TCP DATA THROUGHOUT ENHANCEMENT FOR WLAN CLIENTS ON A WIRELESS LAN ROUTER

• US 20110116483A1
• Filed: 11/13/2009
• Published: 05/19/2011
• Est. Priority Date: 11/13/2009
• Status: Abandoned Application

• Current Assignee: Novatel Wireless Solutions (Inseego Corp.)
• Original Assignee: Novatel Wireless Solutions (Inseego Corp.)
• Inventors: Lee, Yong Sang, Kim, Seung Beom
• Application Number:
  US12/618,628
• Publication Number:
  US 20110116483A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2001/0097 Relays
• 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 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

A server may be bypassed in the context of retransmitting data packets, when such data packets are missing or lost due to interference or some other network error. Decreased throughput and other disadvantages associated with data packet retransmission are avoided by negating the need to transmit retransmission request packets to the server and retransmitting a missing/lost data packet from the server. Instead, retransmission request packets may be sent to a router, and the router may respond by directly retransmitting the missing/lost data packet to the client, where prior to retransmitting the missing/lost data packet, it is determined whether the data packet is a Transport Control Protocol or User Datagram Protocol packet, and proceeding with the retransmitting only if the data packets is a Transport Control Protocol packet.

Claims

1. A method of data packet retransmission, comprising:

determining that a data packet to be received is missing;

transmitting to a router, a request packet to request retransmission of the data packet; and

receiving the retransmitted data packet directly from the router.

2. The method of claim 1 further comprising, prior to retransmission of the data packet, determining whether the data packet comprises one of a Transport Control Protocol packet and a User Datagram Protocol packet, and retransmitting the data packet only if the data packet comprises the Transport Control Protocol packet.

3. The method of claim 1, wherein the request packet comprises a Transport Control Protocol acknowledgement packet.

4. The method of claim 1, wherein the data packet is received at a wireless Local Area Network client.

5. The method of claim 1, wherein prior to determining that the data packet to be received is missing, the data packet is received at the router from a server.

6. The method of claim 5 further comprising, saving the data packet in a buffer at the router.

7. A computer program product, embodied on a computer-readable medium, comprising machine-executable computer code configured to perform the processes of claim 1.

8. An electronic apparatus, comprising:

a processor; and

a memory unit operatively connected to the processor and including;

machine-executable computer code configured to determine that a data packet to be received is missing;

machine-executable computer code configured to transmit to a router, a request packet to request retransmission of the data packet; and

machine-executable computer code configured to receive the retransmitted data packet directly from the router.

9. The electronic apparatus of claim 8, wherein the memory unit further comprises machine-executable computer code configured to, prior to retransmission of the data packet, determine whether the data packet comprises one of a Transport Control Protocol packet and a User Datagram Protocol packet, and retransmit the data packet only if the data packet comprises the Transport Control Protocol packet.

10. The electronic apparatus of claim 8, wherein the request packet comprises a Transport Control Protocol acknowledgement packet.

11. The electronic apparatus of claim 8, wherein prior to determining that the data packet to be received is missing, the data packet is received at the router from a server.

12. The electronic apparatus of claim 11, wherein the memory unit further comprises machine-executable computer code configured to save the data packet in a buffer at the router.

13. A method of data packet retransmission, comprising:

receiving a data packet;

saving the data packet;

receiving a retransmission request packet indicative of a request to retransmit the data packet;

retransmitting the data packet in response to the request.

14. The method of claim 13, further comprising, prior to the retransmitting of the data packet, determining whether the data packet comprises one of a Transport Control Protocol packet and a User Datagram Protocol packet, and performing the retransmitting of the data packet only if the data packet comprises the Transport Control Protocol packet.

15. The method of claim 13, wherein the retransmission request packet comprises a Transport Control Protocol acknowledgement packet.

16. The method of claim 13, wherein the data packet is received from a server.

17. The method of claim 13, wherein the data packet is retransmitted directly to a wireless Local Area Network client.

18. The method of claim 13, wherein the data packet is saved at a router.

19. A computer program product, embodied on a computer-readable medium, comprising machine-executable computer code configured to perform the processes of claim 13.

20. An electronic apparatus, comprising:

a processor; and

a memory unit operatively connected to the processor and including;

machine-executable computer code configured to receive a data packet;

machine-executable computer code configured to save the data packet;

machine-executable computer code configured to receive a retransmission request packet indicative of a request to retransmit the data packet;

machine-executable computer code configured to retransmit the data packet in response to the request.

21. The electronic apparatus of claim 20, wherein the memory unit further comprises machine-executable computer code configured to, prior to the retransmission of the data packet, determine whether the data packet comprises one of a Transport Control Protocol packet and a User Datagram Protocol packet, and perform the retransmission of the data packet only if the data packet comprises the Transport Control Protocol packet.

22. The electronic apparatus of claim 20, wherein the retransmission request packet comprises a Transport Control Protocol acknowledgement packet.

23. The electronic apparatus of claim 20, wherein the data packet is received from a server.

24. The electronic apparatus of claim 20, wherein the data packet is retransmitted directly to a wireless Local Area Network client.

25. A system for retransmitting data packets, comprising:

a server configured to transmit a data packet;

a router configured to receive the data packet from the server, and store the data packet; and

a wireless Local Area Network client configured to receive the data packet upon a determination that the data packet is missing, the data packet being retransmitted directly from the router and in response to a retransmission request packet transmitted from the wireless Local Area Network client to the router.

26. The system of claim 25, wherein, prior to the data packet being retransmitted, the router determines whether the data packet comprises one of a Transport Control Protocol packet and a User Datagram Protocol packet, and perform the retransmission of the data packet only if the data packet comprises the Transport Control Protocol packet.

27. The system of claim 25, wherein the retransmission request packet comprises a Transport Control Protocol acknowledgement packet.