COMPRESSED MODE OPERATION AND POWER CONTROL WITH DISCONTINUOUS TRANSMISSION AND/OR RECEPTION

• US 20080102880A1
• Filed: 10/25/2007
• Published: 05/01/2008
• Est. Priority Date: 10/26/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gholmieh, Aziz, Tenny, Nathan Edward, Montojo, Juan, Grilli, Francesco, Chaponniere, Etienne F.
• Granted Patent: US 8,094,554 B2
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/228 using past power values or information
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/287 when the channel is in stand-by
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Techniques to support operation in a compressed mode and/or a continuous packet connectivity (CPC) mode are described. In an aspect, a user equipment (UE) may obtain an assignment of enabled subframes for the CPC mode and an assignment of transmission gaps for the compressed mode. The transmission gaps may be aligned with idle times between the enabled subframes. The UE may exchange data during enabled subframes not overlapping the transmission gaps and may skip data exchanges during enabled subframes overlapping the transmission gaps. The UE may make cell measurements during the transmission gaps. In another aspect, the UE may obtain enabled subframes and skipped subframes, exchange data during enabled subframes not corresponding to the skipped subframes, and skip data exchanges during the skipped subframes. In yet another aspect, the UE may receive orders on a shared control channel to quickly enable and disable the compressed mode.

Claims

1. An apparatus for wireless communication, comprising:

at least one processor to obtain an assignment of enabled subframes for a first mode for a user equipment (UE), and to obtain an assignment of transmission gaps for a second mode for the UE, the transmission gaps being aligned with idle times between the enabled subframes; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the at least one processor exchanges data during enabled subframes not overlapping the transmission gaps, and skips data exchanges during enabled subframes overlapping the transmission gaps.

3. The apparatus of claim 1, wherein the at least one processor makes cell measurements during the transmission gaps.

4. The apparatus of claim 1, wherein each transmission gap starts in an idle time between consecutive enabled subframes.

5. The apparatus of claim 1, wherein the at least one processor obtains an assignment of at least one first pattern for the enabled subframes, and obtains an assignment of at least one second pattern for the transmission gaps, each second pattern being multiple times the duration of each first pattern.

6. The apparatus of claim 1, wherein the first mode is a continuous packet connectivity (CPC) mode and the second mode is a compressed mode in Universal Mobile Telecommunication System (UMTS).

7. A method for wireless communication, comprising:

obtaining an assignment of enabled subframes for a first mode for a user equipment (UE); and

obtaining an assignment of transmission gaps for a second mode for the UE, the transmission gaps being aligned with idle times between the enabled subframes.

8. The method of claim 7, further comprising:

exchanging data during enabled subframes not overlapping the transmission gaps; and

skipping data exchanges during enabled subframes overlapping the transmission gaps.

9. The method of claim 7, further comprising:

making cell measurements during the transmission gaps.

10. An apparatus for wireless communication, comprising:

means for obtaining an assignment of enabled subframes for a first mode for a user equipment (UE); and

means for obtaining an assignment of transmission gaps for a second mode for the UE, the transmission gaps being aligned with idle times between the enabled subframes.

11. The apparatus of claim 10, further comprising:

means for exchanging data during enabled subframes not overlapping the transmission gaps; and

means for skipping data exchanges during enabled subframes overlapping the transmission gaps.

12. The apparatus of claim 10, further comprising:

means for making cell measurements during the transmission gaps.

13. A computer program product, comprising:

computer-readable medium comprising;

code for causing a computer to obtaining an assignment of enabled subframes for a first mode for a user equipment (UE); and

code for causing the computer to obtaining an assignment of transmission gaps for a second mode for the UE, the transmission gaps being aligned with idle times between the enabled subframes.

14. An apparatus for wireless communication, comprising:

at least one processor to determine an assignment of enabled subframes for a first mode for a user equipment (UE), to determine an assignment of transmission gaps for a second mode for the UE, the transmission gaps being aligned with idle times between the enabled subframes, and to send the assignment of the enabled subframes and the assignment of the transmission gaps to the UE; and

a memory coupled to the at least one processor.

15. The apparatus of claim 14, wherein the at least one processor determines a first set of at least one parameter for the transmission gaps based on a second set of at least one parameter for the enabled subframes.

16. An apparatus for wireless communication, comprising:

at least one processor to determine enabled subframes for a user equipment (UE), to determine skipped subframes for the UE, to exchange data during enabled subframes not corresponding to the skipped subframes, and to skip data exchanges during the skipped subframes; and

a memory coupled to the at least one processor.

17. The apparatus of claim 16, wherein the at least one processor determines the enabled subframes based on at least one first pattern, and determines the skipped subframes based on a second pattern.

18. The apparatus of claim 16, wherein the at least one processor makes cell measurements during extended idle times between enabled subframes and covering skipped subframes.

19. A method for wireless communication, comprising:

determining enabled subframes for a user equipment (UE);

determining skipped subframes for the UE;

exchanging data during enabled subframes not corresponding to the skipped subframes; and

skipping data exchanges during the skipped subframes.

20. The method of claim 19, further comprising:

making cell measurements during extended idle times between enabled subframes and covering skipped subframes.

21. An apparatus for wireless communication, comprising:

at least one processor to obtain a configuration for a compressed mode for a user equipment (UE), to receive orders on a shared control channel to enable and disable the compressed mode, and to operate based on the configuration for the compressed mode when enabled by an order received on the shared control channel; and

a memory coupled to the at least one processor.

22. The apparatus of claim 21, wherein the configuration for the compressed mode indicates transmission gaps, and wherein the at least one processor skips data exchanges during the transmission gaps when the compressed mode is enabled.

23. The apparatus of claim 21, wherein the at least one processor receives an order to disable the compressed mode, receives a data transmission burst after receiving the order to disable the compressed mode, and receives an order to enable the compressed mode after receiving the data transmission burst.

24. A method for wireless communication, comprising:

obtaining a configuration for a compressed mode for a user equipment (UE);

receiving orders on a shared control channel to enable and disable the compressed mode; and

operating based on the configuration for the compressed mode when enabled by an order received on the shared control channel.

25. The method of claim 24, wherein the configuration for the compressed mode indicates transmission gaps, and wherein the operating based on the configuration for the compressed mode comprises skipping data exchanges during the transmission gaps when the compressed mode is enabled.

26. The method of claim 24, wherein the receiving orders on the shared control channel and the operating based on the configuration for the compressed mode comprise

receiving an order to disable the compressed mode,

receiving a data transmission burst after receiving the order to disable the compressed mode, and

receiving an order to enable the compressed mode after receiving the data transmission burst.

27. An apparatus for wireless communication, comprising:

at least one processor to determine transmit power used for a first transmission sent in a first time interval, and to determine transmit power for a second transmission in a second time interval based on the transmit power used for the first transmission and a power adjustment, the second time interval being separated from the first time interval by an idle period; and

a memory coupled to the at least one processor.

28. The apparatus of claim 27, wherein the at least one processor obtains a first open loop estimate for the first transmission, obtains a second open loop estimate for the second transmission, and determines the power adjustment based on the first and second open loop estimates.

29. The apparatus of claim 28, wherein the at least one processor obtains the first open loop estimate based on received pilot power at end of the first time interval, and obtains the second open loop estimate based on received pilot power at start of the second time interval.

30. The apparatus of claim 27, wherein the power adjustment is a predetermined positive value.

31. The apparatus of claim 27, wherein the power adjustment is an increasing value during an initial part of the second transmission.

32. The apparatus of claim 27, wherein the idle period corresponds to a transmission gap in a compressed mode.

33. The apparatus of claim 27, wherein the first and second time intervals correspond to first and second enabled subframes in a continuous packet connectivity (CPC) mode, and wherein the idle period corresponds to an idle time between the first and second enabled subframes.

34. A method for wireless communication, comprising:

determining transmit power used for a first transmission sent in a first time interval; and

determining transmit power for a second transmission in a second time interval based on the transmit power used for the first transmission and a power adjustment, the second time interval being separated from the first time interval by an idle period.

35. The method of claim 34, further comprising:

obtaining a first open loop estimate for the first transmission;

obtaining a second open loop estimate for the second transmission; and

determining the power adjustment based on the first and second open loop estimates.

36. The method of claim 34, wherein the power adjustment is a predetermined positive value.

37. The method of claim 34, wherein the power adjustment is an increasing value during an initial part of the second transmission.