Apparatus and method for controlling uplink power control in communication system

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.

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 O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nommal     —     PUCCH     —     Dyn  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 O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn  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 O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nominal     —     PUCCH     —     Dyn  and the P O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn .   
     
     
         5 . The method of  claim 4 , wherein the P O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nominal     —     PUCCH     —     Dyn  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 O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn  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 O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nominal     —     PUCCH     —     Dyn  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 O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nominal     —     PUCCH     —     Dyn .   
     
     
         8 . The method of  claim 7 , wherein the P O     —     Nominal     —     PUSCH     —     Dyn /P O     —     Nominal     —     PUCCH     —     Dyn  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 O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn  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 O     —     NOMINAL     —     PUSCH,c (j)/P O     —     NOMINAL     —     PUCCH,c (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 O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn .   
     
     
         11 . The method of  claim 10 , wherein the P O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn  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 O     —     NOMINAL     —     PUSCH,c (j)/P O     —     NOMINAL     —     PUCCH  is obtained by:
     P   O     —     UE     —     PUSCH     —     Dyn   /P   O     —     UE     —     PUCCH     —     Dyn =the power control open-loop basic working point of PUSCH/PUCCH in the conflict sub-frame− P   O     —     NOMINAL     —     PUSCH,c ( j )/ P   O     —     NOMINAL     —     PUCCH .
   
     
     
         12 . The method of  claim 10 , wherein the P O     —     UE     —     PUSCH     —     Dyn /P O     —     UE     —     PUCCH     —     Dyn  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.