OPTIMIZED SELECTION OF TRANSMISSION PROTOCOL RESPECTING THRESHOLDS

• US 20110096849A1
• Filed: 06/29/2009
• Published: 04/28/2011
• Est. Priority Date: 07/02/2008
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Aust, Andreas Matthias, Siemens, Eduard, Brocke, Jens, Kubsch, Stefan, Glaeser, Frank, Koehler, Ralf
• Granted Patent: US 8,649,304 B2
• Time in Patent Office: Days
• US Class Current: 375/259
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• 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 69/165 Combined use of TCP and UDP protocols; selection criteria therefor

Abstract

In the method for management of data transmissions in a network, switching means are provided, by means of which a change can be carried out between a first data transmission type and a second data transmission type, as alternative data transmission types between a transmitter and a receiver. The change is carried out on the basis of at least one respectively predetermined criterion. The first data transmission type corresponds to a transport protocol based on rate-based overload control. The second data transmission type corresponds to a transport protocol based on RTT-based overload control.

Claims

1. Method for management of data transmissions in a network, in which switching means are provided, by means of which a change, which is carried out on the basis of at least one respectively predetermined criterion, can be carried out between a first data transmission type, for which a transport protocol based on rate-based overload control is used, and a second data transmission type, for which an RTT-based overload control protocol is used, as alternative data transmission types between a transmitter and a receiver.

2. Method according to claim 1, wherein the second data transmission type is a TCP link.

3. Method according to claim 1, wherein, while one of the two data transmission types is being used, a monitoring device detects and assesses at least one characteristic variable of the network, with a decision being made to change from the transmission type currently being used to the respective other transmission type on the basis of the assessment.

4. Method according to claim 3, wherein the characteristic variable is an applicable data rate.

5. Method according to claim 3, wherein the characteristic variable is the RTT delay.

6. Method according to claim 3, wherein the characteristic variable is the data packet loss.

7. Method according to claim 3, wherein a change from the first data transmission type to the second data transmission type is initiated when the value of the characteristic variable exceeds a predetermined first threshold value, and in that a change from the second data transmission type to the first data transmission type is initiated when the value of the characteristic variable falls below a predetermined second threshold value.

8. Method according to claim 1, wherein the transmitter and the receiver communicate with one another using a signalling procedure, with the signalling procedure comprising the transmission of a change initialization message from the transmitter to the receiver, with the change initialization message signalling to the receiver that a change must be initiated from the currently used data transmission type to the respective other data transmission type.

9. Method according to claim 8, wherein the transmitter and the receiver negotiate at least one of the threshold values with one another, and the change is carried out automatically.

10. Method according to claim 8, wherein the signalling procedure comprises acknowledgement of the change initialization message by the receiver.

11. Method according to claim 7, wherein, after reaching the first threshold value, the receiver is caused to monitor the second data transmission type and to periodically check new data packets, with the receiver being caused to switch to the second data transmission type after reception of the first data packet transmitted by means of the second data transmission type and after reception of the last data packet transmitted by means of the first data transmission type.

12. Apparatus for management of data transmissions in a network, in particular for carrying out the method according to claim 1, comprising switching means by means of which a change, which is carried out on the basis of at least one respectively predetermined criterion, can be carried out between a first data transmission type, for which a transport protocol based on rate-based overload control is used, and a second data transmission type, for which an RTT-based overload control protocol is used, as alternative data transmission types between a transmitter and a receiver.

13. Apparatus according to claim 12, wherein the apparatus comprises a monitoring device by means of which at least one characteristic variable of the network can be detected and can be assessed while one of the two data transmission types is being used, with the monitoring device being designed in order to make a decision to change from the data transmission type currently being used to the respective other data transmission type on the basis of the assessment.

14. Apparatus according to claim 12, wherein signalling means are provided, which are designed to carry out a signalling procedure, in the course of which the transmitter and the receiver communicate with one another, with the signalling procedure comprising the transmission of a change initialization message from the transmitter to the receiver, with the change initialization message signalling to the receiver that a change must be initiated from the currently used data transmission type to the respective other data transmission type.

15. Apparatus according to claim 14, wherein the signalling means are designed to carry out a signalling procedure which comprises acknowledgement of the change initialization message by the receiver.

16. Apparatus according to claim 12, wherein the receiver is designed, after reaching the first threshold value, to monitor the second data transmission type and to periodically check new data packets, and in that the receiver is designed to switch to the second data transmission type after reception of the first data packet transmitted by means of the second data transmission type and after reception of the last data packet transmitted by means of the first data transmission type.