Research in Motion Corporation

Google Inc.

Blackberry Corporation

Simon Tyler Wise

Ian M Patterson

Allan David Lewis

Long Fei

David Halladay Schneider

Sven Koehler

Sahand Saba

Konstantinos Nikoloudakis

Danyao Wang

Alina Kushnir

Marc Plumb

David Bajar

David Paul Yach

Gary P Mousseau

David Clark

Allen David Lewis

Methods, systems, apparatus, including computer programs encoded on computer storage media, for reclaiming storage space in a storage environment. In one aspect, the method includes actions of aggregating data that is indicative of access to one or more data objects, determining a future storage cost associated with each of a plurality of data objects, determining an access window for each of the plurality of data objects, identifying a data object based on (i) the future storage cost that satisfies a predetermined threshold and (ii) a data object access window, providing a notification to a user device that requests feedback from a user indicating whether the data object can be deleted, and in response to receiving data that indicates that the data object can be deleted, generating an instruction to cause deletion of the data object upon the expiration of the access window.

Optimizing data storage with access windows

Garbage collection for data storage

A router receives from a host service a message which is intended for delivery to a mobile device via a wireless network. The message includes an indication field which includes a return packet indication on whether to send a return packet to the host, an identifier field which includes an identifier which identifies the device, and a payload field which includes a payload of the message. When the indication is set to a first, setting and the message is not being delivered to the device, the router sends to the host a return packet which indicates that the message is not being delivered to the device. When the indication is set to a second setting and the message is not being delivered to the device, the router does not send to the host the return packet which indicates that the message is not being delivered to the device.

System and method of message delivery in a wireless communication network

A router is operative to perform the following actions for each one of a plurality of wireless mobile devices operating in a wireless network. The router transmits to the wireless mobile device a number of data packets matched for a window size. The router changes the window size for the wireless mobile device based on whether a round trip time for communicating the data packets is within a threshold value. The router will update the threshold value based on the round trip times associated with traffic communicated via the router for all of the wireless mobile devices.

Methods and apparatus for dynamically adjusting a data packet window size for data packet transmission in a wireless communication network

A router system receives from a host service a message which is intended for delivery to a mobile device via a wireless network. The message includes at least a first field having an identifier which identifies the mobile device, a second field having a payload of the message, and a third field having a return packet indication on whether to return a return packet to the host service. The router system examines the indication in the message and, if the indication is set to a first setting, the router system returns to the host service a return packet which indicates a status associated with the message for delivery to the mobile device. If the indication is set to a second setting, then the router system does not return to the host service the return packet which indicates the status associated with the message for delivery to the mobile device.

A router is operative to perform the following actions for each one of a plurality of wireless devices operating in a wireless network. The router initially transmits a number of data packets matched for a window size which corresponds to a default window size. The router then measures a round trip time (RTT) associated with communication of each of the transmitted packets. The router increases the window size if the RTT associated with the communication of each of the transmitted packets is within a first threshold. On the other hand, the router decreases the window size if the RTT associated with the communication of any of the transmitted packets is more than the first threshold but less than a second threshold. The router sets or updates at least one of the first or the second thresholds based on traffic communicated to the plurality of wireless devices via the router.

A router system maintains a status of a wireless device of either available or unavailable. The status of available may be indicative of the wireless device being in-coverage with a wireless network, whereas the status of unavailable may be indicative of the wireless device being out-of-coverage with the wireless network. The router system is adapted to receive, from a host service, a user data message that is addressed to an address of the wireless device. The user data message has a user data payload and one or more request parameters, where the one or more request parameters instruct the router system on whether to return at least a portion of the user data message to the host service when the device status is unavailable. In response to the user data message being received at the router system when the device status is available, the router system delivers the user data message to the wireless device via the wireless network. In response to the user data message being received at the router system when the device status is unavailable, the router system fails to delivery the user data message to the wireless device but sends the at least user data message portion to the host service.

In one example, a method in a wireless router system for transmitting data packets to a mobile device through a wireless network based upon a round trip time is provided. A number of packets matched for a window size are transmitted to the mobile device, and a round trip time is measured. The window size for data packet transmission is re-sized by increasing the window size if the round trip time is within a first threshold, and decreasing the window size if the round trip time is more than the first threshold but less than a second threshold. The window size is also decreased if the round trip time is more than the second threshold, where each such data packet is further marked as a lost packet. A number of packets matched for the re-sized window is subsequently transmitted, including a retransmission any packets marked as lost.

In one embodiment, a scheme is provided for securing a personalized indicium assigned to a mobile communications device. Upon detecting at a mobile communications device that one of a list of criteria have been met, a challenge-and-response procedure is initiated by the mobile communications device. During the challenge-and-response procedure, the mobile communications device and a network node will authenticate the personalized indicium using a shared authentication key.

System and method for initiation of a security update

Systems and methods for a wireless communication system used for transmitting and receiving information, the information not containing identification of the information's intended recipient. A method for transmitting payload information, the method comprising providing verification information scrambling a portion of the verification information and transmitting the payload information with the scrambled verification information portion. Also provided is a method for processing transmitted payload information incorporated into an encoded information message with scrambled verification information, the method comprising receiving the encoded information message descrambling at least a portion of the scrambled verification information and comparing said descrambled verification information with predetermined verification information processing said payload information based on said comparison.

System and methods for the wireless delivery of a message

A wireless communication system, comprising a host service, a wireless router system coupled to the host service, a wireless network coupling the wireless router system and a wireless mobile communication device ('mobile device'), adaptively delivers data to the mobile device in the wireless communication system using a notification message delivery mechanism. Mobile device reports its session state to the wireless router at a regular interval or if there is a change in state. The host service sends out a message to the wireless router to query the state of the mobile device. If the state of the mobile device is determined to be in coverage (or logged on), the host service sends down the data message to the mobile device using a payload message (MTH) with certain parameters configured. The data is temporarily stored at the wireless router. If the device is available, the message is sent to the device over the wireless network. If the device is not available, the wireless router returns the payload message back to the host service, updating the status of the device. The wireless router also reports to the host service any change in device state. If the device is back in coverage, the payload message is then resent from the host service to the device.

Growing community of inventors

Waterloo, Canada

Simon Tyler Wise