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ultra-dense millimeter wave D2D communication interference management method

A management method and communication interference technology, applied in wireless communication, machine-to-machine/machine-type communication services, sustainable communication technology, etc., can solve the problem that beam width selection and resource allocation cannot be taken into account at the same time

Active Publication Date: 2019-05-14
NORTHWEST UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that beamwidth selection and resource allocation cannot be managed simultaneously in terms of interference, and to provide an ultra-dense millimeter-wave D2D communication interference management method based on joint beamwidth selection and resource optimization to solve the problem. The above shortcomings are to further increase the number of parallel transmissions of millimeter wave D2D communication in ultra-dense scenarios, effectively improving the system and speed

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[0069] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0070] Refer to attached Figure 1-2 , an ultra-dense millimeter wave D2D communication interference management method, comprising the following steps,

[0071] Step 1: System modeling and interference management problem modeling

[0072] A. System Modeling

[0073] Such as figure 1 , two mobile devices communicate directly to form a D2D communication pair. Assume Represents the collection of all D2D communication pairs. To simulate ultra-dense scenarios, all D2D links are assumed to be randomly distributed in a small circular area. The D2D communication link transmits on the mmWave freq...

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Abstract

The invention relates to an ultra-dense millimeter wave D2D communication interference management method. The method mainly solves the problem that beam width selection and resource allocation cannotbe considered at the same time in the aspect of interference management in the prior art. The invention provides an ultra-dense millimeter wave D2D communication interference management method based on combined beam width selection and resource optimization. The ultra-dense millimeter wave D2D communication interference management method comprises the following steps that firstly, system modelingand interference management problem modeling are conducted on a millimeter wave D2D communication system; Secondly, beam width selection is conducted through particle swarm optimization, and an optimal beam width vector is obtained; Finally, optimal joint power and time slot allocation vectors are obtained through resource optimization based on convex optimization approximation; According to the interference management method based on combined beam width selection and resource optimization, interference can be effectively managed, the number of parallel transmission links is increased, and a higher system and a higher rate are obtained.

Description

technical field [0001] The present invention relates to the field of millimeter wave communication, specifically for ultra-dense millimeter wave D2D communication systems, an interference management method based on joint beam width selection and resource optimization is designed to effectively manage interference problems between different millimeter wave D2D communication links, so that The ultra-dense millimeter wave D2D communication system and rate have been greatly improved. Background technique [0002] Aiming at the problem of interference management in the millimeter wave D2D communication system, an interference management method based on transmission scheduling or resource allocation is proposed in the prior art to suppress interference in the millimeter wave communication system and increase the number of concurrent transmission links. However, these schemes all assume fixed antenna beamwidths and do not consider the impact of beamwidth selection on concurrent tra...

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Application Information

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IPC IPC(8): H04W4/70H04W72/08H04L12/24
CPCY02D30/70
Inventor 李小亚贺晨张汉卿曹正文彭进业郑杰祁媚张明慧
Owner NORTHWEST UNIV
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