Abstract: A satellite communication system that combines the benefits of Geosynchronous Equatorial Orbit (GEO) and Non-geostationary (NGSO) satellite systems into a GEO-NGSO hybrid satellite system. The hybrid system allows for various uses, such as, a NGSO-GEO-NGSO handoff, a GEO-NGSO-GEO handoff, and/or a multi-transport operation utilizing both the GEO and NGSO satellites. Based on the path delay differences of the GEO and NGSO satellites, the system may create a data buffer to ensure no data loss.

Abstract: There is provided mechanisms for beam selection. A method is performed by a first radio transceiver device. The method comprises obtaining link quality estimates of a radio signal conveyed to the first radio transceiver device from a second radio transceiver device by means of at least a first beam taken from a first beam set and a second beam. The second beam is wider than the first beam. The method comprises selecting which one of the first beam and the second beam to use for continued communications of radio signals with the second radio transceiver device in accordance with a comparison between the link quality estimates of the first beam and compensated link quality estimates of the second beam.

Abstract: A power control method includes obtaining, by a first terminal, parameter information required for power control, where the parameter information includes at least one of a first parameter, a second parameter, and a third parameter, and determining, by the first terminal based on the parameter information, uplink transmit power used when uplink transmission is performed on a target beam or a target beam pair; where the first parameter includes a beam reception gain of a network device and/or a beam sending gain of the first terminal, where the second parameter is used to indicate interference caused by a second terminal to the first terminal on the target beam, and where the third parameter includes beam-specific target power and/or terminal-specific target power.

Abstract: Technologies and techniques for monitoring the reliability of an electronic system having one or more electronic components. A transmission quality of signals transmitted to or from the electronic system over a wired electrical signal transmission path are measured at different measurement times and according to a predetermined transmission quality measure. For each of the measurement times, the associated measured transmission quality is compared with a respective associated transmission quality reference value previously determined according to the transmission quality measure. A value of a reliability indicator associated with the respective measurement time is determined in dependence on the result of the associated comparison.

Abstract: A system and method for beam switching by a User Terminal (UT). The method includes initiating a beam switch between an old beam and a new beam when the UT is disposed in an overlap area of the old beam and the new beam; duplicating over the new beam, at a Network Access Point (NAP), user traffic to the UT; and assigning a Time Division Multiplex Access (TDMA) allocation for the UT on the new beam, prior to an arrival of the UT on the new beam, where the user traffic traversing a satellite network remains uninterrupted during the beam switch and the NAP redirects user traffic for the UT via the old beam to the new beam.

Abstract: A system uses signals received from actual user equipment (UE) to build in real time a reception pattern for base stations in a cellular communication system. Each UE is assigned a unique tone to broadcast so that a controller can analyze radio coverage by analyzing which base stations received signals from each UE in a coverage area. Cellular base stations necessarily have overlapping coverage and are assigned unique channel access values to avoid repeating values from overlapping cell sites. As overlaps change in real time, in response to live events, traffic jams, site outages, and new sites, signals received from UEs in the coverage area provide a real time view of system coverage. This allows better allocation of channel access values than prior art historical performance indicators using base station and controller call errors.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, from a set of one or more neighbor cells, a set of one or more candidate cells for an inter-cell mobility operation; determine, from the set of one or more candidate cells, a set of one or more selected cells for the inter-cell mobility operation; add the set of one or more selected cells to a cell group of the UE; and transmit, to a base station, at least one of: the set of one or more candidate cells, or the set of one or more selected cells. Numerous other aspects are provided.

Abstract: A system, method, and device to enable communication between a first and second satellite station and a controller of a mobile platform. The controller includes a processor, a first modem facilitating communication with the first satellite station via a first frequency over a first communication link, and a map of the one or more networks of satellite stations including the second satellite station. The controller utilizes the map of the one or more networks of satellite stations to determine the second satellite station for communicating with the controller. A second modem is coupled to the controller and facilitates communication with the second satellite station via a second frequency over a second communication link, wherein the controller is configured to calculate a time to handoff communication with the mobile communicator from the first communication link to the second communication link.

Abstract: Wireless infrastructure upgrading may be provided. An Access Point (AP) may be caused to decline new association requests received from client devices not associated with the AP. Next, the AP may be caused to instruct client devices associated with the AP that detect a signal level from the AP to be below their roaming margin to roam away from the AP. Then the power of the signal level from the AP may be decreased by a predetermined amount. Causing the AP to instruct client devices associated with the AP that detect the signal level from the AP to be below their roaming margin to roam away from the AP and decreasing the power of the signal level from the AP may be repeated until the power of the signal level from the AP is at a predetermined level.

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently allocating resources for multicast feedback from one or more user equipment (UEs) and efficiently retransmitting information in transport blocks to the one or more UEs. If a UE fails to decode one or more transport blocks of a set of transport blocks from a base station, the UE may report feedback, such as a negative acknowledgment (NACK), to the base station. The base station may receive the feedback from the UE and potentially from other UEs that failed to decode one or more transport blocks of the set of transport blocks, and the base station may multicast one or more outer-coded transport blocks to the UEs. Each of the outer-coded transport blocks may include a different combination (for example, a linear combination) of transport blocks of the set of transport blocks.

Abstract: Embodiments are directed towards facilitating intelligent mobility including session and handover management within communications networks. Handovers for user devices in a network are predicted, current and predicted status data of the network are obtained, and a tradeoff between a cost for pre-allocation of resources prior to predicted handovers and a gain in quality of service is analyzed based on the current and predicted status data to cause resource pre-allocation in the network.

Abstract: A method for balancing sensors within a sensor system, the method including receiving, at a gateway, data from a plurality of sensors, each of the plurality of sensors being connected to one of a plurality of sensor modules or the gateway; determining, at the gateway, that a signal strength from a first sensor falls below a threshold, the first sensor being one of the plurality of sensors; and based on the determining, allocating the first sensor to connect to a different one of the plurality of sensor modules, or to the gateway if connected to one of the plurality of sensor modules.

Abstract: Methods, systems, and devices for wireless communications are described. A first device, which may be a user equipment (UE), may perform a measurement on a wideband channel in a millimeter wave (mmW) frequency band. The wideband channel may include a set of subbands that span the wideband channel. Based on the measurement, the first device may determine a set of power control parameters for the wideband channel. The first device may determine to transmit a signal using a subband of the set of subbands and may modify one or more power control parameters of the set of power control parameters based on a power offset for the subband. The first device may transmit an indication of the modified one or more power control parameters to a second device. The first device may transmit the signal to the second device based on the modified one or more power control parameters.

Abstract: Embodiments of the present invention disclose a wireless network access control method, device, and computer readable medium. The method includes: receiving via a mobile network an access request sent by a user device for requesting Internet access by using a wireless network of a wireless access device after a sharing status of the wireless network is set to be enabled by a setting device; and performing control processing to allow the user device to access the Internet by using the wireless network, such that the wireless access device processes Internet data related to the user device via the wireless network after the user device accesses the Internet by using the wireless network.

Abstract: One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

Abstract: A process that includes establishing, with a first client computing device, a first peer-to-peer connection with a second client computing device. The process further includes determining, with the first client computing device, that a first media stream provided by the first client computing device satisfies at least one selective forwarding unit streaming condition, and providing, with the first client computing device and in response to the first media stream satisfying the at least one selective forwarding unit streaming condition, the first media stream to the second client computing device via a selective forwarding unit.

Abstract: Devices, systems, and non-transitory computer-readable storage media for updating wireless device credentials, the wireless device comprising: a user interface, memory configured to store one or more credentials for enabling the wireless device to obtain one or more services over a wireless access network, and one or more processors configured to execute one or more machine-executable instructions that, when executed by the one or more processors, cause the one or more processors to obtain an indication of a user request to replace a particular credential with a target credential, detect a network-provisioning state change, determine that the particular credential does not match the target credential, initiate a programming session with a network element over a wireless access network, obtain an updated credential from the network element, and assist in storing the updated credential in memory.

Abstract: An electronic device and an antenna switching method of an electronic device are provided. A wireless signal is transmitted or received through a first antenna module among a plurality of antenna modules. A temperature of the first antenna module is measured through a first temperature sensor contained in the first antenna module among a plurality of temperature sensors. A second antenna module among the plurality of antenna modules is switched to based on the measured temperature of the first antenna module exceeding a predetermined value. Each temperature sensor is contained in each of the plurality of antenna modules. The wireless signal is transmitted or received through the second antenna module.

Abstract: In a wireless access node, Packet Data Convergence Protocol (PDCP) circuitry identifies a noise metric for the wireless access node. The PDCP circuitry receives Downlink (DL) user data for User Equipment (UE). The PDCP circuitry allocates a first portion of the DL data and a second portion of the DL data based on the noise metric. The PDCP circuitry transfers the first portion of the DL data over first Radio Link Control (RLC) circuitry to first MAC circuitry. The PDCP circuitry transfers the second portion of the DL data over second RLC circuitry to second MAC circuitry. The first MAC circuitry schedules wireless delivery of the first portion of the DL data and transfers the first portion of the DL data to the UE over first Physical Layer (PHY) circuitry. The second MAC circuitry schedules wireless delivery of the second portion of the DL data and transfers the second portion of the DL data to the UE over second PHY circuitry.

Abstract: In a re-allocation process of a first user plane function network element to a second user plane function network element, a session management function network element sends a respective session modification request to each anchor user plane function network element of a plurality of anchor user plane function network elements, where each session modification request includes information about the second user plane function network element; and indicates to only a first anchor user plane function network element in the plurality of anchor user plane function network elements to send an end marker; or sends the end marker to only the first anchor user plane function network element.

Abstract: A user equipment (UE) uses conditional reconfiguration during positioning to improve the positioning performance. The UE receives conditional reconfiguration information from a serving base station, which includes a list one or more candidate target base stations and their associated resources for handover. During a positioning session, the UE receives assistance data and determines a target base station for handover based on the list of candidate target base stations and the assistance data. The UE, for example, may select a candidate target base station for handover during the positioning session to minimize the number of measurements gaps that are required for positioning measurements, or to increase bandwidth or minimize self-interference. Where timing advance measurements are requested, the UE may select a candidate target base station based on sub-carrier spacing to improve measurement resolution.

Abstract: A wireless system is shared amongst a hierarchal tier of entities. A communication management resource receives notification that a second-tier priority entity has been allocated use of a second wireless spectrum as a replacement to first wireless spectrum. In one embodiment, the first wireless spectrum is revoked from the second-tier priority entity based on use of the first wireless spectrum by a first-tier priority entity (such as incumbent entity). The communication management resource controls a wireless transmit power level of a third-tier priority entity in the hierarchy to provide protected use of the second wireless spectrum by the second-tier priority entity. According to one configuration, the communication management resource controls a power level of wireless communications transmitted by a wireless base station operated by the third-tier priority entity.

Abstract: There is provided a method at a first network node, comprising: receiving, from a second network node, a message comprising a requested quality of service (QoS) profile and one or more alternative QoS profiles, wherein the QoS profiles are associated with a communication with a user equipment; determining that the requested QoS profile cannot be provided by the first network node for a communication between the first network node and the user equipment; determining that at least one of the one or more alternative QoS profiles can be provided by the first network node for a communication between the first network node and the user equipment; transmitting, to the second network node, an indication that an alternative QoS profile can be provided by the first network node; and, transmitting, to the second network node, an indication for configuring the user equipment based on the requested QoS profile.

Abstract: A network node and method performed thereby, for enabling determination, by a prediction function network node, of a change in QoS of a communication session of a UE. The method includes obtaining information related to the UE communication session, the information including an ID of the UE and an ID of the communication session. The method further comprises determining the target serving cell of the UE and providing the obtained information and an ID of the determined target serving cell to the prediction function network node, thereby enabling the prediction function network node to determine new QoS of the UE communication session when being served by the target serving cell. A prediction function network node and a method performed thereby, and a user equipment and a method performed thereby are also disclosed.

Abstract: Embodiments enable seamless Wi-Fi roaming by providing a user with a single username that is associated with a set of resources in the seamless network that includes different Wi-Fi networks (e.g., Wi-Fi networks with different domain names). As a user travels from a first access point in a first Wi-Fi network to a second access point in a second Wi-Fi network within the seamless network, network elements in the seamless network may recognize the user's single username as an already established session (e.g., with the first access point) and direct traffic accordingly to the second access point. Embodiments also satisfy business requirements by updating accounting data accordingly by indicating that the user accessed the seamless network from the first Wi-Fi network. Embodiments allow a user roaming on the seamless network to experience the policies and network requirements associated with the Wi-Fi domain of the second access point.

Abstract: A method and system to control anchor carrier configuration for dual-connectivity service of a user equipment device (UE), the dual-connectivity service including the UE being served concurrently by a master node (MN) over a first connection and by a secondary node (SN) over a second connection. An example method includes determining, when the UE has the first connection with the MN, that the UE is within threshold poor coverage of the MN. And the method includes selecting as the anchor carrier one of multiple carriers on which the MN provides service. Further, the method includes, based at least on determining that the UE is within the threshold poor coverage of the MN, basing the carrier selection on a transmission mode that the MN supports using on the selected carrier. And the method includes causing the selected carrier to be the anchor carrier for the dual-connectivity service of the UE.

Abstract: A transfer management system for efficiently operating an enterprise wireless communication network (EN) at a campus location enables the EN to control congestion, selectively and smoothly admit UEs, and manage UE exits from the EN. An MNO Network (MN) footprint learning system learns the different MN footprints on the campus, relative to the BS/APs deployed by the individual enterprise, which defines a footprint of wireless coverage for each MNO that has wireless coverage. The MN footprint provides useful information that enables successfully transitioning a UE between an EN and an MNO, which provides the EN with the ability to utilize other networks to offload one or more UEs to manage congestion, delay or deny admission of UEs, and proactively exit UEs to manage congestion or for other reasons.

Abstract: An information handling system may include a processor; a memory device; a wireless network interface device to communicatively couple the information handling system to a communication network; a wireless network connection module to determine whether the information handling system is communicatively coupled to one of a Wi-Fi communication network, a public long-term evolution (LTE) communication network, and a private LTE communication network; a velocity determination module to determine a velocity of the information handling system; and a network prioritization module to communicatively couple and consign the information handling system to a second communication network for data communication prioritization for efficient a hand-off process operation corresponding to, at least, the velocity of the information handling system.

Abstract: Apparatuses, methods, and systems are disclosed for consecutive data packet feedback. One method includes receiving a first set of consecutive data packets. The method includes transmitting feedback corresponding to the first set of consecutive data packets, wherein the feedback comprises: an error indication in response each data packet in the first set of consecutive data packets failing to be received correctly; a non-error indication in response to at least one data packet in the first set of consecutive data packets being received correctly; a counter value that indicates a consecutive number of data packet failures; or some combination thereof.

Abstract: A method, performed by a first base station, of sharing a frequency resource with a second base station in a wireless communication system is provided.

Abstract: Provided are a method and apparatus for processing Integrated Access and Backhaul (IAB) node information in an IAB network, including a second IAB node receives notification information transmitted by a first IAB node, where the notification information includes at least one of: notification information for notifying a connection handover event and/or a connection reestablishment event, and instruction information for instructing to perform Packet Data Convergence Protocol (PDCP) status reporting.

Abstract: A method for controlling a beam in a cell, includes obtaining traffic distribution data of a plurality of beam areas included in the cell, obtaining a total number of a plurality of beams for a beam area among the plurality of the beam areas, based on the obtained traffic distribution data, and obtaining a beam width of one among the plurality of beams for the beam area, based on the obtained total number of the plurality of beams. The method further includes obtaining, from a candidate beam set, candidate beams for the beam area, based on the obtained total number of the plurality of beams and the obtained beam width of the one among the plurality of beams, and obtaining, from the obtained candidate beams, multiple beams for the beam area, based on a distance between the obtained candidate beams and the beam area.

Abstract: In order to perform a RACH-less handover from a source base station to a target base station, a UE device generates a request that the target base station is to send a Media Access Control (MAC) message to the UE device. The request can be sent with a Radio Resource Control (RRC) Connection Reconfiguration Complete message. Alternatively, an RRC message sent from a UE device functions as an implicit request that the target base station is to send a MAC message to the UE device. The request can also be configured to specify a particular MAC Control Element that the target base station should send. The target base station transmits the requested MAC message, along with TA information, if required. The UE device determines when the handover has been completed, based at least partially on when the requested MAC message is received from the target base station.

Abstract: A system uses signals received from actual user equipment (UE) to build in real time a reception pattern for base stations in a cellular communication system. Each UE is assigned a unique tone to broadcast so that a controller can analyze radio coverage by analyzing which base stations received signals from each UE in a coverage area. Cellular base stations necessarily have overlapping coverage and are assigned unique channel access values to avoid repeating values from overlapping cell sites. As overlaps change in real time, in response to live events, traffic jams, site outages, and new sites, signals received from UEs in the coverage area provide a real time view of system coverage. This allows better allocation of channel access values than prior art historical performance indicators using base station and controller call errors.

Abstract: A method and apparatus for preventing loss of uplink data in wireless communication system is provided. A central unit (CU) of an integrated access and backhaul (IAB)-donor receives, from a wireless device, uplink data through a source IAB-node. The CU of the IAB-donor receives, from the source IAB-node, a message which informs that uplink packets among the uplink data are remained on the source IAB-node, wherein the message is related to handover procedures of the wireless device from the source IAB-node to a target IAB-node. The CU of the IAB-donor proceeds the handover procedures, after receiving the uplink packets.

Abstract: A system and method for beam switching by a User Terminal (UT). The method includes initiating a beam switch between an old beam and a new beam when the UT is disposed in an overlap area of the old beam and the new beam; duplicating over the new beam, at a Network Access Point (NAP), user traffic to the UT; and assigning a Time Division Multiplex Access (TDMA) allocation for the UT on the new beam, prior to an arrival of the UT on the new beam, where the user traffic traversing a satellite network remains uninterrupted during the beam switch and the NAP redirects user traffic for the UT via the old beam to the new beam.

Abstract: Various implementations described herein are directed to technologies for providing steering for devices of a Wi-Fi network. A steering operation to hand off a client from a first device of the Wi-Fi network to a qualified second device of the Wi-Fi network is initiated based on a performance factor. The steering operation from the first device to the second device is performed in a manner that avoids packet loss.

Abstract: Apparatuses, methods, and systems are disclosed for selecting a base unit in response to a handover condition being triggered. One method (1000) includes selecting (1002) a base unit of multiple base units for handover in response to at least one base unit of the multiple base units triggering a handover condition. The method (1000) includes transmitting (1004) a random access preamble to the base unit. The method (1000) includes performing (1006) a reestablishment procedure to establish communication with one base unit of the multiple base units in response to determining an inability to access each base unit of the multiple base units that meets the handover condition.

Abstract: Communication network architectures, systems and methods for supporting a network of mobile nodes. As a non-limiting example, various aspects of this disclosure provide communication network architectures, systems, and methods for supporting a dynamically configurable communication network comprising a complex array of both static and moving communication nodes (e.g., the Internet of moving things).

Abstract: A user device UE for a wireless communication with a plurality of wireless network elements includes a plurality of antennas. The plurality of antennas are configured to form a plurality of spatial or directional beams. The user device is configured to provide simultaneously a plurality of independent wireless communication links using the plurality of spatial or directional beams, wherein the user device is configured to provide a first wireless communication link with a first wireless network element using a first spatial or directional beam and to provide a second wireless communication link with a second wireless network element using a second antenna beam.

Abstract: In one embodiment, a networking device receives packets of a traffic flow destined for a mobile system. The networking device sends a first flowlet of the traffic flow towards the mobile system via a first wireless access point. The networking device determines an idle time between the first flowlet and a second flowlet of the traffic flow. The networking device sends, based on the idle time, the second flowlet towards the mobile system via a second wireless access point.

Abstract: An indicator (e.g., “5G+” or “5G”) displayed on a mobile device is based on whether the mobile device is connected in or (if idle) has the potential of connecting in a high channel bandwidth frequency band (e.g., n77 or mmWave). An accurate indication is displayed when the mobile device is connected, or when idle and the aggregated bandwidth is not directly known, such as when anchored to a lower bandwidth cell. When in idle mode, the mobile device can maintain cell identifiers (“fingerprints”) and determine a location estimated to be within a high bandwidth cell, to thereby determine potential high bandwidth operation (e.g., and display 5G+) when connected. When in the idle mode, the mobile device can evaluate neighbor cells including if within a high channel bandwidth cell's coverage to decide whether to select “5G+” or “5G” for display to indicate the potential high bandwidth operation (or not) when connected.

Abstract: Methods, systems, and devices for wireless communication are described. A base station may determine a measurement scheme or uplink mode and then transmit an indication of the scheme or uplink mode to an associated user equipment (UE). The base station may identify a set of hidden nodes for the UE and configure the UE for autonomous or grant-based uplink transmissions accordingly. A UE may initiate a channel clearance scheme by transmitting a first channel clearance signal (e.g., a request-to-send message), which may include a UE identifier before transmitting an uplink message in the unlicensed radio frequency spectrum band. In response, the base station may transmit a second channel clearance signal (e.g., a clear-to-send message). In some cases, the second channel clearance signal may include control information or may be transmitted at a power level that is based on a characteristic of the UE.

Abstract: A high availability aircraft network architecture incorporating smart points of presence (SPoP) is disclosed. In embodiments, the network architecture divides the aircraft into districts, or physical subdivisions. Each district includes one or more mission systems (MS) smart network access point (SNAP) devices for connecting MS components and devices located within its district to the MS network. Similarly, each district includes one or more air vehicle systems (AVS) SNAP devices for connecting AVS components and devices within the district to the AVS network. The AVS network may remain in a star or hub-and-spoke topology, while the MS network may be configured in a ring or mesh topology. Selected MS and AVS SNAP devices may be connected to each other via guarded network bridges to securely interconnect the MS and AVS networks.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a base station may select a profile from a set of profiles indicating a communication procedure and a measurement configuration based on one or more communication parameters associated with the base station and transmit an indication of the profile to a user equipment (UE). The UE may utilize the selected profile to modify the communication procedure for coverage enhancement. For example, if one or more conditions (e.g., signal threshold) of the measurement configuration are met, the UE may modify the communication procedure and communicate with the base station according to the modified communication procedure.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first subscriber identity module (SIM) of a user equipment (UE) may detect that the UE is operating in a high mobility environment. The first SIM of the UE may transmit, to a second SIM operating in an idle mode, an indication that the UE is operating in the high mobility environment and an indication of a first frequency error estimation associated with the first SIM. The second SIM of the UE may operate in a high mobility mode using a second frequency error estimation that is based at least in part on the first frequency error estimation associated with the first SIM. Numerous other aspects are described.

Abstract: A wireless transmit/receive unit (WTRU) is configured to receive a radio resource control (RRC) message. The RRC message may comprise information that indicates an association between each of a plurality of beams and power information. The WTRU is configured to receive a trigger message. The WTRU is configured to select a beam in response to the received trigger message. The WTRU is configured to send a control channel transmission using a power level. The power level may be based on the power information mapped to the selected beam.

Abstract: Disclosed in the present invention are an uplink power control method, a terminal device and a network device. The uplink power control method comprises: determining, according to the power capability of a terminal device, a power control scaling rule for an uplink signal, and/or determining, according to a first instruction message from a network device, the power control scaling rule; and processing the power of the uplink signal according to the scaling rule, and determining, according to the processed power, the transmission power of the uplink signal at each antenna port.

Abstract: Methods, systems, and apparatus can be used to provide handover of on-hold sessions in converged networks. In various example implementations, an on-hold session between a mobile communication device and a fixed packet network-connected peer CPE can be handed over from a fixed packet domain to a cellular domain, and vice versa. In various example implementations, an on-hold session between a mobile communication device and a PSTN-connected peer CPE can be handed over from a fixed packet domain to a cellular domain, and vice versa.

Abstract: A communication controller includes a position-information acquiring unit, a movement-information acquiring unit, a selector, and a determination unit. The position-information acquiring unit acquires position information of each of a plurality of base-station devices. The movement-information acquiring unit acquires movement information of a terminal device. The selector selects, as a handover candidate, at least one base-station device from among the plurality of base-station devices in accordance with the position information and the movement information. The determination unit determines a base-station device that is a handover destination, in accordance with a result of a cell search performed on the at least one base-station device selected by the selector.