The present disclosure relates to a 5G or pre-5G communication system which will be provided in order to support a higher data transmission rate than in 4G communication systems such as LTE. A method at a relay node according to one example of the present invention is a hybrid automatic repeat request method at the relay node in a relay wireless communication system using a compress-and-forward (CF) scheme, and may comprise the steps of: when receiving data from a previous node, performing mesh quantization so as to have redundant information at the time of quantization for transmitting, to a next node, the data received from the previous node; transmitting to the next node by channel-coding only an amount transmittable to a channel set for transmitting to the next node from upper information among the quantized information; and when receiving negative acknowledgement (NACK) from the next node, retransmitting to the next node by channel-coding only an amount transmittable to the set channel among the other information which is not transmitted among the quantized information.

In a communication system that includes an access point, a repeater #1, and a repeater #2 and wirelessly communicates with a terminal, the access point wirelessly communicates with the repeater #1 on at least a first channel included in a first frequency band and wirelessly communicates with the repeater #2 on at least a second channel included in a second frequency band different than the first frequency band, the repeater #1 wirelessly communicates with the terminal on at least a third channel included in the second frequency band, and the repeater #2 wirelessly communicates with the terminal on at least a fourth channel included in the first frequency band.

A relay for a telecommunications system comprises a decoder which responds to received blocks corresponding to successive code words x.sub.S,t transmitted simultaneously by sources during T time slots. At each slot t, t=1, . . . , T, a code word x.sub.S,t comprises B blocks x.sub.S,t.sup.(1), x.sub.S,t.sup.(2), . . . , x.sub.S,t.sup.(B). The first can be decoded independently of the other blocks, to estimate for each source code words x.sub.S,t. It also comprises a detector which detects messages that have been decoded without error and takes a decision and an encoder and transmitter which encodes a signal and transmits it to the destination, which signal is representative only of messages that have been decoded without error. When estimating, the decoder takes account of a signal transmitted by another relay representative of messages from the sources that were decoded without error by that relay. The encoder and transmitter is under the control of the detector in accordance with a selection scheme, after each received block.

Provided are a method for reporting a state of a relay function for another network node in a radio communication system and an apparatus using the method. The method detects a state of a relay function of a first network node and transmits a report for the detected state of the relay function to a second network node.

Method and device for configuring a waveform at a transmitter are provided. The method includes: receiving at least one input signal, each input signal corresponding to a subcarrier spacing setting; performing IDFT pre-processing to each input signal, the IDFT pre-processing including DFT pre-coding or offset modulation; performing IDFT to each input signal which is subjected to the IDFT pre-processing, the IDFT including an IDFT with parameters including resource mapping and a corresponding IDFT size; performing IDFT post-processing to each input signal which is subjected to the IDFT to obtain at least one output signal, the IDFT post-processing including cyclic extension and time-domain windowing; adding the at least one output signal in time domain; and transmitting the added signal through a corresponding antenna port. Waveforms are configured flexibly according to practical scenarios at the transmitter to determine a most suitable waveform for current scenario, which meets practical requirements of 5G technology.

A wireless relay device that performs relay of encrypted data over a wireless network, the wireless relay device, includes: a determiner that determines whether or not there is an abnormality using first data which is transmitted to its own device from wireless devices belonging to a preset section among wireless devices joining the wireless network; a transmission controller that transmits second data indicating a result of the determination of the determiner to a preset transmission destination; and an encryption processor that decrypts the first data and encrypts the second data transmitted by the transmission controller.

A dynamic hierarchical cellular system implementing multi-hop encapsulation, wherein in at least one message destined for an individual base station functionality, the individual base station functionality's header is encapsulated within an individual mobile station functionality's header, so as to allow said message to be routed by said router to the individual base station functionality, via the individual mobile station functionality.

The present application relates generally to signal distribution networks carrying signals on coaxial cables where frequency multiplexing techniques are utilised to provide greater data transmission bandwidths. In one aspect, the application provides a tap for use in a coaxial distribution network, the tap including: an upstream port, a downstream port, and at least one drop port, and a number of signal paths coupled between the upstream port and the downstream port, each signal path having a passband frequency range which is not common to any other signal path.

The present application relates generally to signal distribution networks carrying signals on coaxial cables where frequency multiplexing techniques are utilised to provide greater data transmission bandwidths. In one aspect, the application provides a tap for use in a coaxial distribution network, the tap including: an upstream port, a downstream port, and at least one drop port, and a number of signal paths coupled between the upstream port and the downstream port, each signal path having a passband frequency range which is not common to any other signal path.

A controller, a wireless module and a wireless repeater, by which a possibility of interruption of wireless communication between the controller and a wireless operation panel can be significantly reduced. The wireless system includes a robot and a controller for controlling the robot. When the robot is to be taught, a human uses a wireless teaching pendant so as to teach the robot. The controller has a wireless module for wirelessly communicating with the teaching pendant, and the wireless module is configured to receive a signal from the teaching pendant via at least one wireless repeater, as well as a signal directly transmitted from the teaching pendant. In other words, the wireless module receives a multiplexed signal generated by multiplexing signals from the teaching pendant by using at least one wireless repeater.