Quality upgrading method for fast Blue Tooth wireless network band

Abstract

The invention relates to a method for refreshing the program quality in blue-tooth wireless network, wherein it comprises: when the blue-tooth main device transmits in useful program, fixing the quality of signal channel to transmit one transmission groove; the main device makes all blue teeth of blue-tooth wireless network into one frequency hopping mode; at the later half of transmission groove, the main device, based on one unavailable program and one useful program switches the program, and receives and calculates out the interference strength of unavailable programs and useful program; at least, before the start point of next receiving groove, the main device switches the program to useful one, to complete refreshing program quality.

Description

technical field [0001] The invention relates to a method for updating the channel quality of a bluetooth wireless network, in particular to a method for quickly updating the channel quality of the bluetooth wireless network. Background technique [0002] In an environment where a Bluetooth wireless network coexists with other standard wireless networks, the interference between different wireless devices will significantly reduce the transmission rate. Since the Bluetooth system uses spread spectrum modulation (Spread Spectrum Modulation), and its spread spectrum method is frequency hopping (Frequency Hopping), so the Bluetooth device can avoid interference by skipping the channels occupied by other wireless devices. However, before effectively skipping occupied channels, it is necessary to have a clear understanding of the occupied conditions of each channel. [0003] The current Bluetooth standard does not specify a method for channel quality estimation, but it is left to...

AI Technical Summary

Problems solved by technology

[0004] The advantage of the first method is that the structure is simple, and the disadvantage is that it is not easy to determine the critical value of the received signal strength of the available and unavailable channels

The advantage of the second method is that it is accurate. The disadvantage is that the packet detector for detecting other wireless devices must be installed in the Bluetooth receiver, thereby increasing the cost. undetectable

The advantage of the third method is also accurate, but the disadvantage is that the mechanism for calculating the error rate is not clearly stipulated, so the problem of compatibility between devices from various manufacturers has become increasingly prominent

[0008] However, the error rate method used in this patent has the problem that the channel quality update (Channel QualityUpdate) is slightly slower. If the channel quality changes slightly faster, and the channel quality estimation cannot be updated quickly, it will cause some applications, such as In the real-time audio-visual transmission, there is a situation where the quality of the transmitted content is not good, which will cause very unpleasant feelings to the user's vision and hearing. Therefore, how to achieve fast and accurate channel quality estimation update in the Bluetooth packet transmission becomes a problem in real-time audio-visual transmission. very important subject

Images