Abstract: One object is to provide a radio base station and a communication control method that can realize appropriate control on a user device even when a function of an upper layer such as MAC scheduler and a function of a radio physical layer are mounted separately. A communication control method according to the present invention is implemented in a radio base station (200) including a remote device (260) and a central aggregation device (210) and that performs radio communication with a user device (300). The communication control method includes transmitting including the central aggregation device (210) transmitting to the remote device (260) paging information that is information used for performing paging on the user device (300), and performing including the remote device (260) setting a downlink physical channel based on the paging information received from the central aggregation device (210) and performing the paging.

Abstract: A user apparatus in a radio communication system including a base station and the user apparatus includes: a receiver unit configured to receive, from the base station, first designation information for designating a resource group including a plurality of resources each including a bandwidth of a predetermined number of resource blocks and second designation information for designating allocation resources in the resource group; and a communication unit configured to perform data communication using the allocation resources designated by the second designation information in the resource group designated by the first designation information.

Abstract: A communication device used as a first communication device in a wireless communication system including the first communication device, a second communication device communicating with the first communication device, and a user equipment communicating with the first communication device, includes an acquisition unit configured to acquire a parameter used for performing a random access procedure from the second communication device; and a control unit configured to transmit, in the case of receiving a random access preamble from the user equipment in a random access channel indicated by the parameter, information indicating that the random access preamble indicated by the parameter is received from the user equipment to the second communication device.

Abstract: The present invention provides a method for allowing user terminal to acquire information about paging physical resource blocks (PRBs), a method of allowing a base station to indicate information about paging PRBs to UE, a method of allowing UE to determine allocation of paging PRBs, a method of allowing a base station to allocate paging PRBs, a base station and UE. The above method of allowing user terminal to acquire information about paging physical resource blocks (PRBs) includes detecting an anchor PRB, reading information carried by the anchor PRB, and acquiring information about the non-anchor paging PRBs associated with the anchor PRB based on the information carried by the anchor PRB. By this method, non-anchor paging PRBs can be specified to the UE.

Abstract: A user apparatus that communicates with a base station apparatus is provided. The user apparatus includes a reception unit configured to receive, from the base station apparatus, an indication for an individual random access preamble, information indicating correspondence to non-contention based random access procedure, and a random access response; a transmission unit configured to transmit the individual random access preamble to the base station apparatus; and a control unit configured to, in response to receiving the random access response to the individual random access preamble, the random access response being transmitted from the base station apparatus, determine whether the random access procedure has been successfully completed based on the information indicating correspondence to the non-contention based random access procedure.

Abstract: A device is disclosed that is used as a first device in a radio communication system including the first device, a second device communicating with the first device, and a user equipment communicating with the first device. The device includes a processor being configured to acquire from the second device, a plurality of parameters used for an initial cell setting, the plurality of parameters including at least one of: information indicating a center frequency, a bandwidth and a duplex mode of a cell, a physical cell ID, information related to a master information block (MIB) for the initial cell setting, information related to a system information block (SIB) for the initial cell setting, and maximum transmission power. Additionally, the first device is a remote radio unit and the second device is a central unit. Further, the first device performs a predetermined layer function. In another aspect, a method is disclosed.

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: Provided is a base station used as a first base station in a radio communication system including the first base station, a second base station communicating with the first base station, and a user equipment communicating with the first base station. The base station includes: an acquiring unit that acquires a plurality of parameters used for an initial cell setting; and a setting unit that performs a cell setting using the acquired plurality of parameters.

Abstract: One object is to provide a radio base station and a communication control method that can realize appropriate control on a user device even when a function of an upper layer such as MAC scheduler and a function of a radio physical layer are mounted separately. A communication control method according to the present invention is implemented in a radio base station (200) including a remote device (260) and a central aggregation device (210) and that performs radio communication with a user device (300). The communication control method includes transmitting including the central aggregation device (210) transmitting to the remote device (260) paging information that is information used for performing paging on the user device (300), and performing including the remote device (260) setting a downlink physical channel based on the paging information received from the central aggregation device (210) and performing the paging.

Abstract: An object is to realize appropriate HARQ retransmission of the downlink signals even when the function of the upper layer such as the MAC scheduler and the function of the radio physical layer are mounted separately. A radio base station (200) includes a central aggregation device (210) and a remote device (220), and performs radio communication with a user device (300). The remote device (220) includes a receiving unit (223) that receives from the user device (300) a reception response signal that notifies whether a downlink signal is successfully received or not; a generating unit (224) that generates, based on the reception response signal, delivery confirmation information necessary for the central aggregation device (210) to perform retransmission control of the downlink signal; and a transmitting unit (225) that transmits to the central aggregation device (210) the delivery confirmation information.

Abstract: A base station is provided that includes an obtainer that obtains a first parameter used for generation of a signal of a physical downlink control format indicator channel, a second parameter used for generation of a signal of a physical downlink HARQ indicator channel, or a third parameter used for generation of a signal of a physical downlink control channel; a generator that generates the signal of the physical downlink control format indicator channel, the signal of the physical downlink HARQ indicator channel, or the signal of the physical downlink control channel using the first parameter, the second parameter, or the third parameter; and a transmitter that transmits the generated signal of the physical downlink control format indicator channel, the generated signal of the physical downlink HARQ indicator channel, or the generated signal of the physical downlink control channel.

Abstract: An interface method between a central-aggregate apparatus and an extension apparatus is provided, which includes: transmitting, by the central-aggregate apparatus, uplink signal indication information for a user equipment and an identifier of the user equipment to the extension apparatus; retaining, by the extension apparatus, the identifier and uplink signal information extracted from the received uplink signal indication information and transmitting an uplink signal indication to the user equipment; receiving an uplink signal transmitted from the user equipment based on one or both of the retained uplink signal information and identifier; extracting data information from the uplink signal, estimating uplink communication quality based on the uplink signal, and transmitting one or both of the extracted data information and the estimated uplink communication quality to the central-aggregate apparatus; and receiving, by the central-aggregate apparatus, one or both of the data information and the uplink communi

Abstract: A user apparatus that communicates with a base station apparatus is provided. The user apparatus includes a reception unit configured to receive, from the base station apparatus, an indication for an individual random access preamble, information indicating correspondence to non-contention based random access procedure, and a random access response; a transmission unit configured to transmit the individual random access preamble to the base station apparatus; and a control unit configured to, in response to receiving the random access response to the individual random access preamble, the random access response being transmitted from the base station apparatus, determine whether the random access procedure has been successfully completed based on the information indicating correspondence to the non-contention based random access procedure.

Abstract: A communication device used as a first communication device in a wireless communication system including the first communication device, a second communication device communicating with the first communication device, and a user equipment communicating with the first communication device, includes an acquisition unit configured to acquire a parameter used for performing a random access procedure from the second communication device; and a control unit configured to transmit, in the case of receiving a random access preamble from the user equipment in a random access channel indicated by the parameter, information indicating that the random access preamble indicated by the parameter is received from the user equipment to the second communication device.

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: A radio base station is disclosed including an extension station and a central aggregate station, wherein the extension station includes a processor that determines whether a resource used when a user equipment transmits an uplink reference signal is allocated, a first receiver that receives the uplink reference signal from the user equipment based on a determination result of processor, wherein the processor calculates measurement information based on the uplink reference signal received by the first receiver, and a transmitter that transmits the measurement information calculated by the processor to the central aggregate station, and the central aggregate station includes a receiver that receives the measurement information from the extension station.

Abstract: There is provided a user apparatus of a radio communication system provided with a base station and the user apparatus, the user apparatus including a determination unit configured to determine a size of a soft buffer to be secured within the user apparatus based on a total soft buffer size corresponding to a UE category of the user apparatus, a modulation scheme configured for a downlink by the base station, and a MIMO-layer number configured for the downlink by the base station; and a receiving unit configured to store data received from the base station in the soft buffer with the size determined by the determination unit, wherein the UE category includes 2 layers, 4 layers, and 8 layers as maximum MIMO-layer numbers to be supported, and the UE category includes 64 QAM and 256 QAM as the modulation schemes to be supported.

Abstract: A communication apparatus for use in a radio communication system, including: a reception unit configured to receive, from another communication apparatus, coded information to which a predetermined identifier is applied, decode the coded information to obtain a predetermined number of sequences that are candidates of a final decoding result, and perform a check by an error detection code using a plurality of identifiers for each of the predetermined number of sequences; and a sequence selection unit configured, if the check by the error detection code succeeds in a plurality of sequences by the reception unit, to select a sequence of the highest likelihood from the plurality of sequences as the final decoding result.

Abstract: To properly perform a random access procedure in communication using beam forming, a user terminal of the present invention is characterized by having a receiving section that receives a DL signal transmitted from a radio base station, a transmitting section that transmits a PRACH using a predetermined random access preamble (PRACH) resource selected based on the DL signal, and a control section that controls retransmission of the PRACH using a different PRACH resource from the predetermined PRACH resource, when reception of a response signal to the PRACH transmission does not succeed.

Abstract: A user apparatus in a radio communication system including a base station and the user apparatus includes: a receiver unit configured to receive, from the base station, first designation information for designating a resource group including a plurality of resources each including a bandwidth of a predetermined number of resource blocks and second designation information for designating allocation resources in the resource group; and a communication unit configured to perform data communication using the allocation resources designated by the second designation information in the resource group designated by the first designation information.