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US 12,707,404 B2Granted
Transmission power management
AssigneeNokia Technologies Oy
InventorsEsa Tapani Tiirola, Arto Lehti, Axel Mueller, Amir Mehdi Ahmadian Tehrani
Life of this patent
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Abstract
Certain examples of the present disclosure relate to a User Equipment, UE, (110) comprising means for: determining a first total amount of energy (ETx(TW1)) that has been transmitted by the UE within a first time window (TW1); and determining a first transmission power (PmaxTx(i)) that is allowed for a transmission (Tx(i)) by the UE within the first time window, TW1 wherein the first transmission power is determined based, at least in part, on the first total amount of energy (ETx(TW1)) that has been transmitted by the UE within the first time window (TW1).
Claims13
A User Equipment (UE), comprising:
- at least one processor;
- and
- at least one memory including instructions,
- wherein the at least one memory and the instructions are configured to, with the at least one processor, cause the user equipment to perform operations comprising:
- receive, from a gNodeB (gNB) through a dedicated Radio Resource Control (RRC) signalling, a set of configuration parameters for an energy-based power boost calculation, wherein the set of configuration parameters comprises:
- a first time window (TW1) comprising N slots, wherein each of the N slots comprises up to 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols,
- a second time window (TW2), within the first time window, comprising M slots, wherein each of the M slots comprises up to the 14 OFDM symbols, and wherein a number of M slots is less than a number of N slots,
- a first parameter value (X1) to enable an adjustment of sharing of an available transmission energy for the first time window over time, wherein the first parameter value (X1) is one of:
- equal to the number of N slots, less than the number of N slots, or larger than the number of N slots,
- a second parameter value (X2) to enable an adjustment of sharing of an available transmission energy for the second time window over time, wherein the second parameter value (X2) is one of:
- equal to the number of M slots, less than the number of M slots, or larger than the number of M slots,
- a first allowed transmission energy permitted over the first time window,
- a second allowed transmission energy permitted over the second time window, and
- a predetermined maximum transmission power permitted for the UE based on Specific Absorption Rate (SAR) and Equivalent Isotropic Radiated Power (EIRP) regulatory limits;
- determine a first total amount of energy transmitted by the UE within the first time window prior to a current transmission in an ith slot of the first time window, wherein the first total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of N slots within the first time window prior to the current transmission in the ith slot;
- determine a second total amount of energy transmitted by the UE within the second time window prior to the current transmission in the ith slot, wherein the second total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of M slots within the second time window prior to the current transmission in the ith slot;
- determine a number of symbols to be transmitted in the ith slot;
- and
- determine a first transmission power allowed for the current transmission in the ith slot of the first time window, by;
- calculating a first available transmission energy available for the current transmission in the ith slot with respect to the first time window as a difference between the first allowed transmission energy and the determined first total amount of energy and dividing the difference between the first allowed transmission energy and the determined first total amount of energy by the first parameter value;
- calculating a second available transmission energy available for the current transmission in the ith slot with respect to the second time window as a difference between the second allowed transmission energy and the determined second total amount of energy and dividing the difference between the second allowed transmission energy and the determined second total amount of energy by the second parameter value;
- determining a final available transmission energy as the minimum of the first available transmission energy and the second available transmission energy;
- calculating a third transmission power for the current transmission in the ith slot by dividing the determined final available transmission energy by the determined number of symbols to be transmitted in the ith slot;
- and
- determining the first transmission power as a minimum of the third transmission power and the predetermined maximum transmission power.
22 more elements
A method for a User Equipment (UE), the method comprising:
- receiving, from a gNodeB (gNB) through a dedicated Radio Resource Control (RRC) signalling, a set of configuration parameters for an energy-based power boost calculation, wherein the set of configuration parameters comprises:
- a first time window (TW1) comprising N slots, wherein each of the N slots comprises up to 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols,
- a second time window (TW2), within the first time window, comprising M slots, wherein each of the M slots comprises up to the 14 OFDM symbols, and wherein a number of M slots is less than a number of N slots,
- a first parameter value (X) to enable an adjustment of sharing of an available transmission energy for the first time window over time, wherein the first parameter value (X1) is one of:
- equal to the number of N slots, less than the number of N slots, or larger than the number of N slots,
- a second parameter value (X2) to enable an adjustment of sharing of an available transmission energy for the second time window over time, wherein a the second parameter value (X2) is one of:
- equal to the number of M slots, less than the number of M slots, or larger than the number of M slots,
- a first allowed transmission energy (EallowedTx(TW1)) permitted over the first time window,
- a second allowed transmission energy (EallowedTx(TW2)) permitted over the second time window, and
- a predetermined maximum transmission power (Pregulated) permitted for the UE based on Specific Absorption Rate (SAR) and Equivalent Isotropic Radiated Power (EIRP) regulatory limits;
- determining a first total amount of energy (ETx(TW1)) transmitted by the UE within the first time window prior to a current transmission in an ith slot of the first time window, wherein the first total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of the N slots within the first time window prior to the current transmission in the ith slot;
- determining a second total amount of energy (ETx(TW2)) transmitted by the UE within the second time window prior to the current transmission in the ith slot, wherein the second total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of the M slots within the second time window prior to the current transmission in the ith slot;
- determining a number of symbols to be transmitted in the ith slot;
- and
- determining a first transmission power (PmaxTx(i)) allowed for the current transmission in the ith slot of the first time window, by;
- calculating a first available transmission energy (Eavailable(i)) available for the current transmission in the ith slot with respect to the first time window as a difference between the first allowed transmission energy (EallowedTx(TW1)) and the determined first total amount of energy (ETx(TW1)) and dividing the difference between the first allowed transmission energy (EallowedTx(TW1)) and the determined first total amount of energy (ETx(TW1)) by the first parameter value (X);
- calculating a second available transmission energy (Eavailable(i)TW2) available for the current transmission in the ith slot with respect to the second time window as a difference between the second allowed transmission energy (EallowedTx(TW2)) and the determined second total amount of energy (ETx(TW2)) and dividing the difference between the second allowed transmission energy (EallowedTx(TW2)) and the determined second total amount of energy (ETx(TW2)) by the second parameter value (X2);
- determining a final available transmission energy as the minimum of the first available transmission energy (Eavailable(i)) and the second available transmission energy (Eavailable(i)TW2);
- calculating a third transmission power for the current transmission in the ith slot by dividing the determined final available transmission energy by the determined number of symbols to be transmitted in the ith slot;
- and
- determining the first transmission power as a minimum of the third transmission power and the predetermined maximum transmission power.
18 more elements
A non-transitory computer readable medium comprising computer program instructions for a User Equipment (UE) which, when executed by an apparatus, cause the UE at least to perform operations comprising:
- receiving, from a gNodeB (gNB) through a dedicated Radio Resource Control (RRC) signalling, a set of configuration parameters for an energy-based power boost calculation, wherein the set of configuration parameters comprises:
- a first time window (TW1) comprising N slots, wherein each of the N slots comprises up to 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols,
- a second time window (TW2), within the first time window, comprising M slots, wherein each of the M slots comprises up to the 14 OFDM symbols, and wherein a number of M slots is less than a number of N slots,
- a first parameter value (X) to enable an adjustment of sharing of an available transmission energy for the first time window over time, wherein a the first parameter value (X1) is one of:
- equal to the number of N slots, less than the number of N slots, or larger than the number of N slots,
- a second parameter value (X2) to enable an adjustment of sharing of an available transmission energy for the second time window over time, wherein the second parameter value (X2) is one of:
- equal to the number of M slots, less than the number of M slots, or larger than the number of M slots,
- a first allowed transmission energy (EallowedTx(TW1)) permitted over the first time window,
- a second allowed transmission energy (EallowedTx(TW2)) permitted over the second time window, and
- a predetermined maximum transmission power (Pregulated) permitted for the UE based on Specific Absorption Rate (SAR) and Equivalent Isotropic Radiated Power (EIRP) regulatory limits;
- determining a first total amount of energy (ETx(TW1)) transmitted by the UE within the first time window prior to a current transmission in an ith slot of the first time window, wherein the first total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of the N slots within the first time window prior to the current transmission in the ith slot;
- determining a second total amount of energy (ETx(TW2)) transmitted by the UE within the second time window prior to the current transmission in the ith slot, wherein the second total amount of energy is calculated as a sum of energy transmitted over the OFDM symbols in each of the M slots within the second time window prior to the current transmission in the ith slot;
- determining a number of symbols to be transmitted in the ith slot;
- and
- determining a first transmission power (PmaxTx(i)) allowed for the current transmission in the ith slot of the first time window, by;
- calculating a first available transmission energy (Eavailable(i)) available for the current transmission in the ith slot with respect to the first time window as a difference between the first allowed transmission energy (EallowedTx(TW1)) and the determined first total amount of energy (ETx(TW1)) and dividing the difference between the first allowed transmission energy (EallowedTx(TW1)) and the determined first total amount of energy (ETx(TW1)) by the first parameter value (X);
- calculating a second available transmission energy (Eavailable(i)TW2) available for the current transmission in the ith slot with respect to the second time window as a difference between the second allowed transmission energy (EallowedTx(TW2)) and the determined second total amount of energy and dividing the difference between the second allowed transmission energy (EallowedTx(TW2)) and the determined second total amount of energy (ETx(TW2)) by the second parameter value (X2);
- determining a final available transmission energy as the minimum of the first available transmission energy (Eavailable(i)) and the second available transmission energy (Eavailable(i)TW2);
- calculating a third transmission power for the current transmission in the ith slot by dividing the determined final available transmission energy by the determined number of symbols to be transmitted in the ith slot;
- and
- determining the first transmission power as a minimum of the third transmission power and the predetermined maximum transmission power.
18 more elements
Dependencies are inferred from the claim text.