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Method for sending synchronous signal sequence

A technology of synchronous signal and sending method, which is applied in the direction of synchronous devices, wireless communication, electrical components, etc., can solve the problem of peak-to-average ratio and achieve the effect of avoiding the problem of peak-to-average ratio

Inactive Publication Date: 2016-02-03
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

If each frequency point of this type of private network wireless communication system adopts the TD-LTE synchronization signal generation method, then before IFFT conversion, multiple frequency points will generate the same frequency domain signal (f 1 ,f 2 ... f N ), then after IFFT, filter filtering, and modulation to their respective carrier frequencies, when signals of multiple carrier frequencies are superimposed, if the phases of multiple signals are consistent, the instantaneous power of the superimposed signal obtained will be much higher than The average power of the signal, which can cause high peak-to-average ratio (PAPR) problems

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  • Method for sending synchronous signal sequence
  • Method for sending synchronous signal sequence

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The core idea of ​​the present invention is: when generating the primary synchronization signal sequence and secondary synchronization signal sequence of each common frequency point, the absolute frequency point index number is considered, so that the synchronization signal sequences of different common frequency points are different, so as to avoid the same synchronization signal The peak-to-average ratio problem caused by superposition.

[0019] figure 2 It is a schematic flow chart of Embodiment 1 of the present invention, such as figure 2 As shown, the sending method of the synchronization signal sequence realized in this embodiment mainly includes:

[0020] Step 201, for each common frequency point in the synchronization f...

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Abstract

The invention discloses a method for sending a synchronous signal sequence. The method comprises the following steps: for each ordinary frequency point in a synchronous frame, generating a primary synchronous signal sequence and a secondary synchronous signal sequence occupying the ordinary frequency point according to an absolute frequency point index number and a cell identifier of the ordinary frequency point; mapping the primary synchronous signal sequence onto a primary synchronous time-frequency resource corresponding to the ordinary frequency point in the synchronous frame; mapping the secondary synchronous signal sequence onto a secondary synchronous time-frequency resource corresponding to the ordinary frequency point in the synchronous frame; and for each ordinary frequency point, generating a time domain continuous signal of the ordinary frequency point transmitted by corresponding OFDM symbols in the synchronous frame on a single antenna port by means of sequence symbols mapped onto the synchronous time-frequency resources, and carrying out corresponding transmission. The method disclosed by the invention can be used for effectively avoiding the problem of a high peak-to-average ratio due to superposition of synchronous signals, and is suitable for private network wireless communication systems with carrier aggregation characteristics.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method for sending a synchronous signal sequence. Background technique [0002] The synchronization of the TD-LTE system adopts two specially designed physical signals, which are broadcast in each cell, and they are respectively the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS). The detection of these two signals not only synchronizes the time and frequency, but also provides the UE physical layer cell identity and cyclic prefix length, and informs the UE whether the cell is using Frequency Division Duplex (FDD) or Time Division Duplex (TDD). [0003] In a TDD cell, regardless of the system bandwidth, the time domain and frequency domain positions of the PSS and SSS are fixed, and the PSS is located in the middle 72 subcarriers of the third Orthogonal Frequency Division Multiplexing (OFDM) symbol of time slot 2 and time slot 12. , the SSS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W72/04H04L27/26
Inventor 王丽
Owner POTEVIO INFORMATION TECH CO LTD
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