A computer-implemented method and apparatus for monitoring the performance of a plurality of network nodes interconnected in a multi-hop arrangement using at least one node performance assessment threshold is described. A plurality of data sets is obtained. A data set comprises a respective value of a performance metric for each of the plurality of network nodes. Each of the plurality of data sets is classified as normal or abnormal by comparing the respective values of the performance metric of each of the plurality of network nodes to a corresponding normality threshold, thus providing a plurality of classified data sets. The plurality of classified data sets is processed using a machine-learning algorithm in order to derive, for at least one network node of the plurality of network nodes, a node performance assessment threshold indicative of a value of the performance metric of the at least one node at which the plurality of network nodes has a predetermined likelihood of being classified as normal.

A method for indicating a frequency band state is performed by a base station. The method includes: detecting states of n sub frequency bands in a shared spectrum, in which n≥1; in cases where there is an idle sub frequency band in the n sub frequency bands, sending, at a starting position of occupancy time when the idle sub frequency band is occupied, n pieces of preset state indication information to a terminal through the idle sub frequency band, the n pieces of state indication information being used for indicating the states of the n sub frequency bands.

A method for indicating a frequency band state is performed by a base station. The method includes: detecting states of n sub frequency bands in a shared spectrum, in which n≥1; in cases where there is an idle sub frequency band in the n sub frequency bands, sending, at a starting position of occupancy time when the idle sub frequency band is occupied, n pieces of preset state indication information to a terminal through the idle sub frequency band, the n pieces of state indication information being used for indicating the states of the n sub frequency bands.

Methods and apparatuses are described herein for reporting channel failure, and may be used, among others, for New Radio (NR) operation in unlicensed spectrum (NR-U). Upon detecting a consistent uplink (UL) listen-before-talk (LBT) failure or upon detecting a beam failure on a cell, a Scheduling Request (SR) may be triggered to have a UL resource granted for transmission of the failure to another cell, or to a subset of other cells, using, for example, a failure recovery Medium Access Control-Control Element (MAC-CE). If no grant of an available UL resource can be obtained for transmission of the MAC-CE, or the grant is not suitable for the failure reporting, a failure recovery SR may be transmitted repeatedly to obtain an UL grant suitable for transmitting the failure report. In some cases, a WTRU may initiate a random-access procedure for transmitting the MAC-CE, for example when resources for failure reporting are not configured.

Methods and apparatuses are described herein for reporting channel failure, and may be used, among others, for New Radio (NR) operation in unlicensed spectrum (NR-U). Upon detecting a consistent uplink (UL) listen-before-talk (LBT) failure or upon detecting a beam failure on a cell, a Scheduling Request (SR) may be triggered to have a UL resource granted for transmission of the failure to another cell, or to a subset of other cells, using, for example, a failure recovery Medium Access Control-Control Element (MAC-CE). If no grant of an available UL resource can be obtained for transmission of the MAC-CE, or the grant is not suitable for the failure reporting, a failure recovery SR may be transmitted repeatedly to obtain an UL grant suitable for transmitting the failure report. In some cases, a WTRU may initiate a random-access procedure for transmitting the MAC-CE, for example when resources for failure reporting are not configured.

Methods, systems, and devices are used to implement BFR, SL-RS for BFD, radio link monitoring, or frequency assisted beam failure recovery, among other things.

Methods, systems, and devices are used to implement BFR, SL-RS for BFD, radio link monitoring, or frequency assisted beam failure recovery, among other things.

A method and a device in a communication node for wireless communications are provided in the present disclosure. A communication node receives a first signaling, the first signaling indicating a first candidate cell set; and determines a radio connection failure; and as a response to the determined radio connection failure, selects a first target cell; when the first target cell does not belong to the first candidate cell set, transmits a second signaling, the second signaling comprising first information; when the first target cell is a candidate cell in the first candidate cell set, transmits a third signaling, the third signaling not comprising the first information. The present disclosure proposes a scheme which reports no RLF-related message after recovery of radio connection failure, thus avoiding unnecessary information reporting and reducing signaling overhead, to the benefit of network optimization.

A user equipment may determine PDSCH receptions to transmit corresponding HARQ-ACK information in a HARQ-ACK codebook, and transmit the HARQ-ACK codebook on the basis of the PDSCH receptions. The determining of the PDSCH receptions may comprise: determining the PDSCH receptions on the basis of a union of first candidate values of a PDSCH_to_HARQ-ACK timing for a first DCI format and second candidate values of a PDSCH_to_HARQ-ACK timing for a second DCI format.

A user equipment may determine PDSCH receptions to transmit corresponding HARQ-ACK information in a HARQ-ACK codebook, and transmit the HARQ-ACK codebook on the basis of the PDSCH receptions. The determining of the PDSCH receptions may comprise: determining the PDSCH receptions on the basis of a union of first candidate values of a PDSCH_to_HARQ-ACK timing for a first DCI format and second candidate values of a PDSCH_to_HARQ-ACK timing for a second DCI format.