Wireless interphone signal transmission method based on transfer platform

Abstract

The invention discloses a wireless interphone signal transmission method based on a transfer platform, which comprises the following steps: (1) transmission is carried out with a burst frame as a base unit, wherein each burst frame occupies one carrier frequency; (2) a transmitting terminal transmits signals to the transfer platform and a receiving terminal at the time slot Slot1 of the carrier frequency, and simultaneously the receiving terminal receives the signal directly transmitted by the transmitting terminal; (3) the transfer platform receives signals at the time slot Slot2 of the carrier frequency and forwards the signals at the time slot Slot1 of the carrier frequency; (4) the receiving terminal receives the signals forwarded by the transfer platform at the time slot Slot2 of the carrier frequency and carries out preferential processing on the signals received at the time slot Slot1 and the time slot Slot2, so that a transmission cycle is completed after processing; and (5) next burst frame is started to transmit, and the step (2) is performed until all the signals are transmitted. Through the adoption of the method, the communication distance can be increased, the coverage range is expanded, the communication blind spots are reduced, and co-frequency forwarded signal transmission can be realized.

Description

technical field [0001] The invention relates to a signal transmission method, in particular to a repeater-based wireless walkie-talkie signal transmission method. It belongs to the technical field of wireless communication. Background technique [0002] With the rapid development of information technology, human society has entered a flourishing information age, and wireless communication is widely used in modern society, especially the communication technology of wireless walkie-talkies, which can be used in mobile one-to-many It is a terminal device for communication at one point, so that multiple people can communicate with each other and hear the same person at the same time. Therefore, it has been widely used in various fields such as transportation, transportation, construction, property, security, and government agencies. [0003] However, in wireless walkie-talkies, air interface protocol standards such as DMR, DPMR, and PPT are usually used for signal transmission....

AI Technical Summary

Problems solved by technology

[0003] However, in wireless walkie-talkies, air interface protocol standards such as DMR, DPMR, and PPT are usually used for signal transmission. There are often communication blind spots in the use process, and automatic call forwarding cannot be realized. The radio capability is limited, which leads to the limitation of the communication distance, and it cannot meet the forwarding function of the walkie-talkie well.

Therefore, the digital walkie-talkies on the market now start to use repeaters for forwarding, but they can only achieve inter-frequency forwarding, resulting in the need for repeaters to occupy too many frequencies

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