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System and method for avoiding stall using timer for high-speed downlink packet access system

  • US 8,036,129 B2
  • Filed: 03/12/2009
  • Issued: 10/11/2011
  • Est. Priority Date: 01/05/2002
  • Status: Expired due to Term
First Claim
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1. A method of controlling a stall avoidance in a receiving communication device using a timer, the timer controlling the stall avoidance, the method comprising:

  • if the timer is not active, starting the timer by the receiving communication device when a MAC-hs (medium access control high speed) protocol data unit (PDU) with a transmission sequence number (TSN) higher than next expected TSN is correctly received;

    stopping the timer by the receiving communication device if the MAC-hs PDU with the TSN for which the timer was started can be delivered to a higher entity; and

    when the timer is stopped, and there exists some received MAC-hs PDUs that cannot be delivered to the higher entity, starting the timer for a highest TSN among those of the MAC-hs PDUs that cannot be delivered to the higher entity.

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