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Terminal mode switching method, and terminal

A terminal mode and terminal technology, applied in the field of communication, can solve problems such as affecting the use of user terminals, and achieve the effect of fast switching and reducing the impact

Active Publication Date: 2017-01-11
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, multi-mode terminals that support LTE mode need a long time to successfully camp in the optimal cell after switching from LTE slave mode to main mode, which affects the use of the terminal by users.

Method used

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  • Terminal mode switching method, and terminal
  • Terminal mode switching method, and terminal
  • Terminal mode switching method, and terminal

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Embodiment Construction

[0034] At present, multi-mode terminals supporting LTE mode need to perform frequency offset estimation when switching from LTE slave mode to main mode, and perform frequency offset compensation according to the results of frequency offset estimation, resulting in that it takes a long time for the terminal to successfully reside in Cells in LTE mode affect user usage.

[0035] In view of the above problems, an embodiment of the present invention provides a terminal mode switching method. The method performs frequency offset estimation and frequency offset compensation when the terminal is in the LTE slave mode, and then can be switched from the LTE slave mode to the terminal. When entering the main mode, it directly resides in the cell under the LTE mode according to the measured results after compensation, without the need to perform frequency offset estimation and frequency offset compensation when the terminal is switched from the LTE slave mode to the main mode, so it can r...

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Abstract

The invention discloses a terminal mode switching method, and a terminal. The terminal mode switching method comprises the steps of: receiving a primary synchronization signal and a secondary synchronization signal transmitted by a base station and performing frequency offset estimation when the terminal is in an LET slave mode, so as to obtain a frequency offset estimation value corresponding to a measured cell; carrying frequency offset compensation on a measurement result of the measured cell according to the frequency offset estimation value; and selecting an optimal cell for residence according to the compensated measurement result when the terminal switches from the LTE slave mode to a master mode. By applying the terminal mode switching method, the rapid switching of the terminal from the LTE slave mode to the master mode can be realized, thereby reducing the influence on the use of the terminal by a user.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a terminal mode switching method and a terminal. Background technique [0002] In an LTE system, a base station sends cell information to a terminal UE through a primary synchronization channel (Physical Shared Channel, PSCH) and a secondary synchronization channel (Secondary Synchronization Channel, SSCH). Wherein, the information carried by the PSCH is a primary synchronization signal (Physical Shared Channel Signal, PSS), and the information carried by the SSCH is a secondary synchronization signal (Secondary Synchronization Channel Signal, SSS). Through its own series of processing, the UE can obtain the information transmitted by PSCH and SSCH, complete the synchronization of time and frequency, and then receive the broadcast information of the base station, obtain the system information of the base station, and complete the process of cell search. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04W88/06
CPCH04L27/0014H04W88/06
Inventor 陈园
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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