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"This book provides an introduction to basic queuing systems, such as M/M/1 and its variants, as well as newer concepts like systems with priorities, networks of queues, and general service policies. Numerical examples are presented to guide readers into thinking about practical real-world applications, and students and researchers will be able to apply the methods learned to designing queuing systems that extend beyond the classroom. "

"We study a finite capacity Markovian queuing system with two heterogeneous servers, reverse balking, and reneging. The stationary system size probabilities are obtained by using iterative method. The measures of performance like expected system size, the average rate of reverse balking, and the average rate of reneging are obtained. Finally, the sensitivity analysis of the model is carried out."

"ABSTRAKThe aim of this work is to define a procedure for the modelling of a computer network for the simulation of the network traffic induced by the execution of web applications. The work consists in describing the objects of a library defined for modelling both the hardware and the software of the system. These are specific objects with an architecture based on complex queuing service structures. The objects of the library are used to both build the computer network model and describe the operation of a web application executed on the network in a distributed fashion."

"Pada skripsi ini, dilakukan perancangan suatu WLAN dengan memanfaatkan metode antrian protokol MAC untuk pengaturan kualitas layanan (QoS) pada aplikasi FTP, video, dan voice. Kemudian diimplementasikan dengan teknologi tunnel pada IP Security yang berfungsi untuk menangani keamanan jaringannya. Perancangan dan simulasi dilakukan dengan menggunakan software OPNET Modeler 14.5. Simulasi dibagi menjadi beberapa skenario yang merupakan kombinasi dari metode antrian protokol MAC (DCF, PCF, dan EDCF) dengan teknik enkripsi pada tunnel. Analisa dilakukan pada pengaruh enkripsi dalam tunnel terhadap QoS WLAN. Parameter QoS wireless yang menjadi analisa adalah throughput, media access delay, retransmission attempt, dan data dropped. Hasil simulasi menunjukkan bahwa pengaruh enkripsi di dalam tunnel pada WLAN menyebabkan penurunan QoS yang kecil untuk konfigurasi jaringan yang sama. Perbedaan yang kecil pada parameter-parameter pengujian menunjukkan penerapan enkripsi tidak banyak membebani performa WLAN, namun dapat memberikan kemanan data.

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At this following thesis has designed a WLAN (Wireless LAN) by using the queue method of protocol MAC for Quality of Service (QoS) setting on the FTP application, video, and voice. And then it is implemented with the tunnel technology on IP Security to deal with network security. Design and simulation would be conducted by using software OPNET Modeler 14.5. The simulation divided to be several scenarios which is combine from a queue method (DCF, PCF, and EDCF) with encryption technique on the tunnel. Analysis conducted in encryption influence on tunnel toward QOS WLAN. Throughput, media access delay, retransmission attempt, and data dropped are become the analysis of QoS parameter wireless. The Simulation result shows the influence of encryption inside the tunnel on the WLAN led to a small decrease in QoS for the same network configuration. Small differences on the parameters testing show the implementation of encryption not much burdened the WLAN performance, but it could provide the data security."

"In recent times, thedemand for the real time audio and video applications in wireless networks isvery high due to widespread use of latest wireless communication technologies.Many of these applications require different Quality of Service (QoS) in termsof delay and throughput in the resource constrained wireless networks. In orderto handle the resources effectively and to increase the QoS, proper packetscheduling algorithms need to be developed. Low-latency Queuing (LLQ) is a packet scheduling algorithm whichcombines Strict Priority Queuing(SPQ) to Class-Based Weighted Fair Queuing (CB-WFQ). LLQ places delay sensitive applications suchas voice and video in the SPQ and treat them preferentially over other trafficby allowing the application to be processed and sent first from the SPQ. In this paper, an Enhanced LLQ (ELLQ) is proposed.An additional SPQ is introduced for scheduling the video applicationsseparately along with the dedicated SPQ for voice applications. The performanceof the proposed algorithm is compared with other existing algorithms throughsimulations using the OPNET modeler. Simulation and Statistical results showthat the proposed algorithm has given 1.5 times performance improvement interms of throughput and delay than the existing algorithms for the real timeaudio and video applications."

"In recent times, the demand for the real time audio and video applications in wireless networks is very high due to widespread use of latest wireless communication technologies. Many of these applications require different Quality of Service (QoS) in terms of delay and throughput in the resource constrained wireless networks. In order to handle the resources effectively and to increase the QoS, proper packet scheduling algorithms need to be developed. Low-latency Queuing (LLQ) is a packet scheduling algorithm which combines Strict Priority Queuing (SPQ) to Class-Based Weighted Fair Queuing (CB-WFQ). LLQ places delay sensitive applications such as voice and video in the SPQ and treat them preferentially over other traffic by allowing the application to be processed and sent first from the SPQ. In this paper, an Enhanced LLQ (ELLQ) is proposed. An additional SPQ is introduced for scheduling the video applications separately along with the dedicated SPQ for voice applications. The performance of the proposed algorithm is compared with other existing algorithms through simulations using the OPNET modeler. Simulation and Statistical results show that the proposed algorithm has given 1.5 times performance improvement in terms of throughput and delay than the existing algorithms for the real time audio and video applications."

"Antrian pada router muncul pada saat paket data diterlma melalui interface router dan pada saat proses transmisi paket. Delay antrian berpengaruh besar terhadap delay variasi paket data dan menjadi sangat penting pada komunikasi data real-time seperti Voice over Internet Protocol (VOIP), sehingga pemilihan metode antrian yang tepat akan memperbaiki karakteristik delay jaringan dan meningkatkan tingkat kualitas layanan VoIP.Penulisan skripsi ini bermjuan untuk mcngetahui sejauh mana metode Weighted Fair Queuing (WFQ) dapat memenuhi rekomendasi ITU-T G.l I4 tentang one-way deiay maksimum, dan rekomendasi ITU-T G.l07 tentang E-model yang digunakan sebagai pendekatan matematis terhadap kualitas transmisi, pada topologi jaringan yang disimulasikan.Skripsi ini menganalisa tingkat kualltas layanan VoIP dengan menggunakan metode antrian Weighted Fair Queuing (WFQ). Analisa dilakukan pada simulasi yang dibangun dengan menggunakan piranti Iunak Network Simulator. Parameter kualitas layanan yang digunakan adalah parameter yang ditetapkan oleh ITU-T.Pada topologi jaringan dan skenario yang disimulasikan, metode antrian WFQ mampu memenuhi syarat delay maksimum sesuai dengan rekomendasi G.l 14. Dan berdasarkan perhitungan konversi nilai R faktor ke MOS dengan menggunakan E-Model, WFQ dapat memberikan nilai MOS Iebih dari 4 (empat), yang berarti nilainya balk. Sehingga layanan VOIP layak untuk diimplementaslkan."

"Tugas akhir ini membahas tentang teori antrian dan penerapannya pada Terminal Bis Antar Kota Cililitan dengan menggunakan analisa teori antrian model Saluran Tunggal dan Ganda. Dengan analisa teori antrian model Saluran Tunggal dan Ganda, dapat diketahui apakah sistim pelayanan yang ada di Terminal Bis Antar Kota Cililitan apakah sudah melebihi kapasitasnya ( mencapal keadaan yang optimal).

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This final project discusses the queuing theory and its application at the Cililitan Intercity Bus Terminal using the Single and Dual Channel queuing theory analysis. With the Single and Dual Channel queuing theory analysis, it can be seen whether the service system at the Cililitan Intercity Bus Terminal has exceeded its capacity (reached an optimal state)."