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Signal scrambling/descrambling method and device

A communication device and signal technology, which is applied in the field of communication, can solve the problem that the scrambling method is no longer applicable, and achieve the effect of randomizing interference and improving performance

Active Publication Date: 2018-10-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in order to support different services, different BWPs may adopt different frame structure parameters. Therefore, the above-mentioned signal scrambling method in the LTE communication system is no longer applicable to 5G NR

Method used

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  • Signal scrambling/descrambling method and device
  • Signal scrambling/descrambling method and device
  • Signal scrambling/descrambling method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Embodiment 1: Determine the initial value of the scrambling sequence according to the time unit number of the transmission signal

[0099] In 5G NR, a variety of frame structure parameters are supported. If the signals transmitted by different network devices use different frame structure parameters, the time unit numbers (such as slot numbers) corresponding to the frame structure parameters used by the transmitted signals may be different. For example, take the time unit number as the slot number in the subframe as an example for illustration, Figure 4 Among them, in the frame structure parameter of the subcarrier spacing configuration parameter u=0, the slot number in the subframe is 0; ...In the frame structure parameter of the subcarrier spacing configuration parameter u=1, the slot number in the subframe is 0~ 1; in the frame structure parameter of the subcarrier spacing configuration parameter u=2, the slot numbers in the subframe are 0-3. pass Figure 4 From t...

example 1

[0104] Example 1: According to the slot number in the radio frame Determine the initial value of the scrambling sequence

[0105] The scrambling sequence used to scramble the signal is usually related to the channel or signal type of the transmitted signal, for example, the physical downlink share channel (PDSCH) is related to the terminal identification, time slot number, cell identification and transmission single It is related to the number of codewords on the subframe. Physical multicast channel (physical multicastchannel, PMCH) and broadcast multicast service single frequency network (multimedia broadcast multicast services single frequency network, MBSFN) reference signal (reference signal, RS) scrambling, and time slot number and MBSFN identification related. Physical downlink control channel (physical downlink control channel, PDCCH), physical control format indicator channel (physical control format indicator channel, PCFICH), physical hybrid automatic repeat requ...

example 2

[0197] Example 2: According to the subframe number in the radio frame (n sf ) and the slot number in the subframe Determine the initial value of the scrambling sequence

[0198] In this embodiment of the application, the initial value of the scrambling sequence for the signal or channel sequence can be based on the subframe number (n sf ) and the slot number in the subframe Sure.

[0199] Further, optionally, other variables may also be combined to determine the initial value of the scrambling sequence, which is not specifically limited here.

[0200] In Example 2 of this application, the process of generating the initial value of the scrambling sequence used for PUSCH data channel scrambling is still used for illustration.

[0201] In this embodiment of the application, the network device can scramble the PUSCH data channel according to the terminal identifier, the codeword number, the slot number in the subframe, the subframe number in the radio frame, and the cell ide...

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PUM

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Abstract

The invention discloses a signal scrambling / descrambling method and device. In the signal scrambling method, a communication device scrambles a signal by adopting a scrambling sequence and then sendsthe scrambled signal; in the signal descrambling method, the communication device receives the signal and descrambles the signal by adopting the scrambling sequence. An initial value of the above scrambling sequence is determined according to a time unit serial number corresponding to a frame structure parameter adopted for the transmission of the signal, the scrambling sequences used for scrambling the transmission signals transmitted by adopting different frame structure parameters can be different, and the scrambling randomization of the scrambling signal can be realized, and the method issuitable for various application scenes in the 5G NR, and the performance is improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a signal scrambling and descrambling method and device. Background technique [0002] In order to ensure the reliability of communication, it is an important link to perform signal scrambling on the signal transmitted during the communication process. [0003] In a long term evolution (LTE) communication system, signal scrambling is usually performed according to parameters such as signal type, cell identity (identity, ID), terminal identity, and time slot (slot) number. The LTE communication system has a fixed frame structure parameter, and the subcarrier spacing, cyclic prefix (cyclic prefix, CP) length, symbol number, and slot number corresponding to the frame structure parameter are all fixed. However, in the fifth generation (5G) new wireless communication system (new radio, NR), under different subcarrier spacings, a system bandwidth can be divided i...

Claims

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Application Information

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IPC IPC(8): H04B7/024H04J11/00H04J13/10
CPCH04B7/024H04J11/0053H04J13/10H04L25/03866H04W72/0446H04W72/044H04L27/2626H04L27/26025H04L5/0094
Inventor 王婷李元杰唐浩唐臻飞
Owner HUAWEI TECH CO LTD
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