Cellular Uplink Power Control with Inter-NodeB Power Control Information Exchange
First Claim
1. A method for communicating power assessments through a wireless cellular network, comprising:
- measuring a received signal strength for at least one user equipment (UE) in at least one non-serving cell site;
deriving a power assessment for the UE based on the received signal strength in the non-serving cell site; and
communicating the power assessment to at least one other cell site through a backhaul inter-cell communication.
1 Assignment
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Accused Products
Abstract
Uplink power control in a wireless cellular system is determined in a closed loop manner. Signal strength from a user equipment (UE) is measured at both the base station serving the UE and at neighboring base stations that are not serving the UE. A local power control suggestion is computed using the signal strength measurement at the serving base station. External power control suggestions are also computed using the signal strength measurements at the non-serving base stations. The external power control suggestions for a UE is communicated through inter-base station networks to the UE'"'"'s serving base station, where the local power control suggestion and the external power control suggestions are combined and a power control command is selected based on the combination. The selected power control command is then transmitted to the UE.
34 Citations
14 Claims
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1. A method for communicating power assessments through a wireless cellular network, comprising:
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measuring a received signal strength for at least one user equipment (UE) in at least one non-serving cell site; deriving a power assessment for the UE based on the received signal strength in the non-serving cell site; and communicating the power assessment to at least one other cell site through a backhaul inter-cell communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A base station configured for communicating power assessments through a wireless cellular network, comprising:
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means for deriving a local power assessment for least one user equipment (UE) based on a measured received signal strength in the serving cell site; means for receiving power assessments on the UE from one or more non-serving cell sites at the serving cell site through a backhaul inter-cell communication; means for deriving a power command by combining all or a subset of the received power assessments on the UE with the local power assessment on the UE; and means for transmitting the derived power control command to the UE via a downlink control channel, whereby the UE adjusts its transmission power according to the transmitted power control command. - View Dependent Claims (14)
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Specification