WO2010057349A1

WO2010057349A1 - A mobile instant communication method and system based on position service

Info

Publication number: WO2010057349A1
Application number: PCT/CN2008/073581
Authority: WO
Inventors: 曾海坚; 曾胜群
Original assignee: 深圳市时代经纬科技有限公司
Priority date: 2008-11-18
Filing date: 2008-12-18
Publication date: 2010-05-27

Abstract

A mobile instant communication method and system based on position service, the system includes two or more than two mobile terminals including GPS receiver and embedded GIS system (11), a mobile network gateway (12) and a Location Based Service (LBS) remote server (13). The embedded GIS system includes a GIS engine and a electronic map database. The mobile terminal is connected to the LBS remote server through the mobile network gateway. More than two mobile terminals can be grouped with each other in the LBS remote server. The mobile terminal online or interacting can send position information to online single friend or all the friends in interaction group. Receiving mobile terminal users receive the position information from sending mobile terminal, then the embedded GIS engine takes corresponding electronic map from the electronic map database as background, and the position information is displayed on the electronic map to allow the receiving mobile terminal users to know the position of opposite party, content of the sending information and occurred position intuitionally.

Description

Location-based mobile instant messaging method and system thereof

[1] Technical field

[2] The present invention relates to a mobile terminal with a GPS receiver, an embedded GIS system, a wireless network, and a mobile I

A location-based mobile instant messaging method based on technology such as M and a system for implementing the method. The mobile terminal is a multimedia mobile terminal with GPS inside. The GPS receiver can provide location information, and the multimedia function of the mobile terminal can generate information such as text, recording, photography, etc., and the information is sent to the wireless network function of the mobile terminal, such as GPRS/EDGE. On the remote server, where there is a free group, you can share it with other online friends to achieve so-called mobile instant messaging.

[3] Background Art

[4] Existing mobile terminals with GPS navigation functions, such as GPS mobile phones, personal navigation devices, etc., all use GPS satellite positioning technology and location service application technology to acquire GPS mobile phones or car navigation device holders. Azimuth longitude and latitude of a certain location in the world, through a set of positioning technology, currently obtains the location information of the mobile terminal such as latitude and longitude coordinate data, and provides the mobile terminal itself or others and the communication system to realize various positions and positions. Related business. However, the existing GPS mobile phone or personal navigator can only locate the user's location, and plan the driving route according to the determined destination, but there is no correlation between different GPS personal navigation devices. If you can't know the location information of the other party, only the LBS remote server can know the location between each GPS personal navigator. In this way, the following problems occur, such as when the personal navigator is used to record the vehicle location information, when one will After the vehicle of such personal navigator is illegally moved by others, the legal owner or police of the vehicle must find and track the existing location of the vehicle illegally moved by others, and can only continue through other communication methods, such as mobile phones. And LBS (Location Based

Sendees' abbreviation, the same below) The remote server operator makes a telephone call, letting the operator tell the existing location of the vehicle they are illegally moving, even if the legal owner of the vehicle or the policeman has the same model of GPS personal navigator , also need to do this, the same GPS personal navigator can not know the geographical location between each other. Existing GPS mobile terminals, such as GPS mobile phones, add GPS personal navigation functions based on mobile terminals, and their navigation functions are separated from those of mobile terminals.

[5] There is a PoC intercom mobile phone, which introduces direct point-to-point and point-to-multipoint voice communication services in the mobile network. It enables users to enjoy the popular two-way wireless intercom service using mobile phones. Users can quickly perform 'one-on-one' or 'one-to-many' calls by pressing a button on the phone, just like using a walkie-talkie. The same as the telephone. Unlike the walkie-talkie, which can only be used for close-talking, the push-to-talk service can reach the place where the mobile terminal network can be covered, with almost no distance restrictions. Mobile terminal intercom can make full use of the current mobile network, greatly reducing the operator's operating costs and user usage costs. However, technically, the mobile terminal intercom has a large delay compared with the traditional walkie-talkie, and the delay of several seconds will interrupt the thinking of the usual conversation. Therefore, it is considered that the PoC mobile terminal intercom is There are difficulties in popularization.

[6] Summary of the invention [7] An object of the present invention is to provide a location-based service in which a mobile terminal that can be in the same group can intuitively display a location information icon of all other users in a group on a self-owned mobile terminal. The mobile instant communication method, which not only allows the user to know his or her own location, but also knows the location of multiple other people, thus providing great opportunities for group activities that work outdoors and travel together. convenient. This is a new type of LBS service, which we call location interaction.

[8] The present invention also provides an instant communication system that implements the above method.

[9] The technical solution for implementing the present invention is: providing a location service-based mobile instant messaging method, including a multimedia mobile terminal with GPS, a mobile network gateway, an LBS remote server, and a mobile terminal embedded G _IS system, wherein The mobile terminal has a color display with QVGA and above resolution, and GPRS/EDGE wireless data access capability. The embedded GIS system includes electronic map data and a GIS engine for displaying map data on the screen of the mobile terminal, and the LBS remote server is An LBS remote server that can be attached to a mobile network, the LBS remote server including a mobile terminal interactive service part, a GIS database, a website service part, and the like.

[10] Specifically, the method includes:

[11] A location service based mobile instant communication method, comprising more than two mobile terminals with a GPS receiver, a mobile communication module and an embedded GIS system, a mobile network gateway and an LBS remote server, the embedded GIS The system includes an electronic map database and an embedded GIS engine for displaying map data on the display screen of the mobile terminal; the mobile terminal is connected to the LBS remote server through the mobile network gateway, and implements login or logout, location in the LBS remote server Interactive and free group, the mobile terminals in the same group can transmit information to each other, and the online transmitting mobile terminal can actually transmit the information including the location information to the LBS remote server according to the need; the online receiving mobile terminal moves through the internal The location information of the transmitting mobile terminal obtained by the communication module from the LBS remote server is displayed by the internal embedded GIS system in the form of a location information icon on the corresponding position of the electronic map of the display screen of the receiving mobile terminal, This, for mobile terminals in the group Users can understand each other's location with each other

[12] the information further includes multimedia information, where the multimedia information includes one or more of text information, image information, or voice information, and the mobile communication module of the online receiving mobile terminal downloads the above from the LBS remote server. One or more pieces of information in the multimedia information, the online receiving mobile terminal displays the display screen of the receiving mobile terminal by using an icon corresponding to the text information, image information or voice information through its internal embedded GIS system On the electronic map; thus, the mobile terminal users in the group can understand each other's location in real terms, and can also exchange multimedia information with location.

[13] The login or logout steps include:

[14] a) the mobile terminal sends a login command to the mobile network gateway according to the login interface specification;

[15] b) The mobile network gateway transmits the command to the LBS remote server via the Internet, and the communication processing and command parsing module parses the command according to the login interface specification;

[16] c) The parsed login command is sent to the login logic processing module for execution, the online user database is updated according to the execution result, and the result is returned to the mobile terminal, and the status display module is responsible for parsing and processing the reply of the LBS remote server, changing the mobile terminal Status display [17] d) The login logic processing module needs to notify the online friend of the login status of the mobile terminal user according to the friend relationship in the online user database;

[18] e) The registered mobile terminal will periodically send the heartbeat packet specified in the login interface specification to inform the server to maintain its online status;

[19] f) The logged-in mobile terminal can send out the logout command according to the login interface specification to log off its login status from the LBS remote server, and the LBS remote server is responsible for notifying its online friends; the interval between the two heartbeat packets exceeds the specified limit due to the fault. Between, will be considered by the LBS remote server to automatically log out.

[20] The location interaction steps include:

[21] a) The logged-in mobile terminal user sends a control command to the LBS remote server according to the interactive interface specification, and is processed by the interactive logic processing module after being parsed by the communication processing and the command parsing module; the interactive logic processing module can implement according to different commands. Initiation of an interactive group, withdrawal of an interactive group, joining an interactive group, or inviting others to join an interactive group, such as launching, exiting an interactive group, joining an interactive group, or inviting others to join an interactive group Information is stored in the location interaction database;

[22] b) In the interactive mobile terminal, it is determined to obtain its own location information from the GPS receiver, and then send the positioning heartbeat packet to the LBS remote server through the interactive interface specification, and the interactive logic processing module in the LBS remote server Updating the location information in the location interaction database according to the content of the packet, and sending it to other mobile terminals in the group as needed;

[23] c) the mobile terminal in the interaction, sending a positioning information packet with location information to a single/or all interactive friends, the information including text, photo, file, voice, etc.; the information to be interacted first according to the interactive interface protocol Uploaded to the LBS remote server in the form of subcontracting, which is buffered by the interactive logic processing module into the location interaction database and dispatched to the designated receiving mobile terminal;

[24] d) After the positioning information packet is transmitted to the mobile terminal, it is processed by the embedded GIS system inside the mobile terminal, and the position of the information is displayed in an intuitive form through the map display; on the other hand, according to the user operation The multimedia module displays the playback module to display or play the information.

[25] The instant communication method further includes a method of parallelization, and the specific steps are as follows:

[26] The intercom sending mobile terminal first selects an intercom object, which may be a single friend or all friends in the entire interactive group; the transmitting mobile terminal first sends a voice sending request to the LBS remote server, the LBS remote The server determines the status of the receiving mobile terminal to give a transmission request confirmation; after the sending mobile terminal obtains the confirmation, transmits the voice packet to the receiving mobile terminal through the LBS remote server relay; the voice packet carries control information, and the receiving mobile terminal determines according to the control information Whether there is a packet drop condition, if yes, send an error request retransmission; the LBS remote server relays the command, requesting that the mobile terminal resend the specified packet.

[27] providing a system for implementing the instant communication method, comprising two or more mobile terminals, a mobile network gateway and an LBS remote server with a GPS receiver, a mobile communication module and an embedded GIS system, The embedded GIS system includes an electronic map database and an embedded GIS engine for displaying map data on the display screen of the mobile terminal; the transmitting mobile terminal in the mobile terminal on the line sends the information including the location information to the LBS remotely. Server; other receiving mobile terminal that downloads the mobile terminal from the LBS remote server through its internal embedded GIS engine The location information is displayed in the form of a location information icon at a corresponding location of the electronic map of the display screen of the receiving mobile terminal.

[28] The mobile communication terminal includes the following functional modules:

[29] a) GPS module: receiving satellite signals, or real positioning information;

[30] b) mobile terminal baseband controller: the function realization body of the mobile terminal;

[31] c) QVGA color display module: used to display electronic maps, location information or multimedia information;

[32] d) Embedded GIS arch I engine and embedded GIS database: Embedded GIS bow | Engine is a program running in the base terminal controller of the mobile terminal, and the embedded GIS database is stored in the storage device of the mobile terminal. The electronic map data; the embedded GIS engine can retrieve the map vectorization information to be displayed from the embedded GIS database according to the input latitude and longitude information, and draw the map and related information on the display screen; [33] e) multimedia recording And playback function module: including image and audio recording and playback, the module can generate/play multimedia information such as photos, videos, voices, etc., for interactive communication between users;

[34] f) Communication function module: Realize communication between mobile terminal and LBS remote server.

[35] The mobile communication terminal can be in the form of a mobile phone, a PDA or a car navigation device.

[36] The LBS remote server includes:

[37] a) Communication and logic processing program: including communication processing and command parsing module, login logic processing module, interactive logic processing module, user management information module, etc., responsible for handling communication with the mobile terminal, and implementing the logic of the command;

[38] b) Back-end database: including user information data table, online user information table, interactive group information table, interactive message table, GIS database, buffer database, etc.;

[39] c) Back-end GIS system: including GIS engine and GIS database, responsible for mobile terminal and map-related analysis and processing, including uploading interest points, trajectory entry and storage, providing location retrieval, providing orientation analysis, and generating Electronic maps, etc.

[40] d) Website publishing background: Responsible for supporting the publishing of the map website, so that the location information, track information, location photos and other information of the mobile terminal can be displayed on the electronic map of the web page.

[41] The present invention has the following advantages and positive effects:

[42] 1. Realizing the position interaction of the electronic map on the mobile terminal, enabling the interactive parties to visually check the geographic parameters such as the position, speed and distance of the opposite party;

[43] 2. Combining the text, voice, etc. of the location information, the communication function provides unprecedented convenience for the communication of outdoor activities;

[44] 3, through the flow mode billing, the cost of group communication is lower;

[45] 4, can be implemented on the low-end mobile terminal platform;

[46] 5. The multimedia information of the interactive user's location and the combined location of the upload can be seen on the electronic map of the website page.

[47] In summary, the present invention closely integrates the GPS function with the function of the mobile terminal, in addition to realizing the navigation function of the ordinary GPS, the data transmission protocol through the mobile terminal, such as GPRS/EDGE/CDMA1X/3G, etc.

, the location information can be sent to the other party, so that the other party can understand the mutual location information.

[48] The LBS-based mobile terminal intercom of the present invention, due to the introduction of the exchange of map and real location information, The information input is supplemented during the blank period of the mobile terminal intercom, so the LBS and the mobile terminal intercom form an innovative combination, so that the present invention can bring great convenience and endless fun to the user.

[49] BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall configuration diagram of the present invention.

[51] Figure 2 is a block diagram of the user login or logout process.

[52] Figure 3 is a block diagram of the user location interaction.

4 is a block diagram showing the internal structure of a mobile terminal according to an embodiment of the present invention.

[54] Figure 5 is a schematic diagram of a frame with a positioning packet.

Figure 6 is a schematic illustration of a state of use of the present invention.

[56] Figure 7 is a schematic diagram of the process of conducting voice intercom between online friends.

[57] Specific implementation

The invention will now be described in further detail with reference to the accompanying drawings. It is to be understood that the invention is not to be construed as being limited to the embodiments. Rather, the invention may be susceptible to various alternatives, modifications, or equivalents, without departing from the spirit and scope of the invention as defined by the appended claims.

[59] FIG. 1 is an overall structural diagram of the present invention, which mainly includes a plurality of multimedia mobile terminals with GPS, a mobile network gateway, and an LBS remote server. As is well known to those skilled in the art, the present invention currently obtains accurate location information through a commercially available GPS system receiver, but any other technique that can provide location information would be considered equivalent to the invention.

[60] The embodiment of the present invention realizes communication between the mobile terminal A and the LBS remote server C by using GPRS/EDGE, and can also utilize faster CDMA or even 3G networks in the future. These technologies are collectively referred to as mobile networks, and the gateways thereof are The mobile terminal A is enabled to access the network connection device of the LBS remote server C on the Internet through the mobile network. In this embodiment, CMNET access using China Mobile is used. The LBS remote server C is actually composed of a plurality of networking servers, which mainly provide mobile terminal interactive services, GIS background services and website services, wherein the mobile terminal interactive services include various databases and interactive logic processing for recording mobile terminal user status. The program realizes free grouping control and information transmission between the mobile terminals; the G IS background service includes a GIS database and a GIS bow engine, and can perform geographical location analysis according to the location information uploaded by the mobile terminal user, and obtain the user's place and each user's location. The relative orientation between the two, the neighboring points of interest, the path planning, and the like are also analyzed, and the location information such as points of interest and trajectories obtained from the mobile terminal user are also analyzed and stored for forming UGC in the GIS database, that is, the user provides the content.

[61] Mobile terminal A obtains location information from its own GPS receiver, including latitude and longitude, speed, altitude, etc.

[62] according to a custom network transmission specification, through the command and data transmission protocol, via the mobile network gateway B, the above location information, interactive multimedia information, etc. are sent to the LBS remote server C;

[63] The server C receives the command from the mobile terminal A, performs corresponding processing and data forwarding, so that different mobile terminals can freely organize the interaction group and exchange information;

[64] After receiving the data with the location information sent by the other party, the mobile terminal A processes the electronic map data inside the mobile terminal through the embedded GIS engine, and displays it on the screen in an intuitive form;

[65] Other interactive information, such as voice information, text information or image information, through the mobile terminal center The processor processes and overlays the display on the map.

[66] The LBS remote server includes:

[67] a) Communication and logic processing program: including communication processing and command parsing module, login logic processing module, interactive logic processing module, user management information module, etc., responsible for handling communication with the mobile terminal, and implementing the logic of the command;

[68] b) Back-end database: including user information data table, online user information table, interactive group information table, interactive message table, GIS database, buffer database, etc.;

[69] c) Back-end GIS system: It includes two parts: GIS engine and GIS database. It is responsible for the analysis and processing of mobile terminal and map, including uploading and storing points of interest, track input, storage, providing location search, providing orientation analysis, and generating Electronic maps, etc.

[70] d) Website publishing background: Responsible for supporting the publishing of the map website, so that the location information, track information, location photos and other information of the mobile terminal can be displayed on the electronic map of the web page.

[71] As shown in Figure 2, Figure 2 is a block diagram of the user login or logout process.

[72] The specific steps of the login or logout process of the present invention are:

[73] 1 Login / Logout:

[74] a) The mobile terminal A sends a login command 1 to the mobile network gateway B according to the login interface specification 5;

[75] b) the mobile network gateway B transmits the command to the LBS remote server C via the Internet, and the communication processing and command parsing module ₆ parses the command according to the login interface specification 4;

[76] c) The parsed login command is sent to the login logic processing module 7 for execution, the online user database 8 is updated according to the execution result, and the result is returned to the mobile terminal A, and the status display 3 is responsible for parsing and processing the reply of the LBS remote server C, changing Status display on mobile terminal A;

[77] d) The login logic processing module 7 also needs to move the mobile terminal according to the friend relationship in the online user database 8.

A user's login status is notified to their online friends;

[78] e) The registered mobile terminal A will periodically send the heartbeat packet 4 specified in the login interface specification 5 to notify L

BS remote server C maintains its online status;

[79] f) The logged-in mobile terminal A can send the logout command 2 according to the login interface specification 5 to log off its login state from the LBS remote server C, and the LBS remote server C is responsible for notifying its online buddy; If the interval between the two exceeds the specified time, the LBS remotely is considered by the server C to automatically log out.

[80] As shown in Figure 3, Figure 3 is a block diagram of user location interaction.

[81] 2 location interaction

[82] a) The registered mobile terminal A user sends a control command 1 to the LBS remote server C according to the interactive interface specification 5, and is parsed by the communication processing and command parsing module 6, and then processed by the interactive logic processing module 7. The interactive logic processing module can implement interaction group initiation, exit interaction group, join interaction group, and invite others to join the interaction group according to different commands, and the related information is stored in the location interaction database 8; [83] b) The interactive mobile terminal A user must obtain the location information from the GPS module 2, and then send the positioning heartbeat packet 3 to the server through the interactive interface specification 5, and the interactive logic processing module 7 in the LBS remote server C according to The content of the jump packet updates the location information in the location interaction database 8, and Send it to other users in the group as needed;

[84] c) Mobile phone users in the interaction, can be single /

Or all the interactive friends send the positioning information package 4 with location information, such as text, photo, file, voice, etc.; the interactive information is first uploaded to the LBS remote server C in the form of subcontracting according to the interactive interface protocol 5, It is buffered by the interactive logic processing module 7 into the location interaction database 8 and dispatched to the designated recipients;

[85] d) After the positioning information packet 4 is transmitted to the mobile terminal A, on the one hand, it is processed by the embedded GIS system 10 in the mobile phone, and the location where the information occurs is displayed in an intuitive form through the map display 11; According to the user operation, the 12 module is displayed through the multimedia information display, and the information is displayed or played.

[86] Referring to FIG. 1 to FIG. 3, the workflow of the system of the present invention is described as follows: Through the operation of the user, the mobile terminal baseband controller will generate different commands, and convert according to the communication protocol agreed with the LBS remote server C. For a specific TCP/IP communication packet, the mobile network gateway B is sent through the communication function module; the mobile network gateway B will forward the communication packet to the LBS remote server C located on the Internet according to the IP address; after the LBS remote server C interprets the execution command, the same Through the format conversion, a reply packet is formed, and is sent to the communication function module of the mobile terminal A through the mobile network gateway B, and the module notifies the mobile terminal baseband controller for processing through an internal mechanism.

FIG. 4 is a block diagram showing the internal structure of a mobile terminal according to an embodiment of the present invention. The mobile terminal embodiment is a GSM standard multimedia mobile terminal, which mainly includes the following functional modules:

[88] a) GPS module: receiving satellite signals, or real positioning information;

[89] b) mobile terminal baseband controller: the function realization body of the mobile terminal;

[90] c) QVGA color display module: Due to the display of electronic maps, photos, etc., QVGA color display is generally required, but it does not exclude the simplified application in individual special embodiments to reduce the requirements on display indicators. ;

[91] d) Embedded GIS bow I engine and embedded GIS database: Embedded GIS bow | Engine is a program running in the mobile terminal baseband controller, while embedded GIS database is stored in mobile terminal storage devices such as The electronic map data in the T-Flash card; the embedded GIS engine can retrieve the map vectorization information to be displayed from the embedded GIS database according to the input latitude and longitude information, and draw the map and related information on the display screen;

[92] e) Multimedia recording and playback function module: This embodiment includes recording and playback of images and audio, and the module can generate/play multimedia information such as photos, videos, voices, etc., for interactive communication between users;

[93] f) Communication function module: To realize communication between mobile terminal A and LBS remote server C, this embodiment uses GPRS/EDGE standard. The present invention can also use any method capable of implementing mobile communication, such as a CDMA lx or even a 3G network.

[94] FIG. 5 is a diagram of a frame with a positioning information packet including a specific head and tail identification, commands and subcommands, a user ID, a packet sequence number for packet transmission control, and location information including longitude and Latitude and data are determined according to different commands and subcommands, and the maximum length is no more than 1024 bytes. After obtaining the positioning information packet, the mobile terminal A parses through a customized communication protocol, and the location information is sent to the embedded GIS system for analysis, and the corresponding electronic map is displayed as a background; Orders and content are represented by specific icons that overlap on the map background. For example: In the interaction, the mobile terminal user periodically reports the heartbeat packet of its own location, and receives the content of the mobile terminal to display the related information.

[95] The mobile terminals in this paper include mobile communication terminals such as mobile phones, car GPS navigators, and PDAs.

[96] Figure 6 is a basic diagram of location interaction: After two or more mobile terminals A enter the interactive state, the mobile terminal periodically sends a heartbeat packet to the mobile terminal to receive its own location, and the mobile terminal uses the content inside, The effect shown in Fig. 6 is shown, such as Zhang San, Li Si, Wang Wu and Liu Liu in the same group, which can know each other's positions at a glance on their respective mobile terminals. This situation is beneficial to mutual understanding of the other party's location information, and does not need to obtain the location information of other personnel from the waiter from the LBS remote server C through a communication device such as a mobile phone. This system is particularly suitable for police to track stolen vehicles. Of course, other information, such as voice information, text information or image information, can be displayed on the map as a background and displayed by other different icons (not shown).

The process of voice intercommunication between online friends is introduced in conjunction with FIG. 7: the sending mobile terminal first selects an intercom object (ie, receives the mobile terminal A2), and the object may be a single friend or all friends in the entire interactive group; The mobile terminal A1 first sends a voice transmission request to the LBS remote server C, and the LBS remote server C needs to determine the status of the receiving mobile terminal A2 to give a transmission request confirmation; after the mobile terminal A1 obtains the confirmation, it transits through the LBS remote server C to receive the mobile. The terminal A2 sends a voice packet; the voice packet carries control information, and the receiving mobile terminal A2 can determine whether there is a packet loss according to the control information, if yes, send an error request retransmission; the LBS remote server C relays the command, requests to send the mobile terminal A1 resends the specified package.

Claims

Claims Claims

1 . A location service based mobile instant communication method, comprising: more than two mobile terminals, a mobile network gateway and an LBS remote server with a GPS receiver, a mobile communication module and an embedded GIS system, The embedded GIS system includes an electronic map database and an embedded GIS engine for displaying map data on a display screen of the mobile terminal; the mobile terminal is connected to the LBS remote server through the mobile network gateway, and is in the LBS remote server. To realize login or logout, location interaction and free group, online mobile terminals can transmit information to each other, and the transmitting mobile terminal in the same group actually transmits information including location information to the LBS remote server as needed; online receiving mobile The terminal obtains the location information of the mobile terminal from the LBS remote server through its internal mobile communication module, and displays its location information in the form of a location information icon on the electronic map of the display screen of the receiving mobile terminal through the internal embedded GIS system. Corresponding position, thus, group The mobile terminal users in the real world can understand each other's location.

2. The location service based mobile instant messaging method according to claim 1, wherein: the information further comprises multimedia information, and the multimedia information comprises one or more of text information, image information or voice information. When the mobile communication module of the online receiving mobile terminal downloads one or more of the information in the multimedia information from the LBS remote server, the online receiving mobile terminal passes through its internal embedded GIS system, The corresponding icon of the text information, the image information or the voice information is displayed on the electronic map of the display screen of the receiving mobile terminal; thereby realizing that the mobile terminal users in the group can understand each other's position and can also perform position with each other. Multimedia information exchange.

3. The location service based mobile instant messaging method according to claim 1 or 2, wherein: the step of logging in or logging out comprises:

a) the mobile terminal sends a login command to the mobile network gateway according to the login interface specification;

b) the mobile network gateway transmits the command to the LBS remote server via the Internet, and the communication processing and command parsing module parses the command according to the login interface specification;

c) The parsed login command is sent to the login logic processing module for execution, the online user database is updated according to the execution result, and the result is returned to the mobile terminal, and the status display module is responsible for parsing and processing the reply of the LBS remote server, changing the status display on the mobile terminal ;

d) the login logic processing module needs to notify the online friend of the login status of the mobile terminal user according to the friend relationship in the online user database;

e) The registered mobile terminal will periodically send the heartbeat packet specified in the login interface specification to notify the server to maintain its online status;

f) The logged-in mobile terminal can cancel the login status from the LBS remote server according to the login interface specification sending the logout command, and the LBS remote server is responsible for notifying the online buddy; the interval between the two heartbeat packets exceeds the specified time due to the failure, It will be considered by the LBS remote server to automatically log out.

4. The location service based mobile instant messaging method of claim 3, wherein: the location interaction step comprises:

a) The logged-in mobile terminal user sends a control command to the LBS remote server according to the interactive interface specification, and is processed by the interaction logic processing module after being parsed by the communication processing and the command parsing module; the interactive logic processing module can implement the interaction group according to different commands. Launching, exiting an interactive group, joining an interactive group, or inviting others to join an interactive group, where the information of the interactive group’s initiation, exiting an interactive group, joining an interactive group, or inviting others to join an interactive group is stored in Location interaction database;

b) The mobile terminal in interaction, obtains its own location information from the GPS receiver, and then sends the positioning heartbeat packet to the LBS remote server through the interactive interface specification. The interactive logic processing module in the LBS remote server bases and jumps. The content of the package updates the location information in the location interaction database and sends it to other mobile terminals in the group as needed;

c) interactive mobile terminal, to single /

Or all interactive friends send location information packets with location information, such as text, photos, files, voices, etc.; the interactive information is first uploaded to the LBS remote server in the form of subcontracting according to the interactive interface protocol, by interactive logic The processing module buffers it into the location interaction database and dispatches it to the designated receiving mobile terminal;

d) After the positioning information packet is transmitted to the mobile terminal, on the one hand, it is processed by the embedded GIS system inside the mobile terminal, and the position where the information occurs is displayed in an intuitive form through the map display; on the other hand, the multimedia information is passed according to the user operation. Display the playback module to display or play the information.

5. The location service-based mobile instant messaging method according to claim 4, wherein: the instant messaging method further comprises a method of parallelizing, the specific steps of which are as follows:

The intercom sending mobile terminal first selects an intercom object, and the object may be a single friend or all friends in the entire interactive group; the transmitting mobile terminal first sends a voice sending request to the LBS remote server, and the LBS remote server determines to receive The status of the mobile terminal gives a transmission request confirmation; after the sending mobile terminal obtains the confirmation, the mobile terminal transmits a voice packet to the receiving mobile terminal through the LBS remote server relay; the voice packet carries control information, and the receiving mobile terminal determines whether there is any occurrence according to the control information. In the case of a packet drop, if there is, an error request retransmission is sent; the LBS remote server relays the command, requesting that the mobile terminal resend the specified packet.

6. A system for implementing the instant communication method, comprising: more than two mobile terminals, a mobile network gateway and an LBS remote server with a GPS receiver, a mobile communication module and an embedded GIS system, The embedded GIS system includes an electronic map database and an embedded GIS engine for displaying map data on a display screen of the mobile terminal; the transmitting mobile terminal in the uplink mobile terminal actually transmits information including the location information to The LBS remote server; the other receiving mobile terminal on the line displays the location information of the mobile terminal downloaded from the LBS remote server through the internal embedded GIS engine, and displays the location information in the form of the location information icon. The corresponding location of the electronic map of the display of the mobile terminal.

7. The system of claim 6 wherein: said mobile communication terminal comprises the following Energy module:

a) _GPS module: Receive satellite signals, or actual positioning information;

b) mobile terminal baseband controller: function realization main body of the mobile terminal;

c) QVGA color display module: used to display electronic maps, location information or multimedia information; d) embedded GIS bow I engine and embedded GIS database: embedded GIS bow I engine is a section running in the mobile terminal baseband controller The program, and the embedded GIS database is the electronic map data stored in the storage device of the mobile terminal; the embedded GIS engine can retrieve the map vectorization information to be displayed from the embedded GIS database according to the input latitude and longitude information, in the display Map and related information on the screen;

e) Multimedia recording and playback function module: including image and audio recording and playback, the module can generate/play photo, video, voice and other multimedia information for interactive communication between users; f) communication function module: realize mobile terminal Communication with the LBS remote server.

8. The system of claim 7 wherein: said mobile communication terminal is in the form of a handset, PDA or car navigation system.

9. The system according to claim 6, wherein: the LBS remote server refers to a server that is connected to the Internet and is accessible by the mobile terminal through the mobile network gateway, and a program running thereon and a saved database, specifically including :

a) Communication and logic processing program: including communication processing and command parsing module, login logic processing module, interactive logic processing module, user management information module, etc., responsible for handling communication with the mobile terminal, and implementing the command logic;

b) Back-end database: including user information data table, online user information table, interactive group information table, interactive message table, GIS database, buffer database, etc.;

c) Back-end GIS system: It includes two parts: GIS engine and GIS database. It is responsible for the analysis and processing of mobile terminal and map related, including uploading interest points, trajectory entry and storage, providing location retrieval, providing orientation analysis, generating electronic maps, etc. Wait;

d) Website publishing background: Responsible for supporting the publishing of the map website, so that the location information, track information, location photos and the like of the mobile terminal can be displayed on the electronic map of the webpage.