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: 2012-06-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 changing the position where...

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Abstract

The invention discloses a method and a device for sending synchronous signal sequences, wherein the method comprises: respectively determining the Offset k which is the offset value of at least one sweep point corresponding to the center frequency of the carrier frequency and is relative to the center frequency on the scheduled direction, wherein the Offset k is an integer more than or equal to 0and less than 20; and a transmitting end determines the scheduled subcarriers on the opposite direction of the scheduled direction according to the offset value, and sends the synchronous signal sequences on the scheduled subcarrier. With the technical proposal of the invention, by changing the positions of the synchronous signal sequences sent by the transmitting end, the transmitting end can access any carrier frequency in the LTE-Advanced system, compared with the prior art, the method does not need to change the standard, not only can meet the requirement for upgrading the system, but also does not influence the performance of the receiving end.

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 Selective sensitivity, by introducing a cyclic prefix into the OFDM technology, further enhances the ability of the system to resist Inter-Symbol Interference (abbreviated as ISI). 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 syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04W56/00
Inventor 夏树强郁光辉梁春丽米德忠
Owner ZTE CORP
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