Techniques for mobile communication in an unlicensed frequency band are discussed. One example apparatus implementing such techniques includes a processor, transmitter circuitry, and receiver circuitry. The processor is configured to determine, for one or more user equipments (UEs), a set of listen before talk (LBT) parameters associated with an unlicensed frequency band; and determine at least one uplink grant in the unlicensed frequency band for at least one of the one or more UEs. The transmitter circuitry is configured to transmit the set of LBT parameters and the at least one uplink grant. The receiver circuitry is configured to receive transmissions over resources associated with the at least one uplink grant.
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