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RADIO COMMUNICATION SYSTEM AND MOBILE STATION DEVICE

  • US 20090316678A1
  • Filed: 08/31/2009
  • Published: 12/24/2009
  • Est. Priority Date: 08/08/2007
  • Status: Active Grant
First Claim
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1. A radio communication system including a mobile station device which transmits a random access preamble to a base station device and receives a random access response transmitted from the base station device in response to the transmitted random access preamble, and the base station device which receives the random access preamble from the mobile station device and transmits the random access response to the mobile station device in response to the received random access preamble,wherein when transmission timing of a message for the random access response overlaps with transmission timing of an ACK/NACK for downlink data transmitted by the base station device at an arbitrary timing, the mobile station device does not perform to transmit the ACK/NACK.

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