WO2016150003A1

WO2016150003A1 - Cell searching method and apparatus

Info

Publication number: WO2016150003A1
Application number: PCT/CN2015/079503
Authority: WO
Inventors: 宋延珍; 雷超; 吕亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-03-24
Filing date: 2015-05-21
Publication date: 2016-09-29
Also published as: CN106162813A

Abstract

Disclosed is a cell searching method, which is applied to a mobile terminal. The method comprises: when historic frequency point information is not obtained or it is failed to register a cell on a historic frequency point after startup, reading a frequency point database in a smart card, and obtaining a frequency point data list; after information about a region where a terminal is located is obtained, screening a frequency point data record under the region from the frequency point data list, and generating a frequency point list to be searched by a screening result; and performing, according to the frequency point list to be searched, cell searching. Also disclosed is a cell searching apparatus.

Description

Cell search method and device

Technical field

This document relates to the field of mobile communication technologies, and in particular, to a cell search method and apparatus.

Background technique

With the development of current mobile phone technology, multi-band multi-standard mobile phones are emerging one after another. Although the greatly increased frequency band can theoretically allow users to use a mobile phone for communication around the world, the side effect of the increased frequency band is that the mobile phone searches for a cell. , causing users to be unable to search the network for a long time, reducing the user experience.

In the related art, the process of cell search selection may be divided into: initial cell selection and stored information cell selection.

The initial cell selection search mode is mainly used for: the terminal does not know the network frequency points that have been deployed in the current region, and needs to scan the frequency bands supported by the current terminal one by one, and try to search for the strongest signal at each frequency point. Try cell identification. This situation usually occurs when the new mobile phone is turned on for the first time, or when the user arrives in a new country, the terminal does not know the current regional signal condition, and then needs to perform blind scanning. In the worst case, the number of supported frequency bands is large. Mobile phones may even take ten minutes to search for a cell, and the user experience is poor.

The search mode for storing the information cell selection is mainly used for: the terminal has made the initial cell selection and searched for the available frequency points, and then stores it for subsequent use. In the search mode selected by the storage information cell, the terminal will preferentially try to search for the stored frequency points, which generally reduces the search time. However, if the stored frequency points are not searched for the cell, the terminal will also adopt The initial cell selection mode performs full-band scanning again, which is still time consuming.

Therefore, how to make a cell phone search without requiring too many search attempts is a problem that needs to be solved.

Summary of the invention

Embodiments of the present invention provide a cell search method and apparatus, which can improve cell search efficiency.

The embodiment of the invention provides a cell search method, which is applied to a mobile terminal, and the method includes:

If the historical frequency information is not obtained after the power is turned on or the cell registration fails on the historical frequency point, the frequency point database in the smart card is read to obtain the frequency point data list;

After obtaining the area information of the terminal, the frequency point data record in the area is filtered out from the frequency point data list, and the frequency point table to be searched is generated from the screening result;

Performing a cell search according to the to-be-searched frequency point table.

Optionally, the obtaining the area information of the terminal includes:

Determining the area where the terminal is located according to the area information selected or input by the user; or

The terminal is positioned by the positioning device, and the area where the terminal is located is determined according to the positioning result.

Optionally, each of the frequency point records in the frequency point database includes at least one of the following information: a mobile country code MCC, a mobile network code MNC, a communication system, a frequency point value, and a frequency registration success number.

Optionally, the filtering, by using the frequency point data list, the frequency point data records in the area, including:

The frequency point data record in the area is filtered out from the frequency point data list according to the area where the terminal is located, the carrier network supported by the terminal, and the communication system supported by the terminal.

Optionally, the performing cell search according to the to-be-searched frequency point table includes:

The frequency point data records in the to-be-searched frequency point table are prioritized, and the cell search is performed on the plurality of frequency points in order from the highest to the lowest priority.

Optionally, the prioritizing the frequency point data records in the to-be-searched frequency point table, including:

Prioritizing the frequency point data records in the to-be-searched frequency point table according to the communication system priority; or prioritizing the frequency point data records in the to-be-searched frequency point table according to the frequency band priority;

The frequency points in the same communication system or frequency band are prioritized according to the number of successful frequency accesses, and the frequency points with frequent frequency access success times are high.

Optionally, after the cell search is performed according to the to-be-searched frequency point table, the method further includes:

If the cell signal is searched for at a frequency point and the registration is successful, the information of the frequency point is saved, the registration success number of the frequency point is incremented by 1, and the data record of the frequency point in the frequency point database in the smart card is recorded. Update.

If the frequency information provided by the operator is obtained from the cell broadcast information, the obtained frequency point information is compared with the frequency point information previously read from the frequency point database, and if the newly added information is found, The frequency point information is generated according to the newly added frequency point information, and the new frequency point data record is added to the frequency point database to be searched and the frequency point database in the smart card.

The embodiment of the invention further provides a cell search device, which is applied to a mobile terminal, and includes:

The frequency point data obtaining module is configured to read the frequency point database in the smart card to obtain the frequency point data list when the historical frequency point information is not obtained after the power is turned on or the cell registration fails at the historical frequency point;

The frequency point data screening module is configured to: after obtaining the area information of the terminal, select a frequency point data record in the area from the frequency point data list, and generate a frequency point table to be searched by the screening result;

The cell search module is configured to perform cell search according to the to-be-searched frequency point table.

Optionally, the frequency point data screening module obtains the area information of the terminal, including:

The frequency point data screening module determines an area where the terminal is located according to the area information selected or input by the user; or

The frequency point data screening module locates the terminal by using the positioning device, and determines the area where the terminal is located according to the positioning result.

Optionally, the frequency point data screening module filters the frequency point data records in the area from the frequency point data list, including:

The frequency point data screening module selects the frequency point data record in the area from the frequency point data list according to the area where the terminal is located, the carrier network supported by the terminal, and the communication system supported by the terminal.

Optionally, the cell search module performs cell search according to the to-be-searched frequency point table, including:

The cell search module prioritizes the frequency point data records in the to-be-searched frequency point table, and performs cell search on multiple frequency points in order from highest to lowest priority.

Optionally, the cell search module prioritizes the frequency point data records in the to-be-searched frequency point table, including:

The cell search module prioritizes the frequency point data records in the to-be-searched frequency point table according to the communication system priority; or prioritizes the frequency point data records in the to-be-searched frequency point table according to the frequency band priority Ordering

Optionally, the cell search module is further configured to: after performing a cell search according to the to-be-searched frequency point table, determine that if a cell signal is searched for at a frequency point and the registration is successful, the information of the frequency point is saved, The registration success count of the frequency point is incremented by 1, and the data record of the frequency point in the frequency point database in the smart card is updated.

Optionally, the cell search module is further configured to: after performing a cell search according to the to-be-searched frequency point table, determine, if the frequency point information provided by the operator is obtained from the cell broadcast information, the obtained frequency is obtained. The point information is compared with the frequency point information previously read from the frequency point database. If it is found that the newly added frequency point information is obtained, a new frequency point data record is generated according to the newly added frequency point information. Adding the new frequency point data record to the frequency point table to be searched and the frequency point database in the smart card.

The embodiment of the invention further provides a computer readable storage medium storing program instructions, which can be implemented when the program instructions are executed.

Compared with the related art, a cell search method and apparatus provided by an embodiment of the present invention saves a frequency point database in a smart card, and if the mobile terminal is powered on, if the historical frequency information is not obtained or is registered at a historical frequency point, If the cell fails, the frequency point database is read from the smart card to obtain the frequency point letter. Interest, narrow the range of search frequency points according to the area where the terminal is located, and then optimize the search order of the frequency points according to the search strategy, thereby avoiding the worst-performing full-band search (initial cell selection search mode), saving the mobile phone The electric energy reduces the search time and improves the efficiency of the cell search frequency, so that the mobile terminal can complete the cell search selection process without much search attempt and improve the cell search efficiency.

BRIEF abstract

FIG. 1 is a flowchart of a cell search method according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a cell search apparatus according to an embodiment of the present invention.

FIG. 3 is a schematic flowchart diagram of a cell search method according to an application example of the present invention.

Embodiments of the invention

It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

As shown in FIG. 1 , an embodiment of the present invention provides a cell search method, which is applied to a mobile terminal, and the method includes:

S10: After failing to obtain historical frequency information after starting the power or failing to register the cell at the historical frequency point, reading the frequency point database in the smart card to obtain a frequency point data list;

S11: After obtaining the area information of the terminal, filtering the frequency point data record in the area from the frequency point data list, and generating a frequency point table to be searched by the screening result;

S12. Perform a cell search according to the to-be-searched frequency point table.

The method may also include the following features:

The smart card includes: a UICC (Universal Integrated Circuit Card) card; the smart card is used for user identity recognition;

When the operator issues a smart card for user identification (for example, a UICC card), it needs to store a preset frequency point database in the card file. When the user inserts the UICC card into the mobile terminal and powers on, the mobile terminal determines whether the mobile terminal exists. Historical frequency information, such as failure to obtain historical frequency information Or, when the cell registration fails on the historical frequency point, the frequency point database in the smart card is read to obtain a frequency point data list;

The historical frequency includes: the frequency at which the terminal successfully registers before; for example, the frequency at which the terminal successfully registers after the last power-on;

The failure of the terminal to register the cell at the historical frequency includes: the terminal does not search for the cell signal at the historical frequency, or the terminal searches for the cell signal at the historical frequency but the registration fails;

Each frequency point record in the frequency point database includes at least one of the following information: MCC (Mobile Country Code), MNC (Mobile Network Code), communication standard, frequency point value And the number of successful registrations of frequency points;

For example, as shown in Table 1 below, some of the frequency records in the frequency database are as follows:

Table 1

移动国家码Mobile country code	移动网络码Mobile network code	通信制式Communication system	频点数值Frequency point value	注册成功次数Number of successful registrations
移动国家码Mobile country code	移动网络码Mobile network code	通信制式Communication system	频点数值Frequency point value	注册成功次数Number of successful registrations	460460	0101	LTELTE	52305230	00
460460	0202	WCDMAWCDMA	98009800	00	460460	0101	LTELTE	52305230	00

For example, the corresponding mobile country code in China is 460, the mobile network code corresponding to China Mobile (operator) is 01, and the mobile network code corresponding to China Unicom (operator) is 02.

The information about the area where the terminal is located includes:

Positioning the terminal by using the positioning device, and determining an area where the terminal is located according to the positioning result;

After reading the frequency point database in the smart card to obtain the frequency point data list, the method further includes:

If the area information of the terminal is not obtained, the cell search is performed by using the initial cell selection search mode;

The area information of the terminal includes: information about the country where the terminal is located;

The frequency point data record in the area is filtered out from the frequency point data list, including:

According to the area where the terminal is located, the carrier network supported by the terminal, and the communication supported by the terminal. a system for filtering a frequency point data record in the area from the frequency point data list;

The performing cell search according to the to-be-searched frequency point table includes:

Performing frequency prioritization on the frequency point data records in the to-be-searched frequency point table, and performing cell search on multiple (including two or more) frequency points in order of priority from high to low;

After the cell search is performed according to the to-be-searched frequency point table, the method further includes:

If the cell signal is searched for at a frequency point and the registration is successful, the information of the frequency point is saved, the registration success number of the frequency point is incremented by 1, and the data record of the frequency point in the frequency point database in the smart card is recorded. Update;

The priority ordering of the frequency point data records in the to-be-searched frequency point table includes:

For the frequency points in the same communication system or frequency band, the frequency points are successfully prioritized according to the number of successful frequency access times, and the frequency points with more frequent frequency access times are higher in priority;

The frequency information provided by the operator obtained from the cell broadcast information includes: a frequency point value, a communication standard, and operator network information. That is, the frequency point data information can be dynamically managed from the network side.

The adding the new frequency point data record to the frequency point database in the to-be-searched frequency point table and the smart card includes: adding the new frequency point data record to the to-be-searched frequency point table. At the end of the existing frequency point data record of the carrier network corresponding to the frequency point, and adding the new frequency point data record to the operator network and the communication system corresponding to the frequency point in the frequency point database on the smart card There is already a record of the frequency data record.

As shown in FIG. 2, an embodiment of the present invention provides a cell search apparatus, which is applied to a mobile terminal, and includes:

The frequency point data obtaining module 21 is configured to read the frequency point database in the smart card to obtain the frequency point data list when the historical frequency point information is not obtained after the power is turned on or the cell registration fails on the historical frequency point;

The frequency point data screening module 22 is configured to: after obtaining the area information of the terminal, select a frequency point data record in the area from the frequency point data list, and generate a frequency point table to be searched by the screening result;

The cell search module 23 is configured to perform cell search according to the to-be-searched frequency point table.

Wherein, the device may further include the following features:

The frequency point data screening module 22 obtains the area information of the terminal, including:

The frequency point data screening module 22 determines an area where the terminal is located according to the area information selected or input by the user; or

The frequency point data screening module 22 locates the terminal by using the positioning device, and determines the area where the terminal is located according to the positioning result.

Each of the frequency point records in the frequency point database includes at least one of the following information: a mobile device country code, a carrier network code, a communication system, a frequency point value, and a frequency registration success number.

The frequency point data screening module 22 filters out the frequency point data records in the area from the frequency point data list, including:

The frequency point data screening module 22 filters the frequency point data records in the area from the frequency point data list according to the area where the terminal is located, the carrier network supported by the terminal, and the communication system supported by the terminal.

The cell search module 23 performs cell search according to the to-be-searched frequency point table, including:

The cell search module 23 prioritizes the frequency point data records in the to-be-searched frequency point table, and performs cell search on multiple frequency points in order from highest to lowest priority.

The cell search module 23 prioritizes the frequency point data records in the to-be-searched frequency point table. Sort by level, including:

The cell search module 23 prioritizes the frequency point data records in the to-be-searched frequency point table according to the communication system priority level, or performs frequency point data records in the to-be-searched frequency point table according to the frequency band priority level. Prioritization

The cell search module 23 is further configured to: after performing a cell search according to the to-be-searched frequency point table, determine that if a cell signal is searched for at a frequency point and the registration is successful, the information of the frequency point is saved, and the The number of registration success times of the frequency point is increased by 1, and the data record of the frequency point in the frequency point database in the smart card is updated.

The cell search module 23 is further configured to: after performing cell search according to the to-be-searched frequency point table, determine that if the frequency point information provided by the operator is obtained from the cell broadcast information, the obtained frequency point information is The frequency point information read from the frequency point database is compared, and if the newly added frequency point information is found, a new frequency point data record is generated according to the newly added frequency point information, and the A new frequency point data record is added to the frequency point table to be searched and to the frequency point database in the smart card.

Application example

In the related art, when the historical frequency point information is not obtained after the power is turned on or the registration fails at the historical frequency point, the cell search is performed by using the initial cell selection search mode, which is very time consuming and has a poor user experience.

As shown in FIG. 3, this application example assumes that the mobile terminal obtains the frequency information that is successfully registered before the local terminal after the power is turned on, but searches for the cell failure at the frequency point, and then performs the cell search by using the method of the embodiment of the present invention, including The following steps:

S301, the user turns on;

S302, it is determined whether the cell is searched for successfully after the last power-on and the registration is successful, if yes, the search ends, if not, then go to step S303;

S303. Read a frequency point database from the UICC card, and obtain a frequency point data list.

S304, prompting the user to select a current country, or obtaining a country information of the current terminal by using a positioning means (for example, GPS), and determining a mobile device country code;

For example, if the user selects China or determines the location of the terminal in China by GPS, the mobile device country code is 460;

S305. Filter frequency points from the frequency point data list according to the mobile device country code and the carrier network and communication standard supported by the terminal, and generate a frequency point table to be searched;

S306. Sort the frequency points in the search frequency point table according to the search strategy.

For example, the search strategy is: preferentially search for frequency points in the LTE (Long Term Evolution) system, and then search for frequency points in the GSM (Global System for Mobile Communication) system;

S307. Search for frequency points in the sorted frequency point table to be searched in sequence.

If the cell signal is searched for at a certain frequency and the registration is successful, the information of the frequency point is saved for use in the next boot search, and the search ends.

The cell search method and device provided by the foregoing embodiment saves the frequency point database in the smart card, and after the mobile terminal is powered on, if the historical frequency point information is not obtained or the cell registration fails at the historical frequency point, the smart card is read from the smart card. The frequency point database acquires the frequency point information, narrows the range of the search frequency points according to the condition of the area where the terminal is located, and optimizes the search order of the frequency points according to the search strategy, thereby avoiding the worst-performing full-band search (initial cell selection) Search mode), save mobile phone power, reduce search time, improve the efficiency of cell search frequency from multiple aspects, so that mobile terminal can complete cell search selection process without too many search attempts, and improve cell search efficiency.

One of ordinary skill in the art will appreciate that all or a portion of the steps described above can be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic or optical disk, and the like. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may be implemented by using a software function module. Formal realization. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

Industrial applicability

Compared with the related art, a cell search method and apparatus provided by an embodiment of the present invention saves a frequency point database in a smart card, and if the mobile terminal is powered on, if the historical frequency information is not obtained or is registered at a historical frequency point, If the cell fails, the frequency point database is read from the smart card to obtain the frequency point information, and the range of the search frequency points is narrowed according to the condition of the area where the terminal is located, and then the search order of the frequency points is optimized according to the search strategy, thereby avoiding the worst effect. Full-band search (initial cell selection search mode) saves mobile phone power, reduces network search time, improves the efficiency of cell search frequency, and allows mobile terminal to complete cell search selection process without increasing search attempts, and improve cell search effectiveness.

Claims

A cell search method is applied to a mobile terminal, and the method includes:

If the historical frequency information is not obtained after the power is turned on or the cell registration fails on the historical frequency point, the frequency point database in the smart card is read to obtain the frequency point data list;

After obtaining the area information of the terminal, the frequency point data record in the area is filtered out from the frequency point data list, and the frequency point table to be searched is generated from the screening result;

Performing a cell search according to the to-be-searched frequency point table.
The method of claim 1, wherein the obtaining the area information of the terminal comprises:

Determining the area where the terminal is located according to the area information selected or input by the user; or

The terminal is positioned by the positioning device, and the area where the terminal is located is determined according to the positioning result.
The method of claim 1 or 2 wherein:

Each of the frequency point records in the frequency point database includes at least one of the following information: a mobile country code MCC, a mobile network code MNC, a communication system, a frequency point value, and a frequency registration success number.
The method of claim 3, wherein the filtering the frequency point data records in the area from the frequency point data list comprises:

The frequency point data record in the area is filtered out from the frequency point data list according to the area where the terminal is located, the carrier network supported by the terminal, and the communication system supported by the terminal.
The method of claim 4, wherein the performing cell search according to the to-be-searched frequency point table comprises:

The frequency point data records in the to-be-searched frequency point table are prioritized, and the cell search is performed on the plurality of frequency points in order from the highest to the lowest priority.
The method of claim 5, wherein the prioritizing the frequency point data records in the to-be-searched frequency point table comprises:

Prioritizing the frequency point data records in the to-be-searched frequency point table according to the communication system priority; or prioritizing the frequency point data records in the to-be-searched frequency point table according to the frequency band priority;

For the frequency in the same communication system or frequency band, the priority is ranked according to the number of successful frequency accesses. In order, the frequency of frequency access is high, and the frequency priority is high.
The method of claim 6, after the cell search is performed according to the to-be-searched frequency point table, the method further includes:

If the cell signal is searched for at a frequency point and the registration is successful, the information of the frequency point is saved, the registration success number of the frequency point is incremented by 1, and the data record of the frequency point in the frequency point database in the smart card is recorded. Update.
The method of claim 1 or 2, after the cell search is performed according to the to-be-searched frequency point table, the method further includes:

If the frequency information provided by the operator is obtained from the cell broadcast information, the obtained frequency point information is compared with the frequency point information previously read from the frequency point database, and if the newly added information is found, The frequency point information is generated according to the newly added frequency point information, and the new frequency point data record is added to the frequency point database to be searched and the frequency point database in the smart card.
A cell search device is applied to a mobile terminal, including:

The frequency point data obtaining module is configured to read the frequency point database in the smart card to obtain the frequency point data list when the historical frequency point information is not obtained after the power is turned on or the cell registration fails at the historical frequency point;

The frequency point data screening module is configured to: after obtaining the area information of the terminal, select a frequency point data record in the area from the frequency point data list, and generate a frequency point table to be searched by the screening result;

The cell search module is configured to perform cell search according to the to-be-searched frequency point table.
The apparatus according to claim 9, wherein the frequency point data screening module acquires area information of the terminal, including:

The frequency point data screening module determines an area where the terminal is located according to the area information selected or input by the user; or

The frequency point data screening module locates the terminal by using the positioning device, and determines the area where the terminal is located according to the positioning result.
The apparatus according to claim 9 or 10, wherein each of the frequency point records in the frequency point database comprises at least one of the following information: a mobile country code MCC, a mobile network code MNC, a communication system, a frequency point value, and Frequency registration success times.
The apparatus according to claim 11, wherein the frequency point data screening module filters out the frequency point data records in the area from the frequency point data list, including:

The frequency point data screening module selects the frequency point data record in the area from the frequency point data list according to the area where the terminal is located, the carrier network supported by the terminal, and the communication system supported by the terminal.
The apparatus according to claim 12, wherein the cell search module performs a cell search according to the to-be-searched frequency point table, including:

The cell search module prioritizes the frequency point data records in the to-be-searched frequency point table, and performs cell search on multiple frequency points in order from highest to lowest priority.
The apparatus of claim 13, wherein the cell search module prioritizes the frequency point data records in the to-be-searched frequency point table, including:

The cell search module prioritizes the frequency point data records in the to-be-searched frequency point table according to the communication system priority; or prioritizes the frequency point data records in the to-be-searched frequency point table according to the frequency band priority Ordering

The frequency points in the same communication system or frequency band are prioritized according to the number of successful frequency accesses, and the frequency points with frequent frequency access success times are high.
The apparatus according to claim 14, wherein the cell search module is further configured to: after performing a cell search according to the to-be-searched frequency point table, determine that if a cell signal is searched for at a frequency point and the registration is successful, save the The frequency information is added to the number of registration success times of the frequency point, and the data record of the frequency point in the frequency point database in the smart card is updated.
The apparatus according to claim 9 or 10, wherein the cell search module is further configured to: after performing cell search according to the to-be-searched frequency point table, determine that if frequency information provided by an operator is obtained from cell broadcast information And comparing the obtained frequency point information with the frequency point information previously read from the frequency point database, and if it is found that the newly added frequency point information is obtained, generating the new frequency point information according to the newly added frequency point information. A new frequency point data record is added to the frequency point table to be searched and the frequency point database in the smart card.
A computer readable storage medium storing program instructions that, when executed, implement the method of any of claims 1-8.