A d2d communication downlink resource sharing method for enhancing cellular network security
A resource sharing and security technology, applied in the field of D2D communication downlink resource sharing to enhance cellular network security, can solve problems such as cellular user interference, reducing cellular communication quality, and preventing CU and D2D links from sharing their spectrum resources.
Active Publication Date: 2020-02-18
SOUTHEAST UNIV
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[0003] As the bottom layer of the cellular network, D2D communication will inevitably introduce interference to the cellular user (CU), which may degrade the quality of cellular communication and prevent the CU from sharing its spectrum resources with the D2D link
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[0037] The communication rate optimization problem of D2D users based on the cellular network is a complex non-convex nonlinear optimization problem. The cellular users targeted by the present invention are downlink single channels. The application of this algorithm can ensure the cellular user’s communication rate under the condition of eavesdroppers. Secure communication, and can quickly optimize and solve the optimal transmit power of cellular users and the optimal transmit power for D2D users and optimal channel matching between cellular users and D2D users The transmission power obtained by using this optimization algorithm can ensure the safe communication rate requirements of cellular users and maximize the sum of communication rates of all D2D users. The present invention will be further described below in conjunction with the accompanying drawings.
[0038] The description of each parameter is as follows:
[0039] ω d,c ∈{0,1} indicates whether cellular user c ...
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The invention discloses a D2D communication downlink resource sharing method enhancing cellular network security. Under the limiting condition of ensuring secure communication of a cellular user, the rate of a D2D user is optimized by jointly optimizing a transmitting power of the cellular user, a transmitting power of a D2D link and cellular channel allocation. When the channel allocation is given, the method delivers an optimal cellular user transmitting power and an optimal D2D link transmitting power, and further provides a cellular channel allocation algorithm. An independent pre-estimated power of each channel is optimized according to the channel information, so as to acquire a joint, optimized power control and channel allocation solution. The method has the advantages of being low in complexity, small in calculating amount and easy to implement.
Description
technical field [0001] The present invention relates to the technical field of D2D communication based on a downlink cellular network, in particular to a D2D communication downlink resource sharing method that enhances the security of a cellular network. Background technique [0002] D2D communication allows two physically close cellular users to communicate directly without going through a base station. Therefore, compared with traditional cellular communication, D2D can achieve higher spectrum utilization and data transmission rate, and lower power consumption. Therefore, D2D communication has been proposed as an important complement to existing and future cellular network systems, mainly for local wireless services [0003] As the bottom layer of cellular networks, D2D communication will inevitably introduce interference to cellular users (CUs), which may degrade cellular communication quality and prevent CUs from sharing their spectrum resources with D2D links. Therefo...
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IPC IPC(8): H04W4/70H04W52/14H04W52/18H04W52/34
CPCH04W52/14H04W52/18H04W52/34
Inventor 王家恒唐启刘智强史锋峰赵春明
Owner SOUTHEAST UNIV