CMAS alert procedures over Wi-Fi for low power devices
First Claim
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1. A wireless user equipment (UE) device, comprising:
- a cellular radio, comprising one or more antennas configured for wireless communication;
a cellular modem operably coupled to the cellular radio; and
a processing element operably coupled to the cellular radio;
wherein the cellular radio and the processing element are configured to;
during registration with a cellular network, provide an indication of support for receiving indications of emergency alerts via Wi-Fi;
turn off the cellular radio after registration with the cellular network and after providing the indication of support for receiving indications of emergency alerts via Wi-Fi;
receive, over a Wi-Fi network, an indication of an emergency alert, wherein the indication of the emergency alert is received over the Wi-Fi network while the cellular radio is turned off;
in response to receiving the indication of the emergency alert over the Wi-Fi network while the cellular radio is turned off, activate the cellular radio to retrieve the emergency alert over the cellular network; and
retrieve a message via the cellular radio over the cellular network, wherein the message comprises the emergency alert.
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Abstract
Distributing indications of emergency messages via Wi-Fi. A cellular device may temporarily disable its cellular modem. The cellular device may receive an indication over Wi-Fi that an emergency message has been broadcast. In response, the cellular device may activate its cellular modem and retrieve the emergency message via a cellular network.
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Citations
19 Claims
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1. A wireless user equipment (UE) device, comprising:
- a cellular radio, comprising one or more antennas configured for wireless communication;
a cellular modem operably coupled to the cellular radio; and
a processing element operably coupled to the cellular radio;
wherein the cellular radio and the processing element are configured to;
during registration with a cellular network, provide an indication of support for receiving indications of emergency alerts via Wi-Fi;
turn off the cellular radio after registration with the cellular network and after providing the indication of support for receiving indications of emergency alerts via Wi-Fi;
receive, over a Wi-Fi network, an indication of an emergency alert, wherein the indication of the emergency alert is received over the Wi-Fi network while the cellular radio is turned off;
in response to receiving the indication of the emergency alert over the Wi-Fi network while the cellular radio is turned off, activate the cellular radio to retrieve the emergency alert over the cellular network; and
retrieve a message via the cellular radio over the cellular network, wherein the message comprises the emergency alert. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a cellular radio, comprising one or more antennas configured for wireless communication;
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8. A method of providing indications of emergency alerts over Wi-Fi, the method comprising a wireless user equipment (UE) device performing:
- during registration of the wireless UE device with a cellular network, providing an indication of support for receiving indications of emergency alerts via Wi-Fi;
powering off a cellular radio of the wireless UE device after registration with the cellular network and after providing the indication of support for receiving indications of emergency alerts via Wi-Fi;
receiving an indication of an emergency alert over a Wi-Fi network, wherein the indication is received over the Wi-Fi network while the cellular radio is powered off;
in response to receiving an indication of the indication of the emergency alert over the Wi-Fi network while the cellular radio is powered off, activating the cellular radio of the wireless UE device to retrieve the emergency alert via the cellular network using the cellular radio; and
retrieving the emergency alert via the cellular radio over the cellular network. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- during registration of the wireless UE device with a cellular network, providing an indication of support for receiving indications of emergency alerts via Wi-Fi;
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15. An apparatus comprising a processing element, the apparatus configured to cause a wireless user equipment (UE) device to:
- during registration of the wireless UE device with a cellular network, provide an indication of support for receiving indications of emergency alerts via Wi-Fi;
power down a cellular radio of the wireless UE device after providing the indication of support and after registration with the cellular network;
receive, over a Wi-Fi network, an indication of an emergency alert, wherein the indication of the emergency alert is received over the Wi-Fi network while the cellular radio is powered down;
in response to receiving the indication of the emergency alert over the Wi-Fi network while the cellular radio is powered down, activate the cellular radio of the wireless UE device; and
retrieve the emergency alert via the cellular radio over the cellular network. - View Dependent Claims (16, 17, 18, 19)
- during registration of the wireless UE device with a cellular network, provide an indication of support for receiving indications of emergency alerts via Wi-Fi;
Specification