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Method and apparatus for performing buffer status reporting procedure for relaying in wireless communication system

  • US 10,356,656 B2
  • Filed: 04/07/2016
  • Issued: 07/16/2019
  • Est. Priority Date: 04/07/2015
  • Status: Active Grant
First Claim
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1. A method for performing a buffer status reporting (BSR) procedure in a wireless communication system, the method comprising:

  • receiving, by a relay user equipment (UE), data to be relayed from a remote UE via sidelink,wherein a buffer size field in a BSR or a sidelink BSR reflecting the data to be relayed includes both uplink data in a transmitting layer 2 (L2) entity over a Uu interface and sidelink data in a receiving L2 entity over a PC5 interface;

    triggering, by the relay UE, either the BSR or the sidelink BSR for the data to be relayed,wherein the BSR is triggered by the sidelink data in the receiving L2 entity, when the BSR is used for relaying the data, andwherein the sidelink BSR is triggered by the uplink data in the transmitting L2 entity, when the sidelink BSR is used for relaying the data; and

    transmitting, by the relay UE, the triggered BSR or the triggered sidelink BSR to a network.

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