Granted Patent B2

US 10,342,006 · App. 15/898,328 · Granted Jul 2, 2019

Inventor: Esmael Hejazi Dinan (Herndon, VA)

Assignee: Comcast Cable Communications, LLC

H04W72/042H04H20/33H04L5/0048H04W16/06H04W16/32H04W52/143H04W52/346H04W52/60H04W72/0413H04W72/0446H04W72/1226H04L5/0007H04W48/12H04W52/244H04W88/02H04W88/08

Abstract

Claims (132)

1. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a plurality of radio frames;

transmit, to a wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe.

2. The base station of claim 1 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

3. The base station of claim 1 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

4. The base station of claim 1 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

5. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a plurality of radio frames;

transmit, to a wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe.

6. The base station of claim 5 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

7. The base station of claim 5 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

8. The base station of claim 5 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

9. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of second, fourth, and eighth subframes of each radio frame in a plurality of radio frames;

transmit, to a wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe.

10. The base station of claim 9 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

11. The base station of claim 9 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

12. The base station of claim 9 , wherein the wireless device periodically reports channel state information for:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

13. The base station of claim 9 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

transmit, in response to a decrease in traffic load by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a second plurality of radio frames.

14. The base station of claim 9 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

transmit, in response to an increase in traffic load by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a second plurality of radio frames.

15. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of third, seventh, and ninth subframes of each radio frame in a plurality of radio frames;

transmit, to a wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe.

16. The base station of claim 15 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

17. The base station of claim 15 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

18. The base station of claim 15 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

19. The base station of claim 15 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

transmit, in response to a decrease in traffic load of the base station by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a second plurality of radio frames.

20. The base station of claim 15 , wherein the instructions, when executed by the one or more processors, further cause the base station to:

transmit, in response to an increase in traffic load of the base station by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a second plurality of radio frames.

21. A system comprising:

a base station and a wireless device,

wherein the base station is configured to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a plurality of radio frames;

transmit, to the wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe; and

wherein the wireless device is configured to:

receive the second message; and

report, to the base station, channel state information based on the second message.

22. The system of claim 21 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

23. The system of claim 21 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

24. The system of claim 21 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

25. A system comprising:

a base station and a wireless device,

wherein the base station is configured to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a plurality of radio frames;

transmit, to the wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe; and

wherein the wireless device is configured to:

receive the second message; and

report, to the base station, channel state information based on the second message.

26. The system of claim 25 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

27. The system of claim 25 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

28. The system of claim 25 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

29. A system comprising:

a base station and a wireless device,

wherein the base station is configured to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of second, fourth, and eighth subframes of each radio frame in a plurality of radio frames;

transmit, to the wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe; and

wherein the wireless device is configured to:

receive the second message; and

report, to the base station, channel state information based on the second message.

30. The system of claim 29 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

31. The system of claim 29 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

32. The system of claim 29 , wherein the wireless device periodically reports channel state information for:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

33. The system of claim 29 , wherein the base station is further configured to:

transmit, in response to a decrease in traffic load by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a second plurality of radio frames.

34. The system of claim 29 , wherein the base station is further configured to:

transmit, in response to an increase in traffic load by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a second plurality of radio frames.

35. A system comprising:

a base station and a wireless device,

wherein the base station is configured to:

transmit a first message comprising a subframe allocation bitmap indicating a plurality of Almost Blank Subframes, wherein the plurality of Almost Blank Subframes consists of third, seventh, and ninth subframes of each radio frame in a plurality of radio frames;

transmit, to the wireless device, a second message comprising:

a first measurement subframe allocation bitmap indicating a first plurality of measurement subframes of a primary carrier, wherein the first plurality of measurement subframes excludes the plurality of Almost Blank Subframes; and

a second measurement subframe allocation bitmap indicating a second plurality of measurement subframes of the primary carrier, wherein the second plurality of measurement subframes excludes the first plurality of measurement subframes; and

transmit a first Almost Blank Subframe, wherein the first Almost Blank Subframe is transmitted at a power level that is lower than during a non-Almost Blank Subframe; and

wherein the wireless device is configured to:

receive the second message; and

report, to the base station, channel state information based on the second message.

36. The system of claim 35 , wherein the first Almost Blank Subframe consists essentially of a common reference signal in a control region.

37. The system of claim 35 , wherein the second message further configures measurement subframes of a plurality of neighboring carriers for the wireless device.

38. The system of claim 35 , wherein the wireless device periodically reports channel state information for one or both of:

subframes indicated in the first measurement subframe allocation bitmap; or

subframes indicated in the second measurement subframe allocation bitmap.

39. The system of claim 35 , wherein the base station is further configured to:

transmit, in response to a decrease in traffic load of the base station by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of second, fourth, seventh, and ninth subframes of each radio frame in a second plurality of radio frames.

40. The system of claim 35 , wherein the base station is further configured to:

transmit, in response to an increase in traffic load of the base station by an amount greater than a first value, a third message comprising a second subframe allocation bitmap indicating a second plurality of Almost Blank Subframes, wherein the second plurality of Almost Blank Subframes consists of third and eighth subframes of each radio frame in a second plurality of radio frames.

Assignments (2)

Continuity (8)