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Method for performing a HARQ operation in a radio communications system, and method and apparatus for allocation of subframes

  • US 8,599,782 B2
  • Filed: 11/10/2009
  • Issued: 12/03/2013
  • Est. Priority Date: 11/10/2008
  • Status: Expired due to Fees
First Claim
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1. A method for allocating subframes in a wireless communication system that performs communication by using a radio frame including a plurality of subframes, the method comprising:

  • receiving an uplink grant in a backhaul downlink subframe #n (n being a integer number), wherein the uplink grant comprises an offset value;

    transmitting uplink data based on the uplink grant in a backhaul uplink subframe #(n+4); and

    determining a backhaul downlink subframe in which an acknowledgement/not-acknowledgement (ACK/NACK) for the uplink data is to be received,wherein when a backhaul downlink subframe #(n+8) is a limitation subframe and the offset value indicates one subframe, the determined backhaul downlink subframe is a subframe shifted from the backhaul downlink subframe #(n+8) by the offset value and the ACK/NACK is received in the determined backhaul downlink subframe, andwherein when the backhaul downlink subframe #(n+8) is the limitation subframe and the offset value indicates more than one subframe, the determined backhaul downlink subframe is the backhaul downlink subframe #(n+8) and the backhaul downlink subframe #(n+8) is punctured, andwherein the limitation subframe is a subframe in which essential information for a relay user equipment is transmitted.

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