Enhanced Random Access Process Using Beam-Switching Techniques in 5G Networks 


Vol. 46,  No. 1, pp. 61-65, Jan.  2021
10.7840/kics.2021.46.1.61


PDF Full-Text
  Abstract

In a conventional Random Access (RA) process which uses the beamforming techniques, User Equipments (UEs) transmit preamble messages through a beam-switching method, and the Connection Request (Msg3) message through an optimal up-link beam determined during the preamble message transmission. In the conventional process, UEs cannot avoid a Msg3 collision when they select the same preamble and transmit the Msg3 at the same resource with the other UEs. Furthermore, perceiving the Msg3 collision, UEs perform a re-access procedure from selecting a new preamble to transmit the Msg3 at other resources. In this paper, we propose an enhanced RA process, which transmits preamble messages through a random beam-sweeping method and Msg3 through a random beam-switching method. In the proposed process, UEs which have selected the same preamble can avoid the Msg3 collision since they can transmit the optimal up-link beam containing the Msg3 at different times. Additionally, for the message collision, UEs perform the re-access procedure from the Msg3 retransmission since the Msg3 collision can be avoid by changing the beam-switching sequence. We confirm the performance of the proposed RA process by the simulation.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

J. Won, K. M. Kim, T. Lee, "Enhanced Random Access Process Using Beam-Switching Techniques in 5G Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 1, pp. 61-65, 2021. DOI: 10.7840/kics.2021.46.1.61.

[ACM Style]

Jun-Woo Won, Kyoung Min Kim, and Tae-Jin Lee. 2021. Enhanced Random Access Process Using Beam-Switching Techniques in 5G Networks. The Journal of Korean Institute of Communications and Information Sciences, 46, 1, (2021), 61-65. DOI: 10.7840/kics.2021.46.1.61.

[KICS Style]

Jun-Woo Won, Kyoung Min Kim, Tae-Jin Lee, "Enhanced Random Access Process Using Beam-Switching Techniques in 5G Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 1, pp. 61-65, 1. 2021. (https://doi.org/10.7840/kics.2021.46.1.61)

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880