publications: - title: "OPNETWORK 2008" author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Rosario G. Garroppo" link: "https://researchr.org/alias/rosario-g.-garroppo" - name: "Stefano Giordano" link: "https://researchr.org/alias/stefano-giordano" researchr: "https://researchr.org/publication/WiMAX-VoIP%3A0" cites: 0 citedby: 0 booktitle: "OPNETWORK 2008" kind: "proceedings" key: "WiMAX-VoIP:0" - title: "Using Mobile Agents to Improve Performance of Network Management Operations" author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Colin Pattinson" link: "https://researchr.org/alias/colin-pattinson" - name: " Ebrahim Shaghouei" link: "https://researchr.org/alias/ebrahim-shaghouei" abstract: "Currently, most network management systems operate SNMP (Simple Network Management Protocol). These protocols use the client-server model, on which the management station acts as a client that provides a user interface to the network manager and interacts with agents, which are servers that manage remote access to the Management Information Base (MIB). In certain circumstances (e.g. at times of network stress), this client-server interaction generates significant traffic that overloads the management station. A distributed paradigm is a revision way to perform management functions when networks grow significantly. In this sense, mobile agent is an option to distribute the network management. These agents move to the place where data are stored and select information the user wants. They decentralise processing and control, and, as a consequence, reduce the traffic around the management station, and distribute processing load. The purpose of this study is to investigate the effect of using a mobile agent as compared to a static agent in alleviating loading created by network management protocols and to investigate the performance behaviour of network management concepts using simulation." tags: - "control systems" - "rule-based" - "operating system" - "agent based modeling" - "meta-model" - "protocol" - "data-flow" - "object-role modeling" - "information models" - "Meta-Environment" - "access control" - "process modeling" - "mobile" - "role-based access control" researchr: "https://researchr.org/publication/Network-Management-Mobile-Agent" cites: 0 citedby: 0 booktitle: "PGNET 2003" kind: "inproceedings" key: "Network-Management-Mobile-Agent" - title: "Optimizing system capacity and application delays in WiMAX networks" author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Rosario G. Garroppo" link: "https://researchr.org/alias/rosario-g.-garroppo" - name: "Stefano Giordano" link: "https://researchr.org/alias/stefano-giordano" doi: "10.1109/ISWCS.2009.5285247" abstract: "The IEEE 802.16 technology (WiMAX) is a promising technology for providing last-mile connectivity by radio link due to its large coverage area, low cost of deployment and high speed data rates. However, the maximum number of channels defined in the current system may cause a potential bottleneck and limit the overall system capacity. The aim of this paper is to compare the impact on system performance of different solutions used to mitigate the impairments due to the radio channel. In particular, taking into account the WiMAX system capacity as well as application delays, the paper presents the simulation results obtained when a static QPSK frac12 Modulation and Coding Scheme (MCS) is adopted. Then, the study is aimed at evaluating the improvements introduced by the adoption of an adaptive modulation and coding (AMC) and an AMC jointly with Hybrid Automatic Repeat reQuest (HARQ). Results indicate that the best strategy is to use an aggressive AMC table with HARQ. " tags: - "optimization" - "deployment" - "data-flow" - "coverage" researchr: "https://researchr.org/publication/Adhicandra%3A2009" cites: 0 citedby: 0 booktitle: "ISWCS 2009" kind: "inproceedings" key: "Adhicandra:2009" - title: "Configuration of WiMAX Networks supporting Data and VoIP traffic " author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Rosario G. Garroppo" link: "https://researchr.org/alias/rosario-g.-garroppo" - name: "Stefano Giordano" link: "https://researchr.org/alias/stefano-giordano" abstract: "Due to its large coverage area, low cost of deployment and high speed data rates, WiMAX is a promising technology for providing wireless last-mile connectivity. Physical and MAC layer of this technology refer to the IEEE 802.16e standard, which defines 5 different data delivery service classes that can be used in order to satisfy Quality of Service (QoS) requirements of different applications, such as VoIP, videoconference, FTP, Web, etc. The main aim of the paper is to examine a case of QoS deployment over a cellular WiMAX network. In particular, the paper compares the performance obtained using two different QoS configurations differing from the delivery service class used to transport VoIP traffic, i.e. UGS or ertPS. Results indicate that for delay-sensitive traffic that fluctuates beyond its nominal rate, having the possibility to give back some of its reserved bandwidth, ertPS has the advantage to permit the transmission of BE traffic. " tags: - "deployment" - "web service" - "data-flow" - "web applications" - "coverage" researchr: "https://researchr.org/publication/Adhicandra%3A2008" cites: 0 citedby: 0 booktitle: "OPNETWORK 2008" kind: "inproceedings" key: "Adhicandra:2008" - title: "ISWCS 2009" author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Rosario G. Garroppo" link: "https://researchr.org/alias/rosario-g.-garroppo" - name: "Stefano Giordano" link: "https://researchr.org/alias/stefano-giordano" researchr: "https://researchr.org/publication/WiMAX-ARQ-AMC" cites: 0 citedby: 0 booktitle: "ISWCS 2009" kind: "proceedings" key: "WiMAX-ARQ-AMC" - title: "Performance Evaluation of Network Management Operations" author: - name: "Iwan Adhicandra" link: "http://netgroup.iet.unipi.it/people/iadhicandra.shtml" - name: "Colin Pattinson" link: "https://researchr.org/alias/colin-pattinson" researchr: "https://researchr.org/publication/Network-Management-Mobile-Agent%3A0" cites: 0 citedby: 0 booktitle: "PGNET 2002" kind: "inproceedings" key: "Network-Management-Mobile-Agent:0"