Abstract: A continuously variable transmission belt includes rings each superimposing annular component pieces on each other's inner and outer peripheries, and plural elements attached to the rings side by side in a circumferential direction. Each element includes a neck portion. The rings are disposed on opposite sides of the neck portion. The elements contact a driving pulley and a driven pulley. A lubrication oil discharge mechanism discharges out a lubrication oil in at least one of a gap between the component pieces, and a gap between each ring and the elements. A function of discharging the lubrication oil present in a region remote from the neck portion is higher than a function of discharging the lubrication oil present in a region near the neck portion. Thereby, the rings to which the elements are attached or the component pieces of the rings restrain decline in the centering characteristic in the width direction.

Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.

Abstract: In an information processing device according to an embodiment, a generating unit generates a descriptor including information indicating an area in a storage unit and state information indicating a state of an entry in which the information indicating the area is stored, and an update unit updates the state information according to at least one of writing and reading of data to the area indicated in the entry selected according to the state information by the input/output unit. The generating unit generates the descriptor in advance before at least one of writing and reading of data to/from the storage unit is started.

Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.

Abstract: In an embodiment, a key sharing device connects to external devices with paths, and includes a key storage unit, a determining unit, a first generating unit, an encrypting unit, and a first transmitting unit. The key storage unit stores cryptographic keys to be shared. The determining unit determines a path for reaching a first device via a second device when a number of the cryptographic keys out of the cryptographic keys stored in the key storage unit is a predetermined threshold or smaller. The first generating unit generates an initial key that is a new cryptographic key to be shared with the first device. The encrypting unit encrypts the initial key by using the cryptographic key. The first transmitting unit transmits the encrypted initial key to the second device with addressing the first device as destination.

Abstract: In general, according to one embodiment, a communication node includes a key synchronization controller and an application communicator. The key synchronization controller controls synchronization of an application key on the basis of a node-based signaling process and a session-based signaling process, where the former process is for starting or ending exchanging of an application key between a correspondent node and the communication node and the latter process is for synchronizing a rule for assignment of the application key to a session with the correspondent node, the session shared with the correspondent node. The application communicator provides the application key in accordance with the rule, the key for use by an application having the session.

Abstract: According to one embodiment, a communication method including acquiring an application key from a key-sharing network, determining a key use of the application key, and performing encryption communication by using the application key according to the determined key use.

Abstract: According to an embodiment, a communication apparatus includes a finding unit; a negotiating unit; and a communicating unit. The finding unit is configured to, in response to a request from an application that makes use of key information, find out a key generating device that generates the key information. The negotiating unit is configured to perform a negotiation operation with respect to the key generating device to determine conditions for key information that is to be generated. The communicating unit is configured to receive, from the key generating device, the key information that is generated based on the conditions determined in the negotiation operation, and send the received key information to the application.

Abstract: A system and method are provided by which a wireless network service provider is able to provide and maintain a high level of quality of service for terminals in the corresponding network, by overcoming problems that result in a diminished quality of service, including handoff delays as terminals move between cells in a network and the uncertainly as to which cell the individual terminals are moving to as they roam within the network. Providing and maintaining a high level of quality of service in a wireless network includes recording a history of movements of a terminal within the wireless network, analyzing the movements of the terminal within the wireless network to compute a probability distribution of the terminal's target location, and allocating network resources, including bandwidth and priority scheme, to the terminal based on the probability distribution for the terminal.

Abstract: According to an embodiment, a communication device is connected to a key generating device which generates an encryption key. The communication device includes a querying unit, an encryption processor, and a selecting unit. The querying unit is configured to send a query to the key generating device about capability information which indicates capability of the key generating device to generate the encryption key. The encryption processor is configured to implement a plurality of encryption functions. The selecting unit is configured to select, from among the plurality of encryption functions, an encryption function according to the capability information. The encryption processor implements the encryption function thus selected.

Abstract: According to an embodiment, a communication apparatus includes a key storage unit configured to store therein a cryptographic key; a receiving unit configured to receive a message; an analyzing unit configured to analyze whether the message includes an access request for the cryptographic key; a generating unit configured to, when the message includes the access request, generate request information used to request an access to the cryptographic key requested by the access request; and an access controller configured to control the access to the cryptographic key based on the request information.

Abstract: According to an embodiment, a key generating device connected to an external device includes a generating unit configured to generate an encryption key; a first communicating unit configured to transmit and receive the encryption key to and from the external device; a storage unit configured to stores therein state information indicating a communication state with respect to an application using the encryption key; and a controller configured to make a control of changing a frequency at which the generating unit generates the encryption key or a frequency at which the first communicating unit transmits and receives the encryption key according to the state information.

Abstract: A cooling structure includes a rotating electrical machine (1) that has a stator (3), the stator including plural split cores (4) annularly combined, and a shrink-fitted ring (5) mounted to the outer periphery of the plural split cores (4) for integrating the plural split cores (4), and a case (10) that accommodates the rotating electrical machine (1) therein, the shrink-fitted ring (5) includes a cylindrical portion (6), and a flange portion (7) that is provided at one end of the cylindrical portion (6), the case (10) includes an accommodating portion (11) which has an inner peripheral wall (11a) whose inner diameter is larger than the outer diameter of the cylindrical portion (6) and smaller than the outer diameter of the flange portion (7), and in which accommodates the stator (3), a first wall face (12) extending outward in the radial direction from the end of the inner peripheral wall (11a) where the flange portion (7) is arranged, the flange portion (7) being mounted to the first wall face (12), and a s

Abstract: A power semiconductor module includes semiconductor elements of a first system constituting each of arms in a circuit of the first system, semiconductor elements of a second system constituting each of arms in a circuit of the second system, a plurality of DC electrode conductors including a common DC electrode conductor joined to the semiconductor elements of the first and second systems, and a plurality of AC electrode conductors joined to the respective semiconductor elements of the first and second systems. Each of the semiconductor elements of the first and second systems is interposed between the DC electrode conductor and AC electrode conductor.

Abstract: In an information processing device according to an embodiment, a generating unit generates a descriptor including information indicating an area in a storage unit and state information indicating a state of an entry in which the information indicating the area is stored, and an update unit updates the state information according to at least one of writing and reading of data to the area indicated in the entry selected according to the state information by the input/output unit. The generating unit generates the descriptor in advance before at least one of writing and reading of data to/from the storage unit is started.

Abstract: In an embodiment, a key sharing device connects to external devices with paths, and includes a key storage unit, a determining unit, a first generating unit, an encrypting unit, and a first transmitting unit. The key storage unit stores cryptographic keys to be shared. The determining unit determines a path for reaching a first device via a second device when a number of the cryptographic keys out of the cryptographic keys stored in the key storage unit is a predetermined threshold or smaller. The first generating unit generates an initial key that is a new cryptographic key to be shared with the first device. The encrypting unit encrypts the initial key by using the cryptographic key. The first transmitting unit transmits the encrypted initial key to the second device with addressing the first device as destination.

Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.

Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.

Abstract: In some illustrative embodiments, a novel system and method is provided that can, for example, extend concepts of pre-authentication (such as, e.g., IEEE 802.11i pre-authentication) so as to operate across networks or subnetworks (such as, e.g., IP subnets). In preferred embodiments, a novel architecture includes one or both of two new mechanisms that substantially improve, e.g., higher-layer handoff performance. A first mechanism is referred to as “pre-configuration,” which allows a mobile to pre-configure higher-layer information effective in candidate IP subnets to handoff. A second mechanism is referred to as “virtual soft-handoff,” which allows a mobile to send or receive packets through the candidate IP subnets even before it is actually perform a handoff to any of the candidate IP subnets.

Abstract: The present invention provides improved quality of service through data transmission rate control in a network. Data rate control may be in the downlink or uplink direction and may be statically or dynamically configured. Rate control may be implemented at varying points in the network including but not limited to at the wireless host, at the access point, at a separate device such as a server or at a separate location within the network. In one example of the present invention, a rate enforcement function is provided for identifying data packets to be enforced or identifying mapping between each packet and corresponding access point. Also, a rate decision function is also provided for determining the data rate to be enforced for each of the access points or each of the wireless hosts.