A method and a device for handling an adaptive retransmission in a wireless communication system. The method includes receiving a RRC signaling configuring that the UE skips an UL transmission if there is no data available for transmission, receiving an UL grant for retransmission for a HARQ process when a HARQ buffer of the HARQ process is empty, and discarding the UL grant for the retransmission even if there is data available for transmission.

A wireless device may receive a DCI indicating retransmission of a first TB via a second cell. An initial transmission of the first TB may be via a first cell. The wireless device may transmit or receive the retransmission of the first TB via the second cell based on the DCI.

Aspects relate to techniques for delaying accept request messages for sidelink network coded communication. A network coding device can receive from a transmitting wireless communication device a sidelink transmission including a packet and a network coding request flag requesting the network coding device perform retransmission(s) of the packet. The network coding device can then receive feedback information for the first packet from a receiving wireless communication device that received the packet at a first time. In addition, the network coding device can transmit an accept request message to the transmitting device indicating whether the network coding device accepts performing retransmission(s) of the packet at a second time different than the first time.

The invention relates to an improved transmission protocol for uplink data packet transmission in a communication system. A receiver of a user equipment receives a Fast Retransmission Indicator, referred to as FRI. The FRI indicates whether or not a base station requests a retransmission of a previously transmitted data packet. A transmitter of the user equipment retransmits the data packet using the same redundancy version as already used for the previous transmission of the data packet.

A random access method, a base station, and a user equipment (UE) are disclosed. The random access method includes: transmitting a first message for random access for the UE, the first message including a preamble message and a signal message; receiving a second message and a fourth message for random access for the UE at a time and determining random access for the UE is successful upon receiving the second message and the fourth message; and upon reception of a second message configured to request the UE to transmit the signal message, transmitting a third message comprising the signal message, receiving the fourth message in response to the third message, and determining random access for the UE is successful upon receiving the fourth message.

A method in a monitoring station configured for communication with a wireless device is described. The method includes determining a round trip time, RTT, that corresponds to a first packet transmitted to the wireless device; receiving a second packet from the wireless device; determining the second packet from the wireless device has been received without error based at least in part on an error-detecting field; and receiving a subsequent packet from the wireless device. The method further includes determining that the subsequent packet received is a second packet retransmission; determining a preamble receipt time of the subsequent packet; determining a delay value based in part on the RTT of the first packet, the length field of the subsequent packet, and data rate field of the subsequent packet. The first acknowledgement packet is transmitted timed at the delay value after the preamble receipt time of the subsequent packet.

A receiver and a method for receiving a radio communication is disclosed. The method includes receiving a burst encoded with a robust modulation coding scheme (MCS) as RX signals; generating, for each of the RX signals, a burst SNR, soft decision symbols and a packet; weighing, each of soft decision symbols with a respective burst SNR, to calculate soft combined symbols that are used to generate a Maximal-Ratio Combining (MRC) packet; and selecting, from the packets and the MRC packet, a CRC passed packet as an output. An adaptive dual burst transmitter is disclosed.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An embodiment of the present invention provides a method of a base station in a wireless communication system, the method comprising: transmitting, to a user equipment (UE), a master information block (MIB) including initial downlink bandwidth part (BWP) configuration information; and transmitting, to the UE, Remaining Minimum System Information (RMSI) including initial uplink bandwidth part (BWP) configuration information, wherein the RMSI is transmitted based on the initial downlink bandwidth part (BWP) configuration information.

According to an embodiment of the present disclosure, provided is a method in which a first device establishes sidelink communication. The method can comprise the steps of: transmitting first SCI to at least one device by means of at least one PSCCH; transmitting data and second SCI which is different from the first SCI to the at least one device by means of at least one PSSCH associated with the at least one PSCCH; determining a plurality of PSFCH resources for receiving a plurality of sidelink HARQ feedbacks associated with the data, on the basis of an index of a slot associated with the at least one PSSCH and an index of a sub-channel; receiving, from the at least one device, at least one sidelink HARQ feedback associated with the data on the basis of at least one PSFCH resource among the plurality of PSFCH resources; and determining to reselect a sidelink transmission resource associated with the at least one PSCCH or the at least one PSSCH, on the basis that a ratio of the total number of bits associated with ACK relative to the total number of bits associated with the plurality of sidelink HARQ feedbacks is equal to or less than a threshold value.

Among other things, embodiments of the present disclosure are directed toward reducing the complexity associated with low density parity check (LDPC)-based channel coding employed for physical downlink and uplink shared channels (PDSCH and PUSCH) for reduced capacity (RedCap) new radio (NR) user equipments (UEs). Other embodiments may be disclosed and/or claimed.