Scrambling method of downlink channel

A channel and control channel technology, applied in the field of downlink channel scrambling, can solve problems such as scrambling methods for wireless communication systems that have not yet been proposed, and achieve the effect of reducing the peak-to-average ratio

Inactive Publication Date: 2015-11-04
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0014] It can be seen that a scrambling method suitable for wireless communication systems with carrier aggregation characteristics has not yet been proposed

Method used

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  • Scrambling method of downlink channel
  • Scrambling method of downlink channel
  • Scrambling method of downlink channel

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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The core idea of ​​the present invention is: when scrambling codes are generated on the downlink channel, frequency point index values ​​are introduced, and different scrambling code sequence initialization values ​​are set for different frequency points to generate different scrambling code sequences, so that time points on multiple frequency points Domain data is randomized to achieve the purpose of reducing the peak-to-average ratio.

[0026] image 3 It is a schematic flow chart of Embodiment 1 of the present invention, such as image 3 As shown, this embodiment mainly includes:

[0027] Step 301: In a wireless communication system with carrier aggregation characteristics, for a downlink channel that currently needs to transm...

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Abstract

The invention discloses a scrambling method of a downlink channel. The method comprises the following steps of in a wireless communication system possessing a carrier wave aggregation characteristic, for the current downlink channel needing to carry out data sending, using an index value of a frequency point occupied by the downlink channel and an identification of a cell to generate an initial value cinit of a scrambling code sequence; using the initial value cinit to generate a corresponding scrambling code sequence; using the scrambling code sequence to carry out scrambling on data of the downlink channel. By using the method, a problem of a high peak-to-average ratio in the wireless communication system possessing the carrier wave aggregation characteristic can be effectively solved.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a downlink channel scrambling method. Background technique [0002] In the digital transmission system, the scrambling code can make the system transparent to various digital information, that is, to randomize the binary digital information, so that the signal spectrum can be diffused and kept stable. In the 3GPP Long Term Evolution (LTE) system, a scrambling code is designed for each physical channel, and the characteristics of the scrambling code are used to reduce the mutual interference of signals between cells. Taking the physical downlink control channel (PDCCH) as an example, in each subframe, the downlink control information (DCI) is coded according to table 5.1.3-1 of the 3GPP protocol version 36.212860, and the coded bit block will be according to figure 1 Send processing as shown. [0003] Blocks of bits transmitted on multiple PDCCH channels in a subframe will be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L5/00
Inventor 王丽
Owner POTEVIO INFORMATION TECH CO LTD
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