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Sync signal mapping method and device for relay link

A technology of synchronization signal and mapping method, which is applied in the directions of synchronization device, multiplexing communication, pilot signal distribution, etc., and can solve the problem of out-of-synchronization between the sending and receiving parties.

Inactive Publication Date: 2011-01-26
海宁市盐官工业投资有限公司
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Problems solved by technology

Considering the clock accuracy of both transceivers, there will be sampling deviation between the transceiver and the transceiver, which will cause the synchronization of both parties. If the RN works according to the eNode-B clock precision, the RN needs to perform synchronous tracking every 300ms; if the RN works according to the UE clock precision work, approximately every 5ms, RN needs to perform synchronous tracking

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  • Sync signal mapping method and device for relay link
  • Sync signal mapping method and device for relay link
  • Sync signal mapping method and device for relay link

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Embodiment Construction

[0075] Figure 4 It is a flowchart of the synchronization signal mapping method of the relay link of the present invention, such as Figure 4 As shown, including the following steps:

[0076] Step 400: Generate a synchronization sequence of the backhaul link between the base station and the relay node.

[0077] In this step, the method for generating the synchronization sequence of the link from the base station to the relay node is the same as or different from the method for generating the main synchronization sequence of the link from the base station to the terminal. Specifically:

[0078] When the synchronization sequence generation method of the base station to the relay node link is the same as the main synchronization sequence generation method of the base station to the terminal link, the specific implementation is: the synchronization signal is composed of the frequency domain Zadoff-Chu sequence, the root sequence of the Zadoff-Chu sequence Index u and correspond. among...

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Abstract

The invention provides a sync signal mapping method and a sync signal mapping device for a relay link. In the invention, a synchronizing sequence is generated, the mapping positions of sync signal in a frequency direction and a time direction are determined, and thus a specific sync signal mapping manner of a back haul link from a base station to a relay node is realized. The sync signal mapping method and device are well applied to the back haul link from the base station to the relay node, and the sync signal mapping manner is simple; therefore, backward compatibility (compatible with an LTE system) is ensured, and the problem that the relay node cannot correctly receive the primary sync signal (PSS) and the supplementary sync signal (SSS) transmitted from the base station is solved. In the method, a low cost is adopted and a normal completion of tracking by the relay node is ensured.

Description

Technical field [0001] The present invention relates to synchronization signal mapping technology, in particular to a synchronization signal mapping method and device of a relay link. Background technique [0002] The Long Term Evolution (LTE) system, the Long Term Evolution Advanced (LTE-A) system, and the International Mobile Telecommunication Advanced (IMT-Advanced) system all use orthogonal frequency A system based on Orthogonal Frequency Division Multiplexing (OFDM) technology is mainly a time-frequency two-dimensional data form in an OFDM system. figure 1 Is a schematic diagram of the relationship between resource blocks and subcarriers, such as figure 1 As shown, all the small squares represent a resource block, and the slash and shade represent sub-carriers. [0003] In the LTE system and the LTE-A system, the resource block (RB, Resource Block) is defined as the OFDM symbol in 1 consecutive slot in the time domain, and 12 or 24 consecutive subcarriers in the frequency doma...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04B7/14H04W56/00
CPCH04B7/2606H04W56/0085H04J11/0073H04J11/0076H04L5/0048
Inventor 毕峰梁枫杨瑾袁明吴栓栓袁弋非
Owner 海宁市盐官工业投资有限公司
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