Provided is a mobile station which communicates with abase station using a radio channel, the mobile station comprising: a switching unit configured to switch from a packet reception period, during which packet reception can be executed, to a packet reception halt period, during which packet reception is halted; a transmission unit configured to transmit, to the base station, a result of receiving a packet sent from the base station, as a reception result notification signal; a packet reception determination unit configured to determine a packet reception fault; and a reception period determination unit configured to extend the packet reception period if the packet reception fault is determined by the packet reception determination unit.

The present disclosure relates to a method and apparatus for transmitting and receiving data in a wireless communication system. In particular, the present disclosure relates to a scheduling method and apparatus for transmitting and receiving data in a wireless communication system using a sliding window superposition coding scheme. In the present disclosure, in a wireless communication system, if a UE is located in a cell edge, data throughput can be improved. An eNB using an SWSC scheme can provide fast scheduling. An eNB can provide higher throughput.

A data processing method by a data sending apparatus is described. The method includes receiving a data packet from a PDCP layer, where the data packet is used as an RLC SDU. The method further includes encapsulating the RLC SDU into at least one RLC PDU, where each one of the at least one RLC PDU includes a header and a payload. The payload carries data from a single RLC SDU. It can be learned that a transmit end no longer performs concatenation processing at the RLC layer on the data packet. In this way, concatenation processing at the transmit end is reduced, and processing complexity and processing latency are further reduced. In addition, processing at a receive end also becomes simpler and more efficient.

An operation method of a base station in a communication system includes transmitting, to a terminal, a radio resource control (RRC) message including transmission configuration information (TCI)-state configuration information including information indicating a starting beam index and an ending beam index and reference signal related information; transmitting, to the terminal, a first downlink control information (DCI) including a first TCI indicating the starting beam index and first resource allocation information; and transmitting, to the terminal, a first physical downlink shared channel (PDSCH) through a resource indicated by the first resource allocation information by using a starting beam indicated by the first TCI.

A first communication apparatus dynamically controls data flow in aggregated medium access control (MAC) protocol data unit (AMPDU) aggregation by negotiating an initial block acknowledgement (Block-ACK) window size for the AMPDU aggregation with the second communication apparatus. The first communication apparatus adjusts the AMPDU aggregation during subsequent communication with the second communication apparatus by creating a Block-ACK frame with a reserved field, which has a value indicating a change to the AMPDU aggregation, and then transmitting the Block-ACK frame to the second communication apparatus.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a multicast or broadcast radio bearer (MRB) in a radio link control (RLC) acknowledged mode (AM). The UE may determine an adjustment of an RLC AM transmission window of a base station. The RLC AM transmission window may be associated with retransmission of RLC packets associated with the MRB. The UE may synchronize an RLC AM reception window of the UE with the RLC AM transmission window based at least in part on determining the adjustment of the RLC AM transmission window of the base station. The RLC AM reception window may be associated with reassembly of RLC packets associated with the MRB. Numerous other aspects are provided.

Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently retransmitting radio link control (RLC) protocol data units (PDUs) to one or more UEs. When a user equipment (UE) fails to receive or decode an RLC PDU transmitted by a base station, the UE may transmit a status PDU to the base station indicating that the UE failed to receive or decode the RLC PDU. The base station may receive the status PDU from the UE, and the base station may generate a repair PDU that includes redundant bits of the lost PDU (e.g., the PDU that the UE failed to receive or decode). The base station may then transmit the repair PDU to the UE, and the UE may use the redundant bits in the repair PDU (e.g., in combination with buffered PDUs) to attempt to correctly decode the lost PDU.

A transmitter (e.g. a packet data convergence protocol, PDCP, in the transmitter), which may be a base station for downlink communications or a user equipment device for uplink communications, may control timing of the delivery of duplicate (same) packets to multiple (e.g. two) wireless links (e.g. radio link control links) for transmission to a receiver, based at least on synchronization information received from the receiver. The duplicate packets may be transmitted over the multiple wireless links to the receiver, which may receive the duplicate packets over the multiple wireless links. The receiver may collect and/or generate synchronization information indicative of the timing or latency between the multiple wireless links, based at least on the respective receive timings of the duplicate packets over the multiple wireless links. The receiver may transmit a report containing the synchronization information to the transmitter periodically and/or in response to a trigger event.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may observe control channel monitoring occasions (PMOs) corresponding to different beams configured by a base station. The UE may identify a PMO in a system information window to monitor for downlink control information scheduling a shared channel carrying a system information message. The UE may receive an indication of which synchronization signal/physical broadcast channel (SS/PBCH) blocks are actually transmitted by the base station and determine corresponding PMOs within the system information window. The UE may then monitor for the downlink control channel within the system information window during the corresponding PMOs. The base station and the UE may also implement techniques for system information message repetition within a system information window.

Methods, systems, and devices for wireless communications are described. A receiving device may receive, at a first operational layer of the receiving device, one or more protocol data units (PDUs) within a set of PDUs. The receiving device may identify, at a second operational layer of the receiving device, a sequence gap associated with a missing PDU from the set of PDUs, the first operational layer being a lower operational layer of the receiving device than the second operational layer. The receiving device may determine, at the second operational layer, that a triggering condition associated with the missing PDU has occurred. The receiving device may provide, by the second operational layer and based at least in part on the triggering condition occurring, an indication to update a reception buffer of the first operational layer to a last received protocol data unit of the set of PDUs.