Transmission control protocol (TCP) throughput optimization in mobile wireless networks

Patent metadata

Field	Value
Publication number	US-10237798-B2
Application number	US-201615263532-A
Country	US
Kind code	B2
Filing date	Sep 13, 2016
Priority date	Jul 8, 2011
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A device establishes a first transmission control protocol (TCP) connection with a client device associated with a wireless network, and establishes a second TCP connection with a server device associated with the wireless network. The device also provides a first TCP window size to the client device via the first TCP connection, and provides a second TCP window size to the server device via the second TCP connection, where the first TCP window size is different than the second TCP window size.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a device, a first indication of starting handover associated with a client device of a wireless network;
stopping, by the device, downlink traffic to the client device based on the first indication, wherein the downlink traffic includes traffic to be sent to the client device;
storing the downlink traffic, received from a server device of the wireless network, in a buffer associated with the device;
receiving, by the device, a second indication of completing the handover associated with the client device; and
resuming, by the device, the downlink traffic to the client device based on the second indication.

2. The method of claim 1 , further comprising:
providing the downlink traffic, stored in the buffer, to the client device when the second indication is received.

3. The method of claim 1 , further comprising:
throttling the downlink traffic received from the server device based on a size of the buffer.

4. The method of claim 3 , wherein throttling the downlink traffic received from the server device includes:
delaying transmission of transmission control protocol (TCP) acknowledgment packets to the server device, wherein the delayed transmission of the TCP acknowledgment packets causes the server device to decrease transmission of the downlink traffic.

5. The method of claim 3 , wherein throttling the downlink traffic received from the server device includes:
reporting artificial packet loss to the server device, wherein the artificial packet loss causes the server device to decrease transmission of the downlink traffic.

6. The method of claim 1 , further comprising:
establishing multiple TCP connections with the client device, based on the first indication.

7. The method of claim 6 , further comprising:
providing, by the device, a first TCP window size to the client device via a first TCP connection among the multiple TCP connections; and
providing, by the device, a second TCP window size to the client device via a second TCP connection among the multiple TCP connections,
wherein the first TCP window size controls a flow of traffic between the client device and the device, and the second TCP window size controls a flow of traffic between the server device and the device.

8. The method of claim 7 , wherein the first TCP window size is different than the second TCP window size.

9. The method of claim 1 , wherein the handover is performed with a base station.

10. The method of claim 9 , further comprising providing the handover from the base station to a mobility management entity device allocated between the client device and the device.

11. A device, comprising:
a memory to store a plurality of instructions; and
a processor to execute instructions in the memory to:
receive a first indication of starting handover associated with a client device of a wireless network,
stop downlink traffic to the client device based on the first indication, wherein the downlink traffic includes traffic to be sent to the client device,
store the downlink traffic, received from a server device of the wireless network, in a buffer associated with the memory,
receive a second indication of completing the handover associated with the client device, and
resume the downlink traffic to the client device based on the second indication.

12. The device of claim 11 , wherein the processor is further to execute instructions in the memory to:
provide the downlink traffic, stored in the buffer, to the client device when the second indication is received.

13. The device of claim 11 , wherein the processor is further to execute instructions in the memory to:
throttle the downlink traffic received from the server device based on a size of the buffer.

14. The device of claim 13 , wherein, when throttling the downlink traffic received from the server device, the processor is further to execute instructions in the memory to:
delay transmission of transmission control protocol (TCP) acknowledgment packets to the server device, wherein the delayed transmission of the TCP acknowledgment packets causes the server device to decrease transmission of the downlink traffic.

15. The device of claim 13 , wherein, when throttling the downlink traffic received from the server device, the processor is further to execute instructions in the memory to:
report artificial packet loss to the server device, wherein the artificial packet loss causes the server device to decrease transmission of the downlink traffic.

16. The device of claim 11 , wherein the processor is further to execute instructions in the memory to:
establish multiple TCP connections with the client device, based on the first indication.

17. The device of claim 16 , wherein the processor is further to execute instructions in the memory to:
provide, by the device, a first TCP window size to the client device via a first TCP connection among the multiple TCP connections; and
provide, by the device, a second TCP window size to the client device via a second TCP connection among the multiple TCP connections,
wherein the first TCP window size controls a flow of traffic between the client device and the device, and the second TCP window size controls a flow of traffic between the server device and the device.

18. The device of claim 17 , wherein the first TCP window size is different than the second TCP window size.

19. The device of claim 11 , wherein the handover is performed with a base station.

20. The device of claim 19 , wherein the processor is further to execute instructions in the memory to:
provide the handover from the base station to a mobility management entity device allocated between the client device and the device.

Assignees

• Verizon Patent & Licensing Inc

Inventors

• Kotecha Lalit R
• Yang Jin

Classifications

• H04L69/163

  In-band adaptation of TCP data exchange; In-band control procedures · CPC title

• H04L47/40

  using split connections · CPC title

• H04W36/16 Primary

  Performing reselection for specific purposes · CPC title

• H04L47/196

  Integration of transport layer protocols, e.g. TCP and UDP · CPC title

• H04L47/27

  Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets · CPC title