Method for QoS guarantees in a multilayer structure

• US 9,661,524 B2
• Filed: 06/06/2016
• Issued: 05/23/2017
• 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): Yuen, Kan
• Assistant Examiner(s): CHANG, RICHARD K
• Application Number:
  US15/174,659
• Publication Number:
  US 20160286426A1
• Time in Patent Office: 351 Days
• Field of Search: 370329
• 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 an apparatus in a wireless communication system, the method comprising:

receiving a Packet Data Convergence Protocol Service Data Unit (PDCP SDU) at the apparatus;

starting a discard timer for the PDCP SDU at the apparatus when receiving the PDCP SDU;

when the discard timer for the PDCP SDU expires, discarding the PDCP SDU at the apparatus; and

if a Radio Link Control Service Data Unit (RLC SDU) related with the PDCP SDU is present in the apparatus and if the RLC SDU is not mapped to an RLC Protocol Data Unit (RLC PDU), discarding the RLC SDU at the apparatus.

2. The method of claim 1, wherein the RLC SDU is discarded according to an indication related to the PDCP SDU.

3. The method of claim 2, wherein the indication indicates discarding the PDCP SDU.

4. The method of claim 2, wherein the indication indicates discarding the RLC SDU.

5. The method of claim 1, wherein a value of the discard timer is indicated by a network.

11. The method of claim 1, wherein if the RLC SDU is mapped to the RLC PDU, the RLC PDU is not discarded at the apparatus.

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

a memory unit; and

a processor,

wherein the processor controls the apparatus to perform;

receiving a Packet Data Convergence Protocol Service Data Unit (PDCP SDU);

starting a discard timer for the PDCP SDU when receiving the PDCP SDU;

when the discard timer for the PDCP SDU expires, discarding the PDCP SDU; and

if a Radio Link Control Service Data Unit (RLC SDU) related with the PDCP SDU is present in the apparatus and if the RLC SDU is not mapped to an RLC Protocol Data Unit (RLC PDU), discarding the RLC SDU.

7. The apparatus of claim 6, wherein the RLC SDU is discarded according to an indication related to the PDCP SDU.

8. The apparatus of claim 7, wherein the indication indicates discarding the PDCP SDU.

9. The apparatus of claim 7, wherein the indication indicates discarding the RLC SDU.

10. The apparatus of claim 6, wherein a value of the discard timer is indicated by a network.

12. The apparatus of claim 6, wherein if the RLC SDU is mapped to the RLC PDU, the RLC PDU is not discarded at the apparatus.

13. A method of processing data at an apparatus in a wireless communication system, the method comprising:

receiving a Packet Data Convergence Protocol Service Data Unit (PDCP SDU) at the apparatus;

starting a discard timer for the PDCP SDU at the apparatus when receiving the PDCP SDU;

when the discard timer for the PDCP SDU expires, discarding the PDCP SDU at the apparatus; and

if a Radio Link Control Service Data Unit (RLC SDU) related with the PDCP SDU is present in the apparatus and if the RLC SDU is mapped to a RLC Protocol Data Unit (RLC PDU), keeping the RLC PDU at the apparatus.

14. The method of claim 13, wherein a value of the discard timer is indicated by a network.

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

a memory unit; and

a processor,

wherein the processor controls the apparatus to perform;

receiving a Packet Data Convergence Protocol Service Data Unit (PDCP SDU);

starting a discard timer for the PDCP SDU when receiving the PDCP SDU;

when the discard timer for the PDCP SDU expires, discarding the PDCP SDU; and

if a Radio Link Control Service Data Unit (RLC SDU) related with the PDCP SDU is present in the apparatus and if the RLC SDU is mapped to a RLC Protocol Data Unit (RLC PDU), keeping the RLC PDU.

16. The apparatus of claim 15, wherein a value of the discard timer is indicated by a network.