Method for filtering redundant data packets

• US 20030086415A1
• Filed: 09/26/2002
• Published: 05/08/2003
• Est. Priority Date: 10/02/2001
• Status: Abandoned Application

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Schueler, Joerg, Mueckenheim, Jens, Bernhard, Urs Peter, Gruhl, Stefan
• Application Number:
  US10/255,251
• Publication Number:
  US 20030086415A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• 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 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16

Abstract

The invention proposes a method for improving network performance of a data packet switched network which encompasses at least one unit for sending data packets, at least one unit for receiving data packets, and at least one network element for controlling and/or monitoring data packet traffic between said sending and said receiving unit whereby in case of at least one redundancy of packet occurs within said network, said redundant packets are filtered out from said network prior to receipt of the receiving unit.

Claims

1. A method for improving network performance, comprising the steps of:

monitoring data packets sent from at least one sending unit through at least one network element to at least one receiving unit; and

filtering out at least one redundant data packet prior to the redundant data packet being received by the at least one receiving unit.

2. The method of claim 1 wherein the network is a wireless network based on TCP/IP-protocol standard.

3. The method of claim 1 wherein filtering of the redundant packets comprises discarding the redundant packets at said network element.

4. The method of claim 1 wherein the step of monitoring comprises a search for packets queuing and having a same source and/or destination address and/or a same source and destination port numbers and/or a same sequence number and/or identical packet length and/or packet content.

5. The method of claim 1 wherein the step of monitoring comprises a determining of retransmitted data packets and/or new packets.

6. The method of claim 1 wherein the step of monitoring comprises a determining of redundant packets using acknowledgement and/or unacknowledgement and/or time-out signals corresponding to the data packets.

7. The method of claim 1 wherein the step of filtering comprises acknowledging and/or discarding of data packets.

8. The method of claim 1 wherein the step of filtering comprises replacing of retransmitted packets within a catch located at the network element.