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Local suspend scheme for wireless communication systems

  • US 7,254,143 B2
  • Filed: 11/01/2002
  • Issued: 08/07/2007
  • Est. Priority Date: 11/19/2001
  • Status: Active Grant
First Claim
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1. A method to improve system stability in a wireless communication system, wherein data packaged in Packet Data Units (PDUs) and a Sequence Number (SN) assigned to each data packages for monitoring purpose, upon receiving a certain type of unexpected interrupt with a parameter N, transmitting PDUs of SN up to a suspend sequence number before halting the transmission of any PDUs of SN on or after the suspend sequence number, the method comprising the steps of:

  • scheduling data to be transmitted by a Transport Format Combination (TFC) selection exchange process while the radio data transmission operation is in a particular mode;

    assigning the amount of scheduled data to be transmitted within the next transmission time interval (TTI);

    an unexpected interrupt caused by a local suspend function happening; and

    determining a suspend sequence number where the suspend sequence number is based on the parameter N, a calculated safety range factor and the sequence number of the next new PDU to be transmitted.

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