Digital same-frequency transshipment method and system based on time division multiple access

Abstract

The invention discloses a digital same-frequency transshipment method based on time division multiple access. The method comprises the following steps: the conversation time passing through a single frequency point is divided into at least one time slice T, and each time slice T is averagely divided into two time slots T1 and T2; a calling terminal compresses the speech data of the time slice T in the single frequency point into the speech compressed data to the time slot T1, and respectively sends the speech compressed data to transfer equipment and a called terminal through the time slot T2; the transfer equipment receives the speech compressed data of the calling terminal through the time slot T1 of the single frequency point, and transfers the speech compressed data to the called terminal with the time slot T2; the called terminal receives the speech compressed data sent by the called terminal through the time slot T1, receives the speech compressed data transferred by the transfer equipment with the time slot T2, and processes the data preferentially. The invention also provides a digital same-frequency transshipment system based on time division multiple access. The invention adopts digital time division technology to carry out digital same-frequency transshipment, thereby greatly improving the frequency utilization ratio.

Description

technical field [0001] The invention relates to the field of radio communication, in particular to a digital co-frequency transfer method and system based on TDMA (Time Division Multiple Access, Time Division Multiple Access). Background technique [0002] Existing radio communication technologies such as walkie-talkies, vehicle-mounted radios or ship-borne radios all use proprietary networks for signal transmission, and their frequency resources are very precious and limited. In addition, the existing radio terminals such as walkie-talkies, vehicle-mounted radio stations or ship-borne radio stations are still dominated by analog technology, and only a small number of digital radio terminals are in use. For analog radio terminals, a pair of 25K frequencies is required for the relay equipment to complete the process of receiving and sending information, which occupies too many frequencies. [0003] In summary, the existing radio communication transfer technology obviously ha...

AI Technical Summary

Problems solved by technology

[0002] Existing radio communication technologies such as walkie-talkies, vehicle-mounted radios or ship-borne radios all use proprietary networks for signal transmission, and their frequency resources are very precious and limited

In addition, the existing radio terminals such as walkie-talkies, vehicle radios or ship radios are still dominated by analog technology, and only a small number of digital radio terminals are in use

For analog radio terminals, a pair of 25K frequencies is required for the relay equipment to complete the process of receiving and sending information, which occupies too many frequencies.

[0003] In summary, the existing radio communication transfer technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

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