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TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization method, device, system, apparatus and storage medium

A technology of primary synchronization signal and secondary synchronization signal, applied in the directions of synchronization devices, electrical components, wireless communication, etc., can solve the problem of poor quality of the primary synchronization signal sequence, and achieve the convenience of time domain synchronization, minimum distance increase, and improved reception quality. Effect

Inactive Publication Date: 2019-01-04
BEIJING XINWEI TELECOM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a TDD-LTE synchronization method, device, system, equipment and storage medium to solve the problem of poor quality of the main synchronization signal sequence received by the terminal in the prior art

Method used

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  • TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization method, device, system, apparatus and storage medium
  • TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization method, device, system, apparatus and storage medium
  • TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization method, device, system, apparatus and storage medium

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Embodiment 1

[0051] figure 1 It is a flow chart of the TDD-LTE synchronization method provided by Embodiment 1 of the present invention. This embodiment can be applied to determine the primary synchronization signal corresponding to different physical cells by configuring the range of time domain positions that the primary synchronization signal sequence can occupy on the base station side. In the case of the position in the time domain of the sequence mapping, the method can be executed by a TDD-LTE synchronization device, which can be implemented in software and / or hardware, and is generally integrated in a base station.

[0052] The method of Embodiment 1 of the present invention specifically includes:

[0053] S101. Preset the number of symbols that the primary synchronization signal sequence can occupy in the time domain position range in the special subframe, obtain the difference between the number of symbols occupied by the preset downlink time slot and the number of reserved symbo...

Embodiment 2

[0064] figure 2 The flow chart of the TDD-LTE synchronization method provided by Embodiment 2 of the present invention. Embodiment 2 of the present invention is optimized on the basis of Embodiment 1. Specifically, the range of positions in the time domain that can be occupied by the preset primary synchronization signal sequence in symbols The number of symbols, obtain the difference between the number of symbols occupied by the preset downlink time slot in a time slot and the number of reserved symbols, and compare the number of symbols of the occupied time domain position range with the difference For further optimization of the operation before comparison, such as figure 2 As shown, the second embodiment of the present invention specifically includes:

[0065] S201. Obtain a physical cell identification number of a physical cell.

[0066] Specifically, in the TDD-LTE system, the physical layer distinguishes different physical cells by the physical cell identification n...

Embodiment 3

[0076] image 3 A flow chart of a TDD-LTE synchronization method provided by Embodiment 3 of the present invention. Embodiment 3 of the present invention is optimized and improved on the basis of the above-mentioned embodiments. If the number of symbols that can occupy the time domain position range is less than or equal to the difference, then according to the first calculation standard, determine the time domain position of the primary synchronization signal sequence mapping corresponding to the transmitting physical cell. image 3 As shown, the method of the third embodiment of the present invention specifically includes:

[0077] S301. Preset the number of symbols that the primary synchronization signal sequence can occupy in the time domain position range in the special subframe, obtain the difference between the number of symbols occupied by the preset downlink time slot and the number of reserved symbols, and store the The number of symbols that can occupy the position...

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Abstract

The embodiments of the invention disclose a TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization method, a TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization device, a TDD-LTE (Time Division Duplexing-Long Term Evolution) synchronization system, an apparatus and a storage medium. The method includes the following steps that: under a condition that the number ofsymbols in a preset occupiable time-domain location range is smaller than or equal to the difference value of the preset number of symbols occupied by downlink time slots and the number of reserved symbols, if the number of the symbols is smaller than or equal to the difference value of the number of symbols included in one time slot and the number of the reserved symbols, the time-domain locationof a primary synchronization signal sequence mapping corresponding to a transmitting physical cell is determined; if the number of the symbols is greater than the difference value, the time-domain location of a primary synchronization signal sequence mapping corresponding to the transmitting physical cell is determined according to the result of comparison between the calculation result of a first calculation standard and a threshold; and the time-domain resource and frequency-domain resource of a primary synchronization signal sequence and a secondary synchronization signal sequence corresponding to the transmitting physical cell are determined. With the method, device, system, apparatus and storage medium provided by the embodiments of the present invention adopted, more primary synchronization signal physical resources can be provided, and the receiving quality of the primary synchronization signal sequence can be improved.

Description

technical field [0001] Embodiments of the present invention relate to wireless communication technologies, and in particular to a TDD-LTE synchronization method, device, system, equipment, and storage medium. Background technique [0002] In the Time Division Duplexing-Long Term Evolution (TDD-LTE) system in time division duplex mode, a 10ms radio frame (radio frame) is divided into 10 subframes (subframe) with a length of 1ms, and the subframe Frames are used to configure uplink and downlink resources. In order to realize the downlink synchronization of the TDD-LTE system, the system maps the primary synchronization signal sequence (Primary Synchronization Signal, PSS for short) and the secondary synchronization signal sequence (Secondary Synchronization Signal, SSS for short) respectively on the downlink channel, wherein the primary synchronization signal sequence is Mapped to the third Orthogonal Frequency Division Multiplexing (OFDM) symbol of the 1st subframe and the 6...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/001
Inventor 田涛
Owner BEIJING XINWEI TELECOM TECH
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