CN111885586B - Blockchain-based roaming management method and network access node - Google Patents

Abstract

This disclosure proposes a blockchain-based roaming management method and a network access node. The method includes: receiving an access request message sent by a network element on the base station side, obtaining an International Mobile Subscriber Identification Code carried in it, and requesting access The message is sent to the network element on the base station side when the terminal requests to access the visited network; the pre-stored current user information of the terminal is obtained from the blockchain account book according to the International Mobile Subscriber Identity Code, and the blockchain includes the information of the visited network. Each visited access node and each home access node of the home network; if it is determined that the terminal is allowed to access according to the current user information of the terminal, the access permission message is sent to the network element on the base station side, so that the network element on the base station side The terminal is connected to the visited network according to the access permission message. The visited network does not need to frequently obtain the user's contract information and other data from the home network, and uses blockchain encryption technology to protect the user's contract information and other data, which is more secure and convenient.

Description

Blockchain-based roaming management method and network access node

technical field

The disclosure belongs to the field of communication technologies, and in particular relates to a blockchain-based roaming management method and network access nodes.

Background technique

When a terminal user roams in a visited location or a different network, the roaming service of the mobile terminal is managed and monitored by the visited network. It is necessary to frequently obtain data such as user subscription information from the home network, and security issues such as tampering cannot be avoided during data storage and transmission.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the present disclosure provides a blockchain-based roaming management method and a network access node.

As a first aspect of the present disclosure, a blockchain-based roaming management method is provided, including:

receiving an access request message sent by a network element at the base station side, and acquiring an International Mobile Subscriber Identity code carried therein, where the access request message is sent to the network element at the base station side when the terminal requests to access a visited network;

According to the international mobile subscriber identification code, the pre-stored current user information of the terminal is obtained from the blockchain ledger, and the blockchain includes each visited access node of the visited network and each home access node of the home network. node;

If it is determined according to the current user information of the terminal that the terminal is allowed to access, then send an access allowing message to the network element on the base station side, so that the network element on the base station side sends the access allowing message to the The terminal accesses the visited network.

Preferably, the method also includes:

After the network element at the base station side connects the terminal to the visited network, acquire the behavior of the terminal user by monitoring the network element;

According to the user behavior of the terminal and the current user information of the terminal, it is judged whether to terminate the access of the terminal to the visited network, and the judgment result is sent to the network element at the base station side, so that the network element at the base station side sends the network element at the base station side The judgment result is sent to the terminal.

Preferably, the determining to allow the terminal to access according to the current user information of the terminal includes:

Obtaining user subscription information in the current user information of the terminal;

Obtain roaming agreement information pre-stored in the blockchain ledger;

If the user subscription information matches the roaming agreement information, determine that the terminal is allowed to access.

Preferably, the method also includes:

Acquire current user information of the terminal, where the current user information of the terminal is updated user information of the terminal;

Generate a new block according to the current user information of the terminal and the current time stamp, and broadcast the new block in the block chain.

Preferably, the method also includes:

Obtain roaming agreement information;

Generate a new block according to the roaming agreement information, and broadcast the new block in the block chain.

As a second aspect of the present disclosure, a network access node is provided, including:

A receiving module, configured to receive an access request message sent by a base station side network element;

A first acquiring module, configured to acquire the International Mobile Subscriber Identity code carried in the access request message, which is sent to the network element at the base station side when the terminal requests access to the visited network;

The second obtaining module is used to obtain the pre-stored current user information of the terminal from the block chain account book according to the international mobile subscriber identification code, and the block chain includes each visiting point access node and home of the visiting point network Each home access node of the network;

A sending module, configured to send an access permission message to the network element on the base station side if it is determined that the terminal is allowed to access according to the current user information of the terminal, so that the network element on the base station side can The incoming message connects the terminal to the visited network.

Preferably, it also includes:

The third acquiring module is configured to acquire the behavior of the terminal user by monitoring the network element after the network element at the base station side connects the terminal to the visited network;

A judging module, configured to judge whether to terminate the terminal's access to the visited network according to the user behavior of the terminal and the current user information of the terminal;

The sending module is further configured to send the judgment result to the base station side network element, so that the base station side network element sends the judgment result to the terminal.

Preferably, in the sending module, according to the current user information of the terminal, it is determined that the terminal is allowed to access, specifically for:

Obtaining user subscription information in the current user information of the terminal;

Obtain roaming agreement information pre-stored in the blockchain ledger;

If the user subscription information matches the roaming agreement information, determine that the terminal is allowed to access.

Preferably, it also includes:

A fourth acquiring module, configured to acquire current user information of the terminal, where the current user information of the terminal is updated user information of the terminal;

The first broadcast module is configured to generate a new block according to the current user information of the terminal and the current time stamp, and broadcast the new block in the block chain.

Preferably, it also includes:

A fifth acquiring module, configured to acquire roaming agreement information;

The second broadcast module is configured to generate a new block according to the roaming agreement information, and broadcast the new block in the block chain.

In the embodiment of the present disclosure, data such as the user's subscription information is no longer stored in the home network register, but is pre-stored in the blockchain ledger of the blockchain constructed by the visited access node and the home access node. The user's subscription information and other data may change at any time, and the visited network does not need to frequently obtain the user's subscription information and other data from the home network. At the same time, on the basis of mobile communication network and blockchain technology, blockchain encryption technology is used to protect data such as user signing information, and a more secure and convenient roaming management method under the mobile communication network is constructed.

Description of drawings

FIG. 1 is a flow chart of a blockchain-based roaming management method provided by an embodiment of the present disclosure;

FIG. 2 is another flow chart of a blockchain-based roaming management method provided by an embodiment of the present disclosure;

FIG. 3 is another flow chart of a blockchain-based roaming management method provided by an embodiment of the present disclosure;

FIG. 4 is another flow chart of a blockchain-based roaming management method provided by an embodiment of the present disclosure;

Fig. 5 is a schematic structural diagram of a network access node provided by an embodiment of the present disclosure.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

The present disclosure provides a blockchain-based roaming management method and a network access node. The following will be described in detail one by one with reference to the drawings of the embodiments provided in the present disclosure.

In the initial phase, the blockchain is pre-built. The block chain includes each visited access node of the visited network and each home access node of the home network. The user's terminal activates the roaming service and signs a roaming service agreement. Both the visited access node and the home access node approve the roaming service agreement.

FIG. 1 shows a flow chart of a blockchain-based roaming management method provided by an embodiment of the present disclosure. The network access node includes a visited access node, and the blockchain-based roaming management method can be applied to the visited access node. As shown in FIG. 1 , the blockchain-based roaming management method provided by this embodiment includes the following steps.

Step 101, receiving an access request message sent by a base station side network element.

Wherein, the access request message is sent to the base station side network element when the terminal requests to access the visited network.

In this step, when the user is roaming in the visited place, the terminal sends an access request message to the base station side network element, and the base station side network element forwards the request access message to the visited place access node, and the visited place access node receives the request Access messages.

Step 102, acquire the International Mobile Subscriber Identity code carried in the access request message.

In this step, the visited access node acquires the International Mobile Subscriber Identity code carried in the access request message. Wherein, the access request message includes, in addition to the IMSI, data required for accessing the visited network, such as the IMSI and the terminal ID.

Step 103, obtain the pre-stored current user information of the terminal from the blockchain ledger according to the International Mobile Subscriber Identification Code.

In this step, the visited access node obtains the pre-stored current user information of the terminal from the blockchain ledger according to the International Mobile Subscriber Identity (IMSI). The current user information of the terminal includes user-related information such as user subscription information, credit limit, roaming charging policy, and balance status. Wherein, the user subscription information refers to data related to the roaming agreement signed by the user.

It should be noted that after the terminal activates the roaming service and signs the roaming service agreement, the home access node saves the user information of the terminal in the blockchain ledger. The terminal can also update the user information, and the updated user information of the terminal can be added to the current timestamp to generate a new block and saved in the blockchain ledger through the attributable access node. The current user information of the terminal saved in the blockchain ledger is encrypted data. The visited access node and the home access node can share the trusted and mutually recognized terminal current user information, and jointly manage and monitor the roaming service of the terminal.

Step 104: If it is determined that the terminal is allowed to access according to the current user information of the terminal, then send an access allowing message to the network element on the base station side, so that the network element on the base station side can access the terminal to the visited network according to the access allowing message.

In this step, if the visited access node determines that the terminal is allowed to access according to the current user information of the terminal, that is, it determines that the access request message is correct and the information carried in the access request message is reasonable, then the access will be allowed. The message is sent to the network element on the base station side, so that the network element on the base station side can access the terminal to the visited network according to the access permission message.

It should be noted that if the visited access node determines that the terminal is not allowed to access according to the current user information of the terminal, that is, it determines that the access request message is incorrect, and the information carried in the access request message contains unreasonable information, Then, the access rejection message is returned to the base station side network element, and the base station side network element refuses the terminal to access the visited network according to the access rejection message. The terminal that is denied access to the network can send an access request message to the network element on the base station side again, and the network element on the base station side forwards the access request message to the visited access node, and the visited access node obtains the latest terminal from the blockchain ledger The current user information, and judge again whether to allow the terminal to access the visited network.

In the embodiment of the present disclosure, data such as the user's subscription information is no longer stored in the home network register, but is pre-stored in the blockchain ledger of the blockchain constructed by the visited access node and the home access node. The user's subscription information and other data may change at any time, and the visited network does not need to frequently obtain the user's subscription information and other data from the home network. At the same time, on the basis of mobile communication network and blockchain technology, blockchain encryption technology is used to protect data such as user signing information, and a more secure and convenient roaming management method under the mobile communication network is constructed.

Fig. 2 shows another flow chart of the blockchain-based roaming management method provided by an embodiment of the present disclosure. Further, as shown in Figure 2, the method also includes:

Step 201, after the network element at the base station side connects the terminal to the visited network, acquire the behavior of the terminal user by monitoring the network element.

In this step, after the network element at the base station side connects the terminal to the visited network, the visited access node monitors the behavior of the terminal user through the related monitoring network elements of the visited network, and stores the behavior of the terminal user in blocks according to the service type in the block of the chain. End user behaviors include calling, sending text messages and other behaviors that will generate charges.

Step 202, judge whether to terminate the terminal's access to the visited network according to the terminal user behavior and the current user information of the terminal, and send the judgment result to the network element on the base station side, so that the network element on the base station side can send the judgment result to the terminal.

In this step, the visited access node judges whether to terminate the terminal’s access to the visited network based on the terminal user’s behavior and the latest current user information of the terminal. Terminate the terminal's access to the visited network. At the same time, the visited access node sends the judgment result to the network element at the base station side, so that the network element at the base station side feeds back the judgment result to the terminal.

Further, in the step 104, the determining to allow terminal access according to the current user information of the terminal includes: obtaining the user subscription information in the current user information of the terminal; obtaining roaming agreement information pre-stored in the blockchain ledger; If the user subscription information matches the roaming agreement information, it is determined that the terminal is allowed to access.

In the above steps, if the visited access node judges that the user subscription information in the current user information of the terminal matches the roaming agreement information pre-stored in the blockchain ledger, that is, the user signed up for the roaming service in the roaming agreement information protocol, the visited access node determines to allow terminal access.

It should be noted that the visited access node also needs to judge whether the current user information of the terminal other than the user subscription information is reasonable (for example, judge whether the user is in arrears according to the balance status, and the terminal cannot be allowed to access if the arrears are in arrears) , if both are reasonable, it is determined that the access request message is correct, and the terminal is allowed to access.

Fig. 3 shows another flow chart of the blockchain-based roaming management method provided by an embodiment of the present disclosure. Further, the network access node includes a home access node, and the blockchain-based roaming management method can be applied to the home access node. As shown in Figure 3, the method also includes:

Step 301, acquiring current user information of a terminal.

Wherein, the current user information of the terminal is updated user information of the terminal. Before the visited access node receives the access request message sent by the network element on the base station side, after the user signs the roaming service agreement, if the user updates the user information, the home access node obtains the updated user information of the terminal, that is, obtains the update Subsequent user subscription information, credit limit, roaming charging policy and balance status and other information related to the user.

It should be noted that when the network element on the base station side refuses the terminal to access the visited network, the terminal can update the user information of the terminal. The element sends a Request Access message.

Step 302, generate a new block according to the current user information of the terminal and the current time stamp, and broadcast the new block in the block chain.

In this step, the home access node generates a new block according to the updated user information of the terminal plus the current time stamp, and broadcasts the new block in the block chain to save the information in the new block in the block chain ledger. content. Here, the stored current user information of the terminal is encrypted information.

Fig. 4 shows another flow chart of the blockchain-based roaming management method provided by an embodiment of the present disclosure. Furthermore, the blockchain-based roaming management method can be applied to the home access node. The method also includes:

Step 401, acquire roaming agreement information.

Before the visited access node receives the access request message sent by the network element on the base station side, the home access node and the visited access node pre-authenticate the roaming agreement information, that is, authenticate the same roaming service agreement, and the specific authentication process It is not limited here. The home access node in the blockchain obtains the authenticated roaming agreement information.

Step 401, generate a new block according to roaming agreement information, and broadcast the new block in the block chain.

In this step, the home access node generates a new block according to the roaming agreement information, broadcasts the new block in the block chain, and saves the content in the new block in the block chain ledger.

Fig. 5 shows a schematic structural diagram of a network access node provided by an embodiment of the present disclosure. Based on the same technical concept as the embodiment corresponding to FIG. 1 , as shown in FIG. 5 , the network access node provided by the embodiment of the present disclosure includes the following modules.

The receiving module 11 is configured to receive an access request message sent by a base station side network element.

The first acquiring module 12 is configured to acquire the International Mobile Subscriber Identity code carried in the access request message, which is sent to the base station side network element when the terminal requests to access the visited network.

The second obtaining module 13 is used to obtain the pre-stored current user information of the terminal from the block chain account book according to the international mobile subscriber identification code, and the block chain includes each visiting point access node and the attribution of the visiting point network Each home access node of the local network.

The sending module 14 is configured to send an access permission message to the network element on the base station side if it is determined that the terminal is allowed to access according to the current user information of the terminal, so that the network element on the base station side can The access message connects the terminal to the visited network.

Preferably, it also includes:

The third acquiring module is configured to acquire the behavior of the terminal user by monitoring the network element after the network element at the base station side connects the terminal to the visited network.

A judging module, configured to judge whether to terminate the terminal's access to the visited network according to the user behavior of the terminal and the current user information of the terminal.

The sending module is further configured to send the judgment result to the base station side network element, so that the base station side network element sends the judgment result to the terminal.

Preferably, in the sending module, according to the current user information of the terminal, it is determined that the terminal is allowed to access, specifically for:

Obtain the user subscription information in the current user information of the terminal.

Obtain roaming agreement information pre-stored in the blockchain ledger.

If the user subscription information matches the roaming agreement information, determine that the terminal is allowed to access.

Preferably, it also includes:

The fourth obtaining module is configured to obtain current user information of the terminal, where the current user information of the terminal is updated user information of the terminal.

The first broadcast module is configured to generate a new block according to the current user information of the terminal and the current time stamp, and broadcast the new block in the block chain.

Preferably, it also includes:

A fifth acquiring module, configured to acquire roaming agreement information.

The second broadcast module is configured to generate a new block according to the roaming agreement information, and broadcast the new block in the block chain.

It can be understood that, the above implementations are only exemplary implementations adopted to illustrate the principle of the present disclosure, but the present disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims (8)

1. A roaming management method based on a block chain is characterized by comprising the following steps:

receiving an access request message sent by a base station side network element, and acquiring an international mobile subscriber identity carried in the access request message, wherein the access request message is sent to the base station side network element when a terminal requests to access a visited network;

acquiring pre-stored current user information of the terminal from a blockchain account book according to the international mobile subscriber identity, wherein the blockchain comprises each visited access node of a visited network and each home access node of a home network;

if the terminal is allowed to access according to the current user information of the terminal, an access allowing message is sent to the base station side network element, so that the base station side network element can access the terminal to the visited network according to the access allowing message;

the determining to allow the terminal to access according to the current user information of the terminal includes:

acquiring user subscription information in the current user information of the terminal;

acquiring roaming agreement information prestored in a block chain account book;

and if the user subscription information is matched with the roaming agreement information, determining that the terminal is allowed to access.

2. The method for block chain based roaming management as claimed in claim 1, wherein the method further comprises:

after the base station side network element accesses the terminal to the visited network, acquiring the terminal user behavior through a monitoring network element;

and judging whether to terminate the access of the terminal to the visited network according to the terminal user behavior and the current user information of the terminal, and sending a judgment result to the base station side network element so that the base station side network element sends the judgment result to the terminal.

3. The method for block chain based roaming management as claimed in claim 1, wherein the method further comprises:

acquiring current user information of a terminal, wherein the current user information of the terminal is updated user information of the terminal;

and generating a new block according to the current user information and the current timestamp of the terminal, and broadcasting the new block in the block chain.

4. The method for block chain based roaming management as claimed in claim 1, wherein the method further comprises:

acquiring roaming agreement information;

and generating a new block according to the roaming agreement information, and broadcasting the new block in a block chain.

5. A network access node, comprising:

the receiving module is used for receiving a request access message sent by a network element at a base station side;

a first obtaining module, configured to obtain an international mobile subscriber identity carried in the request access message, where the request access message is sent to the base station side network element when a terminal requests to access a visited network;

a second obtaining module, configured to obtain, according to the international mobile subscriber identity, pre-stored current user information of the terminal from a blockchain account book, where the blockchain includes each visited access node of the visited network and each home access node of the home network;

a sending module, configured to send an access permission message to the base station side network element if it is determined that the terminal is permitted to access according to the current user information of the terminal, so that the base station side network element accesses the terminal to a visited network according to the access permission message;

the sending module determines, according to the current user information of the terminal, to allow the terminal to access, and is specifically configured to: acquiring user subscription information in the current user information of the terminal; acquiring roaming agreement information prestored in a block chain account book; and if the user subscription information is matched with the roaming agreement information, determining that the terminal is allowed to access.

6. The network access node of claim 5, further comprising:

a third obtaining module, configured to obtain a terminal user behavior through a monitoring network element after the base station-side network element accesses the terminal to the visited network;

the judging module is used for judging whether to terminate the access of the terminal to the visited place network according to the terminal user behavior and the current user information of the terminal;

the sending module is further configured to send the determination result to the base station side network element, so that the base station side network element sends the determination result to the terminal.

7. The network access node of claim 5, further comprising:

a fourth obtaining module, configured to obtain current user information of the terminal, where the current user information of the terminal is updated user information of the terminal;

and the first broadcasting module is used for generating a new block according to the current user information and the current timestamp of the terminal and broadcasting the new block in the block chain.

8. The network access node of claim 5, further comprising:

a fifth obtaining module, configured to obtain roaming agreement information;

and the second broadcasting module is used for generating a new block according to the roaming protocol information and broadcasting the new block in a block chain.

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