METHOD FOR TRIGGERING POWER HEADROOM REPORTING IN A DUAL CONNECTIVITY SYSTEM AND A DEVICE THEREFOR

    公开(公告)号:US20170223642A1

    公开(公告)日:2017-08-03

    申请号:US15492179

    申请日:2017-04-20

    CPC classification number: H04W52/365 H04W24/10 H04W52/34

    Abstract: A method for a User Equipment (UE) operating in a wireless communication system. The UE configures a radio bearer comprising a first Medium Access Control (MAC) entity and a second MAC entity. The UE triggers a power headroom reporting (PHR) in the first MAC entity if a prohibitPHR-Timer of the first MAC entity expires or has expired when the first MAC entity has uplink (UL) resources for a new transmission, and a condition is satisfied. The UE transmits the PHR. The condition includes: any cell of the second MAC entity has UL transmission, and a required power backoff for the any cell of the second MAC entity has changed more than a threshold.

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