Transmitting with an uplink transmission power based on a pathloss reference identified by a pathloss index
An apparatus for wireless communication receives at least one radio resource control message including configuration parameters of a cell. The configuration parameters include: a cell index identifying the cell; and an index identifying downlink subcarriers as a pathloss reference signal of the cell. The downlink subcarriers identified by the index are measured to determine the pathloss for uplink transmission of the at least one uplink signal. The at least one uplink signal is transmitted transmit, via uplink subcarriers and employing the uplink transmission power.
1. An apparatus for wireless communication, comprising:
at least one processor configured to determine an uplink transmission power for at least one uplink signal based on a pathloss; and
a transceiver coupled to the at least one processor, the transceiver being configured to:
receive at least one radio resource control message comprising configuration parameters of a cell, the configuration parameters comprising:
a cell index identifying the cell; and
an index identifying downlink subcarriers as a pathloss reference signal of the cell;
measure the downlink subcarriers identified by the index to determine the pathloss for uplink transmission of the at least one uplink signal; and
transmit, via uplink subcarriers, the at least one uplink signal employing the uplink transmission power.
2. The apparatus of claim 1 , wherein the cell index is a first cell index, and wherein the index indicates a second cell index of a first secondary cell different from the cell.
3. The apparatus of claim 1 , wherein the configuration parameters indicate cells, comprising the cell, are grouped into cell groups comprising:
a first cell group comprising a primary cell; and
a second cell group comprising the cell.
4. The apparatus of claim 1 , wherein:
the cell is a first secondary cell; and
the index indicates an index of a second secondary cell different from the first secondary cell.
5. The apparatus of claim 1 , wherein the cell comprises the downlink subcarriers.
6. The apparatus of claim 1 , wherein the cell is identified by a physical cell identifier different from the cell index.
7. The apparatus of claim 1 , wherein the configuration parameters indicate cells, comprising the cell, are grouped into timing advance groups comprising:
a primary timing advance group comprising a primary cell; and
a secondary timing advance group comprising the cell.
8. The apparatus of claim 1 , wherein the downlink subcarriers are contiguous downlink subcarriers.
9. The apparatus of claim 1 , wherein the index is a radio resource control (RRC) dedicated configuration parameter.
10. The apparatus of claim 1 , wherein the downlink subcarriers and the uplink subcarriers are in a same frequency band.
11. An apparatus for wireless communications, comprising:
means for receiving at least one radio resource control message comprising configuration parameters of a cell, the configuration parameters comprising:
a cell index identifying the cell; and
an index identifying downlink subcarriers as a pathloss reference signal of the cell;
means for receiving the at least one radio resource control message;
means for measuring the downlink subcarriers identified by the index to determine a pathloss for uplink transmission of at least one uplink signal;
means for determining an uplink transmission power for the at least one uplink signal based on the pathloss; and
means for transmitting, via uplink subcarriers, the at least one uplink signal employing the uplink transmission power.
12. The apparatus of claim 11 , wherein the cell index is a first cell index, and wherein the index indicates a second cell index of a first secondary cell different from the cell.
13. The apparatus of claim 11 , wherein the configuration parameters indicate cells, comprising the cell, are grouped into cell groups comprising:
a first cell group comprising a primary cell; and
a second cell group comprising the cell.
14. The apparatus of claim 11 , wherein:
the cell is a first secondary cell; and
the index indicates an index of a second secondary cell different from the first secondary cell.
15. The apparatus of claim 11 , wherein the cell comprises the downlink subcarriers.
16. The apparatus of claim 11 , wherein the cell is identified by a physical cell identifier different from the cell index.
17. The apparatus of claim 11 , wherein the configuration parameters indicate cells, comprising the cell, are grouped into timing advance groups comprising:
a primary timing advance group comprising a primary cell; and
a secondary timing advance group comprising the cell.
18. The apparatus of claim 11 , wherein the downlink subcarriers are contiguous downlink subcarriers.
19. The apparatus of claim 11 , wherein the index is a radio resource control (RRC) dedicated configuration parameter.
20. A non-transitory computer readable medium of a wireless device having instructions stored thereon, the instructions executable by one or more processors for:
receiving at least one radio resource control message comprising configuration parameters of a cell, the configuration parameters comprising:
a cell index identifying the cell; and
an index identifying downlink subcarriers as a pathloss reference signal of the cell;
measuring the downlink subcarriers identified by the index to determine a pathloss for uplink transmission of at least one uplink signal;
determining an uplink transmission power for the at least one uplink signal based on the pathloss; and
transmitting, via uplink subcarriers, the at least one uplink signal employing the uplink transmission power.