Dynamic sar emission control to minimize rf exposure
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorMuhammad Kazmi
Life of this patent
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Abstract
A network node determines one or more parameters related to a Specific Absorption Rate (SAR) target, where SAR is a measure of a maximum energy or power absorbed by a unit of mass of tissue exposed to radio frequency (RF) electromagnetic field (EMF) radiation generated as a result of radio transmissions generated by a UE. The network node generates content for a message for transmission to the UE including the determined one or more SAR-related parameters to be applied by a transmitter in the UE. Based on those one or more SAR-related parameters, the UE determines and implements an action in order to meet the SAR target. Other example embodiments permit the UE to determine the SAR-related parameters in other ways.
Claims31
-30. (canceled)
A method in a radio user equipment (UE), comprising:
- receiving from a radio communications network one or more parameters related to a Specific Absorption Rate (SAR) target, where SAR is a measure of a maximum energy or power absorbed by a unit of mass of tissue exposed to radio frequency (RF) electromagnetic field (EMF) radiation generated as a result of radio transmissions generated by the UE;
- based on the one or more SAR-related parameters, determining an action to be taken by the UE in order to meet the SAR target;
- and
- implementing the action.
A method in a first network node communicating with a radio user equipment (UE), comprising:
- determining one or more parameters related to a Specific Absorption Rate (SAR) target, where SAR is a measure of a maximum energy or power absorbed by a unit of mass of tissue exposed to radio frequency (RF) electromagnetic field (EMF) radiation
- generated as a result of radio transmissions generated by the UE, and generating content for a message for transmission to the UE including the determined one or more SAR-related parameters to be applied by a transmitter in the UE in order to meet the SAR target.
A radio user equipment (UE) configured to communicate with a network over a radio interface, the UE comprising:
- radio transmission and reception circuitry, and
- processing circuitry, coupled with the radio circuitry, configured to:
- determine Specific Absorption Rate (SAR)-related input, where SAR is a measure of a maximum energy or power absorbed by a unit of mass of tissue exposed to radio frequency (RF) electromagnetic field (EMF) radiation generated as a result of radio transmissions generated by the UE;
- determine a transmit power to conform with a SAR target that is based on the SAR-related input;
- and
- control operating of the radio transmission circuitry to conform with the SAR target based on the determined transmit power.
A first network node configured to communicate with a radio user equipment (UE), comprising:
- processing circuitry configured to:
- determine one or more parameters related to a Specific Absorption Rate (SAR) target, where SAR is a measure of a maximum energy or power absorbed by a unit of mass of tissue exposed to radio frequency (RF) electromagnetic field (EMF) radiation generated as a result of radio transmissions generated by the UE, and
- generate content for a message for transmission to the UE including the determined one or more SAR-related parameters to be applied by a transmitter in the UE in order to meet the SAR target, and
- interface circuitry configured to provide the message for transmission.
Dependencies are inferred from the claim text.