A communication control method according to a first aspect is a method used in cellular communication system including a relay node for relaying communication between a base station and user equipment. The communication control method includes the steps of: broadcasting, by the base station managing a cell belonging to a Non-Public Network (NPN), a system information block including an NPN identifier identifying the NPN to the cell; receiving, by the relay node, the system information block from the base station; and determining, by the relay node, whether an access from the relay node to the cell is permitted, based on the system information block.

A wireless communication node sets a downlink target value of a received power of a downlink from an upper node based on a received power of an uplink from a lower node, and transmits, to the upper node, power control information based on the downlink target value.

This application provides for a data transmission method, an apparatus, and a device. The method may be applied to a relay communication system. The method includes a first network device that receives a first data packet. The first data packet is a data packet of a first multimedia broadcast multicast service (MBMS), and the first data packet carries first information. When second information of the first network device matches the first information, the first network device sends the first data packet to a terminal device that accesses the first network device. The second information is preconfigured for the first network device. In this way, the MBMS is transmitted in the relay communication system.

A second base station sends, to a wireless device, an indication of a data radio bearer (DRB) configured for a small data transmission (SDT) procedure of the wireless device. The second base station receives, from a first base station, a request for a context of the wireless device. The second base station sends, to the first base station, in response to the request, a response message indicating not to relocate the context of the wireless device, and the DRB configured for the SDT procedure. The second base station receives, from the first base station, downlink data forwarding information associated with the DRB configured for the SDT procedure. Based on the downlink data forwarding information, the second base station sends, to the first base station, downlink data of the SDT procedure received from a core network node.

The disclosure relates to a communication technique for converging Internet of things (IoT) technology with 5th generation (5G) communication systems designed to support a higher data transfer rate beyond 4th generation (4G) systems, and a system therefor. The disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. A terminal operation method related to each universal subscriber identity module (USIM) when dual connectivity is established for a terminal supporting multi-USIM, and an apparatus therefor are provided.

A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.

A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.

An aspect of the present disclosure is directed to a network node for performing communication in a wireless communication network. The network node is configured to receive a signal transmitted by a user device in the wireless communication network, measure a received power level at which the signal is received by the network node, determine, based on a predefined transmit power level of the network node, based on a predefined transmit power level of the user device and based on the received power level, a threshold power level for a clear channel assessment to be performed by the user device, and trigger transmitting an indication of the threshold power level to the user device. Further aspects of the disclosure pertain to a user device, methods and a computer program product.

An aspect of the present disclosure is directed to a network node for performing communication in a wireless communication network. The network node is configured to receive a signal transmitted by a user device in the wireless communication network, measure a received power level at which the signal is received by the network node, determine, based on a predefined transmit power level of the network node, based on a predefined transmit power level of the user device and based on the received power level, a threshold power level for a clear channel assessment to be performed by the user device, and trigger transmitting an indication of the threshold power level to the user device. Further aspects of the disclosure pertain to a user device, methods and a computer program product.

The present disclosure relates to radio network communication. In one of its aspects, the disclosure presented herein concerns a method for retrieving configuration information from a target Base Station (BS) in an E-UTRA New Radio-Dual Connectivity (EN-DC) wireless communication system. The method is performed by a source en-gNB. According to the method, a request message requesting configuration information from the target BS is transmitted to a first proxy evolved Node B (eNB). The request message comprises identifiers identifying the source en-gNB and the target BS, respectively.