Filters








54 Hits in 2.7 sec

Average Age of Information of Irregular Repetition Slotted ALOHA [article]

Andrea Munari, Alexey Frolov
2020 arXiv   pre-print
Specifically, we derive for the first time an exact closed-form expression of the average AoI achieved by irregular repetition slotted ALOHA (IRSA), and compare its performance to that of a slotted ALOHA  ...  Flanking traditional metrics such as throughput and reliability, age of information (AoI) is emerging as a fundamental tool to capture the performance of IoT systems.  ...  Irregular repetition slotted ALOHA (IRSA) [15] : In this case, channel access is organised over frames composed by m slots each.  ... 
arXiv:2004.01998v2 fatcat:hecdbxhkyraetea4mel47gwim4

Modern Random Access: an Age of Information Perspective on Irregular Repetition Slotted ALOHA [article]

Andrea Munari
2021 arXiv   pre-print
To start addressing this gap we provide in this paper the first study of the AoI of a scheme in this family, namely irregular repetition slotted ALOHA (IRSA).  ...  Moreover, a comparison with the performance of a simpler slotted ALOHA strategy highlights a remarkable potential for modern random access schemes in terms of information freshness.  ...  Irregular repetition slotted ALOHA Under IRSA operations [17] , access to the medium is organised in frames of duration m slots each.  ... 
arXiv:2007.10030v2 fatcat:xwv7wgndtzdtbfdxg4xugtz26u

Information Freshness in Random Access Channels for IoT Systems

Andrea Munari, Elif Uysal
2021 2021 International Balkan Conference on Communications and Networking (BalkanCom)  
The fundamental trade-offs that emerge are discussed together with the enhancement achieved by a number of novel schemes tailored to optimize age of information.  ...  on variations of the basic ALOHA protocol, employed in most practical IoT systems.  ...  Among them, a pioneering role was played by irregular repetition slotted ALOHA (IRSA) and its evolutions [23] . In such schemes, time is organized in frames composed of an equal number of slots.  ... 
doi:10.1109/balkancom53780.2021.9593228 fatcat:6545vtxhcnfp5dtifpweaq57k4

Age of Information in Reservation Multi-Access Networks with Stochastic Arrivals [article]

Qian Wang, He Chen
2022 arXiv   pre-print
This paper investigates the Age of Information (AoI) performance of Frame Slotted ALOHA with Reservation and Data slots (FSA-RD).  ...  To provide insights in optimizing the information freshness of FSA-RD, we manage to derive a closed-form expression of the average AoI under FSA-RD by applying a recursive method.  ...  Very recently, the AoI performance of irregular repetition slotted ALOHA was studied and compared with that of slotted ALOHA in [14] .  ... 
arXiv:2206.00874v1 fatcat:vrmclxi2tvgrdmjxmti7rwv6tm

An Age of Information Characterization of Frameless ALOHA

Andrea Munari, Francisco Lazaro, Giuseppe Durisi, Gianluigi Liva
2021 2021 55th Asilomar Conference on Signals, Systems, and Computers  
We provide a characterization of the peak age of information (AoI) achievable in a random-access system operating according to the frameless ALOHA protocol.  ...  , on the average peak AoI.  ...  AVERAGE PEAK AGE OF INFORMATION We now analyze the performance of frameless ALOHA in terms of information freshness.  ... 
doi:10.1109/ieeeconf53345.2021.9723087 fatcat:3oydjsxtm5cmtnkej63d3fcjdu

An Age of Information Characterization of Frameless ALOHA [article]

Andrea Munari, Francisco Lázaro, Giuseppe Durisi, Gianluigi Liva
2021 arXiv   pre-print
We provide a characterization of the peak age of information (AoI) achievable in a random-access system operating according to the frameless ALOHA protocol.  ...  , on the average peak AoI.  ...  AVERAGE PEAK AGE OF INFORMATION We now analyze the performance of frameless ALOHA in terms of information freshness.  ... 
arXiv:2112.00491v1 fatcat:vfpfk3xs5bdkdfvw52tuneejny

Enhancing Contention Resolution ALOHA Using Combining Techniques

Federico Clazzer, Christian Kissling, Mario Marchese
2018 IEEE Transactions on Communications  
Evolutions of ALOHA employ time diversity through proactive replication of packets, but the time diversity is not fully exploited at the receiver.  ...  Asynchronous (slot- and frame-wise) ALOHA-like random access protocols, are very attractive for such applications, enabling low complexity transmitters and avoiding time synchronization requirements.  ...  An extension of irregular repetition slotted ALOHA (IRSA), named coded slotted ALOHA (CSA) has been presented and analysed in [17] , where the packets are not simply repeated as in IRSA and CRDSA, but  ... 
doi:10.1109/tcomm.2017.2759264 fatcat:bh7q77kggzdo7gn5icf2s4zjm4

Age of Information in Prioritized Random Access [article]

Khac-Hoang Ngo, Giuseppe Durisi, Alexandre Graell i Amat
2021 arXiv   pre-print
We consider the irregular repetition slotted ALOHA protocol and analyze the AoI evolution by means of a Markovian analysis following similar lines as in Munari (2021).  ...  Age of information (AoI) is a performance metric that captures the freshness of status updates.  ...  PLR approximation, which yields an accurate approximation of the AVP.  ... 
arXiv:2112.01182v1 fatcat:qurh2mf5fzfhzmqi2h3hqim554

Spatiotemporal Analysis for Age of Information in Random Access Networks under Last-Come First-Serve with Replacement Protocol [article]

Howard H. Yang, Ahmed Arafa, Tony Q. S. Quek, H. Vincent Poor
2021 arXiv   pre-print
We investigate the age-of-information (AoI) in the context of random access networks, in which transmitters need to send a sequence of information packets to the intended receivers over a shared spectrum  ...  Moreover, the slotted ALOHA protocol is shown to be instrumental in reducing the AoI when the packet arrival rates are high, yet it cannot contribute to decreasing the AoI in the regime of infrequent packet  ...  Nevertheless, it is shown that the slotted ALOHA can be modified to minimize AoI by either introducing an age threshold [14] or operating it in an irregular repetition manner [15] .  ... 
arXiv:2109.08825v1 fatcat:6erpa3ubsbcx7dqpjff4ryghbe

A Game Theoretic Approach to Irregular Repetition Slotted Aloha

Iman Hmedoush, Cedric Adjih, Kinda Khawam, Paul Muhlethaler
2022 IEEE Access  
In this article, we shed light on one of the modern candidates for random access protocols fitted for IoT: the "Irregular Repetition Slotted ALOHA" (IRSA).  ...  ALOHA-type channel access.  ...  CONCLUSION In this article, we studied one of the modern random access protocols, Irregular Repetition Slotted Aloha (IRSA).  ... 
doi:10.1109/access.2022.3140495 fatcat:zy3kdd6fvzevnfpbollinejoty

A Game Theoretic Approach to Age of Information in Modern Random Access Systems

Leonardo Badia, Andrea Munari
2021 2021 IEEE Globecom Workshops (GC Wkshps)  
The age of information is a performance metric describing the freshness of updates, and is of particular interest for remote sensing scenarios involving high number of nodes, as is expected to happen,  ...  e.g., in emergency scenarios or industrial applications of the Internet of Things.  ...  recently in [19] modern access techniques more appropriate for large-scale IoT systems such as irregular repetition slotted ALOHA (IRSA) [20] were examined.  ... 
doi:10.1109/gcwkshps52748.2021.9682065 fatcat:yegihpyzdbdpdo5tpezggvuekm

On the Modeling and Performance Assessment of Random Access with SIC [article]

Alberto Mengali, Riccardo De Gaudenzi, Cedomir Stefanovic
2018 arXiv   pre-print
We then investigate RA modeling aspects and their impact on the figures of merit for the exemplary advanced RA schemes: Contention Resolution Diversity Slotted ALOHA (CRDSA), Irregular Repetition Slotted  ...  ALOHA (IRSA), Coded Slotted ALOHA (CSA) and Enhanced Spread-Spectrum ALOHA (E-SSA).  ...  Specifically, in this paper, we assess the performance of the exemplary high-performing RA schemes with SIC, namely Contention Resolution Diversity Slotted ALOHA (CRDSA) [8] , Irregular Repetition Slotted  ... 
arXiv:1801.06357v1 fatcat:w6jwjaotanecxltrgbmvzlo5pq

Guest Editorial Age of Information

Roy D. Yates, Yin Sun, D. Richard Brown, Sanjit K. Kaul, Eytan Modiano, Sennur Ulukus
2021 IEEE Journal on Selected Areas in Communications  
In "Game of ages in a distributed network," Saurav and Vaze consider a distributed IoT network, where each node wants to minimize its own age of information and there is a cost to make any transmission  ...  This tension has led to the introduction of new performance metrics based on the Age of Information (AoI) that capture how timely is one's knowledge of an entity or process.  ...  ., in "On the minimum average age of information in IRSA for grant-free mMTC," consider the optimal design of a frame-based irregular repetition slotted ALOHA (IRSA) protocol for minimizing the average  ... 
doi:10.1109/jsac.2021.3066816 fatcat:q25s42txefgy7bph73bcifeqqm

On the Age of Information for AMP based Grant-Free Random Access [article]

Dongliang Zhang, Jie Gong, Xiang Chen
2022 arXiv   pre-print
In this paper, by taking the Age of Information (AoI) as the primary performance indicator, the information freshness using AMP-based grant-free scheme is investigated and compared with grant-based scheme  ...  Base on the analysis, a user scheduling strategy with sleep threshold and forcing active threshold is proposed to further reduce average AoI (AAoI).  ...  To serve the sporadically active users, irregular repetition slotted ALOHA (IRSA) was proposed which is a low-complexity grant-free random access [3] , [4] .  ... 
arXiv:2207.04712v1 fatcat:j4cqiyyumre4vmhcyu3jw5xfm4

Understanding Age of Information in Large-Scale Wireless Networks [article]

Howard H. Yang, Chao Xu, Xijun Wang, Daquan Feng, Tony Q. S. Quek
2020 arXiv   pre-print
The notion of age-of-information (AoI) is investigated in the context of large-scale wireless networks, in which transmitters need to send a sequence of information packets, which are generated as independent  ...  advanced channel access approaches, and iii) when the infrastructure is densely rolled out, there exists a non-trivial ALOHA channel access probability that minimizes the peak and average AoI under both  ...  Abstract-The notion of age-of-information (AoI) is investigated in the context of large-scale wireless networks, in which transmitters need to send a sequence of information packets, which are generated  ... 
arXiv:2012.12472v1 fatcat:ryxyrcmqxjbypecvojigfhdooe
« Previous Showing results 1 — 15 out of 54 results