireless communication is performed between the outside and the wireless communication environment in the transport means. Optical wireless communication is performed between a terminal device 2 and a light source device 3. A body ECU 4 connected to the light source device 3 by wired connection is further connected, by the wired connection, to a DCM 7 performing wireless communication with the outside. The light source device 3 and the body ECU 4 communicate with each other by power line communication. Accordingly, the light source device 3 sends and receives information between the outside via the body ECU 4 and the DCM 7. Thus, a vehicle communication system 1 that realizes wireless communication between the outside and the in-vehicle wireless communication environment (in-vehicle wireless communication environment configured including the terminal device 2 and the light source device 3) is built.

A system and method is provided for data over power in an aircraft that includes a direct current power source for providing power over power lines to devices onboard the aircraft and a data injector coupled to the power lines for digitally modulating radio frequency data onto twisted pair data over power lines to provide data and power to the devices. A controller is coupled to the direct current power source and the data injector for providing the data to digitally modulate the radio frequency onto the twisted pair data over power lines such that power for the devices onboard the aircraft and data for control of the device onboard the aircraft are provided to the devices onboard the aircraft over the twisted pair data over power lines.

A system and method is provided for data over power in an aircraft that includes a direct current power source for providing power over power lines to devices onboard the aircraft and a data injector coupled to the power lines for digitally modulating radio frequency data onto twisted pair data over power lines to provide data and power to the devices. A controller is coupled to the direct current power source and the data injector for providing the data to digitally modulate the radio frequency onto the twisted pair data over power lines such that power for the devices onboard the aircraft and data for control of the device onboard the aircraft are provided to the devices onboard the aircraft over the twisted pair data over power lines.

The present disclosure provides a data transmission method and apparatus. The method includes: obtaining to-be-transmitted data; putting the to-be-transmitted data into a to-be-transmitted data field with a fourth predetermined number of Bytes in a first predetermined frame format for encapsulation, to obtain a to-be-transmitted data frame, the first predetermined frame format sequentially including a first permeable field, a frame synchronization signal field, an address field, the to-be-transmitted data field, a check field, a first postamble field, and a first predetermined gap field; encoding and modulating the to-be-transmitted data frame in accordance with BPSK, and then transmitting the to-be-transmitted data frame; and demodulating and decoding in accordance with the BPSK to obtain an ACK signal.

A dual cavity, low power, outdoor combination line amplifier package for cable telecommunication systems is disclosed. It comprises: a dual-cavity main frame, cast in one piece and sectioned into an upper cavity and a lower cavity; a hardline entry cover, having a hardline receptacle PCB with a power supply fixed thereon, electrically and environmentally sealing on one side of the upper cavity; a tap plate cover, having a tap plate PCB fixed thereon and mounted with a plurality of taps, electrically and environmentally sealing on the other side of the upper cavity with the taps facing externally; a gain module heatsink cover, having a gain module PCB and a passive PCB fixed thereon, electrically and environmentally sealing on one side of the lower cavity; and a smart app accessories cover, having a smart access cover PCB fixed thereon, electrically and environmentally sealing on the other side of the lower cavity.