Synchronous signal sequence sending method and device

A technology for synchronizing signals and sending methods, which is applied in the field of communication, can solve problems such as complex implementation methods, and achieve the effect of meeting the needs of upgrades

Inactive Publication Date: 2013-05-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Considering the problem that the receiver can access any carrier frequency of the LTE-Advanced system in the related art, the implementation method is complicated and the present invention is proposed. Therefore, the main purpose of the present invention is to provide a method for sending a synchronization signal sequence and devices to solve the above problems

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  • Synchronous signal sequence sending method and device
  • Synchronous signal sequence sending method and device
  • Synchronous signal sequence sending method and device

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Embodiment Construction

[0023] Functional Overview

[0024] Since the transmitting end only sends the synchronization signal sequence to the receiving end on the center frequency of each carrier frequency, the receiving end only receives the synchronization signal sequence centered on the frequency sweep point. If the center frequency of a certain carrier frequency is not on the frequency sweep point, Then the receiving end cannot receive the synchronization signal sequence sent by the transmitting end. According to existing standards and methods, if the carrier frequency of the receiving end is greater than 20MHz, it cannot be guaranteed that the center frequency of each carrier frequency of the receiving end is on the frequency sweep point, which will cause the receiving end to fail to correctly receive the synchronization signal sequence sent by the transmitting end. Based on this, the main idea of ​​the present invention is: without modifying the existing standards, by cyclically shifting the sy...

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Abstract

A method and device for transmitting a synchronous signal sequence are disclosed in the present invention. Wherein, the method includes the steps of: for each carrier frequency, respectively determining an offset value of at least a sweep point corresponding to a center frequency of the carrier frequency in a predetermined direction relative to the center frequency; shifting the synchronous signal sequence according to the offset value, moving at least one of data located in the end of the opposite direction of the predetermined direction to the end of the predetermined direction of the synchronous signal sequence, in order to align the ends of the synchronous signal sequence after shifting and the synchronous signal sequence before shifting; transmitting the synchronous signal sequence after shifting. With the technical solution of the present invention, by circularly shifting the synchronous signal sequence sent by a transmitting terminal, a receiving terminal can access any carrier frequency of a LTE-Advanced system. Relative to the prior art, the method does not need to change the standard, thus not only meets the needs of the system upgrades, but also does not affect the performance of the receiving terminal.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for sending a synchronization signal sequence. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is a technology that converts a high-speed transmission data stream into a set of low-speed parallel transmission data streams, which can greatly reduce the system's response to multipath fading channel frequency The selectivity sensitivity further enhances the ability of the system to resist Inter-Symbol Interference (ISI for short) by introducing a cyclic prefix into the OFDM technology. In addition, OFDM technology also has the characteristics of high bandwidth utilization rate and simple implementation, which makes OFDM technology widely used in the field of wireless communication. For example, a WLAN system, a Long Term Evolution (LTE for short) system based on Orthogonal Frequency Division Multiple Access, an ITU-Advanced syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2613
Inventor 夏树强郁光辉梁春丽米德忠
Owner ZTE CORP
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