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Wireless communication system, base station device, and wireless communication route selection method

  • US 9,137,732 B2
  • Filed: 02/24/2012
  • Issued: 09/15/2015
  • Est. Priority Date: 02/25/2011
  • Status: Active Grant
First Claim
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1. A wireless communication system comprising a base station device, a mobile communication terminal, and a relay station device, the relay station device relaying data transmission between the base station device and the mobile communication terminal, whereina first transmission path is used to perform a first wireless communication between the base station device and the mobile communication terminal using a first carrier that is a first component carrier,a second transmission path is used to perform a second wireless communication between the base station device and the mobile communication terminal using a second carrier that is a second component carrier, the second carrier having a frequency different from that of the first carrier, anda third transmission path is used to perform a third wireless communication, going through the relay station device, between the base station device and the mobile communication terminal, the third wireless communication being performed by performing a fourth wireless communication between the base station device and the relay station device using the first carrier and also by performing a fifth wireless communication between the relay station device and the mobile communication terminal using a third carrier,wherein at least two of the first, second and third transmission paths can be used, and wherein the base station device comprises:

  • an information collection unit configured to collect first information for calculating evaluation values for each of the first, second, and third transmission paths;

    an evaluation value calculation unit configured to calculate the evaluation values for each of the first, second, and third transmission paths, the calculation being performed based on the collected first information; and

    a transmission path selection unit configured to select, using the evaluation values of each of the first, second, and third transmission paths, a fourth transmission path to be used by the mobile communication terminal.

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