The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart or connected cars, health care, digital education, retail business, and services associated with security and safety) on the basis of 5G communication technology and IoT-related technology. Disclosed are a method and an apparatus for configuring an efficient hierarchical layer 2 architecture and main functions thereof in a next-generation mobile communication system.

Embodiments of this application provide a random access processing method. A random access preamble and uplink data are sent in an initiation phase of a random access procedure, and the random access procedure is ended in time after feedback information for the uplink data is received. According to technical solutions provided in the embodiments of this application, a terminal side device may send the uplink data when sending the random access preamble in the random access procedure. In addition, the random access procedure can be ended in advance after the feedback information for the uplink data is received.

A method and a system for correcting cyclic redundancy check (CRC) for a frame with last bytes changed are provided. The method includes acquiring a data frame, calculating a CRC of a modified data frame, and determining a corrected CRC for the data frame based on at least the CRC of the modified data frame and a CRC correction field calculated on the bytes to be replaced at the end of the frame. An altered data frame includes the data frame with a number of last bytes of the data frame replaced with new bytes.

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). Disclosed is a method by a base station for use in a non-terrestrial network (NTN) comprising: transmitting one of a predetermined number of re-transmissions including a packet in a blind re-transmission mode to an user equipment (UE); receiving a channel quality indicator (CQI) message after the transmission; in response to a particular configuration of the received CQI message, terminating transmission of any remaining of the predetermined number of re-transmissions.

Some aspects described herein relate to reducing a delay in the retransmission of undelivered capability information segments. For example, when transmitting capability information via multiple segments, a UE may request the network to acknowledge each segment and/or may modify a network configured parameter to reduce the delay in retransmitting undelivered segments. In some aspects, a UE may attach to a network for a priority service, such as an emergency service or a short message service. In connection with the attachment, the UE may provide a reduced set of capability information that is relevant to the priority service and that omits at least some capability information irrelevant to the priority service.

According to certain embodiments, a method in a wireless device (110) includes transmitting a protocol data unit (PDU) or segment of a PDU on a first link and transmitting the PDU or the segment of the PDU on a second link. One or more retransmissions of the PDU or the segment of the PDU are scheduled on the second link. A positive acknowledgment is received from a receiver. The positive acknowledgement indicates a successful receipt of the PDU or the segment of the PDU on the first link. In response to receiving the positive acknowledgement, the one or more retransmissions of the PDU or the segment of the PDU on the second link are cancelled.

A downlink bandwidth part adjustment method, applicable to user equipment, includes: determining whether at least one timer associated with multiple active downlink bandwidth parts of a current serving cell of the user equipment times out; and if there is at least one timed-out timer among the at least one timer, deactivating each active downlink bandwidth part associated with the timed-out timer, and activating a downlink bandwidth part in a preset state corresponding to the each active downlink bandwidth part.

Apparatuses, methods, and systems are disclosed for sending and/or receiving feedback for a system information request. One apparatus includes a transmitter that transmits information indicating a request for system information. The apparatus includes a processor that monitors, during a predetermined time period, for a feedback response indicating that the request for the system information was received.

According to certain embodiments, a method in a wireless device (110) includes transmitting a protocol data unit (PDU) or segment of a PDU on a first link and transmitting the PDU or the segment of the PDU on a second link. One or more retransmissions of the PDU or the segment of the PDU are scheduled on the second link. A positive acknowledgment is received from a receiver. The positive acknowledgement indicates a successful receipt of the PDU or the segment of the PDU on the first link. In response to receiving the positive acknowledgement, the one or more retransmissions of the PDU or the segment of the PDU on the second link are cancelled.

The present application discloses a method and device for wireless communications, comprises receiving a first signaling, a second RNTI being used to generate a scrambling code of the first signaling, the first signaling being used to indicate a first time-frequency resource; receiving a first signal on the first time-frequency resource; a first bit block being used to generate the first signal; the first signaling indicating a new transmission; the first signaling indicating that a HARQ process number of the first signal is a first HARQ process number; the second RNTI being used to generate a scrambling code of the first signal; the method proposed in the present application can realize a DRX in a Point to Multipoint (PTM) transmission.