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Method for transmitting PDCP status report

  • US 7,978,616 B2
  • Filed: 03/17/2009
  • Issued: 07/12/2011
  • Est. Priority Date: 03/17/2008
  • Status: Active Grant
First Claim
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1. A method of handling PDCP (Packet Data Convergence Protocol) status reports, the method comprising:

  • receiving, from an upper layer, a request for PDCP re-establishment;

    detecting whether there are any out-of-sequence PDCP SDUs (service data units) stored;

    if there is at least one out-of-sequence PDCP SDU stored, allocating a bitmap field to have a length based on PDCP sequence numbers (SNs) from and not including a first out-of-sequence PDCP SDU up to and including a last out-of-sequence PDCP SDU; and

    if a last PDCP SDU is a first missing PDCP SDU, allocating the bitmap field to have the length of 0.

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