Power headroom reporting method and device for wireless communication system

    公开(公告)号:US10172104B2

    公开(公告)日:2019-01-01

    申请号:US15671709

    申请日:2017-08-08

    Abstract: Methods and apparatus are provided in which a configuration message to configure at least one uplink carrier is received. A power headroom report (PHR) is triggered for a first uplink carrier if a predetermined event occurs. An allocation of an uplink transmission resource is detected for the PHR. It is identified whether the first uplink carrier for which a power headroom (PH) is to be determined is different from a second carrier to which the uplink transmission resource is allocated. The PH is determined based on a first pathloss associated with the first uplink carrier, if the first uplink carrier is different from the second carrier. The PHR generated based the determined PH is transmitted.

    Apparatus and method for managing a random access channel in a mobile communication system

    公开(公告)号:US10104698B2

    公开(公告)日:2018-10-16

    申请号:US15195306

    申请日:2016-06-28

    Abstract: A random access channel (RACH) management method performed by a user equipment (UE) in a mobile communication system and an apparatus are provided. The method includes receiving, from a network, a signal indicative of a resolution of contention in a RACH procedure before a contention resolution timer expires; determining, if the received signal includes a contention resolution message including a unique identifier (ID) of the UE, that the RACH procedure has been successfully completed; receiving, from the network, after the successful completion of the RACH procedure, a UE information transmit request; and transmitting, to the network, in response to receipt of the UE information transmit request, a response message including first information indicating that the contention is detected in at least one preamble transmitted for the completed RACH procedure and indicating a number of the at least one preamble in which the contention is detected.

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