Method and apparatus for controlling uplink power in wireless communication system

Patent metadata

Field	Value
Publication number	US-2016205632-A1
Application number	US-201414913210-A
Country	US
Kind code	A1
Filing date	Sep 4, 2014
Priority date	Sep 4, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A method and apparatus for controlling an uplink power in a wireless communication system is provided. A user equipment (UE) allocates a first minimum reserved power for a first carrier group and a second minimum reserved power for a second carrier group, and after allocating the first minimum reserved power and the second minimum power, applies a power sharing rule for remaining power, except the first minimum reserved power and the second minimum reserved power, between the first carrier group and the second carrier group.

First claim

1 - 14 . (canceled)

15 . A method for controlling, by a user equipment (UE), an uplink power for dual connectivity in a wireless communication system, the method comprising:
configuring, by the UE, a first guaranteed power for a first carrier group (CG) and a second guaranteed power for a second CG; and allocating, by the UE, a power for the first CG based on the second guaranteed power and a channel priority.

16 . The method of claim 15 , wherein the first guaranteed power and the second guaranteed power are configured by a master eNodeB (MeNB) in dual connectivity.

17 . The method of claim 15 , wherein the first guaranteed power and the second guaranteed power are configured by a ratio.

18 . The method of claim 15 , wherein the first guaranteed power and the second guaranteed power are indicated by a higher layer parameter.

19 . The method of claim 15 , wherein the first guaranteed power and the second guaranteed power do not limit power of physical random access channel (PRACH) transmission of the UE.

20 . The method of claim 15 , wherein a PRACH has a highest priority in the channel priority.

21 . The method of claim 15 , wherein a physical uplink control channel (PUCCH) has a higher priority than a physical uplink shared channel (PUSCH) in the channel priority.

22 . The method of claim 15 , wherein a PUSCH with uplink control information (UCI) including at least one of a hybrid automatic repeat request (HARQ)-acknowledgement (ACK) or a scheduling request (SR) has a higher priority than a PUSCH with UCI not including at least one of the HARQ-ACK or the SR in the channel priority.

23 . The method of claim 15 , wherein a PUSCH with UCI has a higher priority than a PUSCH without the UCI in the channel priority.

24 . The method of claim 15 , wherein the power for the first CG is allocated within a remaining power, which is remained by subtracting the second guaranteed power from a configured maximum power for the UE.

25 . The method of claim 15 , further comprising:
performing power scaling within the first CG and the second CG.

26 . The method of claim 15 , wherein the first CG is a master cell group (MCG) which corresponds to an MeNB in dual connectivity, and
wherein the second CG is a secondary cell group (SCG) which corresponds to a secondary eNB (SeNB) in dual connectivity.

27 . The method of claim 15 , wherein the first CG is a SCG which corresponds to a SeNB in dual connectivity, and
wherein the second CG is a MCG which corresponds to a MeNB in dual connectivity.

28 . The method of claim 15 , wherein the first CG includes a plurality of component carriers (CCs), and
wherein the second CG includes a plurality of CCs.

29 . A user equipment (UE) comprising:
a memory; a radio frequency (RF) unit; and a processor coupled to the memory and the RF unit, and configured to: configure a first guaranteed power for a first carrier group (CG) and a second guaranteed power for a second CG, allocate a power for the first CG based on the second guaranteed power and a channel priority.

Assignees

• Lg Electronics Inc

Inventors

• Yi Yunjung
• Ahn Joonkui
• Kim Kijun
• Seo Dongyoun
• Yang Suckchel

Classifications

• H04W72/56

  based on priority criteria · CPC title

• H04W52/34

  TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading · CPC title

• H04W52/146 Primary

  Uplink power control · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04W52/367 Primary

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title