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Terminal positioning method and equipment

A terminal positioning and terminal technology, applied in the field of communications, can solve problems such as large resource requirements

Inactive Publication Date: 2013-10-02
HUAWEI TECH CO LTD
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Problems solved by technology

[0003] However, since a PRS subframe includes multiple OFDM (Orthogonal Frequency Division Multiplex, Orthogonal Frequency Division Multiplex) symbols, and not all OFDM symbols include PRS, in addition, for a PRS subframe, for example: corresponding to 20M bandwidth PRS, the data volume of the subframe has 30720 complex sampling points, therefore, the time-domain sliding correlation processing of the generated local sequence and the corresponding received signal has a large demand for hardware and software resources

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  • Terminal positioning method and equipment

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Embodiment Construction

[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0071] An embodiment of the present invention provides a terminal positioning method, such as figure 1 As shown, the execution subject of this method is the terminal, including:

[0072] S101. The terminal performs segmentation processing on the local sequence corresponding to the subframe of the PRS to obtain a segmented local sequence.

[0073] Wherein, the start OFDM symbol and the end OFDM symbol of each segmented local sequence contain the PRS, and the s...

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Abstract

The embodiment of the invention provides a terminal positioning method and terminal positioning equipment, relates to the field of communication, and aims to reduce resource demand on software and hardware in the terminal positioning process. The terminal positioning method comprises the following steps: segmenting a local sequence corresponding to a subframe of a positioning reference signal (PRS) by a terminal to obtain a segmented local sequence, wherein a starting orthogonal frequency division multiplexing (OFDM) symbol and a finishing OFDM symbol of each segment of the segmented local sequence contain the PRS and the segments of the segmented local sequence are separated by OFDMs which do not contain the PRS; respectively obtaining sub-correlation values of the segmented local sequence and a corresponding received signal in a search window; superposing the sub-correlation values to obtain a correlation value of the local sequence and the corresponding received signal; according to the correlation value, obtaining a reference signal time difference (RSTD), and sending the RSTD to network side equipment so as to position the terminal by the network side equipment according to the RSTD. The terminal positioning method and the terminal positioning equipment are used for positioning the terminal.

Description

technical field [0001] The present invention relates to the communication field, in particular to a terminal positioning method and equipment. Background technique [0002] Terminal positioning technology provides more and more convenience for people's life. In the existing LTE (Long Term Evolution, long-term evolution), PRS (Position Reference Signal; positioning reference signal) is adopted to realize OTDOA (Observed Time Difference of Arrival) , arrival time difference) positioning technology, specifically, the terminal needs to measure the RSTD (Reference Signal Time Difference, reference signal time difference) of the PRS (that is, the difference between the subframe arrival time of the neighbor base station PRS and the subframe arrival time of the serving base station PRS ) and report to the network side device, and the network side device locates the terminal location according to the RSTD reported by the terminal. Among them, the terminal needs to measure the subfra...

Claims

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Application Information

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IPC IPC(8): H04W64/00
Inventor 刘劲楠
Owner HUAWEI TECH CO LTD
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