QoS driven D2D security communication resource distributing method

Abstract

The invention discloses a QoS driven D2D security communication resource distributing method. The QoS driven D2D safety communication resource distributing method comprises the steps that a system model of a D2D heterogeneous cellular network with an eavesdroping function is constructed, and a protection frame of QoS and statistical safety is set up for the constructed system model; a security constraint for QoS and D2D users is set up based on the constructed frame, the D2D users are maximized, and the effective volume capacity of the security constraint is limited to honeycomb users, and a resource distribution optimizing problem related to subchannel allocation and power allocation, namely, an optimizing problem of integer constraints and nonconvex problem combinations is set up; the posed optimizing problem is solved through a two-step method, and QoS driven D2D security communication resource distribution is completed. According to the method, a resource and power distributing scheme based on honeycomb statistics QoS guarantee and aiming at D2D communication is studied in a resource reusing mode, the system throughput can be increased through the provided scheme, the complexity is low, and the performance of the method is superior to that of an existing method.

Description

technical field [0001] The invention belongs to a physical layer security transmission technology in a 5G network, and specifically relates to a D2D security transmission scheme based on bee statistics QoS guarantee under multi-channel resource allocation. Background technique [0002] As wireless communication technology continues to evolve, the increased data rate requirements and spectrum requirements for localized wireless services are increasing dramatically. Therefore, D2D communication will be one of the key technologies to improve the performance of 5G wireless communication system. In the D2D heterogeneous cellular network system, D2D users can reuse the spectrum resources of the cellular network for direct communication between short distances without relying on base stations, which can not only improve system capacity, but also improve spectrum efficiency and reduce power consumption. However, in the D2D embedded cellular system, a very important problem is the c...

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Problems solved by technology

However, this metric may not be the best solution to this network information security problem

This is because the D2D co-channel interference and the random characteristics of the wireless channel cannot always guarantee a positive confidentiality capacity, resulting in a decrease in the D2D transmission rate.

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