Provided are a data transmission method performed by a base station in a wireless communication system, and an apparatus using the method. The base station transmits a message requesting information for data transmission to a second base station and receives, from the second base station, a response message to the message requesting the information for data transmission, wherein the information for data transmission is to transmit data on a terminal in a light connection state.

The invention relates to an improved handover procedure for a mobile terminal. Under control of the target base station, the mobile terminal is to perform a handoff to a target base station, wherein it is to be configured for communication with the target base station via a target radio cell comprising a downlink carrier and an uplink carrier. The mobile terminal receives a handoff command message for the handoff to the target base station including a handoff execution condition as trigger for executing handoff to the target base station. Then, the mobile terminal determines, based on the received handoff execution condition, whether or not the mobile terminal is to trigger execution of the handoff to the target base station. In case the mobile terminal determines that it is to trigger execution of the handoff to the target base station, the mobile terminal executes the handoff to the target base station.

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.

A mechanism related to a relay node in consideration of movement. The relay device includes: a relay unit that relays a wireless signal between a first device that is a connection destination and one or more subordinate second devices; and a control unit that assigns a network layer IP address, which has a prefix portion that is at least partially common, to each of the one or more second devices.

To solve the problem wherein a terminal cannot perform data communication from a network from the time point of a terminal receiving a handover command (HO command) message from a base station controlling a source cell to the time point of a terminal receiving a handover complete (HO complete) message from a base station controlling a target cell, after the terminal transmits the handover command message to the base station controlling the source cell, the base station controlling the source cell transmits to the base station controlling the target cell whether or not the terminal supports a function of reducing the interruption time of data transfer, the terminal continues to perform data transmission/reception with the base station controlling the source cell, and after the terminal completes a random access procedure with the base station controlling the target cell, the base station controlling the source cell transmits an additional sequence number status transfer message to the base station controlling the target cell.

Systems and methods may use radar channels for virtual reality streaming or output. A method may include sending virtual reality content to a head-mounted device over a radar channel, detecting a signal on the radar channel, propagating channel switch feedback to a virtual reality subsystem using an interface between the virtual reality subsystem and a wireless component. The method may include modifying the virtual reality content based on the channel switch feedback, such as by using the virtual reality subsystem.

A network comprising a first BS for handling a handover comprises at least one storage device for storing instructions and at least one processing circuit coupled to the at least one storage device. The at least one processing circuit is configured to execute the instructions stored in the at least one storage device. The instructions comprise the first BS receiving a Handover Request message from a second BS, wherein the Handover Request message comprises a first plurality of UE capabilities, and the first plurality of UE capabilities indicate a first maximum reception (RX) bandwidth (BW) (RX_BW) for a frequency band; the first BS obtaining a first RX_BW and a first location of the first RX_BW at a first carrier; the first BS generating a handover command configuring the first communication device; and the first BS transmitting a Handover Request Acknowledge message comprising the handover command, to the second BS.

Embodiments herein relate to a method performed by a radio network node (12, 15) for enabling communication for a wireless device (10) in a communication network (1). The communication network (1) comprises partitioned sets of functionalities wherein a first set of functionalities belongs to a first network slice, supporting the wireless device (10), of a first core network node (13), and a second set of functionalities belongs to a second network slice, supporting the wireless device (10), of a second core network node (14) or the first core network node (13), and which first and second sets of functionalities are separated from one another and other sets of functionalities out of a total set of functionalities in the communication network (1). The radio network node obtains paging identities comprising a first paging identity and a second paging identity of the wireless device (10), which first paging identity is associated with the first network slice and the second paging identity is associated with the second network slice. The radio network node (12) receives a paging indication for the wireless device (10) from the second network slice, when the wireless device (10) is connected to the first network slice, which paging indication comprises the second paging identity of the wireless device (10). The radio network node initiates a matching process for matching the second paging identity in the received paging indication to the obtained paging identities for locating context of the wireless device (10), which context is related to the first network slice. The radio network node (12) pages, upon a match of the matching process, the wireless device (10), connected to the first network slice, for communication with the second network slice by using the located context of the wireless device (10).

A communication system is described. The system includes: at least one gateway able to provide broadband connectivity, a set of ground terminals, and a set of aerial platforms, where at least one aerial platform is able to communicate with at least one gateway using radio frequencies, each aerial platform is able to communicate with ground terminals using radio frequencies, and each aerial platform is able to communicate with each other aerial platform using radio frequencies. An automated method for determining a beam direction for communication among UAVs includes: dividing a space around the UAV into multiple sub-regions, and, iteratively: selecting a sub-region from among the multiple sub-regions; pointing a signal toward the sub-region; and determining whether a signal is received from another UAV, until all sub-regions from among the multiple sub-regions have been selected.

In network sharing deployments, a policy control rules server ignores the used radio access network, RAN, and cannot apply RAN-related policies. This specification provides for a system and method for notifying the policy control rules server of a shared RAN used to connect a UE with a serving core network. This method comprises: receiving, at a network node of a serving core network, a request for establishment or modification of a network connection between the UE and the serving core network through a shared RAN; transmitting, from the network node towards the policy control rules server, a serving core network identifier, a RAN identifier and, optionally, a RAN sharing indicator; determining at the policy control rules server that policies related to the RAN identifier exist; transmitting, from the policy control rules server towards a network device, an event trigger subscribing to notifications of a RAN change; and monitoring, at the network device, whether the RAN identifier changes to notify the policy control rules server of a new RAN identifier.