APPARATUS AND METHOD FOR CONTROLLING UPLINK POWER CONTROL IN COMMUNICATION SYSTEM

• US 20170215149A1
• Filed: 01/06/2017
• Published: 07/27/2017
• Est. Priority Date: 04/20/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Zhang, Shichang, Sun, Chengjun, Li, Yingyang
• Granted Patent: US 10,912,037 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/223 predicting future states of the transmission
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

The present invention provides an apparatus and method for uplink signal power control in a dynamic Time Division Duplexing (TDD) cell. According to the method, after accessing a dynamic TDD cell, a User Equipment (UE) receives from an evolved NodeB (eNB) an uplink power control parameter which has been adjusted for a conflict uplink sub-frame.

Claims

1-13. -13. (canceled)

14. A method for uplink power control by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a base station, first signaling information indicating a subframe configuration for a serving cell, and second signaling information comprising a first parameter set and a second parameter set for uplink power control;

determining a first transmit power for an uplink data channel in a first subframe identified by the first signaling information based on the first parameter set;

determining a second transmit power for an uplink data channel in a second subframe identified by the first signaling information based on the second parameter set;

transmitting uplink data on the uplink data channel in the first subframe using the first transmit power in the first subframe; and

transmitting uplink data on the uplink data channel in the second subframe using the second transmit power in the second subframe.

15. The method of claim 14, wherein each of the first parameter set and the second parameter set comprises a nominal transmit power and a UE-specific transmit power for the serving cell.

16. The method of claim 14, wherein the first signaling information and the second signaling information are received via a radio resource control (RRC) message.

17. The method of claim 14, wherein the first transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the first parameter set, and wherein the second transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the second parameter set.

18. A method for uplink power control by a base station in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), first signaling information indicating a subframe configuration for a serving cell, and second signaling information comprising a first parameter set and a second parameter set for uplink power control;

receiving, from the UE, uplink data on a uplink data channel transmitted using a first transmit power in a first subframe; and

receiving, from the UE, uplink data on a uplink data channel transmitted using a second transmit power in a second subframe,

wherein the first transmit power for the uplink data channel in the first subframe identified by the first signaling information is determined based on the first parameter set, and

wherein the second transmit power for the uplink data channel in the second subframe identified by the second signaling information is determined based on the second parameter set.

19. The method of claim 18, wherein each of the first parameter set and the second parameter set comprises a nominal transmit power and a UE-specific transmit power for the serving cell.

20. The method of claim 18, wherein the first signaling information and the second signaling information are received via a radio resource control (RRC) message.

21. The method of claim 18, wherein the first transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the first parameter set, and wherein the second transmit power is calculated by using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the second parameter set.

22. An apparatus in a user equipment (UE) for uplink power control by a user equipment (UE) in a wireless communication system, the apparatus comprising:

a receiver configured to receive, from a base station, first signaling information indicating a subframe configuration for a serving cell, and second signaling information comprising a first parameter set and a second parameter set for uplink power control;

a processor configured to;

determine a first transmit power for an uplink data channel in a first subframe identified by the first signaling information based on the first parameter set; and

determine a second transmit power for an uplink data channel in a second subframe identified by the second signaling information based on the second parameter set; and

a transmitter configured to;

transmit uplink data on the uplink data channel in the first subframe using the first transmit power; and

transmit uplink data on the uplink data channel in the second subframe using the second transmit power.

23. The apparatus of claim 22, wherein each of the first parameter set and the second parameter set comprises a nominal transmit power and a UE-specific transmit power for the serving cell.

24. The apparatus of claim 22, wherein the first signaling information and the second signaling information are received via a radio resource control (RRC) message.

25. The apparatus of claim 22, wherein the first transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the first parameter set, and wherein the second transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the second parameter set.

26. An apparatus in a base station for uplink power control in a wireless communication system, the apparatus comprising:

a transmitter configured to transmit, to a user equipment (UE), first signaling information indicating a subframe configuration for a serving cell, and second signaling information comprising a first parameter set and a second parameter set for uplink power control; and

a receiver configured to receive, from the UE, uplink data on a uplink data channel transmitted using a first transmit power in a first subframe, and receive, from the UE, uplink data on a uplink data channel transmitted using a second transmit power in a second subframe,

wherein the first transmit power for the uplink data channel in the first subframe identified by the first signaling information is determined based on the first parameter set, and

wherein the second transmit power for the uplink data channel in the second subframe identified by the second signaling information is determined based on the second parameter set.

27. The apparatus of claim 26, wherein each of the first parameter set and the second parameter set comprises a nominal transmit power and a UE-specific transmit power for the serving cell.

28. The apparatus of claim 26, wherein the first signaling information and the second signaling information are received via a radio resource control (RRC) message.

29. The apparatus of claim 26, wherein the first transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the first parameter set, and the second transmit power is calculated using a sum of a nominal transmit power and a UE-specific transmit power for the serving cell in the second parameter set.