A system and method for optimizing physical layer security communication based on cloud radio access network

Abstract

The present invention discloses a physical layer security communication optimization system and method based on a cloud wireless access network. The present invention is based on a cloud wireless access network architecture, and under system security capacity constraint conditions, the total cost function of the system is minimized and optimized. The total cost function considers both system bandwidth cost and power cost. The present invention uses differential convex optimization technology to solve the minimization optimization problem, and the specific method includes: establishing a secure communication optimization model based on the cloud wireless access network; converting the above optimization model into a standard differential convex optimization problem through zero-order norm approximation processing; Then use the iterative method to decompose the above differential convex optimization problem into a standard convex optimization problem, and use the classic convex optimization numerical method to solve the final optimal solution, which effectively reduces the network overhead and improves the security capacity and security of the network system. safety.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a system and method for optimizing physical layer security communication based on a cloud wireless access network. Background technique [0002] Cloud-based radio access network (Cloud-RAN, C-RAN) is a green radio access network architecture based on centralized processing, cooperative radio and real-time cloud computing architecture. Its goal is to solve the various challenges brought by the rapid development of the mobile Internet to operators, including energy consumption, construction and operation and maintenance costs, and spectrum resources. In the cache-based cloud wireless access network, a cache with a certain capacity is set inside each wireless base station. If the download content requested by the user is in the cache content, the base station will directly send the file to the target user. In this way, the pressure on the backhaul of the cent...

AI Technical Summary

Problems solved by technology

Malicious wireless eavesdropping can lead to the leakage of information (such as call information, identity information, location information, data information, and signaling information between the mobile station and the network control center, etc.), and the leakage of mobile user identity information and location information can lead to mobile User is tracked wirelessly

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