Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems
In this paper, we consider a device-to-device communication system, where a multi-antenna mobile user directly communicates with nearby multiple devices, and propose a low-latency random access protocol utilizing random beams at the user. In our system model, each device tries to access the user wit...
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doaj-4ef35aa119d04740b63198a74f8ec0c12021-03-30T02:42:11ZengIEEEIEEE Access2169-35362020-01-018798877989510.1109/ACCESS.2020.29904489078675Random Beam-Based Random Access for Low-Latency Device-to-Device Communication SystemsJung Hoon Lee0https://orcid.org/0000-0002-7875-2398Yunjoo Kim1Il-Gu Lee2Department of Electronics Engineering and Applied Communications Research Center, Hankuk University of Foreign Studies, Yongin, South KoreaElectronics and Telecommunications Research Institute, Daejeon, South KoreaDepartment of Convergence Security Engineering, Sungshin University, Seoul, South KoreaIn this paper, we consider a device-to-device communication system, where a multi-antenna mobile user directly communicates with nearby multiple devices, and propose a low-latency random access protocol utilizing random beams at the user. In our system model, each device tries to access the user with randomly selected one among multiple orthogonal (near-orthogonal) preambles, so the devices with different preambles can be discerned at the user. Meanwhile, the mobile user has multiple antennas and tries to fully utilize multiplexing gains. In our proposed protocol, the user adopts the orthogonal random beams both for reception and transmission regardless of channel conditions. Thus, in some cases, the multiple devices with the same preamble can be decoded at the user. Moreover, the user of random beamforming can reduce the computational complexity and time delay for beamforming. We analyze the access probability with our proposed random access protocol and find each device's one-shot access probability with the approximated one. Our simulation results show that our proposed protocol increases the random access probability compared to the conventional protocol that does not utilize the multiplexing gains, and our analysis well matches in various scenarios.https://ieeexplore.ieee.org/document/9078675/Device-to-device (D2D) communicationslong-term evolution (LTE)new radio (NR)random accessrandom beamforming |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jung Hoon Lee Yunjoo Kim Il-Gu Lee |
spellingShingle |
Jung Hoon Lee Yunjoo Kim Il-Gu Lee Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems IEEE Access Device-to-device (D2D) communications long-term evolution (LTE) new radio (NR) random access random beamforming |
author_facet |
Jung Hoon Lee Yunjoo Kim Il-Gu Lee |
author_sort |
Jung Hoon Lee |
title |
Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems |
title_short |
Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems |
title_full |
Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems |
title_fullStr |
Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems |
title_full_unstemmed |
Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems |
title_sort |
random beam-based random access for low-latency device-to-device communication systems |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
In this paper, we consider a device-to-device communication system, where a multi-antenna mobile user directly communicates with nearby multiple devices, and propose a low-latency random access protocol utilizing random beams at the user. In our system model, each device tries to access the user with randomly selected one among multiple orthogonal (near-orthogonal) preambles, so the devices with different preambles can be discerned at the user. Meanwhile, the mobile user has multiple antennas and tries to fully utilize multiplexing gains. In our proposed protocol, the user adopts the orthogonal random beams both for reception and transmission regardless of channel conditions. Thus, in some cases, the multiple devices with the same preamble can be decoded at the user. Moreover, the user of random beamforming can reduce the computational complexity and time delay for beamforming. We analyze the access probability with our proposed random access protocol and find each device's one-shot access probability with the approximated one. Our simulation results show that our proposed protocol increases the random access probability compared to the conventional protocol that does not utilize the multiplexing gains, and our analysis well matches in various scenarios. |
topic |
Device-to-device (D2D) communications long-term evolution (LTE) new radio (NR) random access random beamforming |
url |
https://ieeexplore.ieee.org/document/9078675/ |
work_keys_str_mv |
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