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Статті в журналах з теми "Cellular packet networks"

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Budka, Kenneth C., Hong Jiang, and Steven E. Sommars. "Cellular digital packet data networks." Bell Labs Technical Journal 2, no. 3 (August 14, 2002): 164–81. http://dx.doi.org/10.1002/bltj.2072.

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Ben Halima, Nadhir, Dzmitry Kliazovich, and Fabrizio Granelli. "Service-Aware Retransmission Control in Cellular Networks." Journal of Computer Systems, Networks, and Communications 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/256964.

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This paper proposes a service-aware cross-layer approach between application/transport layers on the mobile terminal and link layer on the wireless base station to enable dynamic control on the level of per-packet error protection for multimedia data streams. Specifically, in the context of cellular networks, the proposed scheme enables the mobile terminal to specify to the base station the desired level of Hybrid ARQ (HARQ) protection by using an in-band control feedback channel. Such protection is dynamically adapted on a per-packet basis and depends on the perceptual importance of different packets as well as on the reception history of the flow. Experimental results demonstrate the potential benefits deriving from the proposed strategy either for audio and video real-time streams as well as for TCP-based data transfers.
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Ghaderi, Majid, Raouf Boutaba, and Gary W. Kenward. "Joint call and packet QoS in cellular packet networks." Computer Networks 51, no. 4 (March 2007): 1060–71. http://dx.doi.org/10.1016/j.comnet.2006.07.004.

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Mallapur, Jayashree D., Sunilkumar S. Manvi, and D. H. Rao. "Fuzzy Based Packet Dropping Scheme in Wireless Cellular Networks." International Journal of Computers Communications & Control 6, no. 2 (June 1, 2011): 305. http://dx.doi.org/10.15837/ijccc.2011.2.2179.

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Wireless multimedia networks are becoming very popular owing to the user demands for multimedia services. Packet dropping in the event of buffer congestion is one of the important issue in wireless multimedia networks. A packet dropping scheme has to be flexible and adaptive such that acceptable quality of an application is maintained. The paper presents a fuzzy based packet dropping scheme for wireless multimedia networks. A buffer manager placed at the base station performs packet dropping depending upon the traffic conditions and type of an application. Packet dropping is performed by computing dropping factor by considering packet priority, queue length and adaptive queue length threshold. The adaptive queue length threshold is used to dynamically adjust the dropping factor. The queue length threshold is varied by using two fuzzy input parameters, channel condition and rate of flow of an application. The scheme has been extensively simulated to test the performance in terms of acceptance and dropping probability of real-time handoff and new calls.
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Cardieri, Paulo, and Jose M. C. Brito. "Packet Retransmission in D2D Underlay Cellular Networks." IEEE Communications Letters 22, no. 9 (September 2018): 1914–17. http://dx.doi.org/10.1109/lcomm.2018.2856250.

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Meng, Xiaoqiao, Zhenghua Fu, and Songwu Lu. "Robust Packet Scheduling in Wireless Cellular Networks." Mobile Networks and Applications 9, no. 2 (April 2004): 113–23. http://dx.doi.org/10.1023/b:mone.0000013623.35214.49.

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Kalyanasundaram, Suresh, Junyi Li, Edwin K. P. Chong, and Ness B. Shroff. "Channel Sharing Scheme for Packet-Switched Cellular Networks." Wireless Networks 11, no. 6 (November 2005): 661–76. http://dx.doi.org/10.1007/s11276-005-3521-x.

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Salkintzis, A. K. "Packet data over cellular networks: the CDPD approach." IEEE Communications Magazine 37, no. 6 (June 1999): 152–59. http://dx.doi.org/10.1109/35.769290.

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Davie, M. C., and J. B. Smith. "A cellular packet radio data network." Electronics & Communications Engineering Journal 3, no. 3 (1991): 137. http://dx.doi.org/10.1049/ecej:19910022.

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Yin, Chenyang, Ping Dong, Xiaojiang Du, Tao Zheng, Hongke Zhang, and Mohsen Guizani. "An Adaptive Network Coding Scheme for Multipath Transmission in Cellular-Based Vehicular Networks." Sensors 20, no. 20 (October 19, 2020): 5902. http://dx.doi.org/10.3390/s20205902.

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With the emergence of vehicular Internet-of-Things (IoT) applications, it is a significant challenge for vehicular IoT systems to obtain higher throughput in vehicle-to-cloud multipath transmission. Network Coding (NC) has been recognized as a promising paradigm for improving vehicular wireless network throughput by reducing packet loss in transmission. However, existing researches on NC do not consider the influence of the rapid quality change of wireless links on NC schemes, which poses a great challenge to dynamically adjust the coding rate according to the variation of link quality in vehicle-to-cloud multipath transmission in order to avoid consuming unnecessary bandwidth resources and to increase network throughput. Therefore, we propose an Adaptive Network Coding (ANC) scheme brought by the novel integration of the Hidden Markov Model (HMM) into the NC scheme to efficiently adjust the coding rate according to the estimated packet loss rate (PLR). The ANC scheme conquers the rapid change of wireless link quality to obtain the utmost throughput and reduce the packet loss in transmission. In terms of the throughput performance, the simulations and real experiment results show that the ANC scheme outperforms state-of-the-art NC schemes for vehicular wireless multipath transmission in vehicular IoT systems.
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Дисертації з теми "Cellular packet networks"

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Lee, Hyungkeun. "Efficient techniques for multimedia transmission over packet-switched cellular networks." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2002. http://wwwlib.umi.com/cr/syr/main.

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Alrowili, Mohammed F. H. "Capacity Enhancement Approaches for Long Term Evolution networks: Capacity Enhancement-Inspired Self-Organized Networking to Enhance Capacity and Fairness of Traffic in Long Term Evolution Networks by Utilising Dynamic Mobile Base-Stations." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17322.

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The long-term evolution (LTE) network has been proposed to provide better network capacity than the earlier 3G network. Driven by the market, the conventional LTE (3G) network standard could not achieve the expectations of the international mobile telecommunications advanced (IMT-Advanced) standard. To satisfy this gap, the LTE-Advanced was introduced with additional network functionalities to meet up with the IMT-Advanced Standard. In addition, due to the need to minimize operational expenditure (OPEX) and reduce human interventions, the wireless cellular networks are required to be self-aware, self-reconfigurable, self-adaptive and smart. An example of such network involves transceiver base stations (BTSs) within a self-organizing network (SON). Besides these great breakthroughs, the conventional LTE and LTE-Advanced networks have not been designed with the intelligence of scalable capacity output especially in sudden demographic changes, namely during events of football, malls, worship centres or during religious and cultural festivals. Since most of these events cannot be predicted, modern cellular networks must be scalable in terms of capacity and coverage in such unpredictable demographic surge. Thus, the use of dynamic BTSs is proposed to be used in modern and future cellular networks for crowd and demographic change managements. Dynamic BTSs are complements of the capability of SONs to search, determine and deploy less crowded/idle BTSs to densely crowded cells for scalable capacity management. The mobile BTSs will discover areas of dark coverages and fill-up the gap in terms of providing cellular services. The proposed network relieves the LTE network from overloading thus reducing packet loss, delay and improves fair load sharing. In order to trail the best (least) path, a bio-inspired optimization algorithm based on swarm-particle optimization is proposed over the dynamic BTS network. It uses the ant-colony optimization algorithm (ACOA) to find the least path. A comparison between an optimized path and the un-optimized path showed huge gain in terms of delay, fair load sharing and the percentage of packet loss.
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Brown, Robert L. "Application of Cellular Automata to Detection of Malicious Network Packets." NSUWorks, 2014. http://nsuworks.nova.edu/gscis_etd/106.

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A problem in computer security is identification of attack signatures in network packets. An attack signature is a pattern of bits that characterizes a particular attack. Because there are many kinds of attacks, there are potentially many attack signatures. Furthermore, attackers may seek to avoid detection by altering the attack mechanism so that the bit pattern presented differs from the known signature. Thus, recognizing attack signatures is a problem in approximate string matching. The time to perform an approximate string match depends upon the length of the string and the number of patterns. For constant string length, the time to matchnpatterns is approximatelyO(n); the time increases approximately linearly as the number of patterns increases. A binary cellular automaton is a discrete, deterministic system of cells in which each cell can have one of two values. Cellular automata have the property that the next state of each cell can be evaluated independently of the others. If there is a processing element for each cell, the next states of all cells in a cellular automaton can be computed simultaneously. Because there is no programming paradigm for cellular automata, cellular automata to perform specific functions are createdad hocby hand or discovered using search methods such as genetic algorithms. This research has identified, through evolution by genetic algorithm, cellular automata that can perform approximate string matching for more than one pattern while operating in constant time with respect to the number of patterns, and in the presence of noise. Patterns were recognized by using the bits of a network packet payload as the initial state of a cellular automaton. After a predetermined number of cycles, the ones density of the cellular automaton was computed. Packets for which the ones density was below an experimentally determined threshold were identified as target packets. Six different cellular automaton rules were tested against a corpus of 7.2 million TCP packets in the IDEval data set. No rule produced false negative results, and false positive results were acceptably low.
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Spencer, Logan Lemuella C. "Changing from the silo model to the horizontal layers model in public policy regulations : the implications and potential for the telecommunications industry /." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11282005-192311/.

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Yu, Yi. "Radio Resource Planning in Low Power Wide Area IoT Networks." Electronic Thesis or Diss., Paris, CNAM, 2021. http://www.theses.fr/2021CNAM1287.

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Cette thèse étudie le problème de planification des ressources pour les réseaux IoT longues portées basés sur les technologies NB-IoT et LoRa. Dans les deux cas, on suppose que les capteurs et les collecteurs sont distribués suivant des processus de points de Poisson spatial indépendants marqués par le caractère aléatoire du canal. Pour le NB-IoT, nous élaborons un modèle de dimensionnement statistique qui estime le nombre de ressources radio nécessaires en fonction du délai d’accès toléré, de la densité des nœuds actifs, des collecteurs et de la configuration de l’antenne. Pour le réseau LoRa, nous proposons une technique d’allocation de plusieurs sous-bandes pour atténuer le niveau élevé d’interférence induit par les nœuds qui transmettent avec le même facteur d’étalement. Pour allouer dynamiquement le facteur d’étalement et la puissance, nous présentons une approche d’apprentissage automatique avec multi-agents qui permet d’améliorer l’efficacité énergétique
In this thesis, we focus on radio resource planning issues for low power wide area networks based on NB-IoT and LoRa technologies. In both cases, the average behavior of the network is considered by assuming the sensors and the collectors are distributed according to independent random Poisson Point Process marked by the channel randomness. For the NB-IoT, we elaborate a statistical dimensioning model that estimates the number of radio resources in the network depending on the tolerated delay access, the density of active nodes, the collectors, and the antenna configuration with single and multi-user transmission. For the LoRa network, we propose a multi-sub band allocation technique to mitigate the high level of interference induced by nodes that transmit with the same spreading factor. To dynamically allocate the spreading factor and the power, we present a Q-learning multi-agent approach to improve the energy efficiency
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Elo, Hans-Filip. "Exploring web protocols for use on cellular networks : QUIC on poor network links." Thesis, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148682.

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New developments in web transport such as HTTP/2 and first and foremost QUIC promise fewer connections to track as well as shorter connection setup times. These protocols have proven themselves on modern reliable connections with a high bandwidth-delay-product, but how do they perform over cellular connections in rural or crowded areas where the connections are much more unreliable? A lot of new users of the web in todays mobile-first usage scenarios are located on poor connections. A testbench was designed that allowed for web browsing over limited network links in a con- trolled environment. We have compared the network load time of page loading over the protocols QUIC, HTTP/2 and HTTP/1.1 using a variety of different network conditions. We then used these measurements as a basis for suggesting which protocol to use during different conditions. The results show that newer is not always better. QUIC in general works reasonably well under all conditions, while HTTP/1.1 and HTTP/2 trade blows depending on connection conditions, with HTTP/1.1 sometimes outperforming both of the newer protocols.
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HUANG, JUN-REN, and 黃俊仁. "A dynamic hierarchical structure for cellular mobile packet radio networks." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/05805902050524902353.

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Yung, Chi Wah. "Distributed home agent mobility management for IP based cellular network." Thesis, 2013. http://hdl.handle.net/2440/82259.

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The convergence of wireless networks both fixed and mobile with the Internet is creating a revolution in the way wireless networked resources interact with each other. This thesis is concerned with mobile networks and proposes to deal with the mobility management problems for the mobile computing devices in the next generation of multi-technologies integrated IP based mobile networks. In order to do this, a new distributed home agent approach for mobility management has been developed that harmonizes the concept of micro-mobility and macro-mobility management in order to enable seamless mobility management on different kinds of wireless network environment especially interaction with the legacy cellular network in which resources are limited and expensive. The major contribution of this thesis is three-fold. Firstly, this thesis proposes network access architecture and a distributed mobility management scheme, which enables the mobility of a mobile device in a cellular packet data network in order to reduce the latency and network traffic required to handle the mobility management functionality. A detailed design of the distributed mobility management scheme is presented for the implementation and the conceptual model is analysed. Secondly, simulation of the mobility management schemes using two different network simulation packages to enable a comparison of the simulator functionalities is presented. Finally, the results of the simulation and suggested future work are presented.
Thesis (M.Phil.) -- University of Adelaide, School of Electrical and Electronic Engineering, 2013
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Huang, Pei-Ching, and 黃珮菁. "An H.263-based Hierarchical Coder and Packet Discard Policies for 3G Cellular Networks." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/69925105218985552575.

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Tokpo, Ovengalt Christophe Boris. "A fuzzy logic approach for call admission control in cellular networks." 2014. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001640.

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Анотація:
M. Tech. Electrical Engineering.
Discusses Call Admission Control (CAC) is a standard operating procedure responsible for accepting or rejecting calls based on the availability of network resources. It is also used to guarantee good Quality of Service (QoS) to ongoing users. However, there are a number of imprecisions to consider during the admission and handoff processes. These uncertainties arise from the mobility of subscribers and the time-varying nature of key admission factors such as latency and packet loss.These parameters are often imprecisely measured, which has a negative impact on the estimation of a channel spectral efficiency. In mobile networking, greater emphasis is towards delivering good QoS to real-time (RT) applications. It has become increasingly necessary to develop a model capable of handling uncertainties associated with the network in order to improve the quality of decisions relating to CAC. Type-1 and Type-2 Fuzzy Logic Controllers (FLCs) were deployed to allow the CAC to make better decisions in the presence of numerous uncertainties. The model successfully proposed associated meanings and degrees of certainty to the measured values of loss and latency by means of fuzzy sets and Membership Functions (MFs). The results obtained show that the fuzzy-based CAC performs better by reducing the call blocking and call dropping probabilities which are some of the key measurement parameters of QoS in wireless networking.
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Частини книг з теми "Cellular packet networks"

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Soldani, David, and Paolo Zanier. "Packet Data Transfer in UMTS Cellular Networks." In QoS and QoE Management in UMTS Cellular Systems, 91–140. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/9780470034057.ch4.

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Tae Yu, Jin, Myung Moon Lee, and Jin Woo Park. "Efficient Packet Scheduling for WDM-Based Micro-cellular Networks." In Mobile Communications, 30–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36555-9_4.

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Dimitrova, Desislava C., Hans van den Berg, and Geert Heijenk. "Performance Analysis of Uplink Packet Schedulers in Cellular Networks with Relaying." In Wireless and Mobile Networking, 263–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03841-9_24.

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Chen, Maoke, Tao He, and Xing Li. "A Mean-Field Theory of Cellular Automata Model for Distributed Packet Networks." In Lecture Notes in Computer Science, 773–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-25978-7_77.

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Del Monego, Hermes Irineu, Eliane Lucia Bodanese, Luiz Nacamura, and Richard Demo Souza. "A Dynamic Resource Allocation Scheme for Providing QoS in Packet-Switched Cellular Networks." In Mobility Aware Technologies and Applications, 117–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11569510_12.

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Ki, Young Min, Eun Sun Kim, Sung Il Woo, and Dong Ku Kim. "Downlink Packet Scheduling with Minimum Throughput Guarantee in TDD-OFDMA Cellular Network." In NETWORKING 2005. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems, 623–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11422778_50.

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Del Monego, Hermes Irineu, Luiz Nacamura Junior, Richard Demo Souza, Anelise Munaretto Fonseca, and Marcelo Eduardo Pellenz. "Comparative Analysis Among Different Monitoring Functions in a Bandwidth Renegotiation Scheme for Packet Switched Cellular Networks." In Personal Wireless Communications, 76–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11872153_7.

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El Héni, Neila, and Xavier Lagrange. "Evaluation of Multicast Scheduling and Clustering Schemes with Packet-Level Macro Diversity in High-Speed Cellular Networks." In Communications in Computer and Information Science, 453–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-05197-5_33.

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Pil Yoo, Jae, Kee Choen Kim, and Hyun Seung Choo. "Cellular Packet Network Supporting Multi-level Hierarchical Regional Registration." In Mobile Communications, 319–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36555-9_33.

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Dighriri, Mohammed, Gyu Myoung Lee, and Thar Baker. "Applying Scheduling Mechanisms Over 5G Cellular Network Packets Traffic." In Advances in Intelligent Systems and Computing, 119–31. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1165-9_11.

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Тези доповідей конференцій з теми "Cellular packet networks"

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Cotanis, N. "QoS estimation for cellular packet data networks." In 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484). IEEE, 2003. http://dx.doi.org/10.1109/vetecf.2003.1285299.

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Kalyanasundaram, S., Junyi Li, E. K. P. Chong, and N. B. Shroff. "Channel sharing scheme for packet-switched cellular networks." In IEEE INFOCOM '99. Conference on Computer Communications. Proceedings. Eighteenth Annual Joint Conference of the IEEE Computer and Communications Societies. The Future is Now (Cat. No.99CH36320). IEEE, 1999. http://dx.doi.org/10.1109/infcom.1999.751446.

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Lu, Songwu, Thyagarajan Nandagopal, and Vaduvur Bharghavan. "A wireless fair service algorithm for packet cellular networks." In the 4th annual ACM/IEEE international conference. New York, New York, USA: ACM Press, 1998. http://dx.doi.org/10.1145/288235.288242.

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Coluccia, Angelo, Fabio Ricciato, and Peter Romirer-Maierhofer. "On Robust Estimation of Network-Wide Packet Loss in 3G Cellular Networks." In 2009 IEEE Globecom Workshops. IEEE, 2009. http://dx.doi.org/10.1109/glocomw.2009.5360721.

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Hsieh, Hung-Yun, and Raghupathy Sivakumar. "On using the ad-hoc network model in cellular packet data networks." In the 3rd ACM international symposium. New York, New York, USA: ACM Press, 2002. http://dx.doi.org/10.1145/513800.513805.

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Xue Jun Li and Peter Han Joo Chong. "Performance study of packet-switched TDD-CDMA multihop cellular networks." In 2008 International Conference on Communications, Circuits and Systems (ICCCAS). IEEE, 2008. http://dx.doi.org/10.1109/icccas.2008.4657752.

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Rodrigues, Emanuel B., Fernando Casadevall, Pawel Sroka, Marco Moretti, and Giulio Dainelli. "Resource allocation and packet scheduling in OFDMA-based cellular networks." In 2009 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM). IEEE, 2009. http://dx.doi.org/10.1109/crowncom.2009.5189077.

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Qazi, Zafar Ayyub, Melvin Walls, Aurojit Panda, Vyas Sekar, Sylvia Ratnasamy, and Scott Shenker. "A High Performance Packet Core for Next Generation Cellular Networks." In SIGCOMM '17: ACM SIGCOMM 2017 Conference. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3098822.3098848.

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Zainuddin, Zahir, and Ady Wahyudi Paundu. "End user based measurement system for cellular packet data network performance." In 2012 IEEE International Conference on Communication, Networks and Satellite (ComNetSat). IEEE, 2012. http://dx.doi.org/10.1109/comnetsat.2012.6380792.

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A. Akintola, A., G. A. Aderounmu, and M. O. Adigun. "Performance Analysis of Double Buffer Technique (DBT) Model for Mobility Support in Wireless IP Networks." In InSITE 2005: Informing Science + IT Education Conference. Informing Science Institute, 2005. http://dx.doi.org/10.28945/2917.

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Анотація:
Existing mobility support models in cellular communications misinterpret mobility loss in cellular networks as congestion loss, thus it degrades the performance by invoking unnecessary congestion control action. In this paper, we investigated the performance of Double Buffer Technique (DBT) model for mobility support in wireless IP networks. The DBT model uses the END message and the TQRS timer to maintain the packet sequence and decrease the load on the new foreign agent when the timer expires, respectively. Also, the protocol showed improved performance degradation caused by the handover of the mobile terminal. In order to demonstrate the superiority of our scheme over the existing ones, we used the following performance metrics: packet out-of-sequence, cell loss ratio, bandwidth overhead, and suitability for real-time services. The numerical results obtained revealed that the buffer size, the waiting time, and the packet loss probabilities in the model were suitable to the wireless IP environment.
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Звіти організацій з теми "Cellular packet networks"

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Ren, Tianmin, and Richard J. La. Opportunistic Packet Scheduling in Cellular Networks with Base Station Antenna Arrays. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada637216.

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Chen, Yongzhou, Ammar Tahir, and Radhika Mittal. Controlling Congestion via In-Network Content Adaptation. Illinois Center for Transportation, September 2022. http://dx.doi.org/10.36501/0197-9191/22-018.

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Realizing that it is inherently difficult to match precisely the sending rates at the endhost with the available capacity on dynamic cellular links, we built a system, Octopus, that sends real-time data streams over cellular networks using an imprecise controller (that errs on the side of overestimating network capacity) and then drops appropriate packets in the cellular-network buffers to match the actual capacity. We designed parameterized primitives for implementing the packet-dropping logic, which the applications at the endhost can configure differently to express various content-adaptation policies. Octopus transport encodes the app-specified parameters in packet header fields, which the routers can parse to execute the desired dropping behavior. Our evaluation shows how real-time applications involving standard and volumetric videos can be designed to exploit Octopus for various requirements and achieve a performance that is 1.5 to 18 times better than state-of-the-art schemes.
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Gluck, J. W., and E. Geranlotis. Throughput and Packet Error Probability of Cellular Frequency-Hopped Spread-Spectrum Radio Networks. Fort Belvoir, VA: Defense Technical Information Center, January 1988. http://dx.doi.org/10.21236/ada454594.

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