First, the network security issues in 4G communication technology

1. Due to the lack of basic facilities for upgrading and updating communication, network security problems. If 4G communication technology is to be truly applied to daily production and life, it is necessary to update the original basic communication facilities. But now the basic wireless devices of 3G communication cover almost all parts of the earth. If we want to transform and update the original communication equipment, it will inevitably consume a lot of manpower and financial resources and a long time.

2.4G network security problems caused by imperfect communication technology. The imperfection of 4G communication technology is mainly manifested in limited capacity and technical defects. The first is limited capacity. Theoretically, the rate that 4G communication can achieve is not less than 20Mbit/s, which is 10 times that of 3G communication. However, it is difficult to expand the capacity of 4G communication system to an ideal state in practice. Secondly, there are technical defects. The research on the technical level of 4G communication shows that 4G communication will be one level higher than the current 3G communication in data transmission. Although it can be realized in theory, it is very difficult to operate in practice. In addition, the network architecture required by the 4G communication system is extremely complex, and it will take a long time to solve this problem.

3. Network security problems caused by ever-changing network attacks. With the gradual popularization of 4G communication system, we will face greater security threats. Compared with the previous network system, the 4G communication system will have greater storage and computing capacity, and the corresponding system will be more likely to infect some mobile terminals. For this reason, the security of 4G communication network has been greatly threatened, such as the threat from mobile phone virus. Generally speaking, mobile phone viruses can be divided into SMS virus, bomb virus, worm virus and Trojan virus.

4.4G network security problems caused by imperfect supporting measures of communication technology. The first is the problem of imperfect service areas. Although users all hope that their terminals can use wireless networks, there are still some problems in achieving smooth Internet access due to the antenna size of terminals or their own power. Secondly, the charges for 4G communication are unreasonable. At present, the charging standard of 3G wireless network is based on the traffic used by users and the practice time. If the fees are still charged according to the current charging standards, it will be difficult for the vast majority of 4G users to bear such high Internet access fees. Therefore, we must carefully formulate a set of relatively reasonable charging standards.

Second, the network security countermeasures of 4G communication technology

1. Construct a scientific and reasonable security structure model of 4G communication system. In this model, all kinds of security problems of network communication system and corresponding solutions should be basically reflected.

2. Change the current password system. In 4G communication system, in the face of different business categories and characteristics, it is best to change the existing cryptographic system, that is, the cryptographic system with the nature of private key, into a mixed cryptographic system, and then create a corresponding authentication security system.

3. Make the security system of 4G communication system transparent. In the future application, the security core of 4G communication system should have relatively independent equipment, which can identify and encrypt the terminal and network independently, and the staff inside the communication system should be able to see the process completely.

4. Application of emerging cryptographic technology. With the continuous development of science and technology, the corresponding terminal's ability to process data will become stronger and stronger. Therefore, appropriate emerging encryption technologies should be used in the 4G communication network system. These emerging cryptographic technologies can greatly enhance the system's ability to resist malicious attacks.

5. Ensure that users can participate in the formulation of security measures. When surfing the Internet through the 4G communication system, users should have the right to set the level of security passwords by themselves, and the corresponding security parameters should be set not only by the system default, but also by the users themselves.

6. Make the 4G communication network and the Internet compatible with each other. The security problems of 4G network system can be roughly divided into mobile security problems and fixed network security problems. In the concept of security, fixed network and computer network are basically the same, so the network problems for computers are basically reflected on the fixed network, and the corresponding network security problems encountered on the fixed network can be solved by computer.

Third, the conclusion

Although a communication company in China has started 4G communication service, we should realize that the development of 4G communication technology is not perfect enough and there are still some defects in many aspects. In the experimental research stage, we should take corresponding protective measures against those threats that may appear or have begun to appear. At the same time, we should also strengthen the existing security measures to ensure the normal operation of the network system. Only in this way can we promote the early application of 4G communication technology to people's daily life and bring greater convenience to people's work and life.

Author: Zhang Wenwen Unit: Zhejiang Branch of China United Network Communication Co., Ltd.

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