Resource blocks and transmit power for uplink signals in a wireless device
A wireless device receives a downlink control information indicating: a transmit power control (TPC) command; and first resource blocks (RBs) for transmission of one or more transport blocks. A transmission power is determined based on the TPC command. The transmission power used for transmission of: an uplink signal; and the one or more transport blocks. Based on an LBT procedure, the following are transmitted with the transmission power and via subcarriers of the first RBs: the uplink signal until a physical uplink shared channel (PUSCH) starting symbol; and the one or more transport blocks starting at the PUSCH starting symbol.
1. A method comprising:
receiving, by a wireless device, a downlink control information indicating:
a transmit power control (TPC) command; and
first resource blocks (RBs) for transmission of one or more transport blocks;
determining, based on the TPC command, a transmission power used for transmission of:
an uplink signal; and
the one or more transport blocks; and
transmitting, based on a listen-before-talk (LBT) procedure, with the transmission power and via subcarriers of the first RBs:
the uplink signal until a physical uplink shared channel (PUSCH) starting symbol; and
the one or more transport blocks starting at the PUSCH starting symbol.
2. The method of claim 1 , wherein the uplink signal is transmitted at a beginning subframe of an uplink burst during one or more subframes.
3. The method of claim 2 , further comprising receiving, from a base station, an indication configuring a starting time for the uplink signal.
4. The method of claim 3 , wherein the uplink signal has a predetermined format.
5. The method of claim 1 , wherein the uplink signal has a predetermined format.
6. The method of claim 1 , further comprising receiving, from a base station, an indication configuring a starting time for the uplink signal.
7. The method of claim 1 , wherein the downlink control information (DCI) further indicates the PUSCH starting symbol.
8. The method of claim 1 , further comprising receiving one or more messages comprising configuration parameters of an unlicensed cell, wherein the one or more messages comprise one or more uplink power control parameters of the unlicensed cell for transmission of the one or more transport blocks.
9. The method of claim 1 , wherein the determining the transmission power further comprises adjusting a power of the uplink signal and the one or more transport blocks with a same adjusting factor.
10. The method of claim 1 , wherein the uplink signal is transmitted to reserve a channel.
11. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive a downlink control information indicating:
a transmit power control (TPC) command; and
first resource blocks (RBs) for transmission of one or more transport blocks;
determine, based on the TPC command, a transmission power used for transmission of:
an uplink signal; and
the one or more transport blocks; and
transmit, based on a listen-before-talk (LBT) procedure, with the transmission power and via subcarriers of the first RBs:
the uplink signal until a physical uplink shared channel (PUSCH) starting symbol; and
the one or more transport blocks starting at the PUSCH starting symbol.
12. The wireless device of claim 11 , wherein the uplink signal is transmitted at a beginning subframe of an uplink burst during one or more subframes.
13. The wireless device of claim 12 , further comprising receiving, from a base station, an indication configuring a starting time for the uplink signal.
14. The wireless device of claim 13 , wherein the uplink signal has a predetermined format.
15. The wireless device of claim 11 , wherein the uplink signal has a predetermined format.
16. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, from a base station, an indication configuring a starting time for the uplink signal.
17. The wireless device of claim 11 , wherein the downlink control information (DCI) further indicates the PUSCH starting symbol.
18. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive one or more messages comprising configuration parameters of an unlicensed cell, wherein the one or more messages comprise one or more uplink power control parameters of the unlicensed cell for transmission of the one or more transport blocks.
19. The wireless device of claim 11 , wherein the determination the transmission power further comprises adjusting a power of the uplink signal and the one or more transport blocks with a same adjusting factor.
20. The wireless device of claim 11 , wherein the uplink signal is transmitted to reserve a channel.