D2D power control and interference management method based on Stackelberg game
A power control and interference management technology, applied in power management, wireless communication, electrical components, etc., can solve the problems of traditional cell cross-layer interference communication service quality, traditional cell user communication cross-layer interference, deterioration, etc.
Inactive Publication Date: 2017-09-05
SOUTHEAST UNIV
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Problems solved by technology
However, introducing D2D communication and reusing the spectrum resources of the traditional cell network will inevitably bring serious cross-layer interference to the communication of traditional cell users and affect the communication performance of cell users.
Therefore, for user communications in traditional cells with high priority, it is necessary to implement certain interference management measures for D2D communications. If only spectrum resources are reused without controlling the transmission power of D2D communications, it will The communication of the traditional cell causes severe cross-layer interference and seriously deteriorates the quality of its communication service
Power control is an efficient and common interference management method, but the traditional centralized power control method using optimization technology is not well suited for the non-central processing unit (Central Unit) scattered randomly in the cell. D2D communication network
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[0047] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0048] The present invention regards the Cellular Base Station (CBS) as the leader of the game, which limits the cross-layer interference power to a predetermined threshold range by pricing the frequency-shared interference channel to suppress the transmission power of D2D communication. All D2D links are regarded as followers of the game, which adaptively adjust their transmit power and maximize the utility function of the D2D system by observing the interference pricing factor from the CBS. By introducing the same-layer interference pricing factor, the present invention designs a distributed power control algorithm with limited cooperation between D2D links, whi...
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The invention provides a D2D power control and interference management method based on a Stackelberg game. D2D systems adaptively conduct power control by observing interference pricing factors from a CBS, the CBS updates the interference factors by detecting cross-layer interference from the D2D systems, and the D2D systems and the CBS can iteratively converge to obtain an SE strategy satisfying both the D2D systems and the CBS by means of continuous observation and interference detection. Compared with an existing method, the power control method has the advantages that the speed performance of the D2D systems can be significantly improved; the speed of the D2D systems can be always increased significantly along with increase of the maximum transmission power, and the increase degree is significant compared with the D2D communication speed of an existing algorithm; and the looser cross-layer interference constraining is, the more benefits are obtained by the CBS side by selling the interference.
Description
technical field [0001] The invention belongs to the technical field of wireless heterogeneous network communication, and relates to a power control and cross-layer interference management method. Control and disturbance management methods. Background technique [0002] The future 5G mobile communication system architecture will adopt a multi-layer heterogeneous network architecture with different coverage sizes, different transmission power levels, and a mixture of different wireless access technologies. The heterogeneous network architecture can include different types of small cells (such as: Microcell, Picocell, Femtocell), cognitive radio cell (Cognitve radio cell), relay (Relay), and direct-to-device (D2D), etc. Among them, D2D (Device to Device, D2D) communication can bypass the base station to realize the direct connection and intercommunication between the transmitter and the receiver. This communication method is also a typical single-hop ad hoc communication. If i...
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IPC IPC(8): H04W52/24
CPCH04W52/243
Inventor 衡伟张国栋
Owner SOUTHEAST UNIV