An Efficient Backoff Procedure for IEEE 802.11ax Uplink OFDMA-Based Random Access
IEEE Access, 2022 IEEE 802.11ax stations can use multi-user (MU) uplink OFDMA-based random access (UORA) to improve per-station throughput in dense deployments in comparison to legacy IEEE 802.11 single-user access.
Katarzyna Kosek-Szott, Krzysztof Domino
semanticscholar +1 more source
An Enhanced Multiple Random Access Scheme for Satellite Communications [PDF]
, 2012 In this paper, we introduce Multi-Slots Coded ALOHA (MuSCA) as a multiple random access method for satellite communications. This scheme can be considered as a generalization of the Contention Resolution Diversity Slotted Aloha (CRDSA) mechanism. Instead
Bui, Huyen-Chi +6 more
core +1 more source
Sliding Group Window with Rebacking off for Collision Avoidance in High-Efficiency Wireless Networks
Mathematics, 2021 It is difficult for wireless local area networks (WLANs), IEEE 802.11ax high-efficiency WLAN (HEW), to join next-generation innovations such as 5th generation (5G) and Internet of Things (IoT) because they still have their conventional channel access ...
Alaa Omran Almagrabi +4 more
doaj +1 more source
Unsourced Multiple Access: A Coding Paradigm for Massive Random Access [PDF]
Proceedings of the IEEEThis article is a tutorial introduction to the field of unsourced multiple access (UMAC) protocols. We first provide a historical survey of the evolution of random access protocols, focusing specifically on the case in which uncoordinated users share a ...
G. Liva, Yury Polyanskiy
semanticscholar +1 more source
Two-Step Random Access for 5G System: Latest Trends and Challenges
IEEE Network, 2021 The 3rd Generation Partnership Project (3GPP) finalized Release 15 specifications for the 5th Generation New Radio (5G NR) in June 2018. In Release 16, the 3GPP worked on not only technical improvements over the previous release but also the introduction
Junseok Kim +5 more
semanticscholar +1 more source
Age-of-Information Dependent Random Access for Massive IoT Networks [PDF]
Conference on Computer Communications Workshops, 2020 As the most well-known application of the Internet of Things (IoT), remote monitoring is now pervasive. In these monitoring applications, information usually has a higher value when it is fresher.
H. Chen, Yifan Gu, S. Liew
semanticscholar +1 more source
ERCIM News, 2015 ICLR submission, 17 pages, 9 figures, 6 tables (with bibliography and appendix)
Karol Kurach +2 more
openaire +3 more sources
Non-Bayesian Activity Detection, Large-Scale Fading Coefficient Estimation, and Unsourced Random Access With a Massive MIMO Receiver [PDF]
IEEE Transactions on Information Theory, 2019 In this paper, we study the problem of user activity detection and large-scale fading coefficient estimation in a random access wireless uplink with a massive MIMO base station with a large number $M$ of antennas and a large number of wireless single ...
Alexander Fengler +3 more
semanticscholar +1 more source
Age of Information in Random Access Networks with Stochastic Arrivals
IEEE Conference on Computer Communications, 2021 We consider a Random Access network with a number of nodes transmitting time-sensitive information to a wireless base station. Packets are generated according to a stochastic process and nodes employ either Slotted-ALOHA or Carrier-Sense Multiple Access (
I. Kadota, E. Modiano
semanticscholar +1 more source
User Activity Detection and Channel Estimation for Grant-Free Random Access in LEO Satellite-Enabled Internet of Things [PDF]
IEEE Internet of Things Journal, 2020 With recent advances on the dense low-Earth orbit (LEO) constellation, the LEO satellite network has become one promising solution for providing global coverage for Internet-of-Things (IoT) services.
Zhaoji Zhang +6 more
semanticscholar +1 more source