Blackberry Corporation

Research in Motion Corporation

Alexander Shatsky

Richard John George

Gaelle Christine Martin-Cocher

Adrian Buckley

Jan Hendrik Lucas Bakker

Abhinav Gupta

Gaëlle Christine Martin-Cocher

Jonathan Joshua Dearden

Haiyang Yin

Brian Edward Anthony McColgan

Dalsu Lee

Ximing Zeng

Richard George

Dapeng Gao

Alexandre Kouznetsov

Brian Mccolgan

Jan Hendrik Lucas Barker

Systems and methods can be implemented for IP multimedia subsystem (IMS) resource reservation. A first electronic device can transmit, through an IP network, a non-Session Initiation Protocol (SIP) message to an application server in an IMS network, where the non-IMS SIP message includes a request to initiate an IMS communication session through the IMS network with a second electronic device. A SIP message can also be transmitted through the IMS network to the application server that initiates a SIP INVITE session between the first electronic device and the application server, where the SIP INVITE session is routed through the IMS network. The first electronic device can then, receive a SIP response message that identifies a resource reservation for the IMS communication session from the application server.

Using non-IMS connections in IMS sessions

A method and system for managing a target list on behalf of a user agent client, the method receiving a subscription request from the user agent client, the subscription request containing at least one uniform resource identifier identifying a resource; providing a subscription request to a an information owning enabler; receiving a notification containing information associated with a candidate uniform resource indicator set; evaluating information associated with the candidate uniform resource indicator set to create a selected uniform resource indicator set; and notifying the user agent client of the selected uniform resource indicator set.

System and method for providing and managing a target list on behalf of a user agent client

An apparatus and method for macro operation involving a plurality of session protocol transactions is disclosed. In accordance with an embodiment of the disclosure, a mobile device generates a binary encoded message having an indication from which a server can determine a plurality of session protocol transactions to be performed. The binary encoded message is sent from the mobile device and received by the server. In accordance with an embodiment of the disclosure, the server determines the plurality of session protocol transactions to be performed based on the indication in the binary encoded message and attempts the plurality of session protocol transactions. By reducing the number of messages between the mobile device and the server, and by reducing the message size compared to SIP messages, communication resources for the mobile device can be conserved. Also battery power for the mobile device can be conserved.

Apparatus and method for macro operation involving a plurality of session protocol transactions

A method, system and apparatus for obtaining enhanced location information for a mobile device. The mobile device is configured to allow a determination of its location, for example via GPS. Location data for the mobile device, exemplarily obtained via GPS, may be further specified using context information for the mobile device. Additional data is obtained and processed to obtain context information for the mobile device. Enhanced location information is determined for the mobile device at least in part based on processing the location data in association with the context information. Additional data may comprise, for example, ambient noise, speech, images or text.

Method, device and system for enhancing location information

A system and method may dynamically correct the dead reckoning (DR) position of a mobile device. An indoor or outdoor venue may have Access Points (APs) dispersed around its interior. Each time that a mobile device experiences a handover from one AP to a new AP, the mobile device and/or the local network associated with the venue may determine whether or not the mobile device's DR position corresponds to the location of the new AP. If the mobile device's DR position does not correspond to the location of the new AP within a predetermined threshold, then the mobile device's DR position may be updated to a position associated with the new AP. As a result, the DR position of the mobile device may be continuously checked, and if need be, corrected at each AP handover associated with the venue. The APs may be Wi-Fi/WLAN APs, eNodeB's, or other APs.

Method and apparatus to correct indoor positioning by utilizing Wi-Fi handovers

A method and system for enforcing the user of a proxy server within an enterprise communication system. The system includes an enterprise voice application server configured to act as a SIP proxy to client devices, and a private branch exchange configured to act as a SIP registrar. The client devices are configured to evaluate incoming SIP requests to determine whether they were received via the enterprise voice application server and, if not, to respond with a SIP 305 Use Proxy message referencing the enterprise voice application server in a Contact field. The 305 Use Proxy message forces the PBX or other intermediate SIP server to reroute the SIP request and any subsequent SIP requests in the dialog through the enterprise voice application server.

Method and system for enforcing proxy use within an enterprise communications system

A system for communicating a message using a second signaling protocol is disclosed. The second signaling protocol provides a session control channel between a user agent (UA) and a network node and may include, for example the I1 protocol. The system identifies a first string to be transmitted within a first message. The first message is encoded in accordance with a first signaling protocol. The system associates the first string with a first key, and stores the first string and the first key in a database. The database associates the first string and the first key. The system encodes the first key within a second message, and transmits the second message using the second signaling protocol. The first string may include a plurality of data values. The system sorts the plurality of data values into an ordering, and associates each of the plurality of data values with a key.

System and method for reducing message signaling

A user equipment (UE) and method is provided having one or more components configured to receive a non-session initiation protocol (SIP) notification from a SIP entity and in response to send a ping request to the SIP entity, the one or more components further configured to receive a SIP request from the SIP entity. A network component and method is also provided that include one or more components configured to send a non-session initiation protocol (SIP) notification to a user equipment (UE) and to receive a ping request from the UE and further to send a SIP request to the UE.

'Push' keep-alive mechanism for SIP user agents located behind NATS/firewalls

A method and system for handing off an active VoIP call with a remote party from a VoIP interface of a dual-mode device to a cellular interface of the dual-mode device. A cellular call is established between a PBX IP/PSTN gateway and the cellular interface. Media relating to the first termination point of the VoIP leg of the active call is then redirected to the cellular call and the VoIP leg is terminated.

System and method for handoff of session from VoIP interface to cellular interface of dual-mode device

A method and dual-mode device for handing over an active call from the device's VoIP interface to its cellular interface. The active call is placed on hold and a second call is established from the VoIP interface to the cellular interface of the dual-mode device, wherein the second call includes a VoIP leg from the VoIP interface of the dual-mode device to a communications server. The remote device involved in the VoIP call is then instructed to initiate a new call to the communications server referencing the second call and causing the communications server to replace the VoIP leg of the second call with the new call, thereby joining the remote party to the second call connected to the cellular interface of the dual-mode device. The active call is then terminated.

Dual-mode device and method for handover of session from VOIP interface to cellular interface

The present disclosure described herein relates to a wireless electronic device and method for managing access to a server. The method comprises: receiving from the wireless electronic device a message identifying one or more requested services; accessing a database to identify a plurality of services from a plurality of servers available in the network; analyzing the database to identify a server of the plurality of servers that provides a requested service of the requested services; generating and sending an access request to the server for the wireless electronic device; receiving from the server information relating to the server; and generating and sending a response message to the wireless electronic device providing the information.

System and method for managing registration of services for an electronic device

Systems, methods and devices are disclosed useful for enabling wireless signals representing control messages to be sent between a wireless handheld telephony device and a call control server during an ongoing communication session when an out-of-band path becomes unavailable, the communication session being controlled by the call control server.

Growing community of inventors

Waterloo, Canada

Alexander Shatsky