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Velocity adaptation method for communication system

An adaptive method and communication system technology, which is applied in the application field of communication systems, can solve problems such as slow convergence speed, and achieve fast convergence without affecting throughput

Inactive Publication Date: 2013-10-23
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above conventional technologies all need to wait or count the transmission quality for a period of time. For example, Madwifi, AMRR and RRAA algorithms need at least 10 packets to determine the transmission rate
Therefore, the algorithm converges too slowly

Method used

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  • Velocity adaptation method for communication system
  • Velocity adaptation method for communication system
  • Velocity adaptation method for communication system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] figure 1 A transmission rate adaptation method of a communication system according to an embodiment of the present invention is shown. In step 101, an initial probability density function (probability density function, PDF) of a signal to noise ratio (signal to noise ratio, SNR) of a transmission signal is set, and step 102 is entered. In step 102, the transmission rate of the transmission signal is determined according to the probability density function, and the process proceeds to step 103. In step 103, update the probability density function according to the probability density function of the acknowledgment signal or non-acknowledgement signal (NACK) of the transmission signal and the signal-to-noise ratio of the transmission signal, and return to step 102 .

[0020] The probability density function of the signal-to-noise ratio of the transmitted signal of a communication system can be defined under the known received signal strength indication (received signal st...

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Abstract

The invention provides a transmission velocity adaptation method for a communication system, which comprises the following steps of updating probability density functions according to a receiving state of transmission signals and probability density functions of the signal noise ratio of the transmission signals; and updating the transmission velocity of the transmission signals according to the updated probability density functions.

Description

technical field [0001] The invention relates to an application of a communication system, in particular to a rate adaptation method of the communication system. Background technique [0002] In general communication systems, especially wireless communication systems, the transmission environment will be constantly changed by various external factors (such as climate, receiving distance, travel speed and noise, etc.), so the initial transmission rate of the communication system may not be consistent with subsequent transmissions. environment. If the changed transmission environment can accept a higher transmission rate than the initial transmission rate, the communication system wastes available transmission resources. Conversely, if the changed transmission environment cannot accept a transmission rate higher than the initial transmission rate, the throughput of the communication system will drop significantly. Therefore, it is necessary to timely adapt the transmission ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16
Inventor 杜勇赐陈俊才
Owner MEDIATEK INC