Apparatus and method for connecting an emergency call
First Claim
Patent Images
1. A method in a wireless communication device comprising:
- sending an initial direct transfer message with an emergency cause on an existing radio resource control connection;
receiving a connection release message with a call redirection cause;
synchronizing to a designated global system for mobile communications cell; and
establishing an emergency call on the global system for mobile communications cell.
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Abstract
An apparatus and method for connecting an emergency call with a wireless communication device. An initial direct transfer message with an emergency cause can be sent on an existing radio resource control connection. A cell change order can be received. Alternately, a connection release message with a call redirection cause can be received. The wireless communication device can synchronize to a designated global system for mobile communications cell. The emergency call can then be established on the global system for mobile communications cell.
36 Citations
20 Claims
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1. A method in a wireless communication device comprising:
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sending an initial direct transfer message with an emergency cause on an existing radio resource control connection;
receiving a connection release message with a call redirection cause;
synchronizing to a designated global system for mobile communications cell; and
establishing an emergency call on the global system for mobile communications cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless communication device comprising:
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a user input configured to receive an emergency call request;
a transceiver configured to send an initial direct transfer message with an emergency cause on an existing radio resource control connection in response to the user input receiving the emergency call request; and
a controller coupled to the transceiver and the user input, the controller configured to control the operations of the wireless communication device, the controller including a cell change module configured to receive a connection release message with a call redirection cause, synchronize to a designated global system for mobile communications cell, and establish an emergency call on the global system for mobile communications cell. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method in a wireless communication device comprising:
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operating on a wideband code division multiple access network;
sending an initial direct transfer message with an emergency cause on an existing radio resource control connection on the wideband code division multiple access network;
receiving a connection release message with a call redirection cause; and
synchronizing to a designated global system for mobile communications cell; and
establishing an emergency call on the global system for mobile communications cell. - View Dependent Claims (18, 19, 20)
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Specification