Method for QoS guarantees in a multilayer structure

• US 8,665,815 B2
• Filed: 11/14/2012
• Issued: 03/04/2014
• Est. Priority Date: 09/18/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chun, Sung Duck, Lee, Young Dae, Park, Sung Jun, Yi, Seung June
• Primary Examiner(s): Sinkantarakorn, Pao
• Assistant Examiner(s): Chang, Richard K
• Application Number:
  US13/677,111
• Publication Number:
  US 20130070714A1
• Time in Patent Office: 475 Days
• Field of Search: 370/329, 370/469, 455/68, 455/503
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1877 for semi-reliable protocols, e.g. for less sensitive applications like streaming video buffer level management for video bitstream control arrangements H04N21/44004
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04W 28/0252 per individual bearer or channel dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 8/00 Network data management
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

A method in which a user equipment processes data in a wireless mobile communication system is provided. The method includes the steps of receiving a first data block from an upper layer, transferring a second data block including the first data block to a lower layer at a particular protocol layer, discarding the first and second data blocks present in the particular protocol layer if a certain period of time has passed, and transferring information associated with the discard of the second data block to the lower layer.

Claims

1. A method of processing data at a transmitting end in a wireless mobile communication system, the method comprising the steps of:

receiving at a Packet Data Convergence Protocol (PDCP) layer of a transmitting end a first data block from an upper layer of the transmitting end;

generating a second data block including the first data block at the PDCP layer of the transmitting end;

discarding the first data block present in the PDCP layer of the transmitting end if a certain period of time has passed; and

indicating, from the PDCP layer, layer of the transmitting end, a Radio Link Control (RLC) layer of the transmitting end to discard a corresponding RLC data block if the second data block has already been transferred from the PDCP layer of the transmitting end to the RLC layer of the transmitting end.

2. The method of claim 1, wherein the first data block present in the PDCP layer is discarded if a timer expires, wherein the timer is operated when receiving the first data block from the upper layer.

3. The method of claim 1, wherein the first data block is a PDCP Service Data Unit (PDCP SDU).

4. The method of claim 1, wherein the second data block is a PDCP Protocol Data Unit (PDCP PDU).

5. The method of claim 1, wherein the upper layer is a Radio Resource Control (RRC) layer.

6. The method of claim 1, wherein the RLC layer operates in an Acknowledged Mode (AM) or an Unacknowledged Mode (UM).

7. The method of claim 1, wherein the certain period of time is indicated by a network or by an upper layer above the PDCP layer.

8. The method of claim 2, wherein a value of the timer is indicated by a network or by an upper layer above the PDCP layer.

9. An apparatus for use in a wireless mobile communication system, the apparatus comprising:

an upper entity;

a Packet Data Convergence Protocol (PDCP) entity placed below the upper entity; and

a Radio Link Control (RLC) entity placed below the PDCP entity,

wherein the PDCP entity is configured;

to receive a first data block from the upper entity;

to generate a second data block including the first data block at the PDCP entity; and

to discard the first data block present in the PDCP entity if a certain period of time has passed,

to indicate, from the PDCP entity, the RLC entity to discard a corresponding lower layer RLC data block if the second data block has already been transferred from the layer PDCP entity to the RLC entity.

10. The apparatus of claim 9, wherein the first data block present in the PDCP entity is discarded if a timer expires, wherein the timer is operated when receiving the first data block from the upper layer.

11. The apparatus of claim 9, wherein the first data block is a PDCP Service Data Unit (PDCP SDU).

12. The apparatus of claim 9, wherein the second data block is a PDCP Protocol Data Unit (PDCP PDU).

13. The apparatus of claim 9, wherein the upper layer is a Radio Resource Control (RRC) layer.

14. The apparatus of claim 9, wherein the RLC layer operates in an Acknowledged Mode (AM) or an Unacknowledged Mode (UM).

15. The apparatus of claim 9, wherein the certain period of time is indicated by a network or by an upper layer above the PDCP entity.

16. The apparatus of claim 10, wherein a value of the timer is indicated by a network or by an upper layer above the PDCP entity.