Methods and arrangements for scheduling based on power consumption

摘要

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.

主权项

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.