KR102394486B1 - Method of determining how to provide information to a plurality of devices based on the temporal requirements for the information, and apparatus for said method - Google Patents

Abstract

The apparatus according to the present invention provides a request interval and delay tolerance for each of the information items that a plurality of devices connected to a network separately designate at least a portion of information required for an intended function. a processing unit configured to provide a specific list recorded together with a time requirement including a time requirement and a requesting device specifying the time requirement by acquiring and recording necessary information, or receiving and receiving from the outside, the at least part of the information on the specific list For each of the items, based on one or more temporal requirements specified for the corresponding information item, a method of providing information of the corresponding information item to one or more devices requesting provision of the corresponding information item (eg, multicast or unicast ).

Description

A method of determining how to provide information to a plurality of devices based on the temporal requirements for the information , and apparatus for said method}

The present invention relates to a technology in which a plurality of devices that are connected to a network and perform an intended function provide or notify through a network at the request of other devices for various information sensed, detected, acquired, or generated by themselves will be.

Many types of devices for specific purposes that make people’s lives convenient, especially, devices with very diverse and complex functions such as cars, have a lot of information between so-called electronic control units (ECUs). It is based on real-time communication.

And, in order to improve the function and performance of the device for a specific purpose, a unit with a high specification is gradually applied to an electronic control unit that directly processes data. In such a high-spec electronic control unit, an operating system (O/S) for efficient use of resources (CPU, memory, communication device, various types of input/output interfaces, ADC, etc.) When you want to apply the electronic control unit to a device for a specific purpose, such as a vehicle or vehicle, you can develop and apply an application program that performs the desired operation in the electronic control unit more easily based on the operating system.

This kind of application programs are related to peripheral devices such as various sensors or components, mechanical or electrical modules (hereinafter referred to as corresponding electronic control for these) that are signal-connected to manage or control the electronic control unit to which the application program is ported. It is called the 'full-speed peripheral part' of the unit. In some cases, it may be for an operation to set them to a desired state or a desired value or level, but it is not limited to this, and confirmation of the state of signals or arbitrary physical quantities exclusively processed by other electronic control units connected to the network It may be for the reception of a response according to it later) or for the operation of setting.

In order to perform a predetermined operation related to the state of a signal or physical quantity in charge of other devices, it is generally necessary to first check whether the state of the signal or physical quantity corresponds to a condition requiring the operation. However, if the state of a signal or physical quantity in charge of other devices is repeatedly and continuously checked in order to check whether such a condition is met, the load applied to the network is unnecessarily increased.

In order to suppress the generation of unnecessary data during such repeated verification, a rule that sets a plurality of devices to exchange information based on service, for example, SOME/IP (Scalable service-Oriented MiddlewarE over IP), By designating the event item, based on the event, states of a specific physical quantity or specific signals (hereinafter, referred to as 'state variables' for these) are mutually transmitted between a plurality of devices that comply with the service-based rule. To be notified and to be notified.

Therefore, among a plurality of devices connected to a network and operating based on a service, a device registers with an event item of another device that it provides for a state variable to be notified (this is generally referred to as 'subscription') . ), the value of the state variable periodically or when the value of the state variable changes or a specific condition is met, through an event message that notifies the value or state, including information The state variable becomes known.

However, in a plurality of devices connected to the network, various application programs may be ported and executed, and these applications provide the same state variable that is provided for a state variable dedicated by an arbitrary device other than the device in which it is running. You can sign up for event items.

As described above, when the number of devices to which application programs subscribed to one event item are transplanted becomes plural, notification of the event item may be generally made in a multicast method. This is because it is more advantageous in terms of network load and the use of transmission resources on the transmitting side than when using the unicast method of notifying each device individually. That is, when the number of devices subscribed to the corresponding event item is N ( N≥2 ), instead of N individual notifications by unicast, only one notification of the multicast method causes an event to a plurality of devices subscribed to the event item This is because information related to the fact of occurrence can be conveyed.

However, the application programs running on different devices subscribed to one and the same event item may not urgently need the state variable to be checked through the event item to the same extent in all the applications.

For example, application A running on one device D _A performs an action that requires determining the value or state of a specific state variable as soon as it changes or meets a predetermined condition, and another device D _B The application program B running in . may have an operation that only needs to be checked intermittently for a considerable amount of time for the state variable. That is, the former application program A is a control program that immediately responds to the value of the corresponding state variable and performs a setting operation for another physical quantity or signal, and the latter application program B averages the value of the state variable for a long time. It may be a monitor program that transmits the value to a display or other devices on the network.

As such, a notification to be adopted when notifying a plurality of devices of an event item without taking into account that there may be differences in urgency required for a state variable in charge of processing by any one device D _X If a method, for example, a multicast method, is always applied, a device that subscribes to the event item may use a significant part of its resources or processing power to receive data from an unintended network. .

_In general, the _reception of data from the network has to be _handled in an interrupt method so that no data loss occurs. Accordingly, at a much shorter interval than the time interval required by the user, his/her communication resource is repeatedly occupied to immediately receive data for event notification from the network, but these data From the point of view of application B, a large amount may be redundant information or information that is unnecessarily promptly notified.

For example, a specific event item to which devices D _A and D _B are subscribed is to generate an event with a cycle of TE, and application _A requires a notification for each cycle TE, and application _B requires that cycle. It is a case in which it is sufficient to know the value of the state variable notified through the event item at intervals 100 times greater than that, that is, every 100 T _E , and the size of the message notifying the occurrence of the event (this is abbreviated as 'event') is DS , the device _DB receives its communication resources due to the event message provided in multicast immediately and repeatedly of the data amount of 99·DS (99% of the amount notified for the event item) (Despite that such immediate and repeated reception is unnecessary), it is used. This means that the communication resources of the device _DB are distributed or occupied very inefficiently, and the use/occupancy of these inefficient resources causes delays in the rapid processing of high-needed data or resource distribution to applications. do.

Therefore, when it is necessary to repeatedly provide information on a certain state variable that can be provided from one device to other devices to a plurality of devices, the time of each device requiring the information of the state variable is Depending on the requirements, it is necessary to appropriately select the method of providing the information.

The present invention relates to providing a method and apparatus for determining a method of providing information based on a time requirement for the information when a certain device provides information required by a plurality of other devices connected to the same network. it has a purpose.

Another object of the present invention is to provide a method and apparatus for determining, from a plurality of time requirements for information required by a plurality of applications running in a device, a representative time requirement to request from a device providing the corresponding information. will provide

Another object of the present invention is to provide a method and apparatus for determining a method of providing information to a device requiring the information based on the data processing capability of the device providing the information or the device requiring the information. will be.

Another object of the present invention is to reduce the load on the network due to the extent to which resources are used for the reception of unnecessary information and the transmission of the information to the devices for the devices requiring the information to an appropriate level. It is to provide a method and apparatus for determining the method of providing information so that

Another object of the present invention is to determine the time requirements to be required for other devices by identifying the characteristics of the time requirements that application programs designate for necessary information, a method for preventing excessive information provision requests from occurring, and to provide the device.

The object of the present invention is not limited to the object explicitly described above, but it naturally includes achieving the effect that can be derived from the following specific and exemplary description of the present invention.

According to an aspect of the present invention, an apparatus capable of determining an information provision method between a plurality of devices connected to a network is configured to distinguish and designate at least a portion of information required for an intended function of the plurality of devices. a processing unit configured to have, for each of the information items, a specific list recorded together with a time requirement including a request interval for the information item and a requesting device specifying the time requirement; a determining unit configured to determine, for each, a manner of providing information of said information item to one or more devices requesting provision of said information item, based on one or more temporal requirements specified for said information item; do.

In one embodiment according to the present invention, the determination unit, for the request interval of the one or more temporal requirements, classifies according to which time period it belongs to in two or more time periods separated from each other, and to which a predetermined number or more request intervals belong As for the classification, a method of providing information of the corresponding information item to two or more requesting devices for which request intervals belonging to the classification are specified is determined by multicast. In the present embodiment, the range of the two or more time intervals may be determined by the time length of the shortest requested interval belonging to each time interval. And, the determining unit, the two or more requesting devices determined by multicast with respect to a method of providing information, a delay that satisfies a given condition in delay tolerances each included in the time requirements specified for the corresponding information item For any device for which the allowable time is designated, it may be separated from the multicast information provision method determined for the two or more requesting devices. Here, the allowable delay time means the maximum allowable time from the generation of information corresponding to the information item to the provision thereof.

In the above embodiment, the given condition is that the time difference between the delay tolerance time specified by the arbitrary device and the delay tolerance time specified by one or more other devices among the two or more requesting devices is that the arbitrary device determines that the information For all information items requesting information provision to a device supporting the item, the number of times greater than the specified request intervals must be greater than or equal to the predetermined number, or the delay tolerance specified by the device as a time requirement is required. It may be that it should be longer than the interval.

In addition, in the above-described embodiment, the determination unit is configured to, among the two or more requesting devices, if there is at least one of the arbitrary devices for which a delay tolerance that satisfies the given condition is specified, the one or more of the two or more requesting devices For devices except for any device, the information provision method can be re-designated to multicast or changed to unicast.

In an embodiment according to the present invention, a delay tolerance may be further included in the time requirement. In this case, in the one or more temporal requirements specified for the corresponding information item, the determining unit is configured to: for two or more requesting devices that have specified a time requirement in which a delay tolerance is longer than a request interval, between the delay tolerance times specified by the requesting devices. Based on the time difference, a method of providing information on the corresponding information item may be determined, and the time difference between the delay tolerance time specified by the first requesting device selected from among the two or more requesting devices and the second requesting device, respectively, is the second If the requesting device does not exceed a predetermined multiple for the specified request interval, a method of providing information of the corresponding information item to the first requesting device and the second requesting device may be determined as a multicast method. Here, the second requesting device refers to a device designated longer than the first requesting device with respect to the allowable delay time.

In an embodiment according to the present invention, the processing unit receives and provides the specific list through a device interface or communication module provided in the device.

In another embodiment according to the present invention, the device may be implemented by being included as an internal component in any one of the plurality of devices. In this embodiment, the processing unit extracts the time requirement and the information on the requesting device from the information provision request received when at least some of the plurality of devices transmit to the network, and extracts the extracted information, By recording the information item specified by the information provision request in the specific list, the specific list is provided. In addition, the processing unit, if the time requirement included in the information extracted from the received information provision request indicates a time shorter than the allowable lower limit time specified for the specified information item, a response message notifying that it has been modified and specified as the allowable lower limit time may be configured and transmitted to the originating device of the information provision request.

In an embodiment in which the device is implemented inside any one of the plurality of devices, the processing unit may include any information with a specified temporal requirement received from each of a plurality of execution modules executed in the one device In response to a request for provision of information on an item, a representative time value for temporal requirements included in the requests is determined, and a request for provision of information on the arbitrary information item including the determined representative time value is transmitted to the network. do. In this embodiment, the processing unit may determine, as the representative time value, a representative interval and a representative allowable time with respect to the requested interval and the allowable delay time, respectively. And, with respect to the representative interval, among a plurality of request intervals designated by each of the plurality of execution modules, it may be determined as a request interval of the shortest time.

In an embodiment according to the present invention, if the request interval of a specific attribute is included in the plurality of request intervals and the request interval of the specific attribute is different from the determined representative interval time length, the processing unit is configured to Notification timing for notifying any one of the plurality of execution modules that have designated the request interval of the specific attribute in accordance with the timing corresponding to the request interval of the specific attribute, of arbitrary information provided at each representative interval from another device Compensation information is recorded and used later. Here, the specific attribute means an attribute indicating that information should be provided according to a specified request interval. If the maximum temporal gap that can occur between the time point when the arbitrary information is provided from the other device at each representative interval and the time point corresponding to the request interval of the specific attribute is greater than a predetermined allowable gap, the processing unit , the allowable gap may be determined again as a representative interval for the plurality of required intervals.

In another embodiment according to the present invention, the processing unit, for a plurality of request intervals designated from each of the plurality of execution modules, may determine a time that is their greatest common divisor as the representative interval. In this embodiment, the number of times the processing unit provides arbitrary information for each representative interval from another device on the network is a multiple of the ratio of any one request interval among the plurality of request intervals to the representative interval. When the request is made, the provided arbitrary information is notified to any one of the plurality of execution modules designating the arbitrary one request interval as a time requirement.

In an embodiment according to the present invention, the processing unit classifies by characteristics for a plurality of temporal requirements specified in the information provision request for the arbitrary information item from each of the plurality of execution modules, the representative interval and The representative allowable time may be determined for each classification of temporal requirements, and an information provision request for the arbitrary information item including the determined representative interval and representative allowable time for each classification may be transmitted to the network. Here, the characteristic may be divided into a first characteristic in which the allowable delay time in the temporal requirement is equal to or less than the required interval, and a second characteristic in which the allowable delay time in the temporal requirement is longer than the required interval. In addition, the processing unit, received from an arbitrary device through the network, a first information provision request in which the temporal requirement of the first characteristic for one information item is specified and a second request in which the temporal requirement of the second characteristic is specified In response to an information provision request, according to the first characteristic, a memory space such as a transmission queue reserved for transmitting information corresponding to the one information item to the one device is provided according to the first characteristic; 2 It is divided into those to provide according to the characteristics.

In an embodiment according to the present invention, the processing unit, for a plurality of allowable delay times designated by each of the plurality of execution modules, the delay allowable time of the shortest time may be determined as the representative allowable time.

In an embodiment in which the device is implemented inside any one of the plurality of devices, the processing unit may include, from an arbitrary execution module executing in the one device, the arbitrary information item to which a first temporal requirement is specified. When a request for providing information on An information provision request for the arbitrary information item including the representative time value determined again for a set of requirements may be transmitted to the network. In addition, when a response message indicating that the time requirement specified in the information provision request has been modified is received after transmission of the information provision request to the network, as the modified time requirement included in the response message, the arbitrary information item You can change the representative time value that you have decided for.

In addition, in an embodiment in which the device is implemented inside any one of the plurality of devices, the determining unit provides information on an arbitrary information item received from any one of the plurality of devices through the network If the first temporal requirement specified in the request does not match one or more temporal requirements listed for the arbitrary information item on the specific list, based on the set of the one or more temporal requirements including the first temporal requirement Accordingly, the information provision method for the arbitrary information item is re-determined. In addition, the processing unit includes a device group designated as multicast according to the information provision method determined for the corresponding information item, and the same combination as the device combination of the group is provided by multicast for other information items. If there is also in the device groups determined as , one memory space is secured for accumulating information on the corresponding information item and the other information items to be transmitted in a multicast manner to the device combination.

And, in an embodiment in which the device is implemented inside any one of the plurality of devices, the at least some information items may include, among the information that the plurality of devices require for an intended function, the Items corresponding to the information specified to be provided by the device.

In one embodiment according to the present invention, the request interval requires that the information of the information item requested to be provided must be provided at least once within a specified time, or, otherwise, at least one generation is performed within the specified time. It may be asking for what it should be.

In an embodiment according to the present invention, if the processing unit is in a state in which the network load exceeds a preset standard, or if the current processing capacity of the device is less than or equal to a preset standard, it should be provided to at least some of the plurality of devices. It is also possible to configure one message for the information to be performed and transmit it in a multicast method targeting at least some of the devices.

According to another aspect of the present invention, an apparatus capable of determining a method of providing information between a plurality of devices connected to a network is separately specified for at least a portion of information required for an intended function of the plurality of devices, and a processing unit configured to provide, for each of the existing information items, a specific list by obtaining and recording the requested interval and delay tolerance for the information item, and information of the requesting device of the information item, and any information item on the specific list; In the sets of request interval and delay tolerance recorded for , if there are a plurality of sets in which both the requested interval and the delay tolerance are shorter than the first and second reference times respectively specified for the requested interval and the delay tolerance, and a determining unit configured to determine, by multicast, an information provision method of the arbitrary information item to a plurality of requesting devices recorded together with the plurality of sets. Here, the first reference time/the second reference time may be a specific time or a time designated as a time corresponding to a predetermined multiplier of the shortest required interval/delay allowed time in the sets.

According to another aspect of the present invention, a method for determining a method for providing information required by a plurality of devices connected to a network is a method of determining a method of providing information required by the plurality of devices for an intended function. Step 1 of providing a specific list in which a time requirement including a request interval for the information item and a requesting device specifying the time requirement are recorded together with each of the information items separately specified for at least a part; for each of the at least some information items on a list, based on one or more temporal requirements specified for the information item, providing information of the corresponding information item to one or more devices requesting provision of the corresponding information item and the second step of determining the information and generating information enabling the determined information provision method to be applied to the information provision of the corresponding information item.

According to another aspect of the present invention, there is provided a recording medium containing a program object that can be executed in any computing device. In addition, when the program object is loaded into a computing device and executed, information that is separately specified for at least a portion of information required for a plurality of devices connected to a network to perform an intended operation for the operation a function of having, for each of the items, a specific list recorded together with a time requirement comprising a request interval for the item of information and a requesting device specifying the time requirement; to determine a method of providing the information of the corresponding information item to one or more devices requesting provision of the corresponding information item based on one or more request intervals specified for the corresponding information item, and the determined information providing method is the It is constituted including program codes for performing a function of generating information that can be applied to information provision of the corresponding information item.

A method of determining a method of providing information for a plurality of devices according to a time requirement for the information according to the above-described present invention or at least one embodiment of the present invention described in detail with the accompanying drawings below, In providing the information to devices that require arbitrary information, it is possible to prevent a load from being biased toward either the device providing the information or the device receiving the information. That is, it is possible to provide information to a device that needs it in a way that uses the resources of the devices equally and efficiently.

In addition, when different devices request the provision of the same information, one resource is unnecessarily used for information reception due to differences in the frequency or urgency of the information between the different devices. By preventing this, resource use of each device can be optimized.

And, according to an embodiment of the present invention, it is eliminated that the difference in characteristics of the time requirements that applications specify for arbitrary information leads to a request for excessive information provision to a device that can provide the arbitrary information can do. Accordingly, it is possible to prevent wastage of resources of the device providing the information and the device receiving the information, as well as the available resources of the network.

1 shows the configuration of an information-based apparatus according to an embodiment of the present invention,
FIG. 2 shows an example of an information time requirement table configured by designating a device on a network that requires the information and time requirements for the information with respect to various pieces of information according to an embodiment of the present invention. will,
3 is a diagram schematically illustrating a method of determining a method of providing information on the basis of each device's request intervals for arbitrary information, according to an embodiment of the present invention;
4 is an exemplary flowchart of an operation of selectively changing the information provision method based on the delay tolerance for information by the provision method determining unit in the information-based apparatus of FIG. 1 according to an embodiment of the present invention; ego,
5 schematically shows a specific method in which a change is selectively made to the determined information providing method according to an embodiment of the present invention;
6 schematically shows a method of changing the determined information provision method by selectively integrating devices for which an information provision method is determined for an arbitrary information item according to an embodiment of the present invention;
7 exemplarily shows an information provision method setting table configured by recording the information provision method determined for each information item, according to an embodiment of the present invention;
8 is a view showing the configuration of a service agent executed based on hardware resources of a device connected to a network, exchanging information with other devices, and configured to perform an intended function according to an embodiment of the present invention. It is shown as
FIG. 9 is a diagram showing, according to an embodiment of the present invention, by determining representative time values of each information item for necessary information items and time requirements delivered from application programs running in an arbitrary device, It schematically shows the process of requesting the device to subscribe to the information item,
10 shows an example of a notification time adjustment table prepared to match the timing of notifying the application program of information provided from other devices to the interval requested by the application, according to an embodiment of the present invention;
11 is a diagram schematically illustrating a method of determining a representative request interval for specified request intervals for arbitrary information, according to another embodiment of the present invention;
12 is a diagram illustrating a process of notifying information to an application program according to a specified request interval by compensating for a difference between the determined representative interval and the required interval, according to an embodiment of the present invention;
13 is an example of a configuration of dividing time requirements by characteristics, determining a representative time value for each characteristic, and including the corresponding information item in a subscription request message according to an embodiment of the present invention; am.

Hereinafter, various embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the embodiments according to the present invention and in the accompanying drawings, the same reference numerals refer to the same components unless otherwise specified. Of course, for convenience of description and help in understanding, different numbers may be assigned to the same components as necessary.

1 is a diagram illustrating a method in which a device provides information to one or more other devices connected together in a specific network according to a time requirement requested for the information, according to an embodiment of the present invention; As an exemplary view of the configuration of an apparatus for performing the method, a plurality of devices connected to each other through a specific network and exchanging necessary information and operating (hereinafter, such that the plurality of devices can communicate with each other through a network) The entire configured system is referred to as a 'network system'. ), generating the information for any information (in this specification, the term 'generation' that is modified or described for 'information' means that the device itself For at least one device connected to a separate network with a different communication method or to generate information in a predetermined format by detecting, detecting, acquiring, or acquiring the state of a signal or arbitrary physical quantity from the exclusive peripheral part Generating state information that can be provided to other devices on the specific network by concentratingly receiving or acquiring the device set to collect information or composing the information obtained through the separate network into a message in a specific format It is used as a term that encompasses the is a device that

When the device 100 determines methods for providing information generated by a plurality of devices connected to a network to other devices according to an operation described in detail below, the determined providing methods are determined by the plurality of devices. As basic information to be complied with, it is implanted in each device or loaded into a provided memory space. As described above, since the information indicating the method of providing other devices with respect to the arbitrary information determined and generated by the device 100 is the basis for the operation of the plurality of devices, hereinafter, the device ( 100) is called an 'information-based device'.

The information-based apparatus 100 includes a display unit 114 that visually expresses input data in the form of images, images, characters, etc., a keyboard and/or a mouse, and a device that processes signals by them. A user input unit 115 configured to detect input and/or selection from a user and output corresponding input data or information (the user input unit includes a touch screen attached to the front of the display unit 114 ) ), a device interface 112 configured to have a port to which other storage devices or devices can be directly connected, or to exchange signals by a wireless signal method, and a selection from the user input unit 115 and / or a main processing unit 110 that displays a UI screen such as a necessary menu on the display unit 114 and performs a control operation necessary for performing an operation according to a user's request so that information input can be performed appropriately; A provision method determining unit 111 that determines a method of providing information items to other devices according to information items, devices requiring the information items, and time requirements required by each device, and the like; It is configured to include a storage unit 113 that provides a data storage space necessary for the operation of the main processing unit 110 or a process executed by it, and the operation of the provision method determining unit 111 .

The main processing unit 110, the central processing unit (CPU) provided with the command codes of the program recorded in the storage unit 113 by the pre-stored command codes, such as firmware (firmware) provided therein, or the firmware By executing, it may be configured in a form to perform various operations described in detail below together with the provided peripheral hardware elements. This is the same in the case of the provision method determining unit 111 .

In addition, in order to help the understanding of the concept and subject of the present invention, the components of the information-based apparatus 100 are functionally divided as illustrated in the drawings, but these components are further subdivided components as needed. may be decomposed into, or some components may be selectively combined with each other to form one component (for example, the provision method determining unit 111 is coupled to the main processing unit 110 to form one component ), according to an embodiment of the present invention, components not shown may be further included to configure the information-based apparatus 100 .

All functions of the information-based apparatus 100, in particular, the main processing unit 110 and the provision method determining unit 111, whose operation will be described in detail below, operate the operating system in a general-purpose computing device. This may be accomplished by a process or an executable module configured as instructional codes that are executed on the basis of. In this case, the program object of one or more files composed of command codes to be processes or execution modules in the general-purpose computing device may correspond to the main processing unit 110 and the providing method determining unit 111 . In addition, the files 110 and 111 are provided in a separate portable storage device or a recording medium such as a hard disk such as a server, and are directly connected to a general-purpose computing device to be copied/moved or downloaded online and the general-purpose computing device It can be loaded into the device's memory and then executed.

The general-purpose computing device in this executed state, according to the present invention, requires a corresponding information item for each of the information items that are classified and specified for at least some of the information required for the intended function of the plurality of devices. The information collected by recording the information provision method determined based on the time requirements specified by one or more devices, that is, the plurality of devices that generate basic information that must be complied with in providing information to other devices, etc. It becomes the information-based device 100 .

On the other hand, at least some of the functions of the main processing unit 110 and the provision method determining unit 111 are in the form of middleware or a platform on which application programs are based, or in the form of a part of the operating system (OS). It may be implemented in a general-purpose computing device, and by including the configuration of hardware, some of the functions described in detail below may be performed through the hardware.

Accordingly, the information-based apparatus 100 illustrated in FIG. 1 , in which the configuration and operation are described in detail in various embodiments according to the present invention, is viewed by the form of its implementation or the type of resource used. The scope of the invention is not limited.

Hereinafter, the information-based device 100 , the configuration of which is illustrated in FIG. 1 , is connected to a network and exchanges necessary information with each other and a plurality of devices that operate must comply with information generated by an arbitrary device to other devices. The method of determining the method of providing to the will be described in detail.

In the storage unit 113 of the information-based device 100, as illustrated in FIG. 2 , for each piece of information generated by a plurality of devices on a network system, identification information (hereinafter referred to as hereinafter) assigned to the information is provided. , referred to as an 'information identifier.') Item 20, identification information 21 of a device that supports the information item, that is, capable of providing information designated as the information item, and a default value specified for the information A structured table in which a delay time item (22) is included, and the combination of the identification information of the device requesting the information and the temporal requirements that the device requires for the information are included in such a way that the items of the corresponding information identifier are individually appended (200) (hereinafter, abbreviated as 'information time requirements table') is stored in advance.

The time requirement required by the device for any information item is, as shown, a time interval (hereinafter referred to as a 'request interval') that specifies that the information must have at least one notification or occurrence within that time. ) and that notice must be given from the time when the information is generated at the latest before the time elapses (or that the information must be notified again before the time elapses from the time of the previous notice) It may be determined as a set of elements of the designated time interval (hereinafter, referred to as 'allowable delay time'). Of course, depending on the embodiment, other temporal elements may be further included and determined.

In the embodiments according to the present invention, any information that is described as having a time requirement specified is transmitted in the form or method and/or in the form or method of transmission according to the communication method or protocol to which the principles and concepts of the present invention are specifically applied. The name may be set differently. For example, the information described in this specification as determining the provision method may be information provided according to the method of SOME/IP. In this case, it corresponds to an event message for notifying an arbitrary event, or It may correspond to other types, for example, a method call message, a service offer message, and the like. In addition, it may be information provided according to a communication method different from the specific communication method after format conversion of signals or data transmitted according to a specific communication method. For example, it may correspond to a data frame in which a signal or data transported by a frame according to a controller area network (CAN) method is collected by type or temporally, and information is transmitted after format conversion. In addition, if the device connected to the network is defined to be able to distinguish and identify the type of information it transmits to other devices, and if it is allowed to specify the time requirement for the information, the purpose of use or the form of transmission , may be information referred to in the description of the present invention irrespective of its type, or name.

In the present invention, if an information identifier that allows information to be distinguished from other information and can be identified can be uniquely identified from a plurality of pieces of information, regardless of any elements (letters, symbols, numbers, etc.) and what format it is composed of It may correspond to an information identifier that refers to and describes a related operation. If the SOME/IP protocol is applied, a total of 32-bit event identifier consisting of 16-bit service ID, one-bit '1', and 15-bit event ID, 16-bit service ID, and one Bit '0' and a message identifier of 32 bits configured as a 15-bit method ID, etc., are referred to in the description of the present invention. (21) may apply.

In the information time requirement table 200 illustrated in FIG. 2 , the information is provided according to the time requirement that requires the corresponding information, that is, the desired time requirement (in this specification, this is also referred to as a 'time requirement'). Identification information 23 (hereinafter, abbreviated as 'device identifier') of the device requesting is registered for each corresponding information item. In this case, any type of device identifier may be adopted and used as long as it uniquely identifies one of a plurality of devices that are connected to a network and operate while exchanging information. For example, if each device is assigned a static IP address and configured to be used, the IP address may be used as a device identifier, and a physical address implanted in a network adapter provided for accessing the network of the device, e.g. For example, the MAC address may be used as the device identifier. Of course, even for other types of information, if different values are assigned to each device, and the assigned value is transmitted together in a data frame or message exchange for communication between devices, then that kind of information is It can also be used as an identifier.

The information time requirement table 200 illustrated in FIG. 2 is, for any information item Inf_ID _N , a time requirement required for the information by any device Dev_ID _Q that needs the information, that is, , it is built in a way 210 that is linked and recorded for a set of the request interval (req_IT _NQ ) and the delay allowable time (alw_DT _NQ ). Functions of applications to be ported and executed may be designated based on previously known information.

As a more specific example, for any information item, if the application programs XA and XB to be implanted and executed in any device D _X each require 50 msec and 100 msec for their _function , the arbitrary The request interval for the information item of . In the actual application environment, this is a special-purpose process or application program or an execution module such as middleware running on the device _DX (a 'Service-Oriented Agent' (Service-Oriented for this special-purpose execution module) Interfacing Agent), and simply called 'service agent'. am.

The delay tolerance can be designated in the same way. For example, if application XA requests 5 msec for the delay tolerance and application B requires 10 msec, the delay tolerance that device D _X requires for the corresponding information item is 5 msec.

In determining the time requirements of the device based on the time requirements required by the applications for the information item, the determined time requirement is the minimum time (hereinafter, 'allowed') that can be provided for the information It is collectively called 'lower limit time', and when dividing the interval and delay time, they are called 'allowable lower limit interval' and 'allowable lower limit delay time'). For example, an arbitrary information item has a generation period of 20 msec, so the allowable lower limit interval is 20 msec. In this case, instead of designating it as 10msec, the request interval for the corresponding information item of the arbitrary device is, of course, designated according to the allowable lower limit interval, that is, 20msec. The same is true for the delay tolerance time.

The permissible lower limit time for the information listed as each item in the information time requirement table 200 is determined in advance according to the attribute, characteristic, or source of the information, and is used in the preparation of the information time requirement table 200 . As a more specific example, if the information is generated at a fixed period, the generated period may be the allowable lower limit interval. A frequency of 10% or 25% may be the lower acceptable interval. If it is aperiodic and the frequency of occurrence is low, a predetermined time, for example, several minutes, may be designated as an allowable lower limit interval.

In the case of the lower permissible delay time, depending on the data processing capability of the device generating the information, or depending on the capability of the resource to acquire the signal or data from the exclusive periphery of the device or other connected networks, each can be specified. For example, if the performance of the resource generated through data processing, acquisition, or acquisition of the corresponding information in the device is very good, the smallest time, for example, 5 msec, or longer if the performance is good , For example, 10 msec can be specified, and 20 msec longer than normal performance can be specified. Of course, this is only an example, and a lower limit delay time allowed for the corresponding information may be designated as more granular times of different numerical values.

On the other hand, in the above description, examples of a method in which a time requirement required by an arbitrary device is specified is that the time requirement for arbitrary information of the device is determined by the application programs running in the device and the arbitrary information item. It is merely an example to show that it is determined according to the time requirements required for In this way, the time requirements of the device can be determined.

In the information time requirement table 200, as mentioned above, a default delay time 24 is designated for each information item. This default delay time is a time requirement for a device with an identifier whose time requirement for the corresponding information item is not registered in the information time requirement table 200 to provide information for the corresponding information item in the network system actually built after that. When a request is made without an issue, referring to the information time requirement table 200 provided in advance by the device receiving the request, it is a time designated to be applied as the maximum allowable delay time when providing the generated information.

In addition, in the information time requirement table 200, there may be items 220 listed without a device requesting information provision for the corresponding information item. In this information item, only the default delay time is designated and operated, and this information item is information generated by any device itself without a request for information provision from other devices, for example, specific information for other devices. It may correspond to an item of information that requires information or a specific action, or an item of information that transmits the result in response to an action or information request irregularly received from another device.

The information-based apparatus 100 of FIG. 1 may be implemented as a separate, independent device, or may be implemented in a device such as an electronic control unit. In this implementation, among the components of the device illustrated in FIG. 1 , components such as the user input unit 115 and the display unit 114 are excluded, and instead, the communication module provided in the device and the necessary hardware resources and By combining them, the device is configured in a form that is inherent in the device. And, the device configured in this way may be the aforementioned service agent. That is, in the specific operations of the information-based apparatus 100 to be described below, operations that are not limited due to inherent in the device may be performed as it is in the service agent implemented in the form embedded in the device. The service agent implemented in this way receives the information items required by the applications running on the device and the time requirements for the information items, and transmits the time requirements to the device in charge of the information items when the information provision request is made. The requirements are determined, and in the following description of the determining operation, methods other than the determination method of the request interval and delay allowable time exemplified as specific numerical values above will be described in detail.

The information time requirements table 200 prepared as illustrated in FIG. 2 is the main processing unit 110 ) receives, or reads from a removable and directly connected storage device, and stores it in a pre-designated location of the storage unit 113 or as a pre-designated file name.

When the user of the information-based apparatus 100 intends to determine an information provision method for each information item 20 based on the information time requirement table 200 as illustrated in FIG. 2 , the user input unit 115 ) through the main processing unit 110 to request it. The main processing unit 110 configures the menu screen necessary for such a user request or selection and displays it on the display unit 114 .

If there is this request, the main processing unit 110 checks whether there is an information time requirement table in a predetermined place or in a predetermined file name of the storage unit 113, and if not, configures a guide screen to configure the display unit 114 ) to request the user to provide the information timetable. When an information time requirement table is provided or obtainable location information (eg, URL) is given, it is obtained through the network and stored in the storage unit 113 as described above, and then the stored information time requirement table While transmitting the information that can access 200 to the provision method determining unit 111, it instructs the determination of the provision method for each information item.

When this command is applied, the provision method determining unit 111 analyzes a time requirement for each information item of the information time requirement table 200 of the storage unit 113, and based on the analysis, the corresponding information Decide on the delivery method for the item.

Hereinafter, a method in which the provision method determining unit 111 determines a provision method based on a time requirement for each information item on the given information time requirement table 200 will be described in detail.

3 is a diagram schematically illustrating a method of determining a method of providing corresponding information based on a request interval of each device for information 30 having an information identifier of Inf_ID _N according to an embodiment of the present invention. The information item 30 in which the required interval of each device is shown in a chart in FIG. 3 corresponds to any one entry 210 in the information time requirement table 200 of FIG. 2, and for the device identifier on the table, a series It is merely a number, and a series of distinct numbers corresponds to the device identifiers (Dev_ID _P ,..,Dev_ID _Q ,..) as described above.

The provision method determination unit 111, upon receiving a determination command of the information provision method from the main processing unit 110, the order of the items listed in the information time requirement table 200 configured as illustrated in FIG. Accordingly, for each registered item, a method of providing the corresponding information item 30 is determined in the same manner as will be described below with reference to FIG. 3 .

The provision method determining unit 111 first determines an information provision method for a corresponding information item based on a request interval. To this end, the provision method determining unit 111, the request intervals ( _{req_IT Ni} , In the list 24 of i=P,..,Q,...), the shortest request interval 301 is found. Then, for the found request interval 301 , the first grouping time period 311 extended by a predetermined limit magnification (LM _G ) (IT _MIN1 ·LM _G ) is selected. That is, if the shortest required interval (IT _MIN1 ) is 10 msec and the preset limiting magnification (LM _G ) is 4, the first grouping time period of 40 msec is selected by multiplying it.

When the first grouping time period 311 is selected in this way, it is checked whether all requested intervals are included in the time period (ie, whether all requested intervals are shorter than the first grouping time period). If none of them belong to the first grouping time period 311, the provision method determining unit 111 separates and records the device identifiers requesting the request interval belonging to the first grouping time period 311 into one group separately, The shortest request interval is found again from the remaining ungrouped request intervals (302). For the found required interval (IT _MIN2 ), as described above, the secondary grouping time period 312 extended by the limit magnification (LM _G ) is selected (IT _MIN2 ·LM _G ), and the selected secondary grouping It is checked whether the remaining required intervals all fall within the time period 312 .

When all of the remaining request intervals belong to the second grouping time period 312, the identifiers of the devices designating the remaining request intervals are recorded as another group, and then the grouping operation for the requesting devices is terminated, and , otherwise, the above-described operation is performed in the same manner for the remaining request intervals that are not grouped in the second time.

After terminating the grouping operation based on the request times of the requesting devices, the providing method determining unit 111 checks the number of groups of the requesting devices recorded accordingly. The example of FIG. 3 shows that the requesting devices are recorded 320 classified into two groups by the required intervals for their corresponding information item 30, but may be classified in a larger number; All requesting devices may be assigned to just one group. This corresponds to a case in which all request intervals for the corresponding information item 30 belong to the first grouping time period in which the shortest request interval among them is extended by the limit magnification (LM _G ).

With respect to the limited magnification (LM _G ), the user of the information-based apparatus 100 can set it to an arbitrary value through an appropriate environment variable setting window provided by the main processing unit 110 to the display unit 114 . and the set value is transmitted to the provision method determining unit 111 to be used as described above.

For the limiting magnification, increasing the value is according to the method described below, even for devices with a large difference in the required intervals, their requested intervals are grouped into one group and the corresponding information is provided. This means that the method can be specified as multicast for those devices, and conversely, reducing the value makes it impossible for them to be grouped into the same group for devices with a somewhat large difference in the request interval, so that the corresponding information The unicast method that is provided individually for the broadcaster increases the possibility that the unicast method will be designated as the information provision method (or the multicast target will be divided and specified).

The multicast transmission method is a very efficient method in terms of network load or resource usage in a transmitting device because it can provide necessary information to a plurality of devices at the same time as a single message. However, since resources are immediately occupied by a device receiving the information by a method such as an interrupt, it can be said that the influence of resource loss is relatively large when information is unnecessary to itself. That is, if there is a difference in the request interval, it is advantageous in terms of the receiving device to be designated as an individual information providing method of unicast. However, if the information provision method is specified in unicast even when the request interval is close to each other, the efficiency of the transmitting device decreases and the network load increases while the receiving device does not receive any real benefit from resource use.

If the limiting magnification (LM _G ), which is applied in the above-described grouping for the requested intervals of information designated by each device, is set to be large, multicast increases in the information providing method specified for the requested intervals and Unicast decreases, and vice versa if the limiting magnification is reduced. As for the limiting magnification, the efficiency of resource use of the information providing device and the reduction of the network load, and the unnecessary in the device receiving the information From the point of view of resource use, it is desirable to set a value that does not lean toward either side.

Meanwhile, when the number of groups is confirmed, the provision method determining unit 111 determines the number of devices belonging to the corresponding group for each group. Then, it is checked whether the number of devices belonging to the corresponding group is equal to or greater than the preset multiple notification threshold, and if the number is greater than the threshold, multicast addresses are assigned to the corresponding device group to designate the information providing method as multicast.

The multiple notification reference value also, similar to the above-described limiting factor, the main processing unit 110 receives a desired value from the user and transmits it to the provision method determining unit 111, so that it can be used to determine whether to allocate a multicast address. there is. The multiple notification reference value may be, for example, two. This means that if there are at least two devices whose respective request intervals are within the difference between the time intervals determined by the preset limit magnification, the method for providing the corresponding information is designated as multicast.

In the example 320 of grouping devices based on the information request intervals illustrated in FIG. 3, devices above the multi-notification threshold belong to each group, and different multicast addresses are assigned to each group ( 321) is shown. If, unlike the one illustrated in FIG. 3 , when the request intervals of each device for the corresponding information item 30 all belong to the first grouping time period, one multicast address is naturally assigned to the corresponding information.

On the other hand, when checking the number of devices belonging to each group, if only one device belongs to the corresponding group, for example, if only the requested interval 303 of the device of identifier 5 in FIG. 3 belongs to the third grouping time period , the provision method determining unit 111 does not assign a multicast address to the group, but designates the information provision method as unicast ( 330 ). Regarding the designation of the unicast method, it is not necessarily necessary to separately record information indicating the designation. This is because, of course, a device that does not belong to a group of devices to which the multicast method is designated can be recognized as the unicast method is applied. In the following description, the phrase "designated as unicast for the information provision method" means explicitly designating the information provision method as specific information, or includes all things that are not specified as a multicast method should be understood in the sense that

In the embodiment described with reference to FIG. 3 , a time period serving as a reference for grouping the request intervals is changed according to the time of the request intervals. That is, when the shortest time in the request intervals is 10 msec and 20 msec, the latter becomes twice as large in the first grouping time period. In another embodiment according to the present invention, it is also possible to have a fixed length with respect to the time period for grouping the requested intervals. For example, the first grouping time period is 0 to 15 msec, the second grouping time period is 15 to 50 msec, the third grouping time period is 50 to 200 msec, and the like may be specified and used for grouping of the requested intervals.

The provision method determining unit 111, as described above, when determining the information provision method based on the request intervals of the devices for the corresponding information item 30, based on the delay allowable time of the devices for the corresponding information Accordingly, the determined information provision method is selectively changed.

4 is an exemplary flowchart of an operation of selectively changing the information providing method based on the delay allowable time of the provision method determining unit 111, and FIG. 5 is an example of a specific method of selectively changing the information providing method. shown schematically. An operation of selectively changing the information providing method determined based on the request intervals will be described in detail with reference to FIGS. 4 and 5 .

The provision method determining unit 111, for the information item 30 that is currently determining the information provision method, if there are groups ( 320 in FIG. 3 ) to which the multicast method is designated based on the request intervals of devices, One is chosen according to the order established for them. And, delay allowable times (510 _i , i=1,2,3,..) for the corresponding information item of the devices in the selected group 322 (hereinafter referred to as 'target allowable times') The shortest time is found as a target, and the found delay time allowed (510 ₁ ) is designated as the base time (S401).

If there is no multicast in the information providing method determined based on the request intervals, the provision method determining unit 111 skips the operations described below with reference to FIGS. 4 and 5 and performs unicast for some devices. An operation of selectively changing the method by checking whether the method can be integrated into multicast or separated from the determined multicast groups and integrated into a separate multicast group (hereinafter, this is referred to as 'integrated change'). proceed with This operation will be described later.

The provision method determining unit 111, after designating the base time, the base time (DT _MIN1 ) than the next shorter (DT _MIN2 ) delay allowable time (510 ₂ ) and designates as a confirmation target (S402). Then, the time difference dD ₁ between the confirmation target time 510 ₂ and the base time 510 ₁ is calculated (S403). When the time difference (dD ₁ ) is calculated in this way, the providing method determining unit 111 is an information item 30 in which the device designating the confirmation target time 510 ₂ as the delay tolerance time is currently determining the information provision method (30) It is determined how many request intervals are shorter than the calculated time difference dD ₁ in the request intervals 520 for all information items requested to a device supporting .

That is, in the information time requirement table 200 illustrated in FIG. 2 , all information items (Inf_ID ₃ ) that can be provided by the device (Dev_ID _Z ) supporting the information item (Inf_ID _N ) that is currently determining the information provision method _{... _} figure out the number of

Meanwhile, the allowable delay time alw_DT _ij specified in the information time requirement table 200 may be shorter than the request interval req_IT _ij for the same information item or longer than that. In the former case, the request interval acts as a requirement that the generated information must be provided within a specified delay tolerance from the generation of the information. However, in the latter case, unlike the time constraint on such provision, the request interval serves only as a requirement for the interval at which the information should be generated, and the delay tolerance time for the provision of the generated information is bound by

Accordingly, the operation of the request interval is different depending on whether it is longer or shorter than the allowable delay time for the same information item. In the case of a long time, it acts to constrain the timing of providing the generated information, and in the case of a short time, it acts to constrain the interval at which information is generated. In this way, when it is necessary to separately refer to the required interval in which the characteristics of the time value can be divided into the former and the latter, use the term 'notification interval' for the former and the term 'necessary interval' for the latter. use.

The designation of the required interval as the required interval for any information item may be due to the intention that information generated (or generated) twice or more according to the specified required interval is provided at one time before the allowable delay time elapses. there is.

In the above description, the provision method determining unit 111 determines how many request intervals are shorter than the calculated time difference dD ₁ , within the time difference dD ₁ , the device (example of FIG. 5 ) Hereinafter, the device with device identifier 5, temporarily referred to as the 'first device') is to check whether there is an information item that is likely to be provided at least once. If there is such an information item, it is simultaneously provided in multicast for the device to which the current confirmation target time (510 ₂ ) is designated and the device to which the base time (510 ₁ ) is designated (hereinafter, temporarily referred to as a 'base device'). Rather than doing so, it may be advantageous to separate the provision of information to the first device. The reason is that after the specific information generated for the same information item 30 is notified to the base device, before the calculated time difference dD ₁ elapses, other information to be notified to the first device occurs This is because there is a sufficiently high probability that the specific information will be provided together with the other information at once. The technical basis for providing information in this way will become clear in the following description of the operation of providing information through the transmit queue.

Rather than notifying the information of different information items individually, it is very efficient in use of resources if the information is provided at once. This is because, when the data is aggregated into one data frame, a loss rate due to overhead in data transmission can be reduced, and also a loss due to a change in resource use for each individual transmission is greatly reduced.

If there is no request interval shorter than the calculated time difference dD ₁ , it changes the information provision method of the corresponding information item to the base device and the first device to an individual provision method, and the generated information is sent to the base device. Even if it waits for as much as the time difference (dD ₁ ) after providing the information, the possibility of other information to be provided to the first device is low in the device (Dev_ID _Z ) providing the information of the corresponding information item, so the information generated is eventually transmitted to the first device can only be provided. This means that even if the information item 30 is changed to an individual information provision method for the base device and the first device, there is a slim possibility that there will be any real benefit.

For this reason, the providing method determining unit 111, the first device for all information items required from the corresponding device (Dev_ID _Z ) (a device that supports the information item currently determining the information providing method) In the required intervals, it is checked how much shorter than the calculated time difference dD ₁ is, at this time, the required interval to be checked must be a time constraining the provision of information, so as described above, if it is a required interval ( When the allowable delay time is longer than the required interval ), the allowable delay time, which is not the required interval, is compared with the time difference dD ₁ .

In an embodiment according to the present invention, when the request interval is a notification interval, it may be compared whether a time obtained by adding a delay allowable time to the notification interval is shorter than the time difference dD ₁ .

In the example of FIG. 5 , since there is no required interval (or delay allowable time) shorter than the calculated time difference dD ₁ , the request for a time shorter than the calculated time difference dD ₁ identified from the above comparison The number of intervals is zero. Accordingly, in the process (S405) of comparing the identified number with the predetermined grouping reference value, it is confirmed that the identified number is less than or equal to the reference value, and the current confirmation target time 510 ₂ is set to the same subgroup as the base time 510 ₁ . Bind (S411).

The grouping reference value may be set to 1 or more. When this value is set small, the possibility that the time to be checked is grouped into the same subgroup as the base time is relatively reduced compared to when the value is set large. This increases the possibility that a group of devices designated as a multicast method for a corresponding information item will be divided into subgroups each designated with a multicast method according to an operation described below. Accordingly, the grouping reference value is determined in consideration of this point, and is set in the main processing unit 110 as one environmental variable parameter, and the providing method determining unit 111 is determined from the shared environment variables. You can use it by checking the value.

After grouping the current check target time 510 ₂ into the same subgroup as the base time 510 ₁ , the check target time 510 ₂ checks whether the last delay allowed time in the target allowed times (S412) ). If not the last, the provision method determining unit 111, the next shorter (DT _MIN3 ) than the current confirmation target time (510 ₂ ), from the target allowable time to find the delay allowable time, the found delay allowable time (510 ₃ ) ) is designated as the time to be checked (S413).

In this way, when the confirmation target time is newly designated, the providing method determining unit 111 performs the same operation as described above for the confirmation target time 510 ₃ and the previously designated base time 510 ₁ ( S403 ). , S404, S405). The time difference dD ₂ calculated in this process is greater than at least three required intervals in the example of FIG. 5 . If the grouping reference value is set to 2 or less, since the number of identified request intervals is greater than the grouping reference value, the provision method determining unit 111 is set to the same subgroup as the current base time 510 ₁ . It is determined as one subgroup for the bundled delay allowable times (S421).

And, it is checked whether the current confirmation target time 510 ₃ is the last item in the target allowable times (S422), and if not the last item, the current check target time is newly designated as the base time (S423), and the base After finding a delay allowable time shorter than the time from the target allowed times, and designating it as a check target (S402), the above-described operations are performed again.

While the above-described operation is in progress, if the current confirmation time is confirmed as the last allowable delay time in the target allowable times (S412 or S422), the providing method determining unit 111 determines the subgroup (S422) At a later time, only the current confirmation target time is designated as a subgroup (S424), and for each subgroup determined in the above-described process, the number of allowable delay times belonging to the subgroup is checked, and the Based on the information provision method, for the group 531 to which one multicast address is assigned because the information provision method is designated as multicast, it is determined whether to change the designation, and the multicast address is selectively reallocated according to the decision. becomes (S430).

If the determined number of subgroups is one and the number of delay allowable times in the subgroup is the same as the number of target allowable times, the provision method determining unit 111, for the currently selected group, selects the information provision method. Without any changes to the information item 30, a group of devices in the following order in which the multicast method is specified for the corresponding information item 30 is selected, the operation according to the flowchart illustrated in FIG. 4 is performed, and the information providing method is designated as multicast When there is no more group, the determined information provision method, described later, is checked, and the aforementioned integrated change is selectively applied.

If the determined number of subgroups is 2 or more, the provision method determining unit 111 checks the number of delay tolerance times belonging to the subgroup for each subgroup, and if there is a subgroup with the number of one, the subgroup With respect to a device with a designated delay time belonging to a group, the information provision method for the corresponding information item is designated as unicast, so that the information provision method is separated from the group of devices designated as multicast according to the request intervals.

A group of devices to which one multicast address is assigned by re-allocating a multicast address to each subgroup if the number of delay tolerance times in each subgroup is two or more, or is greater than or equal to the above-mentioned multiple notification threshold. (531) is reclassified into respective multicast groups (532 and 533) (p51). That is, multicast groups in which the number of multicast target devices are reduced are designated.

In the embodiment described with reference to FIGS. 4 and 5, when the number of requested intervals shorter than the time difference between the delay tolerance times is equal to or greater than the grouping reference value, the delay tolerance times related to the time difference (that is, devices that have designated the times) were divided into different subgroups. In other words, it was designated so that information provision for the devices was carried out separately from each other. The fact that information is provided separately means that all of these information are provided individually by the unicast method, by different methods for unicast and multicast, or by the multicast method with different addresses. means progress. In another embodiment according to the present invention, regardless of how many request intervals belong to the time difference between the allowable delay times, information provision may be specified to proceed separately from each other based on the absolute size or ratio of the time difference. For example, if the time difference is 1 second or more, or the ratio of the time difference to the relatively short allowable delay time is 100 or more, the information provision can be designated to be carried out separately for the devices for which the delay allowable times for which the time difference is calculated are specified. may be

In another embodiment according to the present invention, delay tolerance times are subgrouped according to the method described with reference to FIGS. 4 and 5, and the information providing method is changed or determined according to the result, but the delay tolerance time having different characteristics of the requested interval of the subgroups unconditionally. In other words, it is changed so that information is provided unconditionally for them. For example, according to the request interval, when the first to third temporal requirements are primarily determined as one multicast group, the first request interval and the second request interval are the notification intervals, and the third request interval is necessary If it is an interval, for the device for which the third allowable delay time is specified, the first delay allowable time and/or the second allowable delay time is changed so as to be differentiated from the provision of information to the designated device.

By the method of selectively changing the information provision method determined based on the request intervals as described above based on the delay tolerance time, a request interval that is relatively short compared to other request intervals, or a predetermined A device designating a request interval shorter than the first reference time and specifying a relatively short delay tolerance time compared to other delay tolerance times or a delay tolerance shorter than the pre-specified second reference time, It is designated to proceed separately from the provision of information to other devices. That is, if there is one device having such a time requirement for the information item 30 that is currently determining the information provision method, the device will be determined to be unicast to receive the requested information independently. The multicast method of the address serving as the target device will be determined.

In an embodiment according to the present invention, the operation of selectively changing the information provision method as described above for a group in which the information provision method is designated as multicast based on the request intervals for any information item is performed. Upon completion, the provision method determining unit 111 selectively performs the following integrated change operation for integrating the information provision method into multicast based on the delay allowable time.

The operation of integrating the information providing method into multicast may be performed only for devices that have requested the required interval as the required interval. That is, it can be performed only for devices in which a delay tolerance longer than the required interval for the corresponding information item is designated as a time requirement.

6 schematically shows a method of selectively performing an integrated change to an information providing method according to the present embodiment. In the present embodiment, the provision method determining unit 111 first selects only the devices for which the required interval for the current information item 30 is the required interval. Then, the longest delay tolerance time (alw_DT _NP ) and the next longest delay tolerance time (alw_DT _NQ ) are respectively found with respect to the delay tolerance times of the selected devices. In the following description, the former device to which the allowable time is designated (Dev_ID _P ) is referred to as a 'back-tong device', and the device to which the latter allowable time is designated (Dev_ID _Q ) is referred to as a 'first-tong device'.

Then, the difference (DT _G ) between the two found times is calculated, and the time difference (DT _G ) is compared with the request interval req_IT _NP (ie, the required interval) designated by the Hutong device Dev_ID _P ( S601 ). As a result of the comparison, if the ratio of the time difference (DT _G ) to the delay allowable time (req_IT _NP ) of the _aftertong device is less than the predetermined separation reference number (NS ), the provision method determining unit 111 is the It is checked whether the devices belong to a group designated as multicast for the information providing method (S602).

If it does not belong to the same group, the provision method determining unit 111 changes and designates a group to which the multicast provision method is applied for both devices Dev_ID _P and Dev_ID _Q (S603). That is, a separate multicast address is allocated to the devices. Devices that are integrated into one multicast group originally belonged to different multicast groups, and due to their separation, when the number of devices remaining in each existing group becomes 1 or becomes smaller than the above-mentioned multiple notification threshold, For them, follow-up measures are taken to cancel the designation of the existing multicast method so that the unicast method is designated. Of course, such follow-up measures are unnecessary if unicast was specified for the information provision method before being integrated into one multicast group.

The ratio of the calculated time difference (DT _G ) to the delay tolerance time (req_IT _NP ) specified by the Hutong device ( _{Dev_ID P} ) is equal to or greater than the separation criterion number (NS ), or both devices already belong to the same multicast group If there is, the previously designated method is left as it is without an integrated change to the above-described information provision method.

In another embodiment according to the present invention, when the ratio of the calculated time difference (DT _G ) is equal to or greater than the separation reference number ( _NS ), the front and rear devices are designated as the same multicast group based on the required interval. If there is, the provision method determining unit 111 may cancel the designation of the multicast method for them. That is, once the information providing method is changed to unicast for the Hutong device, the operation described later can be performed using the delay tolerance specified by the Hutong device as a new standard.

If these devices are designated as one multicast group for the Hutong device and the first communication device, whenever the delay tolerance time (alw_DT _NQ ) of the first communication device passes instead of the delay tolerance time (alw_DT _NP ) designated by the Hutong device, each time elapses, Information generated for each required interval (req_IT _NP ) specified for the corresponding information item will be aggregated and provided. That is, whenever information is provided, the corresponding information will be provided by being less collected for as much as the time difference DT _G . The ratio of the time difference DT _G to the delay allowable time req_IT _NP of the Hutong device corresponds to the number of generated information that is less collected. Therefore, for the separation reference number ( _NS ), it is set as an appropriate number that becomes a boundary at which the benefit of being provided simultaneously with other devices is large compared to the loss, even if the latter device is provided with information that is collected to some extent. This separation reference water may also be set as a parameter of an environment variable and transmitted to the provision method determining unit 111 through the main processing unit 110 to be used.

On the other hand, as described above, when both devices are integrated into one multicast group and designated for the information providing method, the provision method determining unit 111 performs the next find a long time with Then, using the found delay tolerance as a new standard, the time difference between each integrated delay tolerance time (alw_DT _NP , alw_DT _NQ ) is calculated, and the required interval (req_IT _NP , req_IT _NQ ) between the rear and front devices of the obtained time difference ) is obtained and compared with the separation reference number (N _S ). If any one of the ratios is equal to or greater than the separation criterion, a multicast group designated for integration is determined, and the delay tolerance time determined by the new standard and the next longest delay tolerance time are the targets, that is, the delay of the Hutong device. By performing the same operation as described above using the allowable time and the allowable delay time of the communication device, it is decided whether to designate the integration of the information providing method for them.

If all of the previously obtained ratios are smaller than the separation reference number ( _NS ), the provision method determining unit 111, even for the device for which the delay tolerance time determined by the new standard is specified, the previously designated multicast group Change the method of providing information about the device by including it in the

Among the previously selected devices, if there is still a device that needs to be checked for an integrated change in the information provision method, the integrated change of the information provision method is selectively applied to the remaining device(s) in the same manner as described above. By doing so, the integrated change operation for the information provision method based on the delay tolerance is completed.

After the information provision methods are determined by the method described so far for any one information item listed in the information time requirement table 200, the provision method determining unit 111 determines the information provision methods, One or more items 710 are listed in the information providing method setting table 700 in the format illustrated in FIG. 7 , and the following items are selected in the information time requirement table 200 in the same manner as the corresponding information Decide how to provide information about an item.

The information provision method is determined by the provision method determining unit 111 performing the above-described method for each information item of the information time requirement table 200, specifically, each information item for which a time requirement is specified. After that, the information of the information providing method setting table 700 of FIG. 7 is completed. Then, the providing method determining unit 111 determines the provision method for information items while delivering information that allows the information to be accessed to the information providing method setting table 700 in which the information is completed, to the main processing unit 110 . to indicate that this has been successfully terminated.

Then, the main processing unit 110, according to the user's request through the user input unit 115, through the device interface unit 112, the information providing method setting table 700 based on the Together with the information time requirement table 200, the completed information providing method setting table 700 is provided to an external storage device or device. The information provision method setting table 700 and the information time requirement table 200 provided in this way are devices or devices such as electronic control units that are connected to a network and operate based on services (in this specification, they are referred to as 'nodes'). ) provided or ported to, and running on that node, by the aforementioned service agent, at the time of provision or presetting for provision of the corresponding information to the service agent of another node, and/or necessary Referenced when generating and transmitting information.

In the embodiments of the present invention described so far, the information-based apparatus 100 forms each node in a network system, and a device to use the information providing method setting table configured according to the method as described above; is assuming that it is configured as a completely independent and separate device. However, the specific realization of the principles and technical ideas of the present invention does not necessarily require that it be configured as a separate device independent of the device that will use the information providing method setting table 700 .

Therefore, unlike the previous embodiments, even when the main components of the information-based apparatus 100 are included as a part of devices forming each node in the network system, the principles and technical ideas of the present invention are In one embodiment, the same may be realized as intended. In other words, the description of the above-described embodiments is included in each device as one functional block of the aforementioned service agent by the provision method determining unit 111, and the operation of the above-described information-based device It can be applied as it is when realizing (this is called 'device-internalized configuration').

However, in the case of such a device-internalized configuration, in the description of the above-described embodiments, the part in which the main processing unit 110 receives information through the user input unit 115, etc., is a network connection unit included as a unique function of the device. It can be replaced with a description of transmitting and receiving information corresponding to a specific external device or server, etc.

And, in the case of a device internalized configuration, in addition to the creation operation of the information provision method setting table 700 based on the given information time requirement table 200 of the provision method determination unit 111, including the provision method determination unit The configured service agent may perform additional various operations not previously described. Hereinafter, the configuration and operation of the service agent that performs the operation of the above-described information-based device in a state implemented in the device will be described in detail.

FIG. 8 shows the above-described information based on the time requirements to be transmitted together with the information items required by other devices connected to the network or based on the information timetable provided from the outside through the network or implanted in advance. As shown, prepare the information provision method setting table and refer to the prepared information provision method setting table to determine the configuration of a node, for example, an electronic control unit, that can provide various information generated by itself to other devices. it is foreshadowed

As described above, the device 80 corresponding to the node on the network is provided with a service agent 800 that realizes the main operation of the information-based device in the device, and the service agent 800 is the device ( 80) intervenes between the application programs (10 _i , i=1,2,..) and the operating system (OS), and various signals or information related to state variables in charge of the device 80 It is possible to inquire and set signals or information related to state variables in charge of state variables in charge of devices corresponding to other nodes on the network. In order to receive the value of the corresponding point in time or at every arbitrary period, the operation of subscribing to the information item corresponding to the state variable in the other device and the operation of preparing the information provision method setting table as described above are performed do.

The service agent 800 of FIG. 8 sends such a request so that an arbitrary application program 10 _i can query and set service-based information, and make a subscription request to a service-based arbitrary information item, A service interface unit 801 configured to interpret according to a predetermined service syntax, and the service interface unit 801 interprets a request for inquiry or setting based on any service and a request for subscription to an arbitrary information item, The method to be performed by the request (in this method, the target state variable may be specified in advance, or information designating the target state variable may be added as a parameter), in a predefined manner By specifying and delivering to each, various protocol execution routines for communication provided by the service processing unit 802 configured to perform an operation to cause the method to be executed and the operating system (OS) or separately provided middleware are appropriately called, A message handler that is a message handler configured to send and receive messages according to a protocol such as SOME/IP (Scalable service-Oriented Middleware over IP) based on a predetermined protocol, for example, TCP/IP with other devices on the device 803 and, through execution routines for various interfaces provided by the operating system, obtain signals or information from a data frame transmitted from a dedicated peripheral of the device 80 or from other types of networks, or obtain specific values for them a local state handler 804, which is a state variable processing unit, configured to transmit a data frame carrying signals or information that sets the state of various kinds of parts, devices, etc. connected to the different kinds of networks; Based on the requirements table, as described above, the information providing method determining unit 805 is configured to create the information provision method setting table.

In addition, in the service agent 800, the current values monitored for the state variables in charge of the device 80, and the state of the event occurring when a specific state or condition is reached, the state variable for each service item is recorded. and/or a state database 810, which is an organized list in association with event items. The state database 810 may be queried by the service interface unit 801 , the service processing unit 802 , and the local state handler 804 , or at least some information may be updated.

In addition, when an event corresponding to an event item specified in the state database 810 occurs periodically or non-periodically, the local state handler 804 sets the state variable in the state database 810 if necessary. When the value is changed or the value of the corresponding event item is changed, the fact that the event has occurred is notified to the service processing unit 802 together with information on the corresponding event item.

Meanwhile, in an embodiment according to the present invention, the service interface unit 801, the service processing unit 802, the message handler 803, the local state handler 804, and the provision method constituting the service agent 800 are determined. The unit 805 may be an execution module that is individually executed on the basis of an operating system. Alternatively, the service agent 800 including these 801,802,803,804,805 may be implemented as a single execution module. In addition, a part of each of these functions may be performed through hardware. Accordingly, it should not be construed that the scope of the present invention does not extend because the service agent 800 is different from the exemplary description in this document in the form of its implementation or the type of resources used.

When the service agent 800 is started by applying power to the device 80 of FIG. 8 , the service processing unit 802 determines which service items can respond to the service-based request, that is, what By providing the message handler 803 with the contents of the unique profile that records whether service items are supported, all devices connected to the same network, that is, each service processing unit of the devices, can grasp the contents.

The message handler 803 configures the content delivered by the service processing unit 802 as one message or a plurality of messages, and forms a format according to a protocol required for transmission and reception on a connected network, for example, UDP or It is loaded in a TCP-type transport frame and transmitted over the network.

After the unique profile of each device is exchanged in this way, the service processing unit of all devices on the network identifies which service item (ie, method, state variable, and event item) is supported by which device, This identified information is saved as a separate 'external service status table'.

In an embodiment according to the present invention, while sharing the content of the unique profile between the devices as described above, the service processing unit 802 uses preset location information to access a specific device on the network or an external server. After requesting and receiving the download of a file corresponding to the provided information time requirement table, the received information time requirement table is transmitted to the provision method determining unit 805 and the determination of the provision method for each information item is commanded. In response to this command, the providing method determining unit 805 determines an information provision method for devices on a network system for each information item in the same manner as described above, and creates an information provision method setting table, It is provided to the service processing unit 802 .

Each information item on the information time requirement table configured in advance for service-based devices may correspond to several types of service-based messages. For example, it may correspond to a message that calls a method targeting an arbitrary state variable, a message in response to the call, a message to subscribe to an event item, a message to respond to the subscription, and the like. To these messages, an identifier distinguished by the type, the type of the method to be called, and the type of the service item to which the method belongs is assigned, and the assigned identifier may be the information identifier 20 as described above.

In another embodiment according to the present invention, information of a specified time requirement for an arbitrary information item may be received from other nodes operating in connection with a network. In this embodiment, the information time requirement table is provided in a form in which only the information items, the provided device identifiers, and values corresponding to the items of the default delay time are filled in, or initially received from another device or server, As the network system operates, when there is a request for information provision from another node, more specifically, an event subscription request, the service processing unit 802, from the information accompanying the subscription request, the requested device identifier, the requested time, and As illustrated in FIG. 2, by extracting the value of the delay tolerance time, adding the fields corresponding to the subscription-requested information item to the information time requirement table, and recording the extracted values in the added fields, respectively, The temporal requirements constitute an information timeline in which at least some information items are specified.

The provision device identifier on the information time requirement table may be filled after identifying the supported device of each information item through the exchange of a unique profile between the devices, as described above.

In the case of a device-internalized configuration, the time requirements for filling the information time requirement table may be different for each node. This is because an information provision request for an arbitrary information item designating a time requirement, that is, a subscription request, can be made only to a node supporting the arbitrary information item. In this case, the service agent of each node is provided with an information time requirement table in which only a default delay time is specified for information items for which there is no subscription request from other nodes.

In addition, the service processing unit 802, when receiving a request for provision of an information item from all other nodes on the network system, or at a predetermined period, provides the information at the current time to the provision method determining unit 805 Order the creation or update of the information provision method setting table based on the time requirement table.

Based on the given information time requirement table, the method for the provision method determining unit 805 to determine the information provision method to create the information provision method setting table is a method in which the information-based device 100 is independent from the network system. Since it is the same as the method performed by the provision method determining unit 111 of the apparatus in the case of a device, a description thereof will be omitted. However, unlike the information time requirement table given when it is an independent device, the information provision method is determined by targeting the information time requirement table in which time requirements are specified only for some of the information items processed in the entire network system The only difference is that you do it.

In one embodiment according to the present invention, with respect to the update of the previously prepared information provision method setting table, the information provision method may be reset only for the information item by individually specifying the information items listed on the information time requirement table. . For example, when receiving a request to provide information on an arbitrary information item from another node, the service processing unit 802 searches for an information item that is a target of the request from the information time requirement table at the current time, and finds the information item. If the requesting device is not registered in the information item, the identifier and time requirements of the requesting device accompanying the request are additionally registered for the information item, or even if registered, any of the registered request interval and delay tolerance If even one is different from the time requirement accompanying the request, after updating the value of the corresponding field to the requested value, the identifier of the found information item is transmitted to the provision method determining unit 805 and only for the corresponding information item You can order the reset of the information provision method. Accordingly, the operation of determining the information provision method of the provision method determining unit 805 is performed in the same manner as described above only for the designated information item, and information on the corresponding information item in the currently prepared information provision method setting table is performed. Only the delivery method is selectively changed.

The operation of individually resetting the information provision method only for specific information items in the currently created information provision method setting table will be described in detail later, but a new application program is installed and executed on another node or the execution environment is changed. It is advantageous for re-determining the appropriate information provision method only for the relevant information item by reflecting the change when there is a change in the required time requirement.

As described above, in the embodiment in which the values of the request device identifier, request time, and delay allowable time fields on the information time requirement table are determined when there is a request for information provision for an information item from another node, operation within each device A service agent that does this will request information provision along with a desired time requirement for an arbitrary information item. In addition, the information provision request for such a necessary information item is also different by the service processing unit 802, which causes the provision method determination unit 805 to create or update an information provision method setting table based on the information time requirement table. sent to the node. Hereinafter, an operation of the service processing unit 802 for requesting information provision to another node by determining a time requirement for a necessary information item will be described in detail.

When power is applied to the device 80 and application programs 10 _i , i=1,2,..) are executed in the device, as illustrated in FIG. 9 , each application program is implemented to itself Information items corresponding to information required to perform the specified operation, for example, a subscription request list (90 _i , i=1,2,..) listing event items are transmitted to the service agent 800 . . Each information item of the subscription request list delivered in this way includes an information identifier indicating the corresponding information, a request interval, and a delay allowable time. According to the embodiment, information designating the attribute may be added to the requested interval. The attribute of the request interval will be described later.

Instead of transmitting the subscription request list (90 _i , i=1,2,..) that each application program lists the items of information it needs, at the beginning of execution as described above, each application program When installed based on this operating system, the information items required by the corresponding application, that is, the information items required to provide information, and the required time and delay tolerance for each of those items are included in the subscription request list. It may be set, and the set subscription request list may be transmitted to the service agent 800 through an operating system, more specifically, to the service processing unit 802 .

When a subscription request list (90 _i , i=1,2,..) listing one or more information items with time requirements is received from each application through the service interface unit 801, the service processing unit ( In step 802, for each entry in the subscription request list, the same information identifier is retrieved from the status database 810, and the subscription-requested information item is for an item in charge of itself.

In this document, for a detailed explanation of the principles and technical ideas of the present invention, it is premised that time requirements are included when requesting subscription to information items required by application programs, but in actual operation of the network system, the service A time requirement may not be involved in the subscription request to the agent 800 .

The service processing unit 802 extracts only information items that cannot be found in the state database 810 in the search, and creates a list of subscription requests for other nodes for the corresponding application program. At this time, an identifier (pXA, pXB, ..), for example, a process ID, is added to the list of other nodes to subscribe to the information item on the list to distinguish the requested application program.

In this way, when the other node subscription list is written for the subscription request list from each application, the service processing unit 802, for the information items listed in each other node subscription list, each application program By dividing this designated time requirement by type, that is, by separating and sorting by requested interval and delay allowable time, as illustrated in the figure, the required interval specification table 901 and the delay allowable time specification table 902 are prepared respectively. (p91).

At the same time, based on the list of subscription requests from each application, by linking and recording the identifier of the application that requires the corresponding information item per information item, the list of requested applications by information (hereinafter, 'app requesting by information') abbreviated as 'list'). When linking the identifier of the application to any information item in the request app list for each information, in the specification tables 901 and 902, the order of the request interval/delay allowable time recorded for the same information item and the time requirement By recording the order of the specified application programs to be consistent with each other, it is possible to link the temporal requirement and the specified application program with each other.

After creating the specification tables 901 and 902 and the requested application list for each information, the service processing unit 802 collects and records one or more time requirements (request interval, delay allowable time) for the information items listed in each specification table. By determining a time value represented by , and recording it as a time requirement for the same information item, the information request specification table 910 is written (p92). If there is only one aggregated time requirement (request interval or delay tolerance) for any information item, that is, if subscription is requested for the information item from only one application, of course, that one time is represented determined by the time value. A method of determining a representative time value for two or more cases will be described later.

After the information request specification table 910 is written as above, the service processing unit 802, as the information 921 of each information item of the information request specification table 910, a subscription request message 920 for requesting information ) constitutes And, when composing one subscription request message 920, a device identifier 922 that identifies the device 80 in which it is running is included in the message. If the network address assigned to the device is used as the device identifier, the device identifier 922 may not be included in the message.

Immediately or immediately before the construction of the subscription request message 920, the service processing unit 802, for the information item 921 included or to be included in the message, the information item from the previously stored external service status table. Find it and check which node supports it. When the support node is confirmed, the node is designated as a destination in the message handler 803, and the configured subscription request message 920 is transmitted and transmission to the network is requested (p93). The destination designation, delivery, and transmission request of a message can be made through a transmission queue. This will be described in detail later.

If a plurality of information items recorded in the prepared information request specification table 910 are supported by the same node, the service processing unit 802 may load them all in one subscription request message and request transmission to the network.

On the other hand, for a subscription request from an application program for an information item not accompanied by a time requirement, a subscription request message not including a time requirement is transmitted to a node supporting the corresponding information item.

According to this method, when a subscription request message configured by the service processing unit of each node and transmitted to the device 80 as a destination is received through the message handler 803, the service processing unit 802 is, By extracting information from the subscription request message, the requested device and time requirements are added to the relevant information items of the information time requirements table. For a subscription request message without a time requirement, only the identifier of the requesting device may be added to the relevant information item.

Then, after the request for information items is reflected in the information time requirement table, the service processing unit 802 constructs a response message indicating the success of the subscription to the subscription request and transmits it to the node that transmitted the subscription request.

In an embodiment according to the present invention, the supportable lower limit interval and the allowable lower limit delay time for each information item may be previously specified in the information time requirement table provided in advance. In this embodiment, the service processing unit 802 sets the time requirements included in the subscription request message received through the message handler 803, that is, the request interval and the delay allowable time, the corresponding information on the information time requirement table. The lower allowable interval and the lower allowable delay time recorded for the item are compared, and if either of them is shorter than the allowable lower limit, a response message indicating correct subscription is composed and transmitted to the node that sent the subscription request. And, when a time requirement is added together with the requesting device to the corresponding information item on the information time requirement table, it is recorded as the longer of the time requirement specified in the subscription request and the allowable lower limit time.

The response message indicating the modification subscription includes information notifying that the request interval and delay allowable time have been modified to a longer allowable lower limit interval or lower allowable delay time than those times.

When the service processing unit in the service agent that made a subscription request by designating a time requirement for an arbitrary information item receives a response message indicating correct subscription instead of a message of successful subscription, the time requirement indicated by the response message, that is, the lower limit interval Alternatively, the allowable lower limit delay time is determined for the corresponding information item on the information request directional table 910 and the representative corresponding time value recorded is changed.

The service processing unit 802 reads the current value of the corresponding information item at each request interval from the status database 810 for the information item in which the requested interval is recorded in the information time requirement table, and based on the read value organize the information with That is, information on the information item is generated at every request interval specified for the information item. And, the generated information is transmitted to devices that have requested information provision for the corresponding information item. The operation of transmitting such occurrence information to the device requesting the provision will be described in detail later.

On the other hand, if there is an information item in which only the requested device identifier is recorded without a time requirement in the information time requirement table, for that information item, the occurrence of an event corresponding to the same information item is notified from the local state handler 804 When done, information is configured as the current value for the event item, and the information item is provided to the node requesting subscription.

Hereinafter, the service processing unit 802 represents, in order to create the information request specification table 910, when a plurality of request intervals or delay tolerance times are specified in one information item from application programs. A method of determining the time value will be described in detail.

First, in the case of allowable delay time, a time value representing the shortest time among them (hereinafter referred to as 'representative allowable time') is determined. And, even in the case of the requested interval, it can be determined as a time value representing the shortest time among them (hereinafter, referred to as a 'representative interval').

If, as mentioned above, attribution information is appended to the request interval, the attribution information is provided within the specified interval at the latest for the requested interval, or the information within the specified interval at the latest. If it is not specified to generate , but it is specified to be provided when the specified interval has elapsed, that is, to be provided in accordance with the specified interval (in this case, the required interval is called 'request positive interval') ), the service processing unit 802 determines the time of their greatest common divisor as a representative interval for request intervals including such a request regular interval. For example, if the request intervals are 20, 30, and 50 msec, respectively, of which at least 30 msec is the required regular interval, the service processing unit 802 determines 10 msec, which is their greatest common divisor, as the representative interval.

If the required regular interval is included in the requested intervals, but the number is one and the requested regular interval is the shortest time, the service processing unit 802 does not find the greatest common divisor of the requested intervals, but uses the requested regular interval as the representative interval to decide

If the representative interval is determined by the time of the greatest common divisor for the requested intervals including the required regular interval, for the information item, one item 1010 in the notification time adjustment table 1000 configured as illustrated in FIG. 10 . (hereinafter referred to as 'notification adjustment necessary items.'), and record compensation information at the time of notification in the notification adjustment necessary items. This notification time compensation information may be composed of an identifier (pX*) and time compensation information (IT_cInfo _NX* ) of an application program that has designated the required regular interval. At this time, the time compensation information may be recorded as a ratio, that is, a multiple of the required regular interval to the determined representative interval. This is, after a subscription request for the corresponding information item is made, whenever information of the corresponding information item is provided at every representative interval from the device supporting the information item, the service processing unit 802 counts the number of times, When the counted value is a multiple of the time compensation information recorded for the relevant notification adjustment required item, the provided information at that time can be notified to the corresponding application program through the service interface unit 801 am.

In the notification time adjustment table 1000, when a notification adjustment required item for a required regular interval is listed, if there is a requested interval designated as a notification interval instead of a requested regular interval for the same information item, the required regular interval is also for the requested interval In the same way, the items required for notification adjustment can be listed. This is because the representative interval included in the subscription request for the corresponding information item is shorter than the request interval specified by the application program. This makes it possible to prevent wastage of resources. The registration of the notification adjustment required item for the request interval designated as the notification interval is, of course, applicable to other representative interval determination methods described below. For the required interval designated as the required interval, it is not necessary to register the notification adjustment required item for compensation at the time of notification, and this is also the same in the method described below.

In an embodiment according to the present invention, when the required intervals including the required regular intervals are checked, when their greatest common divisors are too short compared to the shortest required intervals, their greatest common divisors may not be determined as the representative intervals. For example, if the requested interval is 15 msec and 32 msec, among which 32 msec is the required regular interval, the maximum common divisor is 1 msec. If this maximum common divisor is set as a representative interval, information is provided from a device supporting the corresponding information item at an interval 15 times shorter than 15 msec. This is to use resources excessively to provide information at a necessary time.

Therefore, in this embodiment, as illustrated in FIG. 11 , the shortest required interval (or required regular interval) for the time 1101 of the greatest common divisor obtained from the required intervals (req_IT _NXP , req_IT _NXQ ,..) The ratio is compared with a predetermined reference multiple ( MT _TH , for example 5 times ) ( S1110 ), and if it is greater than or equal to the reference multiple (MT _TH ), the shortest required interval (req_IT _NXP ) in the request intervals is used as a representative interval , and when it is registered as one information item 1120 in the information request specification table 910 , it is recorded in the corresponding field 1121 . Of course, when the ratio of the shortest requested interval to the time of the greatest common divisor obtained from the requested intervals is less than the reference multiple, as described above, the time 1101 of the greatest common divisor is recorded in the corresponding field 1121 as the representative interval. will do

According to the embodiment illustrated in FIG. 11, when the shortest request time in the request intervals is determined as the representative interval, another request interval specified for the same information item, in particular, another request interval (hereinafter referred to as 'non-representative request information interval'. ) is very likely not to be an integer multiple of the representative interval. That is, when the information of the corresponding information item is provided at each representative interval from the node supporting the corresponding information item, a time point corresponding to a multiple of the number of times provided is the non-representative request specified by the application program for the information. It is unlikely to match the interval.

Accordingly, when a subscription request is requested for a corresponding information item by designating the shortest request interval as a representative interval for request intervals that do not have a maximum common divisor other than 1, the service processing unit 802, as illustrated in FIG. When the notification adjustment required item 1200 is listed on the notification time adjustment table 1000 for at least the non-representative required regular interval (req_IT _NXQ ) among the request intervals, for the notification time compensation information, the specified required regular interval ( or a specified request interval ), a representative interval, and a remaining time field 1210, and a corresponding time is written in the fields 1210, respectively. In this case, for the remaining time field, a subscription request message for the corresponding information item is transmitted to another node and, at the same time, it is initialized at a designated regular interval.

In Fig. 12, based on the notification time compensation information composed of these fields 1210, the required regular interval (of course, it can be applied even in the case of the required interval, as mentioned in the above-described embodiment). A method of notifying information to the program at the required regular interval is diagrammed. A process of notifying according to the required regular interval will be described in more detail with reference to the illustrated drawings.

By the representative interval included in the subscription request and transmitted, information generated or generated for the corresponding information item is provided at each representative interval (req_IT _NXP ) from the node supporting the corresponding information item (nt _i , i=1, 2,3,..). And, each time, a message of the information is received through the message handler 803, and the service processing unit 802 for the information of the message, the information item corresponding to the requesting app list for each information as described above. It finds and identifies the applications that have requested to join the found information item.

When the application programs that have requested subscription for the information item corresponding to the information of the message are identified in this way, the service processing unit 802 notifies the same information item in the notification time adjustment table 1000 in the identified application programs. Except for the application programs listed as the items to be adjusted, the information included in the message is immediately notified through the service interface unit 801 . That is, in the example of FIG. 12 , for the application program with the identifier pXP (the application designating the request interval determined by the representative interval), whenever information generated for the corresponding information item is provided from another node (nt _i , i = 1,2,3,..), immediately notify the application of the received information.

And, in the notification time adjustment table 1000, if there is an information item corresponding to the information of the received message in the notification adjustment required items configured and registered as illustrated in FIG. 12, the notification adjustment required item 1200 For , the remaining time field is updated by subtracting the time of the representative interval req_IT _NXP from the current remaining time, and it is checked whether the subtracted time is shorter than the representative interval req_IT _NXP . If the subtracted time is longer than the representative interval, it waits for the next information to be provided for the corresponding information item while performing another operation.

If the subtracted time is shorter than the representative interval (req_IT _NXP ) (nt ₂ , nt ₄ , nt ₇ ,..), the service processing unit 802, in the received information, the current remaining time (lrT _i , i =1,2,3,..) allocates a timer, and along with this, an application program identifier to be notified is added. Afterwards, when the timer times out (t _TOi , i=1,2,3,...), the service processing unit 802 transmits the information to which the timer has been allocated to the service interface unit 801 . Through this, the application program corresponding to the added identifier is notified.

At the same time, for the value of the remaining time field of the notification adjustment required item 1200, the currently recorded time (lrT _i , i=1,2,3,..) is set at the specified request interval (req_IT _NXQ ) It is initialized with the time obtained by adding (p120 _i , i=1,2,3,..).

In the notification time adjustment table 1000, for the application programs in which the notification adjustment required items configured as illustrated in FIG. 12 are listed, the information provided at each representative interval is designated by the application according to the method as described above. The information is notified exactly at the required regular interval.

When the request intervals including the required regular intervals do not have the greatest common divisor other than 1, when the shortest requested interval among the requested intervals is designated as the representative interval, as specifically described with reference to FIG. Although it is possible to notify the information exactly at the required interval specified by the application program, the actual information to be notified is the information at a point in time prior to the notification time. In the example of FIG. 12 , the information received by the application requesting notification of the corresponding information is a time point ahead of the time at which it receives the information by the remaining time lrT _i (i=1,2,3,..) (This difference in time is called a 'temporal gap').

And, since the representative interval is not determined by the time of the greatest common divisor of the required intervals, the temporal gap is inevitably changed, and the temporal gap may have a considerably long time depending on the specified required intervals. This temporal gap NDT_GP can be obtained by the following equation [1] when the given request interval is req_IT ₁ and reqIT ₂ . For example, if the required interval is 35 msec and 50 msec, the maximum temporal gap is 30 msec. If 35msec and 42msec are used, the maximum is 28msec.

식 [1]

Equation [1]

In Equation [1], N is a natural number, Mod(a,b) is a function representing the remainder when a is divided by b, and Min(a,b) is a function representing the smaller of a and b. .

The time gap NDT_GP is, from the point of view of the application program, the notified information corresponds to information generated before at least that time. For the time gap, it may be necessary to manage the maximum NDT_GP _MAX within an appropriate range .

Therefore, in one embodiment according to the present invention, the maximum temporal gap NDT_GP _MAX obtained for the specified request intervals for any information item is greater than the predetermined allowable gap (eg, 20, 30 msec, etc.), the request For the intervals, the predetermined allowable gap is designated as a representative interval. And, for all of the required intervals, particularly the required regular intervals, the notification adjustment required items configured as illustrated in FIG. 12 are registered in the notification adjustment timetable 1000 .

For each information item of the subscription request list (90 _i , i=1,2,..) received from the applications described so far, the representative allowable time and representative interval are determined based on the time requirements specified in the corresponding item. In the determining method, the temporal requirements for requesting excessive information on the corresponding information item may be determined due to the conflicting characteristics of the request interval. For example, if application XA specifies the request interval and allowable delay time as 50 msec and 2 msec for an arbitrary information item, respectively, and application XB specifies 4 msec and 800 msec for the same information item, respectively, the service processing unit In step 802, the representative interval is 4 msec and the representative allowed time is 2 msec, according to the above-described method of determining the representative interval and the representative allowed time, and a subscription request is made for the corresponding information item. In other words, although the very frequent request interval of 4 msec is a necessary interval for designating information generation, the characteristic of the required time requirement is determined as the notification interval by determining the representative allowable time in consideration of other temporal requirements specifying the notification interval. will change

The intention of application XB is to generate the corresponding information every 4 msec, collect 200 pieces and receive them at once (the necessary interval is specified), but the actual result is that the information is generated every 4 msec and provided almost immediately. (According to the characteristic change at the notification interval) will cause an action.

Accordingly, in an embodiment according to the present invention, in order to prevent an unintentional excessive load on a network or a related device by changing the characteristic of the temporal requirement by the determination of the representative interval/representative allowable time, The service processing unit 802, when determining the representative interval / representative allowed time, check the time requirements of the information items listed in the subscription request list (90 _i , i=1,2,..) received from the applications Thus, the items specifying the notification interval and the items specifying the required interval are separated from each other, and for the list of information items separated in this way, as described above, the representative interval and representative allowable time for each information item will decide

And, when requesting to join a node supporting the corresponding information item for any one information item, as illustrated in FIG. 13 , a message 1300 including a field block for a notification interval and a field block for a necessary interval, respectively ) is configured and transmitted.

The service processing unit 802 determines a representative interval and a representative allowable time at each interval when there is both a notification interval and a required interval for any one information item requested to subscribe from the application programs, and the corresponding field Blocks are filled (1310), and when there are only required intervals of a single characteristic, the determined representative interval and representative allowable time are filled only in the field block of that characteristic (1320, 1330), and the field blocks of other characteristics are transmitted while leaving blank. do. Of course, instead of defining a field block for each characteristic of the request interval, information indicating which characteristic temporal requirement is included in the subscription request message may be defined and used for the subscription request message.

As in the above-described embodiment, when requesting information provision by classifying time requirements for arbitrary information items by characteristics, the service processing unit 802 performs the information provision method according to the method described in detail above. After completing the configuration of the setting table 700, a memory space reserved for transmitting information generated by the device to other nodes, for example, a first-in-first-out (FIFO) transmission queue ( For each of the queues), a transmission queue for information generated according to the required interval is separately secured. Hereinafter, the former is referred to as a 'commercial queue' and the latter as a 'special queue'.

In the case of a commercial queue, the service processing unit 802 stacks up to transmit information generated by the device (or execution module of the device) or information generated for the information item requested for subscription as a notification interval from another node. used for placing. A commercial queue is secured per node on the network system and per combination of nodes being multicast. More specifically, the service processing unit 802 searches the information providing method setting table 700, which has been configured as described above, and selects information items set as supported by itself.

When the information items are selected in this way, the combination of target devices of the items whose provision method is designated as multicast for the selected information items is checked, and whether there is a common combination is checked. If there is a common combination, one commercial queue is secured for the common combination, and each commercial queue is secured for different combinations. In each of the commercial queues secured for multicast in this way, a corresponding information item and a multicast address are linked and recorded. In addition, one commercial queue is secured for all other nodes of the network system, and information identifying a transmission target device, for example, an assigned network address of the device, is linked and recorded in each of the commercial queues.

Then, for each of the commercial queues secured in this way, a special queue paired therewith is secured. Of course, the information linked and recorded in this special queue is the same as for the commercial queues that are paired with each other.

The service processing unit 802 selects, from among the plurality of commercial queues secured in this way, the commercial queue secured for the node to which the corresponding information is to be transmitted, or, when the corresponding information item is designated in a multicast method, multicast of the information item. A commercial queue secured for cast notification is selected and the corresponding information is accumulated. And, when accumulating information in the selected commercial queue, the timer of the allowable delay time or the default delay time specified for the corresponding information item is allocated to the commercial queue in the provided information time requirement table 200 and driven make it

If there is information accumulated before the commercial queue and the timer is in progress, check whether the delay tolerance (or default delay time) specified for the currently accumulated information is shorter than the remaining time of the timer, and if it is shorter, the timer Update the time of , to that delay tolerance, otherwise let the timer proceed to its current value.

And, when the timer allocated and driven for the commercial queue times out, at that point the service processing unit 802 transmits all information accumulated in the commercial queue so far to the address of the node set to transmit the commercial queue. together with the message handler 803, by sequentially fetching and transmitting the message to the corresponding node at once.

The operation of storing and retrieving information for the aforementioned special queue is basically the same as for the commercial queue. However, by securing a special queue and accumulating only the information specified at the required interval, it occurs at each required interval It is possible to prevent the requested information from being frequently transmitted along with the information unnecessarily by accumulating other information for which a short delay tolerance is specified. Based on the specific numerical values given above, for the same node, the information generated at that point every 50 msec is accumulated in the commercial queue while a timer of 2 msec time is allocated, and every 4 msec, the information generated at that point in time is accumulated in the corresponding special queue. Whenever information is accumulated in the special queue, the delay allowable time of 800 msec (time designated as the representative allowable time at the time of the pressurization request) is always greater than the remaining time of the current timer, so the timer continues and 200 pieces of information are stored. Only after accumulating, the information is retrieved at once and transmitted at once to the node that requested the press for the information item. This shows the fraction of the benefit obtained by separating the temporal requirements of the required interval and the notification interval from each other to request a subscription and thus also separate the transmission queue to process information transmission.

On the other hand, as described above, the service processing unit 802 constructs the request interval and delay allowable time specification tables 901 and 902 for the information items requested for subscription from the application programs executed in the device, and the time After being used to determine the time values representing the requirements, the specification tables 901 and 902 are preserved as they are, and when there is a new subscription request from applications or new application programs installed information, the time requirements It is used to check whether or not to re-determine the time value representing the matter.

More specifically, if there is a subscription request for an information item from any application program, or if it is confirmed that there is an information item requiring information provision by a newly installed application program, the service processing unit 802, First, the information item is found in each specification table 901 and 902.

If the same information item is listed in each specification table (901, 902), and the same time value as the required interval and delay allowable time requested by a new subscription request or new installation information is recorded for the registered information item , the service processing unit 802, when the new subscription request or new installation information does not correspond to the combination of the information item and the application identifier already recorded in the request app list for each information, the information request app list The new combination is reflected in , and the re-determination of the representative interval/representative time is not performed.

Otherwise, if a new application requests a subscription by specifying a time value that is not the same as the time requirement recorded for the arbitrary information item of each personal information table 901 as a time requirement, the existing or new application program has previously requested a subscription When a subscription is requested by specifying a time requirement for a new information item that has not been registered, or when an existing application requests a subscription by changing the time requirement for the previously requested information item, the service processing unit 802 is The requirements are reflected in each specification table (901, 902). That is, it is registered as a new information item in each specification table (901, 902) and the specified request interval and delay allowable time are recorded for the new information item, or a new request interval and delay allowable time are additionally recorded for the information item of the same information identifier, or , or for the information item of the same information identifier, the requested interval or delay allowable time recorded for the same application program is changed to a new time value. In addition, in the first and second cases, the corresponding subscription request is also reflected in the list of requested apps by information.

As above, if there is a change (change of an existing time value or addition of a new time value) in the requested interval or delay allowable time recorded in the request interval specification table 901 and the delay allowable time specification table 902, the service The processing unit 802 re-performs the above-described method only for the corresponding information item of each specification table 901 and 902, and determines again the representative interval and the representative allowable time for the set of time values of the information item. If a new information item is added, the time requirement recorded in the information item is determined as a representative time value as it is. Of course, for a new information item, if two or more temporal requirements are recorded at the same time, of course, a representative time value is determined as described above for two or more request intervals and two or more delay tolerance times.

In this way, when an existing time requirement is changed or a new time requirement is generated, the service processing unit 802 constructs a subscription request message for the corresponding information item as described above, and the message handler 803 Through , it is transmitted to a device that supports the corresponding information item. If this transmission operation is described based on the above-mentioned commercial queue, the message is accumulated in the commercial queue secured for the device supporting the corresponding information item. At this time, after finding the item of the information identifier given to the subscription request message in the information time requirement table 200, the default delay time specified for the found item is set in the timer currently in progress for the commercial queue, or , or leave its current value in progress. After that, when the corresponding timer times out, the subscription request message accumulated in the corresponding commercial queue is fetched and transmitted along with the address of the node set for the commercial queue, and transmission is requested to the message handler 803 .

In the above description, when accumulating information in a commercial queue (or special queue), the service processing unit 802 performed an operation of retrieving information for the corresponding queue, but the service agent 800 The message handler 803 may be configured to handle an event when the timer times out. That is, when the timer allocated to any one commercial queue (or special queue) times out, the message handler 803 fetches the information accumulated so far from the corresponding queue, and the address (or multicast address) set for the queue is set. ) can also be transmitted over the network.

On the other hand, when the operation according to the change of the time requirement as described above is also performed in other nodes of the network system, and a subscription request for an information item in charge of processing by the device 80 is received by the service agent 800, This subscription request is finally transmitted to the service processing unit 802, and the service processing unit 802 extracts necessary information from the subscription request, that is, a device identifier, an information identifier, and a time requirement, and creates the current First, it is checked whether the extracted information should be reflected in the information time requirement table, and if it is necessary, as described above, after reflecting the information of the received subscription request in the information time requirement table, the reflected information The item is instructed to the provision method determining unit 805 to reset the provision method for the corresponding information item in the information provision method setting table.

In response to this command, when the provision method determining unit 805 notifies the completion of resetting the provision method, the service processing unit 802 selects the information provision method set for the corresponding information item in the updated information provision method setting table. If it is necessary to change the currently secured commercial queue (including a special queue depending on the embodiment), secure a new transmission queue and associate the information item with the multicast address, or , it is possible to change the multicast address associated with the existing transmission queue.

Up to now, with respect to the information items required by other nodes, the service agent 800 determines a method of providing information suitable for specified time requirements and applying it to the provision of information. explained.

In other embodiments according to the present invention, a method for providing information may be determined and applied according to the data processing capability of nodes exchanging information, not a time factor, or a load degree of a network, and the like. The data processing capability in this embodiment is the amount of data that can be processed (received or transmitted) per second, the frequency of messages that can be processed per second, data selection capability, individual performance of hardware resources (CPU, DMA, communication device, etc.) available capacity (hereinafter referred to as 'processing capacity factor'). In addition, the information providing method here includes a method of selectively sending or collecting information for arbitrary information in addition to the transmission method of unicast and multicast. The former is called the 'selection and provision method', and the latter is called the 'collection and provision method'. That is, in the present embodiments, according to the data processing capability of the transmitting or receiving node, for arbitrary information, it can be determined to transmit the information by multicast to the target nodes that will receive the information, as well as the corresponding information. It may be determined as a selective delivery method or as an aggregate delivery method.

The service processing unit 802, for the information of the processing capability element, uses information that is identified and set in advance, or for some elements, in real time from the operating system or platform of the corresponding device, which is its execution base. can figure out Also, for its own load state, for example, the message handler 803 can receive from the network and cannot process it in a reception queue that is accumulated, and can be grasped from the amount of information currently accumulated.

The current load level of the network can also be identified through a load check message that the service agent of each node transmits once at a certain period. For example, if a service agent sending a message for load check writes the sending time in the message and sends it to the network with an identifier indicating that it is a test, service agents of other nodes receiving this message receive the message and Based on the time difference between the time and the sending time, it is possible to measure the load level of the current network.

In one embodiment according to the present invention, it may be designated as a specific numerical value for the aforementioned processing capability factor and the degree of load of the network, or may be designated as one of several grouped level values. The same is true for the degree of network load. Even when a specific value is specified, the level value mapped to the section is determined according to which section the specific value belongs to in the sections divided into several sections for the range that the factor or load degree can have and can be used

On the other hand, between the service processing units of the service agent of each node, a message is configured according to a specified protocol so that the level values for each of their processing capability elements can be exchanged with each other, and a predetermined provision rule (eg, a predetermined By exchanging each other according to the multicast transmission ) of each cycle, the current level values of the processing capability factors of other nodes are grasped.

The service processing unit 802, which recognizes the current level values for the processing capability factors of other nodes as well as the own device, and the level values for the network load, determines whether the processing capability factors of any one node have the processing capability. If inferiority is indicated, for example, for each processing power factor, if the weighted average of the level value using the weight assigned to each factor is lower than the predetermined inferiority criterion, the information to be provided to the node is selected switch to the delivery method. The selective provision method here refers to a transmission queue secured for the node by generating the information of the corresponding information item at an extended interval longer than the required interval specified for the information items to be provided to the node, more specifically, a special It can mean accumulating in a queue. That is, information on the information item requested by the receiving node is provided in a direction to reduce the load accompanying information reception and classification of the received information at the receiving node.

Instead of periodically generating the information of the corresponding information item at an extended interval longer than the specified necessary interval, the information may be selected by generating the corresponding information only when the receiving node is likely to need it. For example, in information generated periodically at extended intervals, only when the difference from previously generated information is greater than or equal to a predetermined reference ratio When a timer of the designated representative allowed time for the assigned information item times out, the selected information may be provided to the receiving node.

If it indicates that the currently recognized level value of the network load exceeds the appropriate standard, in order to minimize the load on the network, the service processing unit 802 adjusts the extended interval to a longer interval. Alternatively, by adjusting the reference ratio to a larger value, the amount of information selected for the corresponding information item may be reduced.

In addition, if the network load exceeds the appropriate standard, or the level values of the processing capability elements of the device 80 or the service agent 800 indicate a state in which the transmission capability to the network is lowered below the set standard , the service processing unit 802 may collect information to be transmitted for two or more nodes and transmit it as one message. That is, when it is time to transmit one of the transmission queues secured in response to two or more nodes, all information accumulated in the other transmission queues may also be retrieved, configured as one message, and transmitted to the network. Of course, in this case, the multicast address assigned to the group of target nodes for collecting and transmitting the information is written and transmitted as the destination address of the message constructed by collecting information. When the message is collected and transmitted, only the information needed by the target nodes receiving the message is selected and taken.

In one embodiment according to the present invention, the level values of the processing capability factors of the device 80 or the service agent 800 are in a state in which the ability to select data is lowered to below a set criterion (eg, CPU usage occupancy is high ), and if the network bandwidth is in a state with room to spare, the service processing unit 802 may not perform a selection operation on information. That is, the information generated by the device may not be selected, but as it is generated, it may be stored in the transmission queue for transmission to the requesting node.

Alternatively, in the same state, the information selection operation may not be performed when special conditions are imposed on selection or provision of information, and processing power must be allocated to checking whether such conditions are satisfied. The special condition here means, for example, that information is selected so as to be a specified first ratio in the corresponding information that is periodically or aperiodically generated, and information satisfying a predetermined criterion in the selected information is greater than or equal to a second ratio specified in the selected information It may be something that requires a non-simple comparison/arithmetic operation, such as sending when And, this special condition is that, when a service agent running in a certain node requests a subscription to another node supporting the information item for an arbitrary information item, the request is received by specifying and transmitting it together with a time requirement. The service agent of the corresponding node will know in advance the information of the special condition for the corresponding information.

Various embodiments of a method and apparatus for determining a method of providing information to a plurality of devices according to the present invention according to a time requirement for the information, which have been specifically described so far, and the configuration described in the embodiments And, unless incompatible with each other, the action and the like can be selectively combined in various ways with each other.

Above, the above-described embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art will improve and change other various embodiments within the spirit and scope of the present invention disclosed in the appended claims below. , substitution or addition may be possible.

10 _i : application 80: device
100: information-based device 110: main processing unit
111: providing method determining unit 112: device interface unit
113: storage unit 114: display unit
115: user input 800: service agent
801: service interface unit 802: service processing unit
803: message handler 804: local state handler
805: provision method determining unit 810: state database

Claims (33)

An apparatus capable of determining a method of providing information between a plurality of devices connected to a network, the apparatus comprising:
For each of the information items that the plurality of devices separately designate at least a part of the information required for the intended function, a time requirement including a request interval for the information item and a request device specifying the time requirement a processing unit configured to have a specific list recorded together with;
For each of the at least some information items on the specific list, based on one or more temporal requirements specified for the information item, to one or more devices requesting provision of the corresponding information item for the information of the corresponding information item. determining the information provision method of the one or more devices as a first method of providing a single message to all of the one or more devices, or using a second method of individually providing each message to the one or more devices A device configured including a determining unit configured to determine. The method of claim 1,
The determining unit classifies the request interval of the one or more temporal requirements according to which time period it belongs to in two or more time periods separated from each other, and for a classification to which a predetermined number or more of the request intervals belong, the request belonging to the classification and determine in the first manner a manner of providing information of the corresponding information item for two or more requesting devices specifying intervals. 3. The method of claim 2,
wherein the two or more time intervals are bounded by a time length of the shortest request interval belonging to each time interval. 3. The method of claim 2,
The determining unit may include: a second or more requesting device, which is determined in the first manner with respect to a manner of providing information, a second request that satisfies a given condition in delay tolerances respectively included in the time requirements specified for the corresponding information item If there is 1 delay allowable time, it is configured to re-determine the information provision method for the two or more requesting devices,
Each of the allowable delay times is a maximum allowable time from generation of information on the corresponding information item to provision of the information. 5. The method of claim 4,
The given condition is that the time difference between the first allowable delay time and another delay allowable time specified by one or more of the two or more requesting devices is that any device that has designated the first allowable delay time receives the information item A device in which the number of cases greater than the specified request intervals for all information items requesting information to the supporting device must be greater than or equal to a predetermined number. 5. The method of claim 4,
The given condition is that the first allowable delay time must be longer than a request interval specified as a time requirement by any device that has designated the first delay allowable time. 5. The method of claim 4,
The determining unit may include, in re-determining the information provision method for the two or more requesting devices, if there is one or more arbitrary devices that have designated the first delay tolerance among the two or more requesting devices, the two or more requesting devices The device is configured to designate an information providing method again as the first method or change to the second method for devices other than the one or more arbitrary devices in the list. The method of claim 1,
The time requirement is configured to further include a delay tolerance specifying a maximum time allowed to take from the generation of the information to the provision thereof,
The determining unit is, in the one or more temporal requirements specified for the corresponding information item, based on a time difference between the delay tolerance times specified by the requesting devices for two or more requesting devices for which a delay tolerance time is longer than a request interval to determine how to provide information of the corresponding information item. 9. The method of claim 8,
If the time difference between the delay tolerance time specified by the first requesting device and the second requesting device selected from among the two or more requesting devices is not greater than or equal to a predetermined multiple of the request interval specified by the second requesting device, and determine, in the first manner, a manner of providing information of the corresponding information item for the first requesting device and the second requesting device;
and the allowable delay time specified by the second requesting device is longer than the allowable delay time specified by the first requesting device. The method of claim 1,
The processing unit is configured to receive and provide the specific list through a device interface or communication module provided in the device. The method of claim 1,
The device is implemented by being included as an internal component in any one of the plurality of devices. 12. The method of claim 11,
The processing unit extracts the time requirement and the information on the requesting device from the information provision request received when at least some of the plurality of devices transmit to the network, and extracts the extracted information according to the information provision request. and to have the specified list by recording in the specified list for a specified item of information. 13. The method of claim 12,
The processing unit, when the temporal requirement included in the extracted information indicates a time shorter than the allowable lower limit time specified for the specified information item, configures a response message indicating that it has been modified and designated as the allowable lower limit time to request the information provision the device further configured to transmit to the originating device of 12. The method of claim 11,
The processing unit, with respect to an information provision request for any information item for which a temporal requirement is specified, received from each of a plurality of execution modules executed in the one device, a representative of the temporal requirements included in the requests and determine a time value, and transmit to the network an information provision request for the arbitrary information item including the determined representative time value. 15. The method of claim 14,
The time requirement is configured to further include a delay tolerance specifying a maximum time allowed to take from the generation of the information to the provision thereof,
and the processing unit is configured to determine, as the representative time value, a representative interval and a representative allowable time for the request interval and the delay allowable time, respectively. 16. The method of claim 15,
The processing unit is configured to determine, as the representative interval, a request interval of the shortest time for a plurality of request intervals designated from each of the plurality of execution modules. 17. The method according to claim 15 or 16,
The processing unit is configured to provide, if the request interval of a specific attribute is included in the plurality of request intervals and the request interval of the specific attribute is different from the determined representative interval time length, provided from another device on the network at each representative interval Further configured to record notification time compensation information for notifying any one of the plurality of execution modules designating the request interval of the specific attribute according to a time point corresponding to the request interval of the specific attribute,
The specific attribute is an attribute indicating that information should be provided according to a specified request interval. 18. The method of claim 17,
The processing unit obtains a maximum temporal gap that may occur between a time point when the arbitrary information is provided from the other device at each representative interval and a time point corresponding to the request interval of the specific attribute, and the maximum time gap is and if greater than a designated tolerance gap, further configured to re-determine the tolerance gap as a representative interval for the plurality of requested intervals. 16. The method of claim 15,
and the processing unit is configured to, for a plurality of requested intervals designated from each of the plurality of execution modules, determine, as the representative interval, a time to be their greatest common divisor. 20. The method of claim 19,
The processing unit, when the number of times that arbitrary information is provided for each representative interval from another device on the network becomes a multiple of a ratio of any one request interval among the plurality of request intervals to the representative interval, and notify any one of the provided information to any one of the plurality of execution modules designating a request interval of , as a temporal requirement. 16. The method of claim 15,
The processing unit classifies by characteristics for a plurality of temporal requirements specified in the information provision request for the arbitrary information item from each of the plurality of execution modules, and sets the representative interval and the representative allowable time to each of the temporal requirements Further configured to determine a classification, and to transmit an information provision request for the arbitrary information item including the determined representative interval and representative allowed time for each classification to the network,
The apparatus is characterized in that the characteristic is divided into a first characteristic in which the allowable delay time in the temporal requirement is equal to or less than a required interval, and a second characteristic in which the allowable delay in the temporal requirement is longer than the required interval. 22. The method of claim 21,
The processing unit is configured to provide a first information provision request in which the temporal requirement of the first characteristic for one information item is specified and second information in which the temporal requirement of the second characteristic is specified for one information item, received from an arbitrary device through the network In response to a request, a memory space reserved for transmitting information corresponding to the one information item to the one device is divided into one for providing according to the first characteristic and one for providing according to the second characteristic a device configured to do so. 16. The method of claim 15,
The processing unit is configured to determine, as the representative allowable time, a delay allowable time of the shortest time for a plurality of allowable delay times designated from each of the plurality of execution modules. 15. The method of claim 14,
The processing unit, when receiving an information provision request for the arbitrary information item to which a first temporal requirement is specified from an arbitrary execution module executed in the one device, the first temporal requirement is the value of the representative time value. If none of the temporal requirements used in the determination match, any of the above information items including a representative time value determined again for a set of temporal requirements including the first temporal requirement in the temporal requirements The device further configured to transmit a request for information provision to the network. 15. The method of claim 14,
When a response message indicating that the time requirement specified in the information provision request has been modified is received after the information provision request is transmitted to the network, the processing unit, as the modified time requirement included in the response message, is the arbitrary information item and change the representative time value determined for 13. The method of claim 12,
The determination unit may include: A first temporal requirement specified in an information provision request for an arbitrary information item received from any one of the plurality of devices through the network is listed for the arbitrary information item on the specific list and if it does not match the one or more temporal requirements, re-determining an information provision manner for the arbitrary information item, based on the set of the one or more temporal requirements including the first temporal requirement. 12. The method of claim 11,
The processing unit includes a device group designated as the first method by the information provision method determined for the corresponding information item, and the first method is the information for another information item with the same combination as the device combination of the group The device is further configured to secure one memory space for accumulating information on the corresponding information item and the other information item to be transmitted in the first manner for the device combination, if present in the device groups determined by the provision method . 12. The method of claim 11,
The at least some of the information items are items corresponding to information designated to be provided by the device, among the information required by the plurality of devices for an intended function. The method of claim 1,
The request interval is to request that there be at least one provision within a specified time for the information of the information item requested to be provided, or to require that there be at least one creation within a specified time. . The method of claim 1,
The processing unit, when the load of the network exceeds a preset standard or when the current processing capability of the device is less than or equal to a preset standard, for information to be provided to at least some of the plurality of devices, and provide to the at least some devices in a manner. An apparatus capable of determining a method of providing information between a plurality of devices connected to a network, the apparatus comprising:
For each of the information items that the plurality of devices are separately designating for at least a part of the information required for the intended function, the requested interval and delay time for the information item, and the device requesting the information item a processing unit configured to obtain and record information to provide a specific list;
In the sets of requested intervals and delay tolerances recorded for any information item on the specific list, the requested interval and delay tolerance are greater than the first and second reference times respectively specified for the requested interval and delay tolerance. If there are a plurality of short sets, a determining unit configured to determine a method of providing information of the arbitrary information item to a plurality of requesting devices recorded together with the plurality of sets by multicast,
the first reference time is a specific time, or a time designated as a time corresponding to a predetermined multiplier of the shortest required interval in the sets, and the second reference time is a specific time, or the set A device that is a time designated as a time corresponding to a pre-specified multiplier of the shortest allowable delay time in the fields. In the method of determining a method of providing information required by a plurality of devices connected to a network, the method comprising:
For each of the information items that the plurality of devices separately designate at least a part of the information required for the intended function, a time requirement including a request interval for the information item and a request device specifying the time requirement Step 1 of having a specific list recorded together with
For each of the at least some information items on the specific list, based on one or more temporal requirements specified for the information item, to one or more devices requesting provision of the corresponding information item for the information of the corresponding information item. In the first method of providing information to all of the one or more devices as a single message, or as a second method of notifying the one or more devices individually with each message A method comprising the step of determining and generating information enabling the determined information provision method to be applied to information provision of the corresponding information item. In the recording medium containing the program object that can be executed in any computing device,
When the program object is loaded into a computing device and executed,
For each of the information items that a plurality of devices connected to a network and perform an intended operation separately designate at least a portion of information required for the operation, a time requirement including a request interval for the information item the ability to have a specific list recorded together with the requesting device specifying its time requirements;
For each of the at least some information items on the specific list, to one or more devices requesting provision of the corresponding information item for information of the corresponding information item based on one or more request intervals specified for the corresponding information item In the first method of providing information to all of the one or more devices as a single message, or as a second method of notifying the one or more devices individually with each message and program codes for performing a function of determining and generating information enabling the determined information provision method to be applied to information provision of the corresponding information item.

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