CN107094125B

CN107094125B - Communication server, vehicle-mounted terminal and vehicle-mounted communication method

Info

Publication number: CN107094125B
Application number: CN201610088271.6A
Authority: CN
Inventors: 曾乙平
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2016-02-17
Filing date: 2016-02-17
Publication date: 2020-07-17
Anticipated expiration: 2036-02-17
Also published as: CN107094125A

Abstract

The embodiment of the invention provides a communication server, a vehicle-mounted terminal and a vehicle-mounted communication method. The communication server includes: a communication group management unit for creating one or more communication groups based on first traffic information, the first traffic information being information related to traffic conditions of an overall road; and the communication group distribution unit is used for distributing the communication group for the vehicle-mounted terminal according to the position information of the vehicle-mounted terminal. The embodiment of the invention can support the communication related to road driving.

Description

Communication server, vehicle-mounted terminal and vehicle-mounted communication method

Technical Field

The present invention relates to communications technologies, and in particular, to a communications server, a vehicle-mounted terminal, and a vehicle-mounted communications method.

Background

With the deep development of communication technology, a communication system can be built by means of a user terminal such as a smart phone, a tablet personal computer and the like and a communication network, and remote communication between people is carried out. In one example, the communication system is a network chat system, which may be a one-to-one chat (private chat) or a multi-person chat (group chat).

For the multi-user chat system, after the administrative user creates the communication group, the administrative user may invite other users to join the communication group, or other users may actively join the communication group after searching the information of the communication group. In one example, the administrative user refers to the user that created the communication group. The communication group is composed of one or more member users, and the member users can chat, share information and the like. Wherein, the member user refers to all users (including the management user) in the communication group.

With the development of cities and the convenience of transportation, the time of people on roads is increasing day by day, and the communication demand in the road driving process is more and more prominent.

Disclosure of Invention

The embodiment of the invention provides a communication server, a vehicle-mounted terminal and a vehicle-mounted communication method, and aims to support communication related to road driving.

In one example, a communication server includes:

a communication group management unit for creating one or more communication groups based on first traffic information, the first traffic information being information related to traffic conditions of an overall road; and

and the communication group distribution unit is used for distributing a communication group for the vehicle-mounted terminal according to the position information of the vehicle-mounted terminal.

In one example, a vehicle-mounted terminal includes:

a position information acquisition unit for acquiring position information of the vehicle-mounted terminal;

the vehicle-mounted chat unit is used for sending a communication group joining request carrying the position information after being triggered;

the group message input unit is used for generating a first group message to be sent;

a group message output unit for presenting the received second group message; and

and the network access unit is used for sending the position information and the first group message to a communication server and receiving the second group message.

In one example, a vehicle communication method includes:

creating one or more communication groups according to first traffic information, wherein the first traffic information is information related to the traffic condition of the whole road;

and receiving a communication group joining request which is sent by the vehicle-mounted terminal and carries position information, and distributing a communication group for the vehicle-mounted terminal according to the position information.

Drawings

Fig. 1 is a schematic diagram of a communication server 100 according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a communication server 200 according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the components of the in-vehicle terminal 300 according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of the components of the telematics system 400 in the embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating a user terminal 500 according to an embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating a user terminal 600 according to an embodiment of the present invention.

Fig. 7 illustrates a communication system 700 provided by an embodiment of the present invention.

Fig. 8 is a flowchart illustrating an on-board communication method 800 according to an embodiment of the invention.

Fig. 9 is a flowchart illustrating a vehicle-mounted communication method 900 according to an embodiment of the present invention.

Fig. 10 is a flowchart illustrating a vehicle-mounted communication method 1000 according to an embodiment of the present invention.

Fig. 11 is a schematic flow chart of the vehicle-mounted terminal joining the communication group in the embodiment of the present invention.

Fig. 12 is a flowchart illustrating a communication server managing a communication group according to an embodiment of the present invention.

Fig. 13 is a schematic flow chart illustrating that the vehicle-mounted terminal updates the location information to the communication server according to the embodiment of the present invention.

FIG. 14 is a partial schematic view of a map according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

An embodiment of the present invention provides a communication server that creates and maintains a communication group related to road travel from, for example, first traffic information, and provides a communication environment related to road travel to a vehicle-mounted terminal. The first traffic information is information related to traffic conditions of the whole road, and the vehicle-mounted terminal is an electronic device in a running vehicle. In one example, the in-vehicle terminal is an in-vehicle information system mounted on a vehicle. In one example, the telematics System may be mounted in a central location in front of the driver's seat, including a display, a radio, a media playing function, a Global Positioning System (GPS), and the like. In one example, the in-vehicle terminal is a user terminal held by a user (such as a driver, a passenger, and the like) located on a vehicle, and may be a communication device such as a smart phone and a tablet computer. In an example, the user terminal may be connected to the vehicle information system through a Universal Serial Bus (USB), bluetooth, wifi, or the like, and present information published in the communication group to which the user terminal is added by using a media playing function of the vehicle information system, for example, playing a voice chat content of the communication group by using the vehicle information system.

Fig. 1 is a schematic diagram of a communication server 100 according to an embodiment of the present invention. In one example, the communication server 100 is a computer device comprising: a communication group management unit 101 and a communication group assignment unit 102. Wherein the communication group management unit 101 is configured to create one or more communication groups according to the first traffic information. In one example, the first traffic information refers to information related to traffic conditions of an overall road. The communication group allocation unit 102 is configured to allocate a communication group to the vehicle-mounted terminal according to the location information of the vehicle-mounted terminal.

In one example, the communication group management unit 101 obtains the number of terminal connections on each road, determines the number of communication groups on the road according to the number of terminal connections and a third preset value, and sets the coverage of one or more communication groups based on the number of communication groups. In one example, the third preset value is a pre-estimated number of member users in each communication group, and may be an optimal member number set according to historical data. For example, it is known from statistics of historical data that, in most cases, there are about 100 member users in the communication group, and the third preset value is taken as 100. In one example, the terminal connection number refers to the number of vehicle-mounted terminals accessing the communication server on a certain road. Accordingly, the communication group assigning unit 102 determines within the coverage of which communication group the position information of the in-vehicle terminal falls, thereby specifying a corresponding communication group for the in-vehicle terminal.

In one example, the communication group management unit 101 may dynamically create the communication group according to first traffic information such as road division, driving direction, traffic index, number of terminal connections, road coordinates, and the like. In one example, communication groups are established in units of roads, with one or more communication groups established per road. In the embodiment of the present invention, the road may be a basic driving unit (for example, an actual road described on a map) designed in a traffic plan, or may be a traffic area divided according to other rules. Further, communication groups may be established separately for different driving directions on each road. For example, route number 1 establishes one or more communication groups in the north-south direction (e.g., a1, a2, A3, etc.), and route number 1 also establishes one or more communication groups in the north-south direction (e.g., B1, B2, B3, B4, etc.).

In one example, the traffic index refers to a traffic congestion index or a traffic operation index, and is a numerical value reflecting road congestion or smoothness. In one example, the traffic index ranges from 0 to 10 and is divided into five levels, namely "clear", "substantially clear", "light congestion", "medium congestion", "heavy congestion", and a higher value indicates a more serious traffic congestion condition. In one example, the terminal connection number refers to the number of in-vehicle terminals accessing the communication server. In one example, the road coordinates are information for indicating the geographical location of the road, and may be road longitude and latitude, GPS coordinates, or the like. The road longitude and latitude refers to a geographic coordinate system consisting of longitude and latitude.

In one example, the number of communication groups, coverage, etc. may be adjusted based on traffic index, number of terminal connections, etc. For example, when the value of the traffic index on a certain road is increased, the number of communication groups on the certain road may be increased, or the coverage area of each communication group may be reduced. For another example, when the actual number of members of a certain communication group is greater than the first preset value, the communication group may be split, the coverage area of the communication group is reduced, and a new communication group is added on the road. For another example, when the actual number of members of a plurality of communication groups adjacent to each other in a certain road is smaller than the second preset value, the plurality of communication groups may be merged into a new communication group. In one example, the actual membership refers to the number of in-vehicle terminals accessing a certain communication group.

In one example, the coverage of the communication group may be set according to the road longitude and latitude. For example, the entire latitude and longitude range of the route 1 is (116.4358091354, 39.9085182400) to (116.4346075058, 39.9249428832), and the latitude and longitude range is expressed in the form of (longitude, latitude). Assuming that 10 communication groups are set for the route 1, each communication group has a covered longitude and latitude range, which is a part of the whole longitude and latitude range of the route 1.

In one example, the communication group management unit 101 sets a group Identification (ID) for each communication group created to uniquely indicate the communication group. In one example, the communication group management unit 101 is configured to maintain and manage the created communication group, and adjust the number of communication groups, the coverage area, and the like according to the continuously updated first traffic information.

In one example, the communication group assigning unit 102 is configured to receive location information sent by a vehicle-mounted terminal, and assign a communication group to the vehicle-mounted terminal according to the location information. In one example, when the position information of the in-vehicle terminal 1 falls within the coverage of the communication group N, the communication group assigning unit 102 determines to assign the communication group N to the in-vehicle terminal 1. In one example, after determining that the in-vehicle terminal 1 is currently accessed to the communication group N, the communication group assigning unit 102 distributes the group message of the other user in the communication group N to the in-vehicle terminal 1, and distributes the group message of the in-vehicle terminal 1 to the other user in the communication group N.

Further, the communication group assigning unit 102 updates the communication group of the in-vehicle terminal according to the position information dynamically updated by the in-vehicle terminal. Further, the communication group assigning unit 102 sends a communication group migration message to the in-vehicle terminal when the communication group of the in-vehicle terminal is changed.

The communication server 100 further includes: a group message forwarding unit 103, configured to forward the group message for the member users in each created communication group. In one example, the member user in the communication group refers to a vehicle-mounted terminal accessing the communication group.

In one example, a communication group is established by the communication server 100, not by the in-vehicle terminal, and thus there is no concept of managing users, all of which are equal in authority.

Fig. 2 is a schematic diagram of a communication server 200 according to an embodiment of the present invention. In one example, the communication server 200 includes: a processor 201, a memory 202 holding an in-vehicle chat application 203, a network communication interface 204, and a database 205.

In one example, the in-vehicle chat application 203 stored in the memory 202 and executed by the processor 201 includes: a communication group management unit 213 and a communication group assignment unit 223. In one example, the communication group management unit 213 may implement the same or similar functions as the communication group management unit 101 in fig. 1, and the communication group assignment unit 223 may implement the same or similar functions as the communication group assignment unit 102 in fig. 1, which will not be described herein.

The network communication interface 204 is used for connecting with a communication network to realize communication with a plurality of vehicle-mounted terminals. For example, the network communication interface 204 is configured to receive a communication group join request sent by the vehicle-mounted terminal, so that the communication group assignment unit 223 assigns an appropriate communication group to the vehicle-mounted terminal according to the location information carried in the communication group join request. In one example, the communication network is the Internet.

The database 205 is used for storing information related to the communication group managed by the communication group management unit 213, and includes: the number of communication groups, member information (including member identification, member address, etc.) of each communication group, the coverage of each communication group, etc.

In one example, the in-vehicle chat application 203 further includes: a group message forwarding unit 233, configured to forward the group message for the member users in each communication group through the network communication interface 204. Specifically, when receiving a group message sent by a vehicle-mounted terminal, the group message forwarding unit 233 copies the group message in multiple copies according to the member information of the communication group to which the vehicle-mounted terminal belongs, and forwards the copied group message to other users in the communication group.

Fig. 3 is a schematic diagram of the components of the in-vehicle terminal 300 according to the embodiment of the present invention. In one example, the in-vehicle terminal 300 includes: vehicle-mounted chat unit 301, location information acquisition unit 302, network access unit 303, group message input unit 304, and group message output unit 305.

The vehicle-mounted chat unit 301 is configured to send a communication group join request carrying location information to the communication server 100 after being triggered. In one example, the in-vehicle chat unit 301 is an application installed on an in-vehicle information system or a user terminal, and has a special user interface, and a user can trigger the in-vehicle chat unit 301 to issue a communication group join request by clicking a corresponding button on the interface.

The location information acquiring unit 302 is used for providing location information of the in-vehicle terminal 300. In one example, the location information acquiring unit 302 is a GPS locator for acquiring latitude and longitude, etc. of the in-vehicle terminal 300.

The network access unit 303 is configured to send the location information to the communication server 100, transmit a first group message to the communication server 100, and provide a second group message forwarded by the communication server 100 to the group message output unit 305.

The group message input unit 304 is configured to generate the first group message. In one example, the first group message is a group message sent by the in-vehicle terminal 300, and may be text information, voice information, video information, and the like, and the group message input unit 304 is an input device such as a keyboard, a touch screen, a microphone, a camera, and the like.

The group message output unit 305 is configured to present the received second group message to the user of the in-vehicle terminal 300. In one example, the second group message is a group message sent by another user in a communication group in which the vehicle-mounted terminal is located, and the group message output unit 305 is an output device such as a display screen, a speaker, or a loudspeaker.

Further, the in-vehicle chat unit 301 is configured to: a dynamic frequency is generated according to the second traffic information, and the updated location information is obtained from the location information obtaining unit 302 according to the dynamic frequency and is sent to the communication server 100 through the network access unit 303. In one example, the second traffic information refers to information related to traffic conditions of the in-vehicle terminal 300. In one example, the dynamic frequency refers to a time interval for obtaining the geographical location of the vehicle-mounted terminal 300. In one example, the dynamic frequency is determined according to an "intersection distance" that is a distance between the current position of the in-vehicle terminal 300 and the next intersection, and a vehicle driving speed of the in-vehicle terminal 300.

Fig. 4 is a schematic diagram of the components of the telematics system 400 in the embodiment of the present invention. In one example, the telematics system 400 includes: a vehicle chat unit 401, a navigation unit 402, a car communication unit 403, a display screen 404, a vehicle multimedia unit 405.

The vehicle-mounted chat unit 401 is configured to send a communication group join request carrying location information to the communication server 100 after being triggered. Further, the in-vehicle chat unit 401 obtains updated location information from the navigation unit 402 according to the dynamic frequency, and transmits the updated location information to the communication server 100 through the car communication unit 403. In one example, the in-vehicle chat unit 401 is an application installed in the in-vehicle information system 400.

The car communication unit 403 is a device for the car to communicate with the outside. In one example, the car communication unit 403 includes: computer network communication systems, vehicle-mounted short-range wireless communication systems, and the like. For example, the car communication unit 403 may be a communication device such as an internet terminal or a mobile phone, and may be capable of sending and receiving mail, accessing internet, making a call, and the like.

The display screen 404 provides an information display interface for the telematics system 400. In one example, the second group of messages received by the in-vehicle chat unit 401 may be presented on the display 404.

The in-vehicle multimedia unit 405 has a media playing function, and can play the voice or video chat content received by the in-vehicle chat unit 401 to the user of the in-vehicle information system 400.

Fig. 5 is a schematic diagram illustrating a user terminal 500 according to an embodiment of the present invention. In one example, the user terminal 500 includes: the vehicle-mounted chat system comprises a vehicle-mounted chat unit 501, a GPS positioning unit 502, a terminal communication unit 503, a touch display screen 504, a microphone 505, a camera 506 and a loudspeaker 507.

In one example, the user terminal 500 may be an electronic device such as a smartphone, a tablet computer, a smart wearable device, etc. provided with the in-vehicle chat unit 501. The in-vehicle chat unit 501 may implement the same or similar functionality as the in-vehicle chat unit 301 of fig. 3. In one example, the terminal communication unit 503 may include a cellular communication module such as 2G, 3G, 4G, 5G, and the like, and may also include a short-range wireless communication module such as wifi, bluetooth, and the like.

Fig. 6 is a schematic diagram illustrating a user terminal 600 according to an embodiment of the present invention, where the user terminal 600 may utilize a media playing function of a vehicle information system. In one example, the user terminal 600 includes: vehicle chat unit 601, GPS positioning unit 602, terminal communication unit 603, touch screen display 604, microphone 605, camera 606, and vehicle information system interface 607.

In one example, the user terminal 600 may be an electronic device such as a smartphone, a tablet computer, a smart wearable device, etc. provided with the in-vehicle chat unit 601. The in-vehicle chat unit 601 may implement the same or similar functionality as the in-vehicle chat unit 301 in fig. 3. In one example, the in-vehicle chat unit 601 connects to an in-vehicle information system of a vehicle in which the user terminal 600 is located through the in-vehicle information system interface 607, and controls the in-vehicle information system to play a voice group message and the like.

Fig. 7 illustrates a communication system 700 provided by an embodiment of the present invention. In one example, the communication system 700 includes a communication server 701, one or more in-vehicle terminals 702, and a network 703 connecting the two. The in-vehicle terminal 702 acquires the position information (such as GPS coordinates, longitude and latitude, and the like) of the vehicle in which the vehicle is currently located through a GPS positioning system, and establishes a connection with the communication server 701 through the network access unit 303 of the in-vehicle terminal 702. In one example, the in-vehicle terminal 702 is an in-vehicle information system installed on a vehicle. In one example, the in-vehicle terminal 702 is an electronic device held by a person located on a vehicle. In an example, the communication server 701 and the in-vehicle terminal 702 may establish communication by using a socket (socket) long connection, or may perform communication based on a User Datagram Protocol (UDP).

Fig. 8 is a flowchart illustrating an on-board communication method 800 according to an embodiment of the invention. In one example, the in-vehicle communication method 800 includes the following operations.

At step 801, one or more communication groups are created from first traffic information. The first traffic information is information related to traffic conditions of the whole road.

In step 802, a communication group joining request with location information sent by a vehicle-mounted terminal is received.

In step 803, a communication group is assigned to the in-vehicle terminal based on the location information.

In one example, the in-vehicle communication method 800 is implemented by the communication server 100.

Fig. 9 is a flowchart illustrating a vehicle-mounted communication method 900 according to an embodiment of the present invention. In one example, the in-vehicle communication method 900 includes the following operations.

In step 901, the number of terminal connections on each road is acquired.

In step 902, the number of communication groups on the road is determined according to the number of terminal connections and a third preset value.

In step 903, the coverage of the one or more communication groups is set based on the number of communication groups.

In step 904, a communication group join request with location information sent by the vehicle-mounted terminal is received.

In step 905, a communication group is assigned to the in-vehicle terminal according to the location information and the set coverage of the communication group.

In step 906, the location information dynamically updated by the in-vehicle terminal is received, and the communication group of the in-vehicle terminal is updated according to the updated location information.

In one example, the location information of the in-vehicle terminal is updated according to the dynamic frequency. When the value of the dynamic frequency is small, the updating of the position information is frequent. In one example, the location information received by the communication server twice before and after is P1 and P2, respectively, and assuming that both the location information fall within the coverage of the communication group N, the communication group of the in-vehicle terminal is not changed when the communication group of the in-vehicle terminal is updated according to the updated location information in step 906.

In step 907, a communication group migration message is sent to the in-vehicle terminal when the communication group of the in-vehicle terminal is changed.

In step 908, when the last call instruction of the vehicle-mounted terminal is received, the group message related to the last call instruction is forwarded to the communication group before the vehicle-mounted terminal is migrated.

In one example, the group message related to the last talk instruction is a voice chat content issued by the in-vehicle terminal. In one example, the group message associated with the last call instruction is a formatted notification, such as a "trouble reminder" or the like, generated by the communication server upon receipt of the last call instruction.

In one example, the location information received by the communication server twice before and after is P1 and P2, respectively, and assuming that P1 falls within the coverage of the communication group N and P2 falls within the coverage of the communication group X, the communication server is to migrate the in-vehicle terminal from the communication group N to the communication group X. In this case, the communication group before the in-vehicle terminal is migrated is communication group N.

It can be seen that the location information of the vehicle-mounted terminal may dynamically change along with the road driving, that is, the vehicle-mounted terminal may continuously join or leave the communication group during the road driving. Further, the setting of the communication group will also change dynamically with the number of terminal connections. The dynamic changes of the two aspects are controlled by the communication server, so that seamless running communication experience is provided for the vehicle-mounted terminal.

Fig. 10 is a flowchart illustrating a vehicle-mounted communication method 1000 according to an embodiment of the present invention. In one example, the in-vehicle communication method 1000 includes the following operations.

In step 1001, position information of the in-vehicle terminal is acquired.

In step 1002, a communication group join request carrying the location information is sent, so as to request to join a communication group created according to the first traffic information. In one example, the first traffic information is information related to traffic conditions of an overall road.

In step 1003, a first group message issued in the communication group is generated and/or a second group message issued in the communication group is received.

In one example, the first group message is a group message sent by the in-vehicle terminal 300, and the second group message is a group message sent by another user in a communication group in which the in-vehicle terminal 300 is located.

Further, the in-vehicle communication method 1000 further includes operations of step 1004 and step 1005.

In step 1004, a dynamic frequency is generated based on second traffic information, which is information related to traffic conditions of the in-vehicle terminal 300.

In one example, step 1004 is specifically: and determining the dynamic frequency according to the intersection distance and the vehicle running speed.

In step 1005, the updated location information is obtained according to the dynamic frequency and sent out.

In one example, the in-vehicle communication method 1000 is implemented by the in-vehicle terminal 300.

In step 1101, the in-vehicle terminal sends a communication group join request to the communication server, carrying the location information of the in-vehicle terminal.

In step 1102, after the communication server verifies the vehicle-mounted terminal, the vehicle-mounted terminal is added to a corresponding communication group according to the position information of the vehicle-mounted terminal. That is, before the in-vehicle terminal uses the in-vehicle chat application, authentication is required.

In step 1103, the communication server issues the chat content (i.e., the second group message) of the other users in the communication group to the in-vehicle terminal, and also issues the chat content (i.e., the first group message) generated by the in-vehicle terminal to the other users in the communication group.

Assume that there is a member user A, B, C, D in the communication group X, and the communication server records member identification, member address, and the like of the communication group X. When receiving the voice chat content of the member user a, the communication server determines that the member user a belongs to the communication group X, and finds that there are other users B, C, D in the communication group X by searching the member identifier of the communication group X, and then the communication server sends the voice chat content of the member user a to the member addresses of the other users B, C, D, thereby realizing the group chat function. In one example, the voice chat content sent by the member user to the communication server, and the voice chat content forwarded by the communication server to the member user, can be encapsulated in UDP.

In step 1201, the communication server obtains the road division condition from the city map, and sets one or more communication groups in advance for each road. In one example, the coverage radius of the plurality of communication groups is the same or equivalent, for example, each communication group may cover 1 km of area on the road.

In step 1202, the communication server collects first traffic information at predetermined time intervals, and adjusts communication group settings on the road based on the first traffic information.

The first traffic information refers to information related to traffic conditions on the road. In one example, the first traffic information may be: road division, driving direction, traffic index, number of terminal connections, road coordinates, etc. In one example, the communication group setting comprises: the number of communication groups, the coverage area of each communication group, etc.

In one example, the method by which the communication server adjusts communication group settings is as follows. When the current road is congested and vehicles in a unit road area are more, the communication server divides the communication group of which the actual membership exceeds a first preset value into a plurality of communication groups, sets longitude and latitude ranges of the plurality of communication groups and redistributes member users of the communication groups. When the current road runs smoothly and vehicles in a unit road area are few, the communication server merges a plurality of communication groups of the current road, so that the actual member number of the merged communication groups is not lower than a second preset value, and the communication groups are ensured to be in an active state all the time. In one example, the first and second preset values are upper and lower threshold values, respectively.

In one example, the communication server adjusts the number of communication groups by assuming that the length of the road 1 in the first direction is L meters, the number of terminal connections of the road 1 in the first direction is N, the third preset value is X, when N < X, 1 communication group is created for the road 1, when N > X, the number S of communication groups on the road 1 is determined according to the formula S ═ N/X.

In step 1301, after the in-vehicle terminal successfully connects with the communication server, the in-vehicle terminal determines a dynamic frequency for itself to update the location information to the communication server.

In one example, the dynamic frequency may be adjusted based on the second traffic information. The second traffic information is information related to traffic conditions of the vehicle-mounted terminal. In one example, the second traffic information is one or more driving parameters of a vehicle in which the vehicle-mounted terminal is located, such as a driving speed of the vehicle, a current location, and the like. In one example, the second traffic information is a peripheral road condition of the vehicle-mounted terminal, such as a road congestion condition, a road closure state, an intersection distance, and the like.

In one example, a minimum frequency (minF) and a maximum frequency (maxF) may be set in milliseconds. Assuming that the vehicle is traveling at S meters/second, the "intersection distance" is D meters. In one example, the dynamic frequency setting method is as follows. If (D/S) <60, the dynamic frequency is minF. If (D/S) >60 and (F × (D/S)/60) > maxF, then the dynamic frequency is maxF. In other cases, the dynamic frequency is (F x (D/S)/60). Wherein, F is a preset default frequency.

It can be seen that the above example of setting the dynamic frequency uses two parameters, that is, "intersection distance" and "vehicle running speed". In practical application, the dynamic frequency may also be set with reference to other second traffic information such as the current location, the road congestion condition, the road closure state, and the like.

In step 1302, the in-vehicle terminal updates the location information to the communication server according to the determined dynamic frequency.

It should be noted that the vehicle-mounted terminal updates the location information to the communication server at a dynamic frequency, which can save resources such as power and traffic for the vehicle-mounted terminal. In one example, the location information refers to information for identifying a geographical location where the vehicle-mounted terminal is located, and may be GPS coordinates or longitude and latitude of the vehicle-mounted terminal.

In step 1303, each time the communication server receives the location information of the in-vehicle terminal, the communication server reassigns a communication group to the in-vehicle terminal according to the updated location information.

In one example, when the moving distance of the vehicle-mounted terminal is large and exceeds the coverage area of the current communication group, the communication server can transfer the vehicle-mounted terminal from the current communication group to the second communication group. Specifically, the communication server deletes the identification, address, and the like of the in-vehicle terminal from the current communication group, and adds the information to the second communication group. In one example, the operations of deleting and adding the member information are transparent to the vehicle-mounted terminal, that is, the vehicle-mounted terminal does not know that the vehicle-mounted terminal migrates from one communication group to another communication group. In one example, the communication server may also notify the vehicle-mounted terminal of the migration situation, such as the communication server sending a communication group migration message to the vehicle-mounted terminal and providing the vehicle-mounted terminal with a last chance to speak in the current communication group, so that the vehicle-mounted terminal may use the last chance to issue valuable chat content in the current communication group, for example, to remind other users of the current communication group of a road problem such as congestion or roadblock.

Fig. 14 is a partial schematic view of a map according to an embodiment of the present invention, which includes a road No. 1 1401, a road No. 2 1402, a road No. 3 1403, a road No. 4 1404, a road No. 5 1405, and an overpass 1406. In fig. 14, way 1 1401 is a north-south bidirectional way, and way 2 is an east-west bidirectional way. In one example, the communication server creates communication groups a1, a2, A3, a4, a5, a6, a7 … based on the total length of the road in the north-south direction of route 1 1401, the number of terminal connections in the north-south direction of route 1 1401, the road congestion in the north-south direction of route 1, and the like.

In one example, the communication server also creates communication groups B1, B2, B3 … based on the total length of the road in the north-to-south direction of route 1 1401, the number of end connections in the north-to-south direction of route 1 1401, the road congestion condition in the north-to-south direction of route 1 1401, and the like. In one example, the communication server creates communication groups C1, C2 … from the first traffic information in the east-west direction from route 2 1402.

In this example, the vehicle in which the in-vehicle terminal 1 is located is the vehicle 1, and the user 1 uses the in-vehicle terminal 1, and in this case, the user 1, the in-vehicle terminal 1, and the vehicle 1 are a concept of a three-in-one body. The vehicle 1 is currently running in the direction from south to north on the route 1 1401, and when the longitude and latitude of the vehicle 1 falls within the longitude and latitude range to which the communication group a6 belongs, the communication server automatically joins the in-vehicle terminal 1 to the communication group a 6. The user 1 who is seated in the vehicle 1 after joining the communication group a6 can communicate with other users in the communication group a6 through the in-vehicle terminal 1, such as performing character interaction, voice conversation, video chat, and the like.

When the vehicle 1 continues to travel forward to the latitude and longitude range to which the communication group a5 belongs, the communication server automatically withdraws the in-vehicle terminal 1 from the communication group a6, and joins the in-vehicle terminal 1 to the communication group a 5.

When the vehicle 1 continues to travel along the road 1 1401 to the overpass 1406 and then a traffic fault is found, the vehicle turns to the west and enters the road 2 from east to west. At this time, the communication server automatically joins the in-vehicle terminal 1 to the communication group C1, and withdraws the in-vehicle terminal 1 from the communication group a 5. At this time, the communication server may issue a communication group migration message to the in-vehicle terminal 1, such as appearing the piece of communication group migration message on the interface of the "in-vehicle chat application", and display a "shout" button. User 1 pressing the "final call" button may issue a final call instruction, thereby issuing chat content to communication group a5 the last time. At this time, the user 1 can use the opportunity to notify other users in the communication group a5 that the road ahead is faulty and the vehicle 1 has already changed lanes and moved back to the group, so as to remind the user behind the vehicle 1 to take measures in time. Alternatively, after receiving the last call instruction, the communication server automatically generates a "trouble reminder" different from the chat content actively issued by the user 1 and issues the "trouble reminder" to the communication group a 5. It should be noted that a plurality of vehicle-mounted terminals may simultaneously access the "vehicle-mounted chat application" on the same vehicle (such as a bus, etc.), and each member user in the communication group refers to one vehicle-mounted terminal.

The embodiment of the invention collects the traffic information of a large number of vehicle-mounted terminals on a road by a special communication server, thereby setting a plurality of communication groups and adjusting the communication groups. When a communication group joining request of a certain vehicle-mounted terminal is received, an appropriate communication group is designated for the vehicle-mounted terminal according to the position information of the vehicle-mounted terminal, and the communication group is changed according to the real-time change of the traffic information of the vehicle-mounted terminal.

In one example, whether the communication group in which the user is located changes is transparent to the user of the in-vehicle terminal, that is, the user does not know to switch from one communication group to another communication group. In one example, when the vehicle-mounted terminal exits from one communication group and enters another communication group, the communication server may also send a prompt to the vehicle-mounted terminal, so that the user of the vehicle-mounted terminal has a final opportunity to publish useful information in the exited communication group.

Therefore, the embodiment of the invention can provide the opportunity for the users (such as drivers or passengers and the like) in the road driving process to communicate with nearby users, share road information (such as traffic jam, road repair and the like) and carry out chat and communication. In one example, the embodiment of the present invention provides a voice chat system, which provides various communication means for vehicle users on the premise of ensuring driving safety. For example, the user can use the voice chat system to speak with a vehicle ahead in the same driving direction to acquire the road condition ahead. In another example, in an emergency, the voice chat system requests the front and rear vehicles to avoid so as to quickly pass through the road. For another example, before the vehicles are driven and merged, the voice chat system is used for notifying the merged rear vehicle, so that the situation of road rage is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A communications server, comprising:

the communication group distribution unit is used for distributing a communication group for the vehicle-mounted terminal according to the position information of the vehicle-mounted terminal;

wherein the communication group assignment unit is further configured to:

when the vehicle-mounted terminal enters a new road section after finding a traffic fault, adding the vehicle-mounted terminal into a first communication group, quitting from a second communication group, and sending a communication group migration message to the vehicle-mounted terminal, so that the vehicle-mounted terminal displays the communication group migration message and a button for indicating the last call on an interface of a vehicle-mounted chat application, receives a last call instruction sent by a user aiming at the button, and sends the last call instruction to the communication server, wherein the last call instruction indicates that the vehicle-mounted terminal has switched lanes and quits the group;

receiving the last call instruction;

the communication server further comprises: and the group message forwarding unit is used for issuing the group message related to the last call instruction to the second communication group which the vehicle-mounted terminal quits.

2. The communication server of claim 1, wherein the communication group management unit is further configured to:

acquiring the actual membership of each communication group;

when the actual membership is greater than a first preset value, splitting the communication group;

and when the actual membership is less than a second preset value, merging the communication groups.

3. The communication server according to claim 1, wherein the communication group management unit is configured to: and acquiring the number of terminal connections on each road, determining the number of communication groups on each road according to a third preset value and the number of the terminal connections, and setting the coverage range of one or more communication groups based on the number of the communication groups.

4. The communication server according to claim 1, wherein the communication group management unit is configured to: the one or more communication groups are created separately for different driving directions of each road.

5. The communication server according to any of claims 1-4, wherein the communication group assigning unit is configured to: and updating the communication group of the vehicle-mounted terminal according to the position information dynamically updated by the vehicle-mounted terminal.

6. The communication server according to claim 1, wherein the first traffic information comprises one or more of road division, driving direction, traffic index, number of terminal connections, road coordinates.

7. The communication server of claim 1, wherein the group message forwarding unit is further configured to: and forwarding the group message for the member users in each communication group created by the communication group management unit.

8. A vehicle-mounted terminal characterized by comprising:

a network access unit, configured to send the location information and the first group message to a communication server, and receive the second group message;

the group message output unit is further used for receiving a communication group migration message from the communication server when the vehicle-mounted terminal enters a new road section after finding a traffic fault, displaying the communication group migration message and a button indicating the last call on an interface of a vehicle-mounted chat application, and receiving a last call instruction sent by a user aiming at the button, wherein the communication server adds the vehicle-mounted terminal into a first communication group and quits from a second communication group, and the last call instruction indicates that the vehicle-mounted terminal has changed lanes and quits;

the network access unit is further used for sending the last call instruction to the communication server so that the communication server can issue a group message related to the last call instruction to the second communication group which the vehicle-mounted terminal exits.

9. The in-vehicle terminal of claim 8, wherein the in-vehicle chat unit is further configured to:

generating a dynamic frequency according to second traffic information, wherein the second traffic information is information related to the traffic condition of the vehicle-mounted terminal;

acquiring updated position information from the position information acquisition unit according to the dynamic frequency;

and sending the updated position information to the communication server through the network access unit.

10. The in-vehicle terminal of claim 9, wherein the in-vehicle chat unit is configured to determine the dynamic frequency according to a crossing distance and a vehicle driving speed.

11. A vehicle-mounted communication method, comprising:

receiving a communication group joining request which is sent by a vehicle-mounted terminal and carries position information, and distributing a communication group for the vehicle-mounted terminal according to the position information;

the method further comprises the following steps:

and receiving the last call instruction, and issuing a group message related to the last call instruction to the second communication group which the vehicle-mounted terminal quits.

12. The method of claim 11, further comprising:

acquiring the actual membership of each communication group;

13. The method of claim 11, wherein creating the one or more communication groups based on the first traffic information comprises:

acquiring the number of terminal connections on each road;

determining the number of communication groups on the road according to a third preset value and the number of the terminal connections;

the coverage of the one or more communication groups is set based on the number of communication groups.

14. The method of claim 11, further comprising:

and receiving the position information dynamically updated by the vehicle-mounted terminal, and updating the communication group of the vehicle-mounted terminal according to the updated position information.

15. The method of claim 11, wherein the first traffic information comprises one or more of road division, driving direction, traffic index, number of terminal connections, and road coordinates.

16. The method of claim 13, further comprising:

and adjusting the number and the coverage range of the communication groups according to the traffic index and/or the number of the terminal connections.

17. A vehicle-mounted communication method, comprising:

acquiring position information of a vehicle-mounted terminal;

sending a communication group joining request carrying the position information, wherein the communication group joining request is used for requesting to join a communication group created according to the first traffic information; the first traffic information is information related to the traffic condition of the whole road;

generating a first group message issued in the communication group, and/or receiving a second group message issued in the communication group;

the method further comprises:

when the vehicle-mounted terminal enters a new road section after finding a traffic fault, receiving a communication group transfer message from the communication server, displaying the communication group transfer message and a button indicating the last call on an interface of a vehicle-mounted chat application, and receiving a last call instruction sent by a user aiming at the button, wherein the communication server adds the vehicle-mounted terminal into a first communication group and quits from a second communication group, and the last call instruction indicates that the vehicle-mounted terminal has changed lanes and quits;

and sending the last call instruction to the communication server so that the communication server can issue the group message related to the last call instruction to the second communication group which the vehicle-mounted terminal exits.

18. The method of claim 17, further comprising:

and acquiring and sending the updated position information according to the dynamic frequency.

19. The method of claim 18, wherein generating the dynamic frequency according to the second traffic information comprises: and determining the dynamic frequency according to the intersection distance and the vehicle running speed.

20. A communications server comprising, characterized by, a memory and a processor, the memory having stored therein computer-readable instructions that cause the processor to perform the method of any of claims 11 to 16.