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Uplink resynchronization for use in communication systems

  • US 8,208,416 B2
  • Filed: 09/26/2011
  • Issued: 06/26/2012
  • Est. Priority Date: 09/29/2008
  • Status: Active Grant
First Claim
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1. A method in a device, the method comprising:

  • operating a time alignment timer to maintain uplink time alignment;

    receiving a configuration of a physical uplink control channel (PUCCH),wherein the configuration identifies a PUCCH resource;

    transmitting uplink transmissions using the PUCCH resource;

    after expiration of the time alignment timer, releasing PUCCH resources and maintaining the configuration of the PUCCH resource;

    subsequently re-synchronizing uplink time alignment; and

    after re-synchronizing uplink time alignment, determining whether the PUCCH resource is still available for transmitting further uplink transmissions.

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