高速通信系统,高速公路通信

⑴ Is blockchain a new hotspot in communications?

Blockchain is not a new hotspot in communications. Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is the core supporting technology of the digital cryptocurrency system represented by Bitcoin. According to the definition of new infrastructure by the National Development and Reform Commission, blockchain is a new technology infrastructure and the Internet of Things is a communication network infrastructure.

⑵ What is blockchain technology? What exactly is blockchain? A chained data structure composed of sequential connections, and a cryptographically guaranteed distributed ledger that cannot be tampered with or forged.

Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, and uses cryptography to ensure data transmission and access. It is a new distributed infrastructure and computing method that uses smart contracts composed of automated script codes to program and operate data securely.

[Infrastructure]

Generally speaking, the blockchain system consists of data layer, network layer, consensus layer, incentive layer, contract layer and application layer composition. Among them, the data layer encapsulates the underlying data blocks and related basic data and algorithms such as data encryption and timestamps; the network layer includes distributed networking mechanisms, data dissemination mechanisms, and data verification mechanisms; the consensus layer mainly encapsulates network nodes Various consensus algorithms; the incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly encapsulates various scripts, algorithms and smart contracts, and is the core of the blockchain The basis of programmable features; the application layer encapsulates various application scenarios and cases of the blockchain. In this model, the chain block structure based on timestamps, the consensus mechanism of distributed nodes, economic incentives based on consensus computing power, and flexible programmable smart contracts are the most representative innovations of blockchain technology.

Extended information:

[Blockchain core technology]

Blockchain mainly solves the trust and security issues of transactions, so it addresses this issue Four technological innovations:

1. Distributed ledger means that transaction accounting is completed by multiple nodes distributed in different places, and each node records a complete account, so they all Can participate in supervising the legality of transactions and can also jointly testify for them.

The uniqueness of blockchain’s distributed storage is mainly reflected in two aspects: First, each node of the blockchain stores complete data according to the block chain structure. Traditional distributed storage generally stores The data is divided into multiple parts for storage according to certain rules. Second, the storage of each node in the blockchain is independent and has equal status. It relies on the consensus mechanism to ensure the consistency of storage, while traditional distributed storage generally synchronizes to other backup nodes through the central node.data.

No node can record ledger data independently, thus avoiding the possibility of a single bookkeeper being controlled or bribed to record false accounts. Also because there are enough accounting nodes, theoretically, unless all nodes are destroyed, the accounts will not be lost, thus ensuring the security of the accounting data.

2. Asymmetric encryption and authorization technology. Transaction information stored on the blockchain is public, but account identity information is highly encrypted and can only be accessed with authorization from the data owner. , thus ensuring data security and personal privacy.

3. The consensus mechanism is how all accounting nodes reach a consensus to determine the validity of a record. This is both a means of identification and a means of preventing tampering. Blockchain proposes four different consensus mechanisms, which are suitable for different application scenarios and strike a balance between efficiency and security.

The consensus mechanism of the blockchain has the characteristics of "the minority obeys the majority" and "everyone is equal". "The minority obeys the majority" does not entirely refer to the number of nodes, but can also be the computing power and the number of shares. Or other characteristic quantities that the computer can compare. "Everyone is equal" means that when a node meets the conditions, all nodes have the right to give priority to the consensus result, which will be directly recognized by other nodes and may eventually become the final consensus result.

4. Smart contracts. Smart contracts are based on these trustworthy and non-tamperable data and can automatically execute some predefined rules and terms. Take insurance as an example. If everyone's information (including medical information and risk occurrence information) is true and trustworthy, it will be easy to automate claims settlement in some standardized insurance products.

In the daily business of insurance companies, although transactions are not as frequent as those in the banking and securities industries, the reliance on trusted data continues unabated. Therefore, the author believes that using blockchain technology from the perspective of data management can effectively help insurance companies improve their risk management capabilities. Specifically speaking, it is mainly divided into risk management of policyholders and risk supervision of insurance companies.

Blockchain-Network

⑶ What is blockchain? If you don’t understand blockchain technically, will there be any operational impact?

Blockchain It is a new application model of electronic information technology such as distributed system data storage, point-to-point communication, consensus mechanism, and data encryption. Its essence is distributed system data information, and with the conclusions it brings, it goes to "blockchain technology". Blockchain applications can be used in many scenarios in life. Let’s take a look at the analysis of blockchain applications!

Technology is a double-edged sword. Just like nuclear technology is a physical technology, blockchain technology is an underlying technology in terms of technology. Nuclear technology can be used as nuclear bombs and nuclear power generation. Similarly, digital currency can be used as a management method for industrial chains and life factors, which may promote more sustainable social development, and may also be used by evildoers as the most convenient means of crime.

Including coins in blockchain technology, if my country adopts legal digital currency, blockchain coins can be decentralized. The blockchain that supports the operation of Bitcoin is blockchain technology, but the alliance chain usually has one or several companies as the core control alliance, which becomes decentralized.

⑷ What is blockchain technology? What exactly is blockchain?

1. The so-called blockchain technology, referred to as BT (Blockchain technology), is also called Distributed ledger technology is an Internet database technology that is characterized by decentralization, openness and transparency, allowing everyone to participate in database records.

Explain in layman’s terms: If we assume that the database is a ledger, reading and writing the database can be regarded as an accounting behavior. The principle of blockchain technology is to find out the accounting information within a period of time. The fastest and best person will keep accounts, and then send this page of information to everyone else in the entire system.

2. Blockchain is a new application model of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of cryptographic methods. Each data block generated by the association contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

(4) High-speed communication technology blockchain extended reading:

The Blockchain Lushi chain system consists of data layer, network layer, consensus layer, It consists of incentive layer, contract layer and application layer. Among them, the data layer encapsulates the underlying data blocks and related basic data and algorithms such as data encryption and timestamps; the network layer includes distributed networking mechanisms, data dissemination mechanisms, and data verification mechanisms; the consensus layer mainly encapsulates network nodes Various consensus algorithms.

The incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly encapsulates various scripts, algorithms and smart contracts, and is the The basis of the chain's programmable features; the application layer encapsulates various application scenarios and cases of the blockchain.

⑸ What is blockchain + instant messaging?

One of the characteristics of blockchain is to achieve irreversibility through distributed ledger technology, while using various technologies, such as ring signatures, zero Knowledge proof, etc. achieve anonymity, protect privacy, etc. Social networks are monopolized by Facebook, and instant messaging is monopolized by centralized products such as WhatsApp. They bring unparalleled communication convenience to users, greatly improve the frequency and efficiency of communication between people, and bring convenience to billions of people around the world.

Through blockchain, communication services can organize the operation of communication services without using the model of a central enterprise. Blockchain has not yetIn order to have a real impact on real life, we cannot rely solely on concepts and hype, but must have products that are truly implemented. What is a truly implemented product is a product that can meet the needs of users. If existing centralized products can meet the needs of users well, then decentralized products will not have sufficient substitution effects and will not be truly practical.

The blockchain protocol layer mainly includes four aspects: network programming, distributed algorithms, encrypted signatures, and data storage technology.
Network programming ability is the main consideration when choosing a programming language, because distributed algorithms are basically business logic implementations and can be done in any language. Among them, the encryption signature technology is direct and simple to use, and the database technology is also mainly at the use level. Only the implementation of point-to-point network and concurrent processing are the difficulties in development. Therefore, people particularly prefer languages ​​that have strong network programming capabilities and simple concurrency processing.

Users receive an initial number of tokens for free. Some of its practical usage scenarios:
1. Encrypted video chat: If multinational users want to have a video chat, encrypted video chat can only be achieved if both parties hold a certain amount of SKM.
2. Encrypted transmission of large-capacity files: The file transferred from one user to another user exceeds the size limit, and the transmitter must hold a certain token to achieve encrypted transmission.
3. Conversation information storage: Conversation records can be saved as long as both parties agree, and both parties need to hold a certain amount of tokens.
4. Re-transmission reminder: If a user sends a file to another user, but he does not want the other user to share it, the user can use a certain token to be notified when the file is transferred again. remind.
5. Secret key unlock file: One user transfers the secret key file to another, and only the other party is allowed to view it. The sending user can use the token to allow the other party to receive fragmented files. The file can only be unlocked by obtaining the secret key from the sender.

The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the only “blockchain technology workstation” approved by the “Smart Learning Workshop 2020- Xueshuo Innovation Workstation” carried out by the School Planning and Construction Development Center of the Ministry of Education of China. "Technical Professional" pilot workstation. The professional base is based on providing students with diversified growth paths, promoting the reform of the training model integrating professional degree research, production, and research, and building an applied and compound talent training system.

⑹ Blockchain has been elevated to a strategic level, and cloud computing + 5G will benefit in the long term (shareholding)

Blockchain has been elevated to a national level, “blockchain should be used as a core technology An important breakthrough for independent innovation and accelerating the development of blockchain technology and industrial innovation." This is undoubtedly a big news for the blockchain concept sector. Blockchain, digital currency and other concept stocks are in the spotlight.

Blockchain isAn organic combination of existing mature technologies, its core technologies mainly include distributed ledgers, consensus mechanisms, smart contracts and cryptography, thereby achieving a chained data structure that is difficult to tamper with.

The physical basis for building a blockchain is a distributed ledger, which is an independent and complete data storage in multiple network nodes. In order to solve the problem of consistency certification of distributed systems, consensus algorithms are introduced at the system level. The most widely used ones include PoW and PoS (mainly used in public chain systems such as Bitcoin, supporting the issuance of tokens, which consumes a lot of computing power), and PBFT ( Mainly used for alliance chains or private chains, no tokens required).

A Tianfeng Securities research report points out that the characteristics of blockchain technology will directly drive the communication industry chain in three aspects:

1) Computing power carries servers and data Central demand;

2) Distributed storage drives the demand for public cloud/private cloud, and blockchain applications will also accelerate the progress of enterprises on the cloud, creating long-term demand for cloud computing, IDC, switches/servers;

3) The 5G network with low latency and high speed is an important way to solve the low transaction speed of blockchain.

Tianfeng Securities pointed out that the application and deployment of blockchain will drive demand in many aspects of the communications industry. Specifically:

1) Under the public chain model , the consensus algorithm requires a large amount of computing power support. Currently, the equipment used in consensus calculation is mainly servers (mining machines), which will generate a large number of server demands and drive the growth of IDC demand.

2) In both public chain and alliance chain modes, blockchain requires a large number of distributed nodes to store ledger information, which will bring about public cloud/private cloud storage requirements. Further boost long-term demand for cloud computing, IDC, and switches/servers.

3) Due to the characteristics of the distributed architecture of the blockchain, factors such as different node computing capabilities, network conditions, etc., the transaction speed of the blockchain is low (7 transactions per second on the Bitcoin network, 15 transactions on the Ethereum network) / second, which is significantly lower than VISA’s peak of 56,000 transactions/second and Alipay’s 256,000 transactions/second). In order to solve transaction congestion and rising costs in blockchain-scale applications, high-performance networks have become an important link. The high speed, low latency characteristics and natural large-scale edge node resources of the 5G network perfectly meet the needs of blockchain technology.

Blockchain technology has been elevated to the level of an important breakthrough for independent innovation, and industrial investment, research and development, and implementation progress are expected to continue to accelerate. Tianfeng Securities believes that as the core carrier of blockchain deployment and operation, the communications industry chain is expected to benefit in the long term. Specifically: