The present disclosure relates to the technical field of communications, and disclosed thereby are a resource switching method and a resource allocation method, apparatus, device and system. The method comprises: when a terminal determines that a first BWP currently used needs to be switched, the terminal selects a second BWP among at least two BWPs configured in advance; and the terminal switches from the first BWP to the second BWP. By means of the present disclosure, a terminal may autonomously configure and switch BWPs without needing an access network device to specify the BWP for the terminal, and the BWP may be introduced into a communication system supporting large bandwidth such as D2D, thus reducing the power consumption of the terminal within the communication system, and ensuring that the communication of the terminal is effective by switching the BWP in time.

Provided are a method for performing sidelink communication by a first apparatus (100) and an apparatus supporting same. The method may comprise the steps of: performing channel busy ratio (CBR) measurement on at least one bandwidth part (BWP) associated with a first sidelink service, among a plurality of BWPs included in a first carrier; and determining a CBR value of the first carrier, on the basis of the measured CBR value of at least one BWP associated with the first sidelink service.

Disclosed are techniques for wireless communication. In an aspect, an access point (AP) communicates with at least one wireless station (STA) and supporting a plurality of communication devices and communication modes on a communication medium, establishes a single-link communication mode with the at least one wireless STA and at least one communication device of the plurality of communication devices over a single-link, establishes a multi-link communication mode with the at least one wireless STA and the at least one communication device over a multi-link, and dynamically transitions between the single-link communication mode and the multi-link communication mode based upon a determination related to a best mode of delivery for a next period.

A wireless device (12) detects a problem on a channel, subband, bandwidth part, carrier, cell, or frequency band (18) deployed within unlicensed frequency spectrum. The problem may, for example, be that a measure of channel occupancy within and/or clear channel assessment failure within the channel, subband, bandwidth part, carrier, cell, or frequency band (18) exceeds an occupancy or failure threshold. Responsive to detecting the problem, the wireless device (12) switches to, or requests a switch to, a different channel, subband, bandwidth part, carrier, cell, or frequency band (20). In some embodiments, the wireless device (12) requests the switch by transmitting, to a network node (16), a problem report that reports the detected problem. Based on the report, the network node (16) may switch the wireless device (12) to the different channel, subband, bandwidth part, carrier, cell, or frequency band (20).

Embodiments herein relate to e.g., a method performed by a communication node for controlling one or more communication parameters of a channel between a first communication device and a second communication device in a wireless communication network. The communication node, upon obtaining an indication of a channel quality of the channel to the second communication device, uses a correction value and the indication when determining the one or more communication parameters. The correction value is based on a decoding success of one or more previous transmissions, which one or more previous transmissions are based on an obtained previous indication of a previous channel quality from the second communication device, and wherein a change of the correction value relative a previous correction value is limited.

Embodiments herein relate to e.g., a method performed by a communication node for controlling one or more communication parameters of a channel between a first communication device and a second communication device in a wireless communication network. The communication node, upon obtaining an indication of a channel quality of the channel to the second communication device, uses a correction value and the indication when determining the one or more communication parameters. The correction value is based on a decoding success of one or more previous transmissions, which one or more previous transmissions are based on an obtained previous indication of a previous channel quality from the second communication device, and wherein a change of the correction value relative a previous correction value is limited.

Provided are a method and a device for triggering a beam failure recovery (BFR) procedure of a multibeam system by means of the steps of: detecting a beam failure by monitoring a wireless link connected with a base station; identifying a candidate transmission beam of the base station; and transmitting a BFR request to the base station when the candidate transmission beam of the base station is identified.

Provided are a method and a device for triggering a beam failure recovery (BFR) procedure of a multibeam system by means of the steps of: detecting a beam failure by monitoring a wireless link connected with a base station; identifying a candidate transmission beam of the base station; and transmitting a BFR request to the base station when the candidate transmission beam of the base station is identified.

A configuration method for beam failure and a terminal are provided, and the method includes: receiving notification signaling used to notify a change in a state of a cell, a cell group, or a carrier group; configuring at least one of a counter and a timer according to the change in the state of the cell, the cell group, or the carrier group, and/or, stopping a specific operation during a beam failure recovery procedure according to the change in the state of the cell, the cell group, or the carrier group, wherein the counter and the timer are a counter and a timer used for beam failure detection and configured by the terminal for the cell or a cell in the cell group or a cell in a carrier group.

A beam recovery method and apparatus such that the method includes: communicating, by a relay node, with a network device by using a serving beam; after a serving beam failure is detected, further monitoring the serving beam and determining whether the serving beam is recovered; and if the serving beam is recovered, further communicating, by the relay node, with the network device by using the serving beam. According to the beam recovery method, a waste of resources is reduced during beam recovery, and a time for beam recovery is further shortened.