Initial cell detection method and device, storage medium and terminal

A cell detection and cell technology, applied in the communication field, can solve the problems affecting the search time and achieve the effect of improving the detection efficiency and shortening the search time

Active Publication Date: 2019-11-05
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Claims
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Problems solved by technology

[0006] In the initial startup stage, if there are too many frequency points, it will seriously affect the search time

Method used

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  • Initial cell detection method and device, storage medium and terminal
  • Initial cell detection method and device, storage medium and terminal
  • Initial cell detection method and device, storage medium and terminal

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Embodiment Construction

[0044] Those skilled in the art understand that, as mentioned in the background, at present, the mainstream design scheme of initial cell search (Initial cell search, ICS for short, also referred to as initial cell detection) is implemented by using PSS and SSS.

[0045] Specifically, PSS detection solves the group identifier NID2 (also called N(2)_ID) through the correlation operation of the received data and the local sequence; SSS detection is based on the detection results of PSS detection, and calculates the group An identifier NID1 (also called N(1)_ID); NID1 and NID2 constitute cell information (Physical Identity, PID for short).

[0046] However, since the New Radio (NR for short, also called New Air Interface) system proposes the concept of SCS (subcarrier spacing, SCS for short), for the bandwidth supporting multiple SCS modes at the same time, if the existing In the current ICS method, when trying ICS on each synchronization signal raster (SS raster for short), it i...

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Abstract

An initial cell detection method and device, a storage medium and a terminal, the method comprising: receiving data based on a maximum SCS mode associated with SSB, the data comprising information forinitial cell search; when the SSB is associated with a plurality of SCS modes, for each SCS mode, performing initial cell detection on the data in the SCS mode; and determining the initial cell according to the respective initial cell detection results of the plurality of SCS modes. Through the scheme provided by the invention, the initial cell detection and the SCS detection can be simultaneously completed through one-time data collection in the NR system, the network searching time is greatly optimized, and the efficiency is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to an initial cell detection method and device, a storage medium, and a terminal. Background technique [0002] In a mobile communication system, after the terminal is turned on, it needs to search for a suitable cell as soon as possible, so as to be synchronized with the cell in time and frequency, and then read the broadcast message of the cell. Wherein, the process from when the terminal is turned on and searches to camping on a suitable cell is the initial cell search process, which may also be referred to as the initial cell search process. [0003] Currently, the mainstream design solution for initial cell search is to use a primary synchronization signal (Primary Synchronization Signal, PSS for short) and a secondary synchronization signal (Secondary Synchronization Signal, SSS for short). [0004] In the New Radio (NR, NR for short, also called New Air ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04W56/00
CPCH04J11/0069H04W56/0015
Inventor 李俊强洪波薛昀
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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