A relay device first receives a data packet from a network device through a first link, and sends the data packet to user equipment through a second link. A protocol stack of the relay device consists of a physical layer, a media access control layer, and a segmentation function or a resegmentation function of a radio link control layer; a protocol stack of the relay device consists of a physical layer, a media access control layer, a segmentation function or a resegmentation function of a radio link control layer, and an adaptation layer; or a protocol stack of the relay device consists of a physical layer and a hybrid automatic repeat request function of a media access control layer. The first link is a wireless communication link between the network device and the relay device, and the second link is a wireless direct communication link between the relay device and the user equipment.

A method according to a first aspect is a method performed by a relay node that establishes a radio backhaul link, with an adjacent relay node, relaying communication between a user equipment and a donor base station. The method includes measuring a parameter related to communication quality of a data packet by a BAP entity that transmits or receives the data packet via the radio backhaul link, and reporting a result of the measuring to the donor base station by an upper entity locating in an upper layer than the BAP entity.

A method according to a first aspect is a method performed by a relay node that establishes a radio backhaul link, with an adjacent relay node, relaying communication between a user equipment and a donor base station. The method includes measuring a parameter related to communication quality of a data packet by a BAP entity that transmits or receives the data packet via the radio backhaul link, and reporting a result of the measuring to the donor base station by an upper entity locating in an upper layer than the BAP entity.

A transmission method, a configuration method, and an apparatus for remote UE, and an electronic device, and pertains to the field of communications technologies. The transmission method for the remote terminal UE includes: obtaining configuration parameters for a PC5 interface for transmission of relay service from a network-side device or relay UE; and establishing, based on the obtained configuration parameters, a sidelink radio bearer SLRB and performing data transmission.

Embodiments of this application provide a device interaction method and a core network device. The method includes: receiving, by a first core network device, identifier information of at least one UE sent by a first device, where the at least one UE includes at least one of the following: a UE that has established UE-to-network relay connection with a first UE and a UE that is to establish UE-to-network relay connection with the first UE; and interacting, by the first core network device based on identifier information of a second UE, with a second core network device, where the second UE is any one of the at least one UE; where the first core network device is a core network device serving the first UE, and the second core network device is a core network device serving the second UE.

A communications network may include user equipment (UE) devices. When a first UE device becomes off-grid and has an emergency message, the first UE device may transmit device-to-device signals for receipt by a second UE device. The signals may include one or more preambles that precede the emergency message and that are used by the second UE device to perform synchronization with the first UE device. The second UE device may periodically activate a receiver during a series of windows to listen for the signals, may receive a preamble sequence during one of the windows, and may synchronize its timing to the first UE device for receipt of the emergency message based on the preamble sequence. This may allow the UE devices to be synchronized for transfer of the emergency message over long distances while consuming a minimal amount of power on the second UE device.

A communications network may include user equipment (UE) devices. When a first UE device becomes off-grid and has an emergency message, the first UE device may transmit device-to-device signals for receipt by a second UE device. The signals may include one or more preambles that precede the emergency message and that are used by the second UE device to perform synchronization with the first UE device. The second UE device may periodically activate a receiver during a series of windows to listen for the signals, may receive a preamble sequence during one of the windows, and may synchronize its timing to the first UE device for receipt of the emergency message based on the preamble sequence. This may allow the UE devices to be synchronized for transfer of the emergency message over long distances while consuming a minimal amount of power on the second UE device.

Provided is a method for performing relay forwarding on integrated access and backhaul (IAB) links. The method includes receiving, by a first IAB node, a data packet; and transmitting, by the first IAB node, the data packet to an IAB donor. Further provided are an information acquisition method, an IAB node, an IAB donor node and a storage medium.

Provided is a method for performing relay forwarding on integrated access and backhaul (IAB) links. The method includes receiving, by a first IAB node, a data packet; and transmitting, by the first IAB node, the data packet to an IAB donor. Further provided are an information acquisition method, an IAB node, an IAB donor node and a storage medium.

Embodiments of the present disclosure relate to methods and apparatuses for wireless communication. According to some embodiments of the disclosure, a method may include: transmitting, at a first user equipment (UE), a radio resource control (RRC) reconfiguration sidelink via relay message on a sidelink between the first UE and a second UE; and starting a timer associated with the RRC reconfiguration sidelink via relay message. The second UE may act as a relay node and may transfer the received message to a destination UE or base station. The destination UE or base station may response to the first UE before a timer expires.