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New air interface frequency scanning method and new air interface terminal

An air interface and frequency scanning technology, which is applied in the field of communication, can solve the problems of long time for frequency scanning and network search, large amount of calculation and storage, and achieve the effect of shortening the frequency scanning time

Active Publication Date: 2021-11-02
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of frequency scanning using frequency domain RSSI still has the problems of large amount of calculation and storage when it is implemented, and the problem of long time for frequency scanning and network search.

Method used

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  • New air interface frequency scanning method and new air interface terminal
  • New air interface frequency scanning method and new air interface terminal
  • New air interface frequency scanning method and new air interface terminal

Examples

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Embodiment Construction

[0033] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0034] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0035] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, methods, means, components and circuits well kn...

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Abstract

The present invention provides a new air interface frequency scanning method and a new air interface terminal. The method includes: transforming a received signal into a frequency domain signal for each working frequency band in the new air interface (NR) working frequency band; The GSCN number corresponding to the frequency point is used to judge whether there is a non-overlapping bandwidth between the PSS signal or SSS signal on the synchronization grid frequency point and the PSS signal or SSS signal on the adjacent synchronization grid frequency point; In the case of bandwidth, calculate the RSSI value of at least one RE in the non-overlapping bandwidth of the synchronous grid frequency point as the RSSI value of the synchronous grid frequency point; when it is judged that there is no non-overlapping bandwidth, calculate the synchronization raster The RSSI value of the SS / PBCH full bandwidth at the grid frequency point is used as the RSSI value of the synchronization grid frequency point; and the synchronization grid frequency points of the NR working frequency band are sorted according to the calculated RSSI value. Therefore, fast frequency scanning of the NR frequency band can be realized with a small amount of calculation and storage, thereby shortening the frequency scanning time.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an NR (New Radio, new air interface) frequency scanning method and an NR terminal. Background technique [0002] Under normal circumstances, when an NR terminal performs an NR band (NR band) network search, it first scans the NR band to obtain the frequency point sorting results of the Synchronization Raster, and then performs PSS (Primary synchronization) frequency points one by one. signal, primary synchronization signal) / SSS (SSS, Secondary synchronization signal, secondary synchronization signal) / PBCH (Physical broadcast channel, physical broadcast channel) detection and demodulation, in order to find the NR frequency point with the strongest cell signal as soon as possible. [0003] When scanning the NR frequency band, in one aspect, the NR frequency band can be scanned using time-domain RSSI (Received Signal Strength Indication, Received Signal Strength Indica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04B17/318H04B17/382
CPCH04W56/001H04W56/0015H04B17/318H04B17/382
Inventor 吴大焰
Owner SPREADTRUM COMM (SHANGHAI) CO LTD