Methods and arrangements for scheduling based on power consumption
First Claim
1. A network node for use in a wireless communications system comprising:
- a scheduler for controlling transmission, by a transmit unit, of application data over a radio interface;
wherein the scheduler comprises;
a first interface configured to receive, from a radio resource estimator, information about estimated required average output transmission power of the transmit unit for transmitting an amount of application data in a time interval;
a second interface configured to receive information about a power consumption profile of the transmit unit, wherein the power consumption profile is the power consumption of the transmit unit as a function of output transmission power;
processing circuits configured to make a scheduling decision comprising a type of load distribution to be used in the time interval for transmitting the amount of application data based on the information about the power consumption profile and the information about the estimated required average output transmission power, the scheduling decision being such that, in response to the power consumption profile being a convex function in an interval including the estimated required average output transmission power, the load distribution to be used is a power wise load distribution according to which the amount of application data is transmitted continuously in the time interval in consecutive data transmission units at a selected low transmission power level;
a third interface for providing the scheduling decision to the transmit unit as a scheduling order.
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Abstract
The present invention relates to a network node and a method in method in a network node of a wireless communications system that allow for power efficient scheduling of transmission of application data over a radio interface. According to the method, information is received (71, 72) about a power consumption profile of a transmit unit and about estimated required average output transmission power of the transmit unit for transmitting an amount of application data in a time interval. The method also includes a step of making (73) a scheduling decision, comprising a type of load distribution to be used in the time interval for transmitting the amount of application data, based on the received information. In another step (74) the scheduling decision is provided to the transmit unit as a scheduling order for transmission of the application data over the radio interface. The invention also relates to a mobile station and core network node configured to provide a network node with power consumption profile information.
21 Citations
22 Claims
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1. A network node for use in a wireless communications system comprising:
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a scheduler for controlling transmission, by a transmit unit, of application data over a radio interface; wherein the scheduler comprises; a first interface configured to receive, from a radio resource estimator, information about estimated required average output transmission power of the transmit unit for transmitting an amount of application data in a time interval; a second interface configured to receive information about a power consumption profile of the transmit unit, wherein the power consumption profile is the power consumption of the transmit unit as a function of output transmission power; processing circuits configured to make a scheduling decision comprising a type of load distribution to be used in the time interval for transmitting the amount of application data based on the information about the power consumption profile and the information about the estimated required average output transmission power, the scheduling decision being such that, in response to the power consumption profile being a convex function in an interval including the estimated required average output transmission power, the load distribution to be used is a power wise load distribution according to which the amount of application data is transmitted continuously in the time interval in consecutive data transmission units at a selected low transmission power level; a third interface for providing the scheduling decision to the transmit unit as a scheduling order. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method in a network node of a wireless communications system for scheduling transmission of application data over a radio interface, the method comprising:
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receiving information about a power consumption profile of a transmit unit, wherein the power consumption profile is the power consumption of the transmit unit as a function of output transmission power; receiving, from a radio resource estimator, information about estimated required average output transmission power of the transmit unit for transmitting an amount of application data in a time interval; making a scheduling decision, comprising a type of load distribution to be used in the time interval for transmitting the amount of application data, based on the information about the power consumption profile and the information about the estimated required average output transmission power, the scheduling decision being such that, in response to the power consumption profile being a convex function in an interval including the estimated required average output transmission power, the load distribution to be used is a power wise load distribution according to which the amount of application data is transmitted continuously in the time interval in consecutive data transmission units at a selected low transmission power level; providing the scheduling decision to the transmit unit as a scheduling order for transmission of the application data over the radio interface. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A mobile station for use in a wireless communications system, the mobile station comprising:
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processing circuits; a transmitter, operatively connected to the processing circuits, and configured to transmit, to a network node, information about a power consumption profile of the mobile station that enables the network node to; make a determination of whether the power consumption profile corresponds to a convex function or concave function for at least one interval of output transmission power; and perform uplink scheduling based on the determination; wherein the power consumption profile is the power consumption of the mobile station as a function of output transmission power; wherein the information about the power consumption profile is an indication of whether the power consumption profile is a convex or concave function for different intervals of output transmission power.
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22. A core network node of a wireless communications system, which core network node comprises:
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a memory storing a database with information about power consumption profiles of a number of different types of mobile stations, wherein a power consumption profile is the power consumption of a mobile station as a function of output transmission power, wherein the information about the power consumption profiles is; associated with International Mobile Equipment Identity (IMEI) of the respective types of mobile stations; and an indication of whether the power consumption profile is a convex or concave function for different intervals of output transmission power; processing circuits and an interface configured to; receive a request from a radio network node comprising a scheduler for controlling transmissions over a radio interface, the request including an IMEI; transmit the information about the power consumption profile associated with the received IMEI to the radio network node to allow for uplink scheduling based on the information about the power consumption profile.
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Specification