[Object] To make it possible to select a cell that is more preferable for a terminal device in an environment in which beamforming is performed. [Solution] There is provided a device including: an acquiring unit configured to acquire received quality information indicating received quality of a reference signal in a terminal device; and a control unit configured to perform cell selection for the terminal device based on the received quality information. When a predetermined condition related to use of weight sets for beamforming by a base station is satisfied, the control unit does not perform the selection based on the received quality information.

A base station establishes a wireless connection in a first portion of a frequency band with a user equipment located in a first geographic area. The first portion is allocated to an operator of the base station in response to a request transmitted to a spectrum access server (SAS). The user equipment is handed over from the first portion to a second portion of the frequency band in response to detecting presence of an incumbent that is allocated a third portion of the frequency band for exclusive use within a second geographic area that overlaps with the first geographic area. The third portion overlaps with the first portion. The second portion is allocated to the operator in response to the request. The first portion and the second portion are separated by a frequency bandwidth that is larger than a threshold determined based on a frequency bandwidth allocated to incumbents.

A base station establishes a wireless connection in a first portion of a frequency band with a user equipment located in a first geographic area. The first portion is allocated to an operator of the base station in response to a request transmitted to a spectrum access server (SAS). The user equipment is handed over from the first portion to a second portion of the frequency band in response to detecting presence of an incumbent that is allocated a third portion of the frequency band for exclusive use within a second geographic area that overlaps with the first geographic area. The third portion overlaps with the first portion. The second portion is allocated to the operator in response to the request. The first portion and the second portion are separated by a frequency bandwidth that is larger than a threshold determined based on a frequency bandwidth allocated to incumbents.

A radio base station that controls radio communication with a radio terminal using a first radio frequency includes: a controller that controls a period in which the radio terminal enables to measure a second radio frequency different from the first radio frequency; a transmitter that transmits a control signal including information regarding the second radio frequency and the period to the radio terminal; and a transfer unit that transfers data addressed to the radio terminal in a case where the data occurs during the period.

A radio base station that controls radio communication with a radio terminal using a first radio frequency includes: a controller that controls a period in which the radio terminal enables to measure a second radio frequency different from the first radio frequency; a transmitter that transmits a control signal including information regarding the second radio frequency and the period to the radio terminal; and a transfer unit that transfers data addressed to the radio terminal in a case where the data occurs during the period.

Aspects of the subject disclosure may include, for example, an aerial base station determining operating frequencies of terrestrial base stations, and taking one or more actions to reduce the potential for interference between the aerial base station and the terrestrial base stations. Actions taken by the aerial base station may include changing frequency, changing altitude, changing location, and changing transmit power. Other embodiments are disclosed.

A communication device, computer program product, and method mitigate interference during mobility management of antenna beam selection. A controller of the communication device determines a first direction to a first downlink from a base station downlink that is beam steered toward the communication device. The controller determines a second direction to a second downlink from the base station that is beam steered toward a second communication device. The controller determines a scan cone of two or more beam entries oriented generally in the first direction and being at least one of angularly narrowed or directed away from the second direction to avoid receiving the second downlink. The controller configures the RF frontend of the communication device with a reduced codebook based on a subset of the two or more beam entries within the scan cone for mobility management of the communication device.

A first optimization server including a first publish-subscribe broker is configured to connect to a first cellular base transceiver station, where the first cellular base transceiver station is configured to communicatively connect to entities, including a first entity, in an RF coverage area of the first cellular base transceiver station. A second optimization server includes a second publish-subscribe broker, where the first publish-subscribe broker and the second publish-subscribe broker are part of a publish-subscribe broker network that is operable to distribute published data packets between entities that are connected to a publish-subscribe broker of the publish-subscribe broker network, where the publish-subscribe broker network is configured to route data packets published by the first entity to a second entity via the first publish-subscribe broker and the second publish-subscribe broker if the second entity has subscribed to receive the data packets published by the first entity.

A first optimization server including a first publish-subscribe broker is configured to connect to a first cellular base transceiver station, where the first cellular base transceiver station is configured to communicatively connect to entities, including a first entity, in an RF coverage area of the first cellular base transceiver station. A second optimization server includes a second publish-subscribe broker, where the first publish-subscribe broker and the second publish-subscribe broker are part of a publish-subscribe broker network that is operable to distribute published data packets between entities that are connected to a publish-subscribe broker of the publish-subscribe broker network, where the publish-subscribe broker network is configured to route data packets published by the first entity to a second entity via the first publish-subscribe broker and the second publish-subscribe broker if the second entity has subscribed to receive the data packets published by the first entity.

Aspects of the present disclosure implement techniques of a new 3D waveform coding scheme that leverages the spatial properties of 5G NR systems. Specifically, in 5G systems, each UE location may be characterized by three parameters: propagation delay (t.sub.p), angle of elevation (θ), and angle of azimuth (φ). Global coding matrix may be generated by linear combination of these three attributes and a unique lattice code may be generated for each UE at different locations from the base station. Thus, considering the coding gain increases with increasing the distance between the codes, aspects of the present disclosure take advantage of geometrical properties of lattice. Particularly, within the 3D waveform coding, if lattice distance between co-beamed UEs is determined to be greater than threshold radius, a conjugate lattice code for the UEs may be applied in accordance with aspects of the present disclosure.