Method and system for video data packetization for transmission over wireless channels

• US 20070230461A1
• Filed: 03/22/2007
• Published: 10/04/2007
• Est. Priority Date: 03/29/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Singh, Harkirat, Shao, Huai-Rong, Ngo, Chiu
• Application Number:
  US11/728,244
• Publication Number:
  US 20070230461A1
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/34 ensuring sequence integrity, e.g. using sequence numbers
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/6181 involving transmission via a mobile phone network arrangements for providing broadcast or conference services to substation in data switching networks in combination with wireless systems H04L12/189; wireless uplink channel access H04W74/004
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

A method and system for transmitting video information from a sender to a receiver over wireless channels, by inputting a frame of video information at the sender, packetizing the video information and transmitting the video packet from the sender to the receiver over a wireless channel. Packetizing the video information is performed by segmenting the frame into one or more segments of video information, constructing a data payload from one of the segments, constructing a video header including information describing said one segment, forming a video packet from the video header and the data payload. The video header in each video packet uniquely defines the video information in the data payload of the video packet for the receiver to reconstruct the video frame for proper display of the data payload in a video stream.

Claims

1. A method of transmitting video information from a sender to a receiver over wireless channels, comprising:

inputting a frame of video information at the sender;

packetizing the video information by;

segmenting the frame into one or more segments of video information;

constructing a data payload for a packet from one of the segments;

constructing a video header including information describing said one segment, wherein the video header uniquely defines the video information in the data payload;

forming a video packet from the video header and the data payload; and

transmitting the video packet from the sender to the receiver over a wireless channel.

2. The method of claim 1 wherein transmitting the video packet from the sender to the receiver further comprises transmitting the video packet from the sender to the receiver over a high data-rate channel.

3. The method of claim 2 further comprising the step of the receiver sending an acknowledgment for the packet to the sender over a low data-rate channel.

4. The method of claim 3 wherein:

transmitting the video packet from the sender to the receiver over a wireless channel further comprises transmitting the video packet from the sender to the receiver by directional transmission beams over the high-rate channel; and

receiving an acknowledgement includes receiving the acknowledgement from an directional transmission by the receiver over the low-rate channel.

5. The method of claim 1 wherein transmitting the video packet from the sender to the receiver further comprises adding a MAC header, a cyclic redundancy checksum (CRC) to the video packet to generate a MAC packet, and transmitting the MAC packet to the receiver.

6. The method of claim 1 further comprising the steps of:

receiving the video packet at the receiver; and

utilizing the information in the video header of the video packet to retrieve data from the video packet data payload and recreate video information of the frame.

7. The method of claim 1 wherein the video header in each video packet defines the video information in the data payload of the video packet for the receiver to reconstruct the video frame for proper display of the data payload in a video stream.

8. The method of claim 7 wherein the video header comprises a media adaptation control field which includes a video frame start indicator that indicates whether the video packet data payload is the start of a video frame or field.

9. The method of claim 8 wherein the media adaptation control field further includes partitioning mode information that indicates a manner of pixel partitioning in frame segmentation for the packet payload.

10. The method of claim 8 wherein the media adaptation control field further includes encoding mode information that indicates the manner of any encoding of the video packet data payload by the sender.

11. The method of claim 7 wherein the video header further comprises video frame number information which, for progressive video information, indicates a sequence number of the video frame which the data payload of the video packet belongs to.

12. The method of claim 7 wherein the video header further comprises video frame number information which, for interlaced video information, indicates an even frame number for a packet in a first field of an interlaced frame, and an odd frame number for a packet in a second field of an interlaced frame.

13. The method of claim 8 wherein the video header further comprises position information in the video frame which the video packet data payload starts from.

14. The method of claim 8 wherein the video header further comprises a playback deadline timestamp which, for interlaced video information, indicates the sampling instant of a field to which the data payload of the video packet belongs to, thereby allowing the receiver to recreate proper display timing of the data payload in a video stream.

15. The method of claim 8 wherein the video header further comprises length information indicating the length of the data payload of the video packet.

16. A method of transmitting video information from a sender to a receiver over wireless channels, comprising the steps of:

inputting a frame of video information at the sender;

packetizing the video information by;

segmenting the frame into one or more segments of video information;

constructing a data payload for a packet from one of the segments;

constructing a video header including information describing said one segment;

forming a video packet from the video header and the data payload; and

transmitting the video packet from the sender to the receiver by directional transmission beams over a wireless channel;

wherein the video header in each video packet uniquely identifies the video information in the data payload of the video packet for the receiver to recreate the video information of the frame.

17. The method of claim 16 wherein the video header comprises a media adaptation control field which includes video frame start indicator that indicates whether the video packet data payload is the start of a video frame or field.

18. The method of claim 17 wherein the media adaptation control field further includes partitioning mode information that indicates the manner of pixel partitioning in segmenting a frame into packets.

19. The method of claim 18 wherein the media adaptation control field further includes encoding mode information that indicates any encoding of the video packet data payload by the sender.

20. The method of claim 16 wherein the video header further comprises video frame number information which, for progressive video information, indicates a sequence number of the video frame which the data payload of the video packet belongs to.

21. The method of claim 20 wherein the video header further comprises video frame number information which, for interlaced video information, indicates an even frame number for a packet in a first field of an interlaced frame and an odd frame number for a packet in a second field of an interlaced frame.

22. The method of claim 21 wherein the video header further comprises position information in the video frame which the video packet data payload starts from.

23. The method of claim 22 wherein the video header further comprises a playback deadline timestamp which indicates the playback deadline of the video data payload.

24. The method of claim 23 wherein the video header further comprises length information indicating the length of the data payload of the video packet.

25. The method of claim 24 further comprising the steps of:

receiving the video packet at the receiver; and

utilizing the information in the video header of the video packet to retrieve data from the video packet data payload and recreate video information of the frame.

26. The method of claim 16 wherein the video information in the frame comprises video pixels representing uncompressed video information.

27. The method of claim 16 wherein the same frame format is used for interlaced and progressive video information.

28. A transmitter for transmission of one or more video frames to a receiver over wireless channels, comprising:

a packetizer configured to segment a frame of video information into one or more segments, and construct a video packet including a data payload from one of the segments, and a video header including information describing said one segment, wherein the video header uniquely defines the video information in the data payload; and

a communication module configured to transmit the video packet from the sender to the receiver over a wireless channel.

29. The transmitter of claim 28 wherein the communication module is configured to transmit the video packet from the sender to the receiver over a high data-rate channel.

30. The transmitter of claim 29 wherein the receiver sends an acknowledgment for the packet to the sender over a low data-rate channel.

31. The transmitter of claim 30 wherein the communication module is configured to transmit the video packet to the receiver by directional transmission beams over the high-rate channel, and to receive an acknowledgement from the receiver from a directional transmission by the receiver over the low data-rate channel.

32. The transmitter of claim 28 wherein the communication module is further configured to add a MAC header, a cyclic redundancy checksum (CRC) to the video packet to generate a MAC packet, and to transmit the MAC packet to the receiver.

33. The transmitter of claim 28 wherein the receiver utilizes the information in the video header of the video packet to retrieve data from the video packet data payload and recreate video information of the frame.

34. The transmitter of claim 28 wherein the video header in each video packet uniquely defines the video information in the data payload of the video packet for the receiver to reconstruct the video frame for proper display of the data payload in a video stream.

35. The transmitter of claim 34 wherein the video header comprises a media adaptation control field which includes a video frame start indicator that indicates whether the video packet data payload is the start of a video frame or field.

36. The transmitter of claim 35 wherein the media adaptation control field further includes partitioning mode information that indicates a manner of pixel partitioning in frame segmentation for the packet payload.

37. The transmitter of claim 35 wherein the media adaptation control field further includes encoding mode information that indicates the manner of any encoding of the video packet data payload by the sender.

38. The transmitter of claim 35 wherein the video header further comprises video frame number information which, for progressive video information, indicates a sequence number of the video frame which the data payload of the video packet belongs to.

39. The transmitter of claim 34 wherein the video header further comprises video frame number information which, for interlaced video information, indicates an even frame number for a packet in a first field of an interlaced frame and an odd frame number for a packet in a second field of an interlaced frame.

40. The transmitter of claim 35 wherein the video header further comprises position information in the video frame which the video packet data payload starts from.

41. The transmitter of claim 35 wherein the video header further comprises a playback deadline timestamp which, for interlaced video information, indicates the sampling instant of a field to which the data payload of the video packet belongs to, thereby allowing the receiver to recreate proper display timing of the data payload in a video stream.

42. The transmitter of claim 35 wherein the video header further comprises length information indicating the length of the data payload of the video packet.

43. The transmitter of claim 28 wherein the video information in the frame comprises video pixels representing uncompressed high definition video information.

44. A receiver for receiving one or more video packets over wireless channels, comprising:

a communication module configured to receive a video packet including a payload containing a segment of video information from a video frame, the video packet further including a video header including information describing said segment, wherein the video header uniquely defines the video information in the data payload; and

a depacketizer configured to extract video information from the video packet and uses the information in the video header to reconstruct the video frame.

45. The receiver of claim 44 wherein the communication module is configured to receive the video packet from a transmitter over a high data-rate channel.

46. The receiver of claim 45 wherein the communication module is further configured to send back an acknowledgment for the video packet to the transmitter over a low data-rate channel.

47. The receiver of claim 46 wherein the communication module is configured to receive the video packet from the transmitter via directional transmission beams over the high-rate channel, and to transmit back the acknowledgement to the transmitter by directional transmission over the low-rate channel.

48. The receiver of claim 44 wherein the video packet further includes a MAC header and a cyclic redundancy checksum (CRC).

49. The receiver of claim 44 wherein the depacketizer is further configured to utilize the information in the video header of the video packet to retrieve data from the video packet payload and recreate video information of the frame.

50. The receiver of claim 44 wherein the video header in each video packet uniquely defines the video information in the data payload of the video packet for the receiver to reconstruct the video frame for proper display of the data payload in a video stream.

51. The receiver of claim 50 wherein the video header comprises a media adaptation control field which includes a video frame start indicator that indicates whether the video packet data payload is the start of a video frame or field.

52. The receiver of claim 51 wherein the media adaptation control field further includes partitioning mode information that indicates a manner of pixel partitioning in frame segmentation for the packet payload.

53. The receiver of claim 51 wherein the media adaptation control field further includes encoding mode information that indicates the manner of any encoding of the video packet data payload by the sender.

54. The receiver of claim 51 wherein the video header further comprises video frame number information which, for progressive video information, indicates a sequence number of the video frame which the data payload of the video packet belongs to.

55. The receiver of claim 50 wherein the video header further comprises video frame number information which, for interlaced video information, indicates an even frame number for a packet in a first field of an interlaced frame and an odd frame number for a packet in a second field of an interlaced frame.

56. The receiver of claim 51 wherein the video header further comprises position information in the video frame which the video packet data payload starts from.

57. The receiver of claim 51 wherein the video header further comprises a playback deadline timestamp which, for interlaced video information, indicates the sampling instant of a field to which the data payload of the video packet belongs to, thereby allowing the receiver to recreate proper display timing of the data payload in a video stream.

58. The receiver of claim 51 wherein the video header further comprises length information indicating the length of the data payload of the video packet.