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Random access method and device

A technology of random access and random access process, applied in the field of communication

Active Publication Date: 2020-10-23
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a random access method and device to solve the problem of how the terminal device initiates the random access process

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] The technical solutions in the embodiments of the present invention can be applied to various communication systems, such as: Long Term Evolution (LongTerm Evolution, LTE) / Enhanced Long Term Evolution (Long Term Evolution Advanced, LTE-A) system, LTE Frequency Division Duplex (Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD) system, 5G system, or New Radio (New Radio, NR) system, etc.

[0032] In the e...

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Abstract

The embodiment of the invention discloses a random access method and device. The method comprises the following steps: determining a congestion state of a target frequency band; and initiating a random access process on the target frequency band or not initiating the random access process on the target frequency band according to the congestion state. According to the method provided by the embodiment of the invention, the congestion state of the target frequency band for initiating the random access process is considered before the terminal equipment initiates the random access process, so that the terminal equipment can initiate a proper random access process or give up the initiation of the random access process, and the possibility of random access failure caused by channel congestionis reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, and more particularly to a random access method and device. Background technique [0002] In a mobile communication system, if a terminal device needs to send uplink data, it needs to realize uplink timing synchronization through a random access process, that is, obtain uplink timing advance (Timing Advance, TA) information from the network side. After obtaining uplink synchronization, the terminal device can send uplink data through dynamic scheduling or semi-persistent scheduling. [0003] Usually, the terminal device initiates a 4-step (4-Step) random access (Random Access Channel, RACH) process to realize uplink timing synchronization. In order to enable future mobile communication systems (eg, 5G) to adapt to more diverse scenarios and service requirements, current terminal devices can also implement uplink timing synchronization through the RACH process including 2 steps (2-S...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W74/08
CPCH04W28/0284H04W28/0289H04W74/0833
Inventor 吴昱民
Owner VIVO MOBILE COMM CO LTD