KR102388151B1 - Apparatus and method for data communication between plural vehicles and plural iot servers - Google Patents

Abstract

A communication device interworking with a vehicle includes: a data communication path including a first data communication channel from a plurality of vehicles to a plurality of IoT servers and a second data communication channel from a plurality of IoT servers to a plurality of vehicles; and located on the data communication path, and transmitted on the data communication path based on at least one of the number of the plurality of vehicles, the number of the plurality of Internet of Things servers, the state of the first data communication channel, and the state of the second data communication channel. and an adaptive server capable of adjusting at least one of a size of packet data, a channel bandwidth for transferring the data, and a data communication protocol.

Description

Method and apparatus for data communication between a plurality of vehicles and a plurality of Internet of Things servers

The present invention relates to a method and apparatus for data communication between a plurality of vehicles and a plurality of IoT servers, and more particularly, to a method and apparatus for data communication between a plurality of vehicles and a plurality of IoT servers. It relates to a method and apparatus for an adaptive system capable of adjusting the size or channel bandwidth of data.

The combination of vehicles and the Internet of Things (IOT) makes it possible to provide various services to drivers or passengers in vehicles. Here, the Internet of Things may refer to an object-space connection network that forms intelligent relationships such as sensing, networking, and information processing in cooperation with humans without explicit human intervention for three distributed environmental elements of humans and objects and services. Objects as components in the Internet of Things include not only home appliances in wired and wireless networks, but also humans, vehicles, bridges, various electronic equipment, cultural assets, and physical objects that make up the natural environment. It is evolving into a concept that interacts with all information in

Due to the development of Internet of Things (IOT) technology, various devices have been able to access the Internet, and a large number of IoT devices are being provided even at home or in a certain space. In order to provide a service, the need to transmit or store the data generated by these devices is required. Accordingly, an IoT server is used as a network device for performing data communication with an IoT device (ie, an object) and transmitting and receiving necessary data.

In contrast to most objects (eg, refrigerators, TVs, etc.) being used in a fixed location, the vehicle can move at a very high speed, and there is no restriction on the range of movement. In addition, when a refrigerator used at home is referred to as a thing, the types of services that can be provided to users through the refrigerator are limited, whereas the types of services requested by the driver or passengers in the vehicle as a thing are very broad. can For this reason, the connection and communication method between the vehicle and the Internet of Things server and the connection and communication method between the normal object and the Internet of Things server may be different from each other.

KR 10-1592860 B1

The present invention may provide a connection and communication method between a plurality of vehicles and a plurality of Internet of Things (IOT) servers.

In addition, the present invention provides an adaptive system ( adaptation system) can be provided.

In addition, the present invention is a wireless that can adjust the size of data or the bandwidth of a transmission channel according to a data flow (channel state) by applying an adaptation protocol in two-way data communication between a vehicle and an Internet of Things (IOT) server. A communication control method and apparatus can be provided.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

A communication device interworking with a vehicle according to an embodiment of the present invention includes a first data communication channel from a plurality of vehicles to a plurality of IoT servers and a second data communication channel from the plurality of IoT servers to the plurality of vehicles. A data communication path comprising a; and located on the data communication path, based on at least one of the number of the plurality of vehicles, the number of the plurality of IoT servers, the state of the first data communication channel, and the state of the second data communication channel. and an adaptive server capable of adjusting at least one of a size of packet data transmitted over a data communication path, a channel bandwidth for transmitting the data, and a data communication protocol.

In addition, the adaptive server confirms the type and size of service data transmitted for the Internet of Things service requested from the first vehicle among the plurality of vehicles and the data communication speed on the data communication path with the first vehicle, At least one of the size of the packet data, the channel bandwidth, and the data communication protocol may be adjusted so that the type and size of the service data may be transmitted corresponding to the data communication speed.

In addition, the data communication speed may be changed by at least one of a location of the first vehicle, a speed of the first vehicle, and a communication method between the first vehicle and the adaptive server.

In addition, after adjusting the size of the packet data, the adaptive server may determine whether the adjusted packet data can be transmitted to the first vehicle, and may readjust the size of the packet data according to the determination.

In addition, the data communication path may include a wireless communication path between the plurality of vehicles and at least one base station for wireless communication; a short-distance direct wireless communication path between adjacent vehicles among the plurality of vehicles; and a wired communication path between the base station and the adaptive server, wherein the adaptive server can check the status of combinations that can be set in the data communication path.

In addition, the adaptive server may provide resources in response to the number of the plurality of vehicles, the number of the plurality of IoT servers, and the size of the packet data transmitted through at least one link formed on the data communication path. You can control the quota of

Also, the format and size of packet data input/output to the adaptive server on a data communication path through which one of the plurality of IoT servers and one of the plurality of vehicles are connected may be different from each other.

In addition, the adaptive server further considers the number of user's terminals existing on the data communication path other than the plurality of vehicles and the number of IoT services provided through the plurality of Internet of Things servers. You can control the size of the data.

Also, the adaptive server may adjust the channel bandwidth through a handshaking process with at least one of the plurality of Internet of Things servers.

In addition, the adaptive server stores or updates the maximum, minimum, or average data rate for each of the plurality of Internet of Things servers and the amount of data required for the Internet of Things service provided from the plurality of Internet of Things servers, and the The size of the packet data may be determined based on the data rate and the amount of data.

A method for controlling an adaptive server according to another embodiment of the present invention provides a first data communication channel from a plurality of vehicles to a plurality of IoT servers and a second data communication channel from the plurality of IoT servers to the plurality of vehicles. 8. An adaptive server located on a data communication path comprising a channel, the adaptive server comprising: receiving packet data transmitted through the first data communication channel or the second data communication channel; The size of the packet data and transmission of the data are controlled based on at least one of the number of the plurality of vehicles, the number of the plurality of IoT servers, the state of the first data communication channel, and the state of the second data communication channel. adjusting at least one of a channel bandwidth and a data communication protocol for and transmitting the packet data according to the adjusted result.

In addition, the step of adjusting at least one of a size of the packet data, a channel bandwidth for data transmission, and a data communication protocol may include a type of service data transmitted for an IoT service requested from a first vehicle among the plurality of vehicles. and ascertaining a size and a data communication speed on the data communication path with the first vehicle. and adjusting at least one of the size of the packet data, the channel bandwidth, and the data communication protocol so that the type and size of the service data can be transmitted in response to the data communication speed.

In addition, the data communication speed may be changed by at least one of a location of the first vehicle, a speed of the first vehicle, and a communication method between the first vehicle and the adaptive server.

In addition, in the step of adjusting at least one of the size of the packet data, a channel bandwidth for data transmission, and a data communication protocol, the adjusted packet data may be transmitted to the first vehicle after adjusting the size of the packet data. determining whether there is and re-adjusting the size of the packet data according to the determination.

In addition, the data communication path may include a wireless communication path between the plurality of vehicles and at least one base station for wireless communication; a short-distance direct wireless communication path between adjacent vehicles among the plurality of vehicles; and a wired communication path between the base station and the adaptive server.

In addition, the step of adjusting at least one of the size of the packet data, a channel bandwidth for data transmission, and a data communication protocol may further include checking a status for a combination that can be set in the data communication path. there is.

In addition, the control method of the adaptive server may include the adaptive response in response to the number of the plurality of vehicles, the number of the plurality of IoT servers, and the size of the packet data transmitted through at least one link formed on the data communication path. It may further include the step of controlling the allocation amount of resources (resources) in the type server.

In addition, the step of adjusting at least one of a size of the packet data, a channel bandwidth for transmitting the data, and a data communication protocol is transmitted over a data communication path in which one of the plurality of IoT servers and one of the plurality of vehicles are connected. The format and size of packet data to be used may be changed.

In addition, the control method of the adaptive server further considers the number of user's terminals existing on the data communication path other than the plurality of vehicles and the number of Internet of Things services provided through the plurality of Internet of Things servers. It may include controlling the size of the packet data.

Also, the channel bandwidth may be adjusted through a handshaking process between at least one of the plurality of IoT servers and the adaptive server.

In addition, the control method of the adaptive server includes storing or updating the maximum, minimum, or average data rate for each of the plurality of Internet of Things servers and the amount of data required for the Internet of Things service provided from the plurality of Internet of Things servers. step; and determining the size of the packet data based on the data rate and the data amount.

In the computer-readable recording medium according to another embodiment of the present invention, an application program characterized by realizing the above-described adaptive server control method can be recorded through being executed by a processor.

Aspects of the present invention are only some of the preferred embodiments of the present invention, and various embodiments in which the technical features of the present invention are reflected are detailed descriptions of the present invention that will be described below by those of ordinary skill in the art can be derived and understood based on

The effects of the apparatus and method according to the present invention will be described as follows.

The present invention avoids communication system problems such as bottleneck and latency even if the amount of data changes in data communication between the vehicle and the Internet of Things server according to the service required by the driver or passenger of the vehicle. can be reduced

In addition, the present invention can selectively apply a wireless communication technology that can provide data communication between a plurality of vehicles and a plurality of Internet of Things servers according to a communication environment through an adaptive system based on a wireless communication technology, By adjusting the bandwidth of the channel or changing the size of data, the data communication speed can be changed according to the communication state, so that wireless communication resources can be efficiently utilized and problems occurring in data communication can be solved.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

The accompanying drawings are provided to help understanding of the present invention, and provide embodiments of the present invention together with detailed description. However, the technical features of the present invention are not limited to specific drawings, and features disclosed in each drawing may be combined with each other to form a new embodiment.
1 illustrates a data communication environment between a vehicle and an Internet of Things server.
2 illustrates a method in which a driver or occupant in a vehicle uses an IoT service.
3 illustrates an adaptive server for data communication between a vehicle and an Internet of Things server.
4 illustrates wireless data communication of a plurality of vehicles located on a road.
5 illustrates a method of determining data communication between a vehicle and an Internet of Things server.
6 illustrates the operation of the adaptive server.
7 illustrates a method of determining the size of data for data communication between a vehicle and an Internet of Things server.
8 illustrates channel bandwidth change via an adaptive server.
9 illustrates resource distribution of the adaptive server.
FIG. 10 explains an example of resource distribution described in FIG. 9 .

Hereinafter, an apparatus and various methods to which embodiments of the present invention are applied will be described in more detail with reference to the drawings. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves.

In the description of the embodiment, in the case where it is described as being formed on "up (above) or under (below)" of each component, the upper (upper) or lower (lower) means that the two components are in direct contact with each other or One or more other components are all formed by being disposed between two components. In addition, when expressed as "upper (upper) or lower (lower)", the meaning of not only an upper direction but also a lower direction based on one component may be included.

1 illustrates a data communication environment between a vehicle and an Internet of Things server.

As shown, the vehicle 14 can access the Internet or a network while moving through the base station 16 for wireless communication while moving on the road 10 , and can also access the Internet of Things server 12 . A base station 16 for wireless communication typically has coverage of areas 18A and 18B of a preset radius. Neighboring coverage may partially overlap, and through this, the vehicle 14 may perform data communication without interruption even while moving.

The IoT server 12 may be composed of a plurality of Internet of Things servers 12A and 12B. Each of the IoT servers 12A and 12B may manage different IoT services. According to an embodiment, the same Internet of Things service may be provided through a plurality of Internet of Things servers 12A and 12B.

The moving vehicle 14 may be connected to the IoT server 12 through a wireless communication method. In this case, the wireless connection may be between the base station 16 and the vehicle 14 , and between the base station 16 and the Internet of Things server 12 may be a wired connection through an optical communication line or the like.

2 illustrates a method in which a driver or occupant in a vehicle uses an IoT service.

As shown, the driver or user 4 riding in the vehicle 14 may request an IoT service while driving ( 22 ). For example, here, the request for the IoT service is the driver or user( It can be realized by recognizing and transmitting the voice of 4). On the other hand, the IoT service may be according to the needs of the user 4 , such as room temperature control, intelligent lighting control, security and safety check, and entertainment such as music and movies. In addition, the IoT service requested by the driver or user 4 may be related to industries in various fields such as intelligent energy, transportation, finance, distribution, manufacturing, public safety, and city management.

Upon receiving and recognizing the driver's or user's request, the vehicle 14 transmits a request signal to the base station 16 (24). The vehicle 14 may form uplink and downlink channels according to a wireless communication method with the base station 16 . Here, the wireless communication method may be based on 3rd to 5th generation data communication (3G, LTE, etc.), and a short-distance data communication method such as Wi-Fi may also be used. Here, the base station 16 having a certain range of coverage may be connected to a plurality of vehicles 14 .

The base station 16 receiving the request signal may transmit the corresponding signal to the adaptive server 20 (26). The base station 16 and the adaptive server 20 may be connected through a wired communication method, but may not be limited thereto. The adaptive server 20 may be connected to a plurality of base stations 16 . Also, between the adaptive server 20 and the plurality of base stations 16, communication equipment such as a switchboard, a router, and a repeater may be connected or interlocked. Meanwhile, according to an embodiment, the adaptive server 20 may include a function of a router.

The adaptive server 20 may transmit the received request signal to the corresponding Internet of Things server 12A, 12B, or 12C (28). The adaptive server 20 may be connected to a plurality of Internet of Things servers 12A, 12B, and 12C. According to an embodiment, when a plurality of adaptive servers 20 are included, the plurality of Internet of Things servers 12A, 12B, and 12C and the plurality of adaptive servers 20 may be connected to each other like a mesh.

The IoT server 12A receiving the driver's or user's 4 request signal may access the target thing 8 through the Internet network 6 and control the target thing 8 (30). Here, the target object 8 may include a communication device that can be accessed through a network, the Internet, or the like through a wired/wireless communication channel. The Internet of Things server 12A understands the request signal of the driver or user 4 , and transmits a control signal for performing the understood content through the Internet network 6 . For example, when the driver or user 4 requests “to turn on the living room, etc.”, the Internet of Things server 12A understanding this can access the “living room, etc.” intended by the driver or user 4 Not only that, but you can also perform a command to “turn it on”.

After controlling the target object 8 , the result of object control may be transmitted to the driver or user 4 in the vehicle 14 ( 32 ). For example, the result of object control may be transmitted in the form of a feedback signal or an ACK signal. Through a feedback signal or ACK signal transmitted from the target object 8 to the driver or user 4 , the driver or user 4 determines whether his/her request or instruction made in the vehicle 14 being driven has been successfully performed. can be checked.

3 illustrates an adaptive server for data communication between a vehicle and an Internet of Things server.

As shown, the adaptive server 20 may be connected to a plurality of vehicles and a plurality of Internet of Things servers 12 . Each of the plurality of vehicles may be equipped with an audio-video-navigation (AVN) device 34 , and the audio-video-navigation device 34 may be connected to the adaptive server 20 through a wireless communication method. Also, different users (User1, User2, User3, ..., UserN) may request an IoT service through the audio-video-navigation device 34 .

Meanwhile, the plurality of IoT servers 12 connected to the adaptive server 20 may be designed to use different or identical IoT servers for each service, region, and service operating entity. Depending on the embodiment, each Internet of Things server 12A may interwork with a system 36 operated by different service providers.

The adaptive server 20 connecting the audio-video-navigation (AVN) device 34 and the plurality of Internet of Things servers 12 includes a processing unit 42, a first transmission/reception unit 44A, and a second transmission/reception unit ( 44B). The first transceiver 44A transmits data or signals transmitted from the adaptive server 20 to the IoT server 12A, or data or signals transmitted from the IoT server 12A to the adaptive server 20 . can receive Similarly, the second transceiver 44B receives data or signals transmitted from the audio-video-navigation (AVN) device 34 of the vehicle, or transmits the data or signals to the audio-video-navigation (AVN) device 34 . It can transmit data or signals.

The processing unit 42 may process, modulate, modify, or convert data or signals transmitted between the first transmission/reception unit 44A and the second transmission/reception unit 44B. For example, the signal transmitted from the audio-video-navigation (AVN) device 34 of the vehicle may be transmitted using a preset communication standard or protocol, and the corresponding signal transmitted through the second transmitter/receiver unit 44B When it is determined that is inappropriate to be transmitted to the IoT server 12A or that conversion is necessary according to the state of the communication line, channel, path, etc., the processing unit 42 may convert the corresponding signal. For example, wireless data communication network technologies (3rd, 4th, 5th generation) for the transfer and exchange of data or signals between the audio-video-navigation (AVN) device 34 included in a moving vehicle and the adaptive server 20 . generation technology) may be used, and a fifth generation technology (eg, mmWave, etc.) may be used between the adaptive server 20 and the Internet of Things server 12A.

According to an embodiment, the processing unit 42 may be configured as a system including at least one memory and at least one processor. The processing unit 42 processes, modulates, modifies, and converts data and signals transmitted through the first transceiver 44A and the second transceiver 44B, as well as audio-video-navigation ( AVN) an interactive channel formed between the device 34 and the adaptive server 20, a communication path, and an interactive channel formed between the adaptive server 20 and the Internet of Things server 12A, can monitor the status of the communication path .

The adaptive server 20 may store Internet protocol (IP) addresses of a plurality of Internet of Things servers 12A providing Internet of Things services, and information on ports through which data and signals are transmitted. In addition, the adaptive server 20 may also store information on the type of data transmitted and received by the specific IoT server 12A. The adaptive server 20 may initially distribute the bandwidth and data rate equally for the plurality of Internet of Things servers 12A. However, when the vehicle and the plurality of IoT servers 12 are connected and the IoT service is provided according to a user's request, the adaptive server 20 determines the state of the data communication path based on various information already stored. It can be monitored and analyzed to adjust bandwidth and data rate. Furthermore, according to an embodiment, in response to the state of the data communication path or the characteristics of the provided IoT service, the adaptive server 20 may adjust the size of packet data transmitted through the two-way data communication path, and the packet data It is also possible to convert the format of packet data by changing and applying the communication protocol that determines the format of the packet data.

4 illustrates wireless data communication of a plurality of vehicles located on a road.

As illustrated, a plurality of vehicles 14A, 14B, 14C, 14D, 14E, and 14F driving on a road 10 may request an IoT service through at least one base station 16A, 16B. At this time, although it may vary depending on the communication capability of each base station 16A, 16B, some of the plurality of vehicles 14A, 14B, 14C, 14D, 14E, 14F have access to the base stations 16A, 16B. It may not be smooth. In this case, the vehicle may attempt to request an IoT service through an adjacent vehicle. For example, when it is difficult for one vehicle 14B to directly access the base station 16A, it can access the base station 16A through another vehicle 14A or 14C.

In addition, when it is difficult for the plurality of vehicles 14A, 14B, 14C, 14D, 14E, and 14F to be connected to the base station 16A, 16B due to the location, regional characteristics, etc., the plurality of vehicles 14A, 14B, 14C, 14D, 14E and 14F) may each request an IoT service through an adjacent vehicle and receive the result.

Meanwhile, according to an embodiment, the plurality of vehicles 14A, 14B, 14C, 14D, 14E, and 14F may perform direct communication with adjacent vehicles. Direct communication between adjacent vehicles may not only diversify data communication paths, but may also be used for sharing and transmitting specific data and information. In addition, information collected through direct communication between adjacent vehicles may be utilized for the purpose of requesting or receiving IoT services.

5 illustrates a method of determining data communication between a vehicle and an Internet of Things server.

As shown, one of the biggest factors affecting data communication between the vehicle and the Internet of Things server is the Internet of Things service. The amount and size of data and signals to be transmitted between the vehicle and the IoT server may be determined according to the IoT service requested or requested by the driver or passenger in the vehicle. In addition, in order to increase the efficiency of data communication between the vehicle and the Internet of Things server and prevent problems (eg, failures) that may occur, or to troubleshoot and recover, data communication between the vehicle and the Internet of Things server may be determined.

First, data and signals transmitted between the vehicle and the Internet of Things server may be analyzed ( 42 ). In the case of an adaptive server that may be located between the vehicle and the Internet of Things server, it may be difficult to accurately recognize contents and information about the Internet of Things server. Accordingly, the adaptive server can obtain information for establishing a connection with the corresponding Internet of Things server by analyzing the type and size of data transmitted on the data communication path (eg, bidirectional (upper/lower) data link). .

Thereafter, all paths through which data communication is possible may be checked ( 44 ). Here, all paths where data communication is possible may include the number of cases for a connection from the adaptive server to the vehicle. The vehicle may be connected to the adaptive server through a base station accessible from the current location, or may be connected to the adaptive server through direct communication with an adjacent vehicle and the base station. If the physical distance between the base station and the adaptive server and the hierarchical distance are not far in the hierarchical network configuration, the number of all possible data communication paths can be limited relatively narrowly, but the physical distance between the base station and the adaptive server and the vehicle and layer In a typical network configuration, if the hierarchical distance is long, the number of all paths through which data communication is possible may become very large. The reason for this is that, as the physical distance and the hierarchical distance increase, they can be connected to each other through network equipment such as repeaters, routers, and switchboards.

In addition, it is possible to detect the current state of the vehicle by tracking the location and driving state of the vehicle (46). The location of the vehicle and the driving condition (eg, the speed of the vehicle) may significantly affect the speed of data communication. Since the distance between the vehicle's location and the adjacent base station is inversely proportional to the power of the transmitted signal, the longer the distance, the slower the data rate may be. In addition, as the speed of the vehicle increases, the speed of data transmission in the wireless communication method may become slower. For example, LTE (one of the communication methods) can provide a transmission speed of 1 Gbps when the vehicle is stationary, and 100 Mbps or more when the vehicle moves at a high speed of 60 km/h or more.

Thereafter, a transmittable data rate (eg, a minimum value, a maximum value, and an average value) may be calculated based on the vehicle location and driving state ( 48 ). Depending on the location and operating status of the vehicle, the transmission/reception speed of data and signals between the vehicle and the adaptive server may vary. Calculate the feasible data communication speed as the minimum, maximum, and average values. Through this, it is possible to adjust the speed of data and signals transmitted to the vehicle, and by adjusting the speed of data and signals, it is possible to avoid and prevent problems such as communication failure.

By calculating the speed of data communication according to the location of the vehicle and the driving state, it can be determined whether data transmission is possible ( 50 ). If data transfer is not possible, a reconfirmation request may be made (52). Here, the reconfirmation request is for recalculating the data communication speed feasible between the vehicle and the adaptive server based on all communication paths for data transmission and the vehicle's location and driving state (44, 46, 48).

If it is determined that data transmission is possible, a communication method may be determined based on the size (or type) of the transmitted data, a transmission path, etc. (54). Here, the communication method may include a standard protocol (eg, 3G, 4G, 5G, short-range communication technology, etc.).

Thereafter, data may be transmitted using the determined communication method (56). In this case, the transmitted data may be processed, converted, and adjusted according to the determined communication method.

6 illustrates the operation of the adaptive server.

As shown, the adaptive server 20 may be located between the vehicle-mounted audio-video-navigation device 34 and the Internet of Things server 12 . The adaptive server 20 may include a first transmission/reception unit 44A, a second transmission/reception unit 44B, and a processing unit 42 . The number of users (# of Users), the number of Internet of Things services currently being provided or the number of Internet of Things servers providing Internet of Things services (# of IOT Services), the size of data to be delivered for Internet of Things services (Size of file/packet), and/or the size of processing power that can be used by the adaptive server 20 may be considered.

Here, the factors that the processing unit 42 can consider include information stored through a preset communication connection relationship (eg, information (address, port, etc.) on an Internet of Things server for an Internet of Things service, Internet of Things). Service information (data size, type, etc.) may be included. In addition, information and data included in factors that the processing unit 42 can consider are analyzed by data and signals on a data communication path transmitted through the first transmission/reception unit 44A and the second transmission/reception unit 44B. It can be confirmed or updated based on the results.

For example, the processing unit 42 may control data or signals in a direction to reduce the number of users (# of Users) or the number of Internet of Things servers (# of IOT Services) through the adaptive server 20 . there is. If each of the adaptive servers 20 reduces the number of users (# of Users) or the number of Internet of Things servers (# of IOT Services), a plurality of adaptive servers 20 may distribute their roles to each other. can mean

7 illustrates a method of determining the size of data for data communication between a vehicle and an Internet of Things server.

As shown, the method of determining the size of data can be classified into a process before data processing and a process for processing data. Here, the data or signal transmitted through the data communication path may have the form of a packet. First, the adaptive server may store information related to the IoT service. The information related to the IoT service may include information such as an Internet address and a pod of the IoT server and information about data transmitted for the provided IoT service.

The adaptive server may record and store the amount of traffic in the data communication path (62) to determine the size of the packet data prior to processing, editing, transforming, or manipulating the data. The traffic records for each server can then be used to determine the maximum, average, and minimum data rates (64).

In the process of processing data, the adaptive server may analyze the type and size of data transmitted on the data communication path (66). Data transmitted over the data communication path may vary depending on the provided IoT service. It is necessary to process, edit, transform, and adjust the data type and size within the range that can continuously provide IoT services by analyzing the data type and size transmitted through the data communication path.

The adaptive server may determine the size of the packet data based on the type and size of data and the maximum, average, and minimum data rates (68). For example, the size of packet data may be adjusted to prevent or solve a communication failure, etc. so that a plurality of IoT services provided by a plurality of IoT servers can be efficiently performed with respect to a plurality of vehicles.

When the size of the packet data is determined, it may be determined whether transmission to the IoT server is possible ( 70 ). If it is determined that the adjusted packet data is difficult to be transmitted to the IoT server, the possible size of the packet data may be re-examined (72).

If it is determined that the adjusted packet data can be transmitted to the IoT server, the adjusted packet data can be transmitted (74).

8 illustrates channel bandwidth change via an adaptive server.

As shown, the adaptive server may adjust the channel bandwidth. While FIG. 7 describes how to efficiently perform a plurality of IoT services through a method of adjusting and changing the size of packet data, in FIG. 8, channels allocated to each IoT server (or each vehicle) Through a method of adjusting the bandwidth of

In the initial stage of the IoT service, the bandwidth allocated to each IoT server (Severs 1 to 4) may be uniform. However, when a plurality of IoT services are provided, the amount of data transmitted and received varies according to the characteristics of each IoT service. The bandwidth allocated to each IoT server can be adjusted based on the characteristics of the service.

For example, bandwidth adjustment may be performed in the process of handshaking between the adaptive server and each Internet of Things server. In the process of confirming and detecting each other's existence and service initiation, etc., in order for the adaptive server and the Internet of Things server to perform data communication, the characteristics of the Internet of Things service provided by the Internet of Things server (eg, amount and type of data) In response, the bandwidth allocated to the IoT server can be adjusted.

9 illustrates resource distribution of the adaptive server.

As shown, the adaptive server 20 capable of participating in the provision of IoT services includes N vehicles (ie, N audio-video-navigation (AVN) devices, 34) and M IoT servers 12 ) can control data communication between

From the standpoint of the adaptive server 20, the routing matrix A may be defined as follows.

Here, a _MN may mean a ratio for processing the allocation of resources in the adaptive server 20 . A vector (x) of the N audio-video-navigation (AVN) devices 34 may be defined by the following equation.

In addition, the vectors of the M IoT servers 12 may be defined as follows.

In this case, the relationship between the two vectors (x, y) can be defined as follows.

를 적용하면 아래와 같다.Here, since the adaptive server 20 can know about the two vectors (x, y), the routing matrix A can be described as follows, and using Singular Value Decomposition (SVD)

is applied as follows.

Here, after the routing matrix (A) is determined, it is possible to track two vectors (x, y) for determining the change of each element (a _MN ).

Through the above-described method, it is possible to allocate resources (resources) in the adaptive server (20). That is, according to the embodiment, the allocation of resources in the adaptive server 20 is a result of tracking the audio-video-navigation (AVN) device 34 and the Internet of Things server 12 connected to the adaptive server 20 . can be done based on

FIG. 10 explains an example of resource distribution described in FIG. 9 .

As shown, the adaptive server 20 may be connected to three vehicles 14A, 14B, 14C and two Internet of Things servers 12A, 12B. For example, it is assumed that the amount of data from three vehicles 14A, 14B, and 14C occupies 50%, 30%, and 20%, respectively. In addition, it is assumed that the amount of data generated by the IoT services 36A and 36B provided through the two IoT servers 12A and 12B accounts for 60% and 40%, respectively.

In such an environment, the adaptive server 20 may apply the method described in FIG. 9 to allocate resources to effectively perform data communication, as follows.

If it is assumed that the adaptive server 20 includes 100 processors (eg, CPU) and 200 GB of memory, the component (a _MN ) of the routing matrix (A) may be determined as follows. For example, 29 processors (CPUs) and 58 GB of memory may be allocated as an allocation (a ₁₁ ) of resources for transmission of data and signals from the first vehicle 14A to the first Internet of Things server 12A. . In addition, 17 processors (CPUs) and 34 GB of memory may be allocated as allocation (a ₁₂ ) of resources for transmission of data and signals from the second vehicle 14B to the first Internet of Things server 12A. In addition, 11 processors (CPUs) and 22 GB of memory may be allocated as a resource allocation (a ₁₃ ) for data and signal transmission from the third vehicle 14C to the first Internet of Things server 12A.

In addition, the routing matrix (A) and the 2x3 matrix (ε) by the vehicle (x) that has determined the above change amount and the IoT server (y) can be summed and fed back as follows.

When the resources of the adaptive server 20 are allocated in the above-described manner, efficiency can be increased when the resource allocation corresponding to the amount of data in the data communication path is made.

The method according to the above-described embodiment may be produced as a program to be executed on a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape. , a floppy disk, an optical data storage device, and the like, and also includes those implemented in the form of a carrier wave (eg, transmission through the Internet).

The computer-readable recording medium is distributed in network-connected computer systems, so that the computer-readable code can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the above-described method can be easily inferred by programmers in the technical field to which the embodiment belongs.

It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

14, 14A, 14B, 14C, 14D, 14E, 14F: Vehicle
12A, 12B, 12C: Internet of Things Server
34: AVN 16: base station
20: adaptive server 42: processing unit
44A: first transceiver 44B: second transceiver

Claims (22)

a data communication path comprising a first data communication channel from a plurality of vehicles to a plurality of IoT servers and a second data communication channel from the plurality of Internet of Things servers to the plurality of vehicles; and
Located on the data communication path, the data is based on at least one of the number of the plurality of vehicles, the number of the plurality of IoT servers, the state of the first data communication channel, and the state of the second data communication channel. An adaptive server capable of adjusting at least one of a size of packet data transmitted over a communication path, a channel bandwidth for transmission of the data, and a data communication protocol,
wherein the adaptive server controls the size of the packet data in a direction to decrease the number of users currently maintaining a connection or the number of the Internet of Things servers. According to claim 1,
The adaptive server
Checking a type and size of service data transmitted for an Internet of Things service requested from a first vehicle among the plurality of vehicles and a data communication speed on the data communication path with the first vehicle,
A communication device interoperating with a vehicle for adjusting at least one of a size of the packet data, the channel bandwidth, and the data communication protocol so that the type and size of the service data can be transmitted in response to the data communication speed. 3. The method of claim 2,
The data communication speed is changed by at least one of a location of the first vehicle, a speed of the first vehicle, and a communication method between the first vehicle and the adaptive server. 3. The method of claim 2,
The adaptive server
After adjusting the size of the packet data, it is determined whether the adjusted packet data can be transmitted to the first vehicle,
A communication device interworking with a vehicle, capable of re-adjusting the size of the packet data according to the determination. According to claim 1,
The data communication path is
a wireless communication path between the plurality of vehicles and at least one base station for wireless communication;
a short-distance direct wireless communication path between adjacent vehicles among the plurality of vehicles; and
a wired communication path between the base station and the adaptive server;
and the adaptive server checks a status for a combination that can be set in the data communication path. According to claim 1,
The adaptive server
Controlling the allocation amount of resources in response to the number of the plurality of vehicles, the number of the plurality of IoT servers, and the size of the packet data transmitted through at least one link formed on the data communication path, communication device that works with According to claim 1,
In a data communication path in which one of the plurality of IoT servers and one of the plurality of vehicles are connected, the format and size of packet data input/output to the adaptive server are different from each other. communication device. According to claim 1,
The adaptive server further considers the number of user's terminals existing on the data communication path other than the plurality of vehicles and the number of Internet of Things services provided through the plurality of Internet of Things servers. A communication device that interacts with the vehicle to control the size. According to claim 1,
and the adaptive server adjusts the channel bandwidth through a handshaking process with at least one of the plurality of Internet of Things servers. According to claim 1,
The adaptive server
storing or updating the maximum, minimum, or average data rate for each of the plurality of Internet of Things servers and the amount of data required for the Internet of Things service provided from the plurality of Internet of Things servers;
and determining the size of the packet data based on the data rate and the amount of data. An adaptive server located on a data communication path comprising a first data communication channel from a plurality of vehicles to a plurality of IoT servers and a second data communication channel from the plurality of Internet of Things servers to the plurality of vehicles, the adaptive server comprising:
receiving packet data transmitted through the first data communication channel or the second data communication channel;
The size of the packet data and transmission of the data are controlled based on at least one of the number of the plurality of vehicles, the number of the plurality of IoT servers, the state of the first data communication channel, and the state of the second data communication channel. adjusting at least one of a channel bandwidth and a data communication protocol for and
transmitting the packet data according to the adjusted result;
The adjusting of at least one of a size of the packet data, a channel bandwidth for data transmission, and a data communication protocol may include reducing the number of users currently maintaining a connection or the number of the Internet of Things servers. A control method of an adaptive server, which controls the size of data. 12. The method of claim 11,
Adjusting at least one of a size of the packet data, a channel bandwidth for transferring the data, and a data communication protocol comprises:
checking a type and size of service data transmitted for an IoT service requested from a first vehicle among the plurality of vehicles and a data communication speed on the data communication path with the first vehicle; and
adjusting at least one of the size of the packet data, the channel bandwidth, and the data communication protocol so that the type and size of the service data can be transmitted in response to the data communication speed
Including, a control method of the adaptive server. 13. The method of claim 12,
The data communication speed is changed by at least one of a location of the first vehicle, a speed of the first vehicle, and a communication method between the first vehicle and the adaptive server. 13. The method of claim 12,
Adjusting at least one of a size of the packet data, a channel bandwidth for transferring the data, and a data communication protocol comprises:
determining whether the adjusted packet data can be transmitted to the first vehicle after adjusting the size of the packet data; and
Re-adjusting the size of the packet data according to the determination
Further comprising, the control method of the adaptive server. 12. The method of claim 11,
The data communication path is
a wireless communication path between the plurality of vehicles and at least one base station for wireless communication;
a short-distance direct wireless communication path between adjacent vehicles among the plurality of vehicles; and
Wired communication path between the base station and the adaptive server
Including, a control method of the adaptive server. 16. The method of claim 15,
Adjusting at least one of a size of the packet data, a channel bandwidth for transferring the data, and a data communication protocol comprises:
The control method of the adaptive server, further comprising the step of checking a status for a combination that can be set in the data communication path. 12. The method of claim 11,
The allocation amount of resources in the adaptive server corresponding to the number of the plurality of vehicles, the number of the plurality of IoT servers, and the size of the packet data transmitted through at least one link formed on the data communication path step to control
Further comprising, the control method of the adaptive server. 12. The method of claim 11,
Adjusting at least one of a size of the packet data, a channel bandwidth for transferring the data, and a data communication protocol comprises:
A method for controlling an adaptive server, wherein a format and a size of packet data transmitted on a data communication path in which one of the plurality of IoT servers and one of the plurality of vehicles are connected can be changed. 12. The method of claim 11,
controlling the size of the packet data by further considering the number of user's terminals existing on the data communication path other than the plurality of vehicles and the number of IoT services provided through the plurality of IoT servers
Further comprising, the control method of the adaptive server. 14. The method of claim 13,
The control method of an adaptive server, wherein the channel bandwidth is adjusted through a handshaking process between at least one of the plurality of Internet of Things servers and the adaptive server. 21. The method of claim 20,
storing or updating a maximum, minimum, or average data rate for each of the plurality of Internet of Things servers and an amount of data required for an Internet of Things service provided from the plurality of Internet of Things servers; and
determining the size of the packet data based on the data rate and the amount of data;
Further comprising, the control method of the adaptive server. 22. A computer-readable recording medium in which an application program is recorded, characterized in that the method for controlling an adaptive server according to any one of claims 11 to 21 is realized through being executed by a processor.

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