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Prediction method and device

A prediction method and a technology for predicting time, applied in wireless communication, electrical components, etc., can solve problems such as poor non-deviation, difficult state follow-up, low accuracy of system trend prediction, etc., and achieve the goal of improving reliability and accuracy Effect

Active Publication Date: 2013-12-04
SHANGHAI HUAWEI TECH CO LTD
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Problems solved by technology

Although the alpha filter prediction method has the advantage of a small amount of calculation, the accuracy of system trend prediction is low, especially when the system state fluctuates suddenly, it is difficult to follow up the system state in time. Poor deviation

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The embodiment of the present invention discloses a prediction method to improve the accuracy of state prediction of a prediction object.

[0052] see figure 1 , shows a schematic flow chart of an embodiment of a prediction method of the present invention. The method of this embodiment can be applied to systems with high real-time requirements such as wireless network systems, communication and signal processing systems, and used in wirele...

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Abstract

The invention discloses a prediction method and device. The method includes at the current predicting moment, predicting a priori estimate value of a second state and a second state observation value of a predicted object according to the last predicting moment, determining a posteriori estimate value of the second state; determining a posteriori estimate value of a second state change rate according to a first state observation value of the last predicting moment, the second state observation value, a first duration of the last predicting moment and the current predicting moment and a priori estimate value of the second state change rate; predicting a third state of the predicted object at the next predicting moment according to the posteriori estimate value of the second state, the posteriori estimate value of the second state change rate and a second duration of the current predicting moment and the next predicting moment. Analysis of two dimensions of the state and state change rate are combined in the predicting process, so that the accuracy and reliability of state prediction of the predicted object are improved.

Description

technical field [0001] The present invention relates to the technical field of filter prediction, in particular to a prediction method and device. Background technique [0002] Filtering prediction technology, also known as predictive filtering technology, is a method of estimating the state of the next moment by using a filtering algorithm and based on the historical state data of the system. The filter prediction technology has been widely used in various fields. For example, in a wireless network system, the filter prediction technology can be used to predict the transmission bandwidth, the number of online users, and the CPU usage rate. [0003] At present, when predicting a system with high real-time requirements, the alpha filter with a small amount of calculation is generally used to predict the state of the system. The alpha filter prediction algorithm generally uses the prior estimation value of the system state obtained in the previous prediction period and the st...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02
Inventor 邢睿智余小勇
Owner SHANGHAI HUAWEI TECH CO LTD
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