Abstract: A wireless communication apparatus includes a storage, a communicator configured to perform wireless communication with a cellular network, and a controller configured to establish a first wireless connection with the cellular network when available Subscriber Identity Module (SIM) information is not stored in the storage, the first wireless connection being an unencrypted connection. The communicator is configured to transmit predetermined information to the cellular network through the first wireless connection, the predetermined information being used to establish a second wireless connection with the cellular network, and the second wireless connection being an encrypted connection. The controller is configured to, after the first wireless connection is released, establish the second wireless connection with the cellular network by using the predetermined information. The communicator is configured to receive the available SIM information through the second wireless connection.

Abstract: A base station, when receiving a random access preamble transmitted from a plurality of user terminals in a contention based random access procedure, transmits a random access response to the plurality of user terminals. The base station comprises a controller configured to select, when receiving a plurality of connection request messages transmitted by the plurality of user terminals in response to the random access response, a connection request message that satisfies a predetermined condition from among the plurality of connection request messages and to transmit a contention resolution message corresponding to the selected connection request message.

Abstract: A source base station eNB#1 forwards a header-compressed packet addressed to a radio terminal UE, to a target base station eNB#2, at a time of a handover procedure of the radio terminal from the source base station eNB#1 to the target base station eNB#2. Upon receipt of the forwarded header-compressed packet and a header-non-compressed packet addressed to the radio terminal UE from a core network EPC at the time of the handover procedure, the target base station eNB#2 generates an ROHC context corresponding to a header compression level of the header-compressed packet, by using the header-compressed packet and the header-non-compressed packet.

Abstract: An LTE base station (100) conducts radio communication with a radio terminal which can execute a handover between a plurality of radio communication systems having different attainable communication rates. The LTE base station (100) is provided with a service detection unit (121A), which detects the classification of a communication service being used by a radio terminal, and a transmission unit (111), which sends the radio terminal a command for handover to the radio base station of a radio communication system, which handles the communication rate required for the communication service detected by the service detection unit (121A).

Abstract: An LTE base station (10-1) acquires handover history information indicating the handover history of a radio terminal (40). On the basis of the acquired handover history information, the LTE base station (10-1) determines another LTE base station with which an X2 connection is to be established.

Abstract: A source base station eNB#1 forwards a header-compressed packet addressed to a radio terminal UE, to a target base station eNB#2, at a time of a handover procedure of the radio terminal from the source base station eNB#1 to the target base station eNB#2. Upon receipt of the forwarded header-compressed packet and a header-non-compressed packet addressed to the radio terminal UE from a core network EPC at the time of the handover procedure, the target base station eNB#2 generates an ROHC context corresponding to a header compression level of the header-compressed packet, by using the header-compressed packet and the header-non-compressed packet.

Abstract: An LTE base station (10-1), when an X2 interface to another LTE base station is working, uses the X2 interface to transmit an ICIC-related message to the other LTE base station. When the X2 interface to the other LTE base station is not working, the LTE base station (10-1) uses an S1 interface to transmit an ICIC-related message to the other LTE base station.

Abstract: An LTE base station (100) conducts radio communication with a radio terminal which can execute a handover between a plurality of radio communication systems having different attainable communication rates. The LTE base station (100) is provided with a service detection unit (121A), which detects the classification of a communication service being used by a radio terminal, and a transmission unit (111), which sends the radio terminal a command for handover to the radio base station of a radio communication system, which handles the communication rate required for the communication service detected by the service detection unit (121A).

Abstract: An LTE base station (10-1) transmits an SCTP-connection request message, which is a request to establish an X2 connection, to another LTE base stations which is a handover target, when executing a handover.

Abstract: Disclosed is a radio terminal that sets a communication path that transits a radio base station and a communication path that transits a radio base station, through an access gateway that is positioned upon a backhaul network, the radio terminal including a transmitter which transmits an uplink packet over the communication path to the access gateway, and transmits a dummy packet over the communication path to the access gateway, and a determination unit, which employs the uplink packet to determine a first communication quality of the communication path and employs the dummy packet to determine a second communication quality of the communication path wherein, when the second communication quality is higher than the first communication quality, the transmitter stops the transmission of the uplink packet over the communication path and transmits the uplink packet over the communication path.

Abstract: A radio base station, comprising a DAP/RLSE/FLSE judging unit configured to judge whether the radio base station functions as both RLSE and FLSE, an application judging unit configured to judge whether the application running on the radio terminal is a specific application, and a handover instruction transmission unit configured to transmit a handover instruction to the radio terminal to handover either the RLSE or FLSE to another radio base station, when it is determined that the radio base station functions both as RLSE and FLSE and the running application is not the specific application.

Abstract: A garment for electrically stimulating muscles is provided to be used for, e.g., rehabilitation or exercise whereby an electrode can be conveniently provided at such a position as allowing the electrode to stimulate the nerve-muscular junction of a muscle to be moved in toning up the muscle through electrical stimulation on the muscle by taking advantage of the muscular contraction caused by electrically stimulating the muscle.

Abstract: An end portion of an optical fiber element 11 is dipped into an etchant to shape that portion of the fiber element immersed in said etchant into a coaxial reduced-diameter portion by etching while causing that portion of the fiber element where the etchant rising to a certain height above the level surface of the etchant due to surface tension into a conical tapered surface portion which is formed between the reduced-diameter portion and un-etched portion of the fiber element, and subsequently thereafter, the reduced-diameter portion is cut to have a very short length thereof remained.

Abstract: In an optical connector, an end face (12) of an optical fiber (11) is brought into contact with an end face of a mating connector in a predetermined direction (13) to achieve connection. The optical connector includes a housing (14) provided with an aligning portion (16) having a hole (15) for insertion of the optical fiber, and a holding portion (21) for holding the optical fiber. The holding portion (21) is movable in the predetermined direction. The holding portion is fixed to the housing with the optical fiber inserted into the hole in the aligning portion and serves to adjust the amount of protrusion of the optical fiber from an end face (22) of the aligning portion. The housing is provided with a guide portion (17) for guiding the optical fiber to the hole in the aligning portion.

Abstract: An end portion of an optical fiber element 11 is dipped into an etchant to shape that portion of the fiber element immersed in said etchant into a coaxial reduced-diameter portion by etching while causing that portion of the fiber element where the etchant rising to a certain height above the level surface of the etchant due to surface tension into a conical tapered surface portion which is formed between the reduced-diameter portion and un-etched portion of the fiber element, and subsequently thereafter, the reduced-diameter portion is cut to have a very short length thereof remained.

Abstract: An end portion of an optical fiber element 11 is dipped into an etchant to shape that portion of the fiber element immersed in said etchant into a coaxial reduced-diameter portion by etching while causing that portion of the fiber element where the etchant rising to a certain height above the level surface of the etchant due to surface tension into a conical tapered surface portion which is formed between the reduced-diameter portion and un-etched portion of the fiber element, and subsequently thereafter, the reduced-diameter portion is cut to have a very short length thereof remained.

Abstract: In an optical fiber connector (1), an outer member (2) holds a portion of an optical fiber (4A) remote from its connecting end which is connectable to a connecting end of a counterpart optical fiber. An aligning member (3) is held by the outer member so as to be movable along the optical fiber. The aligning member carries out positioning of the connecting end of the optical fiber. The aligning member is urged by a spring (5) in a direction to project from the outer member. When connecting the optical fiber to the counterpart optical fiber, the aligning member is moved in a direction opposite to the foregoing direction against an urging force applied by the spring so that the connecting end of the optical fiber is projected from the aligning member.

Abstract: In an optical connector, an end face (12) of an optical fiber (11) is brought into contact with an end face of a mating connector in a predetermined direction (13) to achieve connection. The optical connector includes a housing (14) provided with an aligning portion (16) having a hole (15) for insertion of the optical fiber, and a holding portion (21) for holding the optical fiber. The holding portion (21) is movable in the predetermined direction. The holding portion is fixed to the housing with the optical fiber inserted into the hole in the aligning portion and serves to adjust the amount of protrusion of the optical fiber from an end face (22) of the aligning portion. The housing is provided with a guide portion (17) for guiding the optical fiber to the hole in the aligning portion.

Abstract: An end portion of an optical fiber element 11 is dipped into an etchant to shape that portion of the fiber element immersed in said etchant into a coaxial reduced-diameter portion by etching while causing that portion of the fiber element where the etchant rising to a certain height above the level surface of the etchant due to surface tension into a conical tapered surface portion which is formed between the reduced-diameter portion and un-etched portion of the fiber element, and subsequently thereafter, the reduced-diameter portion is cut to have a very short length thereof remained.

Abstract: An automatic tuning device for use in a synthesizer of an electronic musical instrument in which an error signal is produced corresponding to an output tone signal from each of a plurality of voltage controlled oscillators and added to the input thereto for automatic tuning.