Provided are a connection establishment method and device, a link state notification method and device, an interface establishment method and device, an information transmission method and device, an integrated access backhaul node, a centralized unit, a system, and a storage medium. The connection establishment method includes: acquiring address information of a first CU; and establishing a connection with the first CU according to the address information of the first CU.

Techniques for dynamic optimization of radio access network sites are provided. A wireless communications infrastructure identifies that a piece of user equipment(UE) is connected to a base station associated with a current Radio Access Network(RAN) site that does not have sufficient backhaul resources to support the piece of UE. A target RAN site that has sufficient backhaul resources to support the piece of UE is identified. The target RAN site associated with at least one base station. A Radio Frequency (RF) signal transmitted from at least one of the base station associated with the current RAN site and the at least one base station associated with the target RAN site is modified. The modification causes the piece of UE to handover from the base station associated with the current RAN site to the at least one base station associated with the target RAN site.

A first base station receives from a second base station, a handover request message comprising traffic pattern parameters of a wireless device. The traffic pattern parameters comprise a first traffic periodicity, a first timing offset, and a first message size. A handover request acknowledge message indicating at least one periodic resource configuration parameter determined based on the first traffic periodicity is sent to the second base station. A random access preamble associated with a handover of the wireless device is received from the wireless device. The first base station determines a resource block assignment based on the first message size. A control command is transmitted to the wireless device. The control command indicates: activation of radio resources associated with the at least one periodic resource configuration parameter; and the resource block assignment.

A random access method includes: determining whether a currently selected beam for transmitting a preamble is identical to one of at least one recorded beam, clearing all previously recorded beams, recording the currently selected beam, and transmitting the preamble at a boosted pilot transmission power when it is determined that a value of a pilot power boost counter does not reach a maximum value.

A method includes receiving initial acknowledgement resource information at a user device from a base station. The initial acknowledgement resource information is associated with a subset of acknowledgement resources. The method includes determining in dependence on the initial acknowledgement resource information which of the subset of acknowledgement resources is to be used. The user device transmits an acknowledgement on the determined resource.

Provided are a method and apparatus for processing Integrated Access and Backhaul (IAB) node information in an IAB network, including a second IAB node receives notification information transmitted by a first IAB node, where the notification information includes at least one of: notification information for notifying a connection handover event and/or a connection reestablishment event, and instruction information for instructing to perform Packet Data Convergence Protocol (PDCP) status reporting.

Methods, apparatuses, and systems for wireless communications are described. A base station may send a message with configuration parameters to a wireless device, and the configuration parameters may be for at least two different types of carriers used for communications.

A method and apparatus for transmitting a buffer status report for a bi-directional transmission in a wireless communication system is provided. A user equipment (UE) triggers a buffer status report for the bi-directional transmission, and transmits the buffer status report for the bi-directional transmission or a scheduling request for the bi-directional transmission to a network. The bi-direction transmission may correspond to vehicle-to-everything (V2X) communication.

The present disclosure relates to: a communication technique 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 present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to one embodiment of the present disclosure, provided are a method by which a terminal performs cell reselection in a satellite network (or a non-terrestrial network), and a device.

A target node includes an S1 interface which includes an interface between the target node and a gateway, an X2 interface which includes an interface between a source node and the target node, and a transceiver which receives data from the S1 interface and data from the X2 interface. The transceiver sends the data from the X2 interface before sending the data from the S1 interface to a mobile device after the mobile device completes a handover from the source node to the target node.