SYSTEM FOR PERMITTING CONTROL OF THE PURGING OF A NODE B BY THE SERVING RADIO NETWORK CONTROLLER

• US 20130301417A1
• Filed: 07/22/2013
• Published: 11/14/2013
• Est. Priority Date: 05/10/2002
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Terry, Stephen E., Chao, Yi-Ju, Miller, James M.
• Granted Patent: US 8,867,452 B2
• Time in Patent Office: Days
• US Class Current: 370/236
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04L 43/065 related to network devices
• 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 47/34 ensuring sequence integrity, e.g. using sequence numbers
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0247 based on conditions of the access network or the infrastructure network central resource management H04W28/16
• CPC Class Codes: H04W 28/12 using signalling between network elements
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 36/02 Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 8/02 Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 : Access point controller devices

Abstract

A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC.

Claims

1. A radio network controller (RNC) comprising:

at least one device configured to send a data frame associated with a high-speed downlink shared channel (HS-DSCH) to a NodeB, wherein the data frame includes an information element that requests a purge of all packet data units (PDUs) associated with a user equipment (UE) in a transmission priority queue in the Node B.

2. The RNC of claim 1 wherein the message is transmitted in response to a HS-DSCH cell change of the UE.

3. The RNC of claim 1 the message is transmitted in response to a radio link control (RLC) reset.

4. The RNC of claim 1 wherein the UE and the Node B communicate in an acknowledged mode (AM) to ensure the in-sequence delivery of protocol data units (PDUs).

5. The RNC of claim 1 wherein the information element is a single bit that requests the purge.

6. A Node B comprising:

a transmission priority queue configured for storing packet data units (PDUs) awaiting transmission to a user equipment (UE);

at least one device configured to receive a data frame associated with a high-speed downlink shared channel (HS-DSCH) from a radio network controller (RNC), wherein the data frame includes an information element that requests a purge of all PDUs associated with the UE in the transmission priority queue; and

the at least one device configured to purge all PDUs from the transmission priority queue associated with the UE.

7. The Node B of claim 6 wherein the message is received in response to a HS-DSCH cell change of the UE.

8. The Node B of claim 6 wherein the message is received in response to a radio link control reset.

9. The Node B of claim 6 wherein the UE and the Node B communicate in an acknowledged mode (AM) to ensure the in-sequence delivery of PDUs.

10. The Node B of claim 6 wherein the information element is a single bit that requests the purge.

11. The Node B of claim 6 wherein the receipt of the message initiates the purge of all PDUs associated with the UE in the transmission priority queue.

12. The Node B of claim 6 wherein the transceiver is further configured to transmit a buffer purge acknowledgement to the RNC confirming the purging of the PDUs associated with the UE in the transmission priority queue.