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.

According to one embodiment of the present invention, a method by which a terminal for supporting device to device (D2D) communication relays a D2D signal comprises the steps of: transmitting, by the terminal, a D2D signal to be relayed to a neighboring terminal; and relaying a signal transmitted by the neighboring terminal, on the basis of the information on the D2D signal, wherein the information on the D2D signal includes information on D2D power, and the information on the D2D power can be determined by considering a reception power difference between D2D signals transmitted on mutually adjacent frequencies.

An origination device (e.g., a base station) receives relaying information from a signal forwarding device in a grant or a broadcast message. The relaying information can be information pertaining to channel conditions and/or quality (e.g., a Channel Quality Indicator) of a first communication link between the signal forwarding device and a destination device, and/or an encoding rate based on channel conditions associated with the first communication link. The origination device utilizes the relaying information to determine a first set of encoding parameters that correspond to channel conditions associated with the first communication link between the signal forwarding device and a destination device. The origination device encodes a first set of data according to the first set of encoding parameters and transmits the encoded first set of data to the signal forwarding device. The signal forwarding device transmits the encoded first set of data to the destination device.

A non-transitory computer-readable medium stores computer-readable program instructions executable by a processor of a relay device via which a terminal management device is communicable with a terminal device. The program instructions are configured to, when executed by the processor, cause the relay device to transmit, to the terminal management device, an inquiry for obtainment of an instruction directed to the relay device, when receiving from the terminal management device a reply including an instruction to perform a periodic process, perform the periodic process to, each time an interval elapses, repeatedly receive the terminal information from the terminal device and transmit the received terminal information to the terminal management device even without again receiving the instruction to perform the periodic process, and when receiving from the terminal management device a reply including an instruction to change the interval, change the interval.

Methods, systems, and devices for wireless communications are described. A relay device may detect an upstream radio link failure (RLF) associated with an upstream link of a wireless backhaul, where the wireless backhaul includes a first wireless link between the relay device and a first upstream backhaul device. The relay device may provide a first indication of the upstream radio link failure over a second wireless link between the relay device and a first downstream device. The relay device may establish a third wireless link with a second upstream backhaul device based on the detected upstream radio link failure. The relay device may provide multiple-access services to one or more downstream devices, where providing the multiple-access services is based on backhaul communications between the relay device and the second upstream backhaul device over the third wireless link.

A repeater device includes a first antenna array having a plurality of antenna configuration modes, where each mode defines a unique configuration of one or more sub-arrays of a plurality of different sub-arrays of the first antenna array. The repeater device further includes control circuitry configured to select one of the plurality of antenna configuration modes and based on the selected one of the plurality of antenna configuration modes, activate a first set of antenna elements of the first antenna array and deactivate a second set of antenna elements of the first antenna array. The first set of antenna elements corresponds to a first configuration of one or more sub-arrays of the first antenna array. A beam of RF signal is directed to a user equipment from the first configuration of the one or more sub-arrays of the first antenna array.

This application provides a data processing method and device, to implement bearer mapping of control plane signaling of user equipment on each interface. An IAB system includes a centralized unit CU, a distributed unit DU, a first IAB node, and a second IAB node. The method includes: generating, by the CU, a downlink F1AP message, where a message included in the downlink F1AP message is one or a combination of the following: an F1AP message of a terminal device, an F1AP message of the first IAB node, and an RRC message of the second IAB node; and sending, by the CU, the downlink F1AP message to the DU, and indicating that a message type of the message included in the downlink F1AP message is one of the following: an RRC message type, an F1AP message type, or an RRC message type and an F1AP message type.

A device includes a primary sector and secondary sectors communicatively coupled to the primary sector. The processor included in the primary sector is configured to down convert a Radio Frequency (RF) signals with a first frequency to an analog baseband (IQ) signal with a second frequency, and receive a second digital baseband signal that comprises a first digital baseband signal and a digital echo signal. The first digital baseband signal comprises a training sequence signal. Further, the processor estimates a plurality of filter taps of the FIR filter based on the digital echo signal and estimate the digital echo signal in the received second digital baseband signal based on the first digital baseband signal and the plurality of filter taps of the FIR filter. The estimated digital echo signal is removed from at least one current digital baseband signal based on the down conversion of the RF signals.

A relay device relaying, to a reception device, a signal stream transmitted by a transmission device through MIMO transmission, the relay device including a lattice base reduction processing unit transforming bases of the signal stream transmitted by the transmission device through MIMO transmission, to increase orthogonality of a lattice of the signal stream, a MIMO equalization unit detecting, by equalization, reception symbols in the signal stream with the bases transformed by the lattice base reduction processing unit, a symbol quantization unit performing quantization by mapping the reception symbols detected by the MIMO equalization unit, to a region on a complex plane delimited by quantization threshold values, and a transmission unit transmitting, to the reception device, at least a signal quantized by the symbol quantization unit.

Aspects of the disclosure relate to beam configuration for RF repeaters. An RF repeater is configured to measure received power of one or more signals in the repeater for each of a plurality of beam directions. Further, the repeater determines a beam forming configuration for a fronthaul link between the repeater and at least one base station based on the measured received power of each of plurality of beam directions. The repeater may also be configured to determine beam configurations for access links between the repeater and user equipment.