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Low earth orbit satellite Internet of Things service model based on attractor selection algorithm and multi-satellite load balancing algorithm

A technology for selecting algorithms and low-orbit satellites, applied in the field of satellite communications, which can solve the problems of high peak-to-average ratio of satellite services and uneven satellite busy-idle ratio, reduce the peak-to-average ratio of services, improve system resource utilization, and improve random access. performance effect

Active Publication Date: 2021-06-25
NANJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

The simulation results show that the peak-to-average ratio of satellite services is very high, indicating that different satellites are unevenly busy due to differences in the geographical environment of the coverage area.

Method used

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  • Low earth orbit satellite Internet of Things service model based on attractor selection algorithm and multi-satellite load balancing algorithm
  • Low earth orbit satellite Internet of Things service model based on attractor selection algorithm and multi-satellite load balancing algorithm
  • Low earth orbit satellite Internet of Things service model based on attractor selection algorithm and multi-satellite load balancing algorithm

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Embodiment Construction

[0082] The present invention will be further described below in conjunction with the accompanying drawings.

[0083] The low-orbit satellite Internet of Things business model and multi-satellite load balancing algorithm based on the attractor selection algorithm disclosed in the present invention are mainly used for improving such as figure 1 The shown multi-satellite coverage low-orbit satellite IoT scenario is the peak-to-average ratio of satellite services, on-board resource utilization, and random access performance of terminal nodes. against figure 1 As shown in the multi-satellite coverage low-orbit satellite IoT scenario, due to the high dynamics of low-orbit satellites and changes in the geographic environment of the beam coverage area, the traffic volume of the access satellites presents inhomogeneity in the two dimensions of space and time. Traditional based on The distance-based access strategy has the following problems for some event-driven bursty IoT services: ...

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Abstract

The invention discloses a low earth orbit satellite Internet of Things service model based on an attractor selection algorithm and a multi-satellite load balancing algorithm. according to the business model, a method for determining terminal deployment density by grid division is adopted in the spatial dimension, a random position generation method is adopted, and specific coordinates of a terminal are determined by constructing a terminal deployment density matrix, utilizing the characteristics of an edge cumulative probability distribution function pair and using mathematical methods such as one-dimensional inverse change sampling and affine transformation; and in the time dimension, event-driven services are researched, and burst traffic characteristics in a short time range are accurately captured. In the multi-satellite load balancing algorithm, the network activity and the network state of each satellite are calculated in real time to guide the Internet of Things terminal to carry out dynamic self-adaptive satellite decision. Therefore, the method is more suitable for high-dynamic scenes such as the satellite Internet of Things, and can enable the terminal to make adaptive decision adjustment and improve the random access performance when the external access scale changes.

Description

technical field [0001] The invention relates to the technical field of satellite communication, and mainly relates to a low-orbit satellite Internet of Things business model and a multi-satellite load balancing algorithm based on an attractor selection algorithm. Background technique [0002] The Internet of Things refers to connecting all items in the world with various networks through information sensing equipment and various network access technologies in accordance with standard communication protocols and consistent network architecture for information communication, data exchange, and interoperability. and management, so as to realize an interconnected and interoperable basic network for intelligent identification, positioning, tracking, monitoring and management of items. With the current large-scale coverage of various wireless networks, IoT applications have gradually penetrated into all fields of human activities, and sensor devices can be connected to all-weather...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W28/08H04W74/08H04L12/24G06N3/00G16Y10/75
CPCH04B7/18578H04B7/18586H04B7/18597H04W74/0833H04L41/145G06N3/002G16Y10/75H04W28/082Y02D30/70
Inventor 洪涛程一凡张更新
Owner NANJING UNIV OF POSTS & TELECOMM
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