Quality of service securing method and apparatus

• US 20070248028A1
• Filed: 12/21/2006
• Published: 10/25/2007
• Est. Priority Date: 04/19/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Soo-hong, Jang, Jeong-rok, Lee, Min-ho, Hwang, Cheol-ju, Yun, Won-dong, Kim, Han-sung, Kim, Young-keun, Choe, Yun-ju
• Granted Patent: US 8,520,558 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0036 arrangements specific to the receiver
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/263 Rate modification at the source after receiving feedback
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 28/0226 based on location or mobility handoff or reselection H04W36/00; mobile application services making use of the location of users or terminals H04W4/02
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• 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

A quality of service (QoS) securing apparatus and method using a communication protocol is provided. The QoS securing method is performed by a reception side that is receiving data from a transmission side. The method includes generating information about a changed communication environment according to a change in a communication environment of the reception side, and transmitting the information to the transmission side. An exchange of information about a communication environment using the communication protocol between the reception side and the transmission side can inform the transmission side about resources of the reception side, link characteristics, characteristics of a link on a transmission path, etc., thereby securing a QoS of data communication between the reception side and the transmission side.

Claims

1. A quality of service (QoS) securing method comprising:

generating information about a changed communication environment according to a change in a communication environment of reception side that is receiving data from a transmission side; and

transmitting the information to the transmission side.

2. The method according to claim 1, wherein the information about the changed communication environment comprises information about characteristics of a link of the changed communication environment and/or information about useable resources for processing data being received by the reception side in the changed communication environment.

3. The method according to claim 2, wherein the information about the link characteristics is information about characteristics of a link of a second network when the reception side performs a handover from a first network to the second network.

4. The method according to claim 3, wherein transmitting the information comprises transmitting the information about the characteristics of the link of the second network before the handover is performed.

5. The method according to claim 4, further comprising performing a handover when the reception side receives response information about the link characteristics from the transmission side.

6. The method according to claim 3, wherein the transmitting of the information comprises transmitting the information about the characteristics of the link of the second network after the handover is performed.

7. The method according to claim 2, wherein the information about the link characteristics includes information, about the characteristics of a link, that is added or corrected on a transmission path from the reception side and the transmission side.

8. The method according to claim 2, further comprising detecting the link characteristics from an access point (AP) or a router of a network to which the reception side belongs.

9. The method according to claim 2, wherein the information about the useable resources is about at least one of a CPU, a useable codec, a display resolution, a memory, and the size of a receiving buffer of a device of the reception side.

10. The method of claim 1, further comprising:

dividing the communication environment of the reception side into a plurality of levels according to the quality of the communication environment;

allocating a coefficient to each of the plurality of levels; and

wherein the transmitting of the information to the transmission side comprises transmitting the allocated coefficients to the transmission side.

26. A computer readable recording medium storing a computer readable program for executing a method of claim 1.

11. A quality of service (QoS) securing apparatus comprising:

a communication environment information generator generating information about a changed communication environment according to a change in a communication environment of a reception side that is receiving data from a transmission side; and

a transmitter transmitting the information about the changed communication environment to the transmission side.

12. The apparatus according to claim 11, wherein the information about the changed communication environment comprises information about characteristics of a link of the changed communication environment and/or information about useable resources for processing data being received by the reception side in the changed communication environment.

13. The apparatus according to claim 12, wherein the information about the link characteristics includes information about the characteristics of a link, that is added or corrected on a transmission path, from the reception side to the transmission side.

14. The apparatus according to claim 12, further comprising a link characteristics detector detecting the link characteristics from an AP or a router of a network to which the reception side belongs.

15. The apparatus of claim 11, wherein the communication environment generator divides the communication environment of the reception side into a plurality of levels according to a status of the communication environment and allocates a coefficient to each of the plurality of levels;

and

wherein the transmitter transmits the allocated coefficients to the transmission side.

16. A quality of service (QoS) securing method comprising:

transmitting data from a transmission side to a reception side;

receiving information about a communication environment of the reception side from the reception side; and

changing a QoS for transmission of the data based on the received information.

17. The method according to claim 16, wherein the information about the communication environment comprises information about characteristics of a link of the communication environment of the reception side and/or information about useable resources for processing data being received by the reception side in the communication environment of the reception side.

18. The method according to claim 17, wherein the changing of the QoS comprises changing forward error correction (FEC) of data to be transmitted to the reception side according to a change in bit error rate (BER) included in the information about the link characteristics.

19. The method according to claim 17, wherein the changing of the QoS comprises changing at least one of the number of frames per second, resolution, and compressibility of the data to be transmitted to the reception side according to a change in a data transmission speed included in the information about the link characteristics.

20. The method according to claim 16, further comprising:

generating response information indicating that the QoS for the transmission of the data has been changed based upon the information about the communication environment; and

transmitting the response information to the reception side.

27. A computer readable recording medium storing a computer readable program for executing a method of claim 16.

21. A quality of service (QoS) securing apparatus comprising:

a transmission side transmitting data to a reception side;

a communication environment information receiver receiving information about a communication environment of the reception side; and

a QoS controller changing a QoS based upon the information about the communication environment.

22. The apparatus according to claim 21, wherein the information about the communication environment comprises information about characteristics of a link of the communication environment of the reception side and/or information about useable resources for processing data being received by the reception side in the communication environment of the reception side.

23. The apparatus according to claim 21, wherein the QoS controller changes forward error correction (FEC) of data to be transmitted to the reception side according to a change in bit error rate (BER) included in the information about the link characteristics.

24. The apparatus according to claim 21, wherein the QoS controller changes at least one of a number of frames per second, resolution, and compressibility of the data to be transmitted to the reception side based upon a change in a data transmission speed included in the information about the link characteristics.

25. The apparatus according to claim 22, further comprising:

a response information generator generating response information indicating that the QoS for the transmission of the data has been based upon the information about the communication environment; and

a transmitter transmitting the response information to the reception side.

28. A method of securing QoS, comprising:

receiving information about a changed communication environment of a reception side;

adding or correcting the information based on characteristics of a link on a transmission path between the reception side and a transmission side;

transmitting the added or corrected information to the transmission side.

29. A quality of service (QoS) securing apparatus comprising:

a receiver to receive information about a changed communication environment of a reception side;

an updater to add or correct the information based on characteristics of a link on the transmission part between the reception side and the transmission side; and

a transmitter to transmit the added or corrected information to the transmission side.

30. The apparatus according to claim 29, wherein the apparatus is a router.

31. A router situated on a transmission path between a receiving side and a transmission side and receiving information about a changed communication environment transmitted from a reception side, comprising:

an updater to add or correct information about the changed communication environment of the reception side.

32. A method of securing quality of service (QoS), comprising:

informing a transmission side of a communication environment of a reception side; and

changing a QoS based on the communication environment.

33. A computer readable recordable medium encoded with instructions, the instructions comprising:

informing a transmission side of a communication environment of a reception side; and

changing a QoS based on the communication environment.

34. A computer readable recordable medium encoded with instructions, the instructions comprising:

receiving information about a changed communication environment of a reception site;

adding or correcting the information based on the characteristics of a link on a transmission path between the reception side and a transmission side; and

transmitting the added or corrected information to the transmission side.