Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect an event associated with beam reporting for inter-cell beam management. The UE may transmit a beam report based at least in part on detecting the event. Numerous other aspects are described.

Provided are a method and an apparatus for processing handover between 5G base stations, which support beamforming and interwork with a 5G core network system in a next-generation/radio access network. The method of processing handover in a base station includes: receiving radio quality measurement information on a plurality of cells and on beams of the respective cells from a user equipment; determining whether handover is required based on the radio quality measurement information and transmitting a handover required message to a core network entity when it is determined that handover is required; and receiving a handover command message from the core network entity.

There is provided mechanisms for handling beam link failure. A method is performed by a network node. The method comprises detecting a beam link failure of a direct radio link between a transmission point of the network node and a first wireless device. The first wireless device is served by the transmission point on the direct radio link and has an indirect radio link to the transmission point via a second wireless device. The method comprises configuring, in response to detecting the beam link failure. The first wireless device with control signalling using the indirect radio link

Blockage detection in a wireless transmit receive unit includes performing a radio link measurement on one or more reference signals. The radio link measurement is compared to a comparing threshold and a blockage condition is indicated in response to the comparing of the radio link measurement meeting a threshold criterion on the comparing threshold.

Performance in a communications system is improved by determining whether an application executing over a data bearer is using transmission control protocol (TCP). A TCP ACK reduction request is received and at least one redundant TCP ACK is filtered out.

A wireless transmit receive unit (WTRU) is configured in dual connectivity with a master cell group and a secondary cell group. Uplink (UL) data is sent in an active one of the master cell group and the secondary cell group as an active UL transmission cell group. It is determined whether a UL transmission is to be switched to an alternate one of the master cell group and the secondary cell group and the UL traffic is switched from the active UL transmission cell group to the alternate cell group in response to the determination that the UL transmission is to be switched.

Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosed communication technique and system therefor can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and IoT-related technology. More specifically, a communication method of a terminal in a mobile communication system comprises the steps of: receiving, from a base station, system information including application specific congestion control for data communication (ACDC) configuration information for indicating whether to apply ACDC to a terminal belonging to a home public land mobile network (HPLMN); determining whether to permit access to the base station on the basis of parameters relating to the ACDC, when the application of the ACDC to the terminal belonging to the HPLMN is set according to the ACDC configuration information; and communicating with the base station according to the determination result.

Aspects described herein relate to wireless communications. According to some aspects, a first base station may coordinate with a second base station to select beamforming codewords. The first base station may receive an index indicating beamforming codewords used by a second base station. The first base station may select a beamforming codeword for use in transmitting signals to a wireless device based on the beamforming codeword indicated by the second base station.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a transmission configuration indicator (TCI) state for non-UE-dedicated communication on a physical channel, the TCI state being shared with UE-dedicated communication on the physical channel or not shared with UE-dedicated communication on the physical channel based at least in part on a rule. The UE may transmit or receive a communication using the TCI state. Numerous other aspects are described.

A beam alignment direction for a beam defined between a transmitter and a receiver can be adjusted by causing adjustments in the location (in altitude, in two-dimensional coordinates, or in both) of one or both of the transmitter and the receiver, where the adjustment in the location is carried out at whichever node among the transmitter and the receiver is an aerial node. In case it is determined that the beam alignment direction cannot be maintained in a desired range, a transmit receive point switching may be triggered before a beam failure happens.