Results 11 to 20 of about 3,601,239 (277)

Program Algebra for Random Access Machine Programs

open access: yesScientific Annals of Computer Science, 2022
This paper presents an algebraic theory of instruction sequences with instructions for a random access machine (RAM) as basic instructions, the behaviours produced by the instruction sequences concerned under execution, and the interaction ...
Cornelis Middelburg
doaj   +1 more source

Delayed Response and Random Backoff First for Low-Power Random Access of IoT Devices with Poor Channel Conditions

open access: yesSensors, 2023
As IoT services become more active, the density of IoT devices is increasing, and massive connectivity technology is needed to support numerous devices simultaneously.
Minjoong Rim
doaj   +1 more source

Index Modulation–Aided Mixed Massive Random Access

open access: yesFrontiers in Communications and Networks, 2021
In this study, a mixed massive random access scheme is considered where part of users transmit both common information and user-specific information, while others transmit only common information.
Zijie Liang, Jianping Zheng, Jie Ni
doaj   +1 more source

Random Beam-Based Random Access for Low-Latency Device-to-Device Communication Systems

open access: yesIEEE Access, 2020
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.
Jung Hoon Lee, Yunjoo Kim, Il-Gu Lee
doaj   +1 more source

D2D Assisted Q-Learning Random Access for NOMA-Based MTC Networks

open access: yesIEEE Access, 2022
Machine-type communications (MTC) should account for half the connections to the internet by 2030. The use case massive MTC (mMTC) allows for applications to connect a massive number of low-power and low-complexity devices, leading to challenges in ...
Matheus V. da Silva   +4 more
doaj   +1 more source

Performance optimization for mMTC in 5G network with multiple random access schemes

open access: yes物联网学报, 2022
To optimize the support for massive machine type communication (mMTC) services with different traffic characteristics, packet-based random access (PBRA) scheme coexists with the connection-based random access (CBRA) scheme in 5G networks.Yet, given the ...
Wen ZHAN   +3 more
doaj   +2 more sources

Delay performance in random-access grid networks [PDF]

open access: yes, 2013
We examine the impact of torpid mixing and meta-stability issues on the delay performance in wireless random-access networks. Focusing on regular meshes as prototypical scenarios, we show that the mean delays in an $L\times L$ toric grid with normalized ...
Borst, Sem C.   +3 more
core   +11 more sources

Sliding Group Window with Rebacking off for Collision Avoidance in High-Efficiency Wireless Networks

open access: yesMathematics, 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

Random Access Game and Medium Access Control Design [PDF]

open access: yes, 2010
Motivated partially by a control-theoretic viewpoint, we propose a game-theoretic model, called random access game, for contention control. We characterize Nash equilibria of random access games, study their dynamics, and propose distributed algorithms (
Chen, Lijun   +2 more
core   +3 more sources

Sign-Compute-Resolve for Random Access [PDF]

open access: yes, 2014
We present an approach to random access that is based on three elements: physical-layer network coding, signature codes and tree splitting. Upon occurrence of a collision, physical-layer network coding enables the receiver to decode the sum of the ...
Goseling, Jasper   +2 more
core   +4 more sources

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