WO2023231857A1 - Information release method and apparatus - Google Patents

Abstract

Embodiments of the present application provide an information release method and apparatus. The method comprises: a release end device determines, according to first subscription content of a first subscription end device, a first subscription group to which the first subscription end device belongs, the first subscription content comprising first subscription service and/or a first subscription period; and the release end device determines a release strategy for the first subscription group according to the number of subscription end devices needing to release subscription service in the first subscription group. According to the information release method and apparatus provided by the present application, different subscription end devices are added into a subscription group, and a release mode is dynamically adjusted according to the number of subscription end devices needing to release subscription service, so that the release load and the network load of the release end device can be effectively reduced.

Description

Methods and devices for publishing information

This application claims priority to the Chinese patent application filed with the China Patent Office on May 30, 2022, with the application number 202210601457.2 and the application title "Method and Device for Publishing Information", the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the field of data management, and in particular, to a method and device for publishing information.

Background technique

Publish/subscribe systems based on communication networks are increasingly widely used. The subscribing device sends a subscription request to the system to subscribe for information that needs attention. The publishing device can publish the corresponding information based on the subscription request.

Existing publishing methods are generally unicast publishing or multicast publishing. For unicast publishing, as the number of subscribing devices increases, the publishing device needs to publish a large amount of repeated data, resulting in a heavy load. For multicast mode, the publishing device needs to send the union of the subscription contents of all subscribing devices according to the minimum subscription period in the multicast group. As the publishing frequency increases, the publishing load and network load of the publishing device are higher.

How to reduce the load on the publishing device and network in the publish/subscribe system has become an urgent problem to be solved.

Contents of the invention

The embodiments of this application provide a method and device for publishing information, which can effectively reduce the load on the publishing end device and the network when publishing information.

In a first aspect, a method for publishing information is provided, including: the publishing device determines a first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, and the first subscription The content includes the first subscription service and/or the first subscription cycle of the first subscribing device; the publishing device determines the number of subscription services for the first subscription device according to the number of subscribing devices in the first subscription group that need to publish the subscription service. Publishing strategy for the first subscription group.

In this embodiment, the publishing device adds the first subscribing device to the first subscription according to the first subscription service and/or the first subscription period of the subscribing device. The first subscription period may be the subscription period of the first subscription service. Group. Therefore, the first subscription content and the subscription content of other subscriber devices in the first subscription group can be combined to obtain the number of subscriber devices that need to be published, thereby determining a publishing strategy for the first subscription group. Since the number of subscribing devices that need to publish changes at different times, the publishing strategy can also be dynamically updated. By dynamically adjusting the publishing strategy according to the number of subscribing devices that need to publish subscription services, the publishing overhead and the publishing cost of the publishing device during publishing can be reduced. Network load.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the publishing device obtains the first subscription content from the first subscribing device.

In this embodiment, the publishing end obtains the first subscription content from the first subscribing end device, thereby classifying the first subscribing end device into an appropriate subscription group based on the first subscription content, and formulating a corresponding publishing policy.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the publishing device sends a message to The first subscribing device sends first feedback information, where the first feedback information includes the multicast address of the first subscription group to which it belongs.

In this embodiment, after the publishing device adds the first subscribing device to the first subscription group, it can send the first feedback information to the first subscribing device. The feedback information may include the first subscribing device to which the first subscribing device belongs. A multicast address of a subscription group, so that the first subscribing device can monitor the corresponding multicast channel according to the first feedback information and obtain the first subscription content it subscribes to.

With reference to the first aspect, in some implementations of the first aspect, the deviation between the subscription content of any two subscribing devices in the first subscription group is less than or equal to the first preset threshold, and the subscription content includes subscription Periodic and/or subscription services; or, the deviation between each subscriber device in the first subscription group and the reference subscription content of the first subscription group is less than or equal to the second preset threshold.

In this embodiment, the deviation of the subscription content between the subscribing devices in the first subscription group is less than or equal to the first preset threshold or the reference subscription of each subscribing device in the first subscription group and the first subscription group. The deviation between the content is less than or equal to the second preset threshold, which means that the subscription content of each subscriber device in the first subscription group has a certain degree of similarity, thereby facilitating subsequent publishing to the first subscription group. In order to achieve this goal, for example, you can set a first preset threshold for the deviation of the subscription content of any two subscriber devices or set a second preset threshold for the deviation of the reference subscription content between the subscriber device and the first subscription group, and respectively Different deviation determination methods can be set for the above two methods, for example, different deviation calculation methods can be set for the two methods.

With reference to the first aspect, in some implementations of the first aspect, the publishing device determines the first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, including: The publishing device determines at least one matching degree based on the first subscription content, where the at least one matching degree is a matching degree between the first subscription content and the reference content of each subscription group in at least one subscription group, The reference content of each subscription group includes the reference subscription service and/or reference subscription cycle of each subscription group; the publishing device determines the first subscribing device to which the first subscribing device belongs based on the at least one matching degree. First subscription group.

In this embodiment, the publisher determines the matching degree between the first subscription content and the reference subscription content of at least one existing subscription group based on the first subscription content, and finally, based on the at least one matching degree, the first subscribing device Join the first subscription group, so that the subscription contents of all subscribing devices in the first subscribing group including the first subscribing device have a certain degree of similarity, which is conducive to multicast publishing of the subscription group and reduces the publishing of the publishing device. load and network load.

With reference to the first aspect, in some implementations of the first aspect, the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold. .

In this embodiment, the first subscription group that the first subscribing device joins is a subscription group in at least one existing subscription group, and the calculated value of the matching degree corresponding to the first subscription group is greater than the preset threshold, so that the first The subscribing device has a higher matching degree with the first subscription group, which reduces the publishing load and network load of the publishing device.

Combined with the first aspect. In some implementations of the first aspect, the matching degree corresponding to the first subscription group is the highest among the at least one matching degree.

In this embodiment, the subscriber device calculates the matching degree between all existing subscription groups and the first subscription content, selects several subscription groups whose matching degree is greater than or equal to the preset threshold, and selects the one with the largest matching degree. The first subscription group determines that the first subscribing device belongs to the first subscription group, so that the matching degree between the first subscribing device and the first subscription group is high enough to reduce the load of the publishing device.

In conjunction with the first aspect, in some implementations of the first aspect, the first subscription group is not the at least one subscription group. For a subscription group in a reading group, the at least one matching degree is less than a preset threshold, and before the publishing device determines the first subscription group to which the first subscribing device belongs based on the first subscription content, the The method further includes: the publishing device establishing the first subscription group.

In this embodiment, since the matching degree between the reference subscription content of at least one subscription group that has been established and the first subscription content of the first subscribing device is less than the preset threshold, the publishing device newly establishes the first subscription group, and in Next, all subscription groups including the first subscription group are used for matching in the matching process of other subscriber devices.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the publishing device determines a matching degree between the second subscription content of the second subscribing device and the reference content of the first subscription group, The second subscription content includes the second subscription service and/or the second subscription cycle of the second subscribing device, and the reference content of the first subscription group includes the reference subscription service and/or reference subscription of the first subscription group. period, the reference subscription service of the first subscription group is the first subscription service, and the reference subscription period of the first subscription group is the first subscription period.

In this embodiment, when the second subscribing device subscribes, the publishing device calculates the matching degree between the second subscription content and the reference subscription content of all subscription groups including the first subscription group. For the first subscription group, its reference subscription content is the first subscription content of its first subscriber device member—the first subscriber device. The publisher device matches the second subscription content with the reference subscription content. Calculation is performed to finally determine whether to add the second subscriber device to the first subscription group.

Combined with the first aspect, in some implementations of the first aspect, the matching degree S is calculated as follows:
S=a*X+b*Y,

Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.

In this embodiment, the matching degree between the subscription content of the subscribing device and the reference subscription content of the subscription group is calculated by the sum of the matching degrees of the subscription business and the subscription period, thereby effectively reducing the publishing load and network load of the publishing device.

In conjunction with the first aspect, in some implementations of the first aspect, the publishing device determines a publishing strategy for the first subscription group based on the number of subscribing devices in the first subscription group that need to publish, Including: when only one subscriber device in the first subscription group in the first period has content that needs to be published, the publishing device determines to perform unicast publishing in the first period; or, when the first subscription group in the first period When at least two subscribing devices have subscription services that need to be published, the publishing device determines to perform multicast publishing in the first period.

In this embodiment, in the publishing strategy finalized by the publishing device, there is only one subscribing device that needs to publish during the unicast publishing period, and there are at least two subscribing devices that need to publish during the multicast publishing period, and it can be based on The number of subscriber devices that need to be published in the subscription group adjusts the published content to reduce the load of the publisher device and the network load. This period can also be understood as a moment or a point in time.

In conjunction with the first aspect, in some implementations of the first aspect, in the first period, the sum of the data sizes for unicast publishing for the at least two subscriber devices is greater than the size of the data for the at least two subscription devices. The data size for multicast publishing by the end device.

In this embodiment, for the time period or moment of multicast publishing, the publishing device calculates or estimates the sum of the data sizes for unicast publishing by at least two subscribing devices and the sum of the data sizes for multicasting by at least two subscribing devices. The size of published data, and the size of data published by multicast is smaller, so using multicast publishing and dynamically adjusting the publishing method according to the amount of data to be published can reduce the load on the publishing end and the network load.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the publishing device obtains Obtain unsubscription information from the first subscribing device, the unsubscribing information is used to unsubscribe the first subscription content; the publishing device moves the first subscribing device out of the first subscription group .

In this embodiment, the publishing device receives unsubscription information from the first subscribing device to unsubscribe from the first subscription content, and the publishing device moves the first subscribing device out of the first subscription group based on the information.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the publishing device determines that there is no subscribing device in the first subscription group; the publishing device deletes the third A subscription group.

In this embodiment, after the publisher device moves the first subscriber device out of the first subscription group, it determines the number of subscriber devices in the first subscription group. There are no other subscriber devices in the first subscription group. The first subscription group is deleted. That is, when there is no subscribing device in the first subscription group, the first subscription group is deleted. Thereby reducing the storage load of the first subscription group information on the publishing device, and dynamically establishing or deleting the subscription group can make the technical solutions provided by the embodiments of this application have better implementation effects and reduce the load on the publishing device.

In a second aspect, an apparatus for publishing information is provided, including: a processing unit configured to determine a first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, and the third A subscription content includes a first subscription service and/or a first subscription period, and the first subscription period may be the subscription period of the first subscription service; the processing unit is also configured to publish the subscription service according to the needs of the first subscription group The number of subscriber devices determines the publishing strategy for the first subscription group.

In this embodiment, the device for publishing information includes a processing unit. The processing unit adds the first subscribing device to the appropriate first subscription group according to the first subscription content, and adds the first subscribing device to the appropriate first subscription group according to the needs of the first subscription group during the first period. The number of subscriber devices that publish subscription content determines the publishing strategy for the first subscription group, so that the publishing strategy can be dynamically adjusted to reduce the publishing load and network load of the publishing device.

With reference to the second aspect, in some implementations of the second aspect, the deviation between the subscription content of any two subscribing devices in the first subscription group is less than or equal to the first preset threshold, and the subscription content includes subscription Periodic and/or subscription services; or, the deviation between each subscriber device in the first subscription group and the reference subscription content of the first subscription group is less than or equal to the second preset threshold.

With reference to the second aspect, in some implementations of the second aspect, the apparatus further includes a transceiver unit configured to send first feedback information to the first subscriber device, where the first feedback information includes the first The multicast address of the subscribing group.

With reference to the second aspect, in some implementations of the second aspect, the processing unit is specifically configured to: determine at least one matching degree based on the first subscription content, where the at least one matching degree is the first The degree of matching between the subscription content and the reference content of each subscription group in at least one subscription group, the reference content of each subscription group including the reference subscription service and/or reference subscription cycle of each subscription group; according to the At least one matching degree determines the first subscription group to which the first subscriber device belongs.

With reference to the second aspect, in some implementations of the second aspect, the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold. .

With reference to the second aspect, in some implementations of the second aspect, the first subscription group is not a subscription group in the at least one subscription group, the at least one matching degree is less than a preset threshold, and the processing unit , is also used to establish the first subscription group.

With reference to the second aspect, in some implementations of the second aspect, the processing unit is further configured to determine a matching degree between the second subscription content of the second subscribing device and the reference content of the first subscription group, so The second subscription content includes the second subscription service and/or the second subscription cycle of the second subscribing device, and the reference content of the first subscription group includes The reference subscription service and the reference subscription period of the first subscription group, the reference subscription service of the first subscription group is the first subscription service, and the reference subscription period of the first subscription group is the first subscription period.

Combined with the second aspect, in some implementations of the second aspect, the matching degree S is calculated as follows:
S=a*X+b*Y,

Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.

With reference to the second aspect, in some implementations of the second aspect, the processing unit is specifically configured to: when only one subscriber device in the first subscription group in the first period has content that needs to be published, determine whether Unicast publishing is performed in the first period; or, when at least two subscriber devices in the first subscription group in the first period have subscription services that need to be published, it is determined to perform multicast publishing in the first period.

In conjunction with the second aspect, in some implementations of the second aspect, in the first period, the sum of the data sizes for unicast publishing for the at least two subscriber devices is greater than the size of the data for the at least two subscription devices. The data size for multicast publishing by the end device.

With reference to the second aspect, in some implementations of the second aspect, the transceiver unit is also used to obtain unsubscription information from the first subscribing end device, and the unsubscription information is used to unsubscribe from the third subscribing device. A subscription content; the processing unit is also configured to remove the first subscribing device from the first subscription group.

In conjunction with the second aspect, in some implementations of the second aspect, the processing unit is further configured to: determine that there is no subscribing device in the first subscription group; and delete the first subscription group.

In a third aspect, a publishing device is provided. The publishing device includes: one or more processors; one or more memories; the one or more memories store one or more computer programs, and the The one or more computer programs include instructions that, when executed by the one or more processors, cause the electronic device to perform the following steps: determine the first subscription content of the first subscriber device. A first subscription group to which a subscribing device belongs. The first subscription content includes a first subscription service and/or a first subscription period. The first subscription period may be the subscription period of the first subscription service; according to the first subscription The number of subscriber devices in the group that need to publish subscription services determines the publishing strategy for the first subscription group.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: Send first feedback information, where the first feedback information includes the multicast address of the first subscription group.

In connection with the third aspect, in some implementations of the third aspect, the deviation between the subscription content of any two subscribing devices in the first subscription group is less than or equal to the first preset threshold, and the subscription content includes subscription Periodic and/or subscription services; or, the deviation between each subscriber device in the first subscription group and the reference subscription content of the first subscription group is less than or equal to the second preset threshold.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: according to the first subscription content, Determine at least one matching degree, the at least one matching degree being the matching degree between the first subscription content and the reference content of each subscription group in at least one subscription group, and the reference content of each subscription group includes each of the Reference subscription service and/or reference subscription cycle of a subscription group; determine the first subscription group to which the first subscribing device belongs based on the at least one matching degree.

In conjunction with the third aspect, in some implementations of the third aspect, the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold. .

Combined with the third aspect, in some implementations of the third aspect, the first subscription group is not a subscription group in the at least one subscription group, and the at least one matching degree is less than a preset threshold. When the instruction When executed by the one or more processors, the publishing device is caused to perform the following steps: establishing the first subscription group.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: determine the third subscribing device of the second subscribing device. The matching degree between the second subscription content and the reference content of the first subscription group, the second subscription content includes the second subscription service and/or the second subscription period, and the reference content of the first subscription group includes the first subscription group The reference subscription service and/or the reference subscription period, the reference subscription service of the first subscription group is the first subscription service, and the reference subscription period of the first subscription group is the first subscription period.

Combined with the third aspect, in some implementations of the third aspect, the matching degree S is calculated as follows:
S=a*X+b*Y,

Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: when the first subscription group in the first period When only one subscribing device in the first subscription group has content that needs to be published, it is determined to perform unicast publishing in the first period; or, when there are at least two subscribing devices in the first subscription group in the first period that have subscriptions that need to be published. When providing services, it is determined to perform multicast publishing in the first time period.

In conjunction with the third aspect, in some implementations of the third aspect, in the first period, the sum of the data sizes for unicast publishing for the at least two subscriber devices is greater than the size of the data for the at least two subscription devices. The data size for multicast publishing by the end device.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: obtain data from the first subscribing device. Unsubscription information of the device, the unsubscription information is used to unsubscribe the first subscription content; and move the first subscribing device out of the first subscription group.

In conjunction with the third aspect, in some implementations of the third aspect, when the instructions are executed by the one or more processors, the publishing device is caused to perform the following steps: determine the number of members in the first subscription group There is no subscriber device; delete the first subscription group.

A fourth aspect provides a computer-readable storage medium, including a computer program, which when the computer program is run on a computer, causes the computer to execute the method of the first aspect or any implementation of the first aspect.

In a fifth aspect, a device for publishing information is provided, which is characterized in that it includes at least one processor, the processor is coupled to a memory, the memory is used to store instructions, and when the instructions are run by the processor, The processor is caused to execute the method of the first aspect or any implementation of the first aspect.

In a sixth aspect, a computer program product is provided. The computer program product includes computer program code or instructions. When the computer program code or instructions are executed on a computer, the computer program code or instructions cause the computer to execute the first aspect or any aspect of the first aspect. A way to do it.

Description of the drawings

Figure 1 is a schematic architecture diagram of a system suitable for embodiments of the present application.

Figure 2 is a schematic diagram of the publish/subscribe interaction process in an industrial scenario.

Figure 3 shows a method for publishing information provided by an embodiment of the present application.

Figure 4 shows a schematic flow chart of a grouping method in the subscription process provided by this embodiment of the present application.

Figure 5 shows a schematic flowchart of a processing method in the unsubscription process provided by this embodiment of the present application.

Figure 6 shows a device for publishing information provided by an embodiment of the present application.

Figure 7 shows another device for publishing information provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (NR), etc., or communication systems evolved after 5G (for example, 6G communication system), etc. The technical solutions of the embodiments of this application can also be applied to satellite inter-satellite link communication systems, wireless screen projection systems, virtual reality (VR) communication systems, integrated access and backhaul (IAB) links ) system, wireless fidelity (Wi-Fi) communication system, optical communication system, etc., there is no limit to this.

The server involved in this application is also called a server and is a device that provides computing services. Since the server needs to respond to service requests and process them, generally speaking, the server should have the ability to undertake services and guarantee services. The composition of a server includes a processor, hard disk, memory, system bus, etc., which is similar to a general computer architecture. However, due to the need to provide highly reliable services, it must be in terms of processing power, stability, reliability, security, scalability, and availability. Management requirements are relatively high. In a network environment, according to the type of services provided by the server, it is divided into file server, database server, application server, etc.

The terminal equipment in the embodiment of this application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or User device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in the evolved Public Land Mobile Network (PLMN) etc., the embodiments of the present application are not limited to this.

Figure 1 is a schematic architecture diagram of a system suitable for embodiments of the present application. The system includes a publishing device 101, a subscribing device 102, a subscribing device 103 and a subscribing device 104. The subscribing device 102, the subscribing device 103 and the subscribing device 104 all have communication links with the publishing device 101. The publishing device 101 may be a server or a terminal device, for example, it may be a publishing server or a publishing terminal device, and is used for publishing by the subscribing device 102 or the subscribing device. The content subscribed by the device 103 and the subscribing device 104.

The subscribing device may be a server or a terminal device, for example, it may be a subscribing terminal device or a subscribing server. Users can subscribe to different contents from the publishing terminal device through the subscribing terminal device, so that the publishing terminal device publishes the subscribed content to the subscribing terminal device through a link with the subscribing terminal device.

The above numbers of publishing-side devices and subscribing-side devices are only illustrative. In specific situations, for example, there may be more than one publishing device, and each publishing device may be connected to each other to jointly perform publishing tasks. The number of subscriber devices in Figure 1 can also be other numbers. The number of subscriber devices can be one. The one subscriber device can perform one or more subscription tasks. The number of subscriber devices can also be multiple.

In the publish/subscribe mode, the publisher device publishes messages subscribed by the subscriber device generally based on unicast or multicast. Specifically, the subscribing device determines whether to publish in unicast or multicast mode when subscribing.

When the publishing device uses unicast mode to send subscription messages to the subscribing device, as the number of subscribing devices increases, a large amount of duplicate data will be generated, which will put a greater load on the network of the publishing device.

When the publisher device uses multicast to send subscription messages to the subscriber device, as the number of subscriber devices in the multicast group increases, the publisher device needs to send multicast messages to members of the entire subscription group according to the minimum period. As the publishing frequency increases, the network bandwidth and performance of the publishing end device are adversely affected.

In industrial scenarios, due to the continuous expansion of the scale of modern industrial production, production equipment is developing towards a comprehensive automation system. Due to the large geographical span of each equipment in the industrial system, many equipment are deployed outdoors or the operating points of the equipment are scattered. For some industrial productions that have certain environmental requirements, it is necessary to monitor the operating status of industrial equipment, the humidity, temperature and other factors of the production environment in real time. With the continuous development of network technology, mobile terminals such as mobile phones or computers are used to subscribe to the required data, so that the subscription request is published from the publishing terminal to the subscribing terminal, allowing technicians or managers to obtain production status more conveniently , thereby providing a certain reference for its decision-making.

Figure 2 shows the publish/subscribe interaction process in an industrial scenario. As shown in Figure 2, the publishing device corresponds to the publishing device, which can be a server or a terminal device. The subscribing device corresponds to the subscribing device, which can be a subscribing server or a subscribing terminal device. Figure 2 shows N subscribing devices, corresponding to different subscription requests. The subscription request can be sent to the publish/subscribe system by one subscribing device, or can be sent to the system by multiple subscribing devices. This application uses one The subscription segment device corresponds to one publishing information or subscription task as an example to introduce the technical solution of the embodiment of this application. In Figure 2, subscribing device 1 subscribes to published information 1 (temperature), subscribing device 2 subscribes to published information 2 (humidity), subscribing device 3 also subscribes to published information 2 (humidity), and subscribing device 4 Subscribed to published information 1 (temperature) and published information N (water conductivity)... The subscribing device N subscribed to published information 2 (humidity) and published information 3 (water oxygen content). The publishing device can publish the corresponding information according to the subscription cycle in unicast or multicast mode according to the personalized needs of different subscribing devices.

In actual industrial production, for some of the published information shown in Figure 2, such as temperature, humidity, etc., due to the large geographical span of the equipment, it may be necessary to subscribe to the corresponding information for each production area, such as the production workshop, and the subscriber device It is necessary to subscribe to different information combinations to monitor different production conditions. For example, subscribe to the combination of publishing information 1 (temperature) and publishing information 2 (humidity) to monitor the air conditions during production, and subscribe to publishing information 3 (water oxygen content) and publishing information (Water conductivity) combination monitors the water quality of production water, etc. Therefore, the amount of data that needs to be published is large, which consumes a lot of bandwidth when publishing. However, publishing-end equipment in industrial scenarios is generally not configured well, and the release of massive data may cause excessive traffic on the publishing end, affecting the effect of real-time information release and adversely affecting production.

In response to the above problems, embodiments of the present application provide a method of publishing information, which can reduce the complexity of the publish/subscribe model. The load on the publishing device. It should be understood that the publish/subscribe interaction process is introduced above by taking an industrial scenario as an example. The embodiments of this application are not limited to application in industrial scenarios, and can also be applied in other scenarios where the publishing load or network load of the publishing end needs to be reduced.

Figure 3 shows a method for publishing information provided by an embodiment of the present application. As shown in Figure 3, the method includes:

S310: The publishing device determines the first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device. The first subscription content includes the first subscription service and the first subscription cycle.

The first subscription content may be sent directly by the first subscribing device to the publishing device, or may be sent by the first subscribing device to other servers in the publishing/subscribing system for processing, and then forwarded by the server to the publishing device. . The first subscription service may be a field of the subscription service. The first subscription content may also include identification information of the first subscribing device, which may be an IP address, a user ID, etc., so that the publishing device publishes information to the first subscribing device based on the identification information.

The publishing device can be a terminal device or a server. The publishing device is used to publish the content subscribed by the subscribing device. The publishing device can obtain the content that needs to be published from other devices directly or through a program interface. Taking industrial scenarios as an example, the content that needs to be published can be production environment indicators such as temperature and humidity. This indicator can be directly obtained through sensors and processed to a certain extent, and then transmitted to the publishing device, so that the publishing device can use different data according to the subscription. requirements for terminal equipment.

The first subscribing device may correspond to the subscribing device, and the subscribing device may be a separate device, such as a mobile terminal such as a mobile phone or a computer, or the device corresponding to the publishing device may be the same device, for example, the publishing device and the publishing device. The subscriber device corresponds to two modules or units of the same device.

The first subscription content includes a first subscription service and/or a first subscription cycle, and the first subscription service is the content subscribed by the subscribing device. Taking an industrial scenario as an example, the first subscription content can be regularly subscribed by the system, such as monitoring the parameters of the production environment within a specified period of time through a program; the first subscription content can be manually subscribed by technicians or managers, for example, through The publish/subscribe system subscribes to the production parameters that you want to view or manage, etc. The first subscription service may be a single piece of information or multiple pieces of information, for example, it may be a single ambient temperature or a combination of ambient temperature and humidity. The first subscription period is the period that needs to be published. This period can be set according to experience or according to the needs of managers. When a certain parameter changes significantly and is important, a smaller release cycle can be set, such as 5 minutes, so that the production system or staff can detect parameter changes in a timely manner and make certain adjustments to ensure the relatively stable operation of the production environment or system. . When a certain parameter changes slowly or is not of high importance, you can set a larger release cycle, such as 1 hour, to reduce the overhead on the release end.

In S310, the publishing device can add subscribing devices with similar subscription contents to a subscription group based on the subscription content of the subscribing device.

Optionally, before S310, the publishing device obtains the first subscription content from the first subscribing device.

Get can be understood as receiving or determining. The first subscribing device can directly send the services and subscription cycles that need to be subscribed to the publishing device. The first subscription business and the first subscription cycle can be sent to the publishing device through fields or identification information in one message or divided into multiple messages. The information sent by the end device or the subscribing end device requires further processing or determination by the publishing end device to obtain the first subscription content of the first subscribing end device, such as decoding or further processing.

In this embodiment of the present application, the publishing end device determines the first subscription group to which the first subscribing end device belongs based on the first subscription content of the first subscribing end device, including: the publishing end device determines the first subscription group to which the first subscribing end device belongs based on the first subscription content of the first subscribing end device. Describing the first subscription content, Determine at least one matching degree, the at least one matching degree being the matching degree between the first subscription content and the reference content of each subscription group in at least one subscription group, and the reference content of each subscription group includes each of the Reference subscription service and/or reference subscription cycle of a subscription group; the publishing device determines the first subscription group to which the first subscribing device belongs based on the at least one matching degree.

In this embodiment, the matching degree may be equivalent to the similarity between the first subscription content and the reference content of at least one subscription group. Specifically, it may be the similarity between the first subscription period and the reference subscription period of at least one subscription group and/ Or the similarity between the first subscription service and the reference subscription service of at least one subscription group.

In this embodiment of the present application, the deviation between the subscription contents of any two subscribing devices in the first subscription group is less than or equal to the first preset threshold, and the subscription contents include subscription cycles and/or subscription services; or, The deviation between each subscriber device in the first subscription group and the reference subscription content of the first subscription group is less than or equal to a second preset threshold.

In this embodiment, the deviation of the subscription content between the subscribing devices in the first subscription group is less than or equal to the first preset threshold or the reference subscription of each subscribing device in the first subscription group and the first subscription group. The deviation between the content is less than or equal to the second preset threshold, which means that the subscription content of each subscriber device in the first subscription group has a certain degree of similarity, thereby facilitating subsequent publishing to the first subscription group. In order to achieve this goal, for example, you can set a first preset threshold for the deviation of the subscription content of any two subscriber devices or set a second preset threshold for the deviation of the reference subscription content between the subscriber device and the first subscription group, and respectively Different deviation determination methods can be set for the above two methods, for example, different deviation calculation methods can be set for the two methods.

The at least one subscription group may be at least one subscription group that the publisher device has established based on the subscriber device that has subscribed. When the first subscriber device subscribes, it is necessary to combine the first subscription content of the first subscriber device with the existing subscriber device. The reference subscription content of at least one subscription group is compared to determine a matching degree between the first subscription content of the first subscribing device and the reference subscription content of each subscription group of the at least one subscription group.

In some embodiments, the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold.

In this embodiment, there may be several subscription groups in at least one subscription group whose matching degree with the first subscriber device is greater than the preset threshold. When at least one subscription group is one subscription group, the subscription group is the first subscription group. When at least one subscription group is multiple subscription groups, the multiple subscription groups include the first subscription group.

For example, there is only one subscription group in at least one subscription group whose matching degree with the first subscribing device is greater than a preset threshold. This one subscription group can be the first subscription group, so that the publishing device can add the first subscribing device to the first subscribing device according to the matching degree. The terminal device joins the first subscription group.

For another example, there are multiple subscription groups in at least one subscription group, and the matching degree with the first subscription terminal device is greater than the first preset threshold, such as the first subscription group, the second subscription group, the third subscription group and the first subscription terminal. The matching degrees of the devices are all greater than the first preset threshold. The publishing end device may first determine that the matching degree between the first subscription group and the first subscribing end device is greater than the preset threshold when determining the matching degree, that is, stop calculating the matching degree between other subscription groups and the first subscribing end device. This reduces the overhead in matching degree calculation and directly adds the first subscribing device to the first subscription group. The first subscription group may be the first subscription group for which the publishing device calculates the matching degree, so that the publishing device only calculates one matching degree; the first subscription group may also be the Nth matching degree for which the publishing device calculates the matching degree ( N>1), so the publishing device calculates N matching degrees when determining the first subscription group to which the first subscribing device belongs.

The publisher device can also calculate the matching degree between all existing subscription groups and the first subscriber device. Select the first subscription group with the highest matching degree among the candidate subscription groups (such as the first subscription group, the second subscription group, and the third subscription group) whose allocation degree is greater than the preset threshold, thereby adding the first subscribing device to the first subscription group. , this method of adding the first subscribing device to the subscription group with the highest matching degree can improve the similarity of the subscription services of the subscribing devices in each subscription group and reduce the publishing overhead.

In other embodiments, the first subscription group is not a subscription group in the at least one subscription group, and the at least one matching degree is less than a preset threshold. , before determining the first subscription group to which the first subscribing device belongs, the method further includes: the publishing device establishing the first subscription group.

In this embodiment, the matching degree between any one of the at least one subscription group and the first subscriber device is less than the preset threshold, that is, when at least one subscription group is a subscription group, the subscription group is not the first subscription group, When at least one subscription group is multiple subscription groups, the multiple subscription groups do not include the first subscription group. Therefore, the publishing device can newly establish the first subscription group, and the publishing device can add the first subscribing device to the newly established first subscription group.

In this embodiment of the present application, the publishing device may also determine the matching degree between the second subscription content of the second subscribing device and the reference content of the first subscription group. The second subscription content includes the second subscription service and/or the third Two subscription cycles, the reference content of the first subscription group includes the reference subscription service and/or the reference subscription cycle of the first subscription group, the reference subscription service of the first subscription group is the first subscription service, and the third The reference subscription period of a subscription group is the first subscription period.

In this embodiment, the publishing device obtains the second subscription content of the second subscribing device, so that the publishing device can compare the second subscription content with the reference content of multiple subscription groups including the first subscription group. right. As mentioned above, the first subscription group may be established after the first subscriber device does not have a suitable matching group, and the first subscriber device is the first member of the first subscription group, so that after the first subscription group is established , when comparing other subscriber devices with the first subscription group, the reference content of the first subscription group needs to be determined.

The reference content of the first subscription group may be consistent with its first member. For example, the first subscription service may be set as the reference subscription service of the first subscription group, and the first subscription period may be set as the reference subscription period of the first subscription group, Therefore, when subsequent subscriber devices perform matching calculations with the first subscription group, they will use the reference subscription content as a basis for matching calculations.

The reference content of the first subscription group can also be determined by the publishing device based on the subscription services of its previous members. For example, when the reference subscription content includes the reference subscription service and the reference subscription period, it can be specified that the reference subscription of each subscription group The period is not updated and is consistent with the subscription period of the first member, while the reference subscription business can be updated within a certain range. That is, the reference subscription period of a subscription group is the subscription period of its first subscribing member, and the subscription business sets the reference subscription number, so that when the first subscribing member's subscription business is too small, it can be appropriately updated based on the subsequent member's subscription business. If the number of reference subscription services before the Xth member joins is less than the number of reference subscriptions and the number of reference subscription services after the Xth member joins is greater than or equal to the number of reference subscriptions, the reference subscription services will no longer be updated after the Xth member joins. For example, the number of reference subscriptions can be set to 4, so that if the number of subscriptions of the first subscribing device is 1 and the number of reference subscription services is 1, when the second subscribing device joins, the number of new subscription services relative to the reference subscription service will be is 2, so the number of reference subscription services becomes 3, and the number of new subscription services of the third subscription terminal device relative to the current reference subscription service is 2, so the number of reference subscription services becomes 5>4, The reference subscription business will no longer be updated. Then the matching degree with other subscriber devices can be calculated based on the reference subscription service and reference subscription period.

The reference content of the first subscription group can also be preset. For example, when the subscription business of the subscribing device in the subscription publishing system is relatively stable, multiple subscription groups can be preset based on experience, thereby assigning the subscribing device to the preset of Subscription group.

The reference subscription content of the subscription group can also be set in other ways. This is concise and will not be described in detail.

In the embodiment of this application, the matching degree S can be calculated as follows:
S＝a*X+b*Y (Formula 1)

Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.

In the above formula, a*X is the matching degree of the subscription business cycle, and b*Y is the matching degree of the subscription period. The total matching degree can be obtained by adding the two items. The matching can be adjusted by controlling the preset threshold size. the degree of strictness. Since the maximum value of X and Y is both 1 and the minimum value is 0, the variation range of S is 0~a+b. When the preset threshold is larger, the matching condition is higher. For example, when the preset threshold is set to When a+b, the subscription services and subscription cycles of all subscribing devices in the subscription group are the same. When a>b, when the preset threshold is set to a, subscribing devices with the same subscription period will be in the same subscription group, which facilitates the publishing device to multicast subscription services in the subscription group. When a < b, when the preset threshold is set to a, subscribing devices with consistent subscription services will be in the same subscription group, which can reduce the data packet size when publishing by the publishing device.

For example, the subscription cycle weight a is 1, the subscription business weight b is 0.5, the preset threshold is set to 1, the reference subscription cycle of a certain subscription group is 1s, and the reference subscription business is {data 1, data 2, data 3, data 4} , the total number of reference subscription services is 4. The first subscription period of the first subscribing terminal device is 2s, and the first subscription service of the first subscribing terminal device is {data 2, data 3, data 5}, then the overlap rate Y of the first subscription service and the reference subscription service can be passed The ratio of the number of the same contents as the reference subscription service in the first subscription service to the number of the reference subscription service is calculated, in this case Y=2/4=0.5.

To calculate the overlap rate between the first subscription period and the reference subscription period, you can calculate the number of overlaps and the basis published based on the first subscription period and the reference subscription period within a certain period of time, for example, within the least common multiple period of the first subscription period and the reference subscription period. The ratio of the number of times the reference subscription cycle needs to be published (the maximum value is 1). For example, within 10 reference subscription cycles, that is, within 10 seconds, the number of overlaps is 5, and the number of times required to publish according to the reference subscription cycle is 10, then X=5/10=0.5.

Through the above formula, the matching degree S=1*0.5+0.5*0.5=0.5+0.25=0.75 can be calculated.

Since the matching degree S is less than the preset threshold 1, the first subscriber device fails to match the subscription group and needs to continue to match other subscription groups or re-establish the subscription group.

For another example, the subscription period weight a is 1, the subscription service weight b is 0.5, the preset threshold is set to 1, the reference subscription period of another subscription group is 2s, the reference subscription service is {data 2, data 3, data 5}, and the reference subscription period is {data 2, data 3, data 5}. The first subscription period of a subscribing device is 1s, and the first subscription business of the first subscribing device is {data 1, data 2, data 3, data 4}. All time points that need to be published in the first subscription cycle are completely covered. Refer to the time point when the subscription cycle needs to be published. Therefore, the overlap rate of the subscription cycle is 1, and the overlap rate of the subscription business is 2/3. Finally, the matching degree S=1*1+0.5*2/3=1.33 is calculated. If the degree is greater than the preset threshold 1, the first subscriber device can be added to the subscription group.

It should be understood that the above method of calculating the matching degree is only a schematic illustration, and the embodiment of the present application does not limit the specific method of calculating the matching degree. For example, when calculating X in the matching degree formula, it can be calculated within a certain period of time (such as the (the least common multiple of a subscription period and the reference subscription period), the ratio of the number of overlapping publications to the total number of publications. At this time, when the first subscription period and the reference subscription period are exactly the same, X is at most 1/2, and is the same as described above Compared with the calculation method, this calculation method can make the first subscription period different from the reference subscription period, but publishing according to the first subscription period can overwrite Covers all situations at which time points are published according to the reference subscription cycle. For example, only considering the matching process of subscription periods, the reference subscription period of a certain subscription group is 2s, the subscription period of subscriber device 1 is 2s, and the subscription period of subscriber device 2 is 1s, then the reference subscription period and subscriber device are considered 1 and within the least common multiple of the reference subscription cycle and the cycle of the subscriber device 2, that is, within 2 seconds, according to method 1, that is, the number of overlaps published between the first subscription cycle and the reference subscription cycle is equal to the number of times that needs to be published according to the reference subscription cycle When calculating the overlap rate based on the ratio of times, the overlap rate of subscriber device 1 is X1=1/1=1, and the overlap rate of subscriber device 2 is X2=1/1=1. By method 2, when the overlap rate is calculated as the ratio of the number of overlapping releases to the total number of releases, the overlap rate of subscriber device 1 is X1 = 1/2 = 0.5, and the overlap rate of subscriber device 2 is X2 = 1/3 = 0.33. It can be seen from the above calculation process that although the cycles of subscriber device 1 and subscriber device 2 are different, the cycle overlap rates calculated according to method 1 are consistent, but the cycle overlap rates calculated according to method 2 are inconsistent. The specific method used to calculate the period overlap rate needs to be determined based on the specific situation, and the method of calculating the overlap rate illustrated in the technical solution of this application does not constitute a limitation on the technical solution of this application.

It should also be understood that the previous article only introduces the situation of taking into account the subscription service and the subscription period when calculating the matching degree. In some embodiments, the matching degree can also be calculated by comparing the subscription service of the subscribing device and the reference subscription service of the subscription group. ; Or use the subscription cycle of the subscriber device to compare with the reference subscription cycle to calculate the matching degree. The above two methods can also achieve the same effect by adjusting the weight in the previous matching degree calculation formula. However, for the publishing side, adjusting the weight to 0 is compared with matching only the subscription cycle or subscription business. The load may be larger.

Through the steps introduced above, all subscribing devices, including the first subscribing device, can be appropriately grouped. The publishing device can send feedback information to the subscribing device. Correspondingly, the subscribing device receives a reply from the publishing device. The feedback information may include information indicating successful subscription and the multicast address of the subscription group to which the subscribing device belongs. Corresponding to different subscriber devices, because they are assigned to different subscription groups, the multicast addresses in the feedback information are also different.

Figure 4 shows a schematic flow chart of the grouping method in the subscription process provided by the embodiment of the present application. As shown in Figure 4, the method includes:

S410: The subscribing device sends a subscription request to the publishing device.

S420: The publishing device determines whether the subscription request meets the matching degree of the existing subscription group.

S432: When the publishing device determines that the subscription request of the subscribing device meets the matching degree of the existing subscription group, the publishing device adds the current subscribing device to the subscription group and sends feedback information to the subscribing device.

S434, when the publishing device determines that the subscription request of the subscribing device does not meet the matching degree of the existing subscription group, the publishing device creates a subscription group based on the current subscription content, and adds the subscribing device to the created subscription group, and Send feedback information to the subscribing device.

In some cases, the subscribing device may cancel the subscription. The embodiment of the present application also provides a method for canceling the subscription by the subscribing device.

In this embodiment of the present application, the method includes: the publishing end device obtains unsubscription information from the first subscribing end device, and the unsubscription information is used to unsubscribe from the first subscription content; the publishing end device The device moves the first subscribing device out of the first subscription group.

In this embodiment, the unsubscription information may include identification information of the first subscribing device. After the publishing device obtains the unsubscribing information, it moves the corresponding subscribing device out of the first subscription group in which it is located. After the first subscribing device is moved out of the first subscription group, feedback information can be sent to the first subscribing device for sending the first subscribing device to the first subscribing device. Notification unsubscription successful.

Afterwards, the publisher device can determine whether there are other subscriber devices in the first subscription group.

In some embodiments, the publishing device determines that there are other subscribing devices in the first subscription group, and the publishing device can update the publishing mode corresponding to the first subscription group.

In other embodiments, the publishing device determines that there are no other subscribing devices in the first subscription group, and the publishing device can delete the first subscription group, thereby reducing the cost of maintaining the subscription group by the publishing device.

Figure 5 shows the processing method for unsubscription provided by the embodiment of this application. As shown in Figure 5, the method includes:

S510: The subscribing device sends an unsubscription request to the publishing device.

S520: The publisher device removes the subscriber device from the subscription group.

S530: The publishing device sends feedback information to the subscribing device to report successful cancellation of the subscription.

S540: The publishing device determines whether there are other subscribing devices in the subscription group.

S550: The publisher device determines that there is no other subscriber device in the subscription group, and deletes the subscription group.

Through the method mentioned above, the publishing device can dynamically maintain multiple subscription groups, and set the subscribing devices with similar subscription contents into a subscription group, so that the publishing device can adjust the subscriptions of multiple subscribing devices in the subscription group. content and publish it.

S320: The publishing device determines a publishing policy for the first subscription group based on the number of subscribing devices in the first subscription group that need to publish subscription services.

In this embodiment, different from the commonly used fixed multicast method, the technical solution adopted in the embodiment of this application is to reduce the load of the publishing end device and the network load, and dynamically decide the publishing method to be used for the same subscription group, that is, for A subscription group determines the publishing method based on the number of subscriber devices that need to publish subscription services. When there is more than one subscriber device that needs to publish subscription services at a certain time, if the subscription services that the more than one subscriber device needs to publish have overlapping content, the union of the subscription services of the more than one subscriber device may be smaller than when sending them individually. The algebraic sum of the size of its subscription business. Therefore, multicast publishing can be performed to reduce the publishing load and network load on the publishing end.

On the whole, the technical solution provided by the embodiments of this application can estimate the data volume of information to be published for all subscribing devices in the subscription group, and select a method with a smaller data volume for publishing.

In this embodiment of the present application, the publishing device determines a publishing strategy for the first subscription group based on the number of subscribing devices that need to publish in the first subscription group, including: when the first subscription in the first period When only one subscriber device in the group has content that needs to be published, the publisher device determines to perform unicast publishing in the first period; or, when there are at least two subscribers in the first subscription group in the first period When the device has subscription services that need to be published, the publishing end device determines to perform multicast publishing in the first period.

In this embodiment, the publishing method is dynamically adjusted according to the number of subscribing devices that need to publish for a certain period or time point (moment). That is, during a period when only one subscribing device needs to publish, unicast publishing is used. Multicast publishing is used for a period of time that needs to be published. The publishing strategy is simple, which facilitates the publishing device to dynamically adjust the publishing strategy, and the load when implementing the publishing strategy is small.

In some embodiments, it may be specified that multicast publication is performed only when the number of subscriber devices that need to publish is greater than a threshold. Since when the number of publishing devices is greater than the threshold, there may be more devices that need to publish during this time period or moment, the multicast publishing method can further reduce the publishing load and network load of the publishing device.

Further, in this embodiment of the present application, during the first period, the sum of the data sizes for unicast publishing for the at least two subscribing end devices is greater than the size of the data for multicast publishing for the at least two subscribing end devices. The data is large Small.

That is, for a certain period of time, when the number of subscriber devices that need to be published is at least two, the server can further estimate the sum of the data sizes for unicast release for the at least two subscriber numbers and for the subscriber. The data size when the device performs multicast publishing. When the multicast data size is small, multicast mode is used. Through this embodiment, the publishing load and network load of the publishing end device can be further reduced, and the publishing strategy can be optimized.

For example, in a subscription group, there are three subscribing devices, namely the first subscribing device, the second subscribing device and the third subscribing device. The first subscribing period of the first subscribing device is 2s. The business is {data 2, data 3, data 5}; the second subscription period of the second subscriber device is 1s, and the second subscription business is {data 1, data 2, data 3, data 4}; the third subscriber device The third subscription period is 4s, the third subscription business is {data 2, data 3, data 5}, the set subscription cycle weight a is 1, the subscription business weight is 0.5, the preset threshold of the matching degree is 1, and the three Among the subscriber devices, the first subscriber device is the first to enter the subscription group. According to the technical solution mentioned above, the matching degree of the second subscriber device and the subscription group can be calculated S2=1*1+0.5*2 /3=1.33, you can add the second subscriber device to the subscription group. The matching degree of the third subscriber device and the subscription group is S3=1*0.5+0.5*1=1, which just meets the preset threshold of the matching degree. A third subscriber device can be added to the subscription group.

For the subscription group including the above three subscribing devices, examine the publishing method of the publishing device within 4 seconds:

At the 1s, {data 1, data 2, data 3, data 4} of the second subscriber device need to be published.

At 2s, {data 2, data 3, data 5} of the first subscriber device and {data 1, data 2, data 3, data 4} of the second subscriber device need to be published.

At 3s, {data 1, data 2, data 3, data 4} of the second subscriber device need to be published. .

At 4s, {data 2, data 3, data 5} of the first subscribing device, {data 1, data 2, data 3, data 4} of the second subscribing device and {data of the third subscribing device 2, data 3, data 5}.

Suppose the size of {data1, data2, data3, data4} is 80 bytes, the size of {data2, data3, data5} is 60 bytes, {data1, data2, data3, data4 , the size of data 5} is 100 bytes.

Therefore, within 4 seconds, if all members of the subscription group use unicast to publish, the publishing device needs to publish the size

L1＝4*80+2*60+1*60＝500 bytes.

Within 4 seconds, if fixed multicast is used for publishing to all members of the subscription group, the publishing device needs to send {data 1, data 2, data 3, data 4, data 5} every 1 second, so the size of the publication needs to be

L2＝100*4＝400 bytes.

Within 4s, a dynamic decision-making method can be adopted. For example, since only the second subscriber device needs to publish at 1s and 3s, unicast publishing {data 1, data 2, data 3, data 4 can be performed to the second subscriber device }, at 2s, the first subscribing device and the second subscribing device need to publish, using the multicast publishing method, send the union of the subscription services of the first subscribing device and the second subscribing device {data 1, data 2, data 3. Data 4, data 5}. At the 4th second, the first subscribing device, the second subscribing device and the third subscribing device all need to be published. The union of the subscription services of the three subscribing devices can be multicasted {data 1, data 2, data 3, data 4, data 5}, thus the final size that needs to be published

L3＝80*2+100+100＝360 bytes.

By comparing the sizes of the above three publishing methods, it can be seen that the publishing method using the technical solution of this application publishes the smallest data, and can effectively reduce the publishing load and network load of the publishing end device.

All subscribing devices in the subscription group can monitor the unicast channel and multicast channel to obtain the data published by the publishing device, and demodulate to obtain the data they need.

Figure 6 shows a device 600 for publishing information provided by an embodiment of the present application. The device 600 may be a publishing end device, or may be a device in the publishing end device, corresponding to the publishing end device in the methods in Figures 3 to 5.

The apparatus 600 for publishing information includes: a processing unit 610, configured to determine the first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, where the first subscription content includes a first subscription service and/or the first subscription period; the processing unit 610 is also configured to determine a publishing strategy for the first subscription group according to the number of subscriber devices in the first subscription group that need to publish subscription services in the first period , the all subscriber devices include the first subscriber device.

In this embodiment, the apparatus 600 for publishing information includes a processing unit 610. The processing unit 610 adds the first subscribing device to the appropriate first subscription group according to the first subscription content of the first subscribing device, and adds the first subscribing device to the appropriate first subscription group according to the first subscribing content. The subscription contents of all subscribing devices in the subscription group, that is, based on the number of subscribing devices that need to publish and subscribe services, dynamically adjust the publishing method of the publishing device to reduce the publishing load and network load of the publishing device.

In some embodiments of the present application, the device further includes a transceiver unit 620, which is further configured to send first feedback information to the first subscriber device, where the first feedback information includes the multicast address of the first subscription group to which it belongs. .

In some embodiments of this application, the deviation between the subscription contents of any two subscribing devices in the first subscription group is less than or equal to the first preset threshold, and the subscription contents include subscription cycles and/or subscription services; or , the deviation between each subscriber device in the first subscription group and the reference subscription content of the first subscription group is less than or equal to the second preset threshold.

In some embodiments of the present application, the processing unit 610 is specifically configured to: determine at least one matching degree based on the first subscription content, where the at least one matching degree is the first subscription content and at least one subscription group The matching degree of the reference content of each subscription group, the reference content of each subscription group includes the reference subscription service and/or reference subscription cycle of each subscription group; according to the at least one matching degree, determine the The first subscription group to which the first subscriber device belongs.

In some embodiments of this application, the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold.

In some embodiments of this application, the first subscription group is not a subscription group in the at least one subscription group, and the at least one matching degree is less than a preset threshold. The processing unit 610 is also used to establish the First subscription group.

In some embodiments of the present application, the processing unit 610 is also used to determine the matching degree between the second subscription content of the second subscribing device and the reference content of the first subscription group, where the second subscription content includes the third Two subscription services and/or a second subscription period, the reference content of the first subscription group includes the reference subscription service and/or the reference subscription period of the first subscription group, and the reference subscription service of the first subscription group is the second subscription service. A subscription service, the reference subscription period of the first subscription group is the first subscription period.

In some embodiments of this application, the matching degree S is calculated as follows:
S=a*X+b*Y,

Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.

In some embodiments of the present application, when only one subscriber device in the first subscription group in the first period has content that needs to be published, it is determined to perform unicast publishing in the first period; or, when the first subscription group in the first period has content that needs to be published, A subscription group has at least When two subscribing devices have subscription services that need to be published, it is determined to perform multicast publishing in the first period.

In some embodiments of the present application, in the first period, the sum of the sizes of data published by unicast for the at least two subscribing devices is greater than the data size published by multicast for the at least two subscribing devices. size.

In some embodiments of this application, the transceiver unit 620 is also used to obtain unsubscription information from the first subscribing device, and the unsubscription information is used to unsubscribe from the first subscription content; the processing Unit 610 is also used to remove the first subscriber device from the first subscription group.

In some embodiments of this application, the processing unit 610 is further configured to: determine that there is no subscribing device in the first subscription group; and delete the first subscription group.

Figure 7 shows a device 700 for publishing information provided by an embodiment of the present application. The device 700 for publishing information includes: a processor 720 . In the embodiment of the present application, the processor 720 is used to implement corresponding control management operations. For example, the processor 720 is used to support the device 700 for publishing information to perform the methods, operations or functions of the foregoing embodiments. Optionally, the device 700 for publishing information may also include: a memory 710 and a communication interface 730; the processor 720, the communication interface 730, and the memory 710 may be connected to each other or connected to each other through a bus 740. Among them, the communication interface 730 is used to support the communication between the device 700 for publishing information and the subscribing device, etc., and the memory 710 is used to store the program code and data of the device 700 for publishing information. The processor 720 calls the code or data stored in the memory 710 to implement corresponding operations. The memory 710 may or may not be coupled with the processor. Coupling in the embodiments of this application is an indirect coupling or communication connection between devices, units or modules that publish information. It can be in electrical, mechanical or other forms and is used for information between devices, units or modules that publish information. Interaction.

The processor 720 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Communication interface 730 may be a transceiver, circuit, bus, module, or other type of communication interface. The bus 740 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 7, but it does not mean that there is only one bus or one type of bus.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In this application, "at least one" refers to one or more, and "plurality" refers to two or more. "And/or" describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c An item (item) can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

It will be understood that reference throughout this specification to "some embodiments" means that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of "in some embodiments" or "in other embodiments" in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

It should also be understood that the first, second and various numerical numbers involved in this article are only distinctions for convenience of description and are not used to limit the scope of the embodiments of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (25)

1. A method of publishing information, characterized by including:

   The publishing device determines the first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, where the first subscription content includes the first subscription service and/or the first subscription cycle;

   The publishing device determines a publishing strategy for the first subscription group based on the number of subscribing devices in the first subscription group that need to publish subscription services.
2. The method of claim 1, further comprising:

   The publishing device sends first feedback information to the first subscribing device, where the first feedback information includes the multicast address of the first subscription group.
3. The method according to claim 1 or 2, characterized in that the publishing device determines the first subscription group to which the first subscribing device belongs based on the first subscription content of the first subscribing device, including:

   The publishing device determines at least one matching degree based on the first subscription content, where the at least one matching degree is a matching degree between the first subscription content and the reference content of each subscription group in at least one subscription group, The reference content of each subscription group includes the reference subscription service and/or reference subscription cycle of each subscription group;

   The publishing device determines the first subscription group to which the first subscribing device belongs based on the at least one matching degree.
4. The method according to any one of claims 3, characterized in that the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold.
5. The method according to any one of claims 3, characterized in that the first subscription group is not a subscription group in the at least one subscription group, and the at least one matching degree is less than a preset threshold. Before the publishing device determines the first subscription group to which the first subscribing device belongs based on the at least one matching degree, the method further includes:

   The publishing device establishes the first subscription group.
6. The method of claim 5, further comprising:

   The publishing end device determines a matching degree between the second subscription content of the second subscribing end device and the reference content of the first subscription group, and the second subscription content includes the second subscription service of the second subscribing end device and /or a second subscription period, the reference content of the first subscription group includes the reference subscription service and/or the reference subscription period of the first subscription group, and the reference subscription service of the first subscription group is the first subscription service, The reference subscription period of the first subscription group is the first subscription period.
7. The method according to any one of claims 3 to 5, characterized in that the matching degree S is calculated as follows:

   S=a*X+b*Y,

   Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.
8. The method according to any one of claims 1 to 7, characterized in that the publishing device determines the number of the first subscription group according to the number of subscribing devices in the first subscription group that need to be published. Release strategy, including:

   When only one subscribing device in the first subscription group in the first period has subscription services that need to be published, the publishing device The device determines to perform unicast publishing in the first period; or,

   When at least two subscribing devices in the first subscription group in the first period have subscription services that need to be published, the publishing device determines to perform multicast publishing in the first period.
9. The method according to claim 8, characterized in that, in the first period, the sum of the data sizes for unicast publishing for the at least two subscriber devices is greater than the size of the data for the at least two subscriber devices. The data size for multicast publishing.
10. The method according to claim 1 or 2, characterized in that, the method further includes:

    The publishing device obtains unsubscription information from the first subscribing device, and the unsubscribing information is used to unsubscribe from the first subscription content;

    The publishing device moves the first subscribing device out of the first subscription group.
11. The method according to any one of claims 1 to 10, characterized in that the method further includes:

    The publishing device determines that there is no subscribing device in the first subscription group;

    The publishing device deletes the first subscription group.
12. A device for publishing information, characterized by including:

    A processing unit configured to determine the first subscription group to which the first subscription device belongs based on the first subscription content of the first subscription device, where the first subscription content includes a first subscription service and/or a first subscription cycle ;

    The processing unit is further configured to determine a publishing strategy for the first subscription group based on the number of subscribing devices in the first subscription group that need to publish subscription services.
13. The device according to claim 12, characterized in that the device further includes:

    A transceiver unit configured to send first feedback information to the first subscriber device, where the first feedback information includes the multicast address of the first subscription group to which it belongs.
14. The device according to claim 12 or 13, characterized in that the processing unit is specifically used for:

    According to the first subscription content, at least one matching degree is determined, and the at least one matching degree is the matching degree between the first subscription content and the reference content of each subscription group in at least one subscription group, and each subscription The reference content of the group includes the reference subscription service and/or reference subscription cycle of each subscription group;

    According to the at least one matching degree, the first subscription group to which the first subscriber device belongs is determined.
15. The device according to any one of claims 14, characterized in that the first subscription group is a subscription group in the at least one subscription group, and the matching degree corresponding to the first subscription group is greater than or equal to a preset threshold.
16. The device according to any one of claims 15, characterized in that:

    The first subscription group is not a subscription group among the at least one subscription group, and the at least one matching degree is less than a preset threshold. The processing unit is also configured to establish the first subscription group.
17. The device according to claim 16, characterized in that:

    The processing unit is also configured to determine the matching degree between the second subscription content of the second subscribing device and the reference content of the first subscription group, where the second subscription content includes a second subscription service and/or a second subscription Period, the reference content of the first subscription group includes the reference subscription service and/or the reference subscription period of the first subscription group, the reference subscription service of the first subscription group is the first subscription service, and the first subscription The reference subscription period of the group is the first subscription period.
18. The device according to any one of claims 14 to 16, characterized in that the matching degree S is calculated as follows:

    S=a*X+b*Y,

    Where, a is the subscription cycle weight, b is the subscription service weight, X is the overlap rate of the first subscription cycle and the reference subscription cycle, and Y is the overlap rate of the first subscription service and the reference subscription service.
19. The device according to any one of claims 12 to 18, characterized in that the processing unit is specifically used for:

    When only one subscriber device in the first subscription group in the first period has subscription services that need to be published, determine to perform unicast publishing in the first period; or,

    When at least two subscriber devices in the first subscription group in the first period have subscription services that need to be published, it is determined to perform multicast publishing in the first period.
20. The apparatus according to claim 19, characterized in that, in the first period, the sum of the data sizes for unicast publishing for the at least two subscriber devices is greater than the size of the data for the at least two subscriber devices. The data size for multicast publishing.
21. The device according to claim 12 or 13, characterized in that,

    The transceiver unit is also used to obtain unsubscription information from the first subscribing device, where the unsubscription information is used to unsubscribe from the first subscription content;

    The processing unit is also configured to remove the first subscriber device from the first subscription group.
22. The device according to any one of claims 12 to 20, characterized in that the processing unit is also used to:

    Determine that there is no subscribing device in the first subscription group;

    Delete the first subscription group.
23. A device for publishing information, characterized by comprising at least one processor, the processor being coupled to a memory, the memory being used to store instructions, and when the instructions are run by the processor,

    The processor is caused to perform the method according to any one of claims 1 to 11.
24. A computer-readable storage medium includes a computer program, which when the computer program is run on a computer, causes the computer to perform the method according to any one of claims 1 to 11.
25. A computer program product, characterized in that the computer program product includes computer program code or instructions, and when the computer program code or instructions are executed on a computer, the computer executes any one of claims 1 to 11 the method described.