METHOD AND APPARATUS FOR DEVICE-TO-DEVICE (D2D) MOBILITY IN WIRELESS SYSTEMS
First Claim
1. A method for use in a wireless transmit/receive unit (WTRU) for establishing a device-to-device (D2D) communication, the method comprising:
- storing in memory, by the WTRU, a proximity detection configuration, wherein the proximity detection configuration includes a measurement object corresponding to at least one discovery signal property;
performing, by the WTRU, a proximity detection measurement;
detecting, by the WTRU, the at least one discovery signal property based on the proximity detection measurement; and
establishing, by the WTRU, D2D communication based on detecting the at least one discovery signal property.
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Abstract
A method and apparatus for mobility for device-to-device (D2D) communications is disclosed. A WTRU may store a proximity detection configuration that includes a measurement object corresponding to at least one discovery signal property, perform a proximity detection measurement to detect a discovery signal property, and then establish D2D communication. A radio resource control (RRC) Measurement Report may be received from a WTRU. Methods for D2D mobility procedures are also disclosed including mobility to or from a direct path, to or from a local path, to or from an infrastructure path, changing serving cell, and cell reselection. Other embodiments include: behavior upon mobility failure, radio link failure, and direct link failure. Security configuration and activation methods and apparatuses are also disclosed. Network methods for inter-eNB management are also disclosed. Finally, direct path proximity detection measurements and methods and apparatuses for triggering and establishing D2D sessions are disclosed.
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Citations
20 Claims
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1. A method for use in a wireless transmit/receive unit (WTRU) for establishing a device-to-device (D2D) communication, the method comprising:
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storing in memory, by the WTRU, a proximity detection configuration, wherein the proximity detection configuration includes a measurement object corresponding to at least one discovery signal property; performing, by the WTRU, a proximity detection measurement; detecting, by the WTRU, the at least one discovery signal property based on the proximity detection measurement; and establishing, by the WTRU, D2D communication based on detecting the at least one discovery signal property. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless transmit/receive unit (WTRU) configured for establishing a device-to-device (D2D) communication, the WTRU comprising:
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memory configured to store a proximity detection configuration, wherein the proximity detection configuration includes a measurement object corresponding to at least one discovery signal property; a receiver configured to perform a proximity detection measurement and further configured to detect the at least one discovery signal property based on the proximity detection measurement; and a transmitter configured to establish D2D communication based on detecting the at least one discovery signal property. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for link failure handling in a device-to-device (D2D) communication, the method comprising:
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sending, by a WTRU, a D2D link failure message, wherein the WTRU is connected in the D2D communication; ceasing, by the WTRU, all communication in the D2D communication; and disconnecting, by the WTRU, the D2D communication. - View Dependent Claims (18, 19, 20)
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Specification