571 results about "Unavailability" patented technology

A data center (14) receives a request (22) for content from a browser (12) on a client (11). The data center determines whether the requested content is available at the data center. The content is available when the content is both present at the data center and current. The content may be expired and marked as non-available in response to an expiration command (24). When the requested content is available at the data center, the data center returns the requested content to the data center. When the requested content is locally unavailable at the data center, the requested content is retrieved from an origin server (18). The retrieval of the content from the origin server may be delayed based on the processing load at the origin server. When retrieval of the content is delayed, the request is prioritized and placed in a queue for handling by the origin server based on the priority of the request. Also, when retrieval of the content is delayed, a status page may be communicated to the browser to inform a user of the delay and provide alternate content (139) and status information related to the request determined as a function of the request or the current state of the origin server.

A novel and useful apparatus for and method of coordinating the allocation of transmission and reception availability and / or unavailability periods for use in a communications device incorporating collocated multiple radios. The mechanism provide both centralized and distributed coordination to enable the coordination (e.g., to achieve coexistence) of multiple radio access communication devices (RACDs) collocated in a single device such as a mobile station. A distributed activity coordinator modifies the activity pattern of multiple RACDs. The activity pattern comprises a set of radio access specific modes of operation, (e.g., IEEE 802.16 Normal, Sleep, Scan or Idle modes, 3GPP GSM / EDGE operation mode (PTM, IDLE, Connected, DTM modes), etc.) and a compatible set of wake-up events, such as reception and transmission availability periods. To prevent interference and possible loss of data, a radio access is prevented from transmitting or receiving data packets while another radio access is transmitting or receiving. In the event two or more RATs desire to be active at the same time, the mechanism negotiates an availability pattern between the MS and a corresponding BS to achieve coordination between the RATs.

Methods, systems, and articles of manufacture consistent with the present invention provide an improved query server that overcomes the shortcomings of existing domain name searching techniques by performing a multitude of searches simultaneously, transparent to the user. Specifically, the improved query server searches for existing domain name records in various domains and then displays the results in a formatted manner, thus eliminating the need for a user to perform individual searches.

The System Select feature provides user selectable modes of operation in a mobile communication station, which allow certain fall-back options when a preferred system may not be available, but still steers the bulk of the system selection operations to preferred systems. In a first user selected mode, the mobile station scans for a broadcast system identifier or "SID" that matches an identifier of a preferred system stored in memory of the station. The second mode allows the user at least one option, which involves selection of a less than preferred system, but with this mode, the mobile station will still make a first attempt to register with a system having a SID matching one stored in memory of the station. A preferred implementation offers the user four system selection options. Options based on stored identifiers include an option to select only the home system, and an option to select from a preferred roaming list (PRL) if the home system is unavailable. In the other two options, if the scanning operations for the home system and systems on the PRL are ineffective, one option involves scanning a band corresponding to that used by the home system. In contrast, the other option involves scanning a band other than that used by the home system. The System Select programming, however, limits the operation in the last optional setting, for example to a set time period or until completion of one call. The preferred embodiment facilitates a substantially one-rate service, where the service provider charges the one rate for all calls through the home system, all systems on the PRL list and any system found during a scan of the home-system band.

Business applications running on a content delivery network (CDN) having a distributed application framework can create, access and modify state for each client. Over time, a single client may desire to access a given application on different CDN edge servers within the same region and even across different regions. Each time, the application may need to access the latest “state” of the client even if the state was last modified by an application on a different server. A difficulty arises when a process or a machine that last modified the state dies or is temporarily or permanently unavailable. The present invention provides techniques for migrating session state data across CDN servers in a manner transparent to the user. A distributed application thus can access a latest “state” of a client even if the state was last modified by an application instance executing on a different CDN server, including a nearby (in-region) or a remote (out-of-region) server.

Methods, systems, and computer readable media system for collecting and distributing session initiation protocol (SIP) event watcher entity subscription information in a communications network are disclosed. According to one aspect, the method includes receiving, at a first notifier server from a watcher entity client, a first subscription request for SIP event information associated with one or more watched entity clients. The method also includes receiving, at a watcher information (WINFO) entity, SIP event subscription information that includes an identifier indicating that the first notifier server serves the watcher entity client, storing the SIP event subscription information in the WINFO entity, detecting the unavailability of the first notifier server. The method further includes sending an instruction message, based on the identifier in the stored SIP event subscription information, to direct the watcher entity to generate a second subscription request associated for the SIP event information.

The present invention provides a solution for resource sharing (e.g., inter-Cloud) within a Cloud-computing environment. One objective of the present invention is to better utilize idle public or private Cloud infrastructures and improve the availability of Cloud services by allowing different Cloud service providers to virtually combine their services and infrastructures. In the event that there is not enough capacity for a single Cloud service provider to manage its workload, the workload may be shifted to additional infrastructures within the Cloud. The result of the workload shift may reduce the unavailability of Cloud services to the Cloud end-user by allowing another Cloud service provider to temporarily handle the workload. Based on the resource sharing activities, compensation (e.g., credits / tokens) can be exchanged between the participating Cloud providers to reflect their participation in the resource exchange.

A method for synchronizing, using at least one processor, a physical machine with a virtual machine while the virtual machine is operational in memory is disclosed. In one embodiment, the method includes monitoring a physical machine that utilizes a physical disk for storing computer data, consolidating a virtual disk with modifications to the physical disk, wherein the modifications to the physical disk are replicated on the virtual disk in response to unavailability of the physical machine, operating a virtual machine that utilizes the virtual disk for storing the computer data and migrating the virtual machine, using the virtual disk, to a computer.

A system, method and computer readable medium for providing a standby file system with snapshot feature is disclosed. A first snapshot of a primary file system is generated. Next, a standby file system restores the first snapshot of the primary file system in the standby file system and a snapshot of the standby file system is taken. Then, a second snapshot of the primary file system is taken and a data set capturing the differences between the first snapshot of the primary file system and a previous data set of the primary file system is generated. Subsequently, the data set is applied to the standby file system. Upon unavailability of the primary file system, the standby file system is initialized as the new primary file system. Upon recovery of the old primary file system, the old primary file system is initialized as a new standby file system.

A classification mechanism to allow selected classes of multicast entries to be acted upon in a chosen order of priority during multicast distribution tree convergence is provided. Such prioritization allows for the designation of customers, networks or multicast groups to receive faster convergence of multicast distribution trees to modified multicast distribution trees in response to unavailability of an upstream router, and in performing other multicast-related tasks (e.g., PIM joins and prunes). One aspect of the present invention provides for multicast entries (also called multicast states) that are at a same priority level to be acted upon in a fair manner, thereby avoiding having certain multicast entries and their associated users from being acted upon consistently last.

A method and system for utilizing historical data in an asset management environment are disclosed. According to one embodiment, a method generates an asset information report from a database, wherein the asset information report comprises at least a portion of real-time information about the asset when the real-time information about the asset is available. In addition, the asset information report is augmented by extrapolating at least a portion of historical asset information stored at the database when at least a portion of the real-time information is not available.

One illustrative method for use by a host server in pushing messages to a mobile communication device involves the steps of causing a message to be sent to a relay network for delivery to the mobile communication device through one of a plurality of wireless communication networks which are communicatively coupled to the relay network; receiving, from the relay network, a result message when the mobile communication device is unavailable to receive the message through the wireless communication network, the result message comprising a message identifier which uniquely corresponds to the message; maintaining storage of the message in memory accessible by the host server after the result message is received; receiving, from the relay network, a status message which indicates that the mobile communication device is available to receive the message when the mobile communication device is available to receive the message through the wireless communication device; and causing the message to be sent again to the relay network for delivery to the mobile communication device in response to receiving the status message. During the unavailability of the mobile device, the relay network refrains from maintaining storage of the message in memory of the relay network.

A method and system for communicating a display image. The method comprises (a) compressing, by a first application on a first processor, initial updates; (b) determining, by the first application, availability of a second processor comprising compression hardware not in the first processor; (c) determining, by a second application on the first processor, a requirement to compress, by the second processor, future image updates; (d) compressing, by the second processor a first future image update; (e) initiating, by the first application on the first or a third processor, compressing by the second processor of a second future image update; (f) determining, by the first application, an unavailability of the second processor; (g) compressing, by the first application subsequent future image updates, including the second future image update, to generate compressed updates; and (h) transmitting the compressed initial updates, the compressed first update, and the compressed updates to a remote computer.

A novel and useful apparatus for and method of managing paging availability of a mobile station in a wireless communications network. The paging availability mechanism of the present invention is able to achieve a substantial amount of power saving by modifying mobile station access to paging intervals. The mechanism dynamically controls access to the wireless network after unavailability periods when mobile stations enter into idle mode. Paging listening intervals for one or more mobile stations are scheduled and synchronized in accordance with the values of one or more parameters or metrics such as link quality. In one embodiment, this is achieved by the mobile station modifying the paging listening intervals access pattern received from the base station. Depending on the one or more parameters or metrics, one or more paging intervals may be skipped thus reducing the power consumption of the mobile station.

In some embodiments, storage devices, such as a storage drive or a storage node, in an array of storage devices may be reintroduced into the array of storage devices after a period of temporary unavailability without fully rebuilding the entire previously unavailable storage device.

An apparatus for reducing data unavailability time after a loss of main power in a storage controller is described. The controller backs up its volatile memory containing posted-write data to a non-volatile memory upon detecting a loss of main power. The controller continues to provide battery power to the volatile memory to sustain the posted-write data. If the battery is able to supply power to the volatile memory until main power is restored, the controller foregoes restoring the posted-write data to the volatile memory from the non-volatile memory. By not incurring the restore time, which may be substantial if the volatile memory is large since read rates from volatile memories are typically slow, the data unavailability time is reduced. The selective restore feature is user-disableable and also includes a brown-out timer for allowing a user to specify how long to battery-power the volatile memory if the feature is enabled.

A cellphone program or service is disclosed to allow a user to set up an instant text reply for both incoming voice calls and SMS messages from other cellphone users via an SMS message (hereinafter, Instant Text Reply) stating the reason for the user's unavailability. In use, a cellphone user can create, save, and select various outgoing SMS messages from their cellphone user interface. The cellphone user then selects the desired instant text reply message that will be automatically sent to other cellphone users attempting to contact them for a predetermined time period. At the end of the time period for operation of the Instant Text Reply, the operation of the cellphone is returned to its ordinary function. The invention can be implemented with a program on the cellphone or at the carrier level. When used in combination with a carrier program, the cellphone user can optionally turn off their cellphone.

A system and method routes messages based on an intended recipient's availability to receive messages. Each network user's current status is determined by tracking when the user activates and deactivates an auto-reply feature. The user's current status, return date and alternate contact(s) are specified in the auto-reply and stored and updated on a user status server which periodically communicates to each user the current status information for each contact listed in that user's address book. When the current status information indicates that the intended recipient is unavailable, message routing options are presented to the sender. These options include sending the message to the user regardless of the intended recipient's current unavailability, not sending the message at all, routing the message to at least one specified alternate contact, sending the message to the intended recipient while sending a copy of the message to the alternate contact.

Improved techniques and systems for accommodating TLB shootdown events in multi-processor computer systems are disclosed. A memory management unit (MMU) having a TLB miss handler and miss exception handler is provided. The MMU receives instructions relative to a virtual address. A TLB is searched for the virtual address, if the virtual address is not found in the TLB, secondary memory assets are searched for a TTE that corresponds to the virtual address and its associated context identifier. The context identifier is tested to determine if the TTE is available. Where the TTE is available, the TLB and secondary memory assets are updated as necessary and the method initiates memory access instructions. Where the TTE is unavailable, the method either resolves the unavailability or waits until the unavailability is resolved and then initiates memory access instructions, thereby enabling the desired virtual address information to be accessed.

An instant messaging application intelligently infers a user's unavailability from one or more indicia which include the user's electronic calendar. Preferably, the instant messaging application may report not only that a user is unavailable, but also give a reason for inferring unavailability, in order to provide other users with additional potentially useful information. Preferably, the user may specify which indicia and which parameters may be used to infer his unavailability in an editable profile. When another user requests status, this value is returned by the server. An intelligent instant messaging application as described herein provides other users with more accurate and complete availability information.

A backup public switched telephone network (PSTN) line is provided to a broadband network connection by detecting unavailability of the broadband network connection and automatically connecting local site wiring to the PSTN line responsive to detecting unavailability of the broadband network connection and disconnecting local site wiring from the PSTN line if unavailability is not detected.

An instant messaging application intelligently infers a user's unavailability from one or more indicia which include the user's electronic calendar. Preferably, the instant messaging application may report not only that a user is unavailable, but also give a reason for inferring unavailability, in order to provide other users with additional potentially useful information. Preferably, the user may specify which indicia and which parameters may be used to infer his unavailability in an editable profile. When another user requests status, this value is returned by the server. An intelligent instant messaging application as described herein provides other users with more accurate and complete availability information.

A method and system for delegation of service procurement by a temporary agent. In one embodiment, in response to an event, a first entity is automatically identified to adjust travel or meeting plans pre-established for one or more group members. The identified first entity adjusts the pre-established travel or meeting plans for one or more members, and notifies one or more group members of the adjustment to the pre-established travel or meeting plans. In one embodiment, the identified first entity is at least one of the one or more group members, not one of the one or more group members, or a software agent. In one embodiment, in response to an unavailability of the first entity, a predetermined alternative first entity is identified to adjust the pre-established travel or meeting plans. In one embodiment, in response to receiving a decline from one or more group members, the one or more group members are presented with one or more second travel or meeting adjustments. In one embodiment, the adjusting of the pre-established travel or meeting plans is based at least in part on a profile of one or more group members.

A system includes an input unit (2) to which failure information corresponding to failure modes of constituents indicating software and hardware, a system configuration information and a standard value of system availability are inputted, a producing unit (32) producing a fault tree based on the system configuration information, a calculating unit (34) calculating unavailability corresponding to the failure modes based on a result of analyzing the failure information, and calculating system availability based on the calculated unavailability and the fault tree, a determining unit (35) determining whether the system availability meets the standard value, an extracting unit (36) extracting a basic event related to an increase in the system availability when the system availability is determined to be below the standard value, and resetting units (38, 39) resetting new unavailability and the like based on whether it is possible to reduce the unavailability of the extracted basic event.

A system for on demand session and resource management in an on demand platform for the delivery of on demand digital assets involve a session manager, a plurality of resource managers, and a resource manager redirector. These components cooperate to provide a distributed and scalable system for on demand session and resource management. Redirection of session and resource signaling messages among various session and resource managers by the resource manager redirector allows the unavailability of devices or resources to remain transparent to the session manager. The resource manager redirector redirects messages from the session manager as appropriate.

A data storage system with quorum-based commits sometimes experiences replica failure, due to unavailability of a replica-hosting node, for example. In embodiments described herein, such failed replicas can be quarantined rather than deleted, and subsequently such quarantines can be recovered. The teachings hereof provide data storage with improved fault-tolerance, resiliency, and data availability.

A system and method routes messages based on an intended recipient's availability to receive messages. Each network user's current status is determined by tracking when the user activates and deactivates an auto-reply feature. The user's current status, return date and alternate contact(s) are specified in the auto-reply and stored and updated on a user status server which periodically communicates to each user the current status information for each contact listed in that user's address book. When the current status information indicates that the intended recipient is unavailable, message routing options are presented to the sender. These options include sending the message to the user regardless of the intended recipient's current unavailability, not sending the message at all, routing the message to at least one specified alternate contact, sending the message to the intended recipient while sending a copy of the message to the alternate contact.

Techniques are provided to permit a gradual or phased migration of a computing environment including groups of mobile clients to a new version of an application program such that the unavailability or downtime of any mobile client is minimized. In one general aspect, the techniques permit a mobile client to connect with an application server of the corresponding version for synchronization whether the mobile client is operating on the starting-version or the new or target-version of the application program and migrates the data between the two versions of the application program. A migration bridge between the starting-version and the target-version of the application program synchronizes the data in the two versions of the application program.