When transmitting signals from a plurality of base stations (broadcasting stations), the base stations include at least a first base station having a first antenna with a first polarization and a second base station having a second antenna with a second polarization that is different from the first polarization. Then, when the first base station transmits a signal from the first antenna having the first polarization, the second base station transmits the same signal as the first antenna of the first base station from a second antenna having the second polarization, at the same time.

An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus protecting an implanted coil and/or implant electronics against induction of over-voltage or performing an electric switching function for other various purposes. The magnetic switch may further include, for example, a first switching contact and a second switching contact. A magnetically soft body that includes an electrically conductive surface is shiftable between a first position where the body is in simultaneous contact with the first and second switching contacts, and a second position where the body is out of contact with at least one of the first and second switching contacts. The body and the implantable magnet are positioned such that the body is shifted to one of the first position and the second position as a function of the external magnetic field resulting in a magnetic force between the magnet and the magnetically soft body.

Provided are a data transmission method, the method comprises transmitting data from a data transmission apparatus to a data reception apparatus, selecting time difference retransmission target data from the data according to a preset rule by using the data transmission apparatus, determining a retransmission time interval according to characteristics of the time difference retransmission target data by using the data transmission apparatus, determining whether time difference retransmission is possible based on the state of a network when the retransmission time interval arrives by using the data transmission apparatus and retransmitting the time difference retransmission target data to the data reception apparatus when determining that the time difference retransmission is possible by using the data transmission apparatus.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to the base station, a beam recovery request including an indication of a multicast beam, where the beam recovery request is transmitted based at least in part on a unicast uplink grant, and where the unicast uplink grant comprises a set of uplink resources for a multicast beam recovery procedure based at least in part on a failure of the multicast beam associated with multicast communications between the UE and the base station. The UE may receive, from the base station in response to the beam recovery request, a response message including an indication of a second uplink grant, an indication of a second beam for communications between the UE and the base station, or both. The UE may transmit a first uplink transmission via the second uplink grant, the second beam, or both.

The present disclosure provides a method for a machine type communication (MTC) device to receive a hybrid automatic repeat request (HARQ) acknowledgement (ACK)/non-acknowledgement (NACK) signal. The method can include the steps of: the MTC device transmitting a physical uplink control channel (PUCCH) including uplink data; the MTC device determining a radio network temporary identifier (RNTI) for itself from among a plurality of new RNTIs; monitoring the reception of a downlink control channel in a search space; and receiving a HARQ ACK/NACK signal for the transmission of the uplink data by decoding a downlink control channel scrambled with the determined RNTI.

A system and method for broadcast response generally employing RDS, DARC, or similar technology is provided, including a method for responding to a broadcast comprising extracting an event identifier from a broadcast signal; detecting a response by a user to the broadcast signal; polling a communications device to determine a user identifier; and communicating the event identifier and the user identifier when the user response is detected.

Techniques to manage media flows for broadcast with public cloud networks. A request for a media flow is received. A location of the media flow is identified based on a registration database configured to maintain locations of media flows across a media production facility and a public cloud network facility. The media flow is accessed, and at least one of the receiving entity or the requesting entity is configured to generate media based on the media flow.

[Object] To improve the reliability by using an acknowledgement response while using radio resources efficiently in multicast transmission over wireless transmission. [Solution] A plurality of wireless communication devices included in a multicast group, when receiving a data frame, transmit simultaneously an acknowledgement response of multicast using spatial multiplexing in response to an acknowledgement request from a transmission source. On the other hand, a wireless communication device of the transmission source decomposes the acknowledgement responses simultaneously received into the original individual acknowledgement responses and restores them using signal processing based on information on a channel with each wireless communication device of a transmission destination.

The present disclosure provides an energy transmission method, an energy router and an operation control device thereof, and a storage medium, and relates to the field of energy network technology. The energy router of the present disclosure includes a plurality of ports configured to perform at least one of receiving or sending energy and PLC data, energy transmission switches, each of the energy transmission switches is configured to control open and closed states of one port of, and a routing processor configured to determine an energy transmission path according to the PLC data and stored routing information, determine a corresponding port associated with the energy transmission path, and turn on an energy transmission switch of the corresponding port, for the energy outputting from the corresponding port.

A method of retransmitting a multicast message through a unicast channel in a virtual distributed storage system comprising a cluster of nodes that includes a master node and a set of agent nodes is provided. Each node maintains a copy of a directory of the virtual distributed storage system. The master node multicasts messages to the agent node through a multicast channel to update the directory. The method determines that a particular message to update the directory exceeds a maximum size limit for transmit to the agent nodes through the multicast channel. The method multicasts a retransmission trigger message from the master node to each agent node. The method receives a retransmission request message at the master node from each of the agent nodes through a unicast channel. The method sends the particular message to update the directory from the master node to each agent node through the unicast channel.