Abstract: A data transmission system is disclosed for multicasting user common data from one or more radio base stations to one or more mobile stations. The radio base station is configured to transmit user common data using a shared data channel, transmit associated control information using an associated control channel, and transmit broadcast information using a broadcast channel. The mobile station is configured to receive the shared data channel, the associated control channel and the broadcast channel. The mobile station is further configured to analyze the broadcast information and the associated control information. The broadcast information includes information indicating transmission timing of the associated control channel. The associated control information includes information of a radio parameter of the shared data channel and includes distribution information indicating multicasting time of the user common data.

Abstract: A mobile station, a radio access network apparatus and a mobile communication system that can decrease signal amount of each message to decrease connection delay are provided. The mobile station is provided with storing means configured to store a conversion table between a combination of a plurality of parameters defined beforehand and an identifier representing the combination of the plurality of parameters; uplink transmission signal generation means configured to generate an uplink transmission signal including the identifier when performing uplink transmission; transmission means configured to transmit the uplink transmission signal to the radio access network apparatus; reception means configured to receive a downlink transmission signal transmitted by the radio access network apparatus; and parameter setting means configured to detect the identifier from the received downlink transmission signal, read and set a parameter based on the identifier.

Abstract: A radio access network device used in a mobile communication system is disclosed. The radio access network device includes a first cell identifier selection unit configured to select an identifier used as a first cell identifier; a second cell identifier selection unit configured to select identifiers used as second cell identifiers; and a neighboring cell information generating unit configured to generate neighboring cell information including the first cell identifier and the second cell identifiers.

Abstract: A downlink packet scheduling method is disclosed for a shared channel or a common channel in a mobile communication system between a base station and a mobile station, the method including a step in which the base station determines whether there is a waiting packet to be transmitted to the mobile station other than a current transmission packet; a step in which when it is determined that there is no waiting packet to be transmitted, the base station sets a stop period “t” in which packet transmission is temporarily stopped after the current packet transmission; a step in which the base station transmits information indicating the stop period “t” through a schedule information channel transmitting schedule information of downlink packets; and a step in which the base station stops the packet transmission to the mobile station during the stop period “t” after the current packet transmission.

Abstract: A retransmission control method according to the present invention includes; transmitting, at a transmitter side apparatus 10, a new data indicator configured of multiple bits and updated when a new packet is transmitted, through a physical control channel associated with the physical data channel; and transmitting, at the receiver side apparatus 30, the transmission acknowledgment information, without depending on a decoding result of the packet received through the physical data channel, when the new data indicator received through the physical control channel is different from a new data indicator which has been expected to be received next at the receiver side apparatus.

Abstract: A radio access network apparatus includes: a receiver unit 211 configured to obtain, from a mobile station, radio quality data that indicates a radio quality of a communication link between the mobile station and a base station; a command generating unit 261a configured to generate a measurement command for instructing the mobile station to initiate a measurement of a communication status of a neighbour cell of the mobile station, when the radio quality data satisfies a predetermined condition; and a transmitter unit 281 configured to transmit the measurement command to the mobile station.

Abstract: The present invention relates to a data transfer method which transfers user data of a mobile station, which is stored in a buffer of the handover source base station, from a handover source base station to a handover target base station, when the mobile station performs a handover. The data transfer method according to the present invention includes: determining, at the handover source base station, a transfer order of the user data; and transferring, at the handover source base station, the user data to the handover target base station based on the transfer order.

Abstract: A disclosed mobile station includes a storage unit configured to establish a correspondence between an identifier for a downlink Layer-1 control channel associated with a downlink data channel and a physical channel parameter for an uplink Layer-1 control channel and to store the identifier and the physical channel parameter; and a unit configured to determine the physical channel parameter based on the identifier and generate the uplink Layer-1 control channel. A disclosed base station includes a storage unit; a unit configured to measure reception quality based on a signal transmitted from the mobile station, select the physical channel parameter and generate the downlink Layer-1 control channel corresponding to the physical channel parameter; and a transmitting unit configured to transmit control information on the generated downlink Layer-1 control channel.

Abstract: A path control apparatus includes a sequence number assignment unit assigning successive sequence numbers to respective user data packets transmitted from an upper layer; and a transmission unit transmitting the user data packets with the assigned sequence numbers to a handover source base station or a handover target base station. A base station includes a sequence correction unit sorting at least one of a user data packet transmitted from a path control apparatus and a user data packet transferred from a handover source base station in a correct order in accordance with sequence numbers successively assigned to respective user data packets; and a transfer unit transferring one or more user data packets of the user data packets having the assigned sequence numbers, wherein the handover source base station has not transmitted the one or more user data packets or waits for transmission acknowledgement for the one or more user data packets.

Abstract: A mobile communication technique capable of efficient measurement of adjacent cells and implementation of handover process, while reducing the measurement workload on a mobile station, is provided. The mobile station measure a first carrier frequency supported by a first adjacent cell based on the carrier information received from a base station that covers the cell in which the mobile station is currently located. If the propagation condition of the first carrier frequency satisfies a predetermined condition, the mobile station measure a second and a subsequent carrier frequencies supported by the first adjacent cell. If the propagation condition of the first carrier frequency does not satisfy the predetermined condition, the mobile station terminates the measurement for the first adjacent cell, and moves to measurement of carrier frequencies of a second adjacent cell.

Abstract: A base station includes data storing unit configured to store data addressed to a mobile station transmitted from a transfer route control apparatus, and data transfer unit configured to transfer the data addressed to the mobile station to a handover destination base station according to a request of the data addressed to the mobile station from the handover destination base station, wherein, when the base station receives a handover confirm complete report for reporting handover completion from the handover destination base station, the data storing unit ends storing the data addressed to the mobile station, so that the object is achieved.

Abstract: A transmission power control method for controlling transmission power of an enhanced dedicated physical data channel for transmitting uplink user data, includes: storing, at a mobile station, a reference transmission format including a transmission data block size which is used in the enhanced dedicated physical data channel, and a gain factor which is a transmission power ratio between the enhanced dedicated physical data channel and a dedicated physical control channel or which is a transmission wave amplitude ratio between the enhanced dedicated physical data channel and the dedicated physical control channel, calculating, at the mobile station, a gain factor of a normal transmission format based on the transmission data block size and the gain factor of the reference transmission format and the transmission data block size of the normal transmission format, and controlling, at the mobile station, a transmission power of enhanced dedicated physical data channel based on the gain factor of the reference tr

Abstract: A security processing apparatus performs security processing in a MAC layer in a mobile communication system. The apparatus includes a mask generation unit generating a mask by using a security sequence number and a processing unit computing a logical operation on the mask and security target data to generate encrypted data. The security sequence number comprises a hyper frame number and a system frame number. The apparatus performs the security processing by using a transport block (TB) as one unit. The transport block is used as data transmission unit from a MAC layer to a physical layer per the unit time (TTI). Since HFN and SFN are used as the security sequence number, the security sequence number can be used uniformly over all RLC modes, and the out-of-synchronization of HFN can be avoided.

Abstract: A mobile station includes: means that performs discontinuous reception only for a signaling control channel, means that determines presence or absence of traffic data addressed to the own mobile station, and means that, when it is determined that there is traffic data addressed to the own mobile station, receives corresponding shared data channel. A radio access network apparatus includes: means that determines a discontinuous reception state, means that determines a discontinuous reception channel, means that reports the determined discontinuous reception channel to the mobile station, and means that, when transmission data arises, transmits a control signal using the determined discontinuous reception channel and that transmits traffic data using a corresponding shared data channel.

Abstract: A radio physical channel is available to multiple logical channels commonly, and multiple radio physical control channels are provided concomitantly with the radio physical channel and include a commonly usable common control channel. A channel transmission apparatus includes a logical channel type determination unit determining a type of a logical channel, and a channel transmission unit transmitting an identifier of the UE in the radio physical control channel depending on the type of the logical channel. A scheme of identifying the UE in the radio physical control channel is modified depending on the type of the logical channel.

Abstract: In multiple communication networks operated by different carriers, when a roaming mobile station performs communication with a roaming communication network PLMN, the communication network was able to recognize only the radio capability reported by the mobile station. When the communication network and mobile station differ in radio capability they support, problems arise in that the roaming mobile station sometimes cannot establish a user data channel and its success rate can reduce, and sometimes can operate in an unintended manner. The mobile station has a PLMN decision internal list (30) and radio capability internal list (31). A to-be-connected network decision section (12) outputs detailed information on a to-be-connected communication network PLMN, and decides the to-be-connected communication network PLMN.

Abstract: A radio communication control system controlling a transmission power of a shared control channel for transmitting a control signal to a plurality of mobile stations. The system includes a transmission power lower limit value setting section configured to set a lower limit value of the transmission power of the shared control channel, and to set the transmission power of the shared control channel at the lower limit value when the transmission power of the shared control channel is lower than the lower limit value.

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 radio controller of a mobile communications system performing broadcasting or multicasting that transmits the same information to multiple cells is disclosed. The radio controller includes a control information comparison part configured to compare the control information of a first one of the cells and the control information of a second one of the cells adjacent to the first one of the cells; and a control information creation part configured to create adjacent cell control information corresponding to the second one of the cells. The control information creation part determines part of the control information of the second one of the cells different from the control information of the first one of the cells as the adjacent cell control information.

Abstract: A mobile station includes an identifier selection unit selecting one identifier among identifiers supplied in advance when the mobile station initiates communications and a connection request signal generation unit generating a connection request signal including the identifier. A radio access network apparatus includes a response signal generation unit, in response to the connection request from the mobile station, generating a response signal including an identifier assigned by a radio access network system and information indicative of an uplink radio resource assigned for the mobile station and a transmission unit transmitting the response signal to the mobile station transmitting the connection request.