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METHOD OF FAST-RETRANSMITTING UPLINK DATA IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR

  • US 20180049234A1
  • Filed: 09/25/2015
  • Published: 02/15/2018
  • Est. Priority Date: 03/16/2015
  • Status: Active Grant
First Claim
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1. A method for transmitting uplink (UL) data performed by a user equipment (UE) in a wireless communication system that supports a low latency system, comprising:

  • receiving a UL grant for an initial data transmission from a base station;

    transmitting the initial data to the base station based on the received UL grant;

    receiving a negative acknowledgement (NACK) for the initial data transmission and a simple UL grant including resource information in relation to a retransmission of the initial data from the base station; and

    performing the retransmission of the initial data based on the received simple UL grant,wherein the simple UL grant includes at least one of a subframe offset (SF_offset) field representing a subframe (SF) offset from a subframe (SF) on which the base station transmits the simple UL grant, a HARQ process ID (HARQ PID) field representing a HARQ process ID that corresponds to retransmission data or a RBSTART field representing an index of a resource allocation start resource of the retransmission data.

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