Methods, systems, and devices related to related to digital wireless communication, and more specifically, to techniques related to an improved repetition transmission method. In one exemplary aspect, a method for wireless communication is disclosed. The method can include receiving, at a terminal configured to perform a number of transmission repetitions according to a rule, a first message from a network node, the first message including an indication to modify at least one transmission repetition of the number of transmission repetitions according to the rule. The method can also include modifying, by the terminal, the at least one transmission repetition of the number of transmission repetitions identified in the first message.

Methods of operating a wireless device in a communication network are provided. Such methods include receiving a scheduling message that includes a schedule identifying a plurality of transmission blocks, TBs and determining a quantity of the plurality of TBs that are identified in the scheduling message. Methods may include determining a quantity of Hybrid Automatic Repeat Request Acknowledgement, HARQ ACKs in an ACK bundle identified in the scheduling message and dynamically generating an acknowledgement timer value that corresponds to the quantity of the plurality of TBs and the quantity of HARQ ACKs in the ACK bundle.

An access network device sends first information and second information to a terminal, where the first information includes a value set of a communication time interval, and the second information indicates a value of the communication time interval in the value set, and the value is used to determine timing duration of a hybrid automatic repeat request (HARQ) round trip time (RTT) timer. The communication time interval includes at least one of a time interval from the terminal receiving downlink scheduling grant information to the terminal receiving downlink data scheduled by using the downlink scheduling grant information, a time interval from the terminal receiving downlink data to the terminal sending HARQ feedback information of the downlink data, and a time interval from the terminal receiving uplink scheduling grant information to the terminal sending uplink data scheduled by using the uplink scheduling grant information.

A method for providing backhaul dynamic link distance for backhaul is disclosed. In one embodiment, the method includes propagating, by a network owner, a configured link distance parameter as part of beacon; using, by a mesh node joining the network, the configured link distance parameter for backhaul to set slot-time and Acknowledgement (ACK)/Clear To Send (CTS) timeout values before joining the network; wherein the configured link distance parameter for backhaul is part of a backhaul network profile.

A method for monitoring a communications channel between a terminal device and a network device is described. The method includes: obtaining a first search space configuration and a second search space configuration. The first search space configuration includes a first search space set and the second search space configuration includes a second search space set, or the first search space configuration includes a first search space parameter and the second search space configuration includes a second search space parameter. The method further includes monitoring a physical downlink control channel (PDCCH) based on the first search space configuration if a first condition is met. The first condition includes: a first timer is not in a running state; or monitoring, by the terminal device, a PDCCH based on the second search space configuration if a second condition is met. The second condition includes a first timer is in a running state.

Methods and apparatus for uplink DRX and sidelink DRX are disclosed. A WTRU may receive a configuration of a hybrid automatic repeat request (HARQ) round trip time (RTT) timer. The WTRU may start the HARQ RTT timer in response to an event. The event may comprise receiving a downlink control information (DCI) that schedules a sidelink transmission. The event may comprise transmission of a sidelink control information (SCI) for the sidelink HARQ process. The event may comprise receiving HARQ feedback for a sidelink transmission. The event my comprise a pre-configured time period following a physical sidelink feedback channel (PSFCH) resource for feedback associated with a HARQ transmission. The WTRU may determine a value of a timer based on a sidelink transmission property or a sidelink transmission time.

To appropriately perform communication even in a case where a transmission timing/transmission period for retransmission control information is flexibly controlled (is variable), an aspect of a user terminal according to the present invention includes a transmitting section that transmits retransmission control information for DL transmission and a control section that controls transmission of the retransmission control information at certain timings reported from a base station. A time window is configured for the retransmission control information, the control section controls transmission of the retransmission control information, based on the certain timings and the time window configured for the retransmission control information.

A wireless device may receive configuration parameter(s) of a time alignment timer associated with a cell. The wireless device may determine to defer transmission of a HARQ feedback, associated with a transport block, from a first timing to a second timing. The wireless device may transmit, via the cell, the HARQ feedback in the second timing based on the time alignment timer running in the second timing and regardless of whether the time alignment timer is running or is not running in the first timing.

A wireless device receives one or more radio resource control message comprising configuration parameters of a plurality of cells. An activation command indicating activation of a plurality of secondary cells (SCells) of the plurality of cells is received. A first downlink control information (DCI), comprising a power saving indication bitmap, is received. Each bit of the power saving indication bitmap indicates whether to monitor a downlink control channel on a corresponding activated SCell of the plurality of SCells. The wireless device starts monitoring a downlink control channel of an activated SCell of the activated SCells, in response to a bit, of the power saving indication bitmap, corresponding to the activated SCell, indicating monitoring the downlink control channel. A second DCI is received via the downlink control channel.

A wireless device operating in a communication network can, responsive to receiving a downlink control indication (“DCI”) command to activate or reactivate a configured grant (“CG”) configuration that is associated with a first transmission block (“TB”) having a first transmission block size (“TBS”), handling a non-idle hybrid automatic repeat request (“HARQ”) process on the CG configuration based on whether the first TBS is different than a second TBS of a second TB associated with the non-idle HARQ process. The non-idle HARQ process can include a process of retransmitting the second TB using the CG for which an associated media access control (“MAC”) protocol data unit (“PDU”) has been submitted to lower layers for transmission to a network node, but for which successful reception acknowledgment has not been received from the network node.