Coding and decoding method of wireless digital signalling

Abstract

The method includes steps: (1) obtaining 4 bits category code, and 4 bits function code of communication function from definition list of category and functional parameters defined in advance; obtaining personal 16 bits ID and 4 bits region code of first wireless terminal from storage of first wireless terminal so as to form 48 bits of signaling data block; (2) using CRC production defined by CRC-ITU-T to calculate the said check code, and attaching the generated 16 bits check code to the back of the signaling data block; (3) using method of data error correction coding encodes new generated 64 bits data to generate 128 bits data; (4) using 8x16 matrix interlaces 128 bits coded data so as to generate new 128 bits data; (5) attaching link sync code, sendreceive sync code and frame sync code to the head part of new 128 bits coded data; (6) sending it to modulator of first wireless terminal and transmitting it out. Features are: easy of encoding and decoding, larger capacity etc.

Description

technical field [0001] The invention relates to a wireless digital signaling, in particular to a method for encoding and decoding the wireless digital signaling. Background technique [0002] A conventional analog wireless communication system is generally composed of a system management terminal, a system control center, a repeater station, and a wireless terminal (which can be a handheld device, a vehicle-mounted station, a fixed station, etc.), and the wireless terminals transmit information to each other through the air, thereby realizing terminal Control, voice transmission, data transmission and other services. In conventional analog wireless communication systems, most of the system control uses analog signaling, such as 2-tone, 5-tone, DTMF, etc., limited by the signaling coding capacity and time, this system can only provide simple function. Some conventional analog wireless communication systems use digital signaling for control, but some digital signaling system...

AI Technical Summary

Problems solved by technology

Some conventional analog wireless communication systems use digital signaling for control, but some digital signaling systems have problems such as few support functions, long response time for some functions, weak scalability, and high hardware platform requirements. For example, patent No. 4,517,561, the U.S. Publication patent document with the invention title "Selective call, paging and priority signaling system", the patent No. 4,590,473, the U.S. publication patent document with the invention title "Data signaling system", the patent No. 4,517,669, the invention title is " "Method and apparatus for coding messages communicated between a primarystation and remote stations of a data communications system" The signaling described in the US patent publication does not support the transmission of a large amount of data, and some common functions require multi-frame combinations to complete, so the extension The connection time is shortened, and the decoding speed is slow under the common hardware platform environment, etc.

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