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A method for optimizing secondary link throughput of uav communication network based on cr

A communication network and optimization method technology, applied in wireless communication, network planning, advanced technology and other directions, can solve the problems of scarcity of spectrum resources, scarce spectrum resources, spectrum efficiency, and low spectrum efficiency of UAV communication network

Active Publication Date: 2022-07-12
AIR FORCE UNIV PLA
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Problems solved by technology

[0011] Aiming at the current situation of scarce spectrum resources and low spectrum efficiency of UAV communication network, the present invention provides a CR-based UAV (unmanned aerial vehicle) communication network secondary link throughput optimization method, by designing a dynamic spectrum access scheme and Optimize the throughput under the unit bandwidth of the secondary link, and solve the problems of scarce spectrum resources and low spectrum efficiency in the UAV communication network

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  • A method for optimizing secondary link throughput of uav communication network based on cr
  • A method for optimizing secondary link throughput of uav communication network based on cr
  • A method for optimizing secondary link throughput of uav communication network based on cr

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Embodiment

[0077] The present invention proposes a CR-based UAV communication network secondary link throughput optimization method. The Cognitive UAV network model under the PU, jointly optimizes the system perception parameters, and improves the system spectrum efficiency under the premise of ensuring the QoS of the PU.

[0078] Establish a cognitive UAV communication network model under the A2G channel, such as image 3 As shown, the cognitive UAV network consists of base station (BS) and UAV, the distance between PU and BS is R P , the UAV flies on a circular orbit centered on BS at a uniform flight speed v, and the orbit radius is R S , the flight altitude is H. Taking the BS as the center, the UAV performs periodic circular motion. One flight cycle includes one frame of flight time slots. The flight time slot is composed of a sensing time slot and a transmission time slot. UAV utilizes the PU spectrum resources and transmits data in the transmission slot only when it detects tha...

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Abstract

The invention belongs to the technical field of unmanned aerial vehicle communication processing, and discloses a CR-based UAV communication network secondary link throughput optimization method. The unmanned aerial vehicle performs energy detection and local decision-making within a single micro-sensing arc; The sensing results of each micro-sensing arc are respectively transmitted to the fusion center; the fusion center uses the OR criterion to make global decisions on all sensing results; the cognitive UAV network makes dynamic spectrum access decisions based on the sensing results of the fusion center; Perceives arcs and arcs to optimize throughput when the drone is operating normally. In the case of serious channel fading of UAV, the present invention has better effects for ensuring quality of service (QoS) and improving UAV throughput. The invention takes the radian value of the flying angle of the UAV's circular motion as the object, and skillfully analyzes the spectrum sensing performance and the spectrum efficiency optimization scheme during the UAV's periodic motion.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle communication processing, and in particular relates to a CR-based UAV communication network secondary link throughput optimization method. Background technique [0002] Currently, drones typically use unlicensed frequency bands (such as IEEE S-Band, IEEE L-Band, Industrial Scientific and Medical (ISM) Band) and use static spectrum allocation policies. In recent years, the rapid development of 5G network, D2D (Device-to-Device) communication and the Internet of Things (IoT) has resulted in a sharp increase in spectrum demand. Due to these factors, the working frequency bands of UAVs will become overcrowded, and UAVs will face a shortage of spectrum. Cognitive Radio (CR) solves the waste of spectrum occupation by opportunistically accessing licensed frequency bands, and adopts advanced communication methods to improve spectrum utilization efficiency. As a new intelligent wireless c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W72/04H04W72/08H04B17/382H04W16/14H04W72/54
CPCH04B7/18506H04W72/0453H04B17/382H04W16/14H04W72/543H04W72/542Y02D30/70
Inventor 张宏伟达新宇胡航倪磊潘钰
Owner AIR FORCE UNIV PLA
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