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METHOD OF CHANGING TRANSMISSION MODE, METHOD OF REQUESTING PACKET RETRANSMISSION, AND METHOD OF RETRANSMITTING PACKET

  • US 20100182924A1
  • Filed: 05/08/2008
  • Published: 07/22/2010
  • Est. Priority Date: 07/03/2007
  • Status: Abandoned Application
First Claim
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1. A method of changing a transmission mode by a terminal for receiving a data packet of a broadcasting or multicast service, the method comprising:

  • taking allocation of a random access channel so as to transmit channel information corresponding to the broadcasting or multicast service;

    measuring a received signal quality by using a pilot signal included in the data packet;

    determining whether a change of transmission mode is necessary based on the received signal quality; and

    transmitting channel information for requesting the change of the transmission mode through the random access channel, when the change of the transmission mode is necessary.

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