Method and device for random access based on beamforming

A random access and beamforming technology, applied in the field of communication, can solve problems such as lack, and achieve the effects of improving performance, reducing the probability of conflict, and improving receiving capacity

Active Publication Date: 2021-09-24
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the uplink random access procedure, it cannot fully benefit from the beamforming gain in the mmWave band due to the lack of information on the optimal transmit / receive beam pair
Therefore, the design of the uplink random access process in the mmWave frequency band is facing great challenges

Method used

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  • Method and device for random access based on beamforming
  • Method and device for random access based on beamforming
  • Method and device for random access based on beamforming

Examples

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Embodiment Construction

[0039] Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the same numerals may be used for similar components or functional assemblies in the drawings. The accompanying drawings are only intended to illustrate embodiments of the present disclosure. Those skilled in the art can obtain alternative implementations from the following descriptions without departing from the spirit and scope of the present disclosure.

[0040] As used herein, the term "comprising" and its variations may be understood as open-ended terms meaning "including but not limited to". The term "based on" may be understood as "based at least in part on". The term "one embodiment" can be read as "at least one embodiment". The term "another embodiment" may be understood as "at least one other embodiment".

[0041]For ease of explanation, embodiments of the present disclosure will be described herein mainly with referenc...

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Abstract

Embodiments of the present disclosure disclose a beamforming-based random access method and device. The method includes: using a plurality of downlink transmission beams at the base station to transmit broadcast signals; using a plurality of uplink reception beams to receive a random access signal from a terminal device, the plurality of uplink reception beams being associated with a plurality of downlink transmission beams; responding to receiving receiving a random access signal, determining a transmit beam for the terminal device; and sending a random access response to the terminal device using the determined transmit beam. Embodiments of the present disclosure also provide a corresponding beamforming-based random access method performed at the opposite end, and a corresponding device.

Description

technical field [0001] Embodiments of the present disclosure generally relate to the communication field, and in particular, relate to a beamforming-based random access method and device. Background technique [0002] Due to the abundance of frequency resources available in the mmWave band, mmWave technology is considered a key enabler to meet the increasing performance requirements for 5G New Radio (NR) access systems. However, when operating in the mmWave frequency band, wireless channels have some unfavorable propagation characteristics, such as strong path loss, atmospheric and rain absorption, low diffraction around obstacles, and the ability to penetrate objects, etc. To overcome these unfavorable propagation characteristics, large-scale antenna arrays and narrow beams are key technologies for data transmission. [0003] For data transmission in mmWave frequency bands, signal attenuation can be effectively mitigated by using massive multiple-input multiple-output (MIM...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/06H04W4/06H04W74/00H04W74/08
Inventor 刘皓
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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