CN110958308B - A method for network distribution, IoT device, and access device - Google Patents

Abstract

The application belongs to the technical field of equipment distribution networks, and relates to a method for a distribution network, which is used for an internet of things device and comprises the following steps: transmitting a wireless signal; carrying out forward temporary distribution network with access equipment, and exchanging a secret key with the access equipment; after the access equipment disconnects the forward temporary distribution network, the access equipment and the access equipment are subjected to reverse temporary distribution network; and after obtaining the authorization of the user, receiving the distribution network information sent by the access equipment, decrypting the distribution network information through the key, and carrying out formal distribution network with the access equipment. The method can establish a temporary distribution network between the Internet of things equipment and the access equipment, and provide one-to-one communication between the Internet of things equipment and the access equipment; after the equipment of the internet of things obtains the authorization of the user, the formal distribution network with the access equipment can be automatically realized, so that the problem that the distribution network of the equipment of the internet of things is complex is solved, and the formal distribution network information is not required to be input. The application also discloses an internet of things device and an access device.

Description

A method for network distribution, IoT device, and access device

technical field

The present application relates to the technical field of device distribution network, for example, to a method for network distribution, an IoT device, and an access device.

Background technique

At present, with the development of the Internet of Things, more and more smart home appliances and home equipment have entered thousands of households. Most of the home appliance manufacturers directly broadcast the distribution network information through the gateway or the distributed network equipment broadcasts the distribution network information to realize the Internet of Things equipment. distribution network. The way the gateway directly broadcasts the network distribution information is similar to the WPS (WiFi Protected Setup) method of the router, the difference is that the Pin (Pin Input Configuration) code is empty or fixed; An IoT device, and then this IoT device broadcasts the distribution network information.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

Low security factor of distribution network: users’ own equipment can receive distribution network information, and other users’ equipment can also receive it; the process of equipment distribution network is cumbersome; manual input of information is prone to errors, and consumes a lot of manpower and material resources, which brings extremely poor User distribution network experience.

SUMMARY OF THE INVENTION

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be a general commentary, nor to identify key/critical elements or delineate the scope of protection of these embodiments, but rather to serve as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a method for network distribution, an IoT device, and an access device, so as to solve the technical problem of complex network distribution process of the IoT device.

In some embodiments, the method for distributing a network, for an IoT device, includes:

Perform forward temporary network configuration with the access device, and exchange keys with the access device;

After the access device disconnects the forward temporary network configuration, perform reverse temporary network configuration with the access device;

After obtaining user authorization, the network configuration information sent by the access device is received, and the network configuration information is decrypted by the key, and the network configuration is formally performed with the access device.

In some embodiments, the method for network distribution, for access equipment, includes:

Perform forward temporary network distribution with the IoT device, and exchange keys with the IoT device;

Disconnect the forward temporary distribution network with the IoT device;

Perform reverse temporary network distribution with the IoT device;

After the IoT device is authorized by the user, the network configuration information is encrypted by the key and sent to the IoT device for formal network configuration with the IoT device.

In some embodiments, the IoT device includes a first processor and a first memory storing program instructions, and the first processor is configured to, when executing the program instructions, execute the above-described method for IoT The method of network distribution of equipment.

In some embodiments, the access device includes a second processor and a second memory storing program instructions, the second processor is configured to, when executing the program instructions, execute the above-described method for accessing The method of network distribution of equipment.

The method for network distribution, the access device, and the IoT device provided by the embodiments of the present disclosure can achieve the following technical effects: through the temporary distribution network established between the IoT device and the access device, the access device and the access device are provided with One-to-one communication between IoT devices; after the IoT device is authorized by the user, it can automatically realize the formal distribution network with the access device, thus solving the complex problem of IoT device distribution network and realizing the need to avoid input of formal distribution network information.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

FIG. 1 is a flow chart of a method for network distribution provided by an embodiment of the present disclosure, and a method for network distribution of IoT devices;

Fig. 2 is a method for network distribution provided by an embodiment of the present disclosure, a flow chart of the method for network distribution of an access device;

3 is a flow chart of a temporary network distribution of a WiFi device provided by an embodiment of the present disclosure;

4 is a flowchart of a WiFi device client authorization provided by an embodiment of the present disclosure;

FIG. 5 is a flow chart of formal network distribution of a WiFi device provided by an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of an IoT device provided by an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an access device provided by an embodiment of the present disclosure.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

An embodiment of the present disclosure provides a method for network distribution, which is used for IoT devices. FIG. 1 is a flowchart of a network distribution method for IoT devices, including:

Step S101. Perform forward temporary network configuration with the access device, and exchange keys with the access device;

Step S102. After the access device disconnects the forward temporary network configuration, perform reverse temporary network configuration with the access device;

Step S103. After obtaining the user authorization, receive the network configuration information sent by the access device, decrypt the network configuration information through the key, and perform formal network configuration with the access device.

In some embodiments, forward temporary network configuration is performed with the access device after entering the SoftAP mode of the soft access point.

In some embodiments, after the access device disconnects the forward temporary network configuration, the method further includes: exiting the SoftAP mode.

In some embodiments, performing forward temporary network configuration with an access device includes: transmitting a wireless signal; and performing forward temporary network configuration after receiving a temporary network configuration request sent by the access device.

In some embodiments, performing reverse temporary network configuration with the access device includes: sending a temporary network configuration request to the access device to establish reverse temporary network configuration.

An embodiment of the present disclosure provides a method for network distribution, which is used for an access device. FIG. 2 is a flowchart of a network distribution method for an access device, including:

Step S201. Perform forward temporary network distribution with the IoT device, and exchange keys with the IoT device;

Step S202. Disconnect the forward temporary distribution network with the IoT device;

Step S203. Perform reverse temporary network distribution with the IoT device;

Step S204. After the IoT device obtains the authorization from the user, the network configuration information is encrypted by the key and sent to the IoT device for formal network configuration with the IoT device.

In some embodiments, the method for accessing a device's network configuration further includes: receiving authorization information for the IoT device.

In some embodiments, receiving authorization information for the IoT device includes: receiving an authorization page display request; in a broadcast state, intercepting the authorization page display request; otherwise, triggering the client to display the authorization page; Authorization information for IoT devices.

In some embodiments, performing forward temporary network configuration with an access device includes: detecting a wireless signal sent by the IoT device; and sending a temporary network configuration request to the IoT device for forward temporary network configuration.

In some embodiments, performing reverse temporary network configuration with the access device includes: performing reverse temporary network configuration after receiving a temporary network configuration request sent by the IoT device.

The method for network distribution of access equipment further includes: timing the temporary distribution network time, and exiting the temporary distribution network when the timer reaches a set threshold.

In some embodiments, the method for network configuration of an access device further includes: when an IoT device is connected, re-timing the temporary network configuration time.

According to the method for network distribution in the above embodiments, the method for network distribution provided by the embodiments of the present disclosure can provide a one-to-one connection between the access device and the IoT device through the temporary distribution network established between the IoT device and the access device. After the IoT device is authorized by the user, it can realize the formal network distribution automatically with the access device, so as to solve the complex problem of the IoT device distribution network and realize the free input of formal network distribution information.

In some embodiments, the access device used for network distribution is a hotspot (AP, AccessPoint) device connected to the IoT device, and the IoT device used for network distribution is a wireless fidelity (WiFi, Wireless Fidelity) module. WiFi device; In order for the AP device to be connected to the software access point (SoftAP, Software Access Point) of the WiFi device as a client at the same time, the AP device supports the station (STA, Station)/AP hybrid mode. As shown in Figure 3, it is a flow chart of temporary network distribution for WiFi devices, including:

Step S301. The AP device enters the STA/AP promiscuous mode and scans the WiFi device AP;

Step S302. The user operates the WiFi device to enter the network configuration state;

Step S303. The WiFi device enters the SoftAp mode and transmits wireless signals;

Step S304. The AP device discovers the WiFi device SoftAp, that is, discovers the wireless signal of the WiFi device;

Step S305. The AP device is connected to the WiFi device AP network, that is, the AP device and the WiFi device perform forward temporary network configuration;

Step S306. After the AP device and the WiFi device are successfully provisioned in the forward direction, pass the key KEY of the AP device to the WiFi device;

Step S307. The WiFi device receives the key of the AP device and transmits the key of the WiFi device to the AP device;

Step S308. The AP device receives the key of the WiFi device, and sends the temporary network configuration service set identifier (SSID, Service Set Identifier) and password with ciphertext to the WiFi device;

Step S309. The AP device disconnects the forward temporary distribution network with the WiFi device (that is, the AP connection);

Step S310. The WiFi device and the access device perform reverse temporary network configuration, that is, the WiFi device is connected to the AP;

Step S311. The WiFi device exits the temporary network configuration state.

The access device used for the distribution network times the distribution network time: when the timer reaches the set threshold, it exits the distribution network mode. Set the first threshold as K, in seconds. After the AP device enters the distribution network, the timer T starts to count, and when the timer exceeds K, it exits the distribution network state; during the timing process, whenever there is a new temporary distribution network When the WiFi device is connected to the AP device, reset the timer T and re-time. When a user opens the setting page, the timer T pauses until all pages are closed.

Through the temporary distribution network established between the WiFi device and the AP device, one-to-one communication between the WiFi device and the AP device is provided. After the temporary distribution network is established, the two parties exchange keys with each other, which is used to encrypt messages during the official network distribution. Temporary network configuration is the establishment of a connection between the WiFi device and the AP device. At this time, although the WiFi device is connected to the AP device, it can only communicate with the AP device itself, and cannot send and receive any data to other terminals (whether it is an internal network or an external network). .

As shown in Figure 4, the authorization flow chart for WiFi device users includes:

Step S401. The user opens a browser to visit any website;

Step S402. send a hypertext transfer protocol (HTTP, HyperText TransferProtocol) request to the AP device through the browser;

Step S403. If the AP device is in a broadcast state, the AP device intercepts the HTTP request;

Step S404. The AP device returns the WiFi device authorization page to the browser;

Step S405. The browser displays the authorization page;

Step S406. The user clicks the authorization button;

Step S407. The browser sends authorization information to the AP device.

After the WiFi device and the AP device establish a temporary network configuration, the user can know which candidate WiFi devices this AP device has, and set which devices can establish a formal connection with the AP device, so as to complete the network access authorization of the candidate device. That is: after the WiFi device and the AP device establish a temporary network configuration, the client obtains the information of the WiFi device that has established a temporary network configuration with the AP device, and independently selects the required WiFi device according to the needs to establish a formal connection with the AP device; the client obtains The interface of WiFi device information is in the form of HTTP page. The method of using HTTP pages is highly versatile, and users can operate it through mobile phones and personal computers (PC, personal computer), without learning costs, and manufacturers do not need to invest too much development costs.

Optionally, the interface through which the user terminal obtains the information of the WiFi device is a custom communication protocol, and an application (APP, Application) is used as the user entrance.

Optionally, the user uses a mobile phone or a personal computer (PC, personal computer).

As shown in Figure 5, the flow chart of the official network configuration for WiFi devices, including:

Step S501. The browser sends authorization information to the AP device;

Step S502. The AP device receives the authorization information sent by the client, and sends the official network configuration information to the WiFi device, where the official network configuration information is the official network configuration information with ciphertext;

Step S503. The WiFi device receives the official network distribution information with ciphertext sent by the AP device, and sends an acknowledgment character (ACK, Acknowledge character) with the ciphertext to the AP device;

Step S504. Execute the formal distribution network, and the distribution network is completed;

Step S505. The AP device receives the confirmation character with ciphertext sent by the WiFi device, and returns the authorization success information to the browser;

Step S506. The browser displays the authorization success page information.

For the encryption link, the WiFi device and the AP device are the key keys that are transmitted to each other in plain text. The encryption key can be regarded as the public key of both parties. The encryption method adopts the symmetric encryption method. Layer) encryption algorithm.

Optionally, the encryption method adopts an asymmetric Secure Sockets Layer (SSL, Secure Sockets Layer) encryption method.

Optionally, the HTTP page includes an entry for manually exiting the network configuration mode, and optionally, the entry for manually exiting the network configuration mode is set as a button.

In the embodiment of the present disclosure, a preliminary communication mechanism between the WiFi device and the AP device is established by means of temporary network distribution, and the AP device is connected to the SoftAP of the WiFi device, and the ordinary AP device is temporarily assigned to the network, and then to the formal network. The transmission mode is changed from temporary plaintext broadcast to ciphertext direct connection, which ensures the convenience of establishing communication and also takes into account the security of the distribution network; HTTP interception is adopted, as long as the AP device is in the distribution network mode, all The HTTP request through the AP device will be intercepted, and the authorization page of the WiFi device network configuration will be displayed on the browser; at the end of the temporary network configuration, the two parties exchange the KEY to realize the encryption of the subsequent official network configuration information; the configuration of the AP device The network mode will exit within a certain period of time.

An embodiment of the present disclosure provides an IoT device, the structure of which is shown in FIG. 6 , the device includes a first processor (processor) 100 and a first memory (memory) 101 storing program instructions, and may also include a first A communication interface (Communication Interface) 102 and a first bus 103 . The first processor 100 , the first communication interface 102 , and the first memory 101 can communicate with each other through the first bus 103 . The first communication interface 102 may be used for information transmission. The first processor 100 may invoke the logic instructions in the first memory 101, and the first processor is configured to execute the network configuration method for an IoT device according to the above embodiment when executing the program instructions.

An embodiment of the present disclosure provides an access device, whose structure is shown in FIG. 7 , the device includes a second processor (processor) 200 and a second memory (memory) 201 storing program instructions, and may also include a second processor (processor) 200 and a second memory (memory) 201 storing program instructions. A communication interface (Communication Interface) 202 and a second bus 203 . The second processor 200 , the second communication interface 202 , and the second memory 201 can communicate with each other through the second bus 203 . The second communication interface 202 may be used for information transmission. The second processor 200 may invoke the logic instructions in the second memory 201, and the second processor is configured to execute the network configuration method for an access device in the foregoing embodiment when executing the program instructions.

In addition, the above-mentioned logic instructions in the first memory 101 and the second memory 201 can be implemented in the form of software functional units and can be respectively stored in computer-readable storage media when sold or used as independent products.

As a computer-readable storage medium, the first memory 101 and the second memory 201 may be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The first memory 101 executes functional applications and data processing by running the software programs, instructions, and modules stored in the first memory 101, that is, implements the method for network distribution for IoT devices in the above method embodiments; the second memory 201 executes the function application and data processing by running the software programs, instructions and modules stored in the second memory 201, that is, implements the network distribution method for the access device in the above method embodiments.

The first memory 101 may include a first storage program area and a first storage data area, wherein the first storage program area may store a first operating system and a first application program required for at least one function; the first storage data area may store The first data created according to the use of the mobile terminal and the like. The second memory 201 may include a second storage program area and a second storage data area, wherein the second storage program area may store a second operating system, a second application program required for at least one function; the second storage data area may store The second data created according to the use of the mobile terminal and the like.

In addition, the first memory 101 and the second memory 201 may include high-speed random access memory, and may also include non-volatile memory.

According to the IoT device and the access device in the above embodiment, the temporary distribution network established between the IoT device and the access device provides one-to-one communication between the access device and the IoT device; After the user's authorization, the formal network distribution can be realized automatically with the access device, so as to solve the complex problem of the Internet of Things device distribution network, and realize the need to avoid entering the formal distribution network information.

An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute the foregoing method for network distribution.

An embodiment of the present disclosure provides a computer program product, the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is made to execute the above-mentioned application for network distribution. Methods.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium, and may also be a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure may be embodied in the form of software products, and the computer software products are stored in a storage medium and include one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to execute all or part of the steps of the methods of the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program codes, and can also be a transient storage medium.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the disclosed embodiments includes the full scope of the claims, along with all available equivalents of the claims. When used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, a first element could be termed a second element, and similarly, a second element could be termed a first element, so long as all occurrences of "the first element" were consistently renamed and all occurrences of "the first element" were named consistently The "second element" can be renamed consistently. The first element and the second element are both elements, but may not be the same element. Also, the terms used in this application are used to describe the embodiments only and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listings. Additionally, when used in this application, the term "comprise" and its variations "comprises" and/or including and/or the like refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. A skilled person can clearly understand that, for the convenience and brevity of description, for the specific working process of the above-described systems, devices and units, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to apparatuses, devices, etc.) may be implemented in other ways. For example, the apparatus embodiments described above are only illustrative. For example, the division of units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integration into another system, or some features can be ignored, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. This embodiment may be implemented by selecting some or all of the units according to actual needs. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executables for implementing the specified logical function(s) instruction. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in different sequences than those disclosed in the description, and sometimes there is no specific relationship between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or actions, or special purpose hardware implemented in combination with computer instructions.

Claims (12)

1.A method for a network distribution, which is used for an Internet of things device, comprises the following steps:

entering a soft access point SoftAp mode;

when the access equipment discovers the Internet of things equipment, the access equipment and the access equipment are subjected to forward temporary network distribution and exchange keys;

after the access equipment disconnects the forward temporary distribution network with the Internet of things equipment, performing reverse temporary distribution network with the access equipment;

and after obtaining the authorization of the user, receiving formal distribution network information with a ciphertext sent by the access equipment, decrypting the formal distribution network information through the secret key, and performing formal distribution network with the access equipment.

2. The method of claim 1, further comprising, after the access device disconnects the forward temporary distribution network: and exiting the SoftAP mode.

3. The method of claim 1 or 2, wherein the forward temporary network distribution with the access device comprises:

transmitting a wireless signal;

and carrying out forward temporary distribution after receiving a temporary distribution network request sent by the access equipment.

4. The method of claim 1 or 2, wherein performing a reverse temporary network distribution with the access device comprises:

and sending a temporary distribution network request to the access equipment to establish a reverse temporary distribution network.

5.A method for a network distribution, for an access device, comprising:

entering an STA/AP hybrid mode, and scanning an Internet of things (AP);

discovering an internet of things device SoftAp, connecting an AP network of the internet of things device, carrying out forward temporary network distribution with the internet of things device, and exchanging a secret key with the internet of things device;

disconnecting a forward temporary distribution network with the Internet of things equipment;

carrying out reverse temporary network distribution with the Internet of things equipment;

after obtaining the user authorization, the Internet of things equipment sends formal distribution network information with a ciphertext to the Internet of things equipment;

and encrypting the formal distribution network information through the secret key and sending the network information to the equipment of the Internet of things, so as to carry out formal distribution network with the equipment of the Internet of things.

6. The method of claim 5, wherein receiving authorization information for the internet of things device comprises:

receiving an authorization page display request; intercepting the display request of the authorization page under the broadcasting state; otherwise, triggering the user side to display an authorization page;

and receiving authorization information sent by the user side for the equipment of the Internet of things.

7. The method of claim 6, wherein the forward temporary network distribution with the access device comprises:

detecting a wireless signal sent by the Internet of things equipment;

and sending a temporary distribution network request to the Internet of things equipment to carry out forward temporary distribution network.

8. The method of claim 7, wherein performing a reverse temporary network distribution with the access device comprises:

and carrying out reverse temporary distribution after receiving a temporary distribution network request sent by the Internet of things equipment.

9. The method of any of claims 5 to 8, further comprising:

and timing the time of the temporary distribution network, and exiting the temporary distribution network when the timing reaches a set threshold value.

10. The method of claim 9, further comprising: and when the Internet of things equipment is accessed, the time of the temporary distribution network is re-timed.

11. An internet of things device comprising a first processor and a first memory storing program instructions, wherein the first processor is configured to perform the method for network distribution of any of claims 1 to 4 when executing the program instructions.

12. An access device comprising a second processor and a second memory storing program instructions, characterized in that the second processor is configured to perform the method for distribution networks according to any of claims 5 to 10 when executing the program instructions.

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