Standby time improvements

• US 7,916,687 B2
• Filed: 10/04/2006
• Issued: 03/29/2011
• Est. Priority Date: 03/03/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jayaram, Ranjith, Deshpande, Manoj M., Nanda, Sanjiv, Meylan, Arnaud
• Primary Examiner(s): Phunkulh; Bob A
• Application Number:
  US11/538,774
• Publication Number:
  US 20070211745A1
• Time in Patent Office: 1,637 Days
• Field of Search: None
• US Class Current: 370/328
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Broadcast or multicast traffic is classified into different types of traffic and different transmission schedules associated with each of the different types of traffic. The different types of broadcast and multicast traffic may be implemented in an 802.11-based system where an access point is configured to classify broadcast and multicast traffic into different types and assign different transmission schedules to each of the different traffic types. An associated wireless station may thereby wake from a power save mode only at intervals corresponding to delivery times of the types of traffic that the wireless station has elected to receive. In some aspects the different types of broadcast and multicast traffic may comprise user plane traffic and control plane traffic.

Claims

1. A method of receiving broadcast or multicast traffic, comprising:

identifying different types of traffic that may be received, wherein different transmission schedules are associated with the different types of traffic;

selecting, from the different types of traffic that may be received, at least one type of traffic that is to be received and at least one type of traffic that is not to be received;

receiving each type of traffic selected to be received by transitioning from a power save state to an active state according to a time interval defined by the transmission schedule associated with each type of traffic selected to be received; and

not receiving each type of traffic selected not to be received by not transitioning from the power save state to the active state according to a time interval defined by the transmission schedule associated with each type of traffic selected not to be received.

2. The method of claim 1, wherein the method is performed in a wireless station operating in an 802.11 protocol based system.

3. The method of claim 1, wherein the time interval associated with each type of traffic selected to be received is a multiple of the time interval associated with each type of traffic selected not to be received.

4. The method of claim 1, wherein a user selects the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

5. The method of claim 1, further comprising performing a learning operation based on analysis of the received traffic to automatically select the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

6. The method of claim 1, further comprising associating with an access point to determine the different types of traffic and associated transmission schedules.

7. The method of claim 6, further comprising sending a query regarding availability of different types of traffic.

8. The method of claim 6, further comprising receiving beacons including indications of time intervals at which the different types of traffic are transmitted.

9. The method of claim 6, further comprising receiving beacons including an indication of an amount of time remaining before delivery of at least one of the different types of traffic.

10. The method of claim 1, wherein:

each of the transmission schedules is associated with a time interval; and

the time interval associated with at least one of the transmission schedules is a multiple of the time interval associated another one of the transmission schedules.

11. The method of claim 10, wherein:

a first time interval associated with delivery of a first type of the different types of traffic is a multiple of a delivery traffic indication map (DTIM) interval; and

a second time interval associated with delivery of a second type of the different types of traffic is longer than the first interval period and is a multiple of the DTIM interval.

12. The method of claim 1, further comprising receiving traffic classified into at least one of the different types of traffic based on at least one of the group consisting of:

a protocol type, a source port, a destination port, a source address, a destination address, a type of service, a frequency of receipt of traffic, and identification of an application associated with traffic.

13. The method of claim 1, further comprising receiving traffic classified into at least one of the different types of traffic based on a traffic learning operation.

14. A method of receiving broadcast or multicast traffic, comprising:

receiving at least one of a plurality of different types of broadcast or multicast traffic, wherein the different types of traffic comprise control plane traffic and user plane traffic, and different transmission schedules are associated with the different types of traffic;

waking from a power save state to receive the control plane traffic and not waking from the power save state to thereby not receive the user plane traffic;

receiving a user plane traffic indication transmitted in a delivery traffic indication map at a first time interval;

receiving a control plane traffic indication transmitted in a management traffic indication map at a second time interval; and

receiving the control plane traffic at intervals corresponding to the second time interval, wherein the second time interval is longer than and a multiple of the first time interval.

15. The method of claim 14, wherein the control plane traffic relates to at least one of the group consisting of:

connectivity, topology, path discovery, ARP, DHCP, presence, and paging.

16. The method of claim 14, wherein the user plane traffic comprises at least one of the group consisting of:

streaming data, audio, and video.

17. An apparatus, comprising:

a receiver configured to receive at least one of a plurality of different types of broadcast or multicast traffic, wherein different transmission schedules are associated with the different types of traffic;

a scheduler configured to schedule reception of the at least one type of traffic in accordance with at least one associated transmission schedule;

an identifier configured to identify the different types of traffic that may be received;

a selector configured to select, from the different types of traffic that may be received, at least one type of traffic that is to be received and at least one type of traffic that is not to be received; and

a state controller configured to;

transition the receiver from a power save state to an active state according to a time interval defined by the transmission schedule associated with each type of traffic selected to be received; and

not transition the receiver from the power save state to the active state according to a time interval defined by the transmission schedule associated with each type of traffic selected not to be received.

18. The apparatus of claim 17, wherein the apparatus is a mobile station operative in an 802.11 protocol based system.

19. The apparatus of claim 17, wherein the time interval associated with each type of traffic selected to be received is a multiple of the time interval associated with each type of traffic selected not to be received.

20. The apparatus of claim 17, further comprising a user interface adapted to receive input from a user to select the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

21. The apparatus of claim 17, further comprising a traffic analyzer adapted to perform a learning operation based on analysis of the received traffic to automatically select the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

22. The apparatus of claim 17, further comprising a media access controller adapted to associate with an access point to determine the different types of traffic and associated transmission schedules.

23. The apparatus of claim 17, wherein:

each of the transmission schedules is associated with a time interval; and

the time interval associated with at least one of the transmission schedules is longer than and a multiple of the time interval associated another one of the transmission schedules.

24. An apparatus for receiving broadcast or multicast traffic, comprising:

means for receiving at least one of a plurality of different types of broadcast or multicast traffic, wherein different transmission schedules are associated with the different types of traffic;

means for scheduling reception of the at least one type of traffic in accordance with at least one associated transmission schedule;

means for identifying the different types of traffic that may be received;

means for selecting, from the different types of traffic that may be received, at least one type of traffic that is to be received and at least one type of traffic that is not to be received; and

means for transitioning the means for receiving from a power save state to an active state according to a time interval defined by the transmission schedule associated with each type of traffic selected to be received and not transitioning the means for receiving from the power save state to the active state according to a time interval defined by the transmission schedule associated with each type of traffic selected not to be received.

25. The apparatus of claim 24, wherein the apparatus is a wireless station operative in a 802.11 protocol based system.

26. The apparatus of claim 24, wherein the time interval associated with each type of traffic selected to be received is longer than and a multiple of the time interval associated with each type of traffic selected not to be received.

27. The apparatus of claim 24, further comprising means for performing a learning operation based on analysis of the received traffic to automatically select the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

28. The apparatus of claim 24, wherein:

each of the transmission schedules is associated with a time interval; and

the time interval associated with at least one of the transmission schedules is longer than and a multiple of the time interval associated another one of the transmission schedules.

29. A non-transitory computer-readable medium including instructions stored thereon for causing a wireless station to:

identify different types of traffic that may be received;

wherein different transmission schedules are associated with the different types of traffic;

select, from the different types of traffic that may be received, at least one type of traffic that is to be received mid at least one type of traffic that is not to be received;

receive each type of traffic selected to be received by transitioning from a power save state to an active state according to a time interval defined by the transmission schedule associated with each type of traffic selected to be received; and

not receive each type of traffic selected not to be received by not transitioning from the power save state to the active state according to a time interval defined by the transmission schedule associated with each type of traffic selected not to be received.

30. The non-transitory computer-readable medium of claim 29, wherein the wireless station is operative in an 802.11 protocol based system.

31. The non-transitory computer-readable medium of claim 30, wherein the time interval associated with each type of traffic selected to be received is a multiple of the time interval associated with each type of traffic selected not to be received.

32. The non-transitory computer-readable medium of claim 30, wherein the instructions further cause the wireless station to perform a learning operation based on analysis of the received traffic to automatically select the at least one type of traffic that is to be received and the at least one type of traffic that is not to be received.

33. The non-transitory computer-readable medium of claim 29, wherein:

each of the transmission schedules is associated with a time interval; and

the time interval associated with at least one of the transmission schedules is a multiple of the time interval associated another one of the transmission schedules.

34. A method of providing classified broadcast or multicast traffic, comprising:

receiving broadcast or multicast traffic;

classifying the received traffic into different types of traffic;

associating different transmission schedules with the different types of traffic; and

transmitting the different types of traffic at different time intervals having different periodicities;

wherein a delivery traffic indication map (DTIM) beacon is transmitted at a first periodicity, the DTIM beacon providing an indication as to whether a first type of multicast or broadcast traffic will follow the DTIM beacon; and

a second beacon is transmitted at a second periodicity that is a multiple of the first periodicity, the second beacon providing an indication as to whether a second type of broadcast or multicast traffic will follow the second beacon.

35. The method of claim 34, further comprising transmitting beacons including indications of time intervals at which the different types of traffic are transmitted.

36. The method of claim 34, further comprising transmitting beacons including an indication of an amount of time remaining before delivery of at least one of the different types of traffic.

37. The method of claim 34, wherein the classifying is based on at least one of the group consisting of:

a protocol type, a source port, a destination port, a source address, a destination address, a frequency of receipt of traffic, a type of service, and identification of an application associated with traffic.

38. The method of claim 34, wherein the classifying comprises performing a learning operation based on analysis of received traffic.

39. The method of claim 34, wherein the different types of traffic comprise user plane traffic and control plane traffic.

40. The method of claim 39, further comprising transmitting the control plane traffic according to a first time interval and transmitting the user plane traffic according to a second time interval, wherein the first time interval is a multiple of the second time interval.

41. The method of claim 39, further comprising:

sending a user plane traffic indication in a delivery traffic indication map (DTIM) beacon at a first time interval;

sending a control plane traffic indication in a management traffic indication map (MTIM) beacon at a second time interval; and

sending the control plane traffic at intervals corresponding to the second time interval and sending the user plane traffic at intervals corresponding to the first time interval, wherein the second time interval is a multiple of the first time interval.

42. The method of claim 39, wherein the control plane traffic relates to at least one of the group consisting of:

connectivity, topology, path discovery, ARP, DHCP, presence, and paging.

43. The method of claim 39, wherein the user plane traffic comprises at least one of the group consisting of:

streaming data, audio, and video.

44. An apparatus comprising:

a receiver configured to receive broadcast or multicast traffic;

a classifier configured to classify the received traffic into different types of traffic;

a scheduler configured to associate different transmission schedules with the different types of traffic; and

a transmitter configured to transmit the different types of traffic at different intervals having different periodicities;

wherein a delivery traffic indication map (DTIM) beacon is transmitted at a first periodicity, the DTIM beacon providing an indication as to whether a first type of multicast or broadcast traffic will follow the DTIM beacon; and

a second beacon is transmitted at a second periodicity that is a multiple of the first periodicity, the second beacon providing an indication as to whether a second type of broadcast or multicast traffic will follow the second beacon.

45. The apparatus of claim 44, wherein the transmitter is further adapted to transmit beacons including:

indications of time intervals at which the different types of traffic are transmitted; and

an indication of an amount of time remaining before delivery of at least one of the different types of traffic.

46. The apparatus of claim 44, wherein the classifier is further adapted to classify the received traffic based on at least one of the group consisting of:

a protocol type, a source port, a destination port, a source address, a destination address, a frequency of receipt of traffic, a type of service, and identification of an application associated with traffic.

47. The apparatus of claim 44, wherein the classifier is further adapted to classify the received traffic by performing a learning operation based on analysis of received traffic.

48. The apparatus of claim 44, wherein the different types of traffic comprise user plane traffic and control plane traffic.

49. The apparatus of claim 48, wherein the transmitter transmits the control plane traffic according to a first time interval and the user plane traffic according to a second time interval, wherein the first time interval is a multiple of the second time interval.

50. The apparatus of claim 48, wherein the control plane traffic relates to at least one of the group consisting of:

connectivity, topology, path discovery, ARP, DHCP, presence, and paging, and the user plane traffic comprises at least one of the group consisting of;

streaming data, audio, and video.

51. An apparatus comprising:

means for receiving broadcast or multicast traffic;

means for classifying the received traffic into different types of traffic; and

means for associating different transmission schedules with the different types of traffic; and

means for transmitting the different types of traffic at different intervals having different periodicities;

wherein a delivery traffic indication map (DTIM) beacon is transmitted at a first periodicity, the DTIM beacon providing an indication as to whether a first type of multicast or broadcast traffic will follow the DTIM beacon; and

a second beacon is transmitted at a second periodicity that is a multiple of the first periodicity, the second beacon providing an indication as to whether a second type of broadcast or multicast traffic will follow the second beacon.

52. The apparatus of claim 51, wherein the means for transmitting further transmits beacons including:

indications of time intervals at which the different types of traffic are transmitted; and

an indication of an amount of time remaining before delivery of at least one of the different types of traffic.

53. The apparatus of claim 51, wherein the means for classifying further classifies the received traffic based on at least one of the group consisting of:

a protocol type, a source port, a destination port, a source address, a destination address, a frequency of receipt of traffic, a type of service, and identification of an application associated with traffic.

54. The apparatus of claim 51, wherein the means for classifying further classifies the received traffic by performing a learning operation based on analysis of received traffic.

55. The apparatus of claim 51, wherein the different types of traffic comprise user plane traffic and control plane traffic.

56. The apparatus of claim 55, further comprising means for transmitting the control plane traffic according to a first time interval and the user plane traffic according to a second time interval, wherein the first time interval is a multiple of the second time interval.

57. The apparatus of claim 55, wherein:

the control plane traffic relates to at least one of the group consisting of;

connectivity, topology, path discovery, ARP, DHCP, presence, and paging; and

the user plane traffic comprises at least one of the group consisting of;

streaming data, audio, and video.

58. The non-transitory computer-readable medium including instructions stored thereon for causing an access point to:

receive broadcast or multicast traffic;

classify the received traffic into different types of traffic;

associate different transmission schedules with the different types of traffic;

transmit the different types of traffic at different intervals having different periodicities; and

cause the access point to transmit a deliver3, traffic indication map (DTIM) beacon at a first periodicity, the DTIM beacon providing an indication as to whether a first type of multicast or broadcast traffic will follow the DTIM beacon; and

to transmit a second beacon at a second periodicity that is a multiple of the first periodicity, the second beacon providing an indication as to whether a second type of broadcast or multicast traffic will follow the second beacon.

59. The non-transitory computer readable medium of claim 58, wherein the instructions further cause the access point to transmit beacons including:

indications of time intervals at which the different types of traffic are transmitted; and

an indication of an amount of time remaining before delivery of at least one of the different types of traffic.

60. A non-transitory computer-readable medium including instructions stored thereon for causing an access point to:

receive broadcast or multicast traffic;

classify the received traffic into different types of traffic, wherein the different types of traffic comprise user plane traffic and control plane traffic;

associate different transmission schedules with the different types of traffic;

transmit the different types of traffic at different intervals having different periodicities; and

further cause the access point to transmit the control plane traffic according to a first time interval and the user plane traffic according to a second time interval, wherein the first time interval is a multiple of the second time interval.

61. The non-transitory computer-readable medium of claim 60, wherein:

the control plane traffic relates to at least one of the group consisting of;

connectivity, topology, path discovery, ARP, DHCP, presence, and paging; and

the user plane traffic comprises at least one of the group consisting of;

streaming data, audio, and video.