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A method of scrambling code allocation based on 4G

A code allocation, 4G technology, applied in the field of scrambling code allocation based on 4G, can solve the problems affecting the communication speed and stability of digital communication, affecting the identification rate of PCI, and the same frequency interference of adjacent cells

Active Publication Date: 2021-09-14
BEIJING TENGINEER AIOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the number of PCIs has increased compared to the number of available frequencies of TD-SCDMA, and the frequencies of different PCIs are different, it is inevitable that there will be co-frequency interference in adjacent cells. Generally, specific allocation rules are used to distinguish them, which will affect the distinction of PCIs. Recognition rate directly affects the communication rate and stability of digital communication

Method used

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  • A method of scrambling code allocation based on 4G
  • A method of scrambling code allocation based on 4G
  • A method of scrambling code allocation based on 4G

Examples

Experimental program
Comparison scheme
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Embodiment

[0061] Such as figure 1 , figure 2 As shown, a method for allocating scrambling codes based on 4G includes the following steps:

[0062] Select the initial cell A to be allocated according to the PCI allocation coefficient 1 , and determine the initial assignment to cell A 1 The scrambling code to be allocated;

[0063] To initially allocate cell A 1 as the center, determine its neighbor cell B 1 , B 2 and B 3 Assign scrambling codes to the cells to be allocated, where B 1 , B 2 and B 3 The number of their respective neighboring cells decreases in turn; and then respectively determine cell B 1 , B 2 and B 3 The adjacent cells C, D, and E are the cells to be allocated and the scrambling codes are allocated;

[0064] When allocating scrambling codes, arrange and combine the compiled scrambling codes with the cells to be allocated to obtain an allocation scheme, and the encoding format of each allocation scheme is: (a 0 ,a 1 ,a 2 ,...,a M-1 ), where M represents...

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Abstract

The invention relates to the technical field of data information processing, in particular to a 4G-based scrambling code allocation method. The present invention firstly determines the initial allocation cell from the PCI, and then sequentially determines the adjacent cells of the initial allocation cell, and the adjacent cells of the initial allocation cell, and performs allocation sorting on each cell, and the logic is clearer when allocating scrambling codes , to avoid confusion; at the same time, arrange and combine the scrambling codes with multiple cells to be allocated and perform iterative processing, and finally obtain several allocation schemes. From these allocation schemes, individuals with low selection probabilities are screened out, and individuals with high selection probabilities are retained. Individual, in the final application, can reduce the interference between adjacent cells, avoid unnecessary errors in decoding, and improve the effectiveness and stability of data transmission in the communication process.

Description

technical field [0001] The invention relates to the technical field of data information processing, in particular to a 4G-based scrambling code allocation method. Background technique [0002] The scrambling code is to multiply the spread spectrum with a pseudo-random code to encrypt the signal. The function of physical channel scrambling in the uplink is to distinguish users, and the function of scrambling in the downlink can distinguish cells and channels. [0003] Scrambling technology has been widely used in 3G (3rd-Generation) technology, and channel code and scrambling code are used in WCDMA (Wideband Code Division Multiple Access) to reduce multi-user interference , WCDMA uplink uses scrambling codes to distinguish different users in the same cell, and uses channelization codes to distinguish them. For physical data channels and control channels, channelization codes are used in downlink to distinguish different users in the same cell, and scrambling codes are used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/16
CPCH04J13/16
Inventor 杨虎岳
Owner BEIJING TENGINEER AIOT TECH CO LTD