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Timing synchronization detection method and device

A technology of timing synchronization and detection method, which is applied in the field of communication and can solve the problems of a large amount of storage overhead and high power consumption.

Active Publication Date: 2021-01-15
UNISOC CHONGQING TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

Currently, pre-frequency offset correction is mainly used to reduce the impact of frequency offset on symbol timing synchronization. However, when the initial frequency offset of timing synchronization detection is large, multiple pre-frequency offset correction attempts are required.
In a weak signal scenario, accumulating the relevant power values ​​of the frequency offset branch to improve the detection success rate of timing synchronization requires a large amount of storage overhead, and the calculation of the relevant power value of the frequency offset branch consumes a lot of power consumption

Method used

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  • Timing synchronization detection method and device

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Embodiment Construction

[0026] Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

[0027] see figure 1 , figure 1 It is a schematic diagram of a wireless communication system proposed in the embodiment of this application. Such as figure 1 As shown, the wireless communication system may include network equipment and terminal equipment. Network devices can communicate with terminal devices through wireless communication. After the terminal device is turned on, it detects the PSS around several central frequency points where there may be cells. The PSS occupies 6 Physical Resource Blocks (Physical Resource Blocks, PRBs) in the central frequency band and repeats at a cycle of 5ms. By detecting the PSS terminal, the cell can be obtained. The ID of the cell in the group and the time slot boundary of 5 ms are determined at the same time. By detecting the PSS terminal, the length of the cyclic prefix of the cell and t...

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Abstract

The embodiment of the invention discloses a timing synchronization detection method and device, and the method comprises the steps: selecting a first temperature compensation curve which is an initialtemperature compensation curve of terminal equipment, and adjusting the first frequency of a first cell to a second frequency based on the first temperature compensation curve and a first temperature, wherein the first temperature is the current temperature of a crystal used by the terminal equipment; and carrying out main synchronization position detection based on the second frequency. The frequency of main synchronization position detection is adjusted through the temperature compensation curve, and the frequency offset correction frequency can be reduced, so that the memory overhead is reduced, and the power consumption is reduced.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a timing synchronization detection method and device. Background technique [0002] In the Long Term Evolution (LTE) system, the primary synchronization signal (Primary Synchronization Signal, PSS) is used for symbol timing synchronization, and the secondary synchronization signal (Secondary Synchronization Signal, SSS) is used for physical layer cell identification group The detection of the detection of the cyclic prefix (CyclicPrefix, CP) type, the detection of the 10ms wireless frame header, and the frequency offset estimation is performed by using the phase difference between the PSS signal and the SSS signal. Currently, pre-frequency offset correction is mainly used to reduce the impact of frequency offset on symbol timing synchronization. However, when the initial frequency offset of timing synchronization detection is large, multiple pre-frequency of...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04L27/26
CPCH04L27/0014H04L27/2662H04L2027/0026
Inventor 胡磊桂竟晶谭舒
Owner UNISOC CHONGQING TECH CO LTD
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