A realization method of zigbee-bluetooth communication

Abstract

The invention relates to the technical field of digital information transmission, and discloses a ZigBee-Bluetooth communication implementation method, comprising: step 1, sampling clock offset determination and sampling clock offset estimation; step 2, sampling clock offset compensation; step 3, preamble The code matches the access address; Step 4, receiving data processing; Step 5, Bluetooth upper layer protocol processing payload information. The present invention realizes the cross-protocol communication of the Bluetooth receiver to ZigBee-Bluetooth under the premise of being compatible with the communication between Bluetooth, and realizes the compatibility of the Bluetooth upper layer protocol and the fault-tolerant mechanism of the cross-protocol communication through mechanisms such as code book mapping; and according to the sampling clock deviation shift determination and sampling clock offset estimation results, reasonable sampling clock offset compensation, reducing the degree of modification to the receiver hardware; and because of the certainty of receiver sampling offset, the bluetooth receiver codebook mapping mechanism of the present invention The calculation cost is one-fourth of the cross decoding, which greatly reduces the receiving calculation cost and matching cost of the Bluetooth receiver.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to a method for realizing ZigBee-Bluetooth communication. Background technique [0002] The development of the Internet of Things era has brought great convenience to modern life, and also promoted the rapid development of wireless technologies represented by Wi-Fi, ZigBee and Bluetooth, which are adapted to different system performance and environmental requirements (such as Communication distance, device power consumption, throughput, etc.). However, the use of wireless technology depends on the allocation of spectrum resources. Commercial wireless technologies represented by IEEE802.11 / Wi-Fi, IEEE802.15.4 / ZigBee, Bluetooth, etc. all work in the unlicensed ISM (Industrial Scientific Medical Band) 2.4 GHz frequency band, communication channels of different technologies have a large overlap in frequency (see figure 1 ). Since protocols such as Wi-Fi, ZigB...

AI Technical Summary

Problems solved by technology

At the same time, due to the uncertainty of the mapping matrix, the original function of the receiver's preamble: configure the automatic gain through the preamble to determine the frequency used by "0" and "1". The preamble cannot be simulated deterministically, so it cannot be realized

When the sampling offset is small, the phase change between the two points of the sampling judgment is reduced, which will lead to a decrease in the judgment accuracy, and such sampling judgment is easily affected by the propagation in the medium (see figure 2 )

PatternBee judges the entire symbol by identifying the characteristic fragments in the ZigBee symbol. Compared with the entire sequence to judge the symbol, the stability is poor, and it will be less stable when it propagates in a medium with a small signal-to-noise ratio or when the propagation distance is long. big impact

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