Disclosed in implementations of the present disclosure are a method for relay transmission and a relay node. The method comprises: a relay layer of a first node receives target data sent by a second node, wherein the second node is an anchor node or a relay node, the first node is wirelessly connected to the second node, the anchor node is wiredly connected to a core network, and a destination node of the target data is a third node; and the relay layer of the first node processes the received target data.

The present disclosure includes systems and techniques relating to broadcast and multicast in a wireless communication system. In some implementations, an announcement frame indicating a broadcast or multicast service period to multiple second wireless devices is transmitted by a first wireless device. The announcement frame indicates (i) an end time of the broadcast or multicast service period and (ii) an order of a sequence of frames to be directed to the multiple second wireless devices. Each of the sequence of frames is transmitted at the first wireless device using a directional antenna pattern to a respective one of the multiple second wireless devices, according to the order of the sequence of frames indicated in the announcement frame. An acknowledgement frame in response to the each of the sequence of frames is received at the first wireless device from the respective one of the multiple second wireless devices.

The present disclosure includes systems and techniques relating to broadcast and multicast in a wireless communication system. In some implementations, an announcement frame indicating a broadcast or multicast service period to multiple second wireless devices is transmitted by a first wireless device. The announcement frame indicates (i) an end time of the broadcast or multicast service period and (ii) an order of a sequence of frames to be directed to the multiple second wireless devices. Each of the sequence of frames is transmitted at the first wireless device using a directional antenna pattern to a respective one of the multiple second wireless devices, according to the order of the sequence of frames indicated in the announcement frame. An acknowledgement frame in response to the each of the sequence of frames is received at the first wireless device from the respective one of the multiple second wireless devices.

A system for providing communication in a distributed land mobile radio (LMR) system architecture. In some embodiments, the system includes a first controller associated with an LMR site. The first controller may be configured to control communication, via a communication channel, of a plurality of LMRs. In some embodiments, the system further includes a first repeater of a plurality of repeaters associated with the LMR site. The first repeater may include at least an active mode. The first repeater may be in the active mode to initiate a simulcast controller operation using the communication channel of the plurality of repeaters.

A system for providing communication in a distributed land mobile radio (LMR) system architecture. In some embodiments, the system includes a first controller associated with an LMR site. The first controller may be configured to control communication, via a communication channel, of a plurality of LMRs. In some embodiments, the system further includes a first repeater of a plurality of repeaters associated with the LMR site. The first repeater may include at least an active mode. The first repeater may be in the active mode to initiate a simulcast controller operation using the communication channel of the plurality of repeaters.

A relay device includes a first communication unit that communicates with an information management apparatus connected to the Internet via a firewall, a second communication unit that performs near field communication with a terminal apparatus, a storage unit that acquires from the information management apparatus, using the first communication unit, information for identifying the terminal apparatus and mode instruction information that is instruction information indicating that an operation is to be performed in a second mode for acquiring data having a larger data amount than in a first mode, and stores the acquired information, and a control unit that in a case where the terminal apparatus connected using the second communication unit is a terminal apparatus that needs to operate in the second mode, performs control so as to transmit mode instruction information for instructing the operation in the second mode, to the terminal apparatus, and transmit data acquired from the terminal apparatus by using the second communication unit, to the information management apparatus by using the first communication unit.

A system and method for providing communication in a distributed LMR system architecture is provided herein, wherein the system includes a plurality of LMR subsystems interconnected by a data network. In some embodiments, a subsystem may include a distributed simulcast architecture comprising a plurality of LMR sites, each site having a subsystem controller and a plurality of repeaters. In one embodiment, one subsystem controller operates in an active mode and the remaining subsystem controllers operate in standby to provide redundancy. The repeaters include integrated voter comparator and simulcast controller functionality and circuitry. In some embodiments, the repeaters are operable in an active or standby mode, wherein repeaters in the active mode perform voter comparator and simulcast controller functionality. The distributed simulcast architecture provides simulcast controller and voter comparator redundancy, network failure redundancy, and site redundancy.

A system and method for providing communication in a distributed LMR system architecture is provided herein, wherein the system includes a plurality of LMR subsystems interconnected by a data network. In some embodiments, a subsystem may include a distributed simulcast architecture comprising a plurality of LMR sites, each site having a subsystem controller and a plurality of repeaters. In one embodiment, one subsystem controller operates in an active mode and the remaining subsystem controllers operate in standby to provide redundancy. The repeaters include integrated voter comparator and simulcast controller functionality and circuitry. In some embodiments, the repeaters are operable in an active or standby mode, wherein repeaters in the active mode perform voter comparator and simulcast controller functionality. The distributed simulcast architecture provides simulcast controller and voter comparator redundancy, network failure redundancy, and site redundancy.

The present specification provides a method for transmitting a grant related to sidelink transmission of a remote UE, through a UE-to-network relay in a wireless communication system. A method performed by a relay UE comprises the steps of: receiving a first control message related to a grant from a serving base station, wherein the first control message includes an identifier for identifying a remote UE, first control information related to a time point of monitoring the grant, and second control information related to a time point at which the relay UE relays the grant to the remote UE; receiving the grant from the serving base station on the basis of the first control information; and transmitting the grant to the remote UE on the basis of the identifier and the second control information.

The present specification provides a method for transmitting a grant related to sidelink transmission of a remote UE, through a UE-to-network relay in a wireless communication system. A method performed by a relay UE comprises the steps of: receiving a first control message related to a grant from a serving base station, wherein the first control message includes an identifier for identifying a remote UE, first control information related to a time point of monitoring the grant, and second control information related to a time point at which the relay UE relays the grant to the remote UE; receiving the grant from the serving base station on the basis of the first control information; and transmitting the grant to the remote UE on the basis of the identifier and the second control information.