A Method for Identifying Parity and Even Numbers of Decimal Numbers Used in Communication Systems

Abstract

The invention provides an odd-even number recognition method for decimal numbers of a number for a communication system. The odd-even number of decimal numbers of a BCD Number expressed number is recognized via the range of a BCD code of the last 4bit of a BCD Number TLV Value; a communication sender sets the last 4bit of the TLV Value as a BCD code of a different range according to the odd-even number of decimal numbers of a communication number during coding, which is used for identifying that the BCD code is the number of a normal decimal number or an end mark; and a communication receiver judges the range of the BCD code of the last 4bit of the TLV Value during decoding. The method improved on the basis of the original BCD Number TLV coding framework realizes framework reuse, is good in compatibility and simple to implement, does not increase additional bytes and bits, sufficiently utilizes the communication bandwidth, and is wide in application.

Description

technical field [0001] The invention belongs to the field of communication, and relates to a method for identifying odd and even numbers of decimal numbers used in a communication system. Background technique [0002] An important feature of communication is that both parties need to exchange data in an agreed encoding method. TLV encoding is a commonly used encoding method. TLV is the abbreviation of Type, Length, and Value. Type uniquely identifies the type of data unit, Length identifies the number of bytes occupied by the Value field of subsequent data units, and Value is the content of the data unit itself. When communicating, the sender sends the required data unit in TLV encoding; when receiving, the receiver first decodes the data unit type according to the Type field, and then decodes the content of the corresponding data unit according to the Length and Value fields. [0003] The so-called BCD code is that each decimal number is represented by a four-digit binary ...

AI Technical Summary

Problems solved by technology

[0017] And if the number represented by the current BCD Number (such as figure 1 ) If this method is still used to implement encoding, one byte is wasted in the scenario where the number of decimal digits is even, and the TLV encoding framework of the original BCD Number needs to be changed

This implementation method not only increases additional manpower and material resources, but also wastes communication bandwidth and reduces efficiency

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