HEADER COMPRESSION FOR RELAY NODES

• US 20110249610A1
• Filed: 09/28/2010
• Published: 10/13/2011
• Est. Priority Date: 11/06/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ho, Sai Yiu Duncan, Agashe, Parag Arun, Ulupinar, Fatih
• Granted Patent: US 8,787,242 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• 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 84/047 using dedicated repeater stations
• CPC Class Codes: H04W 92/20 between access points

Abstract

Methods and apparatuses are provided that facilitate compressing packet headers for communicating among access points. An access point can advertise compression profiles to one or more disparate access points, and the one or more disparate access points can select at least one compression profile for compressing/decompressing packets related to the one or more disparate access points and/or devices communicating therewith. The one or more disparate access points can notify the access point of the selected compression profile, a compression context identifier, and/or static data related to identifying associated packets. In this regard, the access point can compress packets that have the associated static data according to the compression profile and compression context identifier. Similarly, the access point can decompress packets from the one or more disparate access points based on the compression context identifier.

Claims

1. A method for wireless communication, comprising:

receiving one or more available compression profiles from an upstream access point;

selecting a compression profile from the one or more available compression profiles;

generating a compression context identifier for the compression profile; and

transmitting an indication of the compression profile, the compression context identifier, and static data for identifying one or more headers, to the upstream access point.

2. The method of claim 1, further comprising:

receiving a compressed packet from the upstream access point along with the compression context identifier; and

decompressing the compressed packet based at least in part on determining the compression profile based at least in part on the compression context identifier.

3. The method of claim 2, wherein the decompressing is further based at least in part on retrieving the static data based at least in part on the compression context identifier, and associating the static data with at least one header in the compressed packet.

4. The method of claim 2, further comprising decompressing at least a portion of non-static data in the compressed packet.

5. The method of claim 1, further comprising receiving an acknowledgement of receiving the indication of the compression profile, the compression context identifier, and the static data from the upstream access point.

6. The method of claim 5, further comprising compressing one or more packets according to the compression profile based at least in part on the receiving the acknowledgement.

7. The method of claim 6, further comprising compressing at least a portion of non-static data in the one or more packets.

8. The method of claim 1, further comprising signaling to the upstream access point to remove the indication of the compression profile, the compression context identifier, and the static data.

9. The method of claim 1, further comprising initializing a timer upon transmitting the indication of the compression profile, the compression context identifier, and the static data to the upstream access point, wherein the timer relates to a period of time during which a compressed packet including the compression context identifier is expected.

10. The method of claim 9, further comprising retransmitting the indication of the compression profile, the compression context identifier, or the static data to the upstream access point based at least in part on expiration of the timer.

11. The method of claim 1, wherein the one or more headers relate to routing a packet to a relay node, and the static data comprises an internet protocol (IP) address or a tunnel endpoint identifier (TEID) related to the relay node.

12. The method of claim 1, wherein the one or more headers relate to routing a packet to a gateway, and the static data comprises an internet protocol (IP) address or a tunnel endpoint identifier (TEID) related to the gateway.

13. An apparatus for compressing packet headers, comprising:

at least one processor configured to;

obtain indications of one or more available compression profiles from an upstream access point;

determine a compression profile based at least in part on the indications of one or more available compression profiles;

correlate the compression profile with a compression context identifier and static data for identifying one or more routing headers; and

transmit an indication of the compression profile, the compression context identifier, and the static data to the upstream access point; and

a memory coupled to the at least one processor.

14. The apparatus of claim 13, wherein the at least one processor is further configured to:

receive a compressed packet from the upstream access point along with the compression context identifier; and

decompress the compressed packet based at least in part on determining the compression profile based at least in part on the compression context identifier.

15. The apparatus of claim 14, wherein the at least one processor decompresses further based at least in part on obtaining the static data based at least in part on the compression context identifier and associating the static data with at least one routing header in the compressed packet.

16. The apparatus of claim 13, wherein the at least one processor is further configured to receive an acknowledgement of receiving the indication of the compression profile, the compression context identifier, and the static data from the upstream access point.

17. The apparatus of claim 16, wherein the at least one processor is further configured to compress one or more packets according to the compression profile based at least in part on the acknowledgement.

18. The apparatus of claim 13, wherein the at least one processor is further configured to signal to the upstream access point to remove the indication of the compression profile, the compression context identifier, and the static data.

19. An apparatus for compressing packet headers, comprising:

means for selecting a compression profile from one or more available compression profiles advertised at an upstream access point;

means for associating the compression profile with a compression context identifier; and

means for transmitting an indication of the compression profile, the compression context identifier, and static data for identifying one or more headers, to the upstream access point.

20. The apparatus of claim 19, further comprising:

means for receiving a compressed packet from the upstream access point along with the compression context identifier; and

means for decompressing the compressed packet based at least in part on determining the compression profile based at least in part on the compression context identifier.

21. The apparatus of claim 20, wherein the means for decompressing decompresses further based at least in part on retrieving the static data based at least in part on the compression context identifier and associating the static data with the one or more headers.

22. The apparatus of claim 19, wherein the means for transmitting receives an acknowledgement of receiving the indication of the compression profile, the compression context identifier, and the static data from the upstream access point.

23. The apparatus of claim 22, further comprising means for compressing one or more packets according to the compression profile based at least in part on the acknowledgement.

24. The apparatus of claim 19, wherein the means for transmitting further signals to the upstream access point to remove the indication of the compression profile, the compression context identifier, and the static data.

25. A computer program product for compressing packet headers, comprising:

a computer-readable medium, comprising;

code for causing at least one computer to obtain indications of one or more available compression profiles from an upstream access point;

code for causing the at least one computer to determine a compression profile based at least in part on the indications of one or more available compression profiles;

code for causing the at least one computer to correlate the compression profile with a compression context identifier and static data for identifying one or more routing headers; and

code for causing the at least one computer to transmit an indication of the compression profile, the compression context identifier, and the static data to the upstream access point.

26. The computer program product of claim 25, wherein the computer-readable medium further comprises:

code for causing the at least one computer to receive a compressed packet from the upstream access point along with the compression context identifier; and

code for causing the at least one computer to decompress the compressed packet based at least in part on determining the compression profile based at least in part on the compression context identifier.

27. The computer program product of claim 26, wherein the code for causing the at least one computer to decompress decompresses further based at least in part on obtaining the static data based at least in part on the compression context identifier and associating the static data with at least one routing header in the compressed packet.

28. The computer program product of claim 25, wherein the computer-readable medium further comprises code for causing the at least one computer to receive an acknowledgement of receiving the indication of the compression profile, the compression context identifier, and the static data from the upstream access point.

29. The computer program product of claim 28, wherein the computer-readable medium further comprises code for causing the at least one computer to compress one or more packets according to the compression profile based at least in part on the acknowledgement.

30. The computer program product of claim 25, wherein the computer-readable medium further comprises code for causing the at least one computer to signal to the upstream access point to remove the indication of the compression profile, the compression context identifier, and the static data.

31. An apparatus for compressing packet headers, comprising:

a compression profile selecting component for determining a compression profile from one or more available compression profiles advertised at an upstream access point;

a compression context generating component for associating the compression profile with a compression context identifier; and

a compression parameter specifying component for transmitting an indication of the compression profile, the compression context identifier, and static data for identifying one or more headers, to the upstream access point.

32. The apparatus of claim 31, further comprising:

a packet communicating component for receiving a compressed packet from the upstream access point along with the compression context identifier; and

a header compressing component for decompressing the compressed packet based at least in part on determining the compression profile based at least in part on the compression context identifier.

33. The apparatus of claim 32, wherein the header compressing component decompresses further based at least in part on retrieving the static data based at least in part on the compression context identifier and associating the static data with the one or more headers.

34. The apparatus of claim 31, wherein the compression parameter specifying component receives an acknowledgement of receiving the indication of the compression profile, the compression context identifier, and the static data from the upstream access point.

35. The apparatus of claim 34, further comprising a header compressing component for compressing one or more packets according to the compression profile based at least in part on the acknowledgement.

36. The apparatus of claim 31, wherein the compression parameter specifying component further signals to the upstream access point to remove the indication of the compression profile, the compression context identifier, and the static data.

37. A method of wireless communication, comprising:

signaling one or more compression profiles available for compressing packet headers;

receiving an indication of a compression profile in the one or more compression profiles, a compression context identifier, and static data; and

associating the compression context identifier with the static data and the compression profile to facilitate compressing or decompressing packet headers.

38. The method of claim 37, further comprising compressing a header of one or more packets according to the compression profile based at least in part on identifying at least a portion of the static data in the header.

39. The method of claim 38, wherein the compressing includes associating the compression context identifier with the header.

40. The method of claim 39, wherein the compressing includes removing at least a portion of the static data from the header.

41. The method of claim 38, further comprising compressing non-static data in the header.

42. The method of claim 37, further comprising decompressing a header of one or more packets according to the compression profile based at least in part on locating the compression context identifier in the header.

43. The method of claim 42, wherein the decompressing includes inserting the static data in the header based at least in part on locating the compression context identifier in the header.

44. The method of claim 42, further comprising decompressing at least a portion of non-static data in the header.

45. An apparatus for compressing packet headers, comprising:

at least one processor configured to;

signal one or more compression profiles available for compressing packet headers;

obtain an indication of a compression profile in the one or more compression profiles, a compression context identifier, and static data; and

associate the compression context identifier with the static data and the compression profile to facilitate compressing or decompressing packet headers; and

a memory coupled to the at least one processor.

46. The apparatus of claim 45, wherein the at least one processor is further configured to compress a header of one or more packets according to the compression profile based at least in part on identifying at least a portion of the static data in the header.

47. The apparatus of claim 46, wherein the at least one processor compresses the header based at least in part on associating the compression context identifier with the header.

48. The apparatus of claim 47, wherein the at least one processor compresses the header further based at least in part on removing the static data from the header.

49. The apparatus of claim 45, wherein the at least one processor is further configured to decompress the header of one or more packets according to the compression profile based at least in part on locating the compression context identifier in the header.

50. The apparatus of claim 49, wherein the at least one processor decompresses the header at least in part by inserting the static data corresponding to the compression context identifier in the header.

51. An apparatus for compressing packet headers, comprising:

means for signaling one or more compression profiles available for compressing packet headers; and

means for receiving an indication of a compression profile in the one or more compression profiles, a compression context identifier, and static data.

52. The apparatus of claim 51, further comprising means for compressing a header of one or more packets according to the compression profile based at least in part on identifying at least a portion of the static data in the header.

53. The apparatus of claim 52, wherein the means for compressing compresses based at least in part on associating the compression context identifier with the header.

54. The apparatus of claim 53, wherein the means for compressing compresses based at least in part on removing at least a portion of the static data from the header.

55. The apparatus of claim 51, further comprising means for decompressing a header of one or more packets according to the compression profile based at least in part on locating the compression context identifier in the header.

56. The apparatus of claim 55, wherein the means for decompressing decompresses at least in part by inserting the static data in the header based at least in part on locating the compression context identifier in the header.

57. A computer program product for compressing packet headers, comprising:

a computer-readable medium, comprising;

code for causing at least one computer to signal one or more compression profiles available for compressing packet headers;

code for causing the at least one computer to obtain an indication of a compression profile in the one or more compression profiles, a compression context identifier, and static data; and

code for causing the at least one computer to associate the compression context identifier with the static data and the compression profile to facilitate compressing or decompressing packet headers.

58. The computer program product of claim 57, wherein the computer-readable medium further comprises code for causing the at least one computer to compress a header of one or more packets according to the compression profile based at least in part on identifying at least a portion of the static data in the header.

59. The computer program product of claim 58, wherein the code for causing the at least one computer to compress compresses the header based at least in part on associating the compression context identifier with the header.

60. The computer program product of claim 59, wherein the code for causing the at least one computer to compress compresses the header further based at least in part on removing the static data from the header.

61. The computer program product of claim 57, wherein the computer-readable medium further comprises code for causing the at least one computer to decompress the header of one or more packets according to the compression profile based at least in part on locating the compression context identifier in the header.

62. The computer program product of claim 61, wherein the code for causing the at least one computer to decompress decompresses the header at least in part by inserting the static data in the header.

63. An apparatus for compressing packet headers, comprising:

a compression advertising component for signaling one or more compression profiles available for compressing packet headers; and

a compression parameter receiving component for obtaining an indication of a compression profile in the one or more compression profiles, a compression context identifier, and static data.

64. The apparatus of claim 63, further comprising a header compressing component for compressing a header of one or more packets according to the compression profile based at least in part on identifying at least a portion of the static data in the header.

65. The apparatus of claim 64, wherein the header compressing component compresses based at least in part on associating the compression context identifier with the header.

66. The apparatus of claim 65, wherein the header compressing component compresses based at least in part on removing at least a portion of the static data from the header.

67. The apparatus of claim 63, further comprising a header compressing component for decompressing a header of one or more packets according to the compression profile based at least in part on locating the compression context identifier in the header.

68. The apparatus of claim 67, wherein the header compressing component decompresses at least in part by inserting the static data in the header based at least in part on locating the compression context identifier in the header.