A radio access network node of a telecommunication network and method, the node including: a system of radiating antennas radiating radio signals through a geographic territory, and a processor configured to execute computer-readable instructions to: obtain or generate a topographic map of the geographic territory; based on the topographic map, calculate a coverage map of radio coverage of the geographic territory by the radiated radio signals; based on the coverage map, shrink the topographic map to obtain a reduced-size topographic map; based on the calculated coverage map, create a first data structure including plural first data structure records, one for each point of the calculated coverage map, each first data structure records providing a description of a service delivery capability of the node in that point, and exploit the first data structure to decide how to serve user equipment located in the territory corresponding to the reduced-size topographic map.

In accordance with particular embodiments, there is disclosed herein a method performed by a wireless device for handover. The method comprises receiving a first handover message from a source network node associated with a source cell. The first handover message comprises an identification of a target cell and access information associated with the target cell. The target cell is different than the source cell and comprises one or more beams. The method also includes identifying at least one beam from among the one or more beams of the target cell. The at least one beam is identified based on the identification of the target cell and the access information from the first handover message. The method further includes accessing the target cell using the identified at least one beam.

To enable a prompt increase in throughput of a terminal apparatus immediately after handover. An apparatus of the present invention includes: an acquisition unit 145 configured to acquire a response message for a handover message from a source base station (base station 200) of handover of a terminal apparatus 300, the response message including information of uplink resources related to measurement for the terminal apparatus 300; and a first communication processing unit 141 configured to transmit the response message for the handover message to the source base station (base station 200).

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 beam switching method, performed by a satellite user equipment (UE), includes: obtaining at least one of a target beam or a target bandwidth part (BWP) corresponding to the satellite UE indicated by a base station; and performing a service beam switching based on at least one of the target beam or the target BWP.

A method and device for selecting a beam used in communication in an environment in which massive-MIMO beamforming is performed, to include a base station including: a communication unit configured to form multiple beams and perform communication with a terminal apparatus; and a control unit configured to transmit, to the terminal apparatus, first identification information of a group that is used in communication with the terminal apparatus among the first identification information allocated to groups each of which includes multiple beams to be formed.

Access, mobility management and regulatory services are supported for satellite access to a Fifth Generation (5G) core network (5GCN). Signaling including data and voice for radio cells supported by a satellite is transported between UEs and a core network via an earth station. When the satellite is transferred to a new earth station, the signaling can be transferred to the new earth station and possibly to a new base station. The UEs may remain with their current radio cells with a regenerative satellite or be assisted to remain with their current radio cells with a transparent satellite. The signaling transfer between the earth stations may occur at a Level 1 or Level 2. A modified handover procedure may be used with a regenerative satellite with split architecture when there is a change of base station.

A wireless transmit/receive unit (WTRU) may receive, from a serving cell based on the measurement report, a conditional reconfiguration message that includes a trigger condition and configuration information for handover to a target cell based on the trigger condition. The conditional reconfiguration message may be stored and the WTRU monitors trigger quantities of the serving cell and the target cell for the trigger condition being met. When the trigger condition is met within a validity period, then the WTRU applies the received configuration information and starts the handover to the target cell.

Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may provide information identifying a first time offset between a first time associated with a measurement performed by the user equipment and a second time associated with a measurement gap or a time value of a serving cell of the user equipment, receive information identifying a second time offset between the second time and a third time, wherein the second time offset is based at least in part on the first time offset, and/or transmit a random access message at the third time based at least in part on the second time offset. A scheduling entity may coordinate a random access procedure associated with the random access message based at least in part on the second time offset. Numerous other aspects are provided.

Certain aspects of the present disclosure provide various techniques for beam recovery. For example, a method for wireless communication by a network entity may include providing configuration information to a user equipment (UE) indicating a sequence of target beams and timing information to try each target beam in the sequence, and attempting to communicate with the UE using one or more of the target beams according to the timing information, in response to a beam failure.