Power value for uplink transmission when adding base station distributed unit
A first base station distributed unit (BS-DU) receives, from a base station central unit (BS-CU), a first power value for uplink transmission of a wireless device to the first BS-DU. The first BS-DU receives, from the BS-CU, a third power value for uplink transmission of the wireless device to the first BS-DU, wherein the third power value is based on a second power value for uplink transmission of the wireless device to a second BS-DU. The first BS-DU transmits, to the BS-CU, a response confirming addition of the second BS-DU for the wireless device.
1. A method comprising:
receiving, by a first base station distributed unit (BS-DU) from a base station central unit (BS-CU), a first power value for uplink transmission of a wireless device to the first BS-DU;
receiving, from the BS-CU, a third power value for uplink transmission of the wireless device to the first BS-DU, wherein the third power value is based on a second power value for uplink transmission of the wireless device to a second BS-DU; and
transmitting, to the BS-CU, a response confirming addition of the second BS-DU for the wireless device.
2. The method of claim 1 , wherein the second power value is transmitted in a second request from the BS-CU to the second BS-DU, the second request to add the second BS-DU for the wireless device.
3. The method of claim 2 , wherein the second request is based on a measurement report comprising one or more measurement results of at least one cell of the second BS-DU.
4. The method of claim 2 , wherein the second request further comprises an information element indicating a power control mode comprising a mode 1 or a mode 2 .
5. The method of claim 1 , wherein the first power value is a maximum allowed power for uplink transmission of the wireless device.
6. The method of claim 1 , wherein:
the third power value is a maximum allowed power for uplink transmission of the wireless device to the first BS-DU; and
the second power value is a maximum allowed power for uplink transmission of the wireless device to the second BS-DU.
7. The method of claim 1 , wherein:
the first BS-DU employs the third power value to control an uplink transmission power of the wireless device; and
the second BS-DU employs the second power value to control an uplink transmission power of the wireless device.
8. The method of claim 1 , wherein the first BS-DU provides, to the wireless device, a master cell group comprising at least one of:
a primary cell; or
one or more secondary cells.
9. The method of claim 1 , wherein the second BS-DU provides, to the wireless device, a secondary cell group comprising at least one of:
a primary secondary cell; or
one or more secondary cells.
10. The method of claim 1 , wherein the base station central unit transmits, to the wireless device, a radio resource control reconfiguration message comprising at least one of:
the third power value; or
the second power value.
11. A base station distributed unit (BS-DU) comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station distributed unit to perform operations comprising:
receiving, from a base station central unit (BS-CU), a first power value for uplink transmission of a wireless device to the first BS-DU;
receiving, from the BS-CU, a third power value for uplink transmission of the wireless device to the first BS-DU, wherein the third power value is based on a second power value for uplink transmission of the wireless device to a second BS-DU; and
transmitting, to the BS-CU, a response confirming addition of the second BS-DU for the wireless device.
12. The BS-DU of claim 11 , wherein the second power value is transmitted in a second request from the BS-CU to the second BS-DU, the second request to add the second BS-DU for the wireless device.
13. The BS-DU of claim 12 , wherein the second request is based on a measurement report comprising one or more measurement results of at least one cell of the second BS-DU.
14. The BS-DU of claim 12 , wherein the second request further comprises an information element indicating a power control mode comprising a mode 1 or a mode 2 .
15. The BS-DU of claim 11 , wherein the first power value is a maximum allowed power for uplink transmission of the wireless device.
16. The BS-DU of claim 11 , wherein:
the third power value is a maximum allowed power for uplink transmission of the wireless device to the first BS-DU; and
the second power value is a maximum allowed power for uplink transmission of the wireless device to the second BS-DU.
17. The BS-DU of claim 11 , wherein:
the first BS-DU employs the third power value to control an uplink transmission power of the wireless device; and
the second BS-DU employs the second power value to control an uplink transmission power of the wireless device.
18. The BS-DU of claim 11 , wherein the first BS-DU provides, to the wireless device, a master cell group comprising at least one of:
a primary cell; or
one or more secondary cells.
19. The BS-DU of claim 11 , wherein the second BS-DU provides, to the wireless device, a secondary cell group comprising at least one of:
a primary secondary cell; or
one or more secondary cells.
20. The BS-DU of claim 11 , wherein the base station central unit transmits, to the wireless device, a radio resource control reconfiguration message comprising at least one of:
the third power value; or
the second power value.