Earthquake and Tsunami Cellular Warning System
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Accused Products
Abstract
A method (700) for use in a cellular system (100), comprising the step of transmitting a predefined message (705) comprising a primary warning notification (710) and verification information (715) related to the primary warning notification to user terminals in one or more cells of the system. The predefined message is transmitted simultaneously to a plurality of user terminals (740) in the system (100) on a physical channel (745) in the system which is dedicated to messages to single users. Suitably, the physical channel used is a paging channel (750) in the system (100), and also suitably, the predefined message causes the user terminals to listen (720) for a secondary warning notification in subsequent messages on the same channel.
21 Citations
32 Claims
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1-16. -16. (canceled)
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17. A method for implementing an Earthquake and Tsunami Warning System (ETWS) in a cellular communications system, the method comprising:
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transmitting a predefined ETWS message simultaneously to a plurality of user equipments (UEs) in one or more cells of the system; wherein the predefined ETWS message is transmitted on a physical channel in the cellular communications system, the physical channel being dedicated to messages to single UEs, and the predefined ETWS message comprises a combination of a primary warning notification and verification information related to the primary warning notification. - View Dependent Claims (18, 19, 21, 22, 23)
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20. The method of clam 17, wherein the predefined ETWS message includes a message type which identifies the predefined message and causes a receiving UE to treat the predefined message in a predefined manner.
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24. An Earthquake and Tsunami Warning System (ETWS) system in a cellular communications system, the ETWS system configured to:
transmit a predefined ETWS message simultaneously to a plurality of user equipments (UEs) in one or more cells of the system, wherein the ETWS message is transmitted on a physical channel in the cellular communications system, the physical channel being dedicated to messages to single UEs, and the ETWS message comprising a combination of a primary warning notification and verification information related to the primary warning notification. - View Dependent Claims (25, 26, 27, 28)
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29. A user equipment (UE) for use in an Earthquake and Tsunami Warning System (ETWS) in a cellular communications system, the UE configured to:
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receive a predefined ETWS message on a physical channel, the physical channel being dedicated to messages to single UEs, and the predefined ETWS message comprising a combination of a primary warning notification and verification information related to the primary warning notification; and recognize a received message on the physical channel as being the predefined ETWS message. - View Dependent Claims (30, 31, 32)
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Specification