The apparatus of wireless communication may include a transmitter connected to a receiver through a split carrier including a first carrier and a second carrier, and the transmitter may be configured to schedule transmission data at PDCP level by splitting the transmission data to first packets and second packets based on a relative scheduling delay between the first carrier and the second carrier, and scheduling the first packets and the second packets on different links based on a scheduling proportion, and transmit the first packets via the first carrier and the second packets via the second carrier. The transmitter may sequentially transmit the transmission data starting at an offset as the second packets to a second RLC level associated with the second carrier, wherein the offset is determined based on the relative scheduling delay.

A wireless device receives message(s) comprising: a first value for a downlink hybrid automatic repeat request (HARQ) round-trip-time (RTT) timer; and a second value for a downlink discontinuous reception (DRX) retransmission timer. A downlink control information indicating downlink transmission of a transport block is received. The downlink HARQ RTT timer is started with the first value in response to receiving the downlink control information. The first value indicates a first number of symbols. The downlink DRX retransmission timer is started with the second value in response to the downlink HARQ RTT timer expiring and the transport block not being successfully decoded. The second value indicates a second number of slot lengths. A downlink control channel is monitored while the downlink DRX retransmission timer is running.

Peer devices may wirelessly communicate with each other over a bidirectional sidelink logical channel (LCH) through an established bidirectional sidelink radio bearer. An initiating device of the peer devices may dynamically select a logical channel ID for establishing a fully bidirectional or semi-bidirectional SLRB. At least two alternative sidelink radio resource control (PC5-RRC) procedures may ensure the SLRB parameters are configured correctly in the established logical channel. The procedures also allow the network to configure a limited SLRB which is used to couple the SLRB configuration in the direction in which limited traffic (e.g. feedback information such as robust header compression feedback and/or status reports) is transmitted.

A method and a user equipment (UE) for controlling Discontinuous Reception (DRX) behavior on multiple radio interfaces are provided. The method includes receiving, from a Base Station (BS), a first set of timers configured for controlling a first DRX behavior of the UE on a Uu interface to the BS; performing control channel monitoring according to the first set of timers; identifying that a Sidelink (SL) activity occurs on an SL interface that is a PC5 interface, the SL activity associated with one or more SL destinations on the PC5 interface; and starting or restarting at least one of the first set of timers in response to identifying the SL activity.

A method for transmitting information and a terminal device are disclosed by the embodiments of the present application, where the method includes: receiving, by a terminal device, first information transmitted by a network device at an nth time unit, or transmitting, by the terminal device, the first information to the network device at the nth time unit, where the first information is used to indicate prolonging or stopping of an active Time of DRX; determining, by the terminal device, whether to report CSI and/or SRS to the network device at an (n+m+q)th time unit, where m is determined based on a scheduling timing sequence set and/or an ACK/NACK feedback timing sequence set, and the scheduling timing sequence set and the ACK/NACK feedback timing sequence set respectively comprise multiple values, where q is any integer greater than or equal to 0.

A method of operating multiple time alignment timers (TimeAlignmentTimer) is provided for facilitating communication between and evolved Node B (eNB) and a User Equipment (UE) in a Long Term Evolution (LTE) system supporting multiple carriers. The method includes starting a first TAT of a first group including the primary cell, starting a second TAT when Timing Advance (TA) information on a second group not including the primary cell is received; and determining transmission of at least one of a Hybrid Automatic Repeat Request Acknowledgement/Negative-acknowledgement (HARQ ACK/NACK), a physical uplink control channel, and a sounding reference signal according to a start and an expiration of at least one of the first and second TATs.

A user equipment (UE) starts a downlink (DL) discontinuous reception (DRX) retransmission timer for a DL hybrid automatic repeat and request (HARQ) process of the UE. The UE monitors a physical downlink control channel (PDCCH) while the DL DRX retransmission timer for the DL HARQ process is running. The UE stops the DL DRX retransmission timer for the DL HARQ process when the UE receives a PDCCH indicating a uplink (UL) transmission.

A wireless device includes one or more processors and memory storing instructions. When executed by the one or more processors, the instructions cause the wireless device to receive messages comprising a downlink hybrid automatic repeat request (HARQ) round-trip-time (RTT) timer value and a downlink discontinuous reception (DRX) retransmission timer value, receive a downlink control information indicating downlink transmission of a transport block, start a downlink HARQ RTT timer with the downlink HARQ RTT timer value in response to receiving the downlink control information, start a downlink DRX retransmission timer with the downlink DRX retransmission timer value in response to the downlink HARQ RTT timer expiring and the transport block not being successfully decoded, and monitor a downlink control channel while the downlink DRX retransmission timer is running.

Control information may be used to schedule communications between a wireless device and a base station. The wireless device may monitor control channels associated with one or more cells to receive the control information.

Control information may be used to schedule communications between a wireless device and a base station. The wireless device may monitor control channels associated with one or more cells to receive the control information.