Method for adjusting data transmission speed of a voice on demand service system

• US 20030110506A1
• Filed: 08/08/2002
• Published: 06/12/2003
• Est. Priority Date: 10/16/2001
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation), LG Telecom Incorporated (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation), LG Telecom Incorporated (LG Corporation)
• Inventors: Kim, Hyung-Jung
• Application Number:
  US10/214,836
• Publication Number:
  US 20030110506A1
• Time in Patent Office: Days
• US Class Current: 725/95
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64738 Monitoring network characteristics, e.g. bandwidth, congestion level data switched network analysis H04L41/14; monitoring functioning in data switched networks H04L43/0817; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 7/17336 Handling of requests in head-ends

Abstract

A method for adjusting data transmission speed in a VOD (video on demand) service system, wherein video data from a VOD server is transmitted to a mobile communication terminal in accordance with a VOD service request is provided. In accordance with one aspect of the invention, the method comprises analyzing power control information transmitted between a base station and a mobile communication terminal, wherein the base station provides the means of communication between the mobile communication terminal and a VOD server. The transmission speed of video data transmitted to the mobile communication terminal from the VOD server is then adjusted based on the power control information.

Claims

1. A method for adjusting data transmission speed in a VOD (video on demand) service system, wherein video data from a VOD server is transmitted to a mobile communication terminal in accordance with a VOD service request, the method comprising:

analyzing power control information transmitted between a base station and a mobile communication terminal, wherein the base station provides the means of communication between the mobile communication terminal and a VOD server; and

changing transmission speed of video data transmitted to the mobile communication terminal from the VOD server, based on the power control information.

2. The method of claim 1, wherein the power control information includes data reception state of the mobile communication terminal.

3. The method of claim 1, wherein the VOD server periodically receives power control information from the base station.

4. A method for varying data transmission speed of a VOD service system, comprising:

transmitting power control information from a mobile communication terminal to a base station;

requesting power control information from the base station by a VOD server; and

changing transmission speed of video data transmitted from the VOD server to the mobile communication terminal in accordance with the power control information received from the base station.

5. The method of claim 4, wherein the base station updates power control information.

6. The method of claim 4, wherein the power control information includes data reception state of the mobile communication terminal.

7. The method of claim 4, wherein the VOD server periodically receives power control information from the base station.

8. A method for varying data transmission speed of a VOD service system, comprising:

detecting a change in video data reception state in a mobile communication terminal;

inserting power control information into a superior protocol packet and transmitting the superior protocol packet to a VOD server when the reception state of the video data changes; and

adjusting the transmission speed of video data transmitted by the VOD server to the mobile communication terminal based on the power control information included in the transmitted superior protocol packet.

9. The method of claim 8, wherein the mobile communication terminal constructs and transmits a superior protocol packet when the data reception state changes.

10. A method of adjusting video data transmission speed between a VOD server and a mobile communication terminal, the method comprising:

establishing a connection between a VOD server and a mobile communication terminal via a base station;

requesting video service from the VOD server;

receiving video data at a first speed;

calculating power control information based on data reception state of the mobile communication terminal; and

transmitting the power control information to the VOD server to allow the VOD server to adjust the data transmission speed.

11. The method of claim 10, further comprising:

determining if data reception state of the mobile terminal has changed, based on the power control information; and

changing the data transmission speed from a first speed to a second speed based on the power control information.

12. The method of claim 11 wherein the second speed is less than the first speed, if the data reception state has deteriorated.

13. The method of claim 11 wherein the second speed is greater than the first speed, if the data reception state has improved.

14. The method of claim 10, wherein the power control information is transmitted to the VOD server, in response to a request for the power control information from the VOD server.

15. The method of claim 10, wherein the power control information is calculated by the mobile communication terminal.

16. The method of claim 10, wherein power control information is calculated by the base station.

17. The method of claim 10, wherein the data reception state is calculated by the mobile communication terminal.

18. The method of claim 10, wherein the data reception state is calculated by the base station.

19. The method of claim 10, wherein data reception state is forwarded to the base station by the mobile communication terminal.

20. The method of claim 10, wherein the power control information is forwarded to the VOD server by the base station.

21. The method of claim 10, wherein the reception state is calculated based on packet error rate and signal to noise ration.

23. The method of claim 21, wherein the power control information is transmitted via a superior protocol packet.

24. The method of claim 21, wherein the connection between the VOD server and the mobile communication terminal is established via a base station.

25. The method of claim 21, wherein the power control information is forwarded to the VOD server, in response to a request from the VOD server.

22. A method of adjusting video data transmission speed between a VOD server and a mobile communication terminal, the method comprising:

establishing a connection between a VOD server and a mobile communication terminal;

requesting video service from the VOD server;

receiving video data at a first speed;

calculating power control information based on data reception state of the mobile communication terminal;

transmitting the power control information to the VOD server to allow the VOD server to adjust the data transmission speed in accordance with a change in data reception state; and

receiving video at a second speed, if it is determined that the data reception state has changed.