Method for QoS guarantees in a multilayer structure

• US 9,386,477 B2
• Filed: 04/21/2015
• Issued: 07/05/2016
• 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:
  US14/692,028
• Publication Number:
  US 20150230125A1
• Time in Patent Office: 441 Days
• Field of Search: 370/329
• US Class Current: 1/1
• 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 communication apparatus in a wireless mobile communication system, the method comprising:

buffering a plurality of Packet Data Convergence Protocol Service Data Units (PDCP SDUs) in the communication apparatus;

running a discard timer for each PDCP SDU at the communication apparatus when each PDCP SDU is buffered in the communication apparatus;

for a PDCP SDU for which a discard timer expires, discarding the PDCP SDU buffered in the communication apparatus; and

discarding a Radio Link Control Service Data Unit (RLC SDU) including the discarded PDCP SDU and buffered in the communication apparatus in accordance with an indication accompanied by the discarding of the PDCP SDU.

2. The method of claim 1, wherein the indication is an instruction to discard the RLC SDU including the discarded PDCP SDU.

3. The method of claim 2, wherein the indication to instruct a discard of RLC SDU is not generated by the communication apparatus if the RLC SDU including the discarded PDCP SDU is not buffered in the communication apparatus.

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

5. A communication apparatus for use in a wireless mobile communication system, the communication apparatus comprising:

a memory unit; and

a processor,

wherein the processor controls the communication apparatus to perform;

buffering a plurality of Packet Data Convergence Protocol Service Data Units (PDCP SDUs) in the communication apparatus,

running a discard timer for each PDCP SDU at the communication apparatus when each PDCP SDU is buffered in the communication apparatus,

for a PDCP SDU for which a discard timer expires, discarding the PDCP SDU buffered in the communication apparatus, and

discarding a Radio Link Control Service Data Unit (RLC SDU) including the discarded PDCP SDU and buffered in the communication apparatus in accordance with an indication accompanied by the discarding of the PDCP SDU.

6. The communication apparatus of claim 5, wherein the indication is an instruction to discard the RLC SDU including the discarded PDCP SDU.

7. The communication apparatus of claim 6, wherein the indication to instruct a discard of RLC SDU is not generated by the apparatus if the RLC SDU including the discarded PDCP SDU is not buffered in the communication apparatus.

8. The communication apparatus of claim 5, wherein a value of the discard timer is indicated by a network.