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Cell synchronizing method, device and mobile terminal

A cell synchronization and mobile terminal technology, applied in the communication field, can solve the problems of increasing MS power consumption, inability to perform comparison operations, complex implementation, etc., and achieve the effect of avoiding cell synchronization

Active Publication Date: 2009-10-21
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first method is that the MS searches for the cell twice in a row and compares the synchronization information of the cell obtained twice. On the one hand, it will increase the power consumption of the MS. On the other hand, it may be more complicated to implement. If the MS searches for the cell twice in a row, Only one search to obtain the synchronization information of the cell, or no search to obtain the synchronization information of the cell at all, the comparison operation cannot be performed, which increases the complexity of implementation;
[0011] The second method is that the MS compares the obtained synchronization information of the cell with the prior information. In the actual network, the BSIC information of the cell will change. If it is compared with the existing prior information, it will lead to The MS cannot capture the cell whose BSIC information changes in time

Method used

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  • Cell synchronizing method, device and mobile terminal
  • Cell synchronizing method, device and mobile terminal
  • Cell synchronizing method, device and mobile terminal

Examples

Experimental program
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Embodiment 1

[0033] Such as figure 1 As shown, a cell synchronization method provided by an embodiment of the present invention includes:

[0034] Step 1: Obtain synchronization information from the cell through the synchronization channel;

[0035] Step 2: Obtain the cell frame number through the synchronization information;

[0036] Step 3: judging whether the frame number of the cell conforms to the frame number rule of the synchronization channel;

[0037] Step 4: If the frame number of the cell conforms to the frame number rule of the synchronization channel, synchronize with the cell through the synchronization information.

[0038] Such as figure 2 As shown, for example, the step 3 of judging whether the frame number of the cell conforms to the frame number rule of the synchronization channel may include:

[0039] Step 31: Obtain the frame number M of the multiframe carrying the synchronization information;

[0040] Step 32: Obtain the number N of frames between the synchroniz...

Embodiment 2

[0050] The cell synchronization method provided by the embodiment of the present invention is further described below based on the GSM or GPRS protocol.

[0051] In the GSM or GPRS system, each frame is 4.615ms, and each frame has 8 time slots; 26 or 51 consecutive frames form a multiframe, 26 multiframes are used for traffic channels and their associated control channels, 51 The multiframe is used for the information transmission of the common channel; 51×26 frames form a superframe (superframe), and a superframe includes 1326 frames of 51×26; 2048 superframes form a hyperframe (hyperframe), and a hyperframe Frames include 2048×1326 total 2715648 frames.

[0052] Such as Figure 5As shown, in the GSM or GPRS system, the network side broadcasts the public information of the current cell through 51 multiframes, and every 51 multiframes, after every 5 frequency correction channels (FCH, Frequency Correction Channel), are 5 synchronization channels (SCH, Synchronization Channel...

Embodiment 3

[0068] Based on the above method of cell synchronization, such as image 3 As shown, the embodiment of the present invention provides a device for cell synchronization, including:

[0069] Synchronization information acquisition module 10, used to obtain synchronization information from the cell through a synchronization channel;

[0070] A frame number acquisition module 20, configured to obtain a cell frame number through the synchronization information;

[0071] A judging module 30, configured to judge whether the frame number of the cell conforms to the frame number rule of the synchronization channel;

[0072] Synchronization module 40, the frame number of the cell conforms to the frame number rule of the synchronization channel, and is used for synchronizing with the cell through the synchronization information.

[0073] optional, such as Figure 4 As shown, the judging module 30 may include:

[0074] The obtaining sub-module 301 is configured to obtain the frame num...

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Abstract

The embodiment of the invention provides a cell synchronizing method, a device and a mobile terminal. The cell synchronizing method comprises the following steps: acquiring synchronizing information of a cell through a synchronizing channel; acquiring a cell frame number through the synchronizing information; judging whether the cell frame number accords with a frame number rule of the synchronizing channel; and if the cell frame number accords with the frame number rule of the synchronizing channel, synchronizing the cell through the synchronizing information. The cell synchronizing method, the device and the mobile terminal provided by the embodiment acquire the synchronizing information of the cell from the synchronizing channel, acquire the cell frame number through the synchronizing information, and judge whether the cell frame number accords with the frame number rule of the synchronizing channel so as to determine whether the synchronizing information of the cell is accurate through a convenient and quick mode and avoid error synchronizing information so as not to realize cell synchronization.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a cell synchronization method, device and mobile terminal. Background technique [0002] Based on GSM / GPRS (Global System of Mobile, Global System for Mobile Communications or Communication General Packet Radio Service, General Radio Packet Service) technology, MS (Mobile Station, mobile terminal) needs to maintain six strongest neighboring cells, which is convenient for MS to carry out cell Reselection or handover ensures that the MS resides in the best cell in real time and obtains the best network service. [0003] When maintaining the six strongest neighboring cells, the MS obtains the synchronization information of the neighboring cells, and performs cell synchronization with the neighboring cells through the synchronization information. If the synchronization is successful, the cell will become a candidate cell for MS reselection or handover. [0004] At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W88/02H04B7/26H04L1/00
Inventor 罗青全马颖茂胡向前韩燕贾婧赵虹李萌韩景超
Owner HONOR DEVICE CO LTD
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