Abstract: A reception part receives RLC-PDU from an RLC processing part to extract information to be used for determining whether security is required. This information is sent to a security management part, which determines whether security is required. Data outputted from the reception part is stored into a data buffer via a data management part. The data, which is regarded by the security management part as requiring security, is read by the data management part from the data buffer, then encrypted by a security calculation part, and then stored back into the data buffer again. Concealed or non-concealed data is read from the data buffer and sent to an FP processing part via a transmission part.

Abstract: A mobile station for mobile communication includes a receiver operable to receive data from a base station. The receiver includes a first receiving unit operable to receive identifying information for multicast data from a base station and a second receiving unit operable to receive the data on a shared channel from the base station by the information received.

Abstract: A method of mobile communication at a base station includes transmitting to a mobile station, identifying information for multicast data to be transmitted to the mobile station and transmitting the multicast data on a shared channel to the mobile station, wherein the data is identified by the information.

Abstract: A system for mobile communication includes a base station and a mobile station. The base station includes a first transmitting unit operable to transmit to a mobile station, identifying information for multicast data to be to the mobile station, and a second transmitting unit operable to transmit the data on a shared channel to the mobile station, wherein the data is identified by the information transmitted. The mobile station includes a first receiving unit operable to receive from the base station identifying information for the multicast data, and a second receiving unit operable to receive the data on the shared channel from the base station, by the information received.

Abstract: An encryption/decryption device includes a storage section which stores input data and output data, a first encryption/decryption processing section which performs first encryption and decryption processing, and a second encryption/decryption processing section which performs second encryption and decryption processing. The encryption/decryption device stores decrypted data obtained by causing one of the first and second encryption/decryption processing sections to perform the first or second decryption processing for the input data in the storage section. The encryption/decryption device stores data obtained by causing the other of the first and second encryption/decryption processing sections to perform the first or second encryption processing for the decrypted data in the storage section as the output data. The storage area of the storage section for the decrypted data is configured to be inaccessible from the outside of the encryption/decryption device.

Abstract: A radio communication terminal including first transmission/reception means for transmitting and receiving first communication data which can be communicated by a first communication protocol, and communication data input/output means for inputting and outputting the first communication data, comprising second transmission/reception means for transmitting and receiving second communication data which can be communicated by a second communication protocol different from the first communication protocol, and protocol conversion means for converting between the first communication data and the second communication data and visa versa, in which the communication data input/output means outputs the first communication data which has been received by the second transmission/reception means as the second communication data and has been converted from the second communication data into the first communication data by the protocol conversion means, and the second transmission/reception means transmits the second commu

Abstract: An encryption/decryption device includes an encryption/decryption processing section which performs encryption or decryption processing for divided data of first and second content data in an operation mode of a block cipher method using data in a block other than a block under processing, and an intermediate value storage section which stores a processing result or an input value of the encryption/decryption processing section in content units. After the processing result or the input value of the encryption/decryption processing section for one of the divided data of the second content data has been stored in the intermediate value storage section, the processing result or the input value for the Kth divided data of the first content data is read from the intermediate value storage section, and the encryption/decryption processing section performs the encryption or decryption processing for the (K+1)th divided data of the first content data by using the processing result or the input value.

Abstract: A data-cache apparatus for providing a data-cache function to a radio communications system is disclosed. The data-cache apparatus includes a data distinguishing unit (310) to distinguish an attribute of data requested by a mobile station, a cache memory (340) that temporarily stores data provided to a mobile station, and a data request processing unit (320 and 330) to acquire requested data from the cache memory or an external server based on a result of distinction carried out by the data distinguishing unit. The data request processing unit performs operations of searching for the requested data in the cache memory, and storing the acquired data in the cache memory.

Abstract: The semiconductor device comprises a memory for storing access data of a central processing unit, a security circuit for restricting access to the memory from one of the central processing unit and a debugger having an emulation function of the central processing unit and for accessing the memory as a substitute of the central processing unit, and a debug-enable signal input terminal. When the debug-enable signal is inactive, an access signal from the debugger to the semiconductor device is invalidated, and the security circuit enables the central processing unit to access the memory. When the debug-enable signal is active, the access signal becomes valid, and the security circuit disables access to the memory. After then, when a password for access is input from the debugger, the security circuit enables the debugger to access the memory.

Abstract: Disclosed is a method of controlling flow between a base station controller and a base station in a wireless communication network. The base station controller, base station and a mobile station are provided with the same processing timing that is based upon the minimum receive interval of the mobile station. The base station controller sends and receives a data-transfer request frame and a data-transfer enable frame to and from the base station and performs flow control of data from the base station controller to the base station, and the base station transmits data to the mobile station at the processing timing.

Abstract: A packet transferring/transmitting method is provided for use in a mobile communication system 50. In this packet transferring/transmitting method, an upper node 1 determines the implementation of handover (determination step), and a handover addressing node 2 transfers, of a plurality of packets, a non-transmitted residual packet to a handover addressed node 3, and the upper node 1 transmits a new packet to the handover addressed node 3 (transfer/transmission step). This enables maintaining the number of users to be accommodated while securing a wide bandwidth, sharing a line with high efficiency at soft handover, avoiding data residual in the case of the employment of variable communication rate, and preventing an increase in retransmission.

Abstract: A mobile communication system includes a radio network control apparatus having inside a function block for processing a downlink shared channel and table means for storing various setting information related to the downlink shared channel communication and the downlink shared channel multi-cast communication. According to the information, a multi-cast communication (including uni-cast communication) is realized by using the downlink shared channel for one or more mobile apparatuses. Moreover, a base station has a function to transmit the downlink shared channel data and signaling data received from a radio network control apparatus, to a mobile apparatus via a radio line. Furthermore, it is possible to multi-cast data selectively to a particular mobile apparatus being call-connected.

Abstract: A communications system having an ATM transmission line and an IP transmission line is disclosed that includes a base station capable of communicating with a mobile terminal through a radio link; and a radio network controller capable of communicating with the base station through the ATM or IP transmission line. The radio network controller includes a division part dividing transmission data into signals of a predetermined data size; a transmission part transmitting the divided signals to the base station at predetermined time intervals; a retransmission part retransmitting the signals transmitted to the base station when a response signal from the mobile terminal is not received within a predetermined period; a measuring part measuring a signal response period in a communications channel between the radio network controller and the mobile terminal through the base station; and a determination part determining the predetermined data size based on the measured response period.

Abstract: The data processing system includes I/O units for transmitting and receiving data, control units for processing the data, and a common bus unit including a common bus. Function cards in each unit are daisy-chained to I/O buses having characteristics to support hot-swapping, and both ends of the I/O buses are terminated with resistors respectively. The units are daisy-chained to the common bus, and both ends of the common bus are terminated with resistors respectively. Drivers/receivers drive each bus to transmit and receive data between the common bus and the I/O buses.

Abstract: A mobile communication system includes a mobile communication network connected to a core network (CN) and a plurality of radio network nodes included in the mobile communication network (RAN). Network resources for a data flow between a data transmission node and a data reception node that passes through the CN and RAN are reserved on the basis of RSVP. A region for refreshing a reservation state of network resources concerning the flow is divided into a CN side and an RAN side by taking a predetermined radio network node through which the flow passes as a boundary. Refreshment on the RAN side is conducted with a frequency higher than that of refreshment on the CN side.