Multi-link portable communication device and voice coding compression and decoding method thereof

Abstract

The invention discloses a multi-link portable communication device and a voice coding compression and decoding method thereof. The invention comprises a shell, a circuit board is arranged in the shell, and an ARM main controller, a power management module, a 4G / 5G communication module, a Tiantong satellite communication module and a Beidou satellite communication module are installed in the shelland fixed to a first grounding end, a second grounding end and a third grounding end of the circuit board respectively. The beneficial effects are that the invention achieves the link fusion of a plurality of communication modes, can achieve the data exchange through a Tiantong satellite, a Beidou satellite and a ground 4G / 5G network, can achieve the Beidou short message communication even under an extreme environment condition, and meets the communication demands in a desert environment without a mobile wireless network; meanwhile, a lithium battery and various intelligent terminals can be charged through a hand-operated power generation handle, and the problem that charging cannot be conducted outdoors is solved; and an emergency help-seeking key is also arranged, and geographic position information, help-seeking signals and the like are simultaneously sent through multiple links, so that the personal safety of the user is guaranteed.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a satellite-ground integrated and multi-link communication portable communication device and a voice coding compression and decoding method thereof. Background technique [0002] Due to various deficiencies in the existing portable communication devices, that is, portable Wi-Fi communication products, they generally use mobile wireless networks connected to mobile operators, and the mobile wireless networks need effective coverage areas of ground base stations to access enter. In special geographical environments such as deserts, snow-capped mountains, and islands, or in areas that do not have the conditions for ground base station construction, the existing portable communication devices cannot access mobile wireless networks, and cannot communicate with the outside world when they need help in an emergency. [0003] However, my country's Tiantong satellite and Beidou sat...

AI Technical Summary

Problems solved by technology

In special geographical environments such as deserts, snow-capped mountains, and islands, or in areas that do not have the conditions for ground base station construction, the existing portable communication devices cannot access the mobile wireless network, and cannot communicate with the outside world when emergency situations are needed.

[0003] However, my country's Tiantong satellite and Beidou satellite have wide and stable signal coverage, and completely cover the territory of our country. The Beidou satellite's signal covers the whole world. At present, the most advanced mobile wireless network 4G / 5G communication technology is integrated, resulting in the existing portable communication device not having the ability to communicate with Beidou satellite and Tiantong satellite, and unable to send emergency help information in parallel in the form of multiple links

[0004] In addition, the problem of charging portable communication devices in the wild also needs to be solved urgently, especially in special environments such as deserts, snow-capped mountains, and islands. In the absence of mains power, when the power of the portable communication device is exhausted, it is impossible to communicate with the outside world.

[0005] Furthermore, since Beidou satellite communications are sent in the form of short messages, which are limited to a maximum of 120 Chinese characters or 1680 bits per message, and the highest sending frequency is once a second, voice messages with a traditional code rate of more than 8 kbit per second are not conducive to It is sent in the form of short messages. At the same time, it is necessary to consider the time delay problem that cannot be resolved due to the inconsistency of the arrival order of data packets in Beidou satellite communication. Once the analysis error may cause major losses

Images