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Mobile Phone Patent Abstract
A method for transmitting an emergency call of a mobile phone includes
the steps of: receiving position recognition information from a
base station via a forward channel in roaming a mobile terminal;
varying a search position on an emergency call mapping table previously
stored in a memory according to the received position recognition
information; and transmitting a call by a phone number set on the
varied search position when an emergency call needs to be transmitted.
With this method, even though the user is not aware of the emergency
call number of a country or an area where he uses his mobile phone
to make an emergency call or even though he or she is not aware
of a one-touch dial number or a manual for making a call, the user
can easily make an emergency call. Moreover, by linking the read
address of the phone book, in which the emergency call number has
been stored, to the key for making an emergency call, making an
emergency call can be promptly performed automatically by one-time
key manipulation.
Mobile Phone Patent Claims
What is claimed is:
1. A method for transmitting an emergency call using a CDMA mobile
phone during roaming, comprising: receiving position recognition
information from a base station; identifying an emergency call number
from an emergency call mapping table stored in a memory using the
position recognition information; storing the emergency call number
in a phone book of the mobile phone; linking an emergency key to
the emergency call number stored in the phone book such that when
the emergency key is activated, the emergency number stored in the
phone book is directly dialed without comparing the stored emergency
number to other emergency numbers in the emergency call mapping
table; and transmitting an emergency call using the emergency key,
wherein the position recognition information is periodically transmitted
through an extended system parameter message (ESPM) of a paging
channel from the base station, and wherein the emergency call mapping
table includes position recognition information allocated by countries
and emergency call numbers corresponding to the position recognition
information such that the emergency call number can be identified
from the emergency call mapping table using the position recognition
information in the ESPM without requiring modification of the ESPM
to include an emergency call number.
2. The method according to claim 1, wherein the position recognition
information includes a Mobile Country Code.
3. The method according to claim 1, further comprising: shifting
a pre-set search position on the emergency call mapping table to
a position which corresponds to the received position recognition
information when the mobile phone enters an area which corresponds
to the received position recognition information.
4. The method according to claim 1, wherein the transmitting step
includes: directly transmitting the emergency call using the emergency
key.
5. The method according to claim 1, further comprising: automatically
replacing the emergency number stored in the phonebook with a new
emergency number if position recognition information is received
indicating a new emergency number.
6. A method for transmitting an emergency call of a CDMA mobile
phone, comprising: receiving position recognition information from
a base station via a forward channel in roaming a mobile terminal;
searching an emergency call mapping table previously stored in a
memory according to the received position recognition information
and setting an emergency call number; storing the emergency call
number in a phone book of the mobile phone linking a one-touch dial
to the emergency number stored in the phone book such that when
the one-touch dial is activated, the emergency number stored in
the phonebook is directly dialed without comparing the stored emergency
number to other emergency numbers in the emergency call mapping
table; and transmitting an emergency call by using the one-touch
dial, wherein the position recognition information is transmitted
through an extended system parameter message (ESPM) of the forward
channel, and wherein the emergency call mapping table includes position
recognition information allocated by countries and emergency call
numbers corresponding to the position recognition information such
that the emergency call number can be identified from the emergency
call mapping table using the position recognition information in
the ESPM without requiring modification of the ESPM to include an
emergency call number.
7. The method according to claim 6, wherein a read address of the
phone book is identical to the number of the one-touch dial.
8. The method according to claim 6, wherein the position recognition
is information is a Mobile Country Code.
9. The method according to claim 6, further comprising: automatically
replacing the emergency number stored in the phone book with a new
emergency number if position recognition information is received
indicating a new emergency number.
10. A method for transmitting an emergency call of a CDMA mobile
phone, comprising: allocating position recognition information and
an emergency call number to a mapping table; receiving position
recognition information that is periodically transmitted from a
base station; searching an emergency call number by comparing the
received position recognition information to position recognition
information stored in the mapping table and storing the emergency
call number in a phone book of the mobile terminal; linking a read
address of the emergency call number stored in the phonebook to
a one-touch dial; automatically replacing the emergency number stored
in the phonebook with a new emergency number if new position recognition
information is received indicating the mobile phase has moved to
a new position by searching the mapping table to identify the new
position information and the corresponding new emergency number
and replacing the emergency number stored in the phonebook with
the new emergency phone number; and making an emergency call by
using the one-touch dial, wherein the position recognition information
is transmitted through an extended system parameters message.
11. The method according to claim 10, wherein the emergency number
stored in the phone book is directly dialed without comparing the
received position recognition information to position recognition
information stored in the first memory.
12. A method for making an emergency phone call using a phone in
a CDMA mobile communication system, comprising: receiving current
location information; searching a table in the phone to locate an
emergency phone number corresponding to the current position information;
storing the emergency call number in an address of a phone book
stored in the phone; and linking the emergency number stored in
the phone book with an emergency activation mechanism on the phone
such that when the emergency activation mechanism is activated,
the emergency number stored in the phone book is directly dialed
without comparing the emergency phone number with other phone numbers
in the table, wherein the position recognition information is transmitted
through an extended system parameters message, and wherein the table
includes position recognition information allocated by countries
and emergency call numbers corresponding to the position recognition
information such that the emergency call number can be identified
from the table using the position recognition information in the
ESPM without requiring modification of the ESPM to include emergency
call number.
13. The method of claim 12, wherein the emergency activation mechanism
an alpha-numeric key of the phone.
14. The method of claim 13, wherein the key is a one-touch key
of the phone.
15. The method of claim 12, wherein the current location information
includes a Mobile Country Code.
16. The method according to claim 12, further comprising: automatically
replacing the emergency number stored in the phonebook with a new
emergency number if position recognition information is received
indicating a new emergency number.
17. A method for transmitting an emergency call using a mobile
phone during roaming, comprising: receiving a mobile country code
from a base station; and using the mobile country code to identify
a national emergency number from an emergency call number mapping
table stored in a memory, wherein: the identified national emergency
number is stored in a read address of a phone book, the read address
of the phone book in which the national emergency number is stored
is linked to the emergency call key, the emergency call is directly
transmitted using the emergency call key, and the mobile country
code is periodically transmitted through an extended system parameters
message (ESPM) from a base station to thereby update the phone book
with the emergency number.
18. The method according to claim 17, wherein the emergency call
number mapping table includes mobile country codes and the national
emergency call numbers corresponding to the mobile country codes.
19. The method according to claim 17, wherein identifying the national
emergency call number is an emergency call number mapping table
comprises varying a search position in the emergency call number
mapping table according to the received mobile country code.
20. The method according to claim 19, wherein when varying the
search position, a search position pre-set on the emergency call
number mapping table when the user is in a different area is moved
to a region in which the same mobile country code as the currently
received mobile country code.
21. The method according to claim 19, wherein the mobile country
code is stored in memory when it is received, and is compared with
the mobile country code in the emergency call number mapping table
to identify the national emergency call number.
22. The method according to claim 17, wherein an emergency call
is transmitted by one touch dialing.
23. The method according to claim 17, wherein the read address
of the phone book is identical to the number of the emergency call
key.
24. The method according to claim 17, further comprising: allocating
the mobile country code and the national emergency call number to
a mapping table.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method for transmitting an emergency
call of a mobile phone.
2. Description of the Background Art
FIG. 1. illustrates a general mobile phone (mobile terminal).
As shown in the drawing, the mobile phone includes a main body
1, an LCD 2, and a key pad unit 3 provided with keys for inputting
a phone number and a text data and other various function keys.
In this respect, the function keys refer to keys for searching,
storing, deleting and menu selection keys.
A communicating method of the mobile phone constructed as described
above will now be explained.
1) General Communication
When a mobile phone is powered-up, it receives a pilot channel,
a synchronous channel and a paging channel through a forward channel
between the mobile phone and a base station, by which the mobile
phone is ready for providing service to a user.
In this state, a user inputs a phone number of a called party by
operating a key pad (3) of the mobile phone. And, the user confirms
whether the phone number of a called party has been properly inputted
through the LCD 2. Upon confirmation of proper inputting, the user
presses a communication key (or `SEND`). Then, a call is established
between the user and the called party through a base station, a
base station controller and a mobile switching center, so that the
user can communication with the called party by means of the mobile
phone.
At this time, the signal is transmitted from the mobile phone to
the base station through a reverse channel. That is, a voice or
(a data) and signal information are transmitted via a reverse communication
channel, while a response to a message received via a paging channel
is transmitted via an access channel.
2) Emergency Communication
A phone number for an emergency call is distinguished from general
phone numbers. For example, a phone number for a crime report is
112 and a phone number for a fire or a disaster reports is 119.
Accordingly, the user directly inputs a phone number for an emergency
call by operating the key pad (3) of the mobile phone to communicate
with a called party in the same manner as the general communication.
In detail, the user inputs a phone number, i.e., `112`, for an
emergency call through a normal dialing method. The inputted phone
number (`112`) is compared with a mapping table stored in a memory
unit (not shown) of the mobile phone, to check whether there is
a corresponding phone number (`112`) in the mapping table. At this
time, in case that the corresponding phone number (`112`) exists
in the mapping table, its area position is identified to check whether
the corresponding phone number (`112`) is identical to the emergency
call number of the recognized area.
In case that the phone number (`112`) is identical to the emergency
call number of the recognized area, it is called as it is, while,
in case that the phone number (`112`) is not identical to the emergency
call number of the recognized area, the phone number (`112`) is
replaced with an emergency phone number of the corresponding area
provided by the mapping table, thereby trying to make an emergency
call.
The mobile phone user may store a phone number for an emergency
call in a memory region of the mobile phone by using the function
keys provided to the mobile phone, so that he or she can try to
make an emergency call by operating a one-touch dial.
Recently, as an agreement has been made between service providers
to provide a roaming service to users by using a system of a different
communication providers, a communication area of a mobile phone
is gradually extended from a domestic communication area to an international
communication service area. Accordingly, with the mobile phone registered
in a domestic area, the user can be provided with the same communication
service even in a foreign country.
Therefore, in case that the user wants to make an emergency call
in a foreign country with the mobile phone registered in his or
her own country, the user should be aware of the emergency phone
number of the country or the area that he or she wants to stay and
use his or her mobile phone, or the user should store the emergency
phone number in the mobile phone in advance.
In this respect, however, in case that the user goes to a foreign
country for a travel or a for a business trip, it is not easy for
the user to be aware of an emergency phone number of the foreign
country. Besides a special occasion, for most users, it is hardly
expected for them to know the emergency phone number of the foreign
country or to store the emergency phone number in a memory unit
of the mobile phone.
Therefore, in the past, unless the user is aware of the emergency
phone number of the foreign country where he or she stays and uses
use a mobile phone, or unless the user is aware of a one-touch dial
number or its manual, the user can not use the emergency call or
time for calling an emergency call is delayed.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a method
for transmitting an emergency call of a mobile phone which is capable
of making an emergency call promptly in occurrence of emergency
situation.
Another object of the present invention is to provide a method
for transmitting an emergency call of a mobile phone which is capable
of automatically making an emergency call by having an additional
key for an emergency call.
To achieve these and other advantages and in accordance with the
purpose of the present invention, as embodied and broadly described
herein, there is provided a method for transmitting an emergency
call of a mobile phone including the steps of: receiving position
recognition information from a base station via a forward channel
in roaming a mobile terminal; varying a search position on an emergency
call mapping table previously stored in a memory according to the
received position recognition information; and transmitting a call
by a phone number set on the varied search position when an emergency
call is inputted.
To achieve the above objects, there is also provided a method for
transmitting an emergency call of a mobile phone including the steps
of: updating and storing position recognition information received
from a base station in a memory; comparing the position recognition
information stored in the memory and the position recognition information
pre-set in the mapping table to recognize an emergency call number;
and trying to transmit an emergency call by using the recognized
emergency call number.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are included to provide a further
understanding of the invention and are incorporated in and constitute
a part of this specification, illustrate embodiments of the invention
and together with the description serve to explain the principles
of the invention.
In the drawings:
FIG. 1 illustrates a general mobile phone (mobile terminal).
FIG. 2 illustrates a mapping table storing MCC and emergency phone
numbers by countries adopted in the present invention;
FIG. 3 is a flow chart of a process of updating and storing an
MCC in a method for transmitting an emergency call of a mobile phone
in accordance with a first embodiment of the present invention;
FIG. 4 is a flow chart of a process of transmitting an emergency
call in the method for transmitting an emergency call of a mobile
phone in accordance with the first embodiment of the present invention;
FIG. 5 is a flow chart of a process of updating and storing an
MCC in a method for transmitting an emergency call of a mobile phone
in accordance with a second embodiment of the present invention;
FIG. 6 is a flow chart of a process of transmitting an emergency
call in the method for transmitting an emergency call of a mobile
phone in accordance with the second embodiment of the present invention;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the preferred embodiments
of the present invention, examples of which are illustrated in the
accompanying drawings.
In the present invention, a key for transmitting an emergency call
is additionally designated in a mobile phone or a specific key,
i.e., number `9` key (generally it is displayed in a red color)
is designated for a one-touch key, thereby making an emergency call.
Therefore, the method for transmitting of an emergency call of a
mobile phone is operable by software, without requiring any additional
element in terms of hardware.
In addition, as shown in FIG. 2, the mapping table including the
MCCs and emergency call numbers by countries is stored in the memory
region of the mobile phone. Accordingly, an worldwide database of
emergency call numbers can be constructed by corresponding emergency
call number used by countries or areas to the MCC, that is, a country
code, by using the mapping
Method for transmitting an emergency call of a mobile phone will
now be described in detail.
When the mobile phone is first powered-up, the mobile phone receives
a pilot channel, synchronous channel and a paging channel via a
forward channel from a base station, and in this state, the mobile
phone receives an extended system parameters message (ESPM) among
overhead messages of the paging channel. The ESPM includes a field
having the MCC (Mobile Country Code) values, so that the mobile
phone stores the MCC field values upon receipt of the ESPM.
The paging channel can be largely divided into an overhead message
transmitted to every mobile phone in a service area and a personal
station directed message transmitted to a specific mobile phone.
The overhead message includes information related to connection
of a mobile station, frequency information of a base station, information
on international roaming and information on neighboring base station.
The personal station directed message includes a message for paging,
a command and a channel allocation message.
And, the mobile phone includes a first register storing an inherent
MCCp and a second register for storing the MCCs transmitted through
the ESPM. Accordingly, the mobile phone stores the initial data
transmitted from the base station in the MCCs, and compares it with
a data periodically transmitted from a base station, to thereby
update the data.
FIG. 3 is a flow chart of a process of updating and storing an
MCC in a method for transmitting an emergency call of a mobile phone
in accordance with a first embodiment of the present invention and
FIG. 4 is a flow chart of a process of transmitting an emergency
call in the method for transmitting an emergency call of a mobile
phone in accordance with the first embodiment of the present invention.
With reference to FIG. 3, when the overhead message is received
from the base station, a mobile station modem (MSM) of the mobile
phone updates the MCCs value of the second register whenever a new
ESPM is received (S10.about.S12).
In a state that the second MCCs is stored in the second register,
when an emergency key provided with the mobile phone is depressed
by the user or the number `9 key` is depressed for a long time by
the user, to make an emergency call (S20), as shown in FIG. 4, the
MSM recognizes that.
Upon recognizing the emergency call transmission, the MSM sequentially
searches the mapping table as shown in FIG. 2 to find out an MCCm
identical to the MCCs stored in the second register (S21, S22).
And then, when an MCCm identical to the MCCs is searched, the MSM
read out an emergency call number corresponding to the MCCm from
the mapping table, attaches the read emergency call number to a
destination number field of the message to be transmitted and tries
to make an emergency call (S23, 24).
FIG. 5 is a flow chart of a process of updating and storing an
MCC in a method for transmitting an emergency call of a mobile phone
in accordance with a second embodiment of the present invention,
and FIG. 6 is a flow chart of a process of transmitting an emergency
call in the method for transmitting an emergency call of a mobile
phone in accordance with the second embodiment of the present invention
With reference to FIG. 5, when a new ESPM is received, the MSM
stores the MCCs in the second register (S30.about.S32). At the same
time, the MSM searches an MCCm identical to the MCCs from the mapping
table and stores its emergency call number corresponding to the
searched MCCm in a phone book (S33). And then, the MSM links a read
address of the phone book storing the emergency call number to the
emergency call key or to `9 key` (S34). That is, in case of using
the `9 key` as a one-touch dial, the emergency call number is stored
in the address `9` of the phone book.
Accordingly, as shown in FIG. 6, when the one-touch dial, the `9`
key` is depressed by the user (S40), the emergency call number stored
in the address `9` of the phone book is read and making an emergency
call is automatically tried (S41, S42).
As so far described, according to the method for transmitting an
emergency call of a mobile phone of the present invention, after
the MCCm identical to the MCCs provided from the base station is
searched, the emergency call number corresponding to the searched
MCCm is read out from the mapping table, thereby trying to making
an emergency call.
In addition, according to the method for transmitting an emergency
call of a mobile phone of the present invention, after the MCCm
identical to the MCCs provided from the base station is searched,
the emergency call number corresponding to the searched MCCm is
stored in the phone book. And then, the read address of the phone
book in which the emergency call number has been stored is linked
to the emergency calling key or `9` key.
Accordingly, even though the user is not aware of the emergency
call number of a country or an area where he uses his mobile phone
to make an emergency call or even though he or she is not aware
of a one-touch dial number or a manual for making a call, the user
can easily make an emergency call.
Moreover, by linking the read address of the phone book, in which
the emergency call number has been stored, to the key for making
an emergency call, making an emergency call can be promptly performed
automatically by one-time key manipulation.
As the present invention may be embodied in several forms without
departing from the spirit or essential characteristics thereof,
it should also be understood that the above-described embodiments
are not limited by any of the details of the foregoing description,
unless otherwise specified, but rather should be construed broadly
within its spirit and scope as defined in the appended claims, and
therefore all changes and modifications that fall within the meets
and bounds of the claims, or equivalence of such meets and bounds
are therefore intended to be embraced by the appended claims.
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