CN108684018A - 5G mMTC aggregation node module construction methods based on block chain - Google Patents

Abstract

The present invention discloses a 5G mMTC convergence node module construction method, which is mainly based on block chain technology to solve the design of the convergence node function module in the 5G mMTC scenario. For the mMTC scenario, micro base stations are deployed at the end of a single macro cell. In the mMTC scenario, multiple converged terminal users of different application scenarios in a single macro cell can form a blockchain, and all user terminals in the same application scenario can form a block. chain. The design and structure of the aggregation terminal mainly includes the authentication mechanism of the user terminal, the encrypted data transmission of the aggregation terminal and the monitoring of the user terminal. Applying the construction scheme of the present invention can effectively increase the number of system user terminal connections of a single macro base station cell in the mMTC application scenario, effectively reduce the connection burden of the macro base station, and effectively ensure the security of data transmission.

Description

Blockchain-based 5G mMTC aggregation node module construction method

technical field

The invention relates to a method for detecting network anomalies, in particular to an abnormal data detection method for densely deployed wireless sensor networks.

Background technique

Massive machine-to-machine communication (mMTC) is one of the three major application scenarios for future fifth-generation (5G) wireless networks. It should support large-scale connectivity of tens of billions of low-power type machine end devices. In order to cope with this challenge, the future mMTC network may group user terminals according to their service types and geographical locations, divide user terminals into different types of user sets, and then apply non-orthogonal multiple access (NOMA) technology to group user terminals. access. Using the method of grouping user terminals, the network will become a two-tier structure. In a user terminal cluster of the same type of service, some MTC or other types of equipment may play the role of a converging terminal to coordinate other machine-type equipment in the cluster to access the network through a double-hop link. In order to cope with the challenge that the serving cell needs to accommodate a large number of MTC users, the convergence terminals in the user grouping solution may exist in a single serving cell in a distributed structure. With the further development of mMTC, the management and maintenance of hundreds of billions of machine devices in the future will bring huge cost pressures to manufacturers, operators and end users.

Since mMTC is similar to the Internet of Things, it naturally has a distributed structure, and the current Internet of Things applications basically aggregate all data flows into a single central control system, although with the development of cloud computing technology and big data technology, Now IoT operators can provide data storage and transmission services through server clusters in the cloud. However, with the emergence of mMTC application scenarios, the number of connected devices will increase rapidly, so the calculation, storage and bandwidth costs of the centralized service structure will also increase to an unaffordable level. The server's database poses a security risk. The explosive growth of the number of connected devices will bring great challenges to the frequency band resources required by the base stations of each cell for data transmission.

In the massive machine-type communication scenario, hundreds of billions of devices will be connected to the network, and the types of data sent by different devices for various applications are also different. 3GPP TS (Technical Specification) 22 368 divides typical industry applications of MTC communication into 7 categories and 35 subcategories; the seven categories include: security monitoring, cargo tracking, smart payment, healthcare, remote monitoring, smart measurement, consumer electronics, etc. If the MTC equipment of each type of application in an area needs to independently access the base station in the area, it will bring a great burden to the base station and cause waste of resources and system conflicts. Fortunately, the mass access of the mMTC system has unique characteristics, namely low power consumption, burst, and short frame length services. Mass access mainly solves the scalable and efficient connection of a large number of devices sending very short data packets. Similar to the routing mechanism of the Internet, the network is too large to allow the entire Internet to have only one level of routing structure. It is impossible to solve the mass access of mMTC with only one level of direct access mode, but a layered access architecture.

Contents of the invention

In view of this, the purpose of the present invention is to propose a blockchain-based 5G mMTC convergence node module construction method to solve the problems of base station capacity increase, resource waste and system conflicts.

The technical solution adopted by the present invention to solve the above problems is: a block chain-based 5G mMTC convergence node module construction method, which is characterized in that it includes the steps:

Macro cells are constructed, and more than three micro base stations are deployed in a distributed manner at the end of a single macro base station.

The user terminal is layered, with the coverage area of the macro cell as the boundary, and the user is grouped according to the service type and geographical location of the user terminal to form several different types of user collections;

The application scenario is generated, and the non-orthogonal multiple access technology is used to connect the user terminals of each user set to a corresponding surrounding micro base station, and coordinate other common end users in the user set to access the network through a double-hop link by converging the end users.

Further, each user set in the user terminal hierarchy includes ordinary end users who only encrypt and transmit data and more than one converging end user who calculates and manages the data of all ordinary end users in this user set.

Furthermore, in the generation of application scenarios, the aggregated end users in each application scenario form the first type of blockchain.

Furthermore, in the generation of application scenarios, the second type of blockchain is composed of ordinary end users in a single application scenario and aggregated end users in this application scenario.

Furthermore, the process of each terminal user accessing the network in the application scenario generation includes the authentication and authentication mechanism of the terminal user, the data encryption transmission of the converged terminal user, and the monitoring of the terminal user.

Furthermore, the authentication and authentication process of the aggregation terminal user includes steps:

Step11: The converging end user sends a registration request to the blockchain network formed by the converging end users, and the blockchain returns a pair of public and private keys to the converging end user; the public key is stored on the blockchain as the converging end user address, the private key is the only key corresponding to decryption;

Step12: Gather end users and all end users on the blockchain to reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys;

Step13: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract;

Step14: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison, all converging end users reach an agreement on the latest contract set within the specified time.

Furthermore, the authentication and authentication process for ordinary end users includes steps:

Step21: Ordinary end users send registration requests to the blockchain network composed of user terminals in a single application scenario, and the blockchain returns a pair of public and private keys to ordinary end users; the public key is used as an ordinary end user in this area. The address on the block chain, the private key is the only key corresponding to decryption;

Step22: Ordinary end users and all end users on the blockchain reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys;

Step23: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract;

Step24: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time.

Furthermore, the data encryption transmission process of the converged end user includes steps:

Step31: The end user at the sending end encrypts the data with its own private key and broadcasts it to the entire blockchain network;

Step32: The end user at the receiving end uses the corresponding public key to decrypt the received data, and checks the legitimacy of the received data information transaction. After passing the inspection, the timestamp is stamped, and the data information is included in a block;

Step33: All converging end users in the entire blockchain network stamp the received data information transactions with time stamps, incorporate them into blocks, and implement a consensus mechanism for the blocks at the same time;

Step34: After the block passes the consensus algorithm process, it is formally incorporated into the blockchain for storage, and all converging end users in the entire blockchain network accept the block, and the manufacture of new blocks is extended based on the blockchain.

Furthermore, the end user monitoring process includes steps:

Step41: The end user must first register as a user of the blockchain and perform authentication at the same time;

Step42: All end users who need to monitor jointly agree on a smart contract on user monitoring, and the participating end users use their own private keys to sign.

Step43: The smart contract is broadcast in the blockchain network through P2P and transmitted to each end user. The signed smart contract will exist in the blockchain network in the form of code according to the content; The converging end users in the block chain save the received smart contract in the memory first, and wait for the consensus time to trigger the consensus and processing of the smart contract;

Step44: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving this block structure, other aggregation nodes will extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, they will send a contract approved by themselves Set to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time; at the same time, once the data information sent by the end user meets the triggering conditions of the smart contract, The blockchain network is automatically processed according to smart contracts.

Compared with the prior art, the present invention has outstanding substantive features and significant progress, and its beneficial effect is reflected in that the system of a single macro base station cell in the mMTC application scenario can be effectively improved by using the above-mentioned construction method of the present invention. The number of user terminal connections can effectively reduce the connection burden of the macro base station, and at the same time effectively ensure the security of data transmission in mMTC, and build a low-cost data transmission bridge between massive smart devices. In addition, by using the decentralized nature of blockchain technology to improve system security and privacy, device monitoring technology also effectively improves the security of smart devices.

Description of drawings

Figure 1 is a frame diagram of mMTC layered access.

Fig. 2 is a schematic diagram of a single macro cell in an mMTC scenario.

Fig. 3 is a flow chart of aggregation terminal user authentication and authentication.

FIG. 4 is a flow chart of authentication and authentication of common terminal users.

Fig. 5 is a schematic diagram of aggregation terminal user data transmission.

Fig. 6 is a flow chart of encrypted transmission of aggregated end-user data.

Figure 7 is a flow chart of end user monitoring.

Detailed ways

The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Blockchain technology is a decentralized, independent of third-party, network data storage, self-verification, management, and encrypted transmission through its own distributed nodes. Blockchain technology can well make up for the aforementioned shortcomings in mMTC application scenarios. Blockchain technology can provide a point-to-point distributed data transmission and storage framework for the mMTC network, reducing the access burden of the cell center base station; at the same time, in a distributed environment, blockchain technology provides encryption protection and self-verification for data Mechanism, but also can provide a reliable fee settlement method. For security, as long as you cannot control 51% of all data nodes, you cannot manipulate and modify network data arbitrarily, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes.

As shown in Figure 1, the network is layered, and the user terminals are grouped according to their business types and geographical locations, and the user terminals are divided into different types of user sets, and then the non-orthogonal multiple access (NOMA) technology is applied to connect the user terminals. Into the micro base station. In a user terminal user set, the converged terminal users coordinate other machine-type devices in the user set to access the network through a double-hop link, and the converged terminal may exist in a single serving cell in a distributed structure. How to increase the number of system user connections in a single macro base station cell in the entire mMTC application scenario and effectively ensure the security of data transmission in mMTC is extremely important. The present invention proposes a 5G mMTC convergence node module design method based on blockchain technology to ensure the security of data transmission in mMTC, and at the same time increase the number of system user connections in a single macro base station cell in mMTC application scenarios.

my country's IMT-2020 promotion group mainly divides 5G application scenarios into: continuous wide-area coverage, high-capacity hotspots, large connections with low power consumption, and low latency and high reliability. The low-frequency resources in 5G are mainly used in application scenarios such as continuous wide coverage, low latency and high reliability, low power consumption and large connection, and the main carrier of low-frequency resources is the macro base station. For high-capacity hot spots deployed in high-frequency scenarios, micro cells are mainly used, that is, micro base stations are used as the basic body. For mMTC, that is, low power consumption and large connection scenarios, more than three micro base stations can also be deployed at the end of a single macro cell to enhance indoor connections, further expand network capacity, and reduce the connection burden of macro base stations. A single macro cell in the mMTC scenario is shown in Figure 2. In this embodiment, the macro cell contains eight micro base stations, that is, eight application scenarios.

In the mMTC application scenario, in a single macro base station cell, according to the layered network described above, the user terminals are grouped according to their service types and geographical locations, and the user terminals are divided into different types of user sets, and then non-orthogonal multiple access (NOMA) is applied ( NOMA) technology connects user terminals to micro base stations. In a user terminal user set, the converged terminal users coordinate other machine-type devices in the user set to access the network through a double-hop link, and the converged terminal may exist in a single serving cell in a distributed structure. Therefore, in a user set, several converging terminal users can be selected, while other terminal users are regarded as common user terminals. In terms of overall function, ordinary end users only encrypt and transmit data, while converging end users calculate and manage the data of ordinary end users, and transmit it to other converging end users as blockchain transactions. End users do not save data, but only serve as a transfer station for data transmission, which plays a role in data security and privacy protection. As shown in Figure 2, it can be seen that in a single macro base station cell in the mMTC scenario, there are two blockchain structures. The first is a blockchain structure composed of converged end users in each application scenario, and the second is a blockchain structure composed of A blockchain structure composed of ordinary end users in a single application scenario and aggregated end users in that scenario.

With regard to the design structure of the convergence terminal user, the present invention mainly proposes the process design of accessing the network: the authentication mechanism of the user terminal, the encrypted data transmission of the convergence terminal and the monitoring of the user terminal.

1. Authentication and authentication mechanism for end users.

Through the design of the user group set of a single macro cell in the mMTC application scenario, it can be known that both ordinary end users and aggregation end users must pass authentication to access the corresponding network before data transmission. Therefore, for a single user set, it is first necessary to complete the authentication and authentication of the converged terminal users to allow them to access the blockchain network; secondly, ordinary end users perform authentication and verification through the converged user terminals to enable them to access the single user collection network.

In the blockchain system, the basis of the ownership verification mechanism is an asymmetric encryption algorithm. In an asymmetric encryption algorithm, there are two keys, a public key and a private key. If the data is encrypted with a public key, it can only be decrypted with the corresponding private key; if the data is encrypted with a private key, it can only be decrypted with the corresponding public key. In an asymmetric encrypted communication system, each user has a pair of public key and private key, but only the public key is open to the outside world, and the private key is only held by the user himself. When communicating, the information source uses the private key to encrypt, and once the sent information reaches the destination, the destination uses the corresponding public key to decrypt it, which ensures that only the receiving parties can view the data. In the blockchain system, there are two basic usage scenarios for asymmetric encryption algorithms:

A) The public key encrypts the transaction information, and the private key decrypts the transaction information. After decryption, the holder of the private key can use the received transaction information.

B) The private key signs the message, and the public key verifies the signature. Information verified by the signature of the public key can be confirmed as sent by the holder of the private key.

Blockchain-based smart contracts encapsulate contract status, trigger conditions, and contract operations. Users who sign the contract agree on the content of the contract and deploy it on the blockchain in the form of code. When external input transactions and events meet the trigger conditions, the smart contract is automatically activated and executed. The user terminal authentication is completed by using blockchain-based asymmetric algorithms and smart contracts, as detailed below.

The authentication and authentication process of the aggregation terminal user is shown in Figure 3, including the steps:

Step11: The converging end user sends a registration request to the blockchain network formed by the converging end users, and the blockchain returns a pair of public and private keys to the converging end user; the public key is stored on the blockchain as the converging end user address, the private key is the only key corresponding to decryption;

Step12: Converge end users and all end users on the blockchain to reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys to ensure the validity of the contract;

Step13: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract;

Step14: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison, all converging end users reach an agreement on the latest contract set within the specified time.

At this point, the authentication and authentication of the converged user terminal is completed, allowing it to access the blockchain network.

Since ordinary user terminals, that is, smart device nodes, only encrypt and transmit data, a small blockchain network is constructed for a single user set. In this network, only aggregation terminals are deployed as verification nodes. That is, the authentication authentication of ordinary users is shown in Figure 4:

Step21: Ordinary end users send registration requests to the blockchain network composed of user terminals in a single application scenario, and the blockchain returns a pair of public and private keys to ordinary end users; the public key is used as an ordinary end user in this area. The address on the block chain, the private key is the only key corresponding to decryption;

Step22: Ordinary end users and all end users on the blockchain reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys to ensure the validity of the contract;

Step23: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract;

Step24: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time.

Applying blockchain technology to end-user authentication does not require third-party equipment, which can effectively reduce authentication costs, improve security, prevent illegal terminal equipment from being disguised, and at the same time prevent terminal equipment from external attacks.

2. About the data encryption transmission of the aggregation terminal.

After the aggregation terminal users and ordinary user terminals are connected to the corresponding blockchain network, the data transmission of the aggregation terminal is shown in Figure 5. As can be seen from the diagram, there are mainly two scenarios for data transmission of converged user terminals;

Scenario 1: In the user terminal set where the aggregation user terminal itself is located, the data transmission between the aggregation user terminal and the common user terminal is performed.

Scenario 2: Information transmission between the aggregation user terminal and other aggregation end users.

For the above two data transmission scenarios, based on blockchain technology, the following process can be used to encrypt and transmit data, and at the same time store the data as a block. The specific data transmission process is shown in Figure 6:

Step31: The end user at the sending end encrypts the data with its own private key and broadcasts it to the entire blockchain network;

Step32: The end user at the receiving end uses the corresponding public key to decrypt the received data, and checks the legitimacy of the received data information transaction. After passing the inspection, the timestamp is stamped, and the data information is included in a block;

Step33: All converging end users in the entire blockchain network stamp the received data information transactions with time stamps, incorporate them into blocks, and implement a consensus mechanism for the blocks at the same time;

Step34: After the block passes the consensus algorithm process, it is formally incorporated into the blockchain for storage, and all converging end users in the entire blockchain network accept the block, and the manufacture of new blocks is extended based on the blockchain.

The consensus mechanism is the basis for nodes in the blockchain to maintain consistent and accurate block data. The existing mainstream consensus algorithms include proof-of-work (PoW), proof-of-stake (PoS), Ripple Consensus Protocol (RCP), etc. Taking PoW as an example, it refers to the formation of new blocks by consuming node computing power. It is a process in which nodes use their own computer hardware to do mathematical calculations for the network to confirm transactions and improve security. Transaction supporters (miners) run the Bitcoin software on their computers to continuously calculate the complex cryptographic problems provided by the software to ensure the progress of the transaction. As a reward for their service, miners receive fees included in the transactions they confirm, as well as newly created bitcoins.

In the above-mentioned data encryption transmission process, an asymmetric encryption algorithm is applied to ensure the security of information sources, further guarantee the security of data transmission, and prevent data from being stolen; at the same time, the decentralization feature of blockchain is introduced to strengthen Security of the entire communication network.

3. Monitoring of user terminals

In these two blockchain structures, the performance of all end users in the blockchain network can be monitored based on the construction of smart contracts. Through this terminal monitoring technology, it is possible to understand the usage status of the terminal equipment in real time. Once an abnormality occurs, an automatic response can be realized immediately through the smart contract. The main process of the construction and execution of blockchain-based smart contracts is as follows: multiple users participate in the formulation of a smart contract; the contract spreads through the P2P network and is stored in the blockchain; the smart contract built by the blockchain is automatically executed. Therefore, the monitoring process of end users is shown in Figure 7:

Step41: The end user must first register as a user of the blockchain and perform authentication at the same time;

Step42: All end users who need to monitor jointly agree on a smart contract on user monitoring, and the participating end users use their own private keys to sign.

Step43: The smart contract is broadcast in the blockchain network through P2P and transmitted to each end user. The signed smart contract will exist in the blockchain network in the form of code according to the content; The converging end users in the block chain save the received smart contract in the memory first, and wait for the consensus time to trigger the consensus and processing of the smart contract;

Step44: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving this block structure, other aggregation nodes will extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, they will send a contract approved by themselves Set to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time; at the same time, once the data information sent by the end user meets the triggering conditions of the smart contract, The blockchain network is automatically processed according to smart contracts.

Through the above monitoring process, once the user terminal sends out abnormal information and meets the trigger conditions of the smart contract, the blockchain network can automatically perform corresponding operations according to the smart contract about user monitoring constructed by the user. Through the above user terminal monitoring, the security of the user equipment can be further ensured, thereby protecting the security of the entire network.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make modifications or equivalent transformations within the scope of the claims, which should be included in the protection scope of the present invention within.

Claims (9)

1. The block chain-based 5G mMTC convergence node module construction method is characterized in that it comprises steps: Macro cells are constructed, and more than three micro base stations are deployed in a distributed manner at the end of a single macro base station. User terminal grouping is bounded by the coverage area of the macro cell, and users are grouped according to the service type and geographic location of the user terminal to form several different types of user collections; The application scenario is generated, and the non-orthogonal multiple access technology is used to connect the user terminals of each user set to a corresponding surrounding micro base station, and coordinate other common end users in the user set to access the network through a double-hop link by converging the end users. 2. The block chain-based 5G mMTC convergence node module construction method according to claim 1, characterized in that: each user set in the user terminal grouping includes ordinary end users who only encrypt and transmit data and more than one pair of local users Aggregated end users who calculate and manage the data of all common end users in the user collection. 3. The block chain-based 5G mMTC aggregation node module construction method according to claim 2, characterized in that: in the generation of application scenarios, the aggregation end users in each application scenario form the first type of block chain. 4. The block chain-based 5G mMTC convergence node module construction method according to claim 2, characterized in that: in the generation of application scenarios, the common terminal users in a single application scenario and the convergence terminal users in this application scenario form the second Two types of blockchains. 5. The block chain-based 5G mMTC aggregation node module construction method according to claim 1, characterized in that: the process of each end user accessing the network in the generation of the application scenario includes the authentication mechanism of the end user and the data aggregation of the end user Encrypted transmission and end-user monitoring. 6. according to the described block chain-based 5G mMTC convergence node module construction method according to claim 5, it is characterized in that the authentication process of converging terminal users comprises the steps: Step11: The converging end user sends a registration request to the blockchain network formed by the converging end users, and the blockchain returns a pair of public and private keys to the converging end user; the public key is stored on the blockchain as the converging end user address, the private key is the only key corresponding to decryption; Step12: Gather end users and all end users on the blockchain to reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys; Step13: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract; Step14: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison, all converging end users reach an agreement on the latest contract set within the specified time. 7. According to claim 5, the 5G mMTC convergence node module construction method based on block chain is characterized in that the authentication process of common terminal users comprises steps: Step21: Ordinary end users send registration requests to the blockchain network composed of user terminals in a single application scenario, and the blockchain returns a pair of public and private keys to ordinary end users; the public key is used as an ordinary end user in this area. The address on the block chain, the private key is the only key corresponding to decryption; Step22: Ordinary end users and all end users on the blockchain reach a smart contract on user authentication and authentication, and the participating end users sign with their respective private keys; Step23: The smart contract spreads to each converging end user in the blockchain network through P2P, and first saves it in the memory of each participating end user, and waits for the consensus time to trigger the consensus and processing of the smart contract; Step24: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, and calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving the block structure, other converging end users extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, send a contract approved by themselves Gather to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time. 8. According to claim 5, the block chain-based 5G mMTC aggregation node module construction method is characterized in that the data encryption transmission process of the aggregation end user comprises the steps: Step31: The end user at the sending end encrypts the data with its own private key and broadcasts it to the entire blockchain network; Step32: The end user at the receiving end uses the corresponding public key to decrypt the received data, and checks the legitimacy of the received data information transaction. After passing the inspection, the timestamp is stamped, and the data information is included in a block; Step33: All converging end users in the entire blockchain network stamp the received data information transactions with time stamps, incorporate them into blocks, and implement a consensus mechanism for the blocks at the same time; Step34: After the block passes the consensus algorithm process, it is formally incorporated into the blockchain for storage, and all converging end users in the entire blockchain network accept the block, and the manufacture of new blocks is extended based on the blockchain. 9. According to claim 5, the 5G mMTC convergence node module construction method based on block chain is characterized in that the monitoring process of end users comprises steps: Step41: The end user must first register as a user of the blockchain and perform authentication at the same time; Step42: All end users who need to monitor jointly agree on a smart contract on user monitoring, and the participating end users use their own private keys to sign; Step43: The smart contract is broadcast in the blockchain network through P2P and transmitted to each end user. The signed smart contract will exist in the blockchain network in the form of code according to the content; The converging end users in the block chain save the received smart contract in the memory first, and wait for the consensus time to trigger the consensus and processing of the smart contract; Step44: When the consensus time comes, each converging end user packs all the smart contracts saved in the latest period into a contract set, calculates the Hash value of this contract set, and then assembles the Hash value of this contract set into a contract set The block structure spreads to the whole network; after receiving this block structure, other aggregation nodes will extract the Hash value of the contract set contained in it, and compare it with the contract set saved by themselves; at the same time, they will send a contract approved by themselves Set to other converging end users; through this multiple rounds of sending and comparison; all converging end users reach an agreement on the latest contract set within the specified time; at the same time, once the data information sent by the end user meets the triggering conditions of the smart contract, The blockchain network is automatically processed according to smart contracts.