KR20060090179A - Communication terminal, communication system, and communication method - Google Patents

Abstract

The communication terminal includes a transceiver; A position detector for detecting a position of the communication terminal; An environment information detector for detecting environment information of the location; And a controller configured to generate map information including the received location information and environment information.

Communication terminal, map information, location information, environmental information, mobile phone

Description

COMMUNICATION TERMINAL, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD}

1 is a block diagram of a communication system according to a first embodiment of the present invention.

2 is a block diagram of the communication terminal shown in FIG.

3 is a flowchart for explaining a first operation example of the communication system according to the first embodiment;

4 illustrates a display example of map information including both location information and environment information.

5 is a flowchart for explaining a second operation example of the communication system according to the first embodiment.

6 is a block diagram of a communication system according to a second embodiment of the present invention.

7 is a block diagram of the communication terminal information management server shown in FIG. 6;

8 is a diagram showing an example format of communication terminal information.

9 is a flowchart for explaining an operation example of a communication system according to the second embodiment.

Fig. 10 illustrates a display example of the application of the display example shown in Fig. 4, and shows a display example of map information including at least both the position information of its own communication terminal and the position information of the counterpart terminal.

<Brief description of the major symbols in the drawings>

30: location information detection unit

32: environmental information detection unit

34: transceiver

36 antenna

38: control panel

40: display unit

42: memory

44: control unit

The present invention relates to a communication terminal, a communication system and a communication method. In particular, the present invention relates to a communication terminal, a communication system, and a communication method for accurately and easily transmitting and receiving information on the current location of each communication terminal and its environment.

Recently, portable communication terminals such as cellular telephones and personal handheld phone systems (PHS) have been widely used. The location of such communication terminals and their surroundings generally change from moment to moment. For various reasons, in many cases, a user of a communication terminal needs to obtain accurate information about the state of the communication counterpart when communicating with a communication counterpart using another communication terminal.

The user of the communication terminal can explain his or her situation to the communication counterpart during the conversation. However, because the sender often misunderstands or cannot fully explain his or her situation, the information is not always objective or accurate.

JP 2001-346246 A discloses a technique for notifying a communication counterpart of objective information such as the current position of a local communication terminal. The communication terminal disclosed in JP 2001-346246 A transmits its position information obtained from a GPS satellite or the like to a communication terminal of a communication counterpart. Therefore, the user of the communication terminal can obtain the current position of the communication terminal of the communication counterpart without any further effort.

However, the information sent from the communication terminal to other communication terminals includes only the positional information and does not include the environmental information obtained at the position of the communication terminal. In this case, the sender needs to talk to the communication counterpart verbally about the environmental information as in the conventional method. Therefore, the receiver cannot obtain accurate environmental information, and additionally, the sender must make a call to say environmental information, which is a cumbersome task.

The present invention has been made to solve the above-mentioned problem. An exemplary feature of the present invention is to provide a communication terminal, a communication system, and a communication method for easily and accurately transmitting and receiving information on the current location of each communication terminal and its environment.

In a first aspect of the present invention, a communication terminal comprises: a transceiver; A position detector for detecting a position of the communication terminal; An environment information detector for detecting environment information of the location; And a controller for generating map information including the received location information and environment information.

In a second aspect of the present invention, a communication system includes a plurality of communication terminals; And a map information storage device. Each terminal of the plurality of communication terminals includes a transceiver unit; A position detector for detecting a position of the communication terminal; An environment information detector for detecting environment information of the location; And a controller configured to receive map information including a location from the map information storage device based on the received location information, and generate map information including location information and environment information.

In a third aspect of the present invention, a communication method for communication performed between communication terminals includes: detecting location and environmental information at a location where a first communication terminal exists; Transmitting location information and environment information to a second communication terminal; And generating, at the second communication terminal, map information including the location information and the environment information received from the first communication terminal.

In a fourth aspect of the present invention, a communication method for communication performed between a plurality of communication terminals and a server includes: detecting location and environment information at a location where a first communication terminal exists; Transmitting location information and environment information to a server; Generating and storing communication terminal information including location information and environment information received from the first communication terminal at the server; Transmitting communication terminal information to a second communication terminal; And generating, at the second communication terminal, map information including location information and environment information included in the communication terminal information received from the server.

According to the present invention, the communication terminal transmits not only the location information but also information on the environment where the communication terminal is located to other communication terminals. The transmitted information is objective information detected by the location information detector and the environment information detector, respectively. These pieces of information are exchanged as data between communication terminals via the transceiver. Therefore, according to the present invention, information on the current position of the communication terminal and its environment can be transmitted and received accurately and easily.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.

1 is a block diagram of a communication system 10 according to a first embodiment of the present invention. The communication system 10 includes a plurality of communication terminals 14a and 14b in the mobile network 12, hereinafter only the terminals 14a are described as representatives thereof. The communication system 10 further includes a map server 20 (map information storage device) connected to the mobile network 12 via the Internet 22. The communication terminal 14a communicates with a global positioning system (GPS) satellite 50, a wireless base station 52, and an environmental information providing device 70. The communication terminal 14a is a general purpose mobile terminal such as a cellular telephone, a personal handy phone system (PHS), or a personal digital assistant (PDA). The map server 20 has a database for storing map information (map image) of various regions on the earth. The map server 20 provides predetermined map information in response to a request of a client (for example, the communication terminal 14a).

2 is a block diagram of the communication terminal 14a. The communication terminal 14a includes a location information detector 30, an environment information detector 32, a transceiver 34, an antenna 36, an operator 38, a display 40, a memory 42, and a controller ( 44).

The position information detection unit 30 detects the position information of the communication terminal 14 by using radio waves transmitted from the GPS satellites 50 or the radio base station 52. The position information detector 30 outputs the detected position information to the controller 44. The location information detector 30 may receive location information from a vehicle navigation system (not shown) or a location information providing sensor (not shown). The location information detected by the location information detector 30 may include three-dimensional location information such as "zone ZZ of the YY-th layer of the building XX".

The environment information detection unit 32 obtains environment information of the communication terminal 14a and outputs the obtained environment information to the control unit 44. The environment information detector 32 includes an environment information sensor unit 60 and an environment information receiver 62.

The environmental information sensor unit 60 detects environmental information surrounding the communication terminal 14a and outputs the detected environmental information to the control unit 44. The environmental information sensor unit 60 includes a temperature sensor 60a for measuring temperature, a humidity sensor 60b for measuring humidity, an ultraviolet sensor 60c for measuring the level of ultraviolet light, and an atmospheric pressure sensor for measuring atmospheric pressure. 60d, a microphone 60e for collecting ambient sounds, and a camera 60f for collecting ambient images. The environmental information sensor unit 60 does not need to include all of the sensors, but may include at least one of the sensors 60a to 60f. The sensor mounted on the environmental information sensor unit 60 is not limited to the sensors 60a to 60f. Sensors for measuring other environmental information may be appropriately mounted therein.

The environment information receiver 62 receives environment information transmitted from the environment information providing device 70 for providing environment information, and outputs the received environment information to the controller 44. The environmental information providing device 70 may be a sensor device connected to the communication terminal 14a via a cable. Alternatively, the environment information providing device 70 may be a wireless base station connected to the communication terminal 14a via an access point of a wireless network, for example, a wireless local area network (LAN). The sensor device and the wireless base station use predetermined detection devices to provide environmental information such as temperature, humidity, ultraviolet light, atmospheric pressure, ambient sound, ambient image, pollen level, air-clean level, radio-wave quality, and weather information. The detected environment information is transmitted to the environment information receiver 62.

The environment information detector 32 may include at least one of an environment information sensor unit 60 and an environment information receiver 62.

The transceiver 34 receives and transmits predetermined information, for example, location and environment information, from another communication terminal. The antenna 36 transmits and receives wireless signals. The operation unit 38 is composed of input devices such as keys and pointing devices, and outputs operation data input to the control unit 44 through these. The display unit 40 displays visible information such as images and text. The memory 42 is a recording medium accessible by the control unit 44, and stores data such as a program and position information for designating the operation of the communication terminal 14a. In addition, the memory 42 may store map information.

The control unit 44 is mainly formed of a controller such as a central processing unit (CPU), and controls the entire communication terminal 14a. For example, the controller 44 performs the following process. First, the control unit 44 inputs position information from the position information detection unit 30 and inputs environment information from the environment information detection unit 32. Secondly, the control section 44 transmits the input location information and environment information to another communication terminal or another device at a predetermined timing. Third, the controller 44 receives location information and environment information from another communication terminal or another device. Fourth, the controller 44 obtains map information including a location designated by the location information received from the map server 20.

3 shows a first operation example of the communication system 10 according to the first embodiment of the present invention. The control section 44 of the communication terminal 14a detects the positional information and the environmental information (step S1). The control section 44 determines whether the predetermined transmission condition is satisfied (step S2). The predetermined transmission condition indicates a condition that allows the transmission of information to the communication terminal 14b can be started. The transmission condition is satisfied when the position of the transmission terminal 14a is changed, for example. Alternatively, the transmission condition is satisfied when the control section 44 receives a timing signal from a device that outputs the timing signal at predetermined intervals. In other words, the communication terminal 14a always transmits the most recent location information and environment information to the communication terminal 14b. When it is determined that the predetermined transmission condition is satisfied, the control section 44 transmits the positional information and the environmental information to the communication terminal 14b (step S3).

The control unit 44 of the communication terminal 14b receives the positional information and the environmental information from the communication terminal 14a (step S4). Then, the control section 44 sends the original-map-information request to the map server 20 (step S5). In this case, the control section 44 transmits the positional information of the communication terminal 14a to the map server 20. Note that the original map information means map information that does not yet include location information and environment information of the communication terminal 14a.

The map server 20 receives the original-map-information request and the location information of the communication terminal 14a (step S6). The map server 20 extracts original map information including the received location information from the database (step S7). The map server 20 transmits the extracted original map information to the communication terminal 14b (step S8).

The control unit 44 of the communication terminal 14b receives original map information from the map server 20 (step S9). The controller 44 adds both the location information and the environment information received from the communication terminal 14a to the original map information to generate a map image (step S10), and displays the generated map image on the display unit 40 ( Step S11).

4 illustrates an example of map information generated by the controller 44. In Fig. 4, the position of the communication terminal 14a is indicated by an asterisk and the temperature information regarding the temperature at the position is shown in close proximity to the asterisk. This display example is only one example and can be modified in various ways. For example, the information about the position of the communication terminal 14a may be represented by text information (for example, "terminal A") instead of the mark or the like. In addition, the environment information may be superimposed on the location information to be displayed instead of being displayed in proximity to the location information. In addition, a configuration in which the location information or the environment information is displayed as an icon and the detailed information is displayed in a separate window when the icon is clicked can be adopted.

It should be noted that in the above-mentioned process, the communication terminal 14b is connected to the map server 20 when the newly received location information from the communication terminal 14a falls within the same range of map information as received at the previous time. The original-map-information request processing (steps S5 to S9) performed for the above can be omitted.

As mentioned above, according to the communication system of the first embodiment of the present invention, the communication terminal 14a transmits not only its positional information but also information about the environment surrounding it to the communication terminal 14b. These pieces of transmitted information are objective information detected by the location information detector 30 and the environment information detector 32, respectively. These pieces of information are transmitted and received as data by the transceiver 34. Therefore, in the communication system 10, information about the current location of the communication terminal 14a and its environment can be transmitted and received accurately and easily.

In addition, in the communication system 10, map information including both location information and environment information of the communication terminal 14a is displayed. Therefore, the user of the communication terminal 14b can intuitively know the location of the transmitting terminal 14a and the environment in which the communication terminal 14a is placed.

In addition, the communication terminal 14a transmits the positional information and the environmental information to the communication terminal 14b periodically or whenever the position of the communication terminal 14a is changed. Therefore, the user of the communication terminal 14b can obtain real time information of the communication terminal 14a.

Note that, in the above embodiment, the case where the communication terminal 14a transmits the location information and the environmental information to the communication terminal 14b has been described, but the location information and the environmental information are communicated from the communication terminal 14b. It goes without saying that it can be transmitted to (14a).

In addition, the number of communication terminals is not limited to two, but may be three or more. In this case, for example, one communication terminal may broadcast location information and environment information to the remaining two or more communication terminals.

If the environmental information sensor unit 60 includes a camera and a microphone, the controller 44 may control them remotely.

When the environment information detector 32 detects the surrounding image information, the communication terminal 14b can set a small window at a predetermined position of the map information shown in FIG. 4 and display the surrounding image information in the window. In addition, when the environmental information detection unit 32 detects the ambient sound information, the communication terminal 14b can output the ambient sound information from the speaker or the like while displaying the map information shown in FIG. 4 on the display unit 40. have.

The flowchart of FIG. 5 shows a second example of operation of the communication system 10 shown in FIG. 1. The communication terminal 14b transmits an information request to the communication terminal 14a (step S20). The control unit 44 of the communication terminal 14a determines whether an information request has been received from the communication terminal 14b (step S21). If it is determined that the information request has been received (YES in step S21), the control section 44 detects the positional information and the environmental information of the communication terminal 14a (step S22). The control unit 44 transmits the detected position information and environment information to the communication terminal 14b (step S23).

The control unit 44 of the communication terminal 14b receives the positional information and the environmental information from the communication terminal 14a (step S24). Then, the control section 44 sends the original-map-information request to the map server 20 (step S25). In this case, the control section 44 transmits the positional information of the communication terminal 14a to the map server 20.

The map server 20 receives the original-map-information request (step S26). The map server 20 extracts original map information including the received location information from the database (step S7). Then, the map server 20 transmits the extracted original map information to the communication terminal 14b (step S8).

The control section 44 of the communication terminal 14b receives original map information from the map server 20 (step S29). The controller 44 adds both the location information and the environment information received from the communication terminal 14a to the original map information to generate a map image (step S30), and displays the generated map image on the display unit 40 ( Step S31).

As described above, the transmission of the location information and the environment information is performed based on the request of the communication terminal 14b, so that the communication terminal 14a side should perform a process of determining whether the transmission condition is satisfied. Can be saved.

Note that when the information request is transmitted to the communication terminal 14a in FIG. 5, the communication terminal 14b also receives identification information identifying itself with the information request, and the communication terminal 14a identifies Authenticate the information. In such an operation, only the communication terminal permitted to obtain the information can obtain the information of the communication terminal 14a. That is, the security of the communication system 10 can be improved by preventing the information of the communication terminal 14a from being unreasonably leaked to a third party. The identification information described above may be a telephone number or a password, for example. The identification information need not be sent with the information request, but can be sent separately.

6 is a block diagram of a communication system 100 according to a second embodiment of the present invention. In the communication system 100 according to the second embodiment, the communication terminal information management server 102 is provided to the mobile network 12. The other components are the same as in FIG. Therefore, the remaining components of FIG. 6 are given the same reference numerals as in FIG. 1, and description thereof is omitted.

7 is a block diagram of the communication terminal information management server 102. The communication terminal information management server 102 includes a communication unit 104, a memory 106, and a control unit 108. The communication unit 104 communicates with the communication terminals 14a and 14b via the mobile network 12. The memory 106 stores a program designating the operation of the communication terminal information management server 102 and information about the communication terminals 14a and 14b. The control unit 108 is mainly formed of a controller such as a CPU, and accesses the communication unit 104 and the memory 106 to control the entire communication terminal information management server 102.

8 shows an example of the format of the communication terminal information 110 stored in the memory 106. In the communication terminal information 110, n records each containing location information and environment information received from the communication terminal 14a and their reception times are arranged in a time sequence. When the communication terminal information management server 102 manages the information on the plurality of communication terminals, the communication terminal information 110 is generated for each communication terminal. Receive time information is not always required.

9 shows an example of the operation of the communication system 100 according to the second embodiment of the present invention. The control unit 44 of the communication terminal 14a detects the positional information and the environmental information (step S40). The control section 44 determines whether the condition for transmitting the positional information and the environmental information to the communication terminal information management server 102 is satisfied (step S41). If it is determined that the transmission condition is satisfied, the control section 44 transmits the location information and the environment information to the communication terminal information management server 102 (step S42).

The control unit 108 of the communication terminal information management server 102 receives the location information and the environment information from the communication terminal 14a (step S43). The control unit 108 generates communication terminal information 110 about the communication terminal 14a (step S44). The controller 108 stores the generated communication terminal information 110 in the memory 106. The control unit 108 determines whether the condition for transmitting the communication terminal information 110 to the communication terminal 14b is satisfied (step S45). Here, the transmission condition indicates a condition that allows the communication terminal information 110 to be transmitted from the communication terminal information management server 102 to the communication terminal 14b. The transmission condition is satisfied, for example, when the communication terminal information management server 102 receives an information request from the communication terminal 14b. Alternatively, the transmission condition is satisfied when the communication terminal information management server 102 authenticates the identification information of the communication terminal 14b. If it is determined that the transmission condition is satisfied, the control unit 108 reads the communication terminal information 110 from the memory 106 and transmits it to the communication terminal 14b (step S46).

The control unit 44 of the communication terminal 14b receives the communication terminal information 110 about the communication terminal 14a from the communication terminal information management server 102 (step S47). The control section 44 sends the original-map-information request to the map server 20. In this case, the control section 44 also transmits the positional information of the communication terminal 14a to the map server 20.

The map server 20 receives the original-map-information request (step S49), and additionally extracts original map information including the location information received from the database (step S50). The map server 20 transmits the extracted original map information to the communication terminal 14b (step S51).

The control unit 44 of the communication terminal 14b receives original map information from the map server 20 (step S52). The controller 44 adds both the location information and the environment information received from the communication terminal 14a to the original map information to generate a map image (step S53), and displays the generated map image on the display unit 40 ( Step S54).

As described above, in the communication system 100 according to the second embodiment of the present invention, the information about the communication terminal 14a obtained in a fixed period of time is, like the communication terminal information 110, a communication terminal information management server. Is maintained at 102. Then, the communication terminal 14b obtains information as needed. Therefore, the user of the communication terminal 14b can collect past information as well as current information of the communication terminal 14a. In addition, the communication terminal 14b can obtain the communication terminal information 110 regardless of the connection state between the communication terminal 14a and the communication terminal information management server 102. Therefore, even when the communication terminal 14a is outside the service area, the communication terminal 14b can obtain the most recent information about the communication terminal 14a obtained when the communication terminal 14a was in the service area. Can be.

In addition, the communication terminal information management server 102 may handle information of a plurality of communication terminals. Thus, for example, a user of the communication terminal 14b may have a typical environment of a predetermined area (eg, each city, city, and town) in which the communication terminal 145a exists from the communication terminal information management server 102. Information (for example, average temperature information) can be obtained.

In the above operation, the communication terminal 14a transmits its location information and environment information to the communication terminal information management server 102. However, the present invention is not necessarily limited to such a configuration. For example, the communication terminal 14a transmits each piece of information to the communication terminal 14b as in the first embodiment. Meanwhile, the communication terminal information management server 102 may automatically generate the communication terminal information 110 by monitoring the information transmitted from the communication terminal 14a to the communication terminal 14b via the mobile network 12. .

In the above-described first and second embodiments, the device for storing map information is not limited to the map server 20 and can be modified as appropriate. For example, the map information storage device may be a vehicle 42 or memory 42 of the communication terminals 14a and 14b. Alternatively, the map information storage device can be external storage devices such as CD-ROMs and DVDs.

Fig. 10 illustrates a display example of an application of map information generated by the control section 44 of the communication terminal 14b serving as the information receiving side. Before displaying the map information, the communication terminal 14b first detects its location information and environment information. Then, the communication terminal 14b receives the positional information and the environmental information of the communication terminal 14a. The control section 44 of the communication terminal 14b indicates that the position of the communication terminal 14b (the position of its own terminal) is indicated by a double circle, and the position of the communication terminal 14a (the position of the opposite terminal) is indicated by a black circle. The temperature information detected at the location of the communication terminal is displayed around the circle, respectively, and generates map information in which the distance between the communication terminals is shown between the circles.

In addition, location information, environment information, and map information may be synchronized by the map server 20 instead of the communication terminals 14a and 14b. In this case, the map server 20 is accommodated in the mobile network 12. The map server 20 receives location information and environment information from the communication terminal 14a. The map server 20 extracts map information including the received location information from the database, and simultaneously displays the map information including the location information and the environment information of the communication terminal 14a within the map range designated by the extracted map information. Create an image. The map server 20 transmits the generated map image to the communication terminal 14b.

Although the invention has been described in connection with specific illustrative embodiments, the subject matter defined by the invention is not limited to these specific embodiments. On the contrary, the subject matter of the present invention is intended to cover all alternatives, modifications, and equivalents as may be included in the spirit and scope of the following claims.

It is also the intention of the inventors to maintain all equivalents of the claimed invention even if the claims are amended in progress.

According to the present invention, it is possible to easily and accurately transmit and receive information on the current position of each communication terminal and its environment.

Claims (26)

In a communication terminal, A transceiver; A position detector for detecting a position of the communication terminal; An environment information detector for detecting environment information of the location; And A controller for generating map information including the received location information and environment information Communication terminal comprising a. The communication terminal of claim 1, wherein the transceiver transmits the location information and environment information to at least one of another communication terminal and a server. The method of claim 2, (A) When a predetermined timing signal is detected, (B) When a change in position of the communication terminal is detected, (C) When an information transmission request is received from an information requester, and (D) Identification information of an information requester is authenticated. In at least one case, the communication unit transmits the location information and environment information to at least one of the other communication terminal and the server. The method of claim 1, And the position detection unit detects the position of the communication terminal by using a predetermined radio wave transmitted from an external device. The communication terminal of claim 4, wherein the external device comprises a GPS satellite. The communication terminal of claim 4, wherein the external device comprises a wireless base station. The communication terminal of claim 1, wherein the environment information detector detects at least one of temperature, humidity, ultraviolet light, atmospheric pressure, sound, and image. 8. The communication terminal of claim 7, wherein the environment information detector comprises at least one of an environment information sensor and an environment information receiver for receiving environment information from a device for providing environment information. The communication terminal of claim 1, wherein the control unit generates map information including location information and environment information on a location of its communication terminal and location information and environment information on a location of another communication terminal. The communication terminal of claim 9, wherein the map information includes a distance between communication terminals. The communication terminal according to claim 1, wherein the control unit obtains map information in a given area including location information from a map information storage device, based on the received location information. The communication terminal of claim 11, wherein the map information storage device comprises a server that can be connected via a communication network. The communication terminal of claim 11, wherein the map information storage device comprises a memory provided to the communication terminal. The communication terminal of claim 1, wherein the communication terminal is one of a cellular telephone, a personal handheld system, and a personal digital assistant (PDA). In a communication system, A plurality of communication terminals; And Map information storage device To include, each terminal of the plurality of communication terminals, A transceiver; A position detector for detecting a position of the communication terminal; An environment information detector for detecting environment information of the location; And A controller configured to receive map information including a location from the map information storage device based on the received location information, and generate map information including location information and environment information Communication system comprising a. The communication system according to claim 15, wherein the transceiver transmits the location information and environment information to at least one of another communication terminal and a server. The method according to claim 16, wherein (A) a predetermined timing signal is detected, (B) a change in position of the communication terminal is detected, (C) an information transmission request is received from an information requester, and (D) information. And at least one of the cases where the identification information of the claimant is authenticated, wherein the transceiver transmits the location information and the environment information to at least one of a server and another communication terminal. 16. The apparatus according to claim 15, further comprising a communication terminal information management server connected to a communication network, And the communication terminal information management server generates and stores communication terminal information including location information and environment information received from the communication terminal. The communication system according to claim 18, wherein said communication terminal information management server transmits communication terminal information to a communication terminal that has issued an information transmission request. 20. The communication system according to claim 19, wherein said information transmission request includes identification information of said communication terminal. In the communication method for communication performed between communication terminals, Detecting location and environmental information at a location where the first communication terminal is present; Transmitting the location information and environment information to a second communication terminal; And Generating, at the second communication terminal, map information including the location information and environment information received from the first communication terminal; Communication method comprising a. The method according to claim 21, wherein (A) when a predetermined timing signal is detected, (B) when a change in position of the first communication terminal is detected, (C) when an information transmission request is received from the second communication terminal, And (D) at least one of the cases in which the identification information of the second communication terminal is authenticated, wherein the first communication terminal transmits location information and environment information to the second communication terminal. The terminal of claim 21, wherein the second communication terminal generates map information including location information and environment information on the location of the second communication terminal and location information and environment information on the location of the first communication terminal. Communication method. In the communication method for communication performed between a plurality of communication terminals and the server, Detecting location and environmental information at a location where the first communication terminal is present; Transmitting the location information and environment information to the server; Generating and storing, at the server, communication terminal information including the location information and environment information received from the first communication terminal; Transmitting the communication terminal information to a second communication terminal; And Generating, at the second communication terminal, map information including location information and environment information included in the communication terminal information received from the server; Communication method comprising a. The location information and environment information according to claim 24, wherein in the case of at least one of (A) when a predetermined timing signal is detected, and (B) when a change in position of the first communication terminal is detected, A communication method transmitted from a communication terminal to the server. 25. The communication apparatus according to claim 24, wherein at least one of (A) an information transmission request is received from the second communication terminal, and (B) an identification information received from the second communication terminal is authenticated. Terminal information is transmitted from the server to the second communication terminal.

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