APPARATUS AND METHOD FOR CONTROLLING UPLINK POWER CONTROL IN COMMUNICATION SYSTEM

• US 20150085716A1
• Filed: 04/16/2013
• Published: 03/26/2015
• Est. Priority Date: 04/20/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Zhang, Shichang, Li, Yingyang, Sun, Changjun
• Application Number:
  US14/395,804
• Publication Number:
  US 20150085716A1
• Time in Patent Office: Days
• US Class Current: 370/280
• 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. A method for uplink power control in a dynamic Time Division Duplexing (TDD) cell, comprising:

receiving, by a User Equipment (UE) accessing a dynamic TDD cell, a difference Δ

_PUSCH/Δ

_PUCCH between a power control open-loop basic working point of PUSCH/PUCCH in a conflict uplink sub-frame and a power control open-loop basic working point of PUSCH/PUCCH in a non-conflict uplink sub-frame from an evolved NodeB (eNB), wherein the power control open-loop basic working point of Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) in the conflict uplink sub-frame is obtained by performing calculations using uplink Interference over Thermal (IoT), thermal noise power and uplink target Signal to Interference and Noise Ratio (SINR) of the conflict uplink sub-frame; and

adding, by the UE, the difference Δ

_PUSCH/Δ

_PUCCH to the power control open-loop basic working point for the PUSCH/PUCCH in calculating an uplink transmitting power for the PUSCH/PUCCH in the conflict uplink sub-frame.

2. The method of claim 1, wherein the difference Δ

_PUSCH/Δ

_PUCCH is received by the UE via a Radio Resource Control (RRC) layer message, a system broadcasting message or a physical layer message.

3. The method of claim 2, wherein the RRC layer message, the system broadcasting message or the physical layer message is a conventional message or a customized message.

4. A method for uplink power control in a dynamic Time Division Duplexing (TDD) cell, comprising:

receiving, from an evolved NodeB (eNB) by a User Equipment (UE) accessing a dynamic TDD cell, a cell-specific open-loop basic working point parameter P<sub>O—

Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nommal—

PUCCH—

Dyn</sub> of Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) in a conflict uplink sub-frame and a UE-specific open-loop basic working point parameter P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub> of the PUSCH/PUCCH in the conflict uplink sub-frame which are obtained by using a power control open-loop basic working point of PUSCH/PUCCH in the conflict uplink sub-frame;

wherein the power control open-loop basic working point of PUSCH/PUCCH in the conflict uplink sub-frame is obtained by performing calculations using uplink Interference over Thermal (IoT), thermal noise power and uplink target Signal to Interference and Noise Ratio (SINR) of the conflict uplink sub-frame;

calculating, by the UE, uplink transmitting power of the PUSCH/PUCCH in the conflict uplink sub-frame by using the received P<sub>O—

Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nominal—

PUCCH—

Dyn</sub> and the P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub>.

5. The method of claim 4, wherein the P_O—

<sub>Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nominal—

PUCCH—

Dyn</sub> is received by the UE via a Radio Resource Control (RRC) layer message, a system broadcasting message or a physical layer message;

or

the P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub> is received by the UE via an RRC layer message or a physical layer message.

6. The method of claim 5, wherein the RRC layer message, the system broadcasting message or the physical layer message is a conventional message or a customized message.

7. A method for uplink power control in a dynamic Time Division Duplexing (TDD) cell, comprising:

receiving, from an evolved NodeB (eNB) by a User Equipment (UE) accessing a dynamic TDD cell, a cell-specific open-loop basic working point parameter P<sub>O—

Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nominal—

PUCCH—

Dyn</sub> of Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) in a conflict uplink sub-frame which is obtained by using a power control open-loop basic working point for PUSCH/PUCCH in the conflict uplink sub-frameR a wherein the power control open-loop basic working point for the PUSCH/PUCCH in the conflict uplink sub-frame is obtained by performing calculations using uplink Interference over Thermal (IoT), thermal noise power and uplink target Signal to Interference and Noise Ratio (SINR) of the conflict uplink sub-frame; and

calculating, by the UE, uplink transmitting power of the PUSCH/PUCCH in the conflict uplink sub-frame by using the received P<sub>O—

Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nominal—

PUCCH—

Dyn</sub>.

8. The method of claim 7, wherein the P_O—

<sub>Nominal—

PUSCH—

Dyn</sub>/P<sub>O—

Nominal—

PUCCH—

Dyn</sub> is received by the UE via a Radio Resource Control (RRC) layer message, a system broadcasting message or a physical layer message.

9. The method of claim 8, wherein the RRC layer message, the system broadcasting message or the physical layer message is a conventional message or a customized message.

10. A method for uplink power control in a dynamic Time Division Duplexing (TDD) cell, comprising:

receiving, from an evolved NodeB (eNB) by a User Equipment (UE) accessing a dynamic TDD cell, a UE-specific open-loop basic working point parameter P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub> of PUSCH/PUCCH in a conflict uplink sub-frame which is obtained by performing calculations using a power control open-loop basic working point of PUSCH/PUCCH in the conflict uplink sub-frame and a cell-specific open-loop basic working point parameter P<sub>O—

NOMINAL—

PUSCH,c</sub>(j)/P<sub>O—

NOMINAL—

PUCCH,c</sub>(j) of the PUSCH/PUCCH in a non-conflict uplink sub-frame, wherein the power control open-loop basic working point for the PUSCH/PUCCH in the conflict uplink sub-frame is obtained by performing calculations using uplink Interference over Thermal (IoT), thermal noise power and uplink target Signal to Interference and Noise Ratio (SINR) of the conflict uplink sub-frame;

calculating, by the UE, uplink transmitting power of the PUSCH/PUCCH in the conflict uplink sub-frame by using the received P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub>.

11. The method of claim 10, wherein the P_O—

<sub>UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub> obtained by performing calculations using a power control open-loop basic working point for PUSCH/PUCCH in a conflict uplink sub-frame and the P<sub>O—

NOMINAL—

PUSCH,c</sub>(j)/P<sub>O—

NOMINAL—

PUCCH</sub> is obtained by;

P<sub>O—

UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub>=the power control open-loop basic working point of PUSCH/PUCCH in the conflict sub-frame−

P<sub>O—

NOMINAL—

PUSCH,c</sub>(j)/P<sub>O—

NOMINAL—

PUCCH</sub>.

12. The method of claim 10, wherein the P_O—

<sub>UE—

PUSCH—

Dyn</sub>/P<sub>O—

UE—

PUCCH—

Dyn</sub> is received by the UE via a Radio Resource Control (RRC) layer message or a physical layer message.

13. The method of claim 12, wherein the RRC layer message, the system broadcasting message or the physical layer message is a conventional message or a customized message.