SYSTEMS, METHODS, AND DEVICES FOR SYNCHRONIZATION AND RESOURCE ALLOCATION FOR DEVICE-TO-DEVICE COMMUNICATION
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United States of America Patent
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Issued Date -
Dec 22, 2016
app pub date -
Jan 30, 2015
filing date -
Jan 31, 2014
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Abstract
A user equipment (UE) is configured to synchronize with an independent synchronization source (I-SS) based on a first synchronization signal received from the I-SS. The UE is configured to determine whether a received signal strength from the I-SS is below a threshold value. The UE is configured to, in response to determining that the I-SS is below the threshold value, transmit a second synchronization signal propagating synchronization information derived from the I-SS to one or more peer UEs out of range of the I-SS. The second synchronization signal comprises a device-to-device synchronization signal (D2DSS).
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