A digital walkie-talkie and its adaptive relay method

Abstract

The invention discloses a digital walkie-talkie and an adaptive relay method thereof. The method includes: sending the walkie-talkie to start push-to-talk communication, compressing the intercom audio data by time slices and segments to form a message and sending it, wherein the The message includes parameters: session identifier SessionID, message sequence number Sequence and retransmission count ReTxCount; the receiving intercom in the same group reads the message, and at the same time obtains the signal strength RSc when receiving the message, and obtains the SessionID in the message, according to SessionID is judged. When the SessionID in the message is different from the current SessionID, the Sequence record is cleared; the Sequence in the message is obtained, and compared with the Sequence in the Sequence record. If the Sequence is not in the Sequence record, perform: relay detection And relay forwarding; extract the audio data in the message and decode the output; add the Sequence to the Sequence record. This method does not require an independent intercom relay device to participate in the relay, and can effectively suppress data flooding.

Description

technical field [0001] The invention relates to the field of walkie-talkie communication, in particular to a digital walkie-talkie and an adaptive relay method thereof. Background technique [0002] The analog walkie-talkie usually adopts the FM modulation method. The coverage of the walkie-talkie is directly related to the wireless signal transmission power and wireless signal receiving sensitivity of the whole machine. The higher the transmission power, the wider the coverage and the higher the receiving sensitivity. It is necessary to deploy relay stations to enhance coverage, so in actual use, enhanced coverage equipment, as well as equipment deployment and maintenance will bring about a huge increase in cost. [0003] The signals received and sent by the digital walkie-talkie are all digital signals, and the digital signals can be easily stored and copied. The digital walkie-talkie adopts the digital modulation method. The voice signal is sampled by the ADC to obtain P...

AI Technical Summary

Problems solved by technology

[0002] Analog walkie-talkies usually adopt FM modulation. The coverage of the walkie-talkie is directly related to the wireless signal transmission power and wireless signal receiving sensitivity of the whole machine. The greater the transmission power, the wider the coverage, and the higher the receiving sensitivity, the wider the coverage; Relay stations need to be deployed to enhance coverage, so in actual use, enhanced coverage equipment, equipment deployment, and maintenance will bring about a huge increase in cost

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