Method and system to model TCP throughput, assess power control measures, and compensate for fading and path loss, for highly mobile broadband systems
First Claim
1. A method for determining an optimal throughput of a communications channel in a highly mobile wireless environment, the method comprising:
- (a) selecting a power control measure;
(b) determining a throughput of the communications channel using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure; and
(c) repeating steps (a) and (b) for another power control measure; and
(d) determining the optimal throughput as a maximum one of the throughputs determined for each of the selected power control measures.
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Abstract
A method and system for determining an optimal throughput of a communications channel in a highly mobile wireless environment, which includes selecting power control measures, determining a throughput of the communications channel for each of the selected power control measures using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure, and determining the optimal throughput as a maximum one of the throughputs determined for each of the selected power control measures.
20 Citations
28 Claims
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1. A method for determining an optimal throughput of a communications channel in a highly mobile wireless environment, the method comprising:
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(a) selecting a power control measure;
(b) determining a throughput of the communications channel using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure; and
(c) repeating steps (a) and (b) for another power control measure; and
(d) determining the optimal throughput as a maximum one of the throughputs determined for each of the selected power control measures. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining an optimal power control measure for a communications channel in a highly mobile wireless environment, the method comprising:
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(a) selecting a power control measure;
(b) determining a throughput of the communications channel using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure;
(c) repeating steps (a) and (b) for another power control measure;
(d) determining the optimal throughput as a maximum one of the throughputs determined for each of the selected power control measures; and
(e) determining the optimal power control measure based on the determined optimal throughput.
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9. A method of determining an optimal TCP throughput of a wireless communications channel between a stationary element and a mobile element, the method comprising:
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comparing different power control measures under an adverse condition of the wireless communications channel using a model of TCP throughput of the wireless communications channel as a function of a probability of packet error averaged over a packet fade; and
determining a power control measure to provide an optimum TCP throughput. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of modifying a TCP throughput of a wireless communications channel in a highly mobile system, the method comprising:
dynamically adapting a transmission power of the wireless communications channel to counter fading using a power control measure, which was selected based on a throughput model of the wireless communications channel that is a function of a probability of a packet error averaged over a packet fade. - View Dependent Claims (20, 21, 23)
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22. A highly mobile wireless communications system, comprising:
a first compensation arrangement to compensate a transmission power of a communications channel to counter fading using a power control measure, which was selected based on a throughput model of the wireless communications channel that is a function of a probability of a packet error averaged over a packet fade.
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24. A method for determining a throughput of a communications channel in a highly mobile wireless environment, the method comprising:
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(a) selecting a power control measure; and
(b) determining the throughput of the communications channel using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure.
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25. A method of modifying a TCP throughput of a wireless communications channel in a highly mobile system, the method comprising:
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dynamically adapting a transmission power of the wireless communications channel to counter fading using a power control measure; and
compensating for a path loss in the highly mobile system using a model corresponding to the path loss along the path.
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26. A highly mobile wireless communications system, comprising:
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a first compensation arrangement to compensate a transmission power of a communications channel to counter fading using a power control measure; and
a second compensation arrangement to compensate for a path loss in the highly mobile wireless communications system using a model corresponding to the path loss along the path.
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27. A storage medium having a set of instructions residing therein, the set of instructions being executable by a processor to implement a method for performing:
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(a) selecting a power control measure; and
(b) determining a throughput of the communications channel using a throughput model of the communications channel and the selected power control measure, wherein the throughput model is based on a probability of a packet error averaged over a packet fade, and wherein the probability of the packet error averaged over the packet fade is a function of the selected power control measure. - View Dependent Claims (28)
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Specification