Relay

• US 20080031174A1
• Filed: 06/29/2007
• Published: 02/07/2008
• Est. Priority Date: 06/30/2006
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Zheng, Haihong, Maheshwari, Shashikant, Saifullah, Yousuf
• Application Number:
  US11/819,968
• Publication Number:
  US 20080031174A1
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A relay for use in a communications network. The relay is configured to receive data from and transmit data to at least one higher level node and receive data from and transmit data to at least one lower level node. The relay includes a processor configured to control the relay so that the relay is configured to enter a power saving mode.

Claims

1. A relay for use in a communications network, wherein the relay comprises:

a processor configured to control the relay to enter a power saving mode,

wherein said relay is configured to receive data from and transmit data to at least one higher level node and receive data from and transmit data to at least one lower level node.

2. A relay as claimed in claim 1, wherein the processor is configured in the power saving mode to not receive any messages from the at least one higher level node.

3. A relay as claimed in claim 2, wherein the processor is configured in the power saving mode to not transmit any messages to the at least one higher level node.

4. A relay as claimed in claim 2, wherein the processor is further configured in the power saving mode to receive any messages from the at least one lower level node.

5. A relay as claimed in claim 1, wherein the processor is configured to detect the at least one lower level node is in a lower level node power saving mode.

6. A relay as claimed in claim 5, wherein the processor is configured to transmit a message to the at least one higher level node requesting the relay to enter a power saving mode.

7. A relay as claimed in claim 5, wherein the processor is further configured to detect the lower level node power saving mode sleep period and/or receive period.

8. A relay as claimed in claim 7, wherein the processor is further configured to control the relay to enter the power saving mode when the at least one lower level node is not in the receive period.

9. A relay as claimed in claim 1, wherein the processor is configured to receive a message from the higher level node to enter the power saving mode for a specified period.

10. A relay as claimed in claim 1, wherein the processor is further configured to communicate to at least two lower level nodes, and wherein the processor is arranged to detect that all of the at least two lower level nodes are in a lower level node power saving mode.

11. A relay as claimed in claim 10, wherein the processor is further configured to detect the lower level node power saving receive periods for all of the lower level nodes.

12. A relay as claimed in claim 11, wherein the processor is further configured to control the relay to enter the power saving mode when at least one of the at least two lower level nodes is not in the receive period.

13. A relay as claimed in claim 10, wherein the processor is further configured detect a period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period.

14. A relay as claimed in claim 13, wherein the processor is further configured to transmit a message to the at least one higher level node requesting a reduction of the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period.

15. A relay as claimed in claim 13, wherein the processor is further configured to transmit a message to the at least one higher level node requesting at least one of the first and second lower level node power saving mode receive periods is modified, so that the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period is reduced.

16. A relay as claimed in claim 13, wherein the processor is further configured to transmit a message to at least one of the first and second lower level nodes requesting at least one of the respective first and second lower level node power saving mode receive periods is modified, so that the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period is reduced.

33. A communications system comprising a relay station as claimed in claim 1.

17. A base station for use in a communications network, wherein the base station comprises:

a processor configured to transmit a message to at least one relay, requesting the at least one relay to enter a power saving mode,

wherein said base station is configured to receive data from and transmit data to at least one relay directly and further configured to receive data from and transmit data to at least one user equipment via the at least one relay.

18. A base station as claimed in claim 17, wherein the at least one relay is configured in the power saving mode to not receive any messages from the base station.

19. A base station as claimed in claim 17, wherein the at least one relay is configured in the power saving mode to not transmit any messages to the base station.

20. A base station as claimed in claim 17, wherein the at least one relay is configured in the power saving mode to receive any messages from the user equipment.

21. A base station as claimed in claim 17, wherein the base station processor is configured to detect the at least one user equipment is in a lower level node power saving mode.

22. A base station as claimed in claim 17, wherein the base station processor is configured to receive a message from the relay requesting the relay to enter a power saving mode.

23. A base station as claimed in claim 21, wherein the base station processor is further configured to detect the at least one user equipment power saving mode receive period.

24. A base station as claimed in claim 23, wherein the base station processor is further configured to transmit a message to the relay requesting the at least one relay to enter the power saving mode when the at least one user equipment is not in the receive period.

25. A base station as claimed in claim 17, wherein the base station processor is configured to communicate to at least two user equipment via the at least one relay, and wherein the base station processor is further configured to detect that all of the at least two user equipment are in a user equipment power saving mode.

26. A base station as claimed in claim 25, wherein the base station processor is further configured to detect the user equipment power saving receive periods for all of the user equipment.

27. A base station as claimed in claim 26, wherein the base station processor is further configured to transmit a message to the relay to request the relay to enter the power saving mode when at least one of the at least two lower level nodes is not in the receive period.

28. A base station as claimed in claim 25, wherein the base station processor is further configured to detect a period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period.

29. A base station as claimed in claim 28, wherein the base station processor is further configured to reduce the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period.

30. A base station as claimed in claim 28, wherein the base station processor is further configured to modify at least one of the first and second user equipment power saving mode receive periods, so that the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period is reduced.

31. A base station as claimed in claim 28, wherein the base station processor is further configured to transmit a message to at least one of the first and second user equipment, requesting at least one of the respective first and second user equipment power saving mode receive periods to be modified, so that the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period is reduced.

34. A communications system comprising a base station as claimed in claim 17.

32. A user equipment for use in a communications network, wherein the user equipment comprises:

a processor configured to receive a message requesting the user equipment to change the first time period to a further time period and further arranged to change the power saving mode from the first time period to the further time period; and

said user equipment is configured to receive data from and transmit data to at least one relay directly and further configured to receive data from and transmit data to a base station via the relay, wherein the user equipment is further configured to enter a power saving mode to not receive any messages transmitted by the relay for a first time period wherein.

35. A communications system comprising a user equipment as claimed in claim 32.

36. A method for operating a relay, the method comprising:

configuring said relay to receive data from and transmit data to at least one higher level node and receive data from and transmit data to at least one lower level node; and

entering a power saving mode,

wherein the relay is configured for use in a communications network.

37. A method for operating a relay as claimed in claim 36, wherein entering a power saving mode further comprises,

operating the relay so not to be able to receive any messages from the at least one higher level node.

38. A method for operating a relay as claimed in claim 36, wherein entering a power saving mode further comprises:

operating the relay so not to be able to transmit any messages to the at least one higher level node.

39. A method for operating a relay as claimed in claim 36, wherein entering a power saving mode further comprises operating the relay to be able to receive any messages from the at least one lower level node.

40. A method for operating a relay as claimed in claim 36, further comprising:

detecting the at least one lower level node is in a lower level node power saving mode.

41. A method for operating a relay as claimed in claim 40, further comprising:

transmitting a message from the relay to the at least one higher level node requesting the relay to enter a power saving mode.

42. A method for operating a relay as claimed in claim 40, further comprising detecting the lower level node power saving mode receive period.

43. A method for operating a relay as claimed in claim 42, wherein entering the power saving mode further comprises entering the power saving mode when the at least one lower level node is not in the receive period.

44. A method for operating a relay as claimed in claim 36, further comprising receiving a message from the higher level node to enter the power saving mode for a specified period.

45. A method for operating a relay as claimed in claim 36, wherein the processor is configured to communicate to at least two lower level nodes, the method further comprising detecting that all of the at least two lower level nodes are in a lower level node power saving mode.

46. A method for operating a relay as claimed in claim 45, further comprising detecting the lower level node power saving receive periods for all of the lower level nodes.

47. A method for operating a relay as claimed in claim 46, further comprising, entering the power saving mode when at least one of the at least two lower level nodes is not in the receive period.

48. A method for operating a relay as claimed in claim 45, further comprising detecting a period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period.

49. A method for operating a relay as claimed in claim 48, further comprising transmitting a message from the relay to the at least one higher level node requesting a reduction of the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period.

50. A method for operating a relay as claimed in claim 48, further comprising transmitting a message from the relay to the at least one higher level node requesting at least one of the first and second lower level node power saving mode receive periods is modified, so that the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period is reduced.

51. A method for operating a relay as claimed in claim 48, further comprising transmitting a message from the relay to at least one of the first and second lower level nodes requesting at least one of the respective first and second lower level node power saving mode receive periods is modified, so that the period between a first lower level node power saving mode receive period and a second lower level node power saving mode receive period is reduced.

52. A method for operating a base station for use in a communications network, the method comprising:

configuring the base station for use in a communications network and further configuring the base station to receive data from and transmit data to at least one relay directly and further configured to receive data from and transmit data to at least one user equipment via the relay; and

transmitting a message from the base station to the relay requesting the relay to enter a power saving mode.

53. A method for operating a base station as claimed in claim 52, wherein the relay is further configured in the power saving mode, to not receive any messages from the base station.

54. A method for operating a base station as claimed in claim 52, wherein the relay is further configured in the power saving mode to not transmit any messages to the base station.

55. A method for operating a base station as claimed in claim 52, wherein the relay is further configured in the power saving mode to receive any messages from the user equipment.

56. A method for operating a base station as claimed in claim 52, further comprising detecting the at least one user equipment is in a lower level node power saving mode.

57. A method for operating a base station as claimed in claim 52, further comprising receiving a message from the relay requesting the relay to enter a power saving mode.

58. A method for operating a base station as claimed in claim 56, further comprising detecting the at least one user equipment power saving mode receive period.

59. A method for operating a base station as claimed in claim 58, further comprising transmitting a message from the base station to the relay, requesting the relay to enter the power saving mode when the at least one user equipment is not in the receive period.

60. A method for operating a base station as claimed in claim 52, wherein the base station is configured to communicate to at least two user equipment via the relay, and further comprising detecting that all of the at least two user equipment are in a user equipment power saving mode.

61. A method for operating a base station as claimed in claim 60, further comprising detecting the user equipment power saving receive periods for all of the user equipment.

62. A method for operating a base station as claimed in claim 61, further comprising transmitting a message from the base station to the relay to request the relay to enter the power saving mode when at least one of the at least two lower level nodes is not in the receive period.

63. A method for operating a base station as claimed in claim 60, further comprising detecting a period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period.

64. A method for operating a base station as claimed in claim 63, further comprising modifying the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period.

65. A method for operating a base station as claimed in claim 63, further comprising receiving a message from the relay requesting at least one of the first and second user equipment power saving mode receive periods is modified, so that the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period is reduced.

66. A method for operating a base station as claimed in claim 63, further comprising transmitting a message from the base station to at least one of the first and second user equipment requesting at least one of the respective first and second user equipment power saving mode receive periods is modified, so that the period between a first user equipment power saving mode receive period and a second user equipment power saving mode receive period is reduced.

67. A method for operating a user equipment, the method comprising:

configuring the user equipment to receive data from and transmit data to at least one relay directly and further configured to receive data from and transmit data to a base station via the relay;

receiving a message requesting the user equipment to change the first time period to a further time period; and

changing the power saving mode for the user equipment from the first time period to the further time period,

wherein the user equipment is configured for use in a communications network and the user equipment is further configured to enter a power saving mode, to not receive any messages transmitted by the relay for a first time period.

68. A computer program embodied on a computer readable medium, the computer program comprising computer code to operate a computer to perform a method for operating a relay, said relay configured to receive data from and transmit data to at least one higher level node and receive data from and transmit data to at least one lower level node, wherein the method comprises entering a power saving mode.

69. A computer program embodied on a computer readable medium, the computer program comprising computer code to operate a computer to perform a method for operating a base station for use in a communications network, said base station arranged to receive data from and transmit data to at least one relay directly and further arranged to receive data from and transmit data to at least one user equipment via the relay, wherein the method comprises transmitting a message from the base station to the relay requesting the relay to enter a power saving mode.

70. A computer program embodied on a computer readable medium, the computer program comprising computer code to operate a computer to perform a method for operating a user equipment for use in a communications network, said user equipment configured to receive data from and transmit data to at least one relay directly and further configured to receive data from and transmit data to a base station via the relay, wherein the user equipment is further configured to enter a power saving mode to not receive any messages transmitted by the relay for a first time period wherein the method comprises:

receiving a message requesting the user equipment to change the first time period to a further time period; and

changing the power saving mode for the user equipment from the first time period to the further time period.