DESCRIPTION
TITLE OF THE INVENTION: COMMUNICATION SYSTEM
5 Technical Field
[0001] The present invention relates to a communication system, communication device and
communication method performing communication, in particular relating to a communication
system, communication device and communication method performing communication using
mobile terminals.
1 0 Background Art
[0002] Recently, mobile terminals are a must item of everyday life, and many of citizens have
or possess those.
[0003] For this reason, it was believed that if a disaster such as an earthquake occurs, it would
be easy to confirm survival of inhabitants in the affected area by calling their mobile terminals
15 own or sending emails to their mobile terminals.
[0004] However, in reality, once a disaster such as a large-scale earthquake occurred, such a
situation occurred in which mobile terminals became hard to connect due to destruction and
submersion of the facilities of communications such as base stations and others or due to
restriction on phone calls. As a result, despite the fact that many of the dwellers fortunately had
20 mobile terminals, there occurred many cases in which they could not be contacted through the
their mobile terminals and it became difficult to confirm whether or not they were alive.
[0005] On the other hand, there has been a disclosed technology (see Patent Document 1, for
example) in which a relay device for relaying radio waves between mobile terminals and a base
station is attached to a balloon so that the relay device can rise and float in an area where use of a
25 mobile terminal is difficult, whereby mobile terminals can obtain communication by way of the
floating relay device.
Related Art Documents
Non-Patent Document
[0006]
30 Patent Document 1 : JP2007-184878A
Summary of the Invention
Problems to be solved by the Invention
[0007] It is possible to apply the above technology disclosed in Patent Document 1 to the
aforementioned affected area. However, when external communication device itself which- is a .
base station or the like and the communication network itself have become unworkable, it is
impossible to establish communication with mobile terminals, hence the above technology
entails the problem in which it is difficult to confirm the status of the disaster victim.
[0008] The object of the present invention is to provide a communication system,
communication device and communication method that solve the above problem.
Means for Solving the Problems
[0009] A communication system of the present invention is a communication system including
a mobile terminal, a first communication device and a second communication device, and
characterized in that
the mobile terminal, when receiving a signal transmitted from the first communication
device for requesting mobile terminal ID information that has been allotted beforehand to the
mobile terminal so that the mobile terminal can be identified, transmits the mobile terminal ID
information to the first communication device,
the first communication device is deployed at a position of a predetermined height, the
first communication device transmits a signal, requesting the mobile terminal ID information, to
the radio communication coverage area and transmits the mobile terminal ID information
transmitted from the mobile terminal to the second communication device, and
the second communication device displays the mobile terminal ID information transmitted
from the first communication device.
[0010] A communication system including a mobile terminal, an antenna and a communication
device, is characterized in that
the mobile terminal, when receiving a signal, transmitted from the communication device
by way of the antenna, for requesting mobile terminal ID information that has been allotted
beforehand to the mobile terminal so that the mobile terminal can be identified, transmits the
mobile terminal ID information to the communication device by way of the antenna,
the antenna is deployed at a position of a predetermined height,
the communication device transmits a signal, requesting the mobile terminal ID
information, to the radio communication coverage area of the antenna by way of the antenna and
displays the mobile terminal ID information transmitted from the mobile terminal by way the
antenna.
[0011] A communication device of the present invention is a communication device deployed
at a position of a predetermined height, and comprises:
a mobile terminal interface portion that transmits a signal requesting mobile terminal ID
information that has been allotted beforehand to a mobile terminal so that the mobile terminal
I 4
@ can be identified, to the radio communication coverage area of the communication device, and
a device interface portion that, when the mobile terminal ID information is transmitted
from the mobile terminal, transmits the mobile terminal ID information to a device connected to
the communication device.
5 [OO 121 A communication device comprises:
an interface portion that, when mobile terminal ID information that has been allotted
beforehand to a mobile terminal existing in the radio communication coverage area of a device
connected thereto is transmitted from the device, receives the mobile terminal ID information;
and,
10 a display portion that displays the mobile terminal ID information which the interface
portion has received.
[0013] A communication device connected to an antenna, comprises:
an interface portion that transmits a signal, requesting mobile terminal ID information
which has been allotted beforehand to a mobile terminal so that the mobile terminal can be
15 identified, to the radio communication coverage area of the antenna and that, when the mobile
terminal ID information is transmitted from the mobile terminal by way of the antenna, receives
the mobile terminal ID information; and,
a display portion that displays the mobile terminal ID information which the interface
portion has received.
20 [0014] A communication method of the present invention is a communication method in a
communication system including a mobile terminal, a first communication device and a second
communication device, and comprises:
a step for the first communication device deployed at a position of a predetermined height
to transmit a signal, requesting mobile terminal ID information that has been allotted beforehand
25 to the mobile terminal so that the mobile terminal can be identified, to the radio communication
coverage area of the first communication device;
a step for the mobile terminal to transmit the mobile terminal ID information to the first
communication device when the mobile terminal receives the signal requesting the mobile
terminal ID information, transmitted from the first communication device;
3 0 a step for the first communication device to transmit the mobile terminal ID information
transmitted from the mobile terminal to the second communication device; and,
a step for the second communication device to display the mobile terminal ID information
transmitted from the first communication device.
[0015]. A communication method in a communication system including a mobile terminal-and
' a communication device, comprises:
a step for the communication device to transmit a signal, requesting mobile terminal ID
information that has been allotted beforehand to the mobile terminal so that the mobile terminal
can be identified, to the radio communication coverage area of an antenna connected to the
5 communication device and deployed at a position of a predetermined height, by way of the
antenna;
a step for the mobile terminal to transmit the mobile terminal ID information to the
communication device by way of the antenna when the mobile terminal receives the signal
requesting for the mobile terminal ID information, transmitted from the communication device
10 by way of the antenna; and,
a step for the communication device to display the mobile terminal ID information
transmitted from the mobile terminal by way of the antenna.
Effect of the Invention
[0016] In the present invention, it is possible to easily confirm survival of disaster victims.
15 Brief Description of the Drawings
[00 171
[FIG. 11 A diagram showing the first exemplary embodiment of a communication system of
the present invention.
[FIG. 21 A block diagram showing one example of the internal configuration of the femtobase
20 station shown in FIG. 1.
[FIG. 31 A diagram showing one example of the internal configuration of the public aid
communication device shown in FIG. 1.
[FIG. 41 A sequence diagram for illustrating a process by which the public aid communication
device displays mobile terminal ID information, in the commutation method in the configuration
25 shown in FIG. 1.
[FIG. 51 A diagram showing one example of mobile terminal ID information displayed on the
display portion shown in FIG. 3.
[FIG. 61 A diagram showing one display example in the display portion shown in FIG. 3, on
which a map showing positions of mobile terminals is displayed.
30 [FIG. 71 A sequence diagram for illustrating a process carried out when a mobile terminal has
made a call, in the commutation method in the configuration shown in FIG. 1.
[FIG. 81 A diagram showing one display example in the display portion shown in FIG. 3, on
which the mobile terminal ID information of a mobile terminal that has made a call is displayed
in a distinguishable manner. -
' [FIG. 91 A diagram showing one display example when a message transmitted from a mobile
terminal is displayed on a display portion.
[FIG. 101 A sequence diagram for illustrating a process carried out when a public aid
communication device makes a call to a mobile terminal of mobile terminal ID information
5 displayed on the display portion, in the commutation method in the configuration shown in FIG.
1.
[FIG. 1 11 A diagram showing one example of the configuration shown in FIG. 1, in which a
rescue terminal is provided.
[Fig. 121 A sequence diagram for illustrating a communication method in the configuration
10 shown in FIG. 1 1.
[FIG. 131 A diagram showing the second exemplary embodiment of a communication system
of the present invention.
[FIG. 141 A diagram showing the third exemplary embodiment of a communication system of
the present invention.
15 [FIG. 151 A diagram showing one example of the internal configuration of the public aid
communication device shown in FIG. 14.
[FIG. 161 A sequence diagram for illustrating a process by which the public aid
communication device displays mobile terminal ID information, in the commutation method in
the configuration shown in FIG. 14.
20 [FIG. 171 A sequence diagram for illustrating a process carried out when a mobile terminal has
made a call, in the commutation method in the configuration shown in FIG. 14.
[FIG. 181 A sequence diagram for illustrating a process carried out when a public aid
communication device makes a call to the mobile terminal of mobile terminal ID information
displayed on the display portion, in the commutation method in the configuration shown in FIG.
25 1.
[FIG. 191 A diagram showing one example of the configuration shown in FIG. 14, in which a
rescue terminal is provided.
[FIG. 201 A sequence diagram for illustrating a communication method in the configuration
shown in FIG. 19.
30 [FIG. 211 A diagram showing the fourth exemplary embodiment of a communication system of
the present invention.
Configurations for Carrying Out the Invention
[0018] Next, the exemplary embodiments of the present invention will be described with
reference to the drawings.
(The First Exemplary Embodiment)
FIG. 1 is a diagram showing the first exemplary embodiment of a communication system
of the present invention.
[0019] This configuration is formed of mobile terminal 100, femtobase station 200 and public
aid communication device 300, as shown in FIG. 1.
[0020] Mobile terminal 100 is a typically used radio communication device which the user can
carry while moving. Further, when having received a signal that requests mobile terminal ID
information from femtobase station 200, mobile terminal 100 transmits the mobile terminal ID
information to femtobase station 200. Herein, the mobile terminal ID information is
information that has been allotted beforehand to mobile terminal 100 so that the mobile terminal
100 can be identified. The mobile terminal ID information may be IMEI (International Mobile
Equipment Identity), serial number, telephone number or SIM (Subscriber Identity module)-ID
(Identification), as long as it can identi@ mobile terminal 100.
[0021] Femtobase station 200 is a first communication device that is attached to balloon 400
which is a floating body and deployed at a predetermined height. Further, femtobase station
200 forms femtocell 500 as an area where femtobase station 200 can permit radio
communication. It should be noted that another radio base station may be used as femtobase
station 200. Further, this balloon 400 is an air balloon which is filled with a gas that is lighter
than the ambient air, and is fixed by a rope 700 so that the balloon can be kept floating at a
predetermined height (e.g., about 40 m to 60 m) above the ground. Though it is preferable that
this height be as high as possible, it is necessary to specify the height within the range of other
laws and regulations. Further, when balloon 400 has a diameter of about 2 m and is filled with
helium gas, it is possible to fill the balloon with helium gas in a few minutes and make the
balloon float in about 12 hours. Moreover, since helium gas is a nonflammable gas, it is safe.
[0022] The size (radius) of femtocell 500 can be varied by adjusting the angle of radiation and
the power of the radio signal emitted from femtobase station 200.
[0023] Further, femtobase station 200 is connected to public communication aid device 300 via
communication cable 600 (e.g., Ethernet (registered trade name) cable). This communication
cable 600 is a cable that can supply electric power from public aid communication device 300 to
femtobase station 200.
[0024] FIG. 2 is a block diagram showing one example of the internal configuration of
femtobase station 200 shown in FIG. 1.
[0025] Femtobase station 200 shown in FIG. 1 includes mobile terminal interface portion 201
and device interface portion 202, as shown in FIG. 2.
[0026] Mobile terminal interface portion 201 transmits radio signals to and receives radio
signals from mobile terminal 100 that is present in femtocell 500. Mobile terminal interface
portion 201 also transmits a signal, requesting mobile terminal ID information, to femtocell 500.
[0027] Device interface portion 202 transmits signals to and receives signals from public aid
communication device 300 via communication cable 600. When receiving mobile terminal ID
information from mobile terminal 100, device interface portion 202 transmits the mobile
terminal ID information to public aid communication device 300.
LO0281 Public aid communication device 300 is the second communication device deployed on
the ground. Public aid communication device 300 is connected to femtobase station 200 via
communication cable 600. Herein, the power source to public aid communication device 300
may use an external power supply, independent power generator, storage battery, solar battery,
or the like. As long as public aid communication device 300 has the functions described as
follows, the device may be used for any purpose.
[0029] FIG. 3 is a diagram showing one example of the internal configuration of public aid
communication device 300 shown in FIG. 1.
[0030] As shown in FIG. 3, public aid communication device 300 shown in FIG. 1 includes
interface portion 301 and display portion 302.
[003 11 Interface portion 301 transmits signals to and receives signals from femtobase station
200 via communication cable 600. When mobile terminal ID information is transmitted from
femtobase station 200, interface portion 301 receives the mobile terminal ID information.
[0032] Display portion 302 displays the mobile terminal ID information received by interface
portion 30 1.
[0033] Next, the communication method in the configuration shown in FIG. 1 will be
described.
[0034] To begin with, in the communication method in the configuration shown in FIG. 1, a
process to be implemented when public aid communication device 300 displays mobile terminal
ID information will be described.
[0035] FIG. 4 is a sequence diagram for illustrating the process by which public aid
communication device 300 displays mobile terminal ID information, in the commutation method
in the configuration shown in FIG. 1.
[0036] First, as femtobase station 200 is activated, a radio signal requesting mobile terminal ID
information is transmitted from mobile terminal interface portion 201 of femtobase station 200 to
femtocell 500, at Step 1.
[0037] Then, at Step 2, mobile terminal 100 having received this radio signal transmits mobile
terminal ID information. These Steps 1 and 2 are also carried out in the sequence of an
ordinary position registering process.
[0038] When femtobase station 200 receives the mobile terminal ID information transmitted
from mobile terminal 100, the received mobile terminal ID information is transmitted from
device interface portion 202 to public aid communication device 300 via communication cable
600, at Step 3.
COO391 When interface portion 301 of public aid communication device 300 receives the
mobile terminal ID information transmitted from femtobase station 200, the received mobile
terminal ID information is displayed on display portion 302 at Step 4.
[0040] FIG. 5 is a diagram showing one example of mobile terminal ID information displayed
on display portion 302 shown in FIG. 3.
[0041] As shown in FIG. 5, the received mobile terminal ID information is displayed as the
mobile terminal ID information of mobile terminals that are present in femtocell 500, on display
portion 302. For example, as shown in FIG. 5, mobile terminal ID information of three mobile
terminals ("A0000000 1 ", "B 10000000" and "C 12345678") is displayed on display portion 302,
whereby the presence of these three mobile terminals in femtocell 500 can be detected.
[0042] Further, when mobile terminal 100 has a function of obtaining positional information
that indicates the current position of mobile terminal 100 (e.g., GPS (Global Positioning System)
function), mobile terminal 100 may acquire positional information using this function and
transmit the acquired positional information together with the mobile terminal ID information to
public aid communication device 300 via femtobase station 200. In this case, public aid
communication device 300 receives the positional information of mobile terminal 100 and
displays the position information on display portion 302, so that the current position of mobile
terminal 100 can be known at public aid communication device 300.
[0043] FIG. 6 is a diagram showing one display example in display portion 302 shown in FIG.
3, on which a map showing positions of mobile terminals is displayed.
[0044] As shown in FIG. 6, the positions of the mobile terminals numbered 1 to 3 in FIG. 5,
whose presence has been confirmed, are indicated on the map. This display makes it possible
to recognize where each mobile terminal, whose presence has been confirmed, is located and
promptly go to rescue the person who carries the mobile terminal.
[0045] Next, in the communication method in the configuration shown in FIG. 1, a process
carried out when mobile terminal 100 has made a call will be described.
[0046] FIG. 7 is a sequence diagram for illustrating a process carried out when mobile terminal
100 has made a call, in the commutation method in the configuration shown in FIG. 1.
[0047] When mobile terminal 100 detects a predetermined operation at Step 1 1, mobile
terminal 100 makes a call at Step 12.
[0048] Herein, a predetermined operation may be any action such that, for instance, the user
holding mobile terminal 100 shakes mobile terminal 100, unfolds folding type mobile terminal
100, touches the display of mobile terminal 100, taps mobile terminal 100 a predetermined
number of times, grips mobile terminal 100, presses down any one of multiple button keys of
mobile terminal 100, as long as the action can be detected by the sensors or button keys provided
for mobile terminal 100.
[0049] When the call from mobile terminal 100 is detected by mobile terminal interface
portion 201 of femtobase station 200, a notice indicating that a call has been made is given from
device interface portion 202 of femtobase station 200 to public aid communication device 300
via communication cable 600 at Step 13.
[0050] When the notice indicating that a call has been made is received at interface portion 301
of public aid communication device 300, at Step 14 the mobile terminal ID information of the
mobile terminal that has made the call is displayed on display portion 302 in a distinguishable
manner, from among the mobile terminal ID information being displayed on display portion 302.
[005 11 FIG. 8 is a diagram showing one display example in display portion 302 shown in FIG.
3, on which the mobile terminal ID information of a mobile terminal that has made a call is
displayed in a distinguishable manner.
[0052] As shown in FIG. 8, from among the mobile terminals whose presence has been
confirmed, the mobile terminal ID information of the mobile terminal a call has been made is
displayed on display portion 302 in a distinguishable manner. The distinguishable indication
may be displayed by lighting up and lighting out the mark corresponding to the mobile terminal
ID information or making the display color different from that of other mobile terminal ID
information, or flashing the mobile terminal ID information itself. That is, the indication may
be any form as long as the operator of public aid communication device 300 can recognize it.
[0053] Then, at Step 15, telephonic communication is established between public aid
communication device 300 and the mobile terminal 100 that has made a call.
[0054] Here, if a normal procedure of making a call (e.g., calling by inputting the telephone
number of a friend) has been defined as the aforementioned "predetermined operation", mobile
terminal 100 can be connected to public aid communication device 300 wherever the person who
carries mobile terminal 100 makes a call. Thus, it is possible to perform a prompt rescue
operation.
[0055] It is possible to provide such a configuration in which when a message such as an email
is transmitted from mobile terminal 100, the message is forwarded from femtobase station 200 to
public aid communication device 300 so that the message is displayed on display portion 302.
[0056] FIG. 9 is a diagram showing one display example when a message transmitted from
mobile terminal 100 is displayed on display portion 302.
[0057] As shown in FIG. 9, from among the mobile terminals whose presence has been
confirmed, a message is displayed on display portion 302 in association with the mobile terminal
ID information of the mobile terminal from which the message has been transmitted.
[0058] Next, in the communication method in the configuration shown in FIG. 1, the process
carried out when public aid communication device 300 makes a call to a mobile terminal of the
mobile terminal ID information displayed on display portion 302 will be described.
[0059] FIG. 10 is a sequence diagram for illustrating a process carried out when public aid
communication device 300 makes a call to a mobile terminal that has the mobile terminal ID
information displayed on display portion 302, in the commutation method in the configuration
shown in FIG. 1.
[0060] In a state where mobile terminal ID information whose presence has been confirmed is
displayed on display portion 302, when public aid communication device 300 receives a
predetermined operation that designates mobile terminal ID information at Step 21, public aid
communication device 300 makes a call to the designated mobile terminal at Step 22.
[0061] Herein, designation by a predetermined operation may be performed by touching one
items of ID information from among a plurality of mobile terminal ID information items being
displayed with a finger or the like to make a designation when, for example, display portion 302
has a touch panel function, or by moving a cursor or the like to make a choice. That is,
designation by a predetermined operation is possible as long as public aid communication device
300 can recognize the ID information on one selected mobile terminal.
[0062] Then, at Step 23, femtobase station 200 makes a call to mobile terminal 100 designated
by public aid communication device 300. At Step 24, telephonic communication is established
between public aid communication device 300 and mobile terminal 100 by way of femtobase
station 200.
[0063] This telephonic communication is a so-called intra-call like a communication using
transceivers, which can be established in a closed area inside femtocell 500 without using an
external network. As a result, even if external networks and external communication devices
have broken down, this configuration makes it possible to establish communication within the
area.
[OM41 Other than public aid communication device 300, the device that enables
communication with mobile terminal 100 may include a rescue terminal.
[0065] FIG. 1 1 is a diagram showing one example of the configuration shown in FIG. 1, in
which a rescue terminal is provided.
[0066] As shown in FIG. 1 1, in this configuration rescue terminal 1 10 is added to the
configuration shown in FIG. 1.
COO671 Rescue terminal 1 10 is a mobile communication device that can perform radio
communication with femtobase station 200.
[0068] In this configuration, when the mobile terminal ID information displayed on display
portion 302 is selected by a predetermined operation, public aid communication device 300
makes a call to the mobile terminal that has transmitted the selected mobile terminal ID
information, to thereby relay telephonic communication between rescue terminal 1 10 and mobile
terminal 100 by way of femtobase station 200.
[0069] Next, the communication method in the configuration shown in FIG. 11 will be
described.
[0070] Fig. 12 is a sequence diagram for illustrating a communication method in the
configuration shown in FIG. 1 1.
[0071] In a state where mobile terminal ID information for which existence has been
confirmed is displayed on display portion 302, when public aid communication device 300
receives a predetermined operation that designates mobile terminal ID information at Step 3 1,
public aid communication device 300 makes a call to the designated mobile terminal at Step 32.
[0072] Herein, designation by a predetermined operation may be the same as that described
with FIG. 10.
[0073] Then, at Step 33, femtobase station 200 makes a call to the mobile terminal 100
designated by public aid communication device 300. At Step 34, public aid communication
device 300 relays communication between rescue terminal 1 10 and mobile terminal 100 by way
of femtobase station 200 so as to establish telephonic communication between rescue terminal
1 10 and mobile terminal 100.
[0074] Instead of public aid communication device 300 making a call to mobile terminal 100
to establish telephonic communication as stated above, rescue terminal 1 10 may make a call to
mobile terminal 1 10 so as to establish telephonic communication between rescue terminal 1 10
and mobile terminal 100. In this case, when rescue terminal 1 10 makes a call request to public
aid communication device 300, the requested public aid communication device 300 makes a call
to mobile terminal 100 for which existence has been confirmed (to an arbitrary terminal or a
terminal that has been seIected by a touch-panel function or the like if there are-some mobile
terminals), to thereby establish telephonic communication between rescue terminal 1 10 and
mobile terminal 100. Alternatively, public aid communication device 300 first provides
notification that there is a mobile terminal 100 whose presence has been conformed, or notifies
the mobile terminal ID information that identifies mobile terminal 100 whose presence has been
confirmed, to rescue terminal 1 10, and when rescue terminal 1 10, in response to the notification,
makes a call request to public aid communication device 300, telephonic communication
between rescue terminal 1 10 and mobile terminal 100 may be established by making a call in
accordance with that request.
[0075] This telephonic communication is a so-called intra-call like a communication that uses
transceivers, which, can be established in a closed area inside femtocell 500 without use of an
external network. As a result, similarly to the aforementioned communication between public
aid communication device 300 and mobile terminal 100, even if external networks and external
communication devices have broken down, this configuration makes it possible to establish
communication within the area.
[0076] Further, use of such rescue terminal 110 makes it possible for the rescuer to find a
disaster victim who cannot move at all by moving around while maintaining connection with the
victim.
[0077] (The Second Exemplary Embodiment)
FIG. 13 is a diagram showing the second exemplary embodiment of a communication
system of the present invention.
[0078] As shown in FIG. 13, this configuration is formed of mobile terminal 100, femtobase
station 200 and public aid communication device 300.
[0079] Mobile terminal 100 is the same one as that of the first exemplary embodiment.
[0080] The internal configuration and functions of femtobase station 200 are the same as those
in the first exemplary embodiment. Femtobase station 200 is attached to support 71 0 mounted
on vehicle 41 0 so as to be positioned at a predetermined height. This may be set at any height
as long as vehicle 41 0 and support 7 10 will not fall down, but the height needs to be specified
conforming to other laws and rules. The structure and material of support 71 0 are not
particularly limited. For example, the material of support 71 0 may be iron or aluminum. It is
preferable that support 71 0 can be expanded and contracted.
[008 11 The internal configuration and functions of public aid communication device 300 are
the same as those in the first exemplary embodiment. Further, public aid communication
device 300 is mounted on vehicle 410. The power source for public aid communication device
300 may be an external power supply, independent power generator, storage battery, solar
i battery, etc., or may be supplied from the battery of vehicle 410, or the like.
[0082] Since the communication method in the configuration shown in FIG. 13 is the same as
that in the first exemplary embodiment, description is omitted herein.
(The Third Exemplary Embodiment)
5 FIG. 14 is a diagram showing the third exemplary embodiment of a communication
system of the present invention.
[0083] This configuration is formed of mobile terminal 100, antenna 210 and public aid
communication device 3 10, as shown in FIG. 14.
[0084] Mobile terminal 100 is a typically used radio communication device which the user can
10 carry while moving. Further, when having received a signal that requests mobile terminal ID
information from public aid communication device 3 10 by way of antenna 2 10, mobile terminal
100 transmits the mobile terminal ID information to public aid communication device 3 10 by
way of antenna 210. Herein, the mobile terminal ID information is information that has been
allotted beforehand to mobile terminal 100 so that the mobile terminal 100 can be identified.
15 The mobile terminal ID information may be, for example, a serial number or SIM-ID.
[0085] Antenna 2 1 0 performs radio communication with mobile terminal 100 residing in cell
5 10, which is the radio communication coverage area of antenna 2 10. Antenna 2 10 also
performs wired communication with public aid communication device 3 10, using RF (Radio
Frequency) cable 6 10. For this purpose, antenna 2 10 has a function of conversion between
20 radio signals and cable signals. Antenna 210 is attached to balloon 400 as a floating body, and
is deployed at a predetermined height. This balloon 400 is the same one as the one that used in
the first embodiment.
[0086] The size (radius) of cell 5 10 is variable by adjusting the angle of radiation and the
power of radio signals radiated from antenna 21 0.
25 [0087] Public aid communication device 3 10 is a communication device deployed on the
ground and connected to antenna 2 10 via RF cable 6 10. Herein, the power source to public aid
communication device 3 10 may use an external power supply, independent power generator,
storage battery, solar battery, or the like. As long as public aid communication device 3 10 has
the functions described as follows, the device may be used for any purpose.
30 [0088] FIG. 15 is a diagram showing one example of the internal configuration of public aid
communication device 3 10 shown in FIG. 14.
[0089] As shown in FIG. 15, public aid communication device 3 10 shown in FIG. 14 includes
interface portion 3 1 1 and display portion 3 12.
[0090] Interface portion 3 1 1 transmits a signal requesting mobile terminal ID information that
l 0 has been allotted beforehand to the mobile terminal to make the mobile terminal identifiable.
Further, when mobile terminal ID information is transmitted from mobile terminal 1 10 via
antenna 21 0, interface portion 3 1 1 receives the mobile terminal ID information.
[0091] Display portion 3 12 displays the mobile terminal ID information received by interface
5 portion 31 1.
[0092] Next, the communication method in the configuration shown in FIG. 14 will be
described.
[0093] To begin with, in the communication method in the configuration shown in FIG. 14, a
process to be implemented when public aid communication device 3 10 displays mobile terminal
10 ID information will be described.
[0094] FIG. 16 is a sequence diagram for illustrating the process by which public aid
communication device 3 10 displays mobile terminal ID information, in the commutation method
in the configuration shown in FIG. 14.
[0095] First, as public aid communication device 3 10 is activated, a radio signal, that requests
15 mobile terminal ID information, is transmitted from mobile terminal interface portion 3 1 1 of
public aid communication device 3 10 to cell 5 10, via RF cable 6 10 and antenna 2 10, at Step 4 1
and Step 42.
[0096] Then, at Step 43, mobile terminal 100 that received this radio signal transmits mobile
terminal ID information. These Steps 41 to 43 are also carried out in an ordinary position
20 registering process sequence.
[0097] When public aid communication device 3 10 receives the mobile terminal ID
information transmitted from mobile terminal 100 via antenna 2 10 at interface portion 3 1 1 at
Step 44, the received mobile terminal ID information is displayed on display portion 3 12 at Step
45.
25 [0098] The display in display portion 3 12 may be the same as that illustrated in the first
exemplary embodiment.
[0099] Further, similarly to the first exemplary embodiment, when mobile terminal 100 has a
function for obtaining positional information that indicates the current position of mobile
terminal 100 (e.g., GPS function), mobile terminal 100 may acquire positional information using
30 this function and transmit the acquired position information together with the mobile terminal ID
information to public aid communication device 3 10 via antenna 2 10. In this case, public aid
communication device 3 10 receives the positional information of mobile terminal 100 and
displays the position information on display portion 3 12, so that the current position of mobile
terminal 100 can be known at public aid communication device 3 10. The display of the map or
the like based on this positional information may be done in the same manner as in the first
exemplary embodiment.
[0100] Next, in the communication method in the configuration shown in FIG. 14, a process
carried out when mobile terminal 100 has made a call will be described.
5 [O 10 11 FIG. 17 is a sequence diagram for illustrating a process carried out when mobile
terminal 100 has made a call, in the commutation method in the configuration shown in FIG. 14.
[0102] When mobile terminal 100 detects a predetermined operation at Step 5 1, mobile
terminal 100 makes a call at Step 52.
[0103] This predetermined operation is the same as that described in the first exemplary
10 embodiment.
[O 1041 When a call from mobile terminal 100 has been detected at interface portion 3 1 1 by
way of antenna 210 and RF cable 610 at Step 53, the mobile terminal ID information of the
mobile terminal that has made a call is displayed on display portion 3 12 in a distinguishable
manner, from among the mobile terminal ID information being displayed on display portion 3 12,
15 at Step 54.
[0105] The display in display portion 3 12 may be the same as that illustrated in the first
exemplary embodiment.
[0106] Then, at Step 55, telephonic communication is established between public aid
communication device 3 10 and the mobile terminal 100 that has made a call.
20 [0107] Here, if the normal procedures for making a call (e.g., calling by inputting the telephone
number of a fiend) has been defined as the aforementioned "predetermined operation", mobile
terminal 100 can be connected to public aid communication device 3 10 from wherever the
person who carries mobile terminal 100 makes the call. Thus, it is possible to perform a prompt
rescue operation.
25 [0108] When a message such as an email is transmitted from mobile terminal 100, the message
may be forwarded via antenna 2 10 and RF cable 6 10 to public aid communication device 3 10 so
that the message can be displayed on display portion 3 12.
[0109] The display of the message in display portion 3 12 may be the same as that illustrated in
the first exemplary embodiment.
30 [0110] Next, in the communication method in the configuration shown in FIG. 1, the process
carried out when public aid communication device 3 10 makes a call to a mobile terminal that has
the mobile terminal ID information displayed on display portion 3 12 will be described.
[Ol 1 11 FIG. 18 is a sequence diagram for illustrating the process that is carried out when public
aid communication device 3 10 makes a call to a mobile terminal that has the mobile terminal ID
0 information displayed on display portion 3 12, in the commutation method in the configuration
shown in FIG. 1.
[0112] In a state where mobile terminal ID information whose presence has been confirmed is
displayed on display portion 3 12, when public aid communication device 3 10 receives a
5 predetermined operation that designates mobile terminal ID information at Step 61, public aid
communication device 3 10 makes a call to the designated mobile terminal via antenna 21 0 at
Steps 62 and 63.
[0113] Here, designation by a predetermined operation is the same as in the first exemplary
embodiment.
10 [0114] Then, at Step 64, telephonic communication is established between public aid
communication device 3 10 and mobile terminal 100 by way of antenna 2 10.
[O 1 151 The telephonic communication is a so-called intra-call like communication using
transceivers, which can be established in a closed area inside cell 5 10 without using an external
network. As a result, even if external networks and external communication devices have
15 broken down, this configuration makes it possible to establish communication within the area.
[0116] Other than public aid communication device 3 10, the device that enables
communication with mobile terminal 100 may include a rescue terminal.
[0117] FIG. 19 is a diagram showing one example of the configuration shown in FIG. 14, in
which a rescue terminal is provided.
20 [0118] As shown in FIG. 19, in this configuration rescue terminal 1 10 is added to the
configuration shown in FIG. 14.
[O 1 191 Rescue terminal 1 10 is a mobile communication device that can perform radio
communication with antenna 2 10.
[0120] In this configuration, when the mobile terminal ID information displayed on display
25 portion 3 12 is selected by a predetermined operation, public aid communication device 3 10
makes a call to the mobile terminal that has transmitted the selected mobile terminal ID
information, to thereby relay telephonic communication between rescue terminal 1 10 and the
mobile terminal by way of antenna 2 10.
[012 11 Next, the communication method in the configuration shown in FIG. 19 will be
30 described.
[O122] FIG. 20 is a sequence diagram for illustrating a communication method in the
configuration shown in FIG. 19.
[0123] In a state where mobile terminal ID information whose presence has been confirmed is
displayed on display portion 3 12, when*public aid communication device 3 10 receives a
0 predetermined operation that designates mobile terminal ID information at Step 71, public aid
communication device 3 10 makes a call to the designated mobile terminal by way of antenna
210 at Step 72 and Step 73.
[O124] Herein, designation by a predetermined operation may be the same as described in the
5 first exemplary embodiment.
[0125] Then, at Step 74, public aid communication device 3 10 relays the call between rescue
terminal 1 10 and mobile terminal 100 by way of antenna 2 10 so that telephonic communication
between rescue terminal 1 10 and mobile terminal 100 is established.
[0126] Similarly to that described in the first exemplary embodiment, rescue terminal 1 10 may
10 make a call to mobile terminal 100 so as to establish telephonic communication between rescue
terminal 1 10 and mobile terminal 100. In this case, when rescue terminal 1 10 makes a call
request to public aid communication device 3 10, the requested public aid communication device
3 10 makes a call to mobile terminal 100 whose presence has been confirmed (to an arbitrary
terminal or a terminal that has been selected by a touch-panel function or the like if there are
15 some terminals), to thereby establish telephonic communication between rescue terminal 1 10
and mobile terminal 100. Alternatively, public aid communication device 3 10 first provides
notification that there is a mobile terminal 100 whose presence has been conformed, or notifies
the mobile terminal ID information of mobile terminal 100 whose presence has been confirmed,
to rescue terminal 1 10, and when rescue terminal 1 10 replies to the notification and makes a call
20 request to public aid communication device 3 10, telephonic communication between rescue
terminal 1 10 and mobile terminal 100 may be established by making a call in accordance with
that request.
[0127] This telephonic communication is a so-called intra-call like communication that uses
transceivers, which can be established in a closed area inside cell 5 10 without use of an external
25 network. As a result, similarly to the aforementioned communication between public aid
communication device 3 10 and mobile terminal 100, even if external networks and external
communication devices have broken down, this configuration makes it possible to establish
communication within the area.
[0128] Further, use of such rescue terminal 1 10 makes it possible for the rescuer to find a
30 disaster victim who cannot move at all by moving around whilst maintaining connection with the
victim.
[O 1291 (The Fourth Exemplary Embodiment)
FIG. 21 is a diagram showing the fourth exemplary embodiment of a communication
system of the present invention.
I ' [0130] As shown in FIG. 2 1, this embodiment is formed of mobile terminal 100, antenna 2 10
and public aid communication device 3 10.
[013 11 Mobile terminal 100 is the same one as that of the first exemplary embodiment.
[0132] The function of antenna 21 0 is the same one as that in the third exemplary embodiment.
5 Antenna 2 10 is attached to support 7 10 mounted on vehicle 4 10 so as to be positioned at a
predetermined height. This may be set at any height as long as vehicle 4 10 and support 71 0
will not fall down, but the height needs to be specified conforming to other laws and rules. The
structure and material of support 71 0 are not particularly limited. For example, the material of
support 71 0 may be iron or aluminum. It is preferable that support 71 0 can be expanded and
10 contracted.
[0133] The internal configuration and functions of public aid communication device 3 10 are
the same as those in the third exemplary embodiment. Further, public aid communication
device 3 10 is mounted on vehicle 41 0. The power source to public aid communication device
3 10 may use an external power supply, independent power generator, storage battery, solar
15 battery, etc., or may be supplied from the battery of vehicle 41 0, or the like.
[0134] Since the communication method in the configuration shown in FIG. 21 is the same as
that in the third exemplary embodiment, description is omitted herein.
[0135] Next, the actual way of using the communication system of the present invention will
be described.
20 [0136] First, one use case of the present invention in the first and third exemplary
embodiments using the above-described balloon will be described.
[0137] When communication using mobile terminals has failed because of the collapse of
external networks and communication devices, or because of the imposition of communication
restrictions due to an earthquake disaster, a balloon with a base station or an antenna attached
25 thereto is charged with gas. This gas charge is complete within some minutes.
[0138] Thereafter, the balloon full of gas is floated to a predetermined height and a public aid
communication device (femtobase station) is activated, communication between the public aid
communication device (femtobase station) and mobile terminals is implemented. Further, when
a rescue terminal exists, communication between the mobile terminal and the rescue terminal is
30 implemented. These communications do not need to connect to an external network, but are
established in a closed area inside the cell.
[0139] Accordingly, once these are activated, even if the mobile terminal that the disaster
victim possesses fails to communicate with external networks or with communication device, the
disaster victim can effectively use the mobile terminal as a rescue nieans for themselves.
Further, when a disaster victim who is unable to move because of being trapped under a
destroyed house sees the balloon that rises to a predetermined height, the disaster victim can
recognize that rescue is close and can try to operate the mobile terminal, which will contribute to
making possible a quick rescue.
[0140] Next, a use case of the present invention in the second and fourth exemplary
embodiments using the above-described vehicle will be described.
[0141] When communication using mobile terminals has failed because of the collapse of
external networks and communication devices, or because of the imposition of communication
restriction due to an earthquake disaster, a vehicle with a base station or antenna and a public aid
communication device mounted thereon is deployed to the desired location. Then, after the
vehicle is fixed at a predetermined position, the support column with the base station or antenna
attached to the front end thereof is extended to a predetermined height. Then, a public aid
communication device (femtobase station) is activated, communication between the public aid
communication device (femtobase station) and mobile terminals is implemented. Further, when
a rescue terminal exists, communication between the mobile terminal and the rescue terminal is
implemented. These communications do not need to connect to an external network, but are
established in a closed area inside the cell.
[0142] Accordingly, once these are activated, even if the mobile terminal that the disaster
victim possesses fails to communicate with external networks or communication device, the
disaster victim can effectively use the mobile terminal as a rescue means for themselves.
Further, when a conspicious symbol (e.g., flag, light and the like) is added to the base station or
antenna at the top of the support, a disaster victim who is unable to move because of being
trapped under the destroyed house sees the symbol, can recognize that rescue is close and can try
to operate the mobile terminal, which will contribute to making possible a quick rescue.
[0143] As described above, even in case mobile terminals cannot perform normal
communication, use of the present invention enables communication within a predetermined area
and it is possible to effectively use mobile terminals as a means for rescuing disaster victims by
use of the communications.
lo1441 Although the present invention has been explained with reference to the exemplary
embodiment, the present invention should not be limited to the above exemplary embodiment.
Various modifications that can be understood by those skilled in the art may be made to the
structures and details of the present invention within the scope of the present invention.
[0 1451 This application claims priority based on Japanese Patent Application No. 201 1-1 60042,
filed on July 2 1,20 1 1, and incorporates all the disclosure thereof herein. -

[Claim 11 A communication system including a mobile terminal, a first communication device
and a second communication device, characterized in that
the mobile terminal, when receiving a signal transmitted from the first
5 communication device for requesting mobile terminal ID information that has been allotted
beforehand to the mobile terminal so that the mobile terminal can be identified, transmits the
mobile terminal ID information to the first communication device,
the first communication device is deployed at a position of a predetermined height,
the first communication device transmits a signal, requesting the mobile terminal ID information,
10 to the radio communication coverage area and transmits the mobile terminal ID information
transmitted from the mobile terminal to the second communication device, and
the second communication device displays the mobile terminal ID information
transmitted from the first communication device.
15 [Claim 21 The communication system according to Claim 1, wherein the first communication
device is attached to a floating body and deployed at a position of the height.
[Claim 31 The communication system according to Claim 2, wherein the first communication
device is attached to the floating body, which is a balloon filled with a gas lighter than ambient
20 air.
[Claim 41 The communication system according to Claim 1, wherein the first communication
device is attached to a support and deployed at a position of the height.
25 [Claim 51 The communication system according to Claim 4, wherein the first communication
device is attached to the support that is mounted on a vehicle and deployed at a position of the
height, and,
the second communication device is mounted on the vehicle.
30 [Claim 61 The communication system according to Claim 1, wherein the mobile terminal
acquires positional information indicating the position of the mobile terminal and transmits the
acquired positional information together with the mobile terminal ID information,
the first communication device transmits the positional information transmitted from
the mobile terminal, together with the mobile terminal ID information; .and
the second communication device displays a map based on the positional
information transmitted from the first communication device. 1 9 EX 2013
[Claim 71 The communication system according to Claim 1, wherein the first communication
device, when receiving a call fiom the mobile terminal, notifies the second communication
device of the fact of reception, and
the second communication device, when receiving the call notification from the first
communication device, displays the mobile terminal ID information allotted to the mobile
terminal that made the call, in a distinguishable manner.
[Claim 81 The communication system according to Claim 7, wherein the second
communication device, when receiving the notice of reception of the call, fiom the first
communication device, establishes telephonic communication with the mobile terminal that has
made the call, by way of the first communication device.
[Claim 91 The communication system according to Claim 7 or 8, wherein the mobile terminal
makes a call when it has detected that the user has made a predetermined operation.
[Claim 101 The communication system according to Claim 1, wherein the first communication
device, when receiving transmission of a message fiom the mobile terminal, transmits the
message to the second communication device, and
the second communication device displays the message transmitted fiom the first
communication device.
[Claim 1 11 The communication system according to Claim 1, wherein the second
communication device, when the displayed mobile terminal ID information is selected by a
predetermined operation, makes a call to the mobile terminal that sent the selected mobile
terminal ID information, and,
the first communication device, when the second communication device has made a
call to the mobile terminal, relays telephonic communication between the second communication
device and the mobile terminal.
[Claim 121 The communication system according to Claim 1, Wher including a movable
rescue terminal capable of performing radio communication with the first communication device, *
~IGXMAL
0 wherein the second communication device,
is selected by a predetermined operation, makes a call to the mobile terminal that sent the
selected mobile terminal ID information, and relays telephonic communication between the
rescue terminal and mobile terminal by way of the first communication device.
5
[Claim 131 The communication system according to Claim 1, wherein the first communication
device and the second communication device are connected by a communication cable that can
supply electric power from the second communication device to the first communication device.
10 [Claim 141 A communication system including a mobile terminal, an antenna and a
communication device, characterized in that
the mobile terminal, when receiving a signal, transmitted from the communication
device by way of the antenna, for requesting mobile terminal ID information that has been
allotted beforehand to the mobile terminal so that the mobile terminal can be identified, transmits
15 the mobile terminal ID information to the communication device by way of the antenna,
the antenna is deployed at a position of a predetermined height,
the communication device transmits a signal, requesting the mobile terminal ID
information, to the radio communication coverage area of the antenna by way of the antenna and
displays the mobile terminal ID information transmitted from the mobile terminal by way the
20 antenna.
[Claim 151 The communication system according to Claim 14, wherein the antenna is attached
to a floating body and deployed at a position of the height.
25 [Claim 161 The communication system according to Claim 15, wherein the antenna is attached
to the floating body, which is a balloon filled with a gas lighter than ambient air.
[Claim 171 The communication system according to Claim 14, wherein the antenna is attached
to a support and deployed at a position of the height.
3 0
[Claim 181 The communication system according to Claim 17, wherein the antenna is attached
to the support that is mounted on a vehicle and deployed at a position of the height, and,
the communication device is mounted on the vehicle.
. ,
[Claim 193 The communication system according to Claim 14, wherein the mobile terminal
acquires positional information indicating the position of the mobile terminal and transmits the
acquired positional information together with the mobile terminal ID information, and,
the communication device displays a map based on the positional information
transmitted from the mobile terminal. 1 9 or: 2013
[Claim 201 The communication system according to Claim 14, wherein the communication
device, when receiving a call from the mobile terminal, displays the mobile terminal ID
information allotted to the mobile terminal that made the call, in a distinguishable manner.
[Claim 2 11 The communication system according to Claim 20, wherein the communication
device, when receiving a call from the mobile terminal, establishes telephonic communication
with the mobile terminal that has made the call, by way of the antenna.
[Claim 221 The communication system according to Claim 20 or 21, wherein the mobile
terminal makes a call when it has detected that the user has made a predetermined operation.
[Claim 231 The communication system according to Claim 14, wherein the communication
device, when receiving a message transmission from the mobile terminal by way of the antenna,
displays the message.
[Claim 241 The communication system according to Claim 14, wherein the communication
device, when the displayed mobile terminal ID information is selected by a predetermined
operation, makes a call by way of the antenna to the mobile terminal that sent the selected
mobile terminal ID information, and establishes telephonic communication between the mobile
terminal and itself by way of the antenna.
[Claim 251 The communication system according to Claim 14, further including a movable
rescue terminal capable of performing radio communication with the antenna, wherein the
communication device, when the displayed mobile terminal ID information is selected by a
predetermined operation, makes a call to the mobile terminal that sent the selected mobile
terminal ID information, and relays telephonic communication between the rescue terminal and
mobile terminal by way of the antenna.
[Claim 261 The communication system according to Claim 14, wherein the antenna and the
communication device are connected by an RF cable.
[Claim 271 A communication device deployed at a position of a predetermined height,
comprising:
a mobile terminal interface portion that transmits a signal, requesting mobile
terminal ID information that has been allotted beforehand to a mobile terminal so that the mobile
terminal can be identified, to the radio communication coverage area of the communication
device, and
a device interface portion that, when the mobile terminal ID information is
transmitted from the mobile terminal, transmits the mobile terminal ID information to a device
connected to the communication device.
[Claim 281 A communication device comprising:
an interface portion that, when mobile terminal ID information that has been allotted
beforehand to a mobile terminal existing in the radio communication coverage area of a device
connected thereto is transmitted from the device, receives the mobile terminal ID information;
and,
a display portion that displays the mobile terminal ID information which the
interface portion has received.
[Claim 291 A communication device connected to an antenna, comprising:
an interface portion that transmits a signal, requesting mobile terminal ID
information which has been allotted beforehand to a mobile terminal so that the mobile terminal
can be identified, to the radio communication coverage area of the antenna and that, when the
mobile terminal ID information is transmitted from the mobile terminal by way of the antenna,
receives the mobile terminal ID information; and,
a display portion that displays the mobile terminal ID information which the
interface portion has received.
[Claim 301 A communication method in a communication system including a mobile terminal, a
first communication device and a second communication device, comprising:
a step for the first communication device deployed at a position of a predetermined
height to transmit a signal, requesting mobile terminal ID information that has been allotted
0 beforehand to the mobile terminal so that the mobile terminal can be identified, to the radio
communication coverage area of the first communication device; 1 9 DEC 2013
a step for the mobile terminal to transmit the mobile terminal ID information to the
first communication device when the mobile terminal receives the signal requesting the mobile
5 terminal ID information that was transmitted from the first communication device;
a step for the first communication device to transmit the mobile terminal ID
information transmitted from the mobile terminal to the second communication device; and,
a step for the second communication device to display the mobile terminal ID
information transmitted from the first communication device.
I 10
[Claim 3 11 A communication method in a communication system including a mobile terminal
and a communication device, comprising:
a step for the communication device to transmit a signal, requesting mobile terminal
ID information that has been allotted beforehand to the mobile terminal so that the mobile
15 terminal can be identified, to the radio communication coverage area of an antenna connected to
the communication device and deployed at a position of a predetermined height, by way of the
antenna;
a step for the mobile terminal to transmit the mobile terminal ID information to the
communication device by way of the antenna when the mobile terminal receives the signal
20 requesting the mobile terminal ID information that was transmitted from the communication
device by way of the antenna; and,
a step for the communication device to display the mobile terminal ID information
transmitted fiom the mobile terminal by way of the antenna.
25 Dated this lgth Day of December 2013
Of Anand &A&
1 Agent for the Applicant