Group power control for a secondary cell

Abstract

Methods, apparatuses, systems, and computer-readable media for power control for a secondary cell are disclosed. Primary and secondary transmit power control (TPC) indexes may indicate positions of first and second TPC commands, respectively, within downlink control information (DCI). Based on one or more of the TPC indexes, TPC commands may be used for sending transport blocks.

We claim: 
     
         1 . A method comprising:
 receiving, by a wireless device, a transmit power control (TPC) index indicating a position, in downlink control information (DCI), of a TPC command for a physical uplink shared channel (PUSCH) of a secondary cell;   receiving an indication associated with activation of resources of the PUSCH of the secondary cell;   receiving first DCI comprising a plurality of TPC commands, wherein the plurality of TPC commands comprise the TPC command at the position, in the first DCI, indicated by the TPC index; and   sending, based on the TPC command and using the resources of the PUSCH of the secondary cell, one or more transport blocks.   
     
     
         2 . The method of  claim 1 , further comprising receiving a message indicating whether the wireless device is expected to monitor a common search space for the first DCI. 
     
     
         3 . The method of  claim 1 , wherein the TPC command comprises two bits based on the first DCI being DCI format 3, and wherein the two bits represent minus one decibel (dB), zero dB, plus one dB, or three dB. 
     
     
         4 . The method of  claim 1 , wherein the TPC command comprises a single bit based on the first DCI being DCI format 3A, and wherein the single bit represents minus one decibel (dB) or plus one dB. 
     
     
         5 . The method of  claim 1 , wherein the resources comprise periodic resources. 
     
     
         6 . The method of  claim 1 , further comprising receiving, by the wireless device, periodic resource allocation configuration parameters configuring a periodic resource allocation for transmission of the one or more transport blocks via the PUSCH of the secondary cell. 
     
     
         7 . The method of  claim 1 , further comprising receiving, by the wireless device, a TPC radio network temporary identifier (RNTI),
 wherein the receiving the first DCI comprises monitoring a common search space for DCI associated with the TPC RNTI.   
     
     
         8 . The method of  claim 1 , wherein the TPC index is a secondary TPC index, and wherein the method further comprises:
 receiving, by the wireless device, a primary TPC index indicating a first position, the DCI, of a first TPC command for a first PUSCH of a primary cell.   
     
     
         9 . A wireless device comprising:
 one or more processors; and   memory storing instructions that, when executed by the one or more processors, configure the wireless device to:
 receive a transmit power control (TPC) index indicating a position, in downlink control information (DCI), of a TPC command for a physical uplink shared channel (PUSCH) of a secondary cell; 
 receive an indication associated with activation of resources of the PUSCH of the secondary cell; 
 receive first DCI comprising a plurality of TPC commands, wherein the plurality of TPC commands comprise the TPC command at the position, in the first DCI, indicated by the TPC index; and 
 send, based on the TPC command and using the resources of the PUSCH of the secondary cell, one or more transport blocks. 
   
     
     
         10 . The wireless device of  claim 9 , wherein the instructions, when executed by the one or more processors, further configure the wireless device to receive a message indicating whether the wireless device is expected to monitor a common search space for the first DCI. 
     
     
         11 . The wireless device of  claim 9 , wherein the TPC command comprises two bits based on the first DCI being DCI format 3, and wherein the two bits represent minus one decibel (dB), zero dB, plus one dB, or three dB. 
     
     
         12 . The wireless device of  claim 9 , wherein the TPC command comprises a single bit based on the first DCI being DCI format 3A, and wherein the single bit represents minus one decibel (dB) or plus one dB. 
     
     
         13 . The wireless device of  claim 9 , wherein the resources comprise periodic resources. 
     
     
         14 . The wireless device of  claim 9 , wherein the instructions, when executed by the one or more processors, further configure the wireless device to receive periodic resource allocation configuration parameters configuring a periodic resource allocation for transmission of the one or more transport blocks via the PUSCH of the secondary cell. 
     
     
         15 . The wireless device of  claim 9 , wherein the instructions, when executed by the one or more processors, further configure the wireless device to receive a TPC radio network temporary identifier (RNTI), and
 wherein the instructions, when executed by the one or more processors, configure the wireless device to receive the first DCI by monitoring a common search space for DCI associated with the TPC RNTI.   
     
     
         16 . The wireless device of  claim 9 , wherein the TPC index is a secondary TPC index, and wherein the instructions, when executed by the one or more processors, further configure the wireless device to:
 receive a primary TPC index indicating a first position, the DCI, of a first TPC command for a first PUSCH of a primary cell.   
     
     
         17 . A non-transitory computer-readable medium storing instructions that, when executed, cause:
 receiving, by a wireless device, a transmit power control (TPC) index indicating a position, in downlink control information (DCI), of a TPC command for a physical uplink shared channel (PUSCH) of a secondary cell;   receiving an indication associated with activation of resources of the PUSCH of the secondary cell;   receiving first DCI comprising a plurality of TPC commands, wherein the plurality of TPC commands comprise the TPC command at the position, in the first DCI, indicated by the TPC index; and   sending, based on the TPC command and using the resources of the PUSCH of the secondary cell, one or more transport blocks.   
     
     
         18 . The non-transitory computer-readable medium of  claim 17 , wherein the instructions, when executed, further cause receiving a message indicating whether the wireless device is expected to monitor a common search space for the first DCI. 
     
     
         19 . The non-transitory computer-readable medium of  claim 17 , wherein the TPC command comprises two bits based on the first DCI being DCI format 3, and wherein the two bits represent minus one decibel (dB), zero dB, plus one dB, or three dB. 
     
     
         20 . The non-transitory computer-readable medium of  claim 17 , wherein the TPC command comprises a single bit based on the first DCI being DCI format 3A, and wherein the single bit represents minus one decibel (dB) or plus one dB. 
     
     
         21 . The non-transitory computer-readable medium of  claim 17 , wherein the resources comprise periodic resources. 
     
     
         22 . The non-transitory computer-readable medium of  claim 17 , wherein the instructions, when executed, further cause receiving, by the wireless device, periodic resource allocation configuration parameters configuring a periodic resource allocation for transmission of the one or more transport blocks via the PUSCH of the secondary cell. 
     
     
         23 . The non-transitory computer-readable medium of  claim 17 , wherein the instructions, when executed, further cause receiving, by the wireless device, a TPC radio network temporary identifier (RNTI), and
 wherein the instructions, when executed, cause the receiving the first DCI by monitoring a common search space for DCI associated with the TPC RNTI.   
     
     
         24 . The non-transitory computer-readable medium of  claim 17 , wherein the TPC index is a secondary TPC index, and wherein the instructions, when executed, further cause:
 receiving, by the wireless device, a primary TPC index indicating a first position, the DCI, of a first TPC command for a first PUSCH of a primary cell.