Hybrid random access method and device in satellite Internet of Things scene

A technology of random access and Internet of Things, applied in the field of satellite Internet of Things, can solve problems such as throughput decline, and achieve the effect of improving throughput, improvement and packet loss rate

Pending Publication Date: 2022-08-05
NANJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of medium and high loads, the throughput of the contention-based multiple access protocol system will decline significantly or even sharply.

Method used

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  • Hybrid random access method and device in satellite Internet of Things scene
  • Hybrid random access method and device in satellite Internet of Things scene
  • Hybrid random access method and device in satellite Internet of Things scene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A hybrid random access method in a satellite Internet of Things scenario, comprising:

[0049] Each terminal of the transmitting end receives the synchronization signal and completes the frame and time slot synchronization;

[0050] According to the transmission requirements of each terminal itself, it is determined that each terminal is in a non-spread spectrum or a spread spectrum mode, wherein the terminal at the transmitting end includes a non-spread spectrum terminal and a spread spectrum terminal;

[0051] Perform carrier modulation on the non-spread spectrum terminal signal to obtain a non-spread spectrum data packet, and firstly spread the spectrum terminal signal and then modulate to obtain a spread spectrum data packet;

[0052] The non-spread spectrum terminal selects the channel and time slot to randomly send the modulated non-spread spectrum data packet, and the spread spectrum terminal selects the channel and time slot to randomly send the modulated spread...

Embodiment 2

[0087] This embodiment also provides a hybrid random access device in a satellite Internet of Things scenario, including a processor and a storage medium;

[0088] the storage medium is used for storing instructions;

[0089] The processor is configured to operate in accordance with the instructions to perform the steps of the method according to Embodiment 1.

Embodiment 3

[0091] This embodiment provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method in Embodiment 1.

[0092] As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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PUM

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Abstract

The invention discloses a hybrid random access method and device in a satellite Internet of Things scene, and the method comprises the steps: a terminal of a transmitting end receives a synchronization signal, and completes the synchronization of a frame and a time slot; according to the sending requirement of each terminal, determining that each terminal is in a non-spread spectrum mode or a spread spectrum mode, and the terminals of the sending end comprise a non-spread spectrum terminal and a spread spectrum terminal; carrying out carrier modulation on the non-spread spectrum terminal signal to obtain a non-spread spectrum data packet, and carrying out spread spectrum and then modulation on the spread spectrum terminal signal to obtain a spread spectrum data packet; and the non-spread spectrum terminal selects a channel and a time slot to randomly send the modulated non-spread spectrum data packet, and the spread spectrum terminal selects a channel and a time slot to randomly send the modulated spread spectrum data packet. According to the invention, two traditional random access modes, i.e., hybrid superposition of a non-spread spectrum random access mode and a spread spectrum random access mode in the same system, are realized, the throughput of the system can be improved, the service requirements of various terminals in an actual scene are met, and the method is suitable for the working scene of massive terminal access such as the satellite Internet of Things.

Description

technical field [0001] The invention belongs to the technical field of satellite Internet of Things, and relates to a hybrid random access method and device in a satellite Internet of Things scenario. Background technique [0002] In recent years, with the continuous improvement of people's demand for messaging and the continuous advancement of information and communication technology, the concept of the Internet of Things has attracted widespread attention in this context. Because the Internet of Things can network and informatize the real physical world, and integrate and communicate the two separated worlds of the physical world and the information world, the Internet of Things has become an important part of supporting the intelligent industry, realizing intelligent Intelligent environmental monitoring, waste management, traffic control, intelligent metering, identification and positioning, and tracking management and many other functions have promoted the rapid developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W72/04H04W4/30H04W56/00H04L27/20
CPCH04W74/0833H04W72/0446H04W4/30H04W56/001H04L27/20Y02D30/70
Inventor 刘子威万茜张更新
Owner NANJING UNIV OF POSTS & TELECOMM
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