WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
maximize
Machine translation
1. (WO2015113624) METHOD, APPARATUS AND COMPUTER PROGRAM
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

CLAIMS

1 . A method comprising:

receiving at a user equipment first power information for transmitting to a first base station;

receiving at the user equipment second power information for transmitting to a second base station;

causing said user equipment to transmit to said first base station with a first power less than or equal to a first maximum power dependent on said first power information; and

causing said user equipment to transmit to said second base station with a second power less than or equal to a second maximum power dependent on said second power information, such that said first and second power does not exceed a total power allowed for said user equipment.

2. A method according to claim 1 , comprising receiving an offset parameter which defines the first maximum power with respect to the second maximum power.

3. A method according to claim 1 or claim 2, wherein the first base station is a master base station and the second base station is a secondary base station.

4. A method according to any one of the preceding claims, wherein the first power information includes first channel power information.

5. A method according to claim 4, comprising

causing said user equipment to transmit on a first channel to the first base station with a power less than or equal to a first maximum channel power dependent on said first channel power information.

6. A method according to claim 5, wherein the channel is at least one of a physical uplink shared channel, a physical uplink control channel, a physical random access channel or a channel comprising a sounding reference signal.

7. A method according to any one of the preceding claims, comprising generating a power headroom report for at least one of first or second base station based on the power information received for that respective base station.

8. A method according to any one of the preceding claims, comprising receiving from a base station carrier aggregation power information; and

causing said user equipment to transmit to said base station with a power additionally dependent on said carrier aggregation power information.

9. A method according to any one of the preceding claims, comprising causing the user equipment to configure a minimum power level dependent on said first power information.

10. A method according to any one of the preceding claims, comprising causing the user equipment to transmit only uplink control information to the first base station if the power of a channel that carries both uplink control information and uplink data is scaled below the minimum power level.

1 1. A method according to any one of the preceding claims, wherein a transmission to the first base station has a higher priority than transmission to the second base station comprising:

increasing the said first power to a modified first power;

decreasing the said second power to a modified second power if said first and second power exceeds a total power allowed for said user equipment;

causing the user equipment to transmit to the first base station at the modified first power; and

causing the user equipment to transmit to the second base station at the modified second power, such said modified first and second power does not exceed a total power allowed for said user equipment.

12. A method according to claim 1 1 comprising causing the user equipment to transmit a subframe to the first base station at the modified first power and to transmit to a second base station at least one of subsequent or overlapping subframes at the modified second power.

13. A method according to claim 1 1 or claim 12, comprising causing the user equipment to cease transmission of at least one channel to the second base station if a transmission to the first base station of a higher priority than transmission to the second base station is being transmitted to the first base station at a modified first power.

14. A method according to any one of the preceding claims, comprising, in the absence of transmission to the second base station:

increasing the first power to a modified first power,.

causing said user equipment to transmit to thefirst base station such that the modified first power does not exceed a total power allowed for said user equipment .

15. A method according to any one of the preceding claims, comprising causing the user equipment to transmit to said first base station and to said second base station if said first and second power does not exceed a total power allowed for said user equipment;

causing the user equipment to transmit only to said first base station if said first and second power exceeds a total power allowed for said user equipment; and reserving a subframe for a transmission to said second base station.

16. A method according to claim 15, comprising determining a subframe to be said subframe reserved for a transmission to said second base station at least partially based on at least one of round trip time of synchronous HARQ process; shortest round trip time of asynchronous HARQ; periodic resource allocation.

17. An apparatus, said apparatus comprising at least one processor and at least one memory including computer code for one or more programs, the at least one memory and the computer code configured, with the at least one processor, to cause the apparatus at least to:

receive at a user equipment first power information for transmitting to a first base station;

receive at the user equipment second power information for transmitting to a second base station;

cause said user equipment to transmit to said first base station with a first power less than or equal to a first maximum power dependent on said first power information; and

cause said user equipment to transmit to said second base station with a second power less than or equal to a second maximum power dependent on said second power information, such that said first and second power does not exceed a total power allowed for said user equipment.

18. An apparatus according to claim 17, comprising receiving an offset parameter which defines the first maximum power with respect to the second maximum power.

19. An apparatus according to claim 17 or claim 18, wherein the first base station is a master base station and the second base station is a secondary base station.

20. An apparatus according to any one of claims 17 to 19, wherein the first power information includes first channel power information.

21. An apparatus according to claim 20, comprising

causing said user equipment to transmit on a first channel to the first base station with a power less than or equal to a first maximum channel power dependent on said first channel power information.

22. An apparatus according to claim 21 , wherein the channel is at least one of a physical uplink shared channel, a physical uplink control channel, a physical random access channel or a channel comprising a sounding reference signal.

23. An apparatus according to any one of claims 17 to 22, comprising generating a power headroom report for at least one of first or second base station based on the power information received for that respective base station.

24. An apparatus according to any one of claim 17 to 23, comprising receiving from a base station carrier aggregation power information; and

causing said user equipment to transmit to said base station with a power additionally dependent on said carrier aggregation power information.

25. A computer program comprising computer executable instructions which when run are configured to perform the method of any one of claims 1 to 16.