Abstract: In a mobile communication system according to the present invention, a radio base station (eNB) is configured to transmit broadcast information including a parameter to which a frequency bandwidth used in the mobile communication system is set; a mobile station (UE#1) is configured to determine, when a predetermined value is set to the parameter included in the received broadcast information, that a first frequency bandwidth is the frequency bandwidth used in the mobile communication system; and a mobile station (UE#2) is configured to determine, when the predetermined value is set to the parameter included in the received broadcast information, that a second frequency bandwidth different from the first frequency bandwidth is the frequency bandwidth used in the mobile communication system.

Abstract: The present invention relates to a radio communications system which transmits same downlink information to a plurality of cells by using downlink common channels. The radio communications system includes a radio network controller and a base station. The radio communications system is configured to measure delays between the time when the radio network controller transmits the downlink information and the time when the base station transmits the downlink information to each of the plurality of cells; and to control timing for transmitting the downlink information to each of the plurality of cells by the base station in accordance with measured delays.

Abstract: A mobile station according to the present invention includes: a communication unit (14) configured to start a first communication using information included in a MIB, a SIB 1 and handover command in a handover-target cell when a broadcast information reception unit (12) succeeds in receiving the SIB 1, and to perform a second communication using information included in the MIB and the handover command in the handover-target cell when the broadcast information reception unit (12) fails to receive the SIB 1.

Abstract: A radio network controller can set up a connection with a mobile station located in a specific cell under control of the radio network controller. The radio network controller includes a connection setup request transmitter configured to transmit a connection setup request for request to set up the connection to the mobile station located in the specific cell; and a judger configured to judge whether or not to need to acquire information of the mobile station located in the specific cell. The connection setup request transmitter is configured to transmit the connection setup request to the mobile station located in the specific cell, when the judger judges to need to acquire the information of the mobile station.

Abstract: A radio base station transmits user common data provided from a user common data control apparatus connected to a communication network to a plurality of mobile stations by radio. The radio base station includes a frame loss detection unit configured to detect loss of user common data that occurs on a transmission route between the radio base station and the user common data control apparatus, and a timing adjustment unit configured to change transmission timing of the user common data for the mobile station according to the loss of the user common data.

Abstract: When a radio resource allocation channel transmitted from a radio base station (eNB) at a discontinuous reception timing satisfies a specific condition, a mobile station (UE) is configured not to start a continuous reception of a signal transmitted from the radio base station (eNB), but to continue the discontinuous reception of a signal transmitted from the radio base station (eNB), even though the mobile station (UE) is performing the discontinuous reception of a signal transmitted from the radio base station (eNB).

Abstract: A mobile station includes a radio channel condition evaluation unit evaluating a radio channel condition; a radio channel condition averaging unit averaging the evaluated radio channel condition over a predefined time period; a radio channel condition threshold storage unit storing a threshold of the radio channel condition and a message type, the threshold and the message type being specified by a radio access network apparatus; a radio channel condition comparison unit comparing the averaged radio channel condition with the threshold; and a radio channel condition reporting unit transmitting an identifier and the radio channel condition for a cell to the radio access network apparatus, the averaged radio channel condition of the cell being greater than or equal to the threshold.

Abstract: A broadcast information notification method according to the present invention includes: starting to repeatedly transmit, at a network node, a broadcast message irrespective of transmission timing of a paging message, when the network node is instructed to notify a mobile station of the broadcast information; receiving, at the mobile station, a broadcast message reception parameter by using a parameter specified by the paging message transmitted by the network node at a predetermined timing; receiving, at the mobile station, a receivable broadcast message by using the received broadcast message reception parameter; and performing, at the mobile station, processing corresponding to the broadcast information.

Abstract: A notification equipment comprises a transmission data determination unit configured to determine whether transmission data to be transmitted to a terminal equipment is first transmission data or repeated transmission data, an instruction data generator configured to generate identification instruction data indicating that the transmission data is the first transmission data or the repeated transmission data based on a transmission data determination result by the transmission data determination unit, and an instruction data transmitter configured to transmit the identification instruction data to the terminal equipment.

Abstract: A mobile station includes a cell selector unit for performing a cell reselection procedure for a predetermined period after a failure of detection of a radio link with a first radio base station which manages a first cell, a connection re-establishment request signal transmitter unit for transmitting a connection re-establishment request signal to a second radio base station managing a selected second cell, when it is determined that the second cell is a cell using a same radio access scheme as that of the first cell, and a connection recovery procedure starter unit for starting a connection recovery procedure for a mobile exchange station managing the second radio base station, when it is determined that a response signal received from the second base station in response to the connection re-establishment request signal indicates rejection of connection re-establishment.

Abstract: A transmitter (10) is provided with an MAC-PDU generating section (12), which multiplexes an information element and generates an MAC-PDU; and a first data unit transmitting section (13), which transmits the generated MAC-PDU, in an MAC layer. The information element is of an MAC-SDU received from an RLC layer, an MAC control block or padding. The MAC-PDU generating section (12) adds to an MAC-PDU an MAC header including a C/T for identifying the type of the information element to be multiplexed into the MAC-PDU and an LI for indicating the size of the information element.

Abstract: A controlling method and a radio base station apparatus capable of variably determining a Transmission Time Interval (TTI) length in accordance with a communication environment of a mobile terminal is disclosed. The radio base station apparatus includes a receiving section receiving information via an uplink channel; and a scheduler variably determining a Transmission Time Interval (TTI) length for any one of an uplink shared channel and a downlink shared channel or both based on at least any of a moving speed of a mobile terminal, location of the mobile terminal in a cell, a provided throughput value, and a number of retransmissions obtained from the received information. Preferably, the scheduler includes a TTI length allocation table describing relationships between parameter values and the corresponding TTI length, the parameters being used for estimating the location and/or the moving speed of the mobile terminal.

Abstract: A mobile station for establishing a signaling control channel and a shared data channel between a radio access network apparatus and the mobile station to perform communication includes discontinuous reception means configured to perform discontinuous reception of broadcast information using the signaling control channel, shared data channel reception determination means configured to determine whether to receive the shared data channel based on an item of broadcast information and information indicating presence or absence of change of content corresponding to the item of the broadcast information that are transmitted by the signaling control channel, and shared data channel reception means configured to receive the shared data channel according to the determination.

Abstract: A user apparatus for use in a mobile communication system includes a reception unit configured to receive a signal transmitted from a base station and obtain a parameter for determining evaluation criteria on cell reselection; a counting unit configured to count a number of cell reselections; and a measurement unit configured to measure a Doppler frequency indicative of a mobility of the user apparatus. The evaluation criteria on cell reselection are that reception signal strength of a signal transmitted from a target base station has been higher than or equal to reception signal strength of a signal transmitted from a source base station by greater than or equal to a hysteresis threshold for longer than or equal to a time to trigger. It is determined whether the evaluation criteria on cell reselection are modified and used depending on whether both first and second conditions are satisfied.

Abstract: A signal transmission method checks, when detecting an occurrence of a communication request, whether the communication request is a high speed communication (step S302). In the case of the high speed communication, it checks whether the number of current high speed communications (m) plus one is greater than the upper limit (mmax) of the high speed communication (step S312). If greater, it cancels the request as a call loss (S316), and sets to a variable a the ratio (h) of the rate of the high speed communication to that of a low speed communication. If the communication request is the low speed communication, it sets one to the variable a (step S304). It compares n plus a with nmax (step S306), where n is the total number of all the current communications, a is the value associated with the communication request, and nmax is the upper limit of the number of communications acceptable in a bandwidth, all of which are expressed in terms of the number of the low speed communications.

Abstract: A base station performing a radio communication with a user equipment includes a transmission format determining unit configured to determine a transmission format of a downlink data channel not to be associated by a control channel, based on a downlink reception signal quality measured by the user equipment, a notification unit configured to notify, to the user equipment, the transmission format determined by the transmission format determining unit, and a transmitting unit configured to transmit downlink data to the user equipment via the downlink data channel, by using the transmission format determined by the transmission format determining unit.

Abstract: A method for reporting multi-address information comprises a step wherein each of mobile stations (UE) obtains the positional information relating to the mobile stations (UE) and manages information relating to the obtained positional information, a step for reporting multi-address information provided with an electronic signature to each of the mobile stations (UE), a step wherein each of the mobile stations (UE) verifies the multi-address information by use of the electronic signature provided to the received multi-address information, a step wherein each of the mobile stations (UE), when the verifying is successful, compares positional information contained in the multi-address information with the positional information being managed, and a step wherein each of the mobile stations (UE) performs processing in response to the multi-address information on the basis of the result of comparing.

Abstract: In a procedure for a mobile station (UE) to perform handover from a cell under the control of a radio base station (NB) of an UTRAN scheme to a cell under the control of a radio base station (eNB) of an E-UTRA scheme, a switching center (MME) of the E-UTRA scheme receives, from and the radio base station (eNB) of the E-UTRA scheme, a handover request acknowledge message including a transparent container including a security algorithm of an AS used in a communication between the mobile station (UE) and the radio base station (eNB) of the E-UTRA scheme; and the switching center (MME) of the E-UTRA scheme transmits, to a switching center (SGSN) of the UTRA scheme, a NAS PDU including the transparent container, a security algorithm of a NAS and a security processing parameter of the NAS.

Abstract: An acquiring unit (60) of a reception device acquires, from a transmission device, a notification of re-establishment of data in a lower layer. A notifying/instructing unit (70) of the reception device notifies, to the transmission device, a sequence number in a higher layer of data which is desired to be received. An RLC processing unit (40) of the transmission device acquires, from the reception device, a sequence number in a higher layer of data which is desired to be received; and performs the re-establishment from the data having the sequence number.

Abstract: A method for transmitting a notification signal comprises a step in which each of a plurality of mobile stations (UE) compares first security information which each of the mobile stations manages with second security information included in a received first notification signal to thereby verify the validity of the first notification signal and a step in which each of the mobile stations (UE) performs the output corresponding to the first notification signal in the case of successfully verifying the validity of the first notification signal.