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1. WO2004064424 - SYSTEME DE SERVICE DE PAQUETS ET PROCEDE DE COMMANDE DE LA TRANSMISSION PAR PAQUETS

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[ EN ]

Claims:

1. A method of transferring real-time data from a data source to a mobile device in communication with a communications network having a wired communication line and a wireless communication line, the method comprising:
receiving the real-time data from the data source over the wired communication line;
determining packet loss for the wired communication line to produce control information;
transmitting the control information to the data source; and
transmitting the real-time data to the mobile device based on the control information.

2. The method of claim 1 , further comprising:
determining quality of service data for at least one of the wired or wireless communication lines based on the control information.

3. The method of claim 2, further comprising:
adjusting transmission requirements for the real-time data based on the quality of service data.

4. The method of claim 3, wherein the adjusting comprises:
adjusting transmission size of real-time data packets comprising the real-time data.

5. The method of claim 3, wherein the adjusting comprises:
adjusting encoding mode of the real-time data.

6. The method of claim 3, wherein the adjusting is performed when real-time data is transmitted from the data source.

7. The method of claim 2, wherein the quality of service for the wireless communication line is determined based on a first quality of service associated with the communications network segment that controls communication of real-time data from the data source to the mobile device and a second quality of service associated with the wired communication line.

8. The method of claim 2, wherein the quality of service for the wireless communication line is determined based on first and second quality of service information.

9. The method of claim 8, wherein the first quality of service information is received from the mobile device.

10. The method of claim 8, wherein the second quality of service information is determined based on receiving loss packet information for the real-time data communicated over the wired communication line.

11. The method of claim 8, wherein the first quality of service information is determined based on number of packets lost during communication of the real-time data from the data source to the mobile device over the wired and wireless communication lines.

12. The method of claim 1, wherein the real-time data is received and transmitted over a real-time transport protocol (RTP).

13. The method of claim 1, wherein the real-time data is received and transmitted via a mobile communications network in communication with the data source.

14. The method of claim 1, wherein a UMTS terrestrial radio access network (UTRAN) determines the quality of service for the wireless communication line based on first packet loss information received from the mobile device and second packet loss information associated with receiving the data over the wired communication line.

15. The method of claim 14, wherein the UTRAN comprises a relay function module for depacketizing the real-time data received over the wired communication line to determining the second packet loss information.

16. The method of claim 15, wherein the relay function module packetizes the depacketized real-time data before transmitting it to the mobile device.

17. The method of claim 16, wherein the mobile device sends a feedback comprising the first packet loss information to the UTRAN after receiving the real-time data.

18. The method of claim 1, wherein the real-time data is encapsulated in real-time transport protocol (RTP) packets transmitted over user data gram protocol (UDP).

19. The method of claim 18, wherein the real-time data is transported via real-time transport control protocol (RTCP).

20. The method of claim 19 further comprising determining whether real-time data is being transmitted over the RTCP.

21. A real-time data communication system comprising:
a wired communication system connected to a data source; and
an interface system for wirelessly connecting the wired communication system to a mobile device;
wherein the interface system adjusts transmission requirements for real-time data based on first packet loss information associated with real-time data transmitted over the wired communication system.

_ 22. The system of claim 21, wherein a first quality of service is determined based on transmission of the real-time data from the data source to the interface system.

23. The system of claim 21, wherein a second quality of service is determined based on transmission of the real-time data from the interface system to the mobile device.

24. The system of claim 21, wherein the interface system comprises a relay module for processing data transmitted from the data source to the mobile device.

25. The system of claim 24, wherein if the data transmitted is not real-time data then the relay module does not process the data.

26. The system of claim 24, wherein if the data is not transmitted over real-time control protocol then the relay module does not process the data.

27. The system of claim 24, wherein a first quality of service is determined by the relay module by depacketizing real-time data transmitted over the real-time control protocol to determine packet loss in the wired communication system.

28. The system of claim 24, wherein a second quality of service is determined by the relay module based on feedback provided by mobile device about packet loss detected after receipt of real-time data by the mobile device.

29. The method of claim 21, wherein the real-time data is encapsulated in real-time transport protocol (RTP) packets transmitted over user data gram protocol (UDP).

30. The method of claim 21, wherein the real-time data is transported via real-time transport control protocol (RTCP).

31. A method of data communication comprising:
establishing a communication bearer between a data source and a mobile device over a communication network comprising wired and wireless communication segments; and
adjusting transmission of the real-time data based on quality of service over the wired and wireless communication segments, when data being communicated comprises real-time data and is being transmitted over a real-time communication protocol.

32. The method of claim 31, wherein a relay module determines the quality of service over the wireless communication segment by receiving feedback from the mobile device over a real-time control protocol and comparing the feed back with quality of service information for the wired communication segment.

33. The method of claim 32, wherein the relay module is incorporated into a communications network connecting the data source and the mobile device.

34. The method of claim 33, wherein a radio access bearer (RAB) is established between the communications network and the mobile device to provide the relay module with quality of service information.

35. A method of transferring real-time data from a data source to a mobile device connected to a wired communication line by way of a wireless communication line, wherein a Universal Terrestrial Radio Network (UTRAN) acts as a communication interface between the wired and wireless communication lines, the method comprising:
receiving the real-time data from the data source over the wired communication line;
transmitting control information associated with transmission quality of real-time data over the wired communication line to the data source; and
transmitting the real-time data to the mobile device over the wireless communication line based on the control information.

36. The method of claim 35 , further comprising:
determining quality of service for the wired communication line based on the control information.

37. The method of claim 35 , further comprising: adjusting transmission requirements for the real-time data based on the quality of service for the wired communication line.

38. The method of claim 37, wherein the adjusting comprises:
adjusting transmission size of real-time data packets comprising the real-time data.

39. The method of claim 37, wherein the adjusting comprises:
adjusting encoding mode of the real-time data.

40. The method of claim 37, wherein the adjusting is performed when real-time data is transmitted from the data source.