Methods, systems, and devices for wireless communications are described. The described techniques provide for a first user equipment (UE) receiving, from an integrated access and backhaul (IAB) node, an indication that the IAB node supports sidelink communications. The indication may be broadcast by the IAB node or indicated via an established connection, such as a radio resource control (RRC) connection. The first UE may select the IAB node to relay communications between the first UE and a second wireless node based at least in part on the indication that the IAB node supports sidelink communications. The UE may communicate one or more data messages with the second wireless node via the IAB node in accordance the selecting of the IAB node to relay the communications.

The present application relates to devices and components including apparatus, systems, and methods for integrated access and backhaul radio link failure and handover scenarios in wireless communication systems.

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the disclosure provide a method, device and apparatus for initial access, wherein a method for initial access includes: receiving a first configuration message; and establishing a connection between a relay node and an anchor node, based on the first configuration message. The method provided in this disclosure establishes a connection between the relay node and a central unit of the anchor node through the information interaction between base stations and the information interaction between base station and relay node. The present disclosure provides a scheduling method and a first node. The method includes: receiving second scheduling related information reported by at least one second node and first scheduling related information reported by at least one UE that is connected to the at least one second node; generating scheduling information used by the at least one second node for scheduling the connected UE; and transmitting the generated scheduling information to the at least one second node and/or the connected UE. A corresponding second node, third node, and computer readable medium are also provided.

The present invention relates to a method for configuring a retransmission protocol on the uplink between a network node and a relay node in a mobile communication system, the configuration being performed at a network node or at a relay node, and to the corresponding relay node apparatus and network node apparatus capable of configuring the retransmission protocol. In particular, the number of transmission processes is determined based on the position of time intervals available for the transmission and may be selected in order to control the round trip time of the retransmission protocol. Once the number of transmission processes has been configured, the transmission processes are mapped on the available time intervals in a predefined order and repetitively.

A wireless communications device is configured to act as a remote node of a wireless access network by selecting, when the wireless communications device is in an idle mode in which it has not established a connection to the wireless communications network, an infrastructure equipment forming part of the radio access network of the wireless communications network to provide a network interface with a core network part of the wireless communications network via the selected infrastructure equipment.

Disclosed are a relay system synchronization method and apparatus, and a computer device and a storage medium. The method may comprise: a relay node determining a first slot boundary; the relay node sending downlink data to a child node by means of time alignment between a second slot boundary of the downlink data sent to the child node and the first slot boundary; in addition, the relay node determining a first timing advance at least according to the following information: a second timing advance for the relay node to send uplink data to a parent node and the transmission delay between the relay node and the child node; and the relay node sending the first timing advance to the child node, wherein the first timing advance is used for the child node to determine the sending time for sending the uplink data to the relay node.

Provided are an access method and transmission point. In the embodiments of the present invention, indication information sent by a second transmission point is received by means of a first transmission point and is used for indicating that said second transmission point supports relay functionality, such that said first transmission point is capable of accessing, according to the indication information, the wireless access network on which the second transmission point is located; thus the first transmission point is taken as a relay node and accesses the wireless access network.

Technologies directed to a wireless network with a cascaded star topology with multiple devices at multiples nodes are described. In one wireless network, multiple devices are manufactured as a common device type and deployed at different nodes of the wireless network. The devices are configured to operate as a base station (BS) role, a gateway (GW) role, a relay (RL) role, or a customer station (STA) role. The nodes can be a base station node (BSN), a relay node (RLN), or a customer premises equipment (CPE) node. One node can be a first-tier hub of the cascaded star topology and another node can be a second-tier hub of the cascaded star topology.

A method according to a first aspect is a method performed by a relay node that establishes a radio backhaul link, with an adjacent relay node, relaying communication between a user equipment and a donor base station. The method includes measuring a parameter related to communication quality of a data packet by a BAP entity that transmits or receives the data packet via the radio backhaul link, and reporting a result of the measuring to the donor base station by an upper entity locating in an upper layer than the BAP entity.

A communication system has a plurality of LEO satellites in a specified orbital plane and a plurality of trunk satellites in a medium earth orbit. Each LEO satellite acquires satellite-specific data and includes inter-satellite links with adjacent LEO satellites. Each trunk satellite includes inter-satellite links adjacent trunk satellites. One of the trunk satellites operates as a relay trunk satellite in position to maintain optical communication with a specified ground station on the Earth. Each LEO satellite has a limited field of regard to establish optical communication with any trunk satellite. A relay LEO satellite is configured to establish optical communication with a corresponding trunk satellite. The plurality of LEO satellites relay aggregated data to the relay LEO satellite. The relay LEO satellite relays the aggregated data to the corresponding trunk satellite. The relay trunk satellite relays the received aggregated data to the corresponding ground station.