Journal articles: 'Communications cellules'

1

Després, Merlin, and Simon Gaudin. "Le monoxyde d’azote: Une arme du système immunitaire pour brouiller les communications entre bactéries." médecine/sciences 36, no. 11 (November 2020): 1074–77. http://dx.doi.org/10.1051/medsci/2020214.

Full text

Abstract:

Le dossier thématique suivant a été rédigé par les étudiantes et étudiants de Master 1 de Biologie de l’École Normale Supérieure de Lyon à l’issue de l’UE Microbiologie Moléculaire et Structurale (2019-2020). Le Master de Biologie de l’ENS de Lyon, cohabilité par l’université Claude Bernard Lyon 1, accueille chaque année environ 50 étudiants en M1 et en M2 et propose une formation de haut niveau à la recherche en biosciences. Chaque étudiant y construit son parcours à la carte, en choisissant ses options parmi un large panel de modules, favorisant ainsi une approche pluridisciplinaire des sciences du vivant, et ce en relation étroite avec les laboratoires de recherche du tissu local, national et international. En participant à diverses activités scientifiques connexes aux UE de leur formation, les étudiants préparent également l’obtention du Diplôme de l’ENS de Lyon, qui valide leur scolarité à l’ENS. La rédaction du présent dossier, qui vise à transmettre de façon claire les messages issus d’une sélection d’articles scientifiques publiés récemment dans le domaine de la microbiologie, constitue l’une de ces activités connexes proposées aux étudiants. Les bactéries peuvent vivre en communautés dont la structure est régulée par de nombreuses interactions abiotiques et biotiques. Les interactions biotiques reposent sur des communications inter-bactériennes qui participent à la mise en place de relations de collaboration, de compétition ou de prédation. Ces communautés bactériennes peuvent en outre être en interaction avec des hôtes animaux, dans le cas des bactéries du microbiote ou des bactéries pathogènes par exemple, ou avec des virus parasites, les bactériophages. Le présent dossier illustre quelques aspects nouveaux de cette communication bactérienne, et de la façon dont les interactions bactéries/hôte ou bactéries/phages peuvent impacter cette communication. Deux nouvelles s’attardent sur des découvertes récentes autour du quorum sensing, une modalité de communication bactérienne permettant l’expression coordonnée des gènes à l’échelle de la population, en fonction de la densité de la population. La nouvelle intitulée « Le monoxyde d’azote : une arme du système immunitaire pour brouiller les communications entre bactéries » illustre comment le quorum sensing chez Staphylococcus aureus, une bactérie opportuniste, peut être affecté par un médiateur du système immunitaire de la souris. La nouvelle intitulée « Un bactériophage exploite le système de communication de son hôte bactérien pour entrer en cycle lytique » montre une stratégie étonnante par laquelle le phage VP882 décrypte des signaux issus du quorum sensing de la bactérie qu’il infecte pour réguler son propre cycle de réplication. Au-delà du quorum sensing, deux nouvelles décrivent de nouvelles modalités de communication inter-bactérienne. La nouvelle intitulée « Les nanotubes bactériens, acteurs de la compétition entre Bacillus subtilis et Bacillus megaterium » met en lumière le rôle des nanotubes, des structures de communication intercellulaire insoupçonnées jusque récemment chez les bactéries. La nouvelle intitulée « La bactérie Vibrio cholerae lyse les bactéries environnantes et assimile leur ADN qu’elle intègre dans son propre génome » illustre comment un système de sécrétion, qui permet l’injection d’effecteurs bactériens dans des cellules cibles, peut être exploité pour faciliter les transferts horizontaux de gènes chez les bactéries. Enfin, pour élargir la réflexion au monde des virus eucaryotes, deux nouvelles montrent comment l’infection virale peut interférer avec la communication entre cellules eucaryotes, sur l’exemple de la communication s’effectuant par l’intermédiaire de vésicules extracellulaires. La nouvelle intitulée « La sécrétion de vésicules extracellulaires par les plaquettes activées à l’origine de la létalité de la dengue ? » discute des mécanismes par lesquels le virus de la dengue déclenche la sécrétion de vésicules extracellulaires par les plaquettes, et des conséquences que cela peut avoir sur l’inflammation et le déclenchement de chocs hémorragiques. La nouvelle intitulée « Le coccolithovirus et Emiliania huxleyi : le détournement viral des vésicules extracellulaires » montre enfin comment ce virus d’algue unicellulaire exploite la communication intercellulaire de son hôte pour augmenter son pouvoir de diffusion au sein de la population, et des conséquences écologiques et géochimiques que cela peut entraîner à grande échelle.

APA, Harvard, Vancouver, ISO, and other styles

2

JANIS, Pekka, Chia-Hao YU, Klaus DOPPLER, Cassio RIBEIRO, Carl WIJTING, Klaus HUGL, Olav TIRKKONEN, and Visa KOIVUNEN. "Device-to-Device Communication Underlaying Cellular Communications Systems." International Journal of Communications, Network and System Sciences 02, no. 03 (2009): 169–78. http://dx.doi.org/10.4236/ijcns.2009.23019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Y.S.V.Raman, Y. S. V. Raman, Dr S. Sri Gowri Dr S.Sri Gowri, and Dr B. Prabharkara Rao. "Performance Enhancement of Dynamic Channel Allocation in Cellular Communication System." Indian Journal of Applied Research 3, no. 7 (October 1, 2011): 322–25. http://dx.doi.org/10.15373/2249555x/july2013/99.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

M.P., Haripriya, and Venkadesh P. "Investigation Study on Secured Data Communication on 5G Cellular Networks." Journal of Advanced Research in Dynamical and Control Systems 11, no. 11-SPECIAL ISSUE (November 20, 2019): 323–30. http://dx.doi.org/10.5373/jardcs/v11sp11/20193038.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Doh, Inshil, Jiyoung Lim, Shi Li, and Kijoon Chae. "Pairwise and group key setup mechanism for secure machine-to-machine communication." Computer Science and Information Systems 11, no. 3 (2014): 1071–90. http://dx.doi.org/10.2298/csis130922065d.

Full text

Abstract:

In the ubiquitous environment, more and more devices are deployed in our daily life, and need to communicate with one another. M2M (Machine-to-Machine) communication is considered to be one of the major issues in future networks. M2M is expected to bring various benefits in wireless communications when it is interconnected with cellular networks. Considering the characteristics of cellular M2M networks, traditional security solutions are not proper to be applied to cellular M2M networks because the M2M network itself is vulnerable to various attacks. We consider security aspects for cellular M2M communications and propose a key management mechanism including the pairwise key and group key establishment. Our proposal could provide reliability and efficiency for the cellular M2M communication network in the secure manner.

APA, Harvard, Vancouver, ISO, and other styles

6

Combarnous, Yves, and Thi Mong Diep Nguyen. "Cell Communications among Microorganisms, Plants, and Animals: Origin, Evolution, and Interplays." International Journal of Molecular Sciences 21, no. 21 (October 28, 2020): 8052. http://dx.doi.org/10.3390/ijms21218052.

Full text

Abstract:

Cellular communications play pivotal roles in multi-cellular species, but they do so also in uni-cellular species. Moreover, cells communicate with each other not only within the same individual, but also with cells in other individuals belonging to the same or other species. These communications occur between two unicellular species, two multicellular species, or between unicellular and multicellular species. The molecular mechanisms involved exhibit diversity and specificity, but they share common basic features, which allow common pathways of communication between different species, often phylogenetically very distant. These interactions are possible by the high degree of conservation of the basic molecular mechanisms of interaction of many ligand–receptor pairs in evolutionary remote species. These inter-species cellular communications played crucial roles during Evolution and must have been positively selected, particularly when collectively beneficial in hostile environments. It is likely that communications between cells did not arise after their emergence, but were part of the very nature of the first cells. Synchronization of populations of non-living protocells through chemical communications may have been a mandatory step towards their emergence as populations of living cells and explain the large commonality of cell communication mechanisms among microorganisms, plants, and animals.

APA, Harvard, Vancouver, ISO, and other styles

7

Armstrong, John. "Cellular communication." Nature 359, no. 6394 (October 1992): 441. http://dx.doi.org/10.1038/359441a0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Das, Sree Krishna, and Md Farhad Hossain. "A Distance Based Communication Mode Selection Mechanism for M2M Communications Over Cellular Networks." Wireless Personal Communications 115, no. 3 (October 7, 2020): 2501–14. http://dx.doi.org/10.1007/s11277-020-07693-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Collins, Hugh. "Cellular radio communications." Facilities 3, no. 3 (March 1985): 10–14. http://dx.doi.org/10.1108/eb006332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Goodman, D. J. "Cellular packet communications." IEEE Transactions on Communications 38, no. 8 (1990): 1272–80. http://dx.doi.org/10.1109/26.58761.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Sandeep, K., K. Monisha, and G. Navya D. Harika T. Aasritha. "Promoting Device-to-Device Communication in Cellular Networks by Hashing Techniques." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 1257–60. http://dx.doi.org/10.31142/ijtsrd11229.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Pan, Bin, and Hao Wu. "Success Probability Analysis of C-V2X Communications on Irregular Manhattan Grids." Wireless Communications and Mobile Computing 2020 (August 19, 2020): 1–13. http://dx.doi.org/10.1155/2020/2746038.

Full text

Abstract:

To overcome the shortcomings of Dedicated Short Range Communications (DSRC), cellular vehicle-to-everything (C-V2X) communications have been proposed recently, which has a variety of advantages over traditional DSRC, including longer communication range, broader coverage, greater reliability, and smooth evolution path towards 5G. In this paper, we consider an LTE-based C-V2X communications network in irregular Manhattan grids. We model the macrobase stations (MBSs) as a 2D Poisson point process (PPP) and model the roads as a Manhattan Poisson line process (MPLP), with the roadside units (RSUs) modeled as a 1D PPP on each road. As an enhancement architecture to DSRC, C-V2X communications include vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication. Since the spectrum for PC5 interface in 5.9 GHz is quite limited, cellular networks could share some channels to V2I links to improve spectral efficiency. Thus, according to Maximum Power-based Scheme, we adopt the stochastic geometry approach to compute the signal-to-interference ratio- (SIR-) based success probability of a typical vehicle that connects to an RSU or an MBS and the area spectral efficiency of the whole network over shared V2I and V2N downlink channels. In addition, we study the asymptotic characteristics of success probability and provide some design insights according to the impact of several key parameters on success probability.

APA, Harvard, Vancouver, ISO, and other styles

13

Zhang, Xiaoying, Ahmed Khwaja, Muhammad Naeem, and Alagan Anpalagan. "Energy efficiency of cooperative D2D communications underlaying LTE-A networks." MATEC Web of Conferences 189 (2018): 03016. http://dx.doi.org/10.1051/matecconf/201818903016.

Full text

Abstract:

Device-to-device (D2D) communications underlaying LTE-A networks is expected to bring significant benefits for resource utilization and energy efficiency (EE) improvement of user equipment (UE). However, the allocation of radio and power resources to D2D communications needs elaborate coordination, because of the interference between D2D communications and cellular communications. In this paper, we propose an energy-efficient cooperative D2D communication (EECD2D) technique using a power allocation algorithm, aiming at maximizing EE introduced by D2D communications in LET-A networks. Specifically, we define four D2D and cellular combinations based on distances, and analyze average EE of EECD2D and that of cooperative D2D communications without optimization. Results show that average EE of our algorithm is much higher than that without optimization, and closer D2D cooperators and distant cellular UEs whose uplink resource is reused, achieve highest average energy efficiency.

APA, Harvard, Vancouver, ISO, and other styles

14

Albonda, Haider, Kadhum Al-Majdi, and Bahaa Abbas. "Developing capacity sharing strategy for vehicular networks with integrated use of licensed and unlicensed spectrum." EUREKA: Physics and Engineering, no. 3 (May 31, 2022): 149–58. http://dx.doi.org/10.21303/2461-4262.2022.002352.

Full text

Abstract:

A widely deployed cellular network, supported by direct connections, can offer a promising solution that supports new services with strict requirements on access availability, reliability, and end-to-end (E2E) latency. The communications between vehicles can be made using different radio interfaces: One for cellular communication (i.e., cellular communication over the cellular network based on uplink (UL)/downlink (DL) connections) and the other for direct communication (i.e., D2D-based direct communications between vehicles which allows vehicular users (V-UEs) to communicate directly with others). Common cellular systems with licensed spectrum backed by direct communication using unlicensed spectrum can ensure high quality of service requirements for new intelligent transportation systems (ITS) services, increase network capacity and reduce overall delays. However, selecting a convenient radio interface and allocating radio resources to users according to the quality of service (QoS) requirements becomes a challenge. In this regard, let’s introduce a new radio resource allocation strategy to determine when it’s appropriate to establish the communication between the vehicles over a cellular network using licensed spectrum resources or D2D-based direct connections over unlicensed spectrum sharing with Wi-Fi. The proposed strategy aims at meeting the quality of service requirements of users, including reducing the possibility of exceeding the maximum delay restrictions and enhancing network capacity utilization in order to avoid service interruption. The proposed solution is evaluated by highlighting different conditions for the considered scenario, and it is demonstrated that the proposed strategy improves network performance in terms of transmitted data rate, packet success rate, latency, and resource usage

APA, Harvard, Vancouver, ISO, and other styles

15

Albonda, Haider, Kadhum Al-Majdi, and Bahaa Abbas. "Developing capacity sharing strategy for vehicular networks with integrated use of licensed and unlicensed spectrum." EUREKA: Physics and Engineering, no. 3 (May 31, 2022): 149–58. http://dx.doi.org/10.21303/2461-4262.2022.002352.

Full text

Abstract:

A widely deployed cellular network, supported by direct connections, can offer a promising solution that supports new services with strict requirements on access availability, reliability, and end-to-end (E2E) latency. The communications between vehicles can be made using different radio interfaces: One for cellular communication (i.e., cellular communication over the cellular network based on uplink (UL)/downlink (DL) connections) and the other for direct communication (i.e., D2D-based direct communications between vehicles which allows vehicular users (V-UEs) to communicate directly with others). Common cellular systems with licensed spectrum backed by direct communication using unlicensed spectrum can ensure high quality of service requirements for new intelligent transportation systems (ITS) services, increase network capacity and reduce overall delays. However, selecting a convenient radio interface and allocating radio resources to users according to the quality of service (QoS) requirements becomes a challenge. In this regard, let’s introduce a new radio resource allocation strategy to determine when it’s appropriate to establish the communication between the vehicles over a cellular network using licensed spectrum resources or D2D-based direct connections over unlicensed spectrum sharing with Wi-Fi. The proposed strategy aims at meeting the quality of service requirements of users, including reducing the possibility of exceeding the maximum delay restrictions and enhancing network capacity utilization in order to avoid service interruption. The proposed solution is evaluated by highlighting different conditions for the considered scenario, and it is demonstrated that the proposed strategy improves network performance in terms of transmitted data rate, packet success rate, latency, and resource usage

APA, Harvard, Vancouver, ISO, and other styles

16

Ahmed, Jubayer, and Md Abdur Rouf. "Controlled, Uncontrolled Communication, Brand Name and Brand Attitude: A Relational Study on Cellular Telecom Sector of Bangladesh." American Journal of Trade and Policy 1, no. 3 (December 31, 2014): 103–10. http://dx.doi.org/10.18034/ajtp.v1i3.371.

Full text

Abstract:

The main objectives of the study is to examine the impact of communication variables like controlled communications, uncontrolled communications and brand name on brand attitude in the context of Grameen Phone Telecom. A systematic sampling method was adopted to collect data from the respondents. A total number of 100 questionnaires were distributed, and 93 completed (usable) questionnaires were considered for statistical analyses and research hypotheses testing. The researcher used statistical techniques like mean, standard deviation, correlation and regression analysis. The results of regression analysis are show that controlled communication and brand name are statistically and significantly associated to brand attitude. These results provided full support to research hypotheses 2 and 3. Uncontrolled communication failed to enter into the regression table which indicates that uncontrolled communication is not statistically and significantly associated to brand attitude. The results of regression analysis provided no support for research hypothesis-1. JEL Classification: M31, M37

APA, Harvard, Vancouver, ISO, and other styles

17

Yang, Yu, Zhang Xiao, Wang Shuai, Meng Rui, and Chao Wei Wang. "Interference Alignment-Based Resource Sharing for Device-to-Device Communication Underlaying Cellular Networks." Applied Mechanics and Materials 411-414 (September 2013): 832–39. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.832.

Full text

Abstract:

In this paper, we investigate Device-to-Device (D2D) communication underlaying cellular networks to provide spectrally efficient support of local services. Since in underlay mode, D2D communications share resources in the time and frequency domains with cellular system, it will introduce potentially severe interference to the cellular users and accordingly presents a challenge in radio resource management. In order to avoid generating interference to the high-priority users (cellular users) operating on the same time-frequency resources and to optimize the throughput over the shared resources under the transmit power and the quality of service (QoS) constraints, we propose an interference alignment-based resource sharing scheme for D2D communication underlaying cellular networks. The simulation results demonstrate that by using the proposed scheme, D2D communication can effectively improve the total throughput without generating harmful interference to cellular networks.

APA, Harvard, Vancouver, ISO, and other styles

18

Chavagnat, J. J. "FTSLU – L’évaluation dans tous ces états." European Psychiatry 30, S2 (November 2015): S78. http://dx.doi.org/10.1016/j.eurpsy.2015.09.354.

Full text

Abstract:

La santé coûte cher et l’effort qui lui est consacré par une collectivité est forcément limité. Et pourtant, « la santé n’a pas de prix » disent certains. Alors, comment mettre au service de toute la population les soins les meilleurs avec des moyens forcément limités ?– en organisant le dispositif sanitaire de façon à mieux répondre aux besoins ;– en fixant des règles de répartition des moyens qui nous donnent quelques garanties d’un usage économe et égalitaire des ressources ;– en évaluant les activités médicales pour aider à en améliorer sans cesse les résultats.L’évaluation fait peur pour le moins, elle ennuie pour le mieux. La psychiatrie est une discipline où l’appréciation objective des résultats des soins peut paraître comme extrêmement compliquée pour les plus désireux d’y parvenir ou extrêmement dangereuse pour les plus hostiles. Et pourtant, nous proposons trois communications qui évaluent des dispositifs importants dans le champ de la santé publique. Tout d’abord, en montrant quels sont les critères d’évaluation des cellules d’urgence médicopsychologique. Ces structures ont prouvé leur rôle incontournable dans les catastrophes et les événements à fort retentissement psychologique (décret du 7 janvier 2013). Cette évaluation est donc fondamentale. Dans un second temps, nous étudierons l’évaluation des pratiques professionnelles et la traçabilité des risques suicidaires : quelles en sont les intérêts et les limites. Ce sont bien deux sujets majeurs en santé publique. Enfin, nous terminerons cette session thématique en nous penchant sur la dimension transculturelle dans l’évaluation du risque suicidaire et du psychotraumatisme. Une étude réalisée en Guyane dans des villages amérindiens sera exposée. Elle a été effectuée à la demande du ministère de l’Outre-Mer.

APA, Harvard, Vancouver, ISO, and other styles

19

Goles, Eric, Pierre-Etienne Meunier, Ivan Rapaport, and Guillaume Theyssier. "Communications in cellular automata." Electronic Proceedings in Theoretical Computer Science 1 (June 25, 2009): 81–92. http://dx.doi.org/10.4204/eptcs.1.8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Hock-Beng Lim. "Beyond 3G [cellular communications]." IEEE Potentials 21, no. 4 (October 2002): 18–23. http://dx.doi.org/10.1109/mp.2002.1044213.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Noreen, Shama, Navrati Saxena, and Abhishek Roy. "Incentive and Penalty Mechanism for Power Allocation in Cooperative D2D-Cellular Transmissions." Electronics 9, no. 3 (February 28, 2020): 408. http://dx.doi.org/10.3390/electronics9030408.

Full text

Abstract:

In cellular communication systems, the introduction of device-to-device (D2D) communications provides a reasonable solution to facilitate high data rate services in short-range communication. However, it faces a challenging issue of interference management, where the cross-tier interference from D2D users to licensed cellular users (CUs) degrades their quality-of-service (QoS) requirements. D2D communications can also assist in offloading some nearby CUs to enhance the cellular operator’s benefit. To encourage the D2D transmitters (D2DT) to provide service to CUs in the dead zone, the cellular base station (CBS) needs to incentivize it with some monetary benefits. In this paper, a Stackelberg game-based joint pricing framework for interference management and data offloading is presented to illustrate the effects of cooperation between the D2D user and CBS. Specifically, a singular price is used to incentivize the D2DT to share its resources with the far-off CUs along with penalizing them for interference created at CBS. Simulation results illustrate the performance of the proposed technique in terms of the utilities of CUs and D2D users for varying distances of D2DT.

APA, Harvard, Vancouver, ISO, and other styles

22

Kapoor, Rajesh, Aasheesh Shukla, and Vishal Goyal. "Performance evaluation of unmanned aerial vehicle communication by increasing antennas of cellular base stations." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 1 (July 1, 2022): 222. http://dx.doi.org/10.11591/ijeecs.v27.i1.pp222-237.

Full text

Abstract:

The utilization of unmanned aerial vehicles (UAVs) increases with increased performance of their communication link with the ground remote station. Integrating UAVs with existing cellular networks provides the possibility of enhanced performance of communication links. The base stations of existing cellular networks are installed with fixed number of antennas. The performance of UAV communication links can be further enhanced by increasing antennas of cellular base stations of existing networks using multiple antenna techniques such as multi ple input multiple output (MIMO). In this proposed scheme, Massive MIMO technology is used for UAV communications, wherein hundreds of antennas are mounted on cellular base stations. This set up provides significant advantage in terms of enhancement in per formance of UAV communication links, as compared to existing methods of UAV communication. In this paper, performance evaluation of UAV communication links is carried out by increasing the number of antennas at base stations of existing cellular networks. For this evaluation, firstly basic multiple antennas techniques such as point - to - point MIMO and multi - user MIMO (MU - MIMO) are covered based on existing studies and findings. Subsequently, an antenna dependent closed form expression for uplink channel capac ity of massive MIMO based UAV communication links is derived, with few numerical results.

APA, Harvard, Vancouver, ISO, and other styles

23

Nadeem, Aamir, and Ho-Shin Cho. "Social-Aware Peer Selection for Device-to-Device Communications in Dense Small-Cell Networks." Electronics 8, no. 6 (June 13, 2019): 670. http://dx.doi.org/10.3390/electronics8060670.

Full text

Abstract:

Device-to-device communications refer to the emerging paradigm that permits direct communication between cellular users that are in close physical and social proximity. It is expected to become an essential aspect of the future 5G cellular communications system. As a prerequisite for device-to-device communications, a user has to select another user in its proximity that has the desired information/service and is willing to share it. In this paper, we propose a method for peer selection in dense small-cell device-to-device networks that uses multi-attribute decision modeling. The method exploits both the physical and social characteristics of the user equipment to find the most suitable peer for device-to-device communications. We assume hexagonal small-cell and macro-cell architectures with a small-cell/macro-cell base station with multiple user equipments in its coverage area to evaluate the proposed scheme’s performance. The small-/macro-cell base station exploits various social and physical attributes to rank peers and selects the best one for device-to-device communication with the requesting user. The numerical results demonstrate the proposed algorithm’s efficiency in terms of computational time, selection of the best peer, throughput, and energy efficiency of device-to-device communications.

APA, Harvard, Vancouver, ISO, and other styles

24

Choi, Young B., and Matthew E. Bunn. "The Security Risks and Challenges of 5G Communications." International Journal of Cyber Research and Education 3, no. 2 (July 2021): 46–53. http://dx.doi.org/10.4018/ijcre.2021070104.

Full text

Abstract:

With the introduction of the 5th generation of wireless systems and communications (5G) comes new risks and challenges. This paper explores the potential security challenges of 5G communication compared with legacy cellular networks and prior generations of communication standards. This paper defines what 5G is and how it affects our lives on a daily basis. It further discusses the new security features involving different technologies applied to 5G, such as heterogeneous networks, device-to-device communications, massive multiple-input multiple-output, software-defined networks, and the internet of things, including autonomous cars, healthcare, automated manufacturing, and more.

APA, Harvard, Vancouver, ISO, and other styles

25

Tawk, Youssef, Aleksandar Jovanovic, Phillip Tomé, Jérôme Leclère, Cyril Botteron, Pierre-André Farine, Ruud Riem-Vis, and Bertrand Spaeth. "A New Movement Recognition Technique for Flight Mode Detection." International Journal of Vehicular Technology 2013 (January 30, 2013): 1–18. http://dx.doi.org/10.1155/2013/149813.

Full text

Abstract:

Nowadays, in the aeronautical environments, the use of mobile communication and other wireless technologies is restricted. More specifically, the Federal Communications Commission (FCC) and the Federal Aviation Administration (FAA) prohibit the use of cellular phones and other wireless devices on airborne aircraft because of potential interference with wireless networks on the ground, and with the aircraft's navigation and communication systems. Within this context, we propose in this paper a movement recognition algorithm that will switch off a module including a GSM (Global System for Mobile Communications) device or any other mobile cellular technology as soon as it senses movement and thereby will prevent any forbidden transmissions that could occur in a moving airplane. The algorithm is based solely on measurements of a low-cost accelerometer and is easy to implement with a high degree of reliability.

APA, Harvard, Vancouver, ISO, and other styles

26

Hasan Al-Bowarab, Mustafa, Nurul Azma Zakaria, Zaheera Zainal Abidin, and Ziadoon Kamil Maseer. "Review on Device-to-Device Communication in Cellular based Network Systems." International Journal of Engineering & Technology 7, no. 3.20 (September 1, 2018): 435. http://dx.doi.org/10.14419/ijet.v7i3.20.20587.

Full text

Abstract:

In a traditional cellular-network based system, the devices are not allowed to be interconnected directly in the certified mobile bandwidth, and all communications are carried out via the base station (BS). At present, device terminal broadcasting allows devices in the distributed network to act as transmitting relays to each other and reach a massive ad hoc network of networks that is different from the previous cellular architecture that faces technical challenges. Therefore, this article explores the application of a cellular-based two-layer network system that includes a base station (BS) cellular layer, such as cellular-to-device communication and communication between devices. In the proposed two-tier cellular-based network system, user data is transmitted through other users' devices to implement the privacy protection that is lacking in prior communication between devices in cellular systems. To ensure a negligible impact on the performance of current communication between devices, a two-layer network is assimilated to autonomous interference management schemes and associated resource allocation schemes. The findings from this review provide an overview of the major challenges in two-tier networks and propose a two-tier cellular-based system in which user data is routed through other users' devices to implement privacy protection.

APA, Harvard, Vancouver, ISO, and other styles

27

Nugraha, Toha Ardi, Muhammad Putra Pamungkas, and Anna Nur Nazilah Chamim. "Interference Management using Power Control for Device-to-Device Communication in Future Cellular Network." Journal of Telecommunications and Information Technology 3 (September 28, 2018): 31–36. http://dx.doi.org/10.26636/jtit.2018.125418.

Full text

Abstract:

There are many scenarios that have been proposed for ﬁfth generation (5G) networks. Some of them, if implemented, will bring fundamental changes at the architectural and node level. One example of such proposed technologies is device-to-device (D2D) communications which will change the nature of conventional cellular network design. D2D permits direct communication between two or more user devices without intervention of the base station (i.e. eNB). D2D can ensure network performance improvement over the traditional cellular network, because it can oﬄoad the mobile data trafﬁc from the other devices. However, applying D2D features in a cellular network will bring about more complex interference problems, since D2D communication uses the same band as its underlying cellular communication network. The aim of this research is to investigate interference-related problems caused by D2D communications, aﬀecting the underlying cellular networks, during downlink and uplink transmissions. The paper examines the use of power control methods to mitigate interference. A comparison is oﬀered between ﬁxed power level (FC) with or without power control, and adaptive power controls using two methods (AC1 and AC2), on a base station or on each of the D2D devices, based on the measured signal to interference plus noise ratio (SINR). The simulation results show that both power control methods contribute to improvement of network performance. AC1 and AC2 can improve SINR by about 1 dB and 0.5 dB compared to FC in a downlink transmission, and by 0.5 dB in an uplink transmission.

APA, Harvard, Vancouver, ISO, and other styles

28

Rajab, Husam, Fatma Benkhelifa, and Tibor Cinkler. "Analysis of Power Allocation for NOMA-Based D2D Communications Using GADIA." Information 12, no. 12 (December 8, 2021): 510. http://dx.doi.org/10.3390/info12120510.

Full text

Abstract:

The new era of IoT brings the necessity of smart synergy for diverse communication and computation entities. The two extremes are, on the one hand, the 5G Ultra-Reliable Low-Latency Communications (URLLC) required for Industrial IoT (IIoT) and Vehicle Communications (V2V, V2I, V2X). While on the other hand, the Ultra-Low Power, Wide-Range, Low Bit-rate Communications, such as Sigfox, LoRa/LoRaWAN, NB-IoT, Cat-M1, etc.; used for smart metering, smart logistics, monitoring, alarms, tracking applications. This extreme variety and diversity must work in synergy, all inter-operating/inter-working with the Internet. The communication solutions must mutually cooperate, but there must be a synergy in a broader sense that includes the various communication solutions and all the processing and storage capabilities from the edge cloud to the deep-cloud. In this paper, we consider a non-orthogonal multiple access (NOMA)-based device to device (D2D) communication system coexisting with a cellular network and utilize Greedy Asynchronous Distributed Interference Avoidance Algorithm (GADIA) for dynamic frequency allocation strategy. We analyze a max–min fairness optimization problem with energy budget constraints to provide a reasonable boundary rate for the downlink to all devices and cellular users in the network for a given total transmit power. A comprehensive simulation and numerical evaluation is performed. Further, we compare the performance of maximum achievable rate and energy efficiency (EE) at a given spectral efficiency (SE) while employing NOMA and orthogonal frequency-division multiple access (OFDMA).

APA, Harvard, Vancouver, ISO, and other styles

29

Pishchin, O. N., D. S. Puzankov, K. V. Perova, and I. O. Chulkov. "Groups of mobile cellular service stations for operational radio communication tasks in remote areas." Journal of Physics: Conference Series 2091, no. 1 (November 1, 2021): 012031. http://dx.doi.org/10.1088/1742-6596/2091/1/012031.

Full text

Abstract:

Abstract The authors of the article consider solutions needed to organize mobile cellular communication systems in remote areas. Modern mobile stations do not have the capability to overcome marshy areas, steppe, heavily rugged reliefs of the desert, water barriers and forests. Moreover, the coverage area from one base station is not highly localized (radio coverage area is not significant). Furthermore, modern mobile communication facilities have poor autonomy. The article proposes measures for an operational organization of cellular communications in large remote areas with a coverage radius of a medium-sized city. Article also considers the issues posed by a temporary organization of communication service in large sections near important locations (pipelines, riverbeds, transport and railway lines). The need for such an operational usage of mobile communication systems is most associated with geological exploration and scientific research in large remote areas and large areas with a damaged communication system due to natural emergencies or military operations.

APA, Harvard, Vancouver, ISO, and other styles

30

Manale, Boughanja, and Tomader Mazri. "Security of communication 5G-V2X: A proposed approach based on securing 5G-V2X based on Blockchain." ITM Web of Conferences 43 (2022): 01025. http://dx.doi.org/10.1051/itmconf/20224301025.

Full text

Abstract:

With the rapid evolution of wireless communication and autonomous vehicles, vehicle to Everything (V2X) communications provides driving safety, traffic efficiency, and real-time traffic information in-vehicle networks. V2X has evolved by integrating 5G cellular access technology and New Radio (NR) into V2X communications (i.e., 5G NR V2X). Since the security issue in 5G-V2X remains a crucial point, we conducted a literature review approach and identified the 5G-V2X communication levels in this paper. The main objective of this study was to develop an approach to secure 5G-V2X. The proposed methodology is based on Blockchain to ensure the 5G-V2X architecture levels.

APA, Harvard, Vancouver, ISO, and other styles

31

Kitching, Ian D. "GPS and Cellular Radio Measurement Integration." Journal of Navigation 53, no. 3 (September 2000): 451–63. http://dx.doi.org/10.1017/s0373463300008936.

Full text

Abstract:

In many combined GPS/cellular radio receivers, the cellular radio segment is not used to aid the positioning process. Recently proposed Assisted-GPS systems use the communications channel to improve receiver time-to-first-fix and the GPS tracking sensitivity. However, the cellular radio signals can also be used for locating the receiver. Studies using the GSM mobile communication system have shown positional accuracy comparable to that of SA-degraded GPS. To achieve maximum performance (accuracy, availability, integrity and reliability), both sources of positioning information, GPS and cellular, should be regarded as sensor inputs to an integrated navigation system. In this way the benefits of both systems can be fully exploited to produce an optimal navigation solution.

APA, Harvard, Vancouver, ISO, and other styles

32

Huang, Cao, Xiao Jun Guo, and Ze Guo Liu. "An Integrated Wireless Communication System for Remote Pastoral Areas in Tibet." Applied Mechanics and Materials 427-429 (September 2013): 2313–16. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.2313.

Full text

Abstract:

To support mobile communications in remote pastoral areas of Tibet effectively, this paper proposes an integrated wireless communication system including mobile ad hoc network (MANET), wireless senor network (WSN), cellular network and Beidou satellite network. The overall integrated wireless communication system and the relevant elements are described specifically. The proposed system can help to reduce the network deployment cost and provide voice, message and low rate data services.

APA, Harvard, Vancouver, ISO, and other styles

33

Tošic, Predrag T. "Cellular Automata Communication Models." International Journal of Natural Computing Research 1, no. 3 (July 2010): 66–84. http://dx.doi.org/10.4018/jncr.2010070105.

Full text

Abstract:

In this paper, cellular automata (CA) are viewed as an abstract model for distributed computing. The author argues that the classical CA model must be modified in several important respects to become a relevant model for large-scale MAS. The paper first proposes sequential cellular automata (SCA) and formalizes deterministic and nondeterministic versions of SCA. The author then analyzes differences in possible dynamics between classical parallel CA and various SCA models. The analysis in this paper focuses on one-dimensional parallel and sequential CA with node update rules restricted to simple threshold functions, as arguably the simplest totalistic, yet non-linear (and non-affine) update rules. The author identifies properties of asymptotic dynamics that can be proven to be entirely due to the assumption of perfect synchrony in classical, parallel CA. Finally, the paper discusses what an appropriate CA-based abstraction would be for large-scale distributed computing, insofar as the inter-agent communication models. In that context, the author proposes genuinely asynchronous CA and discusses main differences between genuinely asynchronous CA and various weakly asynchronous sequential CA models found in the literature.

APA, Harvard, Vancouver, ISO, and other styles

34

Arac, Demet. "Cellular Communication via Adhesion." FASEB Journal 34, S1 (April 2020): 1. http://dx.doi.org/10.1096/fasebj.2020.34.s1.00206.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Jespersen, N. V. "Satellite-based cellular communication." IEEE Microwave Magazine 1, no. 2 (June 2000): 38–43. http://dx.doi.org/10.1109/6668.845017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Fels, Daniel. "Cellular Communication through Light." PLoS ONE 4, no. 4 (April 1, 2009): e5086. http://dx.doi.org/10.1371/journal.pone.0005086.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

El-Jabu, B., and R. Steele. "Cellular communications using aerial platforms." IEEE Transactions on Vehicular Technology 50, no. 3 (May 2001): 686–700. http://dx.doi.org/10.1109/25.933305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

SIDEMAN, SAMUEL. "Preface: The Cellular Communications Maze." Annals of the New York Academy of Sciences 1047, no. 1 (June 2005): xi—xxiv. http://dx.doi.org/10.1196/annals.1341.000.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Fountoulaki, Katerina, and Nikolaos Dagres. "Cellular Communications in the Heart." Cardiac Failure Review 1, no. 2 (2015): 64. http://dx.doi.org/10.15420/cfr.2015.1.2.64.

Full text

Abstract:

Heart failure is one of the leading causes of morbidity and mortality worldwide. Cardiac remodelling is first an adaptive, becoming a maladaptive, compensatory mechanism that finally causes ventricular dysfunction independently of the etiology of the initial insult. In the present article the authors describe the elements of the human heart, examining their basic functions and their inter-communication under both normal and pathological circumstances. Cardiac myocytes carry out mechanical and electrical functions of the heart and cardiac fibroblasts maintain its structural integrity. Several factors can affect fibroblast activation and under pathological stress they transdifferentiate into myofibroblasts. Endothelial cells have complex biological functions, including the control of vascular permeability, vasomotion, regulation of haemostasis, immune responses and angiogenesis. The extracellular matrix is a complex architectural network consisting of a variety of proteins. Various routes using a plethora of products and mediators contribute to the cross-talk of the myocytes with endothelial cells, extracellular matrix and cardiac fibroblasts. A better understanding of the entire mechanism of cellular communication by the established or the more recently discovered agents will certainly emerge promising new perspectives when looking at the prevention of heart failure and leading to more substantial therapeutic interventions.

APA, Harvard, Vancouver, ISO, and other styles

40

Vaigandla, Karthik Kumar, Sravani Thatipamula, and Radha Krishna Karne. "Investigation on Unmanned Aerial Vehicle (UAV): An Overview." IRO Journal on Sustainable Wireless Systems 4, no. 3 (August 2, 2022): 130–48. http://dx.doi.org/10.36548/jsws.2022.3.001.

Full text

Abstract:

Unmanned Aerial Vehicles (UAVs) are becoming increasingly popular these days. One among the major technological developments of today are UAVs or drones. The coordination and coverage capabilities of large clusters of UAVs, or their cooperative capabilities for such goals as terrain mapping, make them of particular interest. This paper explores the use of unmanned aerial vehicles in smart and modern cities in depth. Future wireless networks will likely include UAVs to facilitate wireless broadcasting and support high-speed transmissions. Various layer techniques are discussed in this paper. Moreover, an overview of the latest UAV communication technologies and network topologies has been presented. Military and commercial applications have attracted a lot of interest in unmanned aerial vehicles. Due to their low cost and flexible deployment, UAVs are considered valuable in 5G and 6G networks due to their communication capabilities. Like aerial base stations, relays, or mobile users in cellular networks, UAVs can provide airborne wireless coverage in a variety of ways. Wireless links can only be established temporarily with UAVs. A great challenge is to extend UAV communication's lifetime and develop low-power, green UAV communication. A comprehensive study of green UAV communications has been presented in this paper. Furthermore, an overview of UAV applications is also illustrated. Additionally, some promising research topics and methods are being discussed.

APA, Harvard, Vancouver, ISO, and other styles

41

Kamruzzaman, Md, Nurul I. Sarkar, and Jairo Gutierrez. "A Dynamic Algorithm for Interference Management in D2D-Enabled Heterogeneous Cellular Networks: Modeling and Analysis." Sensors 22, no. 3 (January 29, 2022): 1063. http://dx.doi.org/10.3390/s22031063.

Full text

Abstract:

To supporting a wider and diverse range of applications, device-to-device (D2D) communication is a key enabler in heterogeneous cellular networks (HetCNets). It plays an important role in fulfilling the performance and quality of service (QoS) requirements for 5G networks and beyond. D2D-enabled cellular networks enable user equipment (UE) to communicate directly, without any or with a partial association with base stations (eNBs). Interference management is one of the critical and complex issues in D2D-enabled HetCNets. Despite the wide adoption of D2D communications, there are very few researchers addressing the problems of mode selection (MS), as well as resource allocation for mutual interference in three-tier cellular networks. In this paper, we first identify and analyze three key factors, namely outage probability, signal-to-interference and noise ratio (SINR), and cell density that influence the performance of D2D-enabled HetCNets. We then propose a dynamic algorithm based on a distance-based approach to minimize the interference and to guarantee QoS for both cellular and D2D communication links. Results obtained show that outage probability is improved by 35% and 49% in eNB and SCeNB links, respectively, when compared with traditional neighbor-based methods. The findings reported in this paper provide some insights into interference management in D2D communications that can help network researchers and engineers contribute to further developing next-generation cellular networks.

APA, Harvard, Vancouver, ISO, and other styles

42

Goulart, Ana E., and Abhijeet Sahu. "Cellular IoT for Mobile Autonomous Reporting in the Smart Grid." International Journal of Interdisciplinary Telecommunications and Networking 8, no. 3 (July 2016): 50–65. http://dx.doi.org/10.4018/ijitn.2016070104.

Full text

Abstract:

Wireless access technologies are being embedded in utility meters, health devices, public safety systems, among others. These devices have low processing power and communicate at low data rates. New communication standards are being developed to support these machine-type communications (MTC), such as Cellular Internet of Things (CIoT), which is being developed by the third generation partnership project (3GPP). CIoT introduces cooperative ultra-narrow band (C-UNB) communications. It supports ad-hoc uplink transmissions, delay-tolerant downlink transmissions, and a simple authentication scheme. The C-UNB approach is proposed for Mobile Autonomous Reporting (MAR) applications, but it is not clear if it can be used for smart grid systems, such as sensors and smart meters in the Advanced Metering Infrastructure (AMI). In this paper, the authors review the C-UNB approach, study its performance in terms of collision rate and throughput, and discuss its potential for smart grid reporting applications.

APA, Harvard, Vancouver, ISO, and other styles

43

Et. al., Dr B. Suneela,. "MOLECULAR ABSORPTION IN ATOMSPHERE USING MILLIMETER WAVE COMMUNICATION." INFORMATION TECHNOLOGY IN INDUSTRY 9, no. 2 (April 1, 2021): 722–30. http://dx.doi.org/10.17762/itii.v9i2.405.

Full text

Abstract:

Millimeter wave (mmWave) communication has become the boom for manyacademic institutions and industry organisations reason for its benefits when related to the prevailing wireless communication procedures comprising of Wifi, 4G, 5G,mmWavepcommunications such as WiFi and 4G, mmWave communications implement frequency carriers at higher level including such features enormous range of bandwidth, quality, narrow beam, extreme transmissionsuperiority, and robust detection capability. Such critical situations affected by the most preferrable applications will be well tackled with the problems face by employing wireless technologies. The increase rapidly traffic can substantially lighten the wireless communication due to enhancement in the technology ofmmWave communications. Over the insight of mmWave advantageous with respect to the easy obstruction, clear handling, less wavelength, and blockings etc., to do with the major issues and concerns that utilize for the additionalamenities with enormous quantity of 5G communications with the traditional way ofstatementfor anti-impeding, dynamic control, interference supervision, spatial reuse, and system design for enhancement. This study surveys the various standards and concerns related to structural design and protocols for mmWave communicationsassessedon cellular based access and its beneficial areas has been investigated.

APA, Harvard, Vancouver, ISO, and other styles

44

Akiyoshi, Kazunari, Wakiko Asayama, Shin-ichiro M. Nomura, Yuki Moritani, and Tatsuya Suda. "S3e2-5 Liposome-Cellular Communication through Gap Junction(S3-e2: "Molecular Communication: Biologically Inspired Communication Systems for Nano-Scale Devices",Symposia,Abstract,Meeting Program of EABS & BSJ 2006)." Seibutsu Butsuri 46, supplement2 (2006): S145. http://dx.doi.org/10.2142/biophys.46.s145_1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Sterian, Corneliu Eugen D. "A Survey of Coding and Modulation Techniques for Inter-Vehicular Communications." International Journal of Vehicular Telematics and Infotainment Systems 1, no. 2 (July 2017): 46–70. http://dx.doi.org/10.4018/ijvtis.2017070104.

Full text

Abstract:

Direct inter-vehicular communication means that there is no infrastructure. This is in sharp contrast to mobile communication within a cellular network or between a moving vehicle and the roadside. It is assumed in this article that the mobile channel between the two vehicles is too rapidly time variable to be possible to measure it in real-time. The natural choice is then to select those coding and modulation techniques for which the knowledge of the channel state is not necessary at both the transmitter and the receiver, that is, to consider only differential and noncoherent communications technologies. As interesting options, the celebrated Golden code and the recently developed Golden-Alamouti space-time trellis coding are also proposed for inter-vehicular communications.

APA, Harvard, Vancouver, ISO, and other styles

46

Bouzakri, K., P. Plomgaard, and T. Berney. "Insulinorésistance : communication cellule musculaire-pancréas endocrine." Médecine des Maladies Métaboliques 5, no. 3 (June 2011): 322. http://dx.doi.org/10.1016/s1957-2557(11)70252-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Do, Dinh-Thuan, Tu-Trinh Thi Nguyen, Chi-Bao Le, and Jeong Woo Lee. "Two-Way Transmission for Low-Latency and High-Reliability 5G Cellular V2X Communications." Sensors 20, no. 2 (January 10, 2020): 386. http://dx.doi.org/10.3390/s20020386.

Full text

Abstract:

As one of key technologies of future networks, vehicle-to-everything (V2X) communication has recently been proposed to improve conventional vehicle systems in terms of traffic and communications. Main benefits of using V2X are efficient and safe traffic as well as low-latency communications and reliable massive connections. Non-orthogonal multiple access (NOMA) scheme was introduced as a promising solution in the fifth-generation (5G) mobile communications, by which quality-of-service (QoS) requirements of many 5G-enabled applications are satisfied as a result of improved network throughput and lower accessing and transmission latency. In this paper, we study NOMA-based communications between vehicles equipped with multiple antennas over Nakagami-m fading channels in V2X networks, in which uplink and downlink transmission between two vehicles with upper controller are supported by a road side unit (RSU) to increase the capacity rather than simply be connected to the base station. In the NOMA-V2X system under study, the outage probability depends on the power allocation factor of RSU transmission and the operation of successive interference cancellation (SIC) at vehicles. Analyses and simulations verify that the outage performance of NOMA-V2X system are mainly affected by fading parameters, levels of imperfect SIC, and power allocation factors.

APA, Harvard, Vancouver, ISO, and other styles

48

Bennett, Devon, Hamid Jahankhani, Mohammad Dastbaz, and Hossein Jahankhani. "A Secure Hybrid Network Solution to Enhance the Resilience of the UK Government National Critical Infrastructure TETRA Deployment." International Journal of Information Security and Privacy 5, no. 1 (January 2011): 1–13. http://dx.doi.org/10.4018/jisp.2011010101.

Full text

Abstract:

In developed economies, electronic communication infrastructures are crucial for daily public, private, and business interactions. Cellular systems are extensively used for business communications, private interaction, and in some cases, public information services, via such uses as mass SMS messaging. The Public Switched Telephone Network (PSTN) is at the core of all communications platforms. It was used primarily for voice communication purposes, but with current technological advances, this platform has been transformed from a voice to voice interface to a web enabled multimedia platform that provides commercial, business, and e-commerce services to the public. In response to the September 11, 2001, terrorist acts in New York City, the UK government introduced a policy of separating and transferring all emergency communication traffic from the PSTN to a digital public safety network based on the TETRA architecture. This paper extends the utilisation of the TETRA deployment by discussing a secure MANET hybrid solution for use in extreme situations as a short/mid-term EMS organisational communication platform for emergency and rescue operations.

APA, Harvard, Vancouver, ISO, and other styles

49

Nikbakht, Homa, Michèle Wigger, Malcolm Egan, Shlomo Shamai (Shitz), Jean-Marie Gorce, and H. Vincent Poor. "An Information-Theoretic View of Mixed-Delay Traffic in 5G and 6G." Entropy 24, no. 5 (April 30, 2022): 637. http://dx.doi.org/10.3390/e24050637.

Full text

Abstract:

Fifth generation mobile communication systems (5G) have to accommodate both Ultra-Reliable Low-Latency Communication (URLLC) and enhanced Mobile Broadband (eMBB) services. While eMBB applications support high data rates, URLLC services aim at guaranteeing low-latencies and high-reliabilities. eMBB and URLLC services are scheduled on the same frequency band, where the different latency requirements of the communications render their coexistence challenging. In this survey, we review, from an information theoretic perspective, coding schemes that simultaneously accommodate URLLC and eMBB transmissions and show that they outperform traditional scheduling approaches. Various communication scenarios are considered, including point-to-point channels, broadcast channels, interference networks, cellular models, and cloud radio access networks (C-RANs). The main focus is on the set of rate pairs that can simultaneously be achieved for URLLC and eMBB messages, which captures well the tension between the two types of communications. We also discuss finite-blocklength results where the measure of interest is the set of error probability pairs that can simultaneously be achieved in the two communication regimes.

APA, Harvard, Vancouver, ISO, and other styles

50

Shao, Xin, Xiaoyan Lu, Jie Liao, Huajun Chen, and Xiaohui Fan. "New avenues for systematically inferring cell-cell communication: through single-cell transcriptomics data." Protein & Cell 11, no. 12 (May 21, 2020): 866–80. http://dx.doi.org/10.1007/s13238-020-00727-5.

Full text

Abstract:

AbstractFor multicellular organisms, cell-cell communication is essential to numerous biological processes. Drawing upon the latest development of single-cell RNA-sequencing (scRNA-seq), high-resolution transcriptomic data have deepened our understanding of cellular phenotype heterogeneity and composition of complex tissues, which enables systematic cell-cell communication studies at a single-cell level. We first summarize a common workflow of cell-cell communication study using scRNA-seq data, which often includes data preparation, construction of communication networks, and result validation. Two common strategies taken to uncover cell-cell communications are reviewed, e.g., physically vicinal structure-based and ligand-receptor interaction-based one. To conclude, challenges and current applications of cell-cell communication studies at a single-cell resolution are discussed in details and future perspectives are proposed.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Communications cellules'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles