Abstract: A push-type information service to a client located within a local network and having only a local IP address becomes possible via a network address converting apparatus. A network address conversion program implementing the network address converting process may be stored on a storage medium. When assignment of an Internet IP address to a client is requested by a host server, an IP address assigning unit assigns an Internet IP address to that client. An address conversion table producing unit produces an address conversion table describing the correspondence between the Internet IP address assigned to the client and the local IP address of the client. An address converter notifies the host server of the assigned Internet IP address. After that, if the host server sends data to the acquired Internet IP address, the address converter converts the destination of the data to the corresponding local IP address of the client by referring to the address conversion table.

Abstract: To realize real-time information distribution and a server that reliably delivers information to a mobile terminal and a push-type control method for an information monitoring device. The push-type function server of this invention accumulates information to be distributed and identifier information of destination terminal devices; obtains address information of a terminal device from a home radio server that manages the terminal device according to the identifier information, and transfers distributed information to a radio server connected to a destination terminal device based on the address information, and the information monitoring device monitors whether or not data to be distributed to a specified terminal device have been delivered to other information-storing severs.

Abstract: A method, system and computer readable medium for a wireless radio communication processing unit capable of, when setting or changing a communication frequency to be used in one of base station wireless radio units, setting a frequency which does not interfere with communication frequencies being used in other base station wireless radio units. In the wireless radio communication processing unit, when a power supply is turned on, when the unit is reset, or a fault detection section detects a fault resulting from an interfering wave or the like in a communication area of the base station wireless radio unit, a station information requesting section inquires for a channel being used in a base station wireless radio unit that a different wireless radio communication processing unit manages.

Abstract: A mobile wireless system, method and apparatus for establishing a link between a terminal device and the Internet by communicating with a base station wireless apparatus of a wireless communicating apparatus having at least one wireless serve connected to the Internet and the base station wireless apparatus that is connected to the wireless server for performing wireless communication. Under a condition in which the mobile wireless apparatus can communicate with multiple base station wireless apparatuses, when the base station wireless apparatus, which communicated with the mobile wireless apparatus, currently communicates with another mobile wireless apparatus, the mobile wireless apparatus communicates with another base station wireless apparatus obtained by selecting from among a plurality of other base station apparatuses, which are located in neighboring communication areas of the base station wireless apparatus and have available communication links.

Abstract: A mobile wireless method and apparatus and wireless communication system wherein a receiving unit receives a radio signal, a PLL unit demodulates the radio signal, a storage unit stores channel information of a base station wireless apparatus and electrical field intensity information, a first data analyzing unit obtains a destination of received data and stores it in the storage unit, a second data analyzing unit obtains channel information of another base station wireless apparatus and stores the channel information in the storage unit, and an electrical field intensity measuring unit measures the electrical field intensity of the signal received by the receiving unit and stores the corresponding electrical field intensity data in the storage unit. The base station wireless apparatus transmits channel information to which an index in accordance with a distance to another base station wireless apparatus is added. Program instructions for implementing the method are stored in a computer readable medium.

Abstract: A mobile wireless method and apparatus and wireless communication system wherein a receiving unit receives a radio signal, a PLL unit demodulates the radio signal, a storage unit stores channel information of a base station wireless apparatus and electrical field intensity information, a first data analyzing unit obtains a destination of received data and stores it in the storage unit, a second data analyzing unit obtains channel information of another base station wireless apparatus and stores the channel information in the storage unit, and an electrical field intensity measuring unit measures the electrical field intensity of the signal received by the receiving unit and stores the corresponding electrical field intensity data in the storage unit. The base station wireless apparatus transmits channel information to which an index in accordance with a distance to another base station wireless apparatus is added. Program instructions for implementing the method are stored in a computer readable medium.

Abstract: A wireless server system and method for communicating between a user terminal and Internet a wirelessly. It is based on a user terminal having a fixed terminal and a terminal unit so that an Internet connection can be made by way of the terminal unit to an appropriate wireless server. The system has at least one wireless server connected to Internet; and a plurality of wireless station devices connected to the wireless server, and the system communicates wirelessly with the terminal unit of the user terminal; wherein one wireless server within a district of communication range of the wireless station devices is designated as a home server for the terminal unit, and the fixed terminal receives data sent wirelessly from Internet by way of the terminal unit.

Abstract: A communication system and a communication method arranged to obtain a diversity effect in mobile communication, to reduce the influence of multipath interference, fading or the like, to perform comparatively simple information communication such as message communication with improved reliability, and to achieve effective utilization of frequencies. A plurality of base stations having receivers are provided around an urban area within base station zones. The base stations repeatedly transmit the same message data. Receiving repeaters are provided in the urban area and small or medium suburban zones. Each receiving repeater relays a signal from a small mobile terminal via an Internet network if the output level of the mobile terminal is so low that direct transmission to one of the base stations is impossible. A 25 kHz frequency band is divided into four narrower bands of 6.25 kHz in one of the embodiments.

Abstract: A communication system and a communication method arranged to obtain a diversity effect in mobile communication, to reduce the influence of multipath interference, fading or the like, to perform comparatively simple information communication such as message communication with improved reliability, and to achieve effective utilization of frequencies. A plurality of base stations having receivers are provided around an urban area within base station zones. The base stations repeatedly transmit the same message data. Receiving repeaters are provided in the urban area and small or medium suburban zones. Each receiving repeater relays a signal from a small mobile terminal via an Internet network if the output level of the mobile terminal is so low that direct transmission to one of the base stations is impossible. A 25 kHz frequency band is divided into four narrower bands of 6.25 kHz in one of the embodiments.

Abstract: A method of checking and acknowledging reception of a message in a two-way radio communication system without causing a reduction in the efficiency of processing the message, a storage medium on which a reception checking and acknowledging program is stored for use in the two-way radio communication system, and a two-way radio communication system and a base station for use in the two-way radio communication system is provided. If message data transmitted by a terminal device is received by a base station via a relay station and an Internet network, the base station generates reception acknowledgment data and transmits it in such a manner that when downstream message data is transmitted toward a plurality of terminal devices, the above-described reception acknowledgment data is added to the downstream message data and the resultant data is transmitted to the plurality of terminal devices.