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Discontinuous reception operation for licensed-assisted access

  • US 10,548,183 B2
  • Filed: 08/28/2019
  • Issued: 01/28/2020
  • Est. Priority Date: 04/10/2015
  • Status: Active Grant
First Claim
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1. An integrated circuit which, in operation, controls of a process of a radio base station for controlling a Discontinuous Reception, DRX, function at a user equipment, wherein the user equipment is configured with at least one licensed cell and at least one unlicensed cell and operates the DRX function, the process comprising:

  • transmitting, to the user equipment, a DRX-active instruction for the user equipment to be in DRX Active Time at least on the unlicensed cell until receiving the next downlink control information related to a downlink data transmission to be received via the unlicensed cell,wherein the DRX-active instruction is included in a control element of a Medium Access Control, MAC, protocol,wherein the MAC control element comprises a predetermined identification value indicating that the MAC control element is the DRX-active instruction,wherein the DRX-active instruction is included in downlink control information, DCI, transmitted on a downlink control channel, andwherein the DCI is of the 3rd Generation Partnership Project, 3GPP, DCI Format 1A and comprises information such that the DCI;

    is processed by the user equipment as an instruction to perform a random access procedure on a licensed cell when comprising an identification of this licensed cell, andis processed by the user equipment as the DRX-active instruction when comprising an identification of the unlicensed cell.

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