Scrambling code sequence generation method, device and system for scrambling or descrambling

A scrambling code sequence generation and scrambling sequence technology, applied in the field of communication, can solve the problems of slow scrambling or descrambling processing speed of wireless communication system, complicated generation process, waste of system resources, etc., so as to shorten the generation time and simplify the generation process. , the effect of saving system resources

Active Publication Date: 2010-12-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: the scrambling code sequence generation pro

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  • Scrambling code sequence generation method, device and system for scrambling or descrambling
  • Scrambling code sequence generation method, device and system for scrambling or descrambling
  • Scrambling code sequence generation method, device and system for scrambling or descrambling

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Embodiment Construction

[0023] The technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] figure 1 A flowchart of a method for generating a scrambling code sequence for scrambling or descrambling provided by an embodiment of the present invention, as shown in figure 1 As shown, the method includes:

[0025] 101. Acquire an initial sequence of a first pseudo-random sequence;

[0026] Scrambling refers to adding a scrambling sequence to the transmission sequence at the sending end of the transmission data, thereby changing the characteristics of the transmitted data, making the content of the original transmission stream difficult to predict, and thus achieving the protection of the original transmission data.

[0027] According to the formula c(n)=(x 1 (n+N c )+x 2 (n+N c ))mod2, the scrambling code sequence c(n) for scrambling or descrambling consists of the first pseudo-random sequence x ...

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Abstract

The embodiment of the invention provides a scrambling code sequence generation method, a device and a system for scrambling or descrambling. The method comprises the following steps: obtaining the initial sequence of a first pseudo-random sequence; obtaining a self-scrambled sequence of a second pseudo-random sequence after self-scrambling the initial sequence of the second pseudo-random sequence, multiplying the initial sequence of the first pseudo-random sequence with a preset M matrix, and generating the self-scrambled sequence of the first pseudo-random sequence; and carrying out XOR operation on the self-scrambled sequence of the first pseudo-random sequence and the self-scrambled sequence of the second pseudo-random sequence according to bits and obtaining a scrambling code sequencefor scrambling or descrambling. The embodiment can simplify the generation process of the scrambling code sequence, shorten the generation time of the scrambling code sequence, further shorten the time for scrambling or descrambling transmitted data, accelerate the scrambling or descrambling processing speed of a wireless communication system and save system resources.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a method, device and system for generating a scrambling code sequence for scrambling or descrambling. Background technique [0002] With the development of science and technology, wireless communication technology has been widely used, and users can obtain effective information brought by wireless communication systems at any place and any time. However, if no security protection measures are taken for the transmission data in the wireless communication system, the third party can easily obtain the data information received by the current user. Therefore, effective protection of the transmission data is a prerequisite for wireless communication applications. How to protect the transmission Effective data protection is extremely important. One way is to use scrambling technology to protect the transmission data at the sending end, and descramble...

Claims

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Application Information

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IPC IPC(8): H04W12/02
Inventor 徐新余
Owner HUAWEI TECH CO LTD
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