Abstract: A noise filter includes a filter device and a filter retainer. The filter device includes a device unit having at least one capacitor provided therein, an input side lead wire extending from the device unit, an output side lead wire extending from the device unit, and a ground connection portion provided on the device unit. The filter device forms the noise filter that uses a mutual inductance between the input side lead wire and the output side lead wire. The filter retainer has a holding structure configured to maintain an arrangement of the input side lead wire and the output side lead wire. The arrangement forms an overlapping section in which the lead wires are closely opposed to each other. The noise filter may be attached to a harness.

Abstract: An increase in communication load in a network due to increasing messages for requesting information is suppressed. When a message for requesting information and a response message thereto are sent and received between a communication device (N1-Nn) that is an information requester and an information provider (Nx) on a network (NW) via a communication device (1), the communication device (1) stores the information acquired from the response message in a response information storage section (4), and when any communication device requests at least part of the same information, a control section (5) creates a response message including the requested information and responds.

Abstract: When one base station forms a plurality of cells that use different frequency bands, a handover caused by movement between cells can be successfully performed with a high probability. A radio base station adapted to communicate with a radio communication terminal, comprising: a communication unit which performs a first communication with the radio communication terminal by using a first frequency, wherein the communication unit performs a second communication with the communication terminal by using a second frequency that is different from the first frequency; and a controller which performs a control, of at least one of a first power of the first communication and a second power of the second communication, based on a first power-related quality of the first communication and a second power-related quality of the second communication.

Abstract: A location judgment unit (411) judges whether an installation location of a base station (10) is in a first area corresponding to a service area of a first network operator. A frequency determination unit (412) determines, by using a first procedure, a radio frequency for use in wireless communication between the base station (10) and a mobile station (30) when the installation location of the base station (10) is in the first area, and determines the radio frequency of the base station (10) by using a second procedure different from the first procedure when the installation location of the base station (10) is outside the first area. The second procedure includes: receiving information on a frequency available in the installation location of the base station (10) from a frequency management system (50) that manages a frequency of a second area including the installation location of the base station (10); and determining a radio frequency of the base station (10) based on the frequency information.

Abstract: When one base station forms a plurality of cells that use different frequency bands, a handover caused by movement between cells can be successfully performed with a high probability. A radio base station adapted to communicate with a radio communication terminal, comprising: a communication unit which performs a first communication with the radio communication terminal by using a first frequency, wherein the communication unit performs a second communication with the communication terminal by using a second frequency that is different from the first frequency; and a controller which performs a control, of at least one of a first power of the first communication and a second power of the second communication, based on a first power-related quality of the first communication and a second power-related quality of the second communication.

Abstract: A signal transmission device drives a light-emitting element and outputs an optical signal depending on a data signal from an electronic device. The device includes an element driving portion which supplies a driving current to the light-emitting element, wherein the driving current is obtained by superimposing a modulation current on a bias current, the modulation current being dependent on the data signal indicating emitting information of the light-emitting element. A temperature compensation portion of the device controls the bias current and the modulation current depending on the temperature so that a temperature-current characteristic of the light-emitting element is reproduced based on the voltage which is dependent on the temperature and the voltage which is independent from the temperature, thereby performing current control depending on the temperature.

Abstract: A disclosed base station gateway apparatus has a C-plane processing unit and a U-plane processing unit. When a mobile station performs handover from a subordinate source base station to a subordinate target base station, the C-plane processing unit terminates S1AP signaling received from the source base station and the target base station without relaying the S1AP signaling to a mobility management apparatus. The U-plane processing unit inserts, into U-plane data that is received from a serving gateway apparatus and that is to be transferred to the source base station, an end marker indicating that the U-plane data is the last data at a predetermined timing, and switches the transfer destination of the U-plane data, received from the serving gateway apparatus, from the source base station to the target base station at a timing immediately after the end marker is inserted.

Abstract: A ground connection structure is a structure for collectively connecting, to a body of a vehicle, a plurality of grounding wires which are connected to respective electrical components installed in the vehicle. The ground connection structure includes: a connection box to which the plurality of grounding wires are connected; a grounding terminal part connected to the vehicle in an electrically conducting state; and an electrically conducting connection part having one end connected to the connection box and the other end connected to the grounding terminal part, the electrically conducting connection part connecting the connection box and the grounding terminal part in an electrically conducting manner. The electrically conducting connection part is made of a low-inductance material having low inductance.

Abstract: A ground connection structure is a structure for collectively connecting, to a body of a vehicle, a plurality of grounding wires which are connected to respective electrical components installed in the vehicle. The ground connection structure includes: a connection box to which the plurality of grounding wires are connected; a grounding terminal part connected to the vehicle in an electrically conducting state; and an electrically conducting connection part having one end connected to the connection box and the other end connected to the grounding terminal part, the electrically conducting connection part connecting the connection box and the grounding terminal part in an electrically conducting manner. The electrically conducting connection part is made of a low-inductance material having low inductance.

Abstract: A wireless communication system includes a wireless base station FAP2 which communicates with a mobile communication terminal UE1; a core network apparatus CN4 which is a higher-level apparatus of the wireless base station; and a femto wireless base station gateway GW3 which relays between the FAP2 and the core network apparatus CN4. The wireless base station FAP2 includes a determination unit 21a which determines whether to stop voice call reception processing or voice call transmission processing with reference to determination information upon detection of a voice call reception to the mobile communication terminal UE1 within a communication service area or a voice call transmission from the mobile communication terminal UE1 within the communication service area in the FAP2; and a signal processing unit 25a which informs a higher-level apparatus of a message including a determination result when the determination unit determines to stop the processing.

Abstract: Proposed is a technique for detecting a damaged VCSEL in a short time and at low cost. It shows the light emission spectrum of a multi-mode VCSEL before an ESD damage, and the light emission spectrum which shows several peaks corresponding to the structure of the active layer (MQW) and the upper and lower reflectors (DBR) is obtained. On the other hand, when the VCSEL which has an ESD damage has a damage in the active layer, the light emission spectrum which shows fewer peaks than the original number of peaks is obtained. Accordingly, the light spectrum analyzer analyzes the light emission spectrum, and it is determined that ESD damage has occurred when the number of peaks is equal to or smaller than a predetermined number, e.g., two peaks.

Abstract: Provided is a radio communication system which enables optimal cell switching. A broker femtocell base station is installed in an entrance of the buildings, and sub-femtocell base stations are installed in the buildings. An adjacent cell list and broker femtocell priority selection setting information are set as system information notified from a macro cell, the adjacent cell list including a broker PSC of the broker femtocell base station and PSCs of adjacent macro cells, the broker femtocell priority selection setting information being the information for preferentially selecting the broker femtocell base station. An adjacent cell list and sub-femtocell priority selection setting information are set as system information of the broker femtocell, the adjacent cell list including a PSC of a macro cell, and a sub PSC of an adjacent femtocell, the sub-femtocell priority selection setting information being the information for preferentially selecting the sub-femtocell base station.

Abstract: A location judgment unit (411) judges whether an installation location of a base station (10) is in a first area corresponding to a service area of a first network operator. A frequency determination unit (412) determines, by using a first procedure, a radio frequency for use in wireless communication between the base station (10) and a mobile station (30) when the installation location of the base station (10) is in the first area, and determines the radio frequency of the base station (10) by using a second procedure different from the first procedure when the installation location of the base station (10) is outside the first area. The second procedure includes: receiving information on a frequency available in the installation location of the base station (10) from a frequency management system (50) that manages a frequency of a second area including the installation location of the base station (10); and determining a radio frequency of the base station (10) based on the frequency information.

Abstract: A radio network controller (1) to be connected to a mobile terminal via a radio base station comprises: holding means (UE check list 15 for each system) for, when each mobile terminal has failed to make a radio connection to a cell (s) selected by a cell selection algorithm that assigns a cell (s) under the radio base station to the mobile terminal, holding information of the cell (s) to which the mobile terminal has failed to make a radio connection, for a predetermined period; and execution means (cell selection processor 11) for excluding a cell (s) to which the mobile terminal has failed a radio connection once in the past, from adjacent cell candidates of said mobile terminal, based on the cell information held by the holding means, for a predetermined period, and to execute the cell selection algorithm.

Abstract: Proposed is a technique for detecting a damaged VCSEL in a short time and at low cost. It shows the light emission spectrum of a multi-mode VCSEL before an ESD damage, and the light emission spectrum which shows several peaks corresponding to the structure of the active layer (MQW) and the upper and lower reflectors (DBR) is obtained. On the other hand, when the VCSEL which has an ESD damage has a damage in the active layer, the light emission spectrum which shows fewer peaks than the original number of peaks is obtained. Accordingly, the light spectrum analyzer analyzes the light emission spectrum, and it is determined that ESD damage has occurred when the number of peaks is equal to or smaller than a predetermined number, e.g., two peaks.

Abstract: A wireless communication system according to the present invention includes a wireless communication terminal and a base station apparatus. The base station apparatus transmits to the wireless communication terminal, cell information relating to a cell of the base station apparatus, and selectability information indicating whether the cell information is manually selectable. The wireless communication terminal receives from the base station apparatus the cell information and the selectability information of the base station apparatus.

Abstract: Provided is a radio communication system which enables optimal cell switching. A broker femtocell base station is installed in an entrance of the buildings, and sub-femtocell base stations are installed in the buildings. An adjacent cell list and broker femtocell priority selection setting information are set as system information notified from a macro cell, the adjacent cell list including a broker PSC of the broker femtocell base station and PSCs of adjacent macro cells, the broker femtocell priority selection setting information being the information for preferentially selecting the broker femtocell base station. An adjacent cell list and sub-femtocell priority selection setting information are set as system information of the broker femtocell, the adjacent cell list including a PSC of a macro cell, and a sub PSC, of an adjacent femtocell, the sub-femtocell priority selection setting information being the information for preferentially selecting the sub-femtocell base station.

Abstract: A wireless communication system includes a first NodeB that forms a cell; and a relay apparatus to which the first NodeB connects and which relays data transmitted and received between the first NodeB and a core network. The first NodeB broadcasts identification information on the relay apparatus to which the first NodeB connects.

Abstract: Base station 101 sets, when a transmission power value set in advance is smaller than a threshold set in advance, the threshold as a power value to be notified, sets a value obtained by subtracting the threshold from the transmission power value as a compensation power value, and transmits the power value to be notified and the compensation power value to UE 301. UE 301 receives the power value to be notified and the compensation power value transmitted from base station 101.

Abstract: A radio communication system according to the present invention includes a base station device and a radio communication terminal. The radio communication terminal selects a cell of the base station device or a cell group to which the cell belongs and transmits information, that denotes that the cell or the cell group has been selected, to the base station device. The base station device receives the information.