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td‑lte relay system and its synchronous signal extraction method and extraction device

A synchronization signal and relay system technology, applied in synchronization devices, baseband system components, wireless communication, etc., can solve problems such as inability to obtain synchronization signals

Inactive Publication Date: 2017-03-22
北京裕源大通科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The main purpose of the present invention is to provide a TD-LTE relay system and its synchronous signal extraction method and extraction device, to solve the problem that the TD-LTE relay system cannot obtain the synchronous signal through the existing power detection method in the prior art

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  • td‑lte relay system and its synchronous signal extraction method and extraction device

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0039] Embodiments of the TD-LTE relay system provided by the present invention will be described in detail below.

[0040] figure 2 is a block diagram of the TD-LTE relay system according to the first embodiment of the present invention, such as figure 2 As shown, the TD-LTE relay system includes a master unit A and a remote unit B. Wherein, the main unit A includes an uplink and downlink switching unit 20A, a signal processing unit 40A, a transmission processing unit 60A and a synchronization extraction unit 80A. The units and functions of the remote unit B and the main unit A are basically the same. The remote unit B includes an uplink and downlink switching unit 20B, ...

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Abstract

The invention discloses a TD-LTE relay system and a synchronizing signal extraction method and device thereof. The method comprises the steps that a downlink signal in the TD-LTE relay system is obtained, wherein the radio frame structure in the TDD type is adopted for the downlink signal; the power of the downlink signal is detected; according to the detected power, a first reference pilot signal of a first downlink subframe behind an uplink subframe in the downlink signal is determined; according to the first reference pilot signal, a synchronizing signal of the TD-LTE relay system is determined. The method is a new method for obtaining the synchronizing signal of the TD-LTE relay system through power detection.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a TD-LTE relay system and a synchronous signal extraction method and extraction device thereof. Background technique [0002] With the continuous development of Internet services and broadband services, users have higher and higher requirements for the access rate and quality of communication networks. The existing 3G and its enhancements based on CDMA (Code Division Multiple Access) Technology will not be able to meet the development needs of future business. Therefore, at the Quebec meeting in 2004, the 3GPP (3rdGeneration Partnership Project, ie, the 3rd Generation Partnership Project) decided to start research on the LTE (LongTerm Evolution, ie, long-term evolution) project of the 3G system. LTE is the mainstream next-generation mobile communication standard in the world following the third-generation mobile communication. TD-LTE is an LTE system in TDD (Time Division Dupl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04L25/02
Inventor 孙玉静杨建明于宏图李大庆
Owner 北京裕源大通科技股份有限公司