Method, network device, computer program and computer program product for determining a set of power state parameters
First Claim
1. A method, performed by a network device, for providing to a wireless terminal a set of power state parameters, the method comprising:
- for each one of a plurality of traffic flows, obtaining a traffic characterization parameter, wherein the plurality of traffic flows comprises a first traffic flow and a second traffic flow, and obtaining a traffic characterization parameter for each one of the plurality of traffic flows comprises obtaining a first traffic characterization parameter for the first traffic flow and obtaining a second traffic characterization parameter for the second traffic flow;
for each one of the plurality of traffic flows, identifying an optimal set of power state parameters for the traffic flow by performing a process comprising;
1) simulating a first set of power state parameters on the first traffic flow to produce first simulation results;
2) determining a first cost based on the first simulation results;
3) simulating a second set of power state parameters on the first traffic flow to produce second simulation results;
4) determining a second cost based on the second simulation results;
5) determining whether the first cost is less than second cost;
6) as a result of determining that the first cost is less than the second cost, identifying the first set of power state parameters as the optimal set of power state parameters for the first traffic flow;
7) simulating the first set of power state parameters on the second traffic flow to produce third simulation results;
8) determining a third cost based on the third simulation results;
9) simulating the second set of power state parameters on the second traffic flow to produce fourth simulation results;
10) determining a fourth cost based on the fourth simulation results;
11) determining whether the third cost is less than fourth cost; and
12) as a result of determining that the fourth cost is less than the third cost, identifying the second set of power state parameters as the optimal set of power state parameters for the second traffic flow;
obtaining an operational traffic characterization parameter based on operational traffic to or from the wireless terminal;
selecting one of the plurality of traffic flows based on the obtained operational traffic characterization parameter;
selecting an applicable set of power state parameters based on the selected traffic flow, wherein selecting the applicable set of power state parameters based on the selected traffic flow comprises selecting the set of power state parameters that has been identified as the optimal set of power state parameters for the selected traffic flow; and
sending the applicable set of power state parameters to the wireless terminal.
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Abstract
According to a first aspect, it is presented a method, performed by a network device, for determining a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state. The method comprises the steps of: obtaining at least one traffic characterization parameter; for each traffic flow, simulating a plurality of sets of power state parameters; obtaining at least one operational traffic characterization parameter; associating the operational traffic with a selected traffic flow; finding an applicable set of power state parameters by finding a set of power state parameters with a low cost, wherein the set of power state parameters are associated with the selected traffic flow; and sending the applicable set of power state parameters to the wireless terminal in operation. A corresponding network node, computer program and computer program product are also presented.
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Citations
23 Claims
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1. A method, performed by a network device, for providing to a wireless terminal a set of power state parameters, the method comprising:
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for each one of a plurality of traffic flows, obtaining a traffic characterization parameter, wherein the plurality of traffic flows comprises a first traffic flow and a second traffic flow, and obtaining a traffic characterization parameter for each one of the plurality of traffic flows comprises obtaining a first traffic characterization parameter for the first traffic flow and obtaining a second traffic characterization parameter for the second traffic flow; for each one of the plurality of traffic flows, identifying an optimal set of power state parameters for the traffic flow by performing a process comprising; 1) simulating a first set of power state parameters on the first traffic flow to produce first simulation results; 2) determining a first cost based on the first simulation results; 3) simulating a second set of power state parameters on the first traffic flow to produce second simulation results; 4) determining a second cost based on the second simulation results; 5) determining whether the first cost is less than second cost; 6) as a result of determining that the first cost is less than the second cost, identifying the first set of power state parameters as the optimal set of power state parameters for the first traffic flow; 7) simulating the first set of power state parameters on the second traffic flow to produce third simulation results; 8) determining a third cost based on the third simulation results; 9) simulating the second set of power state parameters on the second traffic flow to produce fourth simulation results; 10) determining a fourth cost based on the fourth simulation results; 11) determining whether the third cost is less than fourth cost; and 12) as a result of determining that the fourth cost is less than the third cost, identifying the second set of power state parameters as the optimal set of power state parameters for the second traffic flow; obtaining an operational traffic characterization parameter based on operational traffic to or from the wireless terminal; selecting one of the plurality of traffic flows based on the obtained operational traffic characterization parameter; selecting an applicable set of power state parameters based on the selected traffic flow, wherein selecting the applicable set of power state parameters based on the selected traffic flow comprises selecting the set of power state parameters that has been identified as the optimal set of power state parameters for the selected traffic flow; and sending the applicable set of power state parameters to the wireless terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A network device arranged to provide to a wireless terminal a set of power state parameters, the network device comprising:
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a processor; and a computer program product storing instructions that, when executed by the processor, causes the network device to; for each one of a plurality of traffic flows, obtain a traffic characterization parameter, wherein the plurality of traffic flows comprises a first traffic flow and a second traffic flow, and obtaining a traffic characterization parameter for each one of the plurality of traffic flows comprises obtaining a first traffic characterization parameter for the first traffic flow and obtaining a second traffic characterization parameter for the second traffic flow; for each one of the plurality of traffic flows, identify an optimal set of power state parameters for the traffic flow by performing a process comprising; 1) simulating a first set of power state parameters on the first traffic flow to produce first simulation results; 2) determining a first cost based on the first simulation results; 3) simulating a second set of power state parameters on the first traffic flow to produce second simulation results; 4) determining a second cost based on the second simulation results; 5) determining whether the first cost is less than second cost; 6) as a result of determining that the first cost is less than the second cost, identifying the first set of power state parameters as the optimal set of power state parameters for the first traffic flow; 7) simulating the first set of power state parameters on the second traffic flow to produce third simulation results; 8) determining a third cost based on the third simulation results; 9) simulating the second set of power state parameters on the second traffic flow to produce fourth simulation results; 10) determining a fourth cost based on the fourth simulation results; 11) determining whether the third cost is less than fourth cost; and 12) as a result of determining that the fourth cost is less than the third cost, identifying the second set of power state parameters as the optimal set of power state parameters for the second traffic flow; obtain an operational traffic characterization parameter based on operational traffic to or from the wireless terminal; select one of the plurality of traffic flows based on the obtained operational traffic characterization; select an applicable set of power state parameters based on the selected traffic flow, wherein selecting the applicable set of power state parameters based on the selected traffic flow comprises selecting the set of power state parameters that has been identified as the optimal set of power state parameters for the selected traffic flow; and send the applicable set of power state parameters to the wireless terminal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer program product comprising a non-transitory computer readable medium storing a computer program for determining a set of power state parameters at least partly defining when a wireless terminal is to be in an active state or a power saving state, the computer program comprising computer program code which, when run on a network device, causes the network device to:
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for each one of a plurality of traffic flows, obtain a traffic characterization parameter, wherein the plurality of traffic flows comprises a first traffic flow and a second traffic flow, and obtaining a traffic characterization parameter for each one of the plurality of traffic flows comprises obtaining a first traffic characterization parameter for the first traffic flow and obtaining a second traffic characterization parameter for the second traffic flow; for each one of the plurality of traffic flows, identify an optimal set of power state parameters for the traffic flow by performing a process comprising; 1) simulating a first set of power state parameters on the first traffic flow to produce first simulation results; 2) determining a first cost based on the first simulation results; 3) simulating a second set of power state parameters on the first traffic flow to produce second simulation results; 4) determining a second cost based on the second simulation results; 5) determining whether the first cost is less than second cost; 6) as a result of determining that the first cost is less than the second cost, identifying the first set of power state parameters as the optimal set of power state parameters for the first traffic flow; 7) simulating the first set of power state parameters on the second traffic flow to produce third simulation results; 8) determining a third cost based on the third simulation results; 9) simulating the second set of power state parameters on the second traffic flow to produce fourth simulation results; 10) determining a fourth cost based on the fourth simulation results; 11) determining whether the third cost is less than fourth cost; and 12) as a result of determining that the fourth cost is less than the third cost, identifying the second set of power state parameters as the optimal set of power state parameters for the second traffic flow; obtain an operational traffic characterization parameter based on operational traffic to or from the wireless terminal; select one of the plurality of traffic flows based on the obtained operational traffic characterization; select an applicable set of power state parameters based on the selected traffic flow, wherein selecting the applicable set of power state parameters based on the selected traffic flow comprises selecting the set of power state parameters that has been identified as the optimal set of power state parameters for the selected traffic flow; and send the applicable set of power state parameters to the wireless terminal.
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22. A method, performed by a network device, for providing to a wireless terminal a set of power state parameters, the method comprising:
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for each one of a plurality of traffic flows, obtaining a traffic characterization parameter; for each one of the plurality of traffic flows, simulating a plurality of sets of power state parameters on the traffic flow, wherein, for each set of power state parameters, a cost is evaluated; obtaining an operational traffic characterization parameter based on operational traffic to or from the wireless terminal; associating the operational traffic with a selected traffic flow, selected from the plurality of traffic flows using the operational traffic characterization parameter; finding an applicable set of power state parameters by finding a set of power state parameters with a low cost, wherein the set of power state parameters are associated with the selected traffic flow; and sending the applicable set of power state parameters to the wireless terminal, wherein the step of associating the operational traffic with a selected traffic flow, selected from the plurality of traffic flows using the at least one operational traffic characterization parameter comprises;
i) determining which one of the plurality of traffic flows is most similar to the operational traffic flow based on the operational traffic characterization and the obtained traffic characterization parameters; and
ii) selecting from the plurality of traffic flows the traffic flow that is determined to be most similar to the operational traffic flow,the plurality of sets of power state parameters comprises a first set of power state parameters and a second set of power state parameters, the plurality of traffic flows comprises a first traffic flow and a second traffic flow, and the step of, for each traffic flow, simulating a plurality of sets of power state parameters on the traffic flow, wherein, for each set of power state parameters, a cost is evaluated comprises; performing a first simulation on the first traffic flow using the first set of power state parameters; determining, based on the first simulation, one of;
a first power usage amount and a first network device resource usage;determining a first cost based on one of the determined first power usage amount and the determined first network device resource usage; associating the first cost with the first traffic flow and the first set of power state parameters; performing a second simulation on the first traffic flow using the second set of power state parameters; determining, based on the second simulation, one of;
a second power usage amount and a second network device resource usage;determining a second cost based on of the determined second power usage amount and the determined second network device resource usage; and associating the second cost with the first traffic flow and the second set of power state parameters.
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23. A method, performed by a network device, for providing to a wireless terminal a set of power state parameters, the method comprising:
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for each one of a plurality of traffic flows, obtaining a traffic characterization parameter; for each one of the plurality of traffic flows, simulating a plurality of sets of power state parameters on the traffic flow, wherein, for each set of power state parameters, a cost is evaluated; obtaining an operational traffic characterization parameter based on operational traffic to or from the wireless terminal; associating the operational traffic with a selected traffic flow, selected from the plurality of traffic flows using the operational traffic characterization parameter; finding an applicable set of power state parameters by finding a set of power state parameters with a low cost, wherein the set of power state parameters are associated with the selected traffic flow; and sending the applicable set of power state parameters to the wireless terminal, wherein the step of associating the operational traffic with a selected traffic flow, selected from the plurality of traffic flows using the at least one operational traffic characterization parameter comprises;
i) determining which one of the plurality of traffic flows is most similar to the operational traffic flow based on the operational traffic characterization and the obtained traffic characterization parameters; and
ii) selecting from the plurality of traffic flows the traffic flow that is determined to be most similar to the operational traffic flow,the step of finding the applicable set of power state parameters by finding the set of power state parameters with the low cost, wherein the set of power state parameters are associated with the selected traffic flow, comprises; determining a first cost associated with the selected traffic flow; determining a second cost associated with the selected traffic flow; determining whether the first cost is less than the second cost; as a result of determining that the first cost is less than the second cost, determining a set of power state parameters associated with the first cost; and selecting the set of power state parameters associated with the first cost as the applicable set of power state parameters.
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Specification