COMMUNICATION DEVICE AND RECONFIMETHOD AND APPARATUS FOR HIGH DEFINITION VIDEO WIRELESS TRANSMISSION

• US 20130036445A1
• Filed: 06/12/2012
• Published: 02/07/2013
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: CHOU, Yu-Shen, HUANG, Ching-Yao, WU, Tung-Yu
• Granted Patent: US 8,627,384 B2
• Time in Patent Office: Days
• US Class Current: 725/81
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 65/70 Media network packetisation

Abstract

A High Definition (HD) video wireless transmission method for transmitting a data packet for a video frame of an HD video is provided. The method includes: receiving the video frame which comprises a video frame size; acquiring a payload length and a Minimal Required Transmission Time (MRTT) associated with the video frame, wherein the MRTT is a minimal time bound for transmitting the video frame to a receiving end; performing partitioning to the video frame for acquiring the data packet according to the payload length; and performing scheduling to the data packet according to the MRTT, and the scheduled data packet is transmitted to the receiving end.

Claims

1. A high definition video wireless transmission method for transmitting a data packet for a video frame of a high definition video, comprising:

receiving the video frame;

acquiring a payload length and a Minimum Required Transmission Time related to the video frame, wherein the Minimum Required Transmission Time is a minimum time bound for transmitting the video frame to a receiving end;

dividing the video frame for acquiring the data packet according to the payload length;

scheduling the data packet according to the Minimum Required Transmission Time; and

transmitting the scheduled data packet to the receiving end.

2. The method of claim 1, wherein the video frame comprises a video frame size, and the step of acquiring the Minimum Required Transmission Time comprises:

adjusting the payload length and a Modulation and Coding Scheme according to the video frame size and a signal to noise ratio.

3. The method of claim 2, wherein the Modulation and Coding Scheme is acquired from a conversion table according to the signal to noise ratio.

4. The method of claim 3, wherein the Minimum Required Transmission Time is the minimum time bound for transmitting the video frame, and the Minimum Required Transmission Time satisfies the requirement of a target frame error rate, wherein the target frame error rate is a frame error rate when displaying the high definition video without a video frame error.

5. The method of claim 3, further comprising:

acquiring the Minimum Required Transmission Time and the payload length according to an equation as follows;

6. The method of claim 5, wherein the symbol error rate is acquired according to the signal to noise ratio and the Modulation and Coding Scheme.

7. The method of claim 1, further comprising:

determining whether the received video frame is timed out according to a delay constraint; and

removing the video frame when the video frame is timed out.

8. A high definition video wireless transmission apparatus for transmitting a data packet for a video frame of a high definition video, comprising:

a video stream module, configured to receive the video frame;

a medium access control (MAC) control module, configured to acquire a payload length and a Minimum Required Transmission Time related to the video frame, wherein the Minimum Required Transmission Time is a minimum time bound for transmitting the video frame to a receiving end;

a packetization unit, configured to divide the video frame for acquiring the data packet according to the payload length; and

a scheduler, configured to schedule the data packet according to the Minimum Required Transmission Time, wherein the scheduled data packet is outputted to a physical layer for transmission to the receiving end.

9. The high definition video wireless transmission apparatus of claim 8, wherein the video frame comprises a video frame size, and the medium access control (MAC) control module acquires the Minimum Required Transmission Time by adjusting the payload length and a Modulation and Coding Scheme according to the video frame size and a signal to noise ratio.

10. The high definition video wireless transmission apparatus of claim 9, wherein the medium access control (MAC) control module acquires the Modulation and Coding Scheme from a conversion table according to the signal to noise ratio.

11. The high definition video wireless transmission apparatus of claim 10, wherein the Minimum Required Transmission Time is the minimum time bound for transmitting the video frame, and the Minimum Required Transmission Time satisfies the requirement of a target frame error rate, wherein the target frame error rate is a frame error rate when displaying the high definition video without a video frame error.

12. The high definition video wireless transmission apparatus of claim 11, wherein the medium access control (MAC) control module acquires the Minimum Required Transmission Time and the payload length according to an equation as follows:

13. The high definition video wireless transmission apparatus of claim 12, wherein the symbol error rate is acquired according to the signal to noise ratio and the Modulation and Coding Scheme.

14. The high definition video wireless transmission apparatus of claim 8, further comprising:

a video stream buffer unit, configured to determine whether the received video frame is timed out according to a delay constraint, wherein the video frame is removed when the video frame is timed out.