PATH-LOSS ESTIMATION FOR UPLINK POWER CONTROL IN A CARRIER AGREGATION ENVIRONMENT
First Claim
1. A method for uplink power control, comprising:
- receiving, at a User Equipment (UE), a component carrier list, the component carrier list compiled at an evolved Node B (eNodeB) to group multiple component carriers based on a geographic location of a transmission node of each component carrier (CC) and a frequency band in which each CC is configured to communicate;
selecting, at the UE, an estimation CC from the component carrier list on which to perform a path-loss estimation; and
estimating, at the UE, a path-loss estimation used for uplink power control for at least one CC in the CC list based on the path-loss estimation of the estimation CC.
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Accused Products
Abstract
Technology for uplink power control in a wireless network is disclosed. Receiving a component carrier list at a User Equipment (UE) is disclosed where the component carriers grouped in the list have one or more common characteristics relative to the power necessary for uplink transmission on those component carriers. A path-loss estimation performed on the downlink of a component carrier in the component carrier list can, therefore, be used to control uplink transmission for other component carriers in the list. Additionally, a UE can receive a path-loss difference parameter providing an offset for one or more factors related to the power necessary for uplink transmission between a component carrier with certain characteristics relative to those factors and a component carrier with different characteristics relative to those same factors.
66 Citations
30 Claims
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1. A method for uplink power control, comprising:
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receiving, at a User Equipment (UE), a component carrier list, the component carrier list compiled at an evolved Node B (eNodeB) to group multiple component carriers based on a geographic location of a transmission node of each component carrier (CC) and a frequency band in which each CC is configured to communicate; selecting, at the UE, an estimation CC from the component carrier list on which to perform a path-loss estimation; and estimating, at the UE, a path-loss estimation used for uplink power control for at least one CC in the CC list based on the path-loss estimation of the estimation CC. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An uplink power control device, comprising:
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a receiving module operating at the UE, the receiving module configured to receive a CC list, from an evolved Node B (eNodeB), the CC list comprising a set of CCs configured both to communicate in a same frequency band and to transmit on a downlink channel from a similar geographic transmission location; a selection module operating at the UE, the selection module in communication with the receiving module and configured to select, from the CC list, an estimation CC on which to perform a path-loss estimation; and an estimation module in communication with the selection module and configured to; perform the path-loss estimation on the estimation CC, as selected by the selection module, and determine a path-loss estimation used for uplink power control for at least one CC in the CC list based on the path-loss estimation of the estimation CC. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer program product, comprising a non-transitory computer usable medium having a computer readable program code embodied therein, the computer readable program code adapted to be executed to implement a method for uplink power control at a User Equipment (UE), comprising:
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receiving, at the UE, a CC list from an eNodeB, the CC list comprising a set of CCs configured both to communicate in a same frequency band and to transmit on a downlink channel from a similar geographic transmission location; selecting, at the UE, an estimation CC from the component carrier list on which to perform a path-loss estimation; performing a path-loss estimation on an estimation CC selected from the CC list; and estimating, at the UE, a path-loss estimation used for uplink power control for at least one CC in the CC list based on the path-loss estimation of the estimation CC. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method for uplink power control, comprising:
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grouping, at an evolved node B (eNodeB), multiple component carriers (CCs) into a CC list based on at least one of a common geographic location of a transmission node for the multiple CCs and a common frequency band in which the multiple CCs are configured to communicate; labeling, at the eNodeB, a plurality of CCs with a set of interference tags to create a plurality of interference tags according to interference information for the plurality of CCs in a interference indicator message received from a User Equipment; and transmitting the CC list and the plurality of interference tags to the UE. - View Dependent Claims (29, 30)
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Specification