Abstract: A context-aware service recommender system receives current user context and recommends a list of browser-based services to a user on a mobile devices. A user's mobile device receives context events from smart environments in which the mobile device is operating. Data about the context events is relayed to a service recommendation server. The server develops recommendations based on the context and other factors, and relays information about the recommended services to the mobile device. As each recommended service is selected or ignored by the user of the mobile device, the device sends implicit feedback with this information to the service recommendation server for use in subsequent recommendations.

Abstract: Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.

Abstract: In one aspect of the invention, a configurable reliable messaging system is provided. The configurable reliable messaging system comprises a communication subsystem capable of configurably transmitting and receiving a message across a network using at least one of a plurality of network links, a plurality of internet protocols and a plurality of transport protocols. The configurable reliable messaging system also comprises a reliability subsystem capable of configurably logging the message, detecting a plurality of failures, notifying a remote entity interconnected with the configurable reliable messaging system via the network of the plurality of failures, and recovering from the plurality of failures. In addition, the configurable reliable messaging system comprises a control module capable of configuring the communication subsystem and the reliability subsystem based on a set of input parameters.

Abstract: A method for representing an omni directional-like image by capturing an omni-directional-like image and determining a representation format that is commonly applicable to any image acquisition system that is able to capture the omni-directional-like image. The captured omni-directional-like image is mapped onto the determined representation format.

Abstract: A communications protocol in a system such as an IEEE 802.11 wireless LAN multi-hop system providing transmission scheduling information is disclosed. The transmission scheduling is formatted within a CF-Poll+Data+SIPS data frame transmitted by the point coordinator (PC) which may be any one of the access point (AP) nodes transmitting in turn as dictated by the scheduling parameters within the scheduling information parameter set (SIPS). The SIPS comprises an offset field, the time left for the presently functioning PC; a delay field, where an AP delays functioning as a PC; and the interval field, the time allowed for an AP to function as a PC. The subsequent scheduling of assigned transmission slots by providing boundaries for the transmission frames through SIPS eliminates collisions resulting from multiple units transmitting simultaneously, thereby supporting interactive media and voice communications on WLAN multi-hop systems.

Abstract: In one aspect of the invention, a method of dynamically switching among a plurality of fault tolerance schemes is provided. The fault tolerance schemes are associated with a fault tolerance mechanism that executes in a distributed system. The method comprises obtaining a wait time of at least one user interface event occurring in the distributed system. The wait time includes at least one of a communications time, a service time and a fault tolerance time. The method further comprises determining whether a mean of the wait time is greater than a predetermined mean wait time threshold. The method also comprises determining whether the communications time, the service time and the fault tolerance time are mutually independent when the mean of the wait time is greater than the predetermined mean wait time threshold.

Abstract: A method of connecting a client device with a router in a wireless communication network is disclosed. The method comprises the steps of establishing a link layer connection with a first access point with a first wireless network interface; detecting a second access point with a second wireless network interface; establishing a link layer connection with a second access point with a first wireless network interface; and determining the compatibility between the client device with an access router associated with the second access point.

Abstract: This invention relates generally to a method of associating an IP address with a link layer address in a wireless communication network. The method comprises the steps of assigning an IP address to a plurality of link layer addresses; establishing a link layer connection with a first wireless network interface on the IP address; and establishing a link layer connection with a second wireless network interface on the IP address. The method of the present invention enables the increased downloading of data to a client device by aggregating data links associated with an IP address. The method also enables the bi-casting of data to a client device from an IP address associated with a plurality of link layer addresses of wireless communication device. Finally, the invention enables failure recovery by enabling downloading to a second link layer address if a communication link to a first link layer address deteriorates.

Abstract: A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to energy of the frame of data, determining a peak energy estimate for the frame, determining an energy threshold based on the peak energy estimate of the frame and comparing the value related to energy of the frame of the data with the energy threshold to control time-scale compression of the audio data.

Abstract: A method, system, and business model are disclosed for supporting handover between a mobile host and a corresponding node located in a heterogeneous network. Handover paths are established to accommodate a plurality of quality of service properties. Admission control is performed that considers the established handover paths and an established first reservation path. Gateways are contacted to determine a handover path to use. The determined handover path is used to support vertical handover. A second reservation path is established while maintaining the first reservation path and the handover path.

Abstract: In one aspect of the invention, a method of dynamically switching among a plurality of fault tolerance schemes is provided. The fault tolerance schemes are associated with a fault tolerance mechanism that executes in a distributed system. The method comprises obtaining a wait time of at least one user interface event occurring in the distributed system. The wait time includes at least one of a communications time, a service time and a fault tolerance time. The method further comprises determining whether a mean of the wait time is greater than a predetermined mean wait time threshold. The method also comprises determining whether the communications time, the service time and the fault tolerance time are mutually independent when the mean of the wait time is greater than the predetermined mean wait time threshold.

Abstract: A data processing method includes, at a client device, retrieving client state information from a remote location associated with the client device and using the client state information for access of network locations. The data processing method further includes storing updated client state information at the remote location upon completion of the access of the network locations. The remote location forms a personal cookie repository where cookies may stored for subsequent use by any device of a user.

Abstract: A NSP network is disclosed for providing a platform service for providing data communication security in an IP-based communications network. The platform service includes connections to various private networks, a subscriber data management unit for managing information about the mobile terminals using the network, and a platform unit. The platform unit determines from the subscriber data management unit the status of the mobile terminals requesting connections to private networks and the status of the mobile terminals for which private networks target for connection. The platform unit includes applications for querying the subscriber data management unit for subscriber status, applications to command the transmission of authorization data, and applications to provide secure virtual private network communication lines for connecting the mobile terminals and the private networks.

Abstract: When copies of digital are made or after use of the digital data, the quality of the digital data is reduced or degraded. The degradation may be in any way suitable to the nature of the digital data. In one embodiment, the content provider which originates the digital data may specify a degradation policy or degradation specification model for the digital data. When the digital data is copied or moved, the copy is degraded according to this specified policy or model. In this manner, the content provider can control the extent to which the end user can copy the material. The end user can make copies limited in number only by the degradation of the digital data.

Abstract: An optimization algorithm is provided for linear prediction based speech coding systems. The optimization algorithm minimizes the error between original speech samples and synthesized speech samples. Optimized linear prediction coefficients are computed directly from a system difference equation without converting the coefficients into the root-domain.

Abstract: A network selection system that includes a mobile terminal in communication with a first network, a second network in communication with the first network and an application layer triggering mechanism that determines which one of a plurality of triggers is required in a certain set of circumstances to provide a particular application.

Abstract: A communication system includes a communication network, a resource-mediating server coupled with the network and one or more communication devices. The resource mediating server is configured to manage information about available resources necessary for execution of a task by the communication device. The communication device is configured for communication with the network and for executing the task using necessary resources accessed over the network, task execution being adapted in response to the information about available resources.

Abstract: Methods are provided for encoding and decoding a digital message between a sender and a recipient in a system including a plurality of private key generators (“PKGs”). The PKGs include at least a root PKG and n lower-level PKG in the hierarchy between the root PKG and the recipient. A root key generation secret is selected and is known only to the root PKG. A root key generation parameter is generated based on the root key generation secret. A lower-level key generation secret is selected for each of the n lower-level PKGs, wherein each lower-level key generation secret is known only to its associated lower-level PKG. A lower-level key generation parameter also is generated for each of the n lower-level PKGs using at least the lower-level key generation secret for its associated lower-level private key generator. The message is encoded to form a ciphertext using at least the root key generation parameter and recipient identity information associated with the recipient.

Abstract: A communication system includes one or more independent communication networks. Each network includes one or more resource management devices, resources managed by the resource management device, and one or more resource arbitration servers. The communication system further includes a communication device adapted for communication on each of the one or more communication networks.

Abstract: A method and system are disclosed for an operator to monitor access network services available to an end device, where the end device communicates in a heterogeneous network environment. The heterogeneous access networks can include networks such as a cellular network, a satellite network, a local area network (LAN) and a Bluetooth network. Different access networks may be available to the end device based on a location of the end device and a time that the network is being accessed. A subscriber to the system, or user of the end device, desires access to a particular network depending on the available access networks. To determine which access networks are available, an operator instructs the end device to determine available access networks located with the heterogeneous network environment. The access network information is collected from at least one node within the heterogeneous network, and made available to the operator.