CN101212801A - Method for obtaining emergency call information and mobile terminal thereof - Google Patents

Abstract

The present invention provides a method for obtaining emergency call information and its mobile terminal. The method includes: determining whether emergency call information is stored in the mobile terminal or in a SIM/USIM card; Read the emergency call information supported by the current PLMN; if the emergency call information has been stored, it is judged whether to update the emergency call information by reading the current PLMN. The present invention can update the emergency call information according to the cell where the mobile terminal currently camps, and ensures that the user can correctly initiate an emergency call no matter whether the mobile terminal has a SIM/USIM card or not when the user is within wireless coverage.

Description

Method for obtaining emergency call information and mobile terminal thereof

technical field

The present invention relates to a method for obtaining emergency call information and its mobile terminal, more specifically, to a method for obtaining emergency call information through an air interface and its mobile terminal.

Background technique

With the rapid development of mobile communication technology, mobile terminals have become the most important and most convenient tool for people to communicate. Especially in an emergency environment, it is one of the most convenient and fast methods to use a mobile terminal to initiate an emergency call to call the police or ask for help. According to international rules, regardless of whether the mobile terminal is inserted with a SIM/USIM card, or whether the cell currently camped is its HPLMN (Home Public Land Mobile Network, belonging to the public land mobile network), as long as the mobile terminal is in the supported access Within the wireless coverage of access technology, mobile terminals must be able to initiate emergency calls. These rules provide support for making emergency calls conveniently and quickly.

In order to achieve the above requirements and increase the priority of initiating an emergency call, the special message "Emergency Setup" (emergency call setup) for initiating an emergency call is defined separately in the current mobile communication specification. The processing of the emergency call is as follows: when the user dials the emergency call, he first inputs the emergency call number, and then the mobile terminal judges whether the number is an emergency call number supported by the local area. If yes, then look up the type of the emergency call, fill it into the emergency call setup message and send it to the network. The network side decides how to handle the emergency call according to the type in the emergency call setup message. The emergency number dialed by the user does not need to be transmitted to the network.

Currently, the agreement stipulates that emergency call numbers are stored on mobile terminals and SIM/USIM cards.

The following describes the process of a user dialing an emergency call number using a mobile terminal with reference to FIG. 1 . FIG. 1 shows a flow chart of the process of initiating an emergency call in a traditional method.

Referring to Fig. 1, when the user encounters an emergency, in step 101, the user inputs the emergency call number in the mobile terminal, and then in step 102 it is judged whether a SIM/USIM card is inserted in the mobile terminal, if inserted, then in step 103 it is judged whether the SIM/USIM card is inserted. Whether it is valid, if the card is valid, then in step 104 it is judged whether there is emergency call information on the card, if there is emergency call information, then in step 105, read the emergency call information, and in step 106 the telephone number of input will be compared with the information on the card The emergency call information is compared, then in step 108 it is judged whether the input number is an emergency call number, if yes, then in step 111, the type value is obtained from the emergency call information, then in step 112, the emergency call type is filled into the emergency call type Initiate information and initiate an emergency call. If the SIM/USIM card is not inserted in the mobile terminal in step 102, the card is invalid, or in step 108 it is judged that the input number compared in step 106 is not an emergency call number, then proceed to step 107 to compare the input number with the number on the mobile terminal Emergency call information for comparison. Then, in step 109, it is judged whether the input number is an emergency call number, if not, a normal call is initiated in step 110. Otherwise, at step 111, the type value is obtained from the emergency call information, and at step 112, the emergency call type is filled into the emergency call setup message and an emergency call is initiated.

Since the numbers and meanings of emergency calls are different in different countries, the judgment algorithm of emergency call numbers is relatively complicated. Three cases need to be distinguished as shown in Table 1 below:

(1) No SIM/USIM card;

(2) There is a SIM/USIM card, but no emergency call number is preset in the SIM/USIM card;

(3) There is a SIM/USIM card, and there is a preset emergency call number in the SIM/USIM card.

Table 1

No SIM/USIM card There is a SIM/USIM card, but there is no emergency call number preset in the SIM/USIM card There is a SIM/USIMM card, and the emergency call number is preset in the SIM/USIM card Emergency call without emergency call type 000, 08, 112, 110, 118, 119, 911, 999 112,911 112,911 Emergency call with emergency call type x x Emergency call numbers supported by operators (for example, CMCC plans to support emergency call numbers in the future: 110: police; 119: fire alarm 120: first aid) General call all other numbers All other numbers All other numbers

Although the existing algorithms are very complex, they still cannot solve all the problems:

(1) When no SIM/USIM card is inserted into the mobile terminal, the mobile communication specification stipulates that the mobile terminal only considers the numbers 000, 08, 112, 110, 118, 119, 911, and 999 as emergency call numbers, so in China , when the SIM/USIM card is not inserted in the mobile terminal, the emergency call to the 120 emergency center cannot be initiated;

(2) When the SIM/USIM card is inserted, but no emergency call number is preset in the SIM/USIM card, the mobile communication specification stipulates that the mobile terminal only considers 112 and 911 as emergency call numbers, and the user dials 110 and 120 to initiate an emergency call. Ordinary calls cannot achieve the effect of initiating emergency calls to ensure call priority;

(3) When a SIM/USIM card is inserted and an emergency call number is preset in the SIM/USIM card, if the operator's network does not support the use of the emergency call number, the user still cannot initiate an emergency call. For example, the current CMCC (China Mobile Communications Corporation) network does not support emergency calls in China such as 110 and 120, so that 110 and 120 will not be preset as emergency call numbers on SIM/USIM cards used in China. However, CMCC has made it clear that it will support various emergency calls in China (110, 120, etc.) when the network is upgraded in the future. At that time, all the SIM/USIM cards in the mobile terminal now need to be updated to support these emergency calls, otherwise, the emergency call still cannot be initiated. This brings great inconvenience to the user. In addition, when a mobile terminal user roams to another country, if the local emergency call number is different from the emergency call number stored in the SIM/USIM card, the user cannot normally initiate a local emergency call, which seriously affects the user's use.

Therefore, the above drawbacks seriously affect the effective use of the emergency call function by the user of the mobile terminal.

Contents of the invention

The purpose of the present invention is to provide a method for obtaining emergency call information through an air interface and a mobile terminal thereof.

According to an aspect of the present invention, there is provided a method for obtaining emergency call information, the method comprising: determining whether emergency call information is stored in the mobile terminal or in the SIM/USIM card; The SIB reads the emergency call information supported by the current PLMN.

According to another aspect of the present invention, a mobile terminal for obtaining emergency call information is provided. The mobile terminal includes: a storage unit for storing emergency call information; a judging unit for determining whether the emergency call information is stored in the storage unit or in the SIM/USIM card Emergency call information: the emergency call information reading unit, if the judging unit determines that no emergency call information is stored, reads the emergency call information supported by the current PLMN from the SIB of the broadcast channel.

Description of drawings

These and/or other aspects and advantages of the present invention will become clear and easier to understand from the description of the following embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 shows the flowchart of the emergency call initiation process of traditional method;

2 is a flowchart illustrating a method for obtaining emergency call information according to an embodiment of the present invention;

3 is a flow chart illustrating a method for obtaining emergency call information according to another embodiment of the present invention;

Figure 4 shows an example in which a user initiates an emergency call by directly dialing an emergency call number;

Figure 5 shows an example in which a user initiates an emergency call by selecting an emergency call type;

FIG. 6 is a block diagram illustrating a mobile terminal obtaining emergency call information according to an embodiment of the present invention.

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Using a mobile terminal to initiate an emergency call should have the following characteristics:

(1) No matter whether the SIM/USIM card is inserted in the mobile terminal, the emergency call can be correctly initiated;

(2) The emergency call information needs to be updated according to the country where the mobile operator is located and the degree to which the mobile operator network supports the emergency call information.

As mentioned above, because presetting the emergency call information on the mobile terminal or the SIM/USIM card cannot solve the problem caused by having different emergency call information in different countries or regions, the present invention does not use emergency call information stored in the mobile terminal Or the solution on the SIM/USIM card, but through the air interface to obtain the emergency call information supported by the current network.

In the present invention, the mobile network broadcasts the emergency call information supported by the current network in the SIB (System Information Block, System Information Block) of the broadcast channel. The number of emergency call types stipulated in the protocol is limited (five individual emergency calls and one joint emergency call), so it is easy to distribute the emergency call information supported by the current network in the SIB. Table 2 below shows emergency call information.

Table 2

emergency number

Type of emergency call Corresponding binary type value (China Region) Police 00000001 110 First aid (Ambulance) 00000010 120 Fire Brigade 00000100 119 Marine Guard 00001000 none Mountain Rescue 00010000 none Comprehensive rescue such as: police (Police) + first aid (Ambulance) User-defined example: 00000011 none

After the mobile terminal is turned on, it camps in a certain cell, reads the MIB (Management Information Base, Management Information Base) information issued by the broadcast channel of the cell, and obtains the current PLMN (Public Land Mobile Network, public land mobile network) information from the MIB information .

Compare whether the current PLMN information is the same as the PLMN information stored in the mobile terminal. If the two are the same and the emergency call information supported by the current PLMN has been stored in the mobile terminal, the emergency call information will not be updated; if the PLMN has been updated or the current PLMN information is not stored. The mobile terminal parses the emergency call information in the SIB and stores it in the mobile terminal.

When the PLMN is updated, the mobile terminal needs to re-parse the emergency call information in the SIB.

Through the above process, the mobile terminal can dynamically obtain the emergency call information supported by the current wireless network.

A method for obtaining emergency call information according to an embodiment of the present invention will be described below with reference to FIG. 2 . FIG. 2 is a flowchart illustrating a method of obtaining emergency call information according to an embodiment of the present invention.

Referring to Fig. 2, the user's mobile terminal is turned on (step 201), as long as the mobile terminal is within the wireless coverage area, no matter whether a SIM/USIM card is inserted in the mobile terminal, the mobile terminal can access the wireless network (without SIM/USIM card). USIM card, the mobile terminal will be in the "emergency call" state). At this time, the mobile terminal reads the MIB issued by the broadcast channel, so as to obtain the current PLMN information (step 202). Next, it is judged whether emergency call information is stored in the mobile terminal or in the SIM/USIM card (step 203). If the emergency call information is not stored, the emergency call information supported by the current PLMN is read from the SIB of the broadcast channel (step 204). Then, store the read emergency call information in the mobile terminal or in the SIM/USIM card, and display the emergency call information on the display screen of the mobile terminal for selection by the user (step 206). Next, judge whether the PLMN is updated (step 208), if the PLMN is updated, proceed to step 202, otherwise wait.

If it is determined in step 203 that the emergency call information is stored in the mobile terminal or in the SIM/USIM card, then the information of the PLMN when the emergency call information is stored is compared with the information of the PLMN where the mobile terminal is currently located to confirm whether the two are consistent (step 205). If the two are inconsistent, it indicates that the PLMN has been updated, proceed to step 204, and read the emergency call information from the SIB of the broadcast channel. If the two are consistent, there is no need to read the emergency call information from the SIB, so there is no need to update the emergency call information stored in the mobile terminal, that is, keep the stored emergency call information unchanged (step 207).

FIG. 3 is a flowchart illustrating a method of obtaining emergency call information according to another embodiment of the present invention.

Referring to FIG. 3, after the mobile terminal is turned on (step 301), it is determined whether emergency call information is stored in the mobile terminal or in the SIM/USIM card (step 302). If the emergency call information is not stored, the emergency call information supported by the current PLMN is read from the SIB of the broadcast channel (step 303). If it is determined that the emergency call information is stored in the mobile terminal or the SIM/USIM card, then read the MIB information issued by the broadcast channel, so as to obtain the information of the PLMN where the mobile terminal is currently located from the MIB information (step 305). Then, compare the information of the PLMN supporting the stored emergency call information with the information of the PLMN where the mobile terminal is currently located, and confirm whether the two are consistent (step 306). If the two are inconsistent, it indicates that the PLMN has been updated, and the emergency call information supported by the current PLMN is read from the SIB of the broadcast channel (step 303). If the two are consistent, keep the stored emergency call information unchanged (step 307). In addition, if the emergency call information is read, the read emergency call information may be stored in the mobile terminal or the SIM/USIM card, thereby updating the previously stored emergency call information (step 304).

After obtaining the emergency call information, the mobile terminal can provide the emergency call information to the user. Emergency call information may include an emergency call number and/or an emergency call type. The user can directly dial the emergency call number (as shown in FIG. 4 ) or select the type of emergency call to be initiated in the menu (as shown in FIG. 5 ) to initiate an emergency call.

FIG. 6 is a block diagram illustrating a mobile terminal obtaining emergency call information according to an embodiment of the present invention.

Referring to FIG. 6 , the mobile terminal includes: a storage unit 610 , a judgment unit 620 , an emergency call information reading unit 630 , a PLMN information reading unit 640 , a PLMN information comparison unit 650 and an emergency call initiation unit 660 .

The storage unit 610 may store emergency call information. Certainly, the emergency call information may not be pre-stored in the storage unit 610 . The judging unit 620 determines whether emergency call information is stored in the storage unit 610 or in the SIM/USIM card. If the judging unit 620 determines that there is no emergency call information stored in the storage unit 610 or in the SIM/USIM card, the emergency call information reading unit 630 reads the emergency call information supported by the current PLMN from the SIB of the broadcast channel, and may read the The emergency call information is stored in the storage unit 610.

If the judging unit 620 determines that the emergency call information is stored in the mobile terminal or the SIM/USIM card, the PLMN information reading unit 640 reads the current PLMN information from the MIB information sent by the broadcast channel. The PLMN information comparing unit 650 compares the information of the PLMN supporting the stored emergency call information with the information of the current PLMN to confirm whether they are consistent. If the two are inconsistent, it indicates that the PLMN has been updated, and the emergency call information reading unit 630 reads the emergency call information supported by the current PLMN from the SIB of the broadcast channel, and stores the read emergency call information in the storage unit 610 . If both are consistent, the emergency call information reading unit 630 keeps the previously stored emergency call information unchanged.

After the mobile terminal obtains the emergency call information, it can provide the emergency call information to the user. The emergency call initiating unit 660 can initiate an emergency call according to the emergency call number directly dialed by the user (as shown in FIG. 4 ) or the emergency call type selected by the user (as shown in FIG. 5 ).

In summary, the present invention has the following advantages compared to the prior art:

(1) The emergency call information can be updated according to the cell where the mobile terminal is currently camped, ensuring that the user can correctly initiate an emergency call when the user is within wireless coverage, regardless of whether the mobile terminal has a SIM/USIM card;

(2) The emergency call number may not be stored on the mobile terminal or the SIM/USIM card, so as to avoid the problem that the user initiates an emergency call when the mobile terminal roams to a network with different emergency call numbers;

(3) The emergency call number may not be stored on the mobile terminal or SIM/USIM card, and the traditional complicated emergency call discrimination algorithm is also avoided;

(4) Updating the emergency call information through the air interface can avoid the problem that different operators have different levels of support for the emergency call information.

While the invention has been particularly described and shown with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that modifications may be made thereto without departing from the spirit and scope of the invention as defined by the claims. Various changes in form and detail.

Claims (24)

1. method that obtains emergency call information comprises:

Determine in the portable terminal or the SIM/USIM card in whether stored emergency call information;

If do not store emergency call information, then the SIB from broadcast channel reads the emergency call information that current PLMN supports.

2. method according to claim 1 also comprises:

If store emergency call information in the portable terminal or in the SIM/USIM card, then the mib information that issues from broadcast channel reads the information of current PLMN;

To support the information of PLMN of emergency call information of described storage and the information of described current PLMN to compare;

If support the information of PLMN of emergency call information of described storage and the information inconsistency of described current PLMN, then the SIB from broadcast channel reads the emergency call information that current PLMN supports, upgrades the emergency call information of described storage.

3. method according to claim 2 also comprises:

If support that the information of PLMN of emergency call information of described storage is consistent with the information of described current PLMN, then keep the emergency call information of described storage constant.

4. method according to claim 1 also comprises:

In determining portable terminal or before whether having stored emergency call information in the SIM/USIM card, the mib information that issues from broadcast channel reads the information of current PLMN.

5. method according to claim 4 also comprises:

If store emergency call information in the portable terminal or in the SIM/USIM card, then will support the information of PLMN of emergency call information of described storage and the information of described current PLMN to compare;

If support the information of PLMN of emergency call information of described storage and the information inconsistency of described current PLMN, then the SIB from broadcast channel reads the emergency call information that current PLMN supports, upgrades the emergency call information of described storage.

6. method according to claim 5 also comprises:

If support that the information of PLMN of emergency call information of described storage is consistent with the information of described current PLMN, then keep the emergency call information of described storage constant.

7. according to claim 2 or 5 described methods, also comprise:

Be stored in the emergency call information that reads in the portable terminal or the SIM/USIM card in.

8. method according to claim 7 also comprises:

Initiate urgent call according to the emergency call information that reads.

9. method according to claim 8, wherein, the emergency call information that reads comprises at least a in emergency telephone number and the urgent call type.

10. method according to claim 9 wherein, is initiated urgent call by direct emergency call number or selection urgent call type.

11., also comprise according to claim 3 or 6 described methods:

Initiate urgent call according to the described emergency call information that remains unchanged.

12. method according to claim 11, wherein, the described emergency call information that remains unchanged comprises at least a in emergency telephone number and the urgent call type.

13. method according to claim 12 wherein, is initiated urgent call by direct emergency call number or selection urgent call type.

14. a portable terminal that obtains emergency call information comprises:

Memory cell is used to store emergency call information;

Judging unit, determine in the memory cell or the SIM/USIM card in whether stored emergency call information;

The emergency call information reading unit, if judging unit determines not store emergency call information, then the SIB from broadcast channel reads the emergency call information that current PLMN supports.

15. portable terminal according to claim 14 also comprises:

PLMN information reading unit, if judging unit determines to store emergency call information, then the mib information that issues from broadcast channel reads the information of current PLMN;

Comparing unit will support the information of PLMN of emergency call information of described storage and the information of the current PLMN that PLMN information reading unit reads to compare, and

If support the information of PLMN of emergency call information of described storage and the information inconsistency of described current PLMN, then the emergency call information reading unit reads the emergency call information that current PLMN supports from the SIB of broadcast channel, upgrades the emergency call information of described storage.

16. portable terminal according to claim 15, wherein, the emergency call information reading unit be stored in the emergency call information that reads in the memory cell or the SIM/USIM card in.

17. portable terminal according to claim 15, wherein, if support that the information of PLMN of emergency call information of described storage is consistent with the information of described current PLMN, then the emergency call information reading unit keeps previously stored emergency call information constant.

18., also comprise according to claim 16 or 17 described portable terminals:

The unit is initiated in urgent call, initiates urgent call according to emergency call information.

19. portable terminal according to claim 18, wherein, urgent call is initiated the unit and is initiated urgent call according to the emergency call information that the emergency call information reading unit reads.

20. portable terminal according to claim 19, wherein, the emergency call information that reads comprises at least a in emergency telephone number and the urgent call type.

21. portable terminal according to claim 20, wherein, urgent call is initiated the urgent call type that the emergency telephone number directly dialed according to the user unit or user select and is initiated urgent call.

22. portable terminal according to claim 18, wherein, urgent call is initiated the unit and is initiated urgent call according to the described emergency call information that remains unchanged.

23. portable terminal according to claim 22, wherein, the described emergency call information that remains unchanged comprises at least a in emergency telephone number and the urgent call type.

24. portable terminal according to claim 23, wherein, urgent call is initiated the urgent call type that the emergency telephone number directly dialed according to the user unit or user select and is initiated urgent call.

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