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Random access method and device

A technology of random access and random access process, applied in electrical components, wireless communication, etc., can solve problems such as random access failure and achieve the effect of improving the success rate

Inactive Publication Date: 2019-10-29
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the UE does not receive RAR when the number of times the UE sends the random access preamble reaches the limit number, then the random access fails
In the prior art, the downlink of a cell corresponds to only one uplink, and when the above random access fails, the UE can only wait for the next random access

Method used

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Embodiments of the invention are some embodiments, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present invention.

[0044] In order to meet people's increasing communication needs, in the future 5G system, on the basis of the existing uplink (Uplink, UL for short), a supplementary uplink (Supplementary Uplink, SUL for short) will be introduced to expand the uplink coverage, the frequency used by the supplementary uplink is lower than ...

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Abstract

The embodiment of the invention discloses a random access method and device. The method comprises the following steps: initiating a random access process through an uplink; and if the random access process initiated through the uplink fails, initiating the random access process through a supplementary uplink. The device is used for executing the method. According to the random access method and device provided by the embodiment of the invention, the random access process can be initiated through the uplink, and after the random access process initiated through the uplink fails, the random access process is initiated through supplementing the uplink, so that the success rate of the random access process is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of mobile communication, and in particular to a random access method and device. Background technique [0002] With the popularization of smart phones, tablet computers and other devices, people's demand for mobile communication is increasing day by day. [0003] The random access technology is an important technology in mobile communication, which is an access process before a User Equipment (UE) performs mobile communication, and is mainly used for initial registration of a user and application for user resource broadband. The random access process can be divided into contention mode random access and non-contention mode random access. figure 1 It is a communication flow chart of the random access process based on contention mode in the prior art, such as figure 1 As shown, the UE sends a random access preamble to the base station through the uplink; the UE receives a random acc...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W74/00
CPCH04W74/004H04W74/0833
Inventor 李亚娟
Owner POTEVIO INFORMATION TECH