Abstract: The present invention provides a method for configuring a hybrid automatic repeat request (HARQ) mode in a base station, a communication method for use by user terminal supporting communication capabilities of the first type, a base station and user terminal. This user terminal includes a transmission section that transmits information about a capability for supporting HARQ bundling, to a radio base station, and the transmission section transmits bundled HARQ-ACKs to the radio base station based on the capability.

Abstract: An arithmetic encoder is provided for converting an event sequence comprised of a plurality of events to an information sequence comprised of at least one information piece, and includes a core engine for receiving an event of the event sequence, and a probability estimate from a probability estimator, and generating zero or more pieces of the information sequence responsive to the received event and the probability estimate by bounding the ratio of events to information pieces. An arithmetic encoder is provided that is capable of constraining a number of events in at least one event sequence as a function of the number of generated information pieces in at least one information sequence.

Abstract: An object is to provide a mobile station, a mobile communication system, and a network device that can realize more appropriate call origination control per service as intended by an operator. An MMTEL function unit (120) of a UE (100), based on ssac-BarringForMMTEL-Voice, upon determining that call origination of a VoLTE call is possible, transmits Bearer Request to an NAS function unit (170). The NAS function unit (170), in accordance with the Bearer Request, transmits Service Request to an RRC function unit (190). The RRC function unit (190), in accordance with the Service Request, based on ac-BarringForMO-Data or Tbarring, transmits RRC Connection Request to a mobile communication network (200) without determining a possibility of call origination of the VoLTE call.

Abstract: A switch is provided. The switch is connected to a control apparatus for controlling Lawful Interception, and relays packets transmitted and received between a user apparatus and an IMS apparatus in the home network of the user apparatus. The switch includes a determination unit configured to determine whether the user apparatus is a Lawful Interception target or whether the user apparatus is a roaming user; and a transmission unit configured to, in the case where the user apparatus is a Lawful Interception target or in the case where the user apparatus is a roaming user, transmit to a mobile management switch information indicating to the user apparatus that the user apparatus should transmit and receive the packets to and from the IMS apparatus without encryption.

Abstract: Provided are an anchor point control device and an anchor point control method that make it possible to select a more suitable anchor point when dynamically changing an anchor point (route switching point). An ME (300) acquires user information indicating at least either an attribute or a state of UE (100), and selects an anchor point out of an anchor point AL and an anchor point AC based on the acquired user information. In addition, the ME (300) notifies the UE 100 of the selected anchor point.

Abstract: Provided is a technique for achieving simultaneous communication with a plurality of wireless communication systems using different radio access techniques. An aspect of the invention relates to a user equipment that supports simultaneous communication with a first wireless communication system and a second wireless communication system using different radio access techniques. The user equipment includes a transmitting and receiving unit that transmits and receives radio signals to and from a first base station in the first wireless communication system and a second base station in the second wireless communication system and a capability information notification unit that transmits, to the first base station or the second base station, capability information related to the simultaneous communication with the first wireless communication system and the second wireless communication system.

Abstract: The present invention is designed to suitably support transmission of uplink control information even when shortened TTIs are used. According to one aspect of the present invention, a user terminal that communicates using a shortened transmission time interval (TTI), in which the TTI duration is shorter than one ms, has a control section that controls transmission of uplink control information, and a transmission section that transmits the uplink control information in a predetermined shortened TTI, using an uplink control channel format, which is for shortened TTIs and which is compatible with multiple TTI durations.

Abstract: The present invention is designed to control the transmission and reception of signals adequately in future radio communication systems. A user terminal, which communicates by using first subframe for DL communication and second subframe for UL transmission and/or DL transmission that are configured between the first subframe configured in a given periodicity, has a receiving section that receives a first downlink control channel transmitted in the first subframe and a second downlink control channel transmitted in the second subframe, and a control section that controls transmission and reception of signals based on the first downlink control channel and/or the second downlink control channel, and the first downlink control channel and the second downlink control channel schedule at least different signals.

Abstract: A user terminal configured to communicate with a radio base station includes a processor that configures a number of resource blocks used in a format for an uplink control signal; and a transmitter that transmits to the radio base station the uplink control signal using the format comprising the configured number of resource blocks.

Abstract: The present invention is designed to reduce communication overhead in communication in which beamforming is used. A user terminal according to one aspect of the present invention has a transmission section that transmits a beam identification signal for identifying a given beam, a receiving section that receives given information transmitted in the given beam based on the beam identification signal, and a control section that controls transmission of the beam identification signal.

Abstract: The present invention is designed to perform UL transmission using a transmission format suitable for content-based uplink (UL) transmission. A user terminal according to the present invention has a transmission section that transmits UL data without UL grants from a radio base station, and a control section that controls transmission of the UL data according to a transmission format, and the transmission format is comprised of an access channel for transmitting a randomly-selected preamble, a control channel for transmitting control information for the UL data, and a data channel for transmitting the UL data.

Abstract: An image predictive encoding device can efficiently encode an image, while suppressing an increase in prediction information and reducing the prediction error of a target block. In an image predictive encoding device, according to one embodiment, to produce a prediction signal of a partition in a target region, it is decided whether prediction information of a neighbouring region can be used. When prediction information of the neighbouring region can be used, a region width of the partition where the prediction information of the neighbouring region is used to produce the prediction signal is determined. The prediction signal of the target region is produced from a reconstructed signal based on at least one of the region width, the prediction information of the target region, and the prediction information of the neighbouring region. The prediction information, information identifying the region width, and a residual signal are encoded.

Abstract: An image predictive encoding device can efficiently encode an image, while suppressing an increase in prediction information and reducing the prediction error of a target block. In an image predictive encoding device, according to one embodiment, to produce a prediction signal of a partition in a target region, it is decided whether prediction information of a neighbouring region can be used. When prediction information of the neighbouring region can be used, a region width of the partition where the prediction information of the neighbouring region is used to produce the prediction signal is determined. The prediction signal of the target region is produced from a reconstructed signal based on at least one of the region width, the prediction information of the target region, and the prediction information of the neighbouring region. The prediction information, information identifying the region width, and a residual signal are encoded.

Abstract: A slice management system and a slice management method that can dynamically adjust the amount of resources when the amount of resources is insufficient to create a slice. A storing unit of a NFVO stores slice utilization status information. In a BSS/OSS, an allocation determination unit determines to create a new slice or extend an existing slice, and when resources for creation of a new slice or extension of an existing slice are insufficient, a resource change determination unit determines a slice for reduction based on the slice utilization status information. A resource request unit of the NFVO reduces resources of the determined slice.

Abstract: Even if “UE category” is notified of only in an uplink (or a downlink), a radio base station eNB can suitably perform a communication control on a mobile station UE in the downlink (or the uplink) for which “UE category” is not notified of. In the mobile station UE according to the present invention, when the mobile station UE does not support “UE category for Release-12” in the uplink, a transmitting unit 12 does not notify of “UE category for Release-12” corresponding to the uplink, and when the mobile station UE does not support “UE category for Release-12” in the downlink, the transmitting unit 12 does not notify of “UE category for Release-12” corresponding to the downlink.

Abstract: An image predictive encoding device can efficiently encode an image, while suppressing an increase in prediction information and reducing the prediction error of a target block. In an image predictive encoding device, according to one embodiment, to produce a prediction signal of a partition in a target region, it is decided whether prediction information of a neighbouring region can be used. When prediction information of the neighbouring region can be used, a region width of the partition where the prediction information of the neighbouring region is used to produce the prediction signal is determined. The prediction signal of the target region is produced from a reconstructed signal based on at least one of the region width, the prediction information of the target region, and the prediction information of the neighbouring region. The prediction information, information identifying the region width, and a residual signal are encoded.

Abstract: A service allocation determination device and service allocation determination method that can allocate a service to a slice without wasteful use of resources. In a BSS/OSS, a service request receiving unit receives service requirements and information indicating functions for implementing a service. An allocation determination unit, using the service requirements and slice information, determines whether to allocate the service to an existing slice or to a new slice. An allocation request unit makes a request to allocate the service to the slice determined by the allocation determination unit. In this case, because the BSS/OSS 10 determines whether to allocate the service to an existing slice or to a new slice based on the service requirements and the attribute of the existing slice, the service can be allocated to a slice without wasteful use of resources.

Abstract: Provided is a communication system that can sustain a reduction in delay in FFT/IFFT processing by code blocking user data, even in a case where the functions of upper layers such as a MAC scheduler and the function of the radio physical layer are implemented separately. In a radio base station (communication system) including a central aggregation device 210 and a remote device 220, the central aggregation device 210 transmits code blocks in a number necessary for generating an OFDM symbol as a piece of data to the remote device 220, the code blocks being produced by dividing user data into units of encoding processing.

Abstract: There is provided user equipment that selects a resource for transmitting a signal based on a sensing result. The user equipment includes a detection unit that detects, by performing sensing in a time window for sensing, one or more resources capable of transmitting a signal in a time window for resource selection after the time window for sensing; a selection unit that selects a resource for transmitting a signal from the one or more detected resources; and a transmission unit that transmits the signal using the selected resource for transmitting the signal.

Abstract: Provided is a technique that transmits data, which is transmitted without obtaining transmission permission, with low delay and high reliability. An aspect of the invention relates to a transmitter including a resource determination unit that determines whether a first type of resource has been allocated in response to the generation of a transmission event for a predetermined type of information and a transmitting unit that transmits the predetermined type of information to a receiver, using the first type of resource, without obtaining transmission permission, when the first type of resource has been allocated.