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US 12,764,809 B2Granted
Methods, apparatus, and systems for power efficient D2D communications for wearable and IoT devices
AssigneeInterDigital Patent Holdings, Inc.
InventorsSaad Ahmad, Martino M. Freda
Life of this patent
Estimating the term…
Abstract
Method, apparatus, and system for establishing and conducting device to device communications in a radio network.
Claims12
A method implemented by a first wireless transmit/receive unit (WTRU), the method comprising:
- establishing a device to device (D2D) communication link between the first WTRU and a second WTRU, wherein the first WTRU acts as a relay to a network for the second WTRU;
- receiving a first D2D message from the second WTRU, the first D2D message comprising a non-access stratum (NAS) message, and wherein the NAS message comprises a tracking area update (TAU) message;
- sending a message to the network based on receiving the first D2D message comprising the NAS message from the second WTRU;
- receiving a rejection message from the network in response to the message, wherein the rejection message is an out of coverage rejection based on the TAU message;
- and
- transmitting a second D2D message to the second WTRU based on receiving the rejection message from the network, the second D2D message indicating rejection cause information.
3 more elements
A first wireless transmit/receive unit (WTRU) comprising a processor and memory, the processor and memory configured to:
- establish a device to device (D2D) communication link between the first WTRU and a second WTRU, wherein the first WTRU is configured to act as a relay to a network for the second WTRU;
- receive a first D2D message from the second WTRU, the first D2D message comprising a non-access stratum (NAS) message, and wherein the NAS message comprises a tracking area update (TAU) message;
- send a message to the network based on receiving the first D2D message comprising the NAS message from the second WTRU;
- receive a rejection message from the network in response to the message, wherein the rejection message is an out of coverage rejection based on the TAU message;
- and
- transmit a second D2D message to the second WTRU based on receiving the rejection message from the network, the second D2D message indicating rejection cause information.
3 more elements
Dependencies are inferred from the claim text.