A wireless device receives one or more messages comprising one or more configuration parameters. The one or more configuration parameters indicate a plurality of transmission configuration indication (TCI) states. comprise at least one configuration parameter of a first downlink transmission group and a second downlink transmission group. A medium access control control element (MAC CE) is received. The MAC CE comprises: a first field identifying one of the first downlink transmission group and the second downlink transmission group; and a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field. A downlink control information (DCI) scheduling a transport block is received. In response to receiving the DCI, the transport block based on a TCI state among the one or more TCI states of the downlink transmission group is received.

A wireless device receives one or more messages comprising one or more configuration parameters. The one or more configuration parameters indicate a plurality of transmission configuration indication (TCI) states. comprise at least one configuration parameter of a first downlink transmission group and a second downlink transmission group. A medium access control control element (MAC CE) is received. The MAC CE comprises: a first field identifying one of the first downlink transmission group and the second downlink transmission group; and a second field activating one or more TCI states, of the plurality of TCI states, for a downlink transmission group identified by the first field. A downlink control information (DCI) scheduling a transport block is received. In response to receiving the DCI, the transport block based on a TCI state among the one or more TCI states of the downlink transmission group is received.

The 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 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. The disclosure discloses a method and apparatus for reducing overhead of an Ethernet frame, a method and apparatus for efficiently performing a connection resume procedure of a terminal, and a method and apparatus for preventing a loss of data when performing an uplink user data compression procedure.

The 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 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. The disclosure discloses a method and apparatus for reducing overhead of an Ethernet frame, a method and apparatus for efficiently performing a connection resume procedure of a terminal, and a method and apparatus for preventing a loss of data when performing an uplink user data compression procedure.

A method for random access (RA) performed by a user equipment (UE) is provided. The method includes receiving a first beam failure recovery configuration of an uplink (UL) bandwidth part (BWP); initiating a first RA procedure for notifying a base station of a beam failure occurrence in a serving cell when a number of beam failure instances is larger than or equal to a threshold; receiving a second beam failure recovery configuration of the UL BWP before completion of the first RA procedure; stopping the first RA procedure upon receiving the second BFR configuration of the UL BWP; and initiating a second RA procedure for notifying the base station of the beam failure occurrence regardless of a number of beam failure instances received after stopping the first RA procedure.

A method for random access (RA) performed by a user equipment (UE) is provided. The method includes receiving a first beam failure recovery configuration of an uplink (UL) bandwidth part (BWP); initiating a first RA procedure for notifying a base station of a beam failure occurrence in a serving cell when a number of beam failure instances is larger than or equal to a threshold; receiving a second beam failure recovery configuration of the UL BWP before completion of the first RA procedure; stopping the first RA procedure upon receiving the second BFR configuration of the UL BWP; and initiating a second RA procedure for notifying the base station of the beam failure occurrence regardless of a number of beam failure instances received after stopping the first RA procedure.

At least a portion of a physical layer (PHY) preamble of a PHY protocol data unit (PPDU) for transmission in a vehicular communication network is generated to span a first bandwidth a) based on a first orthogonal frequency division multiplexing (OFDM) numerology that is defined for a second bandwidth greater than the first bandwidth and b) down-clocked to generate the at least the portion to span the first bandwidth. The at least the portion includes a legacy portion decodable by a legacy device operating in the network. A data portion is generated based on a second OFDM numerology defined to span the second bandwidth. The PPDU is generated to include the at least the legacy portion of the PHY preamble in a first sub-band, a duplicate of the at least the portion of the preamble in a second sub-band, and the data portion that spans the second bandwidth.

At least a portion of a physical layer (PHY) preamble of a PHY protocol data unit (PPDU) for transmission in a vehicular communication network is generated to span a first bandwidth a) based on a first orthogonal frequency division multiplexing (OFDM) numerology that is defined for a second bandwidth greater than the first bandwidth and b) down-clocked to generate the at least the portion to span the first bandwidth. The at least the portion includes a legacy portion decodable by a legacy device operating in the network. A data portion is generated based on a second OFDM numerology defined to span the second bandwidth. The PPDU is generated to include the at least the legacy portion of the PHY preamble in a first sub-band, a duplicate of the at least the portion of the preamble in a second sub-band, and the data portion that spans the second bandwidth.

The present disclosure relates to transmitting and receiving a beam report at a UE and a base station. The base station can configure a cDRX cycle with the UE. Also, the UE can wake up during an off period of the cDRX cycle. The UE can also compare a first metric of at least one of a plurality of candidate beams and a second metric of a current beam for communication with the base station. Additionally, the UE can transmit a beam report to the base station, during the off period, based on the comparison of the first metric of the at least one of the plurality of candidate beams and the second metric of the current beam. The UE can also select, during the off period of the cDRX cycle, the at least one of the plurality of candidate beams for communication with the base station.

The present disclosure relates to transmitting and receiving a beam report at a UE and a base station. The base station can configure a cDRX cycle with the UE. Also, the UE can wake up during an off period of the cDRX cycle. The UE can also compare a first metric of at least one of a plurality of candidate beams and a second metric of a current beam for communication with the base station. Additionally, the UE can transmit a beam report to the base station, during the off period, based on the comparison of the first metric of the at least one of the plurality of candidate beams and the second metric of the current beam. The UE can also select, during the off period of the cDRX cycle, the at least one of the plurality of candidate beams for communication with the base station.