Abstract: A broadcast apparatus transmits data of programs. A broadcast control apparatus measures the extent of viewing requests from users of terminals as scores for programs that are transmitted from the broadcast apparatus, and based on the scores that were measured, determines the service quality that is used in the broadcast of the programs. A communication access network apparatus, upon determination of the service quality of programs by the broadcast control apparatus, broadcasts data of programs that are received from the broadcast apparatus by communication channels having a transmission rate that corresponds to the service quality.

Abstract: A communication terminal acquires positional information indicating the position at which the communication terminal exists, from a GPS satellite, determines a range of correspondence information to be acquired, from among the correspondence information that makes the positional information indicating position identified by latitude and longitude correspondent to the frequency to be used at that position and that is stored in a server, based on the acquired positional information, acquires the correspondence information included in the determined range, from the sever, and, identifies the frequency to be used between the communication terminal and the radio base station to be connected to the communication terminal, based on the acquired positional information and the correspondence information included in the range.

Abstract: Time information and positional information indicating the position at which a communication terminal is present are acquired from a GPS satellite, and, based on the acquired positional information and correspondence information which provides the association correspondence between the positional information indicating a position identified by latitude and longitude and the timing of a synchronizing signal for establishing synchronization at the position, the timing of the synchronizing signal for establishing synchronization between the communication terminal and the radio base station is identified.

Abstract: A wireless communication system includes a plurality of base stations that can switch to either first or second communication method and that communicates wirelessly with terminals by the switched communication method and a control apparatus that manages the plurality of base stations. The control apparatus includes: an acquisition unit that acquires, from each base station, throughput of the base station and RSSI of each terminal that communicates wirelessly with the base station; and a switch instruction unit that instructs to each base station switch the current communication method when there is, among the plurality of base stations, a base station in which throughput has decreased within fixed interval, and instructs to re-switch to the communication method before switching to base stations in which throughput before and after switching of communication method is same but a specific standard, based on RSSI after switching of communication method, is not satisfied.

Abstract: Provided is a broadcast system that assigns a communication channel to a program and broadcasts data for the program to terminals, the broadcast system including a broadcast management device and a communication access network device. The management device calculates as a score a measure of viewing requests from users of the terminals for a plurality of programs, and determines a program to actually broadcast on the communication channel based on the score. The communication access network device transmits program data on a communication channel according to the determination of the broadcast management device.

Abstract: A wireless communication system includes a plurality of base stations that are capable of switching to either a first communication method or a second communication method and that carry out wireless communication with terminals by the switched communication method and a control apparatus that manages the plurality of base stations. The control apparatus includes an acquisition unit that acquires information of throughput of each of the plurality of base stations and a switching instruction unit that instructs switching of the current communication method to each of the plurality of base stations when there is a base station in which throughput drops within a fixed interval among the plurality of base stations, and that further instructs re-switching to the communication method that preceded switching to base stations in which throughput dropped from before to after switching communication method among the plurality of base stations.

Abstract: A wireless communication system includes a first communication apparatus that uses first frequency band to communicate wirelessly by time division method, a second communication apparatus that uses second frequency band adjacent to the first frequency band to communicate wirelessly by time division method, and a router apparatus that relays data communicated wirelessly in the first and second communication apparatus.

Abstract: A method according to the present invention comprises determining an available information rate for communication, via a first base station, between a plurality of terminals and a second base station based on link capacity information for wireless communication between the first base station and the second base station, and controlling each of information rates for the communication between the plurality of terminals and the second base station based on the available information rate. Here, the plurality of terminals and the first base station being in a mobile object, the second base station being outside the mobile object.

Abstract: Disclosed is a mobile communications system including a plurality of base station apparatuses which are located at geographically dispersed locations and perform a wireless communication with a mobile device. The system further includes a maximum ratio combining unit which performs maximum ratio combining processing regarding a signal the base station apparatuses receive from the mobile device, and a selection combining unit which performs selection combining processing regarding the signal from the mobile device. A selection unit included in the system selects one or both of the maximum ratio combining unit and the selection combining unit according to at least one of an external factor and a change of a distribution state of the mobile device under communication.

Abstract: Disclosed is a mobile communications system including a plurality of base station apparatuses which are located at geographically dispersed locations and perform a wireless communication with a mobile device. The system further includes a maximum ratio combining unit which performs maximum ratio combining processing regarding a signal the base station apparatuses receive from the mobile device, and a selection combining unit which performs selection combining processing regarding the signal from the mobile device. A selection unit included in the system selects one or both of the maximum ratio combining unit and the selection combining unit according to at least one of an external factor and a change of a distribution state of the mobile device under communication.

Abstract: A wireless communication system includes a plurality of base stations that can switch to either first or second communication method and that communicates wirelessly with terminals by the switched communication method and a control apparatus that manages the plurality of base stations. The control apparatus includes: an acquisition unit that acquires, from each base station, throughput of the base station and RSSI of each terminal that communicates wirelessly with the base station; and a switch instruction unit that instructs to each base station switch the current communication method when there is, among the plurality of base stations, a base station in which throughput has decreased within fixed interval, and instructs to re-switch to the communication method before switching to base stations in which throughput before and after switching of communication method is same but a specific standard, based on RSSI after switching of communication method, is not satisfied.

Abstract: A method according to the present invention comprises determining an available information rate for communication, via a first base station, between a plurality of terminals and a second base station based on link capacity information for wireless communication between the first base station and the second base station, and controlling each of information rates for the communication between the plurality of terminals and the second base station based on the available information rate. Here, the plurality of terminals and the first base station being in a mobile object, the second base station being outside the mobile object.

Abstract: A wireless communication system includes a first communication apparatus that uses first frequency band to communicate wirelessly by time division method, a second communication apparatus that uses second frequency band adjacent to the first frequency band to communicate wirelessly by time division method, and a router apparatus that relays data communicated wirelessly in the first and second communication apparatus.

Abstract: Time information and positional information indicating the position at which a communication terminal is present are acquired from a GPS satellite, and, based on the acquired positional information and correspondence information which provides the association correspondence between the positional information indicating a position identified by latitude and longitude and the timing of a synchronizing signal for establishing synchronization at the position, the timing of the synchronizing signal for establishing synchronization between the communication terminal and the radio base station is identified.

Abstract: A communication terminal acquires positional information indicating the position at which the communication terminal exists, from a GPS satellite, determines a range of correspondence information to be acquired, from among the correspondence information that makes the positional information indicating position identified by latitude and longitude correspondent to the frequency to be used at that position and that is stored in a server, based on the acquired positional information, acquires the correspondence information included in the determined range, from the sever, and, identifies the frequency to be used between the communication terminal and the radio base station to be connected to the communication terminal, based on the acquired positional information and the correspondence information included in the range.

Abstract: A wireless communication system includes a plurality of base stations that are capable of switching to either a first communication method or a second communication method and that carry out wireless communication with terminals by the switched communication method and a control apparatus that manages the plurality of base stations. The control apparatus includes an acquisition unit that acquires information of throughput of each of the plurality of base stations and a switching instruction unit that instructs switching of the current communication method to each of the plurality of base stations when there is a base station in which throughput drops within a fixed interval among the plurality of base stations, and that further instructs re-switching to the communication method that preceded switching to base stations in which throughput dropped from before to after switching communication method among the plurality of base stations.

Abstract: A broadcast apparatus transmits data of programs. A broadcast control apparatus measures the extent of viewing requests from users of terminals as scores for programs that are transmitted from the broadcast apparatus, and based on the scores that were measured, determines the service quality that is used in the broadcast of the programs. A communication access network apparatus, upon determination of the service quality of programs by the broadcast control apparatus, broadcasts data of programs that are received from the broadcast apparatus by communication channels having a transmission rate that corresponds to the service quality.

Abstract: A wireless communication system includes a mobile base station apparatus connecting to a terminal apparatus and being movable, and a management server performing centralized control of the mobile base station apparatus. The mobile base station apparatus measures its position and notifies the management server of position information indicating the position. The management server transmits control information according to the position information notified from the mobile base station apparatus, to the mobile base station apparatus. The mobile base station apparatus operates using the control information received from the management server.

Abstract: The present invention provides a communication restriction control system and a communication restriction control method capable of performing communication restriction control depending on circumstances of communication restriction control area. The mobile terminal transmits a response request signal to a radio response equipment provided in the communication restriction control area which transmits a response signal including identification information as a response to the response request signal. A communication system discriminating equipment which is provided with a database in which the identification information is associated with one of allowed communication circumstances, and allowed communication circumstance is determined by referring to the database according to the identification information, and communication restriction control of the mobile terminal according to the determined result is performed.

Abstract: Provided is a broadcast system that assigns a communication channel to a program and broadcasts data for the program to terminals, the broadcast system including a broadcast management device and a communication access network device. The management device calculates as a score a measure of viewing requests from users of the terminals for a plurality of programs, and determines a program to actually broadcast on the communication channel based on the score. The communication access network device transmits program data on a communication channel according to the determination of the broadcast management device.