Methods and nodes for multiple user MIMO scheduling and power control
First Claim
1. A method in a radio base station of a wireless network, for supporting uplink power control when performing Multiple User Multiple-Input-Multiple-Output scheduling, the method comprising when scheduling a first user equipment (UE) in pair with a second UE, or scheduling the first UE de-paired from the second UE:
- transmitting an indication to the first UE to use a power adaptation parameter for uplink transmission power control, wherein the power adaptation parameter enables the first UE to adapt an uplink transmission power to an interference change due to pairing or de-pairing with the second UE.
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Accused Products
Abstract
The present invention relates to a method in a first User Equipment (UE) served by a radio base station (RBS) of a wireless network, for uplink power control at Multiple User Multiple-Input-Multiple-Output (MU-MIMO) scheduling. The method comprises obtaining a power adaptation parameter for use in uplink transmission power control when the first UE is scheduled to be in pair with a second UE, or is scheduled to be de-paired from the second UE. The method also comprises receiving an indication from the radio base station to use the obtained power adaptation parameter in uplink transmission power control, and adapting an uplink transmission power based on the obtained power adaptation parameter and the received indication. The present invention also relates to the corresponding method in the RBS, and to the UE and the RBS.
9 Citations
30 Claims
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1. A method in a radio base station of a wireless network, for supporting uplink power control when performing Multiple User Multiple-Input-Multiple-Output scheduling, the method comprising when scheduling a first user equipment (UE) in pair with a second UE, or scheduling the first UE de-paired from the second UE:
transmitting an indication to the first UE to use a power adaptation parameter for uplink transmission power control, wherein the power adaptation parameter enables the first UE to adapt an uplink transmission power to an interference change due to pairing or de-pairing with the second UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method in a first User Equipment (UE) served by a radio base station of a wireless network, for uplink power control at Multiple User Multiple-Input-Multiple-Output scheduling, the method comprising:
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obtaining a power adaptation parameter for use in uplink transmission power control when the first UE is scheduled to be in pair with a second UE, or is scheduled to be de-paired from the second UE; receiving an indication from the radio base station to use the obtained power adaptation parameter in uplink transmission power control; and adapting an uplink transmission power based on the obtained power adaptation parameter and the received indication, wherein the power adaptation parameter comprises a first transmission power offset for uplink transmission power control when the first UE is scheduled to be in pair with the second UE, and a second transmission power offset for uplink transmission power control when the first UE is scheduled to be de-paired from the second UE. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A radio base station of a wireless network, configured to support uplink power control when performing Multiple User Multiple-Input-Multiple-Output scheduling, the radio base station comprising:
a transmitter configured to transmit an indication to a first user equipment (UE) to use a power adaptation parameter for uplink transmission power control when the radio base station schedules the first UE to be in pair with a second UE, or schedules the first UE to be de-paired from the second UE, wherein the power adaptation parameter enables the first UE to adapt an uplink transmission power to an interference change due to pairing or de-pairing with the second UE. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A first User Equipment (UE) configured to be served by a radio base station of a wireless network, and configured for uplink power control at Multiple User Multiple-Input-Multiple-Output scheduling, the first UE comprising:
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a processing circuit configured to obtain a power adaptation parameter for use in uplink transmission power control when the first UE is scheduled to be in pair with a second UE, or is scheduled to be de-paired from the second UE, and a receiver configured to receive an indication from the radio base station to use the obtained power adaptation parameter in uplink transmission power control, wherein the use of the obtained power adaptation parameter based on the received indication, enables the first UE to adapt an uplink transmission power to an interference change due to pairing or de-pairing with the second UE. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification