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Positioning signal search window configuration in wireless communication system

A positioning signal and search window technology, applied in wireless communication, radio transmission system, radio wave measurement system, etc., can solve problems such as error, positioning measurement aliasing, etc.

Pending Publication Date: 2022-02-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Positioning measurements can be prone to errors due to aliasing, sidelobes, and other error sources, especially if the signal is in the higher frequency spectrum

Method used

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  • Positioning signal search window configuration in wireless communication system
  • Positioning signal search window configuration in wireless communication system
  • Positioning signal search window configuration in wireless communication system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0047] figure 1 A wireless communication system 10 is shown in accordance with some embodiments. In some embodiments, system 10 is a 5G system. System 10 may include a radio access network (RAN) 10A and a core network (CN) 10B. A radio access network 10A is shown providing radio access to wireless devices 12 (eg, user equipment (UE)) via one or more radio network nodes. The radio access network 10A in turn provides access to a core network 10B, which may connect the wireless device 12 to one or more other networks or systems, such as the Internet.

[0048] figure 1 It is shown that the wireless device 12 receives one or more signals 20A, 20B from one or more radio network nodes 14A, 14B. In embodiments where the wireless device 12 receives multiple signals 20A, 20B, these signals 20A, 20B may be received from the same radio network node (eg, radio network node 14A) or from different radio network nodes. Regardless, in some embodiments at least some of the signals 20A, 20B...

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Abstract

A network node (18) transmits, to a wireless device (12), assistance data (20) that indicates a search window (26) which is associated with a beamforming configuration. The search window (26) associated with the beamforming configuration may be a window within which a result (28) of a positioning measurement performed by the wireless device (12) on a positioning signal (20A) is expected to be for the associated beamforming configuration. The wireless device (12) may check whether a result (28) of the performed positioning measurement falls within the indicated search window (26), and deem the result (28) valid or invalid depending respectively on whether or not the result (28) falls within the indicated search window (26) according to that checking.

Description

technical field [0001] The present application relates generally to wireless communication systems, and more particularly to positioning signal window configurations in such systems. Background technique [0002] A wireless device performs positioning measurements (eg, observed time difference of arrival measurements) on one or more signals. Especially where the signal is in the higher frequency spectrum, positioning measurements can be prone to errors due to aliasing, sidelobes, and other sources of error. To prevent such errors, so-called search windows can be configured to specify the range of possible positioning measurements in the wireless device's current environment. For example, a search window for fine-grained location measurements can be defined based on a rough knowledge of the wireless device's location. Then, in these and other cases, the wireless device may consider the results of the positioning measurements valid only if the results fall within the search ...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S5/00
CPCH04W64/00G01S5/0036G01S5/0236G01S5/06G01S5/10G01S1/042H04B7/0617H04W16/28
Inventor 里特诗·施里瓦斯蒂夫艾婀娜·西奥米娜
Owner TELEFON AB LM ERICSSON (PUBL)
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