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HARQ process number management for downlink carrier aggregation

  • US 10,412,724 B2
  • Filed: 01/22/2018
  • Issued: 09/10/2019
  • Est. Priority Date: 03/16/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a user agent supporting multiple carriers in a wireless communication network, afirst message from a base station, the first message indicating that a carrier has to be activated as an anchor carrier, receiving a second message from the base station, the second message indicating at least two carriers other than the anchor carrier that are to be assigned as non-anchor carriers, receiving a third message from a base station, the third message indicating at least two indicated carriers from the at least two assigned carriers other than the anchor carrier that are to be activated, wherein activating the indicated carriers comprises monitoring a control channel of each indicated carrier;

    starting a timer relative to each indicated carrier; and

    when the timer relative to a first carrier of the indicated carriers expires, deactivating the first carrier, the deactivating comprising ending the monitoring of a control channel of the first carrier and not deactivating other carriers of the indicated carriers.

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