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Priority-based distributed queue random access method

A random access and distributed technology, applied in the field of wireless communication, which can solve the problems of high collision probability and inability to guarantee the service quality of low-latency services, and achieve the effect of reducing access delay and improving access performance.

Active Publication Date: 2021-01-12
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

Secondly, the traditional contention-based access mechanism has a high collision probability and cannot guarantee the service quality of low-latency services

Method used

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  • Priority-based distributed queue random access method
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  • Priority-based distributed queue random access method

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Embodiment Construction

[0034]Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0035] Embodiments of the present invention relate to a priority-based distributed queue random access method, which mainly includes: mass machine type communication (massive machine type communication, mMTC) and high reliability and low latency communication (ultra reliable and low latency communication) , uRLLC) terminal coexistence scenario, the traditional random access technology cannot meet the different performance requir...

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Abstract

The invention relates to a priority-based distributed queue random access method. The method comprises steps of periodically broadcasting system information and lead code information to UTC and MTC devices; receiving access request information: randomly selecting one lead code from selectable lead codes by the equipment according to the lead code information, and taking the selected lead code as the access request information by the equipment; decoding the access request information, and sending random access reply information through each device; receiving connection request information, wherein each piece of equipment is generated through a resource block in a physical uplink shared channel according to random access reply information sent by the base station; judging whether the connection request information is collided or not, and executing a PDQRA method if the connection request information is collided; and if no collision exists, successfully accessing. The method is advantagedin that access performance can be improved by adjusting the preamble division ratio and the UTC device selection probability, the access delay of the UTC device can be ensured, and the access delay of the MTC device can be minimized.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a priority-based distributed queue random access method. Background technique [0002] In recent years, the intelligent and interconnected society has developed rapidly driven by 5G mobile communication technology. Facing the surge of data and devices, new air interface technology plays an important role. The Internet Data Center (IDC) predicts that in 2023, the number of devices connected to the 5G network will reach 1 billion, accounting for 9% of all mobile devices in the world. At the same time, mixed service access including enhanced mobile broadband, massive machine-type communication, and high-reliability and low-latency communication is a new trend in 5G wireless communication systems. In the traditional single-type terminal access problem, the academic and industrial circles mainly consider the user's access success rate, and when there are mixed service...

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Application Information

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IPC IPC(8): H04W74/08H04W74/00G06N3/00
CPCH04W74/0833H04W74/002G06N3/006
Inventor 陈一凡王国辉易辉跃张武雄许晖
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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