摘要:
There is provided a management server including a holding unit for holding a location/frequency list in which location information and frequency information are associated, a list creation unit for creating an available frequency list by extracting, from the location/frequency list, frequency information corresponding to location information received from a base station, and a list transmission unit for transmitting the available frequency list created by the list creation unit to the base station.
摘要:
An information providing apparatus includes: a map information storage unit which maintains map information with which at least one of position information, address information, and names of buildings or shops is associated; a communication parameter obtaining unit which obtains communication parameters associated with the position information; an image information creating unit which creates image information in which the communication parameters associated with the position information are described on the map information; and a display unit which displays the image information created by the image information creating unit.
摘要:
There is provided a communication control device including a power control unit configured to control a transmission power of a secondary communication service to be provided at least near an area where a first primary communication service is provided. The power control unit increases the transmission power of the secondary communication service upon performing a switching from subscriber identity module (SIM) information corresponding to the first primary communication service to SIM information corresponding to a second primary communication service in a terminal device using a communication service by using any SIM information switched between a plurality of SIM information.Representative Drawing
摘要:
Provided is an information processing method including an extraction procedure of extracting another communication service provider other than a first communication service provider based on a result of a comparison of a congestion degree of a base station related to the first communication service provider with a congestion degree of each of base stations related to one or a plurality of communication service providers other than the first communication service provider, and an exchange control procedure of performing control to transfer the first access right from the first wireless terminal device to a second wireless terminal device having a second access right to access a base station related to the other extracted communication service provider, and to transfer the second access right from the second wireless terminal device to the first wireless terminal device.
摘要:
There is provided a communication control apparatus to control handover with terminal equipment including a position information acquisition unit to acquire position information containing a cell ID specifying a cell to which the terminal equipment is connected, a storage unit to store a series of the position information acquired by the position information acquisition unit as position information history, a determination unit to determine whether the terminal equipment should have been connected to each cell specified by each cell ID contained in the position information history on a movement route of the terminal equipment, and a data generation unit to generate recommended handover order data indicating connection order of cells to be recommended for the terminal equipment by removing a cell ID specifying a cell determined to which the terminal equipment should not have been connected by the determination unit from the position information history.
摘要:
There is provided a radio communication terminal including a measurement execution section which measures, as a measurement value, strength or quality of a signal received by a reception circuit from a base station, a measurement report creation section which creates a measurement report containing the measurement value, an offset amount setting section which sets a correction amount based on a usage status of the radio communication terminal by a user, an offset correction section which calculates an output value by subtracting the correction amount set by the offset amount setting section from the measurement value measured by the measurement execution section, and a measurement report transmission timing control section which designates a timing of transmitting the measurement report created by the measurement report creation section based on the output value calculated by the offset correction section and a threshold.
摘要:
Disclosed herein is a phase lock loop (PLL) circuit capable of executing digital control of an oscillation circuit thereof by using a dividing ratio represented by a digital value obtained by dividing an oscillation frequency by a reference frequency. The PLL circuit includes a phase comparator for comparing the digital value obtained by converting the dividing ratio with a digital value representing each cumulative addition value of a clock count expressed in a decimal-point format representing the oscillation signal in each period of a reference signal, a loop-gain control section configured to control the loop gain of the PLL circuit, and an output converging section configured to converge an output by the phase comparator.
摘要:
There is provided a PLL circuit including a phase comparison unit that compares an accumulated addition value of a division ratio converted into a digital value and that of an oscillating signal from an oscillator controlled by using the digital value in each cycle of a reference frequency, a data conversion unit that has a variable gain amplification unit to change a gain and causes output of the phase comparison unit to converge to an arbitrary setting value, an offset detection unit that detects an offset arising due to a change in gain of the variable gain amplification unit using output of the phase comparison unit, and an offset compensation unit that compensates for the offset detected by the offset detection unit in timing when the gain of the variable gain amplification unit changes.
摘要:
A wireless communication apparatus includes an RF front-end unit constituting reception and transmission systems, a digital baseband signal processor, and a bias current circuit. The digital baseband signal processor performs a process of a digital baseband receive signal received from a reception system and performs a process of a digital baseband transmit signal supplied to a transmission system. The bias current circuit supplies a reference current to at least a part of a circuit constituting the reception system within the RF front-end unit. The bias current circuit switches the reference current supplied to at least the part of the circuit constituting the reception system within the RF front-end unit, in response to a transmission-operation control signal outputted by the digital baseband signal processor to the transmission system within the RF front-end unit.
摘要:
Disclosed herein is a phase lock loop (PLL) circuit capable of executing digital control of an oscillation circuit thereof by using a dividing ratio represented by a digital value obtained by dividing an oscillation frequency by a reference frequency. The PLL circuit includes a phase comparator for comparing the digital value obtained by converting the dividing ratio with a digital value representing each cumulative addition value of a clock count expressed in a decimal-point format representing the oscillation signal in each period of a reference signal, a loop-gain control section configured to control the loop gain of the PLL circuit, and an output converging section configured to converge an output by the phase comparator.