JP3481915B2 - Position-dependent mobile communication system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides communication between a center and a mobile terminal capable of Internet mail (hereinafter, simply referred to as "mobile terminal" in the specification and drawings of the present application) so that the current position of the mobile terminal and the destination can be reached. The present invention relates to a simple and versatile system for automatically transmitting Internet mail from a mobile terminal based on distance difference information and instructions from a center.

[0002]

2. Description of the Related Art A conventional GPS (abbreviation of Global Positioning System; Japanese Patent Laid-Open No. 11-46164) is used to detect a position of an object on the earth using a plurality of communication satellites. Hereinafter, it is used in abbreviated form as GPS in the present specification.) Is widely used in the car navigation field, but was not used together with the function of Internet mail. The packet mode is used as a method of transmitting and receiving GPS information with a mobile phone, but it has a drawback that a dedicated line is required on the center side and the operation price becomes high.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the above-mentioned conventional techniques,
The GPS reception function and the bar code interface are integrated into a mobile terminal to exchange information by Internet mail, and the purpose is as follows.

Each of the inventions described in claims 1 to 3 is a system for performing communication between a center and a mobile terminal, and a comparison result of a distance difference between a destination and the current position of the mobile terminal and a specified value or an instruction from the center. With the above, it is an object of the present invention to realize a highly convenient system that does not burden the driver by automatically transmitting an Internet mail from a mobile terminal.

[0005] The invention according to claim 2 and 3, and congestion mail traffic, if not normally able to send and receive e-mail, by switching the circuit mode, to be able to reliably send and receive information With the goal.

According to a fourth aspect of the present invention, the mail used in the position-dependent mobile communication system is distinguished from the mail used for other purposes so that the mail in the position-dependent mobile communication system can be processed reliably. The purpose is to do.

The invention according to claim 6 is directed to a destination as a daily work, for example, in the case of a physical distribution truck, when the driver arrives at the destination in advance, the driver operates a key, etc. It is characterized in that the latitude and longitude information of the ground is stored in the mobile terminal. When the mobile terminal arrives at the same place again, the effect of multipath transmission due to the multiple reflection of GPS signals from the features around the destination is offset,
The purpose is to enable accurate detection of arrival at the destination.

According to the first and fifth aspects of the present invention, arrival at the destination is detected by comparing the distance difference between the latitude and longitude of the destination and the latitude and longitude of the current position of the mobile terminal with the threshold distance difference. Therefore, it is an object of the present invention to enable reliable and easy detection of arrival at the destination.

The invention according to claim 7 is the invention according to claim 1,
In addition to the above description, the satellite received by the GPS receiver of the mobile terminal (hereinafter, “GPS satellite” in the specification and drawings of the present application)
Say. The smaller the number of), the larger the detection error. Therefore, the smaller the number of GPS satellites received by the mobile terminal, the larger the threshold distance difference in response to the detection error. The purpose is to improve adaptability to.

According to the invention described in claim 8, in addition to the claims 1 and 5 , the GPS satellites in the mobile terminal are selected in descending order of elevation angle, and the current position is calculated. It is an object of the present invention to reduce the influence of multipath caused by multiple reflections from surrounding features and to detect the current position with high accuracy. Further, when the center side uses the same GPS receiver to correct the GPS information from the mobile terminal, the mobile terminal can specify the satellite used for the calculation, so that the correction can be performed accurately.

According to the ninth aspect of the invention, when the portable terminal enters an underground mall, for example, the number of GPS receiving satellites becomes close to 0 and the detection error of the current position becomes large, so the portable terminal enters the underground mall. By storing the GPS reception information in the previous normal state and using it as the normal current position, GP
An object of the present invention is to enable a mobile terminal to continuously transmit the current position to the center even if S satellite information cannot be normally received.

According to the tenth aspect of the invention, when the same destination is repeatedly used, such as a logistics truck, the GPS information at the destination is stored as history information in the mobile terminal or the center, and is stored. By using the GPS information as a correction value of the GPS information at the destination, the influence of multipath due to the features around the destination is canceled and the current position can be detected with high accuracy.

According to the eleventh aspect of the present invention, the mobile terminal is provided with a bar code interface function, the home page of the center is easily accessed by the Internet mail function of the mobile terminal, the bar code information and the GPS are displayed on the web screen of the mobile terminal. An object of the present invention is to realize a highly flexible business system by displaying information and enabling input of information necessary for business in addition to GPS information and bar code information while referring to a screen.

According to a twelfth aspect of the present invention, the mobile terminal is provided with an image information interface function by a camera, and the mobile terminal obtains the entry / seal information of the slip related to the parcel and the status of the parcel from the mobile terminal by the camera. The purpose is to be able to send to the center via.

[0015]

Each of the inventions described in each claim is made to achieve each of the above-mentioned objects, and will be described below. The reference numerals in parentheses indicate the reference numerals used in the embodiments of the invention.

The position-dependent mobile communication system according to any one of claims 1 to 3 is a system for performing communication between a center and a mobile terminal, wherein a destination position previously stored in the mobile terminal and GPS reception by the mobile terminal are received. The distance difference from the current position of the mobile terminal detected by the function (including the case of receiving via the adapter) is detected, and when the distance difference is less than or equal to the threshold distance difference, the current position or the distance difference (hereinafter, the present application) In the specification, "current position / distance difference information") is transmitted by Internet mail. That is, GP
The Internet mail is automatically transmitted according to the distance difference between the destination and the current position based on the S information and a command from the center. The destination position may be described as a point, and may be a line or an area. Further, communication by Internet mail includes a case where a mobile terminal communicates via a personal computer and a case where communication is performed directly from the mobile terminal without going through the personal computer, and is called i-mode (a mode in which text information communication is possible on the Internet. , CTMML system, packet communication is used), EZ web and J Sky can be used. In addition, GPS is used as a position detection means.
Although a satellite is used, a positioning satellite other than this, for example, a European GLONASS satellite may be used.

In the position-dependent mobile communication system according to claim 2, after the center receives the current position / distance difference information by Internet mail, the reception confirmation signal is transmitted to the mobile terminal by Internet mail, and the mobile terminal confirms the reception. If the signal cannot be received within the predetermined time width, it is retransmitted, and if the number of retransmissions exceeds the predetermined number, the mobile terminal switches from Internet mode to line mode and transmits the current position / distance difference information. Is characterized by. Further, the position-dependent mobile communication system according to claim 3 transmits the current position / distance difference information from the mobile terminal based on the transmission command information by the Internet mail from the center, and the center is within a predetermined time width. If the current position / distance difference information cannot be received from the mobile terminal, it is retransmitted. If the number of retransmissions exceeds a predetermined number, the center switches from Internet mode to line mode and transmits the transmission command information. And In either case, the Internet mode is automatically switched to the line mode and the mail is transmitted when the number of resends of the transmission of the Internet mail information is exceeded.

In the position-dependent mobile communication system according to claim 4, when the center transmits the transmission command information by Internet mail, or when the portable terminal transmits the current position / distance difference information by Internet mail, the transmission is performed. Identification information for distinguishing the command information or the current position / distance difference information from other information is added, and the center or the mobile terminal ignores the Internet mail to which the identification information is not added,
It is characterized in that only the Internet mail to which the identification information is added is selected and processed. That is, it has a function of distinguishing general Internet mail from Internet mail used in the position-dependent mobile communication system.

The position-dependent mobile communication system according to claim 6 sets the destination position when the mobile terminal arrives at the destination in advance, for example, by operating a button of the mobile terminal.
It is characterized in that the present position based on the GPS reception information of the mobile terminal at the destination is stored in the mobile terminal as the destination position. That is, the latitude and longitude of the current position received by GPS are stored in the mobile terminal using the operation buttons of the mobile terminal and used as the destination position.

In the position-dependent mobile communication system according to claim 1 or 5 , the mobile terminal compares the latitude and longitude of the current position with the latitude and longitude of the destination position, and the distance difference between the two is preset. If the time when the difference between the threshold distances is less than or equal to the threshold time width that is greater than or equal to a preset threshold time width, it is determined that the positions of the two match. That is, the threshold value of the distance difference between the destination and the current position and the threshold value of the time width are set, and the arrival at the destination is determined using both threshold values.

In the position-dependent mobile communication system according to claim 7, the threshold distance difference and the threshold time width according to claims 1 and 5 are changed according to the number of satellites received by the GPS receiver of the mobile terminal. It is characterized by doing.

In the position-dependent mobile communication system according to claim 8, among GPS satellites, satellites with a high elevation angle are sequentially arranged.
It is characterized in that a predetermined number of GPS satellites are selected in advance and the current position is calculated using information from the selected GPS satellites.

In the position-dependent mobile communication system according to claim 9, the current position of the mobile terminal obtained when the number of GPS satellites is large and the calculation is normally performed is carried as the normal current position together with the received time information. When the number of GPS satellites stored in the terminal is small and the current position cannot be normally calculated, the most recent normal current position is used as the current position of the mobile terminal. That is, G normally
At a point where PS information cannot be received, the position information immediately before being normally received by GPS is stored and used at least at the next timing until the GPS information is normally received.

According to a tenth aspect of the mobile communication system of the present invention, the preset destination position is stored in a mobile terminal or a center, and again the preset location of the destination position is set in the mobile terminal. When the vehicle passes, the destination position is used as correction information for the current position of the mobile terminal.

In the position-dependent mobile communication system according to the eleventh aspect, a bar code interface function is added to the mobile terminal, and the bar code information and the G code are displayed on the web screen of the mobile terminal.
It is characterized in that the current position of the mobile terminal is displayed by the PS reception information and is transmitted to the center. The information to be displayed is added to the display contents by key input or the like and is written on the homepage of the center.

According to the twelfth aspect of the position-dependent mobile communication system, the image information interface function by the camera is added to the mobile terminal, and the current image of the mobile terminal based on the image information by the camera and the GPS reception information is displayed on the web screen of the mobile terminal. It is characterized by displaying the position and transmitting it to the center. Image information input by the camera is added to the displayed contents, and slip stamp information or the like is sent to the center.

[0027]

1 to 12 show an example of an embodiment of the present invention. 1 is a schematic configuration diagram of a position-dependent mobile communication system, FIG. 2 is a configuration diagram of a mobile terminal,
FIG. 3 shows a block diagram of the center.

The configuration of the position-dependent mobile communication system using the mobile terminal according to the present embodiment is, for example, as shown in FIG. 1, a mobile terminal (100), a mobile communication network (200), an internet network (300), a center. (400) and Internet mail server (500).

The portable terminal (100) has, for example, as shown in FIG. 2, a portable telephone unit (110) and an adapter (190).
Composed of. The adapter (190) is a bar code reader interface unit connected to the Internet mail interface unit (120), the line mode interface unit (121), the sequence control unit (130) that controls the processing procedure, and the bar code reader unit (141). (14
0), an image information interface unit (142) connected to the camera (143), an operation unit (150), a position detection unit (160) having a GPS reception function, a storage unit (170),
The comparison unit (171), the calculation unit (172), the mail processing unit (173), and the time information input unit (174). The adapter (190) is used for the mobile phone (11
0) may be integrated. The antenna for the GPS receiver may be built in the mobile terminal, or may be installed on the roof of a car or the like and connected to the mobile terminal by a cable or electromagnetic coupling.

The center (400) is, for example, as shown in FIG. 3, a communication device (210) for communicating with the outside, a sequence control unit (230) for controlling the processing procedure, and a storage unit (2).
70), a comparison unit (271), and a mail processing unit (273).

FIG. 4 shows an Internet mail transmission flow S100. . It corresponds to the inventions of claims 1 to 3 . In step S101, the storage unit (170) of the adapter (190) of the mobile terminal (100) stores the destination position in latitude and longitude. Storage unit in step S102 (170)
The latitude / longitude of the destination position is further output, the latitude / longitude of the current position is output from the position detection unit (160) of the adapter in S103, and the distance difference information between the two output results is created in S104. In S105, the created distance difference information is compared with the threshold distance difference, and if the distance difference is less than or equal to the threshold distance difference, S10
In step 6, the mail processing unit (173) adds the ID of the mobile terminal to the current position / distance difference information (that is, edits) S1.
At 07, the mobile phone (110) transmits it as an Internet mail to the center (400) through the Internet interface unit (120). If the distance difference is greater than or equal to the threshold distance difference in S105, the process returns to S103. The calculation unit (172) calculates the current position and the distance difference based on the GPS reception information, and the comparison unit (171) compares the distance difference.

When the portable terminal (100) receives the Internet mail transmission command from the center (400) in S108, the Internet mail is edited in S106,
An internet mail is transmitted in S107.

FIG. 5 shows a flow S200 in which the portable terminal (100) takes the initiative to switch the Internet mode to the line mode and send the mail. This corresponds to the invention described in claim 2. The mobile terminal adapter (190) is step S2.
In 01, an Internet mail in which the mobile terminal ID is added to the current position / distance difference information edited in the mail processing unit (173) is transmitted to the center (400), a timer is set in S202, and a reception confirmation signal from the center is received in S203. Wait for The center (400) is the mobile terminal (100) in S204.
When the Internet mail from is received, the reception confirmation signal is transmitted to the mobile terminal (100) by Internet mail in S205.

When the portable terminal receives the Internet mail for confirmation of receipt sent from the center in S205 within the timing set in S202, it enters a waiting state in S206. That is, it becomes a free state and can receive a new signal from the center. If not received within the timing in S207, the transmission of the Internet mail in S201 is repeated in S208. Even when the mobile terminal (100) reaches the maximum number of retransmissions determined in advance, the center (40
If the Internet confirmation mail from 0) cannot be received, the mobile terminal (100) switches to the line mode and sends it to the center (400) via the line mode interface unit (121). On the center side, S21
When the mail is received from the mobile terminal (100) which is 0 in the line mode, the mobile phone (100) enters the waiting state.

FIG. 6 is a flow S for sending mail by switching from the Internet mode to the line mode under the initiative of the center.
Shows 300. This corresponds to the invention described in claim 3. The center (400) sends the mail processing unit (2
The Internet mail transmission command edited in 73) is transmitted to the mobile terminal (100), the timer is set in S302,
In step S303, the mobile terminal (100) waits for an internet mail. The mobile terminal adapter (190) is S3
When the Internet mail transmission command from the center is received at 04, the mail edited by the mail processing unit (173) at S305 is transferred to the Internet interface unit (120).
The Internet mail is transmitted from the mobile phone unit (110) via the.

If the center (400) receives the Internet mail transmitted from the portable terminal (100) in S305 in S306 within the timing set in S302, the center (400) enters a waiting state. If not received within the timing in S307, the process returns to S301 in S308, and the transmission of the Internet mail is repeated. When the center (400) cannot receive the Internet mail from the mobile terminal (100) even when the maximum number of retransmissions set in advance is reached, the center switches to the line mode and transmits to the mobile terminal (100). The mobile terminal adapter (190) monitors the incoming call of the Internet mail and the incoming call in the line mode by interrupting the control unit (130) at regular intervals.
When a mail transmission command via the line mode is received in 310, the mail is transmitted to the center (400) in the line mode in S311. The center (400) receives the mail in S312.

FIG. 7 shows a processing flow S400 for identifying a mail.
Indicates. This corresponds to the invention described in claim 4. In S401, the mail processing unit on the Internet mail transmitting side adds its own identification information (in the case of the mobile terminal (100) (173) and in the case of the center (400) (273)), and adds S40
2. Send an internet mail. S4 on the receiving side
In 03, the Internet mail is received, in S404, the mail processing unit ((173) in the case of a mobile terminal, (273) in the case of the center) reads the identification information, and in S405, the transmission command information or the current position / distance difference information Determine whether or not. If the judgment result is the mail of the transmission command information or the current position / distance difference information, the mail is received in S406, and the operation according to the contents of the mail is executed. If the mail is not the purpose of the present application, the mail is sent in S407. Ignore and skip.

In FIG. 8, when the mobile terminal (100) arrives at the destination in advance, the position information of the destination is displayed on the mobile terminal (10).
0) when storing (destination position setting) flow S5
Indicates 00. This corresponds to the invention described in claim 6 . When the mobile terminal (100) arrives at the destination in S501, the mobile terminal (100) performs S5.
In 02, the point number (destination number) corresponding to the destination name is input by operating the button of the operation unit (150). The storage unit (170) stores the point number (destination number) of the destination and the GPS position information (latitude / longitude of the destination) at the destination in S503. The stored information was output from the storage unit (170) using the destination number as a key in S102 in the flow of Internet mail transmission S100 (the above storage corresponds to S101) and stored in advance (preset in advance). Can be used as the destination location (for example). This offsets the effects of multipath transmission due to multiple reflections of GPS signals from features around the destination,
The arrival at the destination can be detected accurately.

FIG. 9 shows a flow S600 when determining the arrival of the mobile terminal (100) at the destination. Claim 1,
This corresponds to the invention described in item 5 . Mobile terminal adapter (19
0) stores the latitude / longitude of the destination position in the storage unit (170) in S601, outputs the latitude / longitude stored in the storage unit (170) in S602, and outputs the latitude / longitude in S603 in the position detection unit (160).
The latitude and longitude of the current position detected in step S6 are output momentarily, and S6
In 04, the current position of the mobile terminal (100) and the momentary distance difference between the destination position and the current position are accumulated for a predetermined time length, and it is determined in S605 whether the distance difference is less than or equal to the threshold distance difference. To do. If the distance difference is less than or equal to the threshold distance difference, S
In 606, the time widths that are less than or equal to the distance difference are integrated, and if the integrated time widths are greater than or equal to the threshold time width, it is determined that the destination has been reached in S607. The calculation of the distance difference and the integration of the time width are performed by the calculation unit (170), and the comparison of the distance difference and the time width is performed by the comparison unit (171).

FIG. 10 shows the setting of the threshold value of S600 and the GP.
The processing flow S700 of S information (current position information) detection is shown. This corresponds to the invention described in claims 7 to 9. The current position of the mobile terminal obtained when the number of GPS satellites is large and the calculation is normally performed is stored in the mobile terminal as the normal current position together with the received time information. The time information is input from a timer built in the mobile terminal (100) by, for example, pressing a button of the time information input unit (174). In step S701, the mobile terminal receives the GPS satellites by the position detection unit (160), detects the number of GPS satellites, and determines in step S702 whether the number of GPS satellites is a prescribed value (prespecified number), for example, 3 or more. . If the number of GPS satellites is 3 or more, the position information can be normally calculated from the GPS reception information, so the threshold distance difference and the threshold time width are set from S703. The setting is made on the operation unit (1
50), for example, by inputting with a keyboard,
0). The threshold distance difference and the threshold time width can be changed by the specified value of the number of GPS satellites. Since the accuracy of position detection improves as the number of GPS satellites increases, the threshold distance difference and the threshold time width are set to be small. In addition, GPS
In the case of fixing the number of satellites, among the GPS satellites, the satellites with a high elevation angle are sequentially selected from a predetermined number of GPS satellites, and the current position is calculated using the information from the selected GPS satellites. By doing so, highly accurate GPS information can be obtained.

If the number of GPS satellites falls below a prescribed value, for example, 2 in the determination of S702, the current position cannot be calculated normally, so the calculation of position information is stopped in S706, and the G information is calculated in S707.
The latest position information calculated when the number of PS satellites is received, for example, 3 or more, is set as the normal current position information and used as the current position information of the mobile terminal (100). This allows continuous communication with the center (400).

FIG. 11 shows a flow S800 of correcting position information based on history information. This corresponds to the invention described in claim 10. When the portable terminal (100) arrives at the destination in S801, or when it is determined that it arrives in S607, S8
The destination name input from the operation unit (150) in 02 and the current position information output from the position detection unit (160) are stored in the storage unit (170).

In step S803, the mobile terminal (100) is set to step S80.
When passing through the same destination as the first destination, the output information of the current position from the position detecting unit (160) at the time of passing in S804 is detected, and the storage unit (17) when arriving at the previous destination in S805 is detected.
The current position information of this time is corrected by the previous position information (latitude / longitude of the destination position set in advance) stored in 0). That is, the latitude after the degree of difference between the current position in latitude and longitude and the destination position passing time of the destination position set in advance, in addition to the GPS receiving information of the portable terminal after the destination position passing (100) operation The result is used as the corrected current position information of the mobile terminal (100).

FIG. 12 shows an input flow S900 by the Internet browser. It corresponds to the invention described in claims 11 and 12. In step S901, the mobile terminal detects the position detection unit (1
60) and the bar code written on the slip of the luggage in S902, for example, in the bar code reader (14).
1) Read from the bar code interface (14
0), input to the mobile phone unit (110) via the Internet interface unit (120), and displayed on the web screen of the mobile phone unit (110) in S903. Also,
The portable terminal takes in the current position information from the position detecting unit (160) in S901 and the imprint of the stamp on the slip of the luggage, for example, from the camera (143) in S906, and the image information interface unit (142) and the Internet interface unit ( It is input to the mobile phone unit (110) via 120) and is displayed on the web screen of the mobile phone unit (110) in S903. On the other hand, in S904, if the Internet browser function of the mobile phone (110) is used and, for example, the parcel is delivered from the operation unit (150) of the mobile phone, the sender code and the recipient code are input in the desired input fields on the web screen of S903. To send the information on the web screen to the center (400) in S905.

In the present embodiment, the storage of the destination position, the GP
An example in which the current position is calculated from the S information, the distance difference is calculated, the time that is less than or equal to the distance difference, and the distance difference and the time width are all compared by the mobile terminal (100) has been shown. It is also possible to perform the comparison using the storage unit (270) of the center (400), the comparison unit (271), and the arithmetic function. Besides, it is obvious that various modifications can be made without departing from the spirit of the present invention.

[0046]

Since the present invention is constituted as described above, it has the following effects.

According to each of the inventions described in claims 1 to 3 ,
Since the mobile terminal determines the approaching, arriving, and passing timing of the current position or destination of the mobile terminal and sends it to the center in a mail format, it is possible to realize a highly convenient system without driver's operation.

According to the second or third aspect of the present invention, even when the traffic of the Internet mail is congested, the Internet mail function can be switched to the line mode to reliably send and receive the mail.

According to the invention described in claim 4, since the identification information is added to the transmission command information or the current position / distance difference information, these mails and general mails can be easily distinguished.

According to the fifth to tenth aspects of the present invention, the influence of the multipath transmission due to the multiple reflections of GPS signals from the features around the destination is offset, and the threshold distance difference and the threshold time width. It is possible to accurately and surely detect that the mobile terminal has arrived at the destination by using, for example, using GPS reception information with high accuracy.

According to the eleventh or twelfth aspect of the present invention, by using the web browser function such as the Internet to access the home page of the center, the G
In addition to PS information, bar code information, image information from the camera, information necessary for business can be input while referring to the screen and sent to the center, so that a highly flexible business system can be realized.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a system according to the present invention.

FIG. 2 is a schematic diagram of a mobile terminal.

FIG. 3 is a schematic explanatory diagram of a center.

FIG. 4 is an operational flowchart of the system according to the present invention.

FIG. 5 is an operational flowchart of the system according to the present invention.

FIG. 6 is an operational flowchart of the system according to the present invention.

FIG. 7 is an operational flowchart of the system according to the present invention.

FIG. 8 is an operational flowchart of the system according to the present invention.

FIG. 9 is an operational flowchart of the system according to the present invention.

FIG. 10 is an operational flowchart of the system according to the present invention.

FIG. 11 is an operational flowchart of the system according to the present invention.

FIG. 12 is an operational flowchart of the system according to the present invention.

[Explanation of symbols]

100 mobile terminals 110 Mobile phone unit 120 Internet interface section 121 Line mode interface section 140 Bar code reader interface section 141 Bar code reader section 142 Image information interface section 143 camera 150 control panel 160 Position detector 170 storage 171 Comparison section 172 Operation unit 173 Mail processing unit 174 Time information input section 190 adapter 200 mobile communication network 210 communication device 230 Sequence control unit 270 storage 271 Comparison section 273 Mail processing unit 300 Internet network 400 centers 500 Internet mail server

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H04Q 7/38 H04B 7/26 109M H04Q 7/04 D (72) Inventor Hideyuki Iijima 2-1-1 Nishishinjuku, Shinjuku-ku, Tokyo Issue NTT Advanced Technology Co., Ltd. (72) Inventor Takashi Enomoto 2-3-1, Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Masayuki Takahashi Chiyoda-ku, Tokyo 2-3-1, Otemachi Nippon Telegraph and Telephone Corporation (72) Inventor Katsumi Inaba 2-3-1, Otemachi, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (56) Reference JP-A-5-244074 (JP, A) JP 9-319300 (JP, A) JP 11-351903 (JP, A) JP 11-287660 (JP, A) JP 9-236650 (JP, A) Open Hei 9-230025 (JP, A) JP 2000-259979 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04B 7/24-7/26 H04Q 7/00-7 / 38

Claims (12)

(57) [Claims] 1. A center and Internet mail-enabled mobile terminal end while a system which performs communication, the destination location which has been stored in advance in the mobile terminal, at the mobile terminal G
PS reception function (including when receiving via an adapter)
Detected a distance difference from the current position of the mobile terminal, and if the distance difference is less than or equal to the threshold distance difference, the current position or the current position / distance consisting of the distance difference.
It transmits the difference information in Internet mail, in the portable terminal, and compares the current position and the destination position, both
When the distance difference is less than or equal to the preset threshold distance difference
If the interval exceeds the threshold time width set in advance, both
A position-dependent mobile communication system characterized by determining that the positions of persons are the same . 2. A center and a mobile phone capable of Internet mail.
In a system for communicating between band terminals, the mobile terminal
The destination position stored in advance and G on the mobile terminal
PS reception function (including when receiving via an adapter)
The distance difference from the current position of the mobile terminal detected by
If the distance difference is less than or equal to the threshold distance difference,
Current position or the current position / distance consisting of the distance difference
After transmitting the difference information by Internet mail, the center receives the current position / distance difference information by the Internet mail, and then transmits a reception confirmation signal to the mobile terminal by Internet mail, and the mobile terminal transmits the reception confirmation signal. If it cannot be received within a predetermined time width, it is retransmitted, and if the number of retransmissions is more than a predetermined number, the mobile terminal switches from Internet mode to line mode and transmits the current position / distance difference information. position-dependent mobile communication system that characterized. [Claim 3] Center and internet mail capable
In a system for communicating between band terminals, the mobile terminal
The destination position stored in advance and G on the mobile terminal
PS reception function (including when receiving via an adapter)
The distance difference from the current position of the mobile terminal detected by
If the distance difference is less than or equal to the threshold distance difference,
Current position or the current position / distance consisting of the distance difference
The difference information is transmitted by Internet mail, and the current position / distance difference information is transmitted from the mobile terminal based on the transmission command information from the center by Internet mail, and the center transmits the current position / distance difference information within a predetermined time width. If the current position / distance difference information cannot be received, it is retransmitted, and if the number of retransmissions exceeds a predetermined number, the center switches from the Internet mode to the line mode and transmits the transmission command information. position-dependent mobile communication systems that <br/> with. 4. The transmission instruction information or the current transmission when the center transmits the transmission instruction information by the Internet email, or when the portable terminal transmits the current position / distance difference information by the Internet email. Identification information for distinguishing the position / distance difference information from other information is added, and the center or the mobile terminal ignores the Internet mail to which the identification information is not added, and only the Internet mail to which the identification information is added. The position-dependent mobile communication system according to claim 2 or 3, wherein is selected to perform processing. 5. The present position and destination position on the mobile terminal
And the difference in distance between the two is the threshold distance difference set in advance.
The time width that became below is less than the threshold time width set in advance.
The position-dependent mobile communication system according to any one of claims 2 to 4 , characterized in that it is determined that the positions of the both coincide with each other . 6. The setting of the destination position is performed in advance by the mobile
When the obi terminal arrives at the destination, the mobile phone at the destination
The current position according to the GPS reception information of the terminal is set as the destination position
Position-dependent mobile communication system according to any one of claims 1 to 5, characterized in that by storing the mobile terminal Te. 7. A claim 1, characterized in that can be modified by the number of G PS satellites received the threshold distance difference and the threshold duration in GPS receiver of the mobile terminal or
5. The position-dependent mobile communication system according to item 5 . 8. The present invention is characterized in that among GPS satellites, a predetermined number of GPS satellites are sequentially selected from satellites with a high elevation angle, and the current position is calculated using information from the selected GPS satellites. The position-dependent mobile communication system according to claim 1 or 5 . 9. The number of GPS satellites is stored in the portable terminal as a normal current position together with the received time information, which is the current position of the mobile terminal obtained when the number of GPS satellites is large and the calculation is normally performed. claim 1 is small, when can not operations successfully current position, characterized in that the use of normal current position during recent as the current position of the mobile terminal
Alternatively, the position-dependent mobile communication system according to item 5 . 10. The destination position set in advance is stored in the mobile terminal or the center, and when the mobile terminal passes a point where the destination position is set in advance again, the destination is set. claim 1, 5 or 9 position dependent mobile communication system according to any one of the positions, characterized in that it uses as the correction information of the current position of the mobile terminal. 11. A bar code interface function is added to the mobile terminal to display the current position of the mobile terminal based on the bar code information and the GPS reception information on the web screen of the mobile terminal and to transmit to the center. The position-dependent mobile communication system according to any one of claims 1 to 10 , characterized by the above-mentioned. 12. An image information interface function by a camera is added to the mobile terminal, and the current position of the mobile terminal based on the image information by the camera and GPS reception information is displayed on the web screen of the mobile terminal and transmitted to the center. The position-dependent mobile communication system according to any one of claims 1 to 11 , wherein