Dai Nippon Printing Co., Ltd.

Nec Corporation

Nec Infrontia Corporation

Hideki Kurokawa

Kazuki Yamada

Hirotaka Tsunoda

Koji Shimizu

Kenichiro Suto

Hiroshi Miyama

Kiyoshi Oguchi

Jun Fukuda

Takuya Yamazaki

Hitoshi Sekino

Masahiro Yoshikawa

Tsutomu Yoshinaka

Katsuhiko Hayashi

Shinichi Morimoto

Yasuhiro Mizukoshi

Takahiro Kakumaru

Youko Omori

Hatsuho Murata

Sadao Kimura

Takeshi Irie

Kenichi Yasuma

In a first control mode employed when a wired communication line is used as the backhaul, a wireless access point operates as follows. (1) The access point processes its own control packets for management by itself. (2) The access point communicates packets in which an information item for processing in a controller or a control server is added to user traffic from a client connected to the access point. (3) The access point conducts proxy processing for a control packet for management of a second wireless access point connected to the wireless communication side of the access point. (4) The access point compresses a control packet for management sent from a system controller to the second wireless access point to thereby achieve a frame conversion and then sends the packet to the wireless communication side. This resultantly reduces the traffic on the backhaul wireless communication line.

Wireless communication system, wireless access point, communication control method and computer-readable medium

A controller manages a connection of a wireless terminal to a wireless base station, and provides a source base station with information for connecting the wireless terminal by way of an anchor when the wireless terminal moves between wireless base stations. When devices on both sides of an anchor connected communication are wireless terminals connected to wireless base stations in said same wireless communications system, a wireless base station device switches a path such that data is transmitted/received between the wireless base stations to which the wireless terminals are connected on both sides of the anchor connected communication without intervention of the anchor.

Wireless communications system for controlling communication path

The traffic of wireless communication between wireless access points can be lowered without requiring a change in the access point to which an associated station belongs, to thereby efficiently use a band for the wireless communication. For this purpose, (1) a station sends a packet, and a wireless access point and a wired access point receives the packet; (2) the wired access point stores an identifier indicating proxy transmission in an ACK packet and then transmits the ACK packet, and (3) the wireless access point confirms the proxy processing identifier of the ACK packet from wired access point and stops delivery of packets to the backhaul. The wired access point delivers the packet to a destination of the packet.

A battery packet () comprises a battery case () formed by processing a battery case forming laminated sheet (), a batterycontained in the battery case (), and tabs () extending outside from the battery case (). The battery case forming laminated sheet () is formed by laminating a first base film layer (), i.e., an outermost layer, a metal foil layer (), and a heat-adhesive resin layer () in that order. The first base film layer () is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer () is an aluminum or copper foil. The heat-adhesive resin layer () is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.

Battery case forming sheet and battery packet

There is provided a wireless LAN access point capable of confirming and changing the setting using the IP communication for a target wireless LAN access point positively even when the IP address of the wireless LAN access point is forgotten. The wireless LAN access point, upon receipt of a probe request, transmits a probe response while at the same time starting to transmit a beacon frame required to be periodically transmitted. The wireless LAN access point starts the DHCP server therein at the same time that the process of associating the wireless LAN station is started. The DHCP server operates only for the wireless interface of the wireless LAN access point and the wireless LAN station associated by use of the maintenance SSID. The wireless LAN access point, upon complete association of the wireless LAN station with the local access point, leases the IP address to the wireless LAN station from the DHCP server in the particular local access point.

Wireless communication system, wireless LAN access point and settings confirmation/change method used therefor

In making a switching by hand-over, it takes a shorter time to redecide a radio base station of destination candidate to be connected that is capable of securing a required radio band, even in case the radio base station of destination to be switched to refuses the connection to a radio communication terminal. Therefore, the radio base station is configured to acquire the service band information of another radio base station, and notify the radio communication terminal of the radio base station information of a destination candidate to be connected to, based on the acquired service band information, in case of refusing a connection switching request from the radio communication terminal performing the hand-over.

Radio communication system

When a station is connected via a connector to an AC adapter, a controller may detect the event of connection between the station and the adapter and drive a suppression signal transmitter to send a suppression signal to suppress a handover by the station. The station may include a communication controller to fix, upon receipt of the suppression signal from the adapter, a wireless access point to which the station belongs. The station may enter a handover suppressed state in which the station does not conduct a handover to belong to another wireless access point so long as the station is connected to the adapter and is receiving the suppression signal. This may suppress the excessive handover and secure stable communication quality.

Wireless communication system, handover suppression apparatus, station, communication control method and computer-readable medium storing communication control program

The present invention increases, even while transmission rights are not being allocated to respective radio communication terminals, a maximum number of simultaneous connections within a communication capacity range of a communication frequency set in advance, reduce a waiting time, and increase speed of communication without causing an increase in cost for addition of radio base stations, replacement with a high-performance model, and the like. A radio base stationcalculates a guard time based on beacon transmission timing from a difference between reference times in beacon transmission, and transmission and reception time frame information based on beacon transmission timing of a radio base station. In other words, the radio base stationcalculates a guard time based on beacon transmission timing to prevent overlap of a transmission and reception time frame of transmission and reception to and from a radio communication terminalbelonging to the radio base station, and transmission and reception timing of transmission and reception to and from a radio communication terminalbelonging to the radio base station

Radio communication system, including a plurality of radio base stations, radio base station, radio communication method, and computer readable medium for radio communication system

A radio base stationis connected together with a multi-media serverand a multi-media terminal unitto a LAN or WAN linefor radio communication with radio mobile terminals-to-N. The radio mobile terminals-to-N can be switched between a power-saving mode of their part-time duty service and a normal mode of their full-time duty service. The radio base stationmanages the radio mobile terminals-to-N by executing discrimination as to whether they are in the power-saving mode of the part-time duty service operation or in the normal mode of the full-time duty service operation. and when the radio mobile terminals-to-N are in the power-saving mode of the part-time duty service operation, it acts as an agent to execute part of the processes to be executed in the radio mobile terminals-to-N.

Radio network system

There is provided a wireless communication system including a radio-signal base station, and a mobile wireless terminal operating in a power-saving mode in which the mobile wireless terminal intermittently receives packet signals, and in a normal mode in which the mobile wireless terminal regularly receives packet signals. When the radio-signal base station receives packet signals addressed to a mobile wireless terminal being in the power-saving mode, the radio-signal base station temporarily stores the received packet signals. The mobile wireless terminal requests the radio-signal base station to transmit the packet signals thereto, receives a part of the packet signal from the radio-signal base station, and, if the mobile wireless terminal judges that it would be necessary to carry out real-time communication for receiving entirety of the packet signals, the mobile wireless terminal transfers to the normal mode from the power-saving mode for receiving entirety of the packet signals.

Wireless communication system and method of making wireless communication

A power saving method in a wireless LAN system is disclosed for permitting a terminal station to promptly transition to a doze state irrespective of the presence or absence of data destined to the terminal station in a base station. Upon receipt of a PS-Poll signal from a terminal station subordinate to a base station for prompting a transmission of data destined to the terminal station, the base station transmits an ACK signal to the terminal station for indicating a successful reception of the PS-Poll signal. Further, the base station transmits a data frame including data destined to the terminal station when there is such data, or transmits an empty data frame when there is no data destined to the terminal station. Then, upon receipt of the data frame (including the empty data frame), the terminal station transmits an ACK signal to the base station, and then transitions to the doze state in which a transmission/reception function is made inoperative.

Power saving method in wireless LAN system for permitting terminal station to promptly transition to doze state by transmitting empty data frame

This invention provides a wireless network system including a logically or physically separated wired network, a wireless base station connected to the wired network, and a plurality of wireless mobile terminals which performs wireless communication with the wireless base station. The wireless base station used in this system includes a wired communication unit which is connected to a wired network, a wireless communication unit which performs wireless communication using one radio frequency, and a wired line/wireless channel bridging function. The wireless base station also includes a control unit which controls one wireless communication unit to send out packets storing pieces of information corresponding to a plurality of virtual wireless networks so as to form a plurality of virtual wireless networks.

Wireless base station, network system, communication method, and base station control program

A composite container having a barrier property and comprising a packaging material which comprises an inner surface layer, a barrier layer, and a base material layer wherein the barrier layer comprises one selected from nylon MXD 6 and a semi-aromatic polyamide resin, which is a copolymer comprising an aromatic polyamide forming component and an aliphatic polyamide forming component wherein the aromatic polyamide forming component comprises an aliphatic diamine and isophthalic acid and/or terephthalic acid, and the aliphatic polyamide forming component comprises a lactam or an aliphatic diamine, and an aliphatic dicarboxylic acid. The above packaging material may also comprise an inner surface layer having a barrier property and a base material layer wherein the inner surface layer having a barrier property comprises the above semi-aromatic polyamide resin.

Composite container having barrier property

A battery packet ( ) comprises a battery case ( ) formed by processing a battery case forming laminated sheet ( ), a battery contained in the battery case ( ), and tabs ( ) extending outside from the battery case ( ). The battery case forming laminated sheet ( ) is formed by laminating a first base film layer ( ), i.e., an outermost layer, a metal foil layer ( ), and a heat-adhesive resin layer ( ) in that order. The first base film layer ( ) is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer ( ) is an aluminum or copper foil. The heat-adhesive resin layer ( ) is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.

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Tokyo, Japan

Hideki Kurokawa