Abstract: A communication system according to the present disclosure includes: a required band calculation unit (12, 41) configured to calculate a required band for a plurality of flows received by a bridge apparatus (3), in which, for a flow including burst data among the plurality of flows, the required band calculation unit (12, 41) calculates the required band for the flow based on a data size of the burst data and an allowable delay of the flow; and a speed ratio calculation unit (32, 43) configured to calculate a relative ratio of communication speeds of the plurality of flows based on the required band for the plurality of flows. The bridge apparatus (3) transfers the plurality of flows to a data receiving apparatus (2) according to the relative ratio of the communication speeds.

Abstract: In a control apparatus, a channel selection control unit selects a “switching destination channel pair” from among a plurality of “switching destination channel pair candidates” in a plurality of radio channels. The “switching destination channel pair” is selected based on the degree of similarity between two BSSIDs of two radio channels constituting the currently-connected radio channel pair, and a plurality of degrees of similarity each of which is a degree of similarly between two BSSIDs of two radio channels constituting a respective one of the plurality of switching destination channel pair candidates. A channel switching control unit performs control so that radio units connect to the switching destination channel pair selected by the channel selection control unit.

Abstract: A communication system according to the present disclosure includes: a required band calculation unit (12, 41) configured to calculate a required band for a plurality of flows received by a bridge apparatus (3), in which, for a flow including burst data among the plurality of flows, the required band calculation unit (12, 41) calculates the required band for the flow based on a data size of the burst data and an allowable delay of the flow; and a speed ratio calculation unit (32, 43) configured to calculate a relative ratio of communication speeds of the plurality of flows based on the required band for the plurality of flows. The bridge apparatus (3) transfers the plurality of flows to a data receiving apparatus (2) according to the relative ratio of the communication speeds.

Abstract: A wireless communication system according to one example embodiment of the present invention includes a plurality of base stations and a plurality of terminal devices capable of performing wireless communication by using a plurality of wireless communication schemes that share the same frequency band and further includes a control apparatus that, in each of a plurality of predefined periods, determines a wireless communication scheme permitted for wireless communication and causes the terminal devices to perform only wireless communication based on the determined wireless communication scheme during the periods.

Abstract: Provided are a mobile device and location registration method that, even when packet communications are being restricted and the location cannot be registered, the location can be registered rapidly when the access restriction is released.

Abstract: A terminal device (100) is provided with a C-PLANE processing unit (131) which sets an RRC connection between the terminal device and a radio station (200), and sets an RAB and a PDP context between the terminal device and a network (300), and a U-PLANE processing unit (132) which performs processing for transmitting user data using the PDP context set by the C-PLANE processing unit (131). The C-PLANE processing unit (131) performs local release for releasing the PDP context in the terminal device when the transmission of the user data has failed in a preservation state.

Abstract: The present invention provides a mobile communication system which can perform handover without deleting user data in an HSDPS system. In the handover in a mobile device 1, an RNC 4 makes a Node-B3 as a handover destination establish an HS-DSCH (step S213) to send the same user data respectively from the Node-B2 as a handover source and the Node-B3 as a handover destination to the mobile device 1 with the use of the HS-DSCH (steps S219 to S226). The mobile device 1 restores the user data on the basis of data which can be received before and after an HS-DSCH switching operation (step S215).

Abstract: Provided are a mobile device and location registration method that, even when packet communications are being restricted and the location cannot be registered, the location can be registered rapidly when the access restriction is released.

Abstract: A location name server is disclosed, that comprises a database for storing peripheral information and location names that have been correlated with each other as a plurality of sets, a means for transmitting a request for peripheral information to an objective cellular phone terminal unit when a request for the name of a location at which the object cellular phone terminal unit is located is received, a means for searching the database for the name of the location corresponding to peripheral information (i.e. electric field level) received from the objective cellular phone terminal unit corresponding to the request for the peripheral information, and a means for transmitting the obtained name of the location to a transmission source of the request therefor.

Abstract: A portable telephone terminal 1 has a built-in memory 18, in which either the content of a new call arrived is recorded while continuing prevailing communication or recording of the content of the prevailing communication call is started while answering the new call. After the end of the communication, reproduction of the record in the built-in memory 18 in the portable telephone terminal 1 is made possible immediately or at an appropriate time.

Abstract: A mobile communication terminal through which communication can be made in accordance with both GSM (Global System for Mobile communication) and W-CDMA (Wideband-Code Division Multiple Access) includes a controller which, on receipt of a signal indicating that a W-CDMA call has been made thereto during a GSM stand-by mode for waiting for a GSM call, switches the GSM stand-by mode to a W-CDMA stand-by mode for waiting for a W-CDMA call.

Abstract: A portable telephone terminal 1 has a built-in memory 18, in which either the content of a new call arrived is recorded while continuing prevailing communication or recording of the content of the prevailing communication call is started while answering the new call. After the end of the communication, reproduction of the record in the built-in memory 18 in the portable telephone terminal 1 is made possible immediately or at an appropriate time.

Abstract: A location name server is disclosed, that comprises a database for storing peripheral information and location names that have been correlated each other as a plurality of sets, a means for transmitting a request for peripheral information to an objective cellular phone terminal unit when a request for the name of a location at which the object cellular phone terminal unit is located is received, a means for searching the database for the name of the location corresponding to peripheral information received from the objective cellular phone terminal unit corresponding to the request for the peripheral information, and a means for transmitting the obtained name of the location to a transmission source of the request therefor.

Abstract: A fluorine resin having relatively high melting point such as polytetrafluoroethylene and tetrafluoroethylene-perfluoroalkylvinylether copolymer resins is added to a polyester having the double bond of a polyisocyanate or dibasic acid with a polyhydric alcohol followed by stirring, and a coat of the resulting stirred mixture is applied to a plastic product or the like, whereby the fluorine resin is firmly held on the coated surface, and a film of the fluorine resin is formed on the coated surface.

Abstract: Pure phosphoric acid is prepared from crude wet process phosphoric acid which contains pentavalent vanadium compounds by first extracting the crude acid with an alcohol of limited water solubility and then washing the extracted phosphoric acid solution with aqueous phosphoric acid, in the presence of an agent for reducing the pentavalent vanadium compounds.