Header compression of multimedia data transmitted over a wireless communication system

• US 8,089,948 B2
• Filed: 05/13/2005
• Issued: 01/03/2012
• Est. Priority Date: 05/13/2004
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Garudadri, Harinath, Sagetong, Phoom, Hsu, Raymond Tah-Sheng
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): DUDA, ADAM K
• Application Number:
  US11/129,735
• Publication Number:
  US 20050259690A1
• Time in Patent Office: 2,426 Days
• Field of Search: 370/253, 370/349, 370/389, 370/392, 370/471, 370/474
• US Class Current: 370/349
• CPC Class Codes: H04L 47/36 by determining packet size, e.g. maximum transfer unit [MTU]
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/75 Media network packet handling
• CPC Class Codes: H04L 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/166 IP fragmentation; TCP segmentation
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/321 Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 19/102 characterised by the element, parameter or selection affected or controlled by the adaptive coding
• CPC Class Codes: H04N 19/115 Selection of the code volume for a coding unit prior to coding
• CPC Class Codes: H04N 19/124 Quantisation
• CPC Class Codes: H04N 19/152 by measuring the fullness of the transmission buffer
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/174 the region being a slice, e.g. a line of blocks or a group of blocks
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• 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 21/41407 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 21/44004 : involving video buffer management, e.g. video decoder buffer or video display buffer
• CPC Class Codes: H04N 21/4788 : communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• 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: H04N 21/6437 : Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 21/64707 : for transferring content from a first network to a second network, e.g. between IP and wireless
• CPC Class Codes: H04W 28/06 : Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/065 : using assembly or disassembly of packets
• CPC Class Codes: H04W 4/06 : Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/1263 : Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• CPC Class Codes: H04W 80/00 : Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/04 : Large scale networks; Deep hierarchical networks
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/181 : Transcoding devices; Rate adaptation devices

Abstract

Methods and apparatus are described for improving the transmission of multimedia data over wireless communication channels. These techniques include determining a physical layer packet size of the wireless communication system and determining a maximum size of a compressed header. Then, partitioning an information unit, wherein the size of the partitions are selected such that after a partition is encoded the aggregate size of the encoded partition and the compressed header are the size of the physical layer packet, or less. The techniques can be used for various types of information units, such as multimedia data, variable bit rate data streams, video streams, video teleconference stream, or voice over IP. The techniques can also be used with various over the air interfaces, such as, Global System for Mobile Communication (GSM), General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), or standards based on CDMA such as TIA/EIA-95-B (IS-95), TIA/EIA-98-C (IS-98), IS2000, HRDP, cdma2000, Wideband CDMA (WCDMA), and others.

Claims

1. A method of transmitting data over a wireless communication system, the method comprising:

determining, using a prrocessor, a physical layer packet size of the wireless communication system from a set of physical layer packet sizes related to data encoding rates available;

determining, using the processor, a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system; and

partitioning an information unit based on the physical layer packet size and maximum size of the compressed header, wherein partitions are sized such that after a partition is encoded an aggregate size of each encoded partition and an associated compressed header is no greater than the physical layer packet size.

2. A method as defined in claim 1, wherein the information unit comprises multimedia data.

3. A method as defined in claim 1, wherein the information unit comprises video data.

4. A method as defined in claim 1, wherein the header is compressed in accordance rich robust header compression techniques.

5. A method as defined in claim 1, wherein the header is compressed in accordance with zero-byte header compression techniques.

6. A method as defined in claim 1, wherein determining the size of the physical layer packet and the n-maximum size of the compressed header is determined by negotiation between participants in a communication session.

7. A method as defined in claim 1, wherein the wireless communication system is a CDMA system.

8. A method as defined in claim 1, wherein the wireless communication system is a GSM system.

9. A method as defined in claim 1, wherein the wireless communication system is an EDGE system.

10. A method as defined in claim 1, wherein the wireless communication system is a GPRS system.

11. A method of transmitting multimedia data over a wireless communication system, the method comprising:

determining, using a processor, a set of possible physical layer data packet sizes of available communication channels, each possible physical layer data packet size corresponding to an encoding rate;

selecting a physical layer packet size corresponding to a related encoding rate from the set of possible physical layer data packet sizes;

determining, using the processor, a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system;

partitioning a frame of multimedia data into partitions based on the physical layer packet size and maximum size of the compressed header, wherein partition sizes are selected so that an aggregate size of a partition plus the maximum size of the compressed header match the physical layer packet size; and

encoding the partition at the related encoding rate, appending the compressed header and transmitting the encoded partition with the appended header.

12. A method as defined in claim 11, wherein the multimedia data is a variable bit rate stream.

13. A method as defined in claim 11, wherein the multimedia data is a video stream.

14. A method as defined in claim 11, wherein determining the set of possible physical layer data packet sizes and the maximum size of the compressed header is determined by negotiation between participants in a communication session.

15. A method as defined in claim 11, wherein the communication channels are CDMA channels.

16. A method as defined in claim 11, wherein the communication channels are GSM channels.

17. A method as defined in claim 11, wherein the communication channels are EDGE channels.

18. A method as defined in claim 11, wherein the communication channels are GPRS channels.

19. A method as defined in claim 11, wherein the header is compressed in accordance with robust header compression techniques.

20. A method as defined in claim 11, wherein the header is compressed in accordance with zero byte header compression techniques.

21. A wireless communication device comprising:

a processor configured to determine possible data packet sizes of available communication channels from a set of data packet sizes related to data encoding rates available and a maximum size of a compressed header based on supported compression schemes identified as usable by the wireless communication device;

an encoder configured to partition multimedia data into partitions based on determined data packet size and maximum size of the compressed header, wherein partition sizes are selected so that an aggregate size of a partition plus maximum size of the compressed header match one possible data packet size, encode the partition at an encoding rate corresponding to the determined data packet size, and append the compressed header; and

a transmitter configured to transmit the partition with the appended compressed header.

22. A wireless communication device as defined in claim 21, wherein the multimedia data is a data stream.

23. A wireless communication device as defined in claim 21, wherein the multimedia data is a video stream.

24. A wireless communication device as defined in claim 21, wherein the communication channels are CDMA channels.

25. A wireless communication device as defined in claim 21, wherein the communication channels are GSM channels.

26. A wireless communication device as defined in claim 21, wherein the communication channels are GPRS channels.

27. A wireless communication device as defined in claim 21, wherein the communication channels are EDGE channels.

28. A wireless communication device as defined in claim 21, wherein the header is compressed in accordance with robust header compression techniques.

29. A wireless communication device as defined in claim 21, wherein the header is compressed in accordance with zero byte header compression techniques.

30. A non-transitory computer readable medium comprising computer executable instructions which, when executed, perform a method of encoding data comprising:

determining a physical layer packet size of a wireless communication system from a set of physical layer packet sizes related to data encoding rates available;

determining a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system; and

partitioning an information unit based on the physical layer packet size and maximum size of the compressed header, wherein partition sizes are selected such that after a partition is encoded an aggregate size of the encoded partition and the compressed header is no greater than the physical layer packet size.

31. A non-transitory computer readable media embodying a method of transmitting multimedia data over a wireless communication system, the method comprising:

determining a set of possible physical layer data packet sizes of available communication channels, each possible physical layer data packet size corresponding to an encoding rate;

selecting a physical layer packet size corresponding to a related encoding rate from the set of possible physical layer data packet sizes;

determining a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system;

partitioning a frame of multimedia data into partitions based on the physical layer packet size and maximum size of the compressed header, wherein partition sizes are selected so that an aggregate size of a partition plus the maximum size of the compressed header match the physical layer packet size; and

encoding the partition at the related encoding rate, appending the compressed header and transmitting the encoded partition with the appended header.

32. The non-transitory computer readable media as defined in claim 31, wherein the multimedia data is at least one of a variable bit rate stream or a video stream

33. The non-transitory computer readable media as defined in claim 31, wherein determining the set of possible physical layer data packet sizes and the maximum size of the compressed header is determined by negotiation between participants in a communication session.

34. The non-transitory computer readable media as defined in claim 31, wherein the communication channels are at least one of CDMA channels, GSM channels, EDGE channels or GPRS channels.

35. The non-transitory computer readable media as defined in claim 31, wherein the header is compressed in accordance with at least one of robust header compression techniques or zero byte header compression techniques.

36. An apparatus configured to transmit multimedia data over a wireless communication system, the apparatus comprising:

means for determining a set of possible physical layer data packet sizes of available communication channels, each possible physical layer data packet size corresponding to an encoding rate;

means for selecting a physical layer packet size corresponding to a related encoding rate from the set of possible physical layer data packet sizes;

means for determining a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system;

partitioning a frame of multimedia data into partitions based on the physical layer packet size and maximum size of the compressed header, wherein partition sizes are selected so that an aggregate size of a partition plus the maximum size of the compressed header match the physical layer packet size; and

means for encoding the partition at the related encoding rate, appending the compressed header and transmitting the encoded partition with the appended header.

37. The apparatus as defined in claim 36, wherein the multimedia data is at least one of a variable bit rate stream or a video stream.

38. The apparatus as defined in claim 36, wherein the means for determining the set of possible physical layer data packet sizes and the maximum size of the compressed header determines by negotiation between participants in a communication session.

39. The apparatus as defined in claim 36, wherein the communication channels are at least one of CDMA channels, GSM channels, EDGE channels or GPRS channels.

40. The apparatus as defined in claim 36, wherein the header is compressed in accordance with at least one of robust header compression techniques or zero byte header compression techniques.

41. An apparatus configured to transmit data over a wireless communication system, comprising:

means for determining a physical layer packet size of the wireless communication system from a set of physical layer packet sizes related to data encoding rates available;

means for determining a maximum size of a compressed header based on supported compression schemes identified as usable within the wireless communication system; and

means for partitioning an information unit based on the physical layer packet size and maximum size of the compressed header, wherein partitions are sized such that after a partition is encoded, an aggregate size of each encoded partition and an associated compressed header is no greater than the physical layer packet size.

42. The apparatus of claim 41, wherein the information unit comprises at least one of multimedia data or video data.

43. The apparatus of claim 41, wherein the header is compressed in accordance with at least one of robust header compression techniques or zero-byte header compression techniques.

44. The apparatus of claim 41, wherein the means for determining the physical layer packet size include means for determining the size of the physical layer packet and the maximum size of the compressed header by negotiation between participants in a communication session.

45. The apparatus of claim 41, wherein the wireless communication system is at least one of a CDMA system, a GSM system, an EDGE system or a GPRS system.