Abstract: According to one embodiment, a power transmission and reception system includes a power transmitter and a power receiver. The power transmitter includes: a power transmission module configured to wireless-transmit power to the power receiver; and a first wireless communication module configured to perform wireless communication with the power receiver. The power receiver includes: a power reception module configured to receive the power transmitted from the power transmission module; and a second wireless communication module configured to perform wireless communication with the first wireless communication module using the received power. The second wireless communication module is configured to perform wireless communication while the power reception module is receiving the power.

Abstract: According to an embodiment, a wireless communication device includes a first wireless communication section, a wireless power receiving section and a wireless control section. The first wireless communication section is configured to transmit and receive a first wireless signal. The wireless power receiving section is configured to receive power by a second wireless signal. The wireless control section is configured to control the first wireless communication section according to a wireless power reception state of the wireless power receiving section. The wireless control section activates the first wireless communication section after wireless power reception by the wireless power receiving section is started.

Abstract: According to one embodiment, a power transmission and reception system includes a power transmitter and a power receiver. The power transmitter includes a power transmission module configured to wireless-transmit power to the power receiver; and a first wireless communication module configured to perform wireless communication of data frame having data with the power receiver. The power receiver includes a power reception module configured to receive the power transmitted from the power transmission module; and a second wireless communication module configured to perform wireless communication of the data frame with the first wireless communication module using the received power. The second wireless communication module is configured to perform wireless communication while the power reception module is not receiving the power.

Abstract: A client terminal for conducting wireless communications with an access point apparatus having apparatus unique information. The client terminal includes: an acceptance unit that accepts entry of the apparatus unique information; a conversion unit that converts the apparatus unique information entered through the acceptance unit into temporary connection information; a temporary connection establishing unit that establishes temporary connection with the access point apparatus to acquire main connection information required for main connection with the access point apparatus based on the temporary connection information; a reception unit that receives the main connection information from the access point apparatus; and a main connection establishing unit that establishes main connection with the access point apparatus based on the main connection information.

Abstract: A wireless communication apparatus includes: a communication unit that communicates with a communication equipment on a wireless network; and a control unit that controls the communication unit to transmit a beacon frame of a radio signal carrying at least equipment identification information to the communication equipment and to transmit content information to the communication equipment when a connection request is received from the communication equipment.

Abstract: In the disclosed information delivery scheme for delivering WWW information provided by information servers on the Internet to mobile computers connected to the Internet through a wireless network, a plurality of cache servers capable of caching WWW information provided by the information servers are provided in association with the wireless network. The cache servers can be managed by receiving a message indicating at least a connected location of a mobile computer in the wireless network from the mobile computer, selecting one or more cache servers located nearby the mobile computer according to the message, and controlling these one or more cache servers to cache selected WWW information selected for the mobile computer, so as to enable faster accesses to the selected WWW information by the mobile computer.

Abstract: A communication scheme for supporting data transfer to a visited site of a mobile terminal which moves across a private network operated by a private address system and an Internet operated by a global address system is disclosed. When the mobile terminal has moved from the first network to the second network, packets destined to an original home address of the mobile terminal on the first subnet are transferred from the first router device in the first subnet by setting an address of the first interface of a packet relay device as a care-of address of the mobile terminal. Then, the packets received by the packet relay device from the first router device at the first interface are transferred to the second router device in the second subnet through the second interface of the packet relay device, and the packets received by the second router device from the packet relay device are transferred to a current location address of the mobile terminal.

Abstract: A mobile supporting router device for realizing the handoff control associated with the moving in high speed is forms by at least one first interface connected with radio base stations, each capable of accommodating at least one mobile terminal; at least one second interface connected with a wire network; an information exchanging unit for exchanging a routing protocol on a network layer, through the second interface; a memory unit for storing information regarding a routing on the network layer based on the routing protocol exchanged by the information exchanging unit; a transfer unit for transferring datagram through the first interface according to the information regarding the routing on the network layer stored in the memory unit; a moving detection unit for detecting a moving of the mobile terminal among the radio base stations; and an information updating unit for updating the information regarding the routing on the network layer stored in the memory unit when the moving of the mobile terminal is dete

Abstract: A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.

Abstract: A client terminal for conducting wireless communications with an access point apparatus having apparatus unique information. The client terminal includes: an acceptance unit that accepts entry of the apparatus unique information; a conversion unit that converts the apparatus unique information entered through the acceptance unit into temporary connection information; a temporary connection establishing unit that establishes temporary connection with the access point apparatus to acquire main connection information required for main connection with the access point apparatus based on the temporary connection information; a reception unit that receives the main connection information from the access point apparatus; and a main connection establishing unit that establishes main connection with the access point apparatus based on the main connection information.

Abstract: A wireless communication apparatus includes: a communication unit that communicates with a communication equipment on a wireless network; and a control unit that controls the communication unit to transmit a beacon frame of a radio signal carrying at least equipment identification information to the communication equipment and to transmit content information to the communication equipment when a connection request is received from the communication equipment.

Abstract: A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.

Abstract: In the disclosed information delivery scheme for delivering WWW information provided by information servers on the Internet to mobile computers connected to the Internet through a wireless network, a plurality of cache servers capable of caching WWW information provided by the information servers are provided in association with the wireless network. The cache servers can be managed by receiving a message indicating at least a connected location of a mobile computer in the wireless network from the mobile computer, selecting one or more cache servers located nearby the mobile computer according to the message, and controlling these one or more cache servers to cache selected WWW information selected for the mobile computer, so as to enable faster accesses to the selected WWW information by the mobile computer.

Abstract: In the disclosed information delivery scheme for delivering WWW information provided by information servers on the Internet to mobile computers connected to the Internet through a wireless network, a plurality of cache servers capable of caching WWW information provided by the information servers are provided in association with the wireless network. The cache servers can be managed by receiving a message indicating at least a connected location of a mobile computer in the wireless network from the mobile computer, selecting one or more cache servers located nearby the mobile computer according to the message, and controlling these one or more cache servers to cache selected WWW information selected for the mobile computer, so as to enable faster accesses to the selected WWW information by the mobile computer.

Abstract: A transmitter capable of retransmitting an MPEG2-TS packet up to the reconstruction time limit and a receiver capable of requesting a retransmission of the packet up to the reconstruction time limit are provided by effectively using a waiting time of a packet to be reconstructed. The transmitting apparatus is provided with a timer portion 13 that shows a current time T in a wireless transmission, a time stamp adding portion 17 that adds a time stamp for specifying a time TS(N) for the packet N to be processed at a receiver side to the packet N, and a calculation portion 14 that calculates a packet transmission required time T_P during which the packet N is transmitted from a transmitter side and then received at the receiver side. In a case where a retransmission request of the packet N from the receiver side is issued, the time limit TL for the retransmitted packet to be received in time for the processing at the receiver side is calculated by the equation of TL(N)=TS(N)−T_P.

Abstract: A communication scheme for supporting data transfer to a visited site of a mobile terminal which moves across a private network operated by a private address system and an Internet operated by a global address system is disclosed. When the mobile terminal has moved from the first network to the second network, packets destined to an original home address of the mobile terminal on the first subnet are transferred from the first router device in the first subnet by setting an address of the first interface of a packet relay device as a care-of address of the mobile terminal. Then, the packets received by the packet relay device from the first router device at the first interface are transferred to the second router device in the second subnet through the second interface of the packet relay device, and the packets received by the second router device from the packet relay device are transferred to a current location address of the mobile terminal.

Abstract: A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.

Abstract: A mobile supporting router device for realizing the handoff control associated with the moving in high speed is forms by at least one first interface connected with radio base stations, each capable of accommodating at least one mobile terminal; at least one second interface connected with a wire network; an information exchanging unit for exchanging a routing protocol on a network layer, through the second interface; a memory unit for storing information regarding a routing on the network layer based on the routing protocol exchanged by the information exchanging unit; a transfer unit for transferring datagram through the first interface according to the information regarding the routing on the network layer stored in the memory unit; a moving detection unit for detecting a moving of the mobile terminal among the radio base stations; and an information updating unit for updating the information regarding the routing on the network layer stored in the memory unit when the moving of the mobile terminal is dete

Abstract: A communication scheme for supporting data transfer to a visited site of a mobile terminal which moves across a private network operated by a private address system and an Internet operated by a global address system is disclosed. When the mobile terminal has moved from the first network to the second network, packets destined to an original home address of the mobile terminal on the first subnet are transferred from the first router device in the first subnet by setting an address of the first interface of a packet relay device as a care-of address of the mobile terminal. Then, the packets received by the packet relay device from the first router device at the first interface are transferred to the second router device in the second subnet through the second interface of the packet relay device, and the packets received by the second router device from the packet relay device are transferred to a current location address of the mobile terminal.

Abstract: A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.