BlackBerry. has filed a patent for a system and method in a user equipment (UE) to transfer an emergency session from one network to another. The method involves specific steps to ensure a seamless transition of the ongoing emergency session. GlobalData’s report on BlackBerry gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on BlackBerry, Adaptive video coding was a key innovation area identified from patents. BlackBerry's grant share as of January 2024 was 67%. Grant share is based on the ratio of number of grants to total number of patents.
Method for transferring emergency session between networks
The patent application (Publication Number: US20240022985A1) describes a method for transferring an ongoing emergency session from a first network to a second network. The method involves receiving a first attach request message from a user equipment (UE) in the second network, transmitting an attach reject message, receiving a second attach request message from the UE with a request type set to "handover of emergency bearer services," and transmitting an attach accept message to transfer the ongoing emergency session. The second attach request message can be an emergency attach request message, and the attach reject message may include an evolved packet system (EPS) mobility management (EMM) cause code, such as #19 indicating EPS Session Management (ESM) failure.
Furthermore, the patent application includes details about the network components involved in the method. The network component in the first network comprises a processor and memory storing instructions for receiving attach request messages, transmitting reject messages, and handling the transfer of emergency sessions between networks. The second network can be a fifth-generation (5G) network, while the first network may be a fourth-generation (4G) network. Additionally, the non-transitory computer-readable storage medium described in the patent application includes instructions for the processor to handle the transfer of emergency sessions between networks, including receiving attach request messages, transmitting reject messages, and sending accept messages for the transfer. The medium may also store information about emergency attach request messages and EMM cause codes for ESM failure.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
