Return-based resource mapping method in network virtualization LTE (Long Term Evolution) superposing D2D

Abstract

The invention discloses a return-based resource mapping method in network virtualization LTE (Long Term Evolution) superposing D2D. The method comprises the steps of I. in a downlink scene, representing the network resource price of an operator by using a power bandwidth product model, associating the power bandwidth product model with cellular subscribers, D2D subscribers and rate, and constructing a utility function capable of effectively reflecting the actual returns of the operator; II. by taking maximization of the utility function as a target, constructing a virtual resource block mapping and optimizing model; and III. and according to the principles of protecting the cellular subscribers in advance and then superposing the D2D subscribers, resolving the model into two discrete optimization subproblems, by means of low signal to noise ratio hypothesis, carrying out simplification by utilizing limit approximation, and finally combining subproblem optimization results and taking the combination as the final mapping scheme. The method mainly solves the problems in the prior art that does not give thought to great network resource costs and calculation for the operator are not considered, the returns of the operator can be improved effectively, and the method is suitable for superposing the network virtualization LTE cellular having D2D communication.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, relates to the technical field of network virtualization, and in particular to a revenue-based resource mapping method under network virtualization LTE superimposed with D2D. Background technique [0002] In recent years, network virtualization technology has attracted extensive attention from industry and academia. Its core idea is to abstract the underlying physical network resources into virtual resources, and then dynamically allocate and share them according to user needs, so as to reduce costs and improve network resource efficiency. the goal of. [0003] On the other hand, with the rapid development of mobile Internet and smart terminals, the network resource efficiency of the existing Long Term Evolution (LTE) system has been difficult to meet the huge demand for wireless data. In response to this problem, some studies have proposed introducing network virtualization techn...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing virtualized resource block mapping methods, such as the overlay D2D communication is not considered, the resource cost consumed by the operator is not involved in the optimization model, etc., the present invention proposes a network virtualization LTE cellular overlay D2D communication based on The resource block mapping method of operator revenue, which uses the power-bandwidth product model to represent the cost of network resources consumed by operators, so as to improve the existing model, thus effectively improving the actual revenue of operators, and the complexity is low

Images