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Physical uplink control channel cells in a communication network using carrier aggregation

  • US 10,419,270 B2
  • Filed: 01/29/2015
  • Issued: 09/17/2019
  • Est. Priority Date: 01/29/2015
  • Status: Active Grant
First Claim
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1. A method, the method comprising:

  • executing, by a user equipment, communication between the user equipment and a communication network based on carrier aggregation in which a number of component carriers corresponding to a number of serving cells are aggregated and at least two physical uplink control channel (PUCCH) groups are configured, the communication being executed using the following;

    a first group of the at least two PUCCH groups, the first group comprising a first cell of the number of serving cells, which is a primary serving cell, that carries a first PUCCH, and first serving cells of the number of serving cells, which use the first PUCCH, anda second group of the at least two PUCCH groups, the second group comprising a second cell of the number of serving cells, which is a secondary serving cell, that carries a second PUCCH, and second serving cells of the number of serving cells, which use the second PUCCH; and

    in case a failure in the primary serving cell is detected by the user equipment, continuing the communication by exchanging by the user equipment the first group and the second group, wherein the secondary serving cell that carries the second PUCCH becomes a current primary serving cell and the primary serving cell that carried the first PUCCH in the first group becomes a current secondary serving cell.

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