×

Receiver apparatus and method for releasing memory thereof

  • US 8,254,339 B2
  • Filed: 07/07/2005
  • Issued: 08/28/2012
  • Est. Priority Date: 07/12/2004
  • Status: Active Grant
First Claim
Patent Images

1. A memory release method in a receiver apparatus of HSDPA (High Speed Downlink Packet Access) data transmission scheme, comprising:

  • receiving a plurality of data units from a transmitter apparatus, wherein each of the plurality of data units include a sequence number;

    storing the received plurality of data units in each of a plurality of reordering buffers of the receiver apparatus;

    reordering, by each of the plurality of reordering buffers, each of the plurality of data units based on the sequence numbers included in each of the plurality of data units;

    ranking each of the plurality of reordering buffers on the basis of Quality of Service (QoS) information indicating a traffic class of the data units stored in the reordering buffers;

    judging that said reordering buffers need memory-release;

    determining a size of memory to be released in accordance with an operation mode of RLC (Radio Link Control) by determining to release a first size of memory when the operation mode of RLC is AM (Acknowledge Mode) and determining to release a second size of memory when the operation mode of RLC is UM (Unacknowledge Mode); and

    releasing the determined size of memory from a lowest ranked one of said ranked reordering buffers when it is judged that memory-release is necessary.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×