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Wireless communication system, mobile station apparatus, base station apparatus, random access method, and integrated circuit

  • US 8,995,371 B2
  • Filed: 03/09/2011
  • Issued: 03/31/2015
  • Est. Priority Date: 03/29/2010
  • Status: Expired due to Fees
First Claim
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1. A wireless communication system comprises a base station apparatus and a mobile station apparatus, wherein:

  • the base station apparatus is configured to;

    allocate, to the mobile station apparatus, resources on each of a plurality of component carriers, wherein the plurality of component carriers include a first component carrier and one or more second component carriers,transmit, to the mobile station apparatus, a first component carrier setting information and a second component carrier setting information, wherein;

    the first component carrier setting information includes information related to random access and includes an information related to configuration of physical channel of the first component carrier,the second component carrier setting information does not include the information related to random access and includes an information related to configuration of physical channel of the one or more second component carriers, andthe information related to random access includes a position information of random access channel, sequence information and information related to sequence group, andin a case that the mobile station apparatus is made perform random access, transmit, to the mobile station apparatus, a random access instruction information which includes a preamble number and a random access channel number; and

    the mobile station apparatus is configured to;

    receive, from the base station apparatus, the first component carrier setting information and the second component carrier setting information,in a case that random access is performed not based on the random access instruction information from the base station apparatus, select a random access preamble using the information related to random access included in the first component carrier setting information,in a case that random access is performed based on the random access instruction information from the base station apparatus, select a random access preamble using the preamble number included in the random access instruction information,transmit, to the base station apparatus, the random access preamble on the component carrier corresponding to the first component carrier setting information, andcommunicate with the base station apparatus by using one or more component carriers.

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