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학술지 Low-latency random access in wireless networks
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저자
김은경, 이희수
발행일
202103
출처
ICT Express, v.7 no.1, pp.41-48
ISSN
2405-9595
출판사
한국통신학회 (KICS), Elsevier
DOI
https://dx.doi.org/10.1016/j.icte.2021.01.012
협약과제
20JH1300, (초저지연-2세부) 5G URLLC 서비스를 위한 초저지연 무선 접속 기술 개발, 이희수
초록
For fast access to the cell, we propose an enhanced random access scheme exploiting multiple transmissions of random access preambles and random access responses. The proposed random access scheme decreases the latency of the random access procedure, by avoiding random access retrials from the beginning of the random access procedure due to the expiry of a random access response window. We also provide a model and analysis of random access latency with the average delay and the failure probability of random access procedure. The model of random access latency considers the collisions of random access preambles transmitted by multiple mobile stations to a base station as well as the error of random access response corresponding to the received random access preamble transmitted by the base station to the mobile station. Our numerical results in accordance with the model show that the proposed scheme provides lower latency.
키워드
Low-latency communication, Multiple transmission, Random access, Ultra-reliable and low-latency communication (URLLC)
KSP 제안 키워드
Access Latency, Average delay, Failure Probability, Low-Latency Communication, Mobile station(MS), Numerical results, Random Access Procedure, Random access preamble, Random access scheme, Response window, Wireless network
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저작자 표시 - 비영리 - 변경금지 (CC BY NC ND)