Data transmission method for HSDPA

• US 8,654,648 B2
• Filed: 07/27/2012
• Issued: 02/18/2014
• Est. Priority Date: 01/05/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yi, Seung-June, Yeo, Woon-Young, Lee, So-Young
• Primary Examiner(s): Lee, Andrew
• Application Number:
  US13/560,832
• Publication Number:
  US 20120287947A1
• Time in Patent Office: 571 Days
• Field of Search: 370/236, 370/394, 370/412, 370/474
• US Class Current: 370/236
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/14 using intermediate storage

Abstract

In the data transmission method of an HSDPA system according to the present invention, a transmitter transmits Data Blocks each composed of one or more data units originated from a same logical channel, and a receiver receives the Data Block through a HS-DSCH and distributes the Data Block to a predetermined reordering buffer. Since each Data Block is composed of the MAC-d PDUs originated from the same logical channel, it is possible to monitor the in-sequence delivery of the data units, resulting in reduction of undesirable queuing delay caused by logical channel multiplexing.

Claims

1. A method for processing packet data in a receiver of a communications system, the method comprising:

receiving a payload comprising one or more medium access control (MAC) protocol data units (PDUs);

adding a header into the payload to generate a data block,

wherein the header includes a logical channel identity, and

wherein each of the one or more MAC PDUs is from a same logical channel with no logical channel multiplexing;

forwarding the data block to a reordering buffer associated with the logical channel identity;

disassembling the data block into at least one data unit; and

delivering the at least one data unit to an upper layer.

2. The method of claim 1, wherein the one or more MAC PDUs have a same size.

3. The method of claim 1, wherein a format of the data block is determined by upper layer signaling.

4. The method of claim 1, wherein the reordering buffer is configured for each logical channel.

5. The method of claim 1, wherein the logical channel identity is included in a logical channel identity field.

6. An apparatus for processing packet data in a communications system, the apparatus comprising:

a receiver configured to receive a payload comprising one or more medium access control (MAC) protocol data units (PDUs),

wherein a header is added into the payload to generate a data block,

wherein the header includes a logical channel identity, and

wherein each of the one or more MAC PDUs is from a same logical channel with no logical channel multiplexing;

a reordering buffer;

a processor configured to;

forward the data block to the reordering buffer associated with the logical channel identity,

disassemble the data block into at least one data unit, and

deliver the at least one data unit to an upper layer.

7. The apparatus of claim 6, wherein the one or more MAC PDUs have a same size.

8. The apparatus of claim 6, wherein a format of the data block is determined by upper layer signaling.

9. The apparatus of claim 6, wherein the reordering buffer is configured for each logical channel.

10. The apparatus of claim 6, wherein the logical channel identity is included in a logical channel identity field.