Abstract: In a content distribution system, when distributing content to a plurality of user equipment, a multicasting channel is assigned between the user equipment and the distribution system, content being multicasted using this multicasting channel. If a user equipment fails to receive distributed content, the radio network controller allocates an individual channel between the user equipment and the distribution system to perform re-distribution of the content in response to the user's request.

Abstract: A data transmission rate regulating system for regulating the data transmission rate to a plurality of user terminals connected to a communication network comprises a quantity monitor for recognizing the accumulated quantity of received data of a user terminal, and a rate controller for controlling the reception rate of received data of a user terminal on the basis of information obtained by the quantity monitor.

Abstract: A mobile station connection method is disclosed for performing connection between mobile stations using different speech coding rules. When connecting a call between mobile stations which use different speech coding rules, an exchange determines a coding rule or rules to be used by the two mobile stations to be connected for the call. Each mobile station selects from among a plurality of coders and a plurality of decoders a coder and a decoder to be used in accordance with instructions from the exchange. Speech information can thus be transmitted directly between the two mobile stations because coding/decoding are performed in accordance with the coding rule or rules instructed by the exchange regardless of radio systems of the area in which the mobile stations are present.

Abstract: A simultaneous paging signal sending system includes at least one mobile unit, a plurality of base stations for performing communication with the mobile unit, and a base station control apparatus for controlling the base stations. The base station control apparatus includes a BAI→output port correspondence table, and a signal copying/distributing section. In the BAI→output port correspondence table, a plurality of simultaneous paging areas, in which simultaneous broadcasting is performed to the mobile unit, are grouped into one simultaneous broadcast area, and information about each base station in the simultaneous broadcast area is stored to be paired with a broadcast area identifier allocated to each simultaneous broadcast area.

Abstract: A mobile communication system and its method, which uses a discrimination code specific to a mobile terminal as an discriminating signal for both of reverse channel and forward channel between a mobile terminal and a mobile communication network, are provided. A mobile terminal includes a predetermined modulating and demodulating code generator, and makes a call connection request through an access channel based on broadcast information from a base station. The call connection request contains an equipment number of the mobile terminal, and based on this equipment number, the network side device discriminates a code corresponding to this mobile terminal. The base station modulates and demodulates a reverse channel and forward channel signals based on the discriminated code.

Abstract: The present invention provides a signal transmission system capable of assuring continuity and quality of signals in the mobile communication network even though data packet is lost in the transmission line. In a signal transmission side, a convolutional encoder for convolutionaly encoding digital data to be transmitted to signal codes having redundant codes for correction, a interleaving unit for replacing a location of each signal code output from the convolutional encoder, a packet generation unit for generating data packets, for signal transmission, from signal codes output from the interleaving unit; and in a signal reception side, a convolutional code decoder for convolutionaly decoding signal codes received from the signal transmission side, and reproducing signal codes corresponding to lost packets during transmission, and outputting original digital data.

Abstract: In a multi-network environment, a request signal is sent from a user terminal to each of a number of communications networks. In response, the network returns a response signal. Based on the response signals received from all networks, the user selects one of the networks. The response signal contains information on communication services of the requested network such as tariff data and current congestion level. The user terminal then establishes a connection to the selected communications network. In a modified embodiment, request signals may be sent during a handover to base stations of different wireless networks to request for congestion information for selecting a network having the lowest congestion level as a handover destination. In a further modification, when a congestion is encountered in a first network in response to a user's request, a second network of low congestion level is selected and indicated to the user.

Abstract: In a cellular mobile communication network, mobile records are maintained in a first database for indicating a base station area when a mobile station crosses a boundary between adjacent location areas and enters that base station area. A second database is associated with each control group of base station areas for maintaining mobile records for indicating a base station area when the mobile station successively crosses a boundary between adjacent base station areas. In response to a call request, one of the mobile records of the first database is accessed to identify a control group of base station areas and a search request is produced. In response to the search request, one of the mobile records of the second database is accessed and a paging signal is broadcast to at least one base station area indicated in the accessed mobile record to wait for a response from the mobile station.

Abstract: A communication fee charging system includes a switching apparatus a measuring unit a summing unit and a generating unit. The switching apparatus connects a subscriber terminal with at least one counter terminal. The measuring unit measures one of a number of channels and a band quantity occupied in the connection between the subscriber terminal and the at least one counter terminal in response to a measurement start signal, to output a measurement result. The summing unit sums the measurement result. The generating unit outputs the measurement start signal to the measuring unit.

Abstract: A communication channel assigning system is disclosed, that comprises a mobile communication system having a plurality of radio base stations disposed in a plurality of radio zones, a plurality of mobile stations for communicating with the base stations using communication channels, and a radio base station controlling unit for controlling the radio base stations, a transmitting means for transmitting data corresponding to a code division multiple-access radio modulation system, a means for assigning a communication channel to the data transmitted by the transmitting means, and a means for using communication channels with a plurality of bandwidth in the same frequency band.

Abstract: In a communication system of a CDMA type used in a base station to control transmission power sent to a mobile station through a forward channel, a base station controller controls transmission power of a plurality of base station transceivers by monitoring channel reception quality information sent from each of the mobile stations which are communicating with the base station and by reducing the transmission power in each of the transceivers with reference to total or average transmission power of the base station.

Abstract: A transmission power control apparatus capable of reducing interference, in a mobile communication adopting the CDMA system, with other communications by decreasing transmission power in one direction of channel taking communication quality of other channel of direction into account is provided. A reverse channel error rate judgment section for judging a communication quality of the reverse channel by a reverse channel frame error rate detected and a forward channel error rate judgment section for judging a communication quality of the forward channel by a forward channel frame error rate reported by a mobile terminal are provided in the radio base station. The forward channel error rate judgment section, when detected, reports the state of communication degradation of own direction of channel to the reverse channel error rate judgment section which, in turn, controls to instruct the mobile terminal to decrease transmission power of the reverse channel.

Abstract: In a mobile communication method, when a terminating call to a mobile station is generated, one of subscriber lines which is connected to a local switch and assigned to the mobile station is captured. A mobile station identification number defined in correspondence with the captured subscriber line is retrieved by using a physical or logical address of the captured subscriber line as a parameter. The mobile station is called through at least one base station by using the retrieved mobile station identification number. The terminating call is connected to the mobile station in accordance with a response from the mobile station with respect to calling. A mobile communication system is also disclosed.

Abstract: An authentication system includes a mobile station, a base station, a mobile station controller, and a data base. When the base station determines that authentication is required, an authentication calculation request is generated with respect to the mobile station with a random number generated as an authentication random number by the base station. An authentication calculation result as a response from the mobile station is received by the base station. The base station initiates the mobile station controller by using the authentication random number, the authentication calculation result, and the identification number of the mobile station as set parameters of a signal.

Abstract: A channel allocation control is performed in an ISDN network comprising full-rate channels each accommodating subrate channels multiplexed therein. A use communication capacity of each full-rate channel is monitored when subrate channel release occurs in any full-rate channel. Referring to the respective use communication capacities of the full-rate channels, subrate channel reallocation is performed such that any subrate channel in use accommodated in a certain full-rate channel is switched to another full-rate channel. The reallocation causes the full-rate channel to be empty. The emptied full-rate channel is released.

Abstract: A cellular mobile telephone exchange system comprises a switch which allows optional setting of the connecting conditions between a plurality of radio base-station transmitter-receivers and a plurality of base-station controllers.

Abstract: A mobile communication system and a mobile station paging method are provided which are capable of sending a mobile station paging signal only to base station areas in which a mobile station to be paged for an incoming call might be present. The mobile communication system is provided with a location register 31, a mobile station paging signal transfer node 21 and base stations 11 to 13. The mobile station paging signal transfer node 21 receives a mobile station paging signal from the location register 31 which has identified the location area for paging a mobile station for an incoming call, and the mobile station paging signal transfer node 21 searches sublocation information to identify certain base stations to receive the mobile station paging signal.

Abstract: A mobile communication system provides different types of radio communications using a same mobile terminal service. One service area is provided by conventional base stations by which the mobile communication network is carried out, and another service area is provided by a fixed network terminal device, such as a cordless home phone connected in a public fixed communication network, and the mobile terminal device can be used in both service areas by switching over internal call circuit appropriately. On the other hand, a call directed to the mobile terminal device is suitably routed to the mobile terminal device in either of the service areas by a terminal device switching circuit in the mobile communication systems having a database on which location information of the mobile terminal device are registered.

Abstract: In a mobile communication system, a plurality of mobile base stations and a home memory station are connected directly to an integrated service digital network (ISDN) without mobile control stations. Connection between the mobile base stations is established by the ISDN.

Abstract: Base stations are connected to subscriber lines of neighboring ISDN local switches, and mobile subscriber connection control equipment connected to the subscriber line of a particular ISDN local switch manages mobile subscriber data register equipment. Connection of a call which originates from or terminates at a mobile station, registration of the location of the mobile station, and channel switching process during service are performed by way of the mobile subscriber connection control equipment using an ISDN subscriber interface.