Terminal assisted WLAN access point rate adaptation

• US 20060256747A1
• Filed: 05/16/2005
• Published: 11/16/2006
• Est. Priority Date: 05/16/2005
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Jaakkola, Mikko
• Application Number:
  US11/133,657
• Publication Number:
  US 20060256747A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0033 arrangements specific to the transmitter
• CPC Class Codes: H04L 1/0079 Formats for control data H04L1/16 takes precedence; training sequences H04L25/00 and H04L27/00
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface

Abstract

A method and apparatus are provided for adapting a transmission rate for providing data in a downlink direction from a network element such as an access point (AP) in a wireless network to a terminal, wherein the method features the step of the terminal providing a message to the network element containing information to assist the network element in adapting the communication link, including one or more parameters related to the transmission rate or retransmission retry, in the downlink direction. In operation, the network element receives the message and adapts the communication link in the downlink direction accordingly based on the message.

Claims

1. A method for adapting a communication link for providing data in a downlink direction from a network element in a wireless network to a terminal, characterized in that the method comprises the step of:

the network element receiving a message from the terminal containing information to assist the network element in adapting the communication link in the downlink direction.

2. A method according to claim 1, wherein the network element adapts the transmission rate of the communication link accordingly based on the message.

3. A method according to claim 1, wherein the message contains information about the supported rates by the terminal, or a desired transmission rate being selected by the terminal.

4. A method according to claim 1, wherein the message is a terminal rate configuration containing information about a terminal rate configuration being requested by the terminal.

5. A method according to claim 1, wherein the message is a terminal conditions report containing information about current conditions of the terminal that affect the transmission rate, including an interference situation.

6. A method according to claim 4, wherein the message includes information about an interference source.

7. A method according to claim 4, wherein the network element is an access point (AP) that receives the message and adapts the transmission rate based on the current conditions of the terminal.

8. A method according to claim 1, wherein the message is an interference triggered renegotiation so as to reassociate with the network element.

9. A method according to claim 1, wherein the message includes information about a terminal specified rate adaptation set, including one or more transmission rates, re-tries, or some combination thereof, specific to the terminal.

10. A method according to claim 1, wherein the network element receives the message and optimizes transmission rate fallback policies so that the overall system can have the best possible performance under current conditions of the terminal.

11. A method according to claim 1, wherein the wireless network is a wireless local area network (WLAN) defined by the IEEE 802 Specification Protocol.

12. A method according to claim 1, wherein the terminal is a multimode terminal having multiple radios that can operates in a GSM network.

13. A method according to claim 12, wherein the multimode terminal has multiple radios.

14. A method according to claim 1, wherein the message is provided as part of an association process between the network element and the terminal.

41. A method according to one or more of claims 1-14, wherein the one or more steps of the method are performed in a computer program running on a processor or other suitable processing device in a network node or element in the network or system.

42. A method according to claim 41, wherein the network node or element is an access point in a wireless network.

43. A method according to claim 41, wherein the network node or element is a multimode terminal having multiple radios that can operates in a GSM network.

48. A method according to claim 1, wherein the message includes a sensitivity indication frame having a field containing information about the noise floor, Tx power, one or more interference characteristics, or some combination thereof.

49. A method according to claim 48, wherein the field for the one or more interference characteristics includes a field containing information about an interference starting point, an interference level, an interference burst length, or some combination thereof.

54. A method according to claim 1, wherein the message includes one or more communication link parameters which may be changed.

55. A method according to claim 54, wherein the one or more communications link parameters include a transmission rate parameter that defines the rate of transmission for the downlink connection.

56. A method according to claim 54, wherein the one or more communications link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

15. An access point (AP) for adapting a communication link for providing data in a downlink direction in a wireless network to a terminal, characterized in that

the AP receives a message from the terminal containing information to assist the AP in adapting the communication link in the downlink direction.

16. An access point (AP) according to claim 15, wherein the AP adapts the transmission rate of the communication link based on the information contained in the message.

17. An access point (AP) according to claim 15, wherein the message contains information about the supported rates by the terminal, or a desired transmission rate being selected by the terminal.

18. An access point (AP) according to claim 15, wherein the message is a terminal rate configuration containing information about a terminal rate configuration being requested by the terminal.

19. An access point (AP) according to claim 15, wherein the message is a terminal conditions report containing information about current conditions of the terminal that affect the transmission rate, including an interference situation.

20. An access point (AP) according to claim 19, wherein the message includes information about an interference source.

21. An access point (AP) according to claim 19, wherein the network element receives the message and adapts the transmission rate based on the current conditions of the terminal.

22. An access point (AP) according to claim 15, wherein the message is an interference triggered renegotiation so as to reassociate with the network element.

23. An access point (AP) according to claim 15, wherein the message includes information about a terminal specified rate adaptation set, including one or more transmission rates, re-tries, or some combination thereof, specific to the terminal.

24. An access point (AP) according to claim 15, wherein the network element receives the message and optimizes transmission rate fallback policies so that the overall system can have the best possible performance under current conditions of the terminal.

25. An access point (AP) according to claim 15, wherein the wireless network is a wireless local area network (WLAN) defined by the IEEE 802 Specification Protocol.

26. An access point (AP) according to claim 15, wherein the terminal is a multimode terminal having multiple radios that can operates in a GSM network.

27. An access point (AP) according to claim 15, wherein the terminal is a multimode terminal that can operates in a GSM network.

28. An access point (AP) according to claim 15, wherein the message is provided as part of an association process between the network element and the terminal.

50. An access point (AP) according to claim 15, wherein the message includes a sensitivity indication frame having a field containing information about the noise floor, Tx power, one or more interference characteristics, or some combination thereof.

51. An access point (AP) according to claim 50, wherein the field for the one or more interference characteristics includes a field containing information about an interference starting point, an interference level, an interference burst length, or some combination thereof.

57. An access point (AP) according to claim 15, wherein the message includes one or more communication link parameters which may be changed.

58. An access point (AP) according to claims 57, wherein the one or more communication link parameters include a transmission rate parameter that defines the rate of transmission for the downlink connection.

59. An access point (AP) according to claim 57, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

29. A terminal for receiving data in a communication link in a downlink direction in a wireless network from a network element such as an access point (AP) or other suitable element capable of adapting the transmission rate, characterized in that

the terminal provides a message to the network element containing information to assist the network element in adapting the communication link in the downlink direction.

30. A terminal according to claim 29, wherein the message contains information about the supported rates in the communication link by the terminal, or about a desired transmission rate in the communication link being selected by the terminal.

31. A terminal according to claim 29, wherein the message is a terminal rate configuration containing information about a terminal rate configuration being requested by the terminal.

32. A terminal according to claim 29, wherein the message is a terminal conditions report containing information about current conditions of the terminal that affect the transmission rate, including an interference situation.

33. A terminal according to claim 32, wherein the message includes information about an interference source.

34. A terminal according to claim 29, wherein the message is an interference triggered renegotiation so as to reassociate with the network element.

35. A terminal according to claim 29, wherein the message includes information about a terminal specified rate adaptation set, including one or more transmission rates, re-tries, or some combination thereof, specific to the terminal.

36. A terminal according to claim 29, wherein the information in the message enables the network element to optimize transmission rate fallback policies so that the overall system can have the best possible performance under current conditions of the terminal.

37. A terminal according to claim 29, wherein the wireless network is a wireless local area network (WLAN) defined by the IEEE 802 Specification Protocol.

38. A terminal according to claim 29, wherein the terminal is a multimode terminal having multiple radios that can operates in a GSM network.

39. A terminal according to claim 38, wherein the multimode terminal has multiple radios.

40. A terminal according to claim 29, wherein the message is provided as part of an association process between the network element and the terminal.

52. A terminal according to claim 29, wherein the message includes a sensitivity indication frame having a field containing information about the noise floor, Tx power, one or more interference characteristics, or some combination thereof.

53. A terminal according to claim 52, wherein the field for the one or more interference characteristics includes a field containing information about an interference starting point, an interference level, an interference burst length, or some combination thereof.

60. A terminal according to claim 29, wherein the message includes one or more communication link parameters which may be changed.

61. A terminal according to claims 60, wherein the one or more communication link parameters include

a transmission rate parameter that defines the rate of transmission for the downlink connection.

62. A terminal according to claim 60, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

44. A computer program product for a network node or element such as an access point (AP) for adapting a communication link for providing data in a downlink direction from a network element in a wireless network to a terminal, characterised in that

the computer program product adapts the communication link in the downlink direction based on information received in a message from the terminal.

63. A computer program product according to claim 44, wherein the message includes one or more communication link parameters which may be changed.

64. A computer program product according to claims 63, wherein the one or more communication link parameters include a transmission rate parameter that defines the rate of transmission for the downlink connection.

65. A computer program product according to claim 63, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

45. A computer program product for a terminal for receiving data in a communication link in a downlink direction in a wireless network from a network element such as an access point (AP) or other suitable element capable of adapting the transmission rate, characterized in that

the computer program product provides a message to the network element containing information to assist the network element in adapting the communication link in the downlink direction.

66. A computer program product according to claim 45, wherein the message includes one or more communication link parameters which may be changed.

67. A computer program product according to claims 66, wherein the one or more communication link parameters include a transmission rate parameter that defines the rate of transmissions for the downlink connection.

68. A computer program product according to claim 66, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

46. A module such as a chip for a network node or element such as an access point (AP) for adapting a communication link for providing data in a downlink direction from a network element in a wireless network to a terminal, characterised in that

the module adapts the communication link in the downlink direction based on information received in a message from the terminal.

69. A module according to claim 46, wherein the message includes one or more communication link parameters which may be changed.

70. A module according to claims 69, wherein the one or more communication link parameters include

a transmission rate parameter that defines the rate of transmissions for the downlink connection.

71. A module according to claim 69, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.

47. A module such as a chip for a terminal for receiving data in a communication link in a downlink direction in a wireless network from a network element such as an access point (AP) or other suitable element capable of adapting the communication link, characterized in that

the module provides a message to the network element containing information to assist the network element in adapting the communication link in the downlink direction.

72. A module according to claim 47, wherein the message includes one or more communication link parameters which may be changed.

73. A module according to claims 72, wherein the one or more communication link parameters include

a transmission rate parameter that defines the rate of transmissions for the downlink connection.

74. A module according to claim 72, wherein the one or more communication link parameters include a retry parameter that defines the number of retransmissions applied for the downlink connection.