×

Channel state information transmission

  • US 9,980,204 B2
  • Filed: 03/13/2016
  • Issued: 05/22/2018
  • Est. Priority Date: 03/16/2015
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • receiving, by a wireless device, at least one message comprising configuration parameters of a plurality of cells, the plurality of cells grouped into a plurality of physical uplink control channel (PUCCH) groups comprising;

    a primary PUCCH group comprising a primary cell with a primary PUCCH; and

    a secondary PUCCH group comprising a PUCCH secondary cell with a secondary PUCCH;

    receiving, in subframe m, a first media-access-control control element (MAC CE) indicating activation of a secondary cell in the primary PUCCH group;

    starting transmission of channel state information (CSI) fields of the secondary cell from subframe m+8;

    receiving, in subframe n, a second MAC CE indicating activation of the PUCCH secondary cell; and

    starting transmission of CSI fields for the PUCCH secondary cell from subframe n+8+k, wherein k is an integer depending, at least in part, on when the PUCCH secondary cell is successfully detected by the wireless device.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×