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    Anastasi, G., Bacioccola, A., Cicconetti, C., Lenzini, L., Mingozzi, E. & Vallati, C. Performance Evaluation of Power Management for Best Effort Applications in IEEE 802.16 Networks 2008 Proc. European Wireless 2008  inproceedings DOI URL 
    Abstract: Reduced energy consumption is a crucial aspect of mobile Broadband Wireless Access (BWA) networks, which are expected to be populated by battery-operated devices, like mobile phones and palmtops. For this reason the IEEE 802.16e, which is one of the front-runner competitors in this field, specifies a set of power saving mechanisms to be employed by the Base Station (BS) and Mobile Stations (MSs) to reduce the amount of time the latter spend with the wireless interface on. These mechanisms are classified into three class types, which are designed for different types of applications. In this paper we focus on class type I, which fits the typical requirements of best-effort traffic. With class type I, an MS with power saving enabled alternates between sleep and listening periods. The duration of the sleep periods increases by a factor 2 each time listening period ends, up to a maximum sleep window size. Since the standard does not provide guidelines for setting the above parameters, which are negotiated between the BS and MSs when setting up a power saving class, we evaluate via simulation their impact on the performance, in terms of both application-specific metric, i.e. delay or throughput depending on the type of traffic, and the amount of energy saved.
    BibTeX:
    @inproceedings{anastasi08performance,
      author = {G. Anastasi and A. Bacioccola and C. Cicconetti and L. Lenzini and E. Mingozzi and C. Vallati},
      title = {Performance Evaluation of Power Management for Best Effort Applications in IEEE 802.16 Networks},
      booktitle = {Proc. European Wireless 2008},
      year = {2008},
      url = {anastasi08performance.pdf},
      doi = {http://dx.doi.org/10.1109/EW.2008.4623923}
    }
    
    Bacioccola, A., Cicconetti, C., Eklund, C., Lenzini, L., Li, Z. & Mingozzi, E. IEEE 802.16: History, status and future trends 2009 Computer Communications
    Vol. In Press, Accepted Manuscript, pp. -  
    article DOI URL 
    BibTeX:
    @article{bacioccola200980216,
      author = {A. Bacioccola and C. Cicconetti and C. Eklund and L. Lenzini and Z. Li and E. Mingozzi},
      title = {IEEE 802.16: History, status and future trends},
      journal = {Computer Communications},
      year = {2009},
      volume = {In Press, Accepted Manuscript},
      pages = { - },
      url = {http://www.sciencedirect.com/science/article/B6TYP-4XNF43R-1/2/f0a4cc67a688adb985355e0ea97d642f},
      doi = {DOI: 10.1016/j.comcom.2009.11.003}
    }
    
    Bacioccola, A., Cicconetti, C., Erta, A., Lenzini, L. & Mingozzi, E. Bandwidth Allocation with Half-Duplex Stations in IEEE 802.16 Wireless Networks 2007 IEEE Trans. Mobile Comput.
    Vol. 6(12), pp. 1384-1397 
    article DOI URL 
    Abstract: IEEE 802.16 is a recent IEEE standard for broadband wireless access networks. In IEEE 802.16 networks, the medium access control (MAC) protocol is centralized and explicitly supports quality of service (QoS). That is to say, access to the medium by a number of subscriber stations (SSs) is centrally controlled by one base station (BS), which is responsible for allocating bandwidth to several MAC connections in order to provide them with the negotiated QoS guarantees. However, although the network can be operated in frequency division duplex (FDD) mode (that is, transmissions from the BS (downlink) and SSs (uplink) occur on separate frequency channels), the standard supports SSs with half-duplex capabilities. This means that they are equipped with a single radio transceiver which can be used either to transmit in the uplink direction or to receive in the downlink direction. This may severely hamper the capacity to support QoS. Therefore, in order to allocate bandwidth, an IEEE 802.16 BS has to solve two related issues: (1) how it can schedule bandwidth grants to SSs in order to meet the QoS requirements of their connections and (2) how it can coordinate the uplink and downlink scheduled grants so as to support half-duplex capabilities. In this paper, we derive sufficient conditions for a set of scheduled grants to be allocated so that the transmission of each half-duplex SS does not overlap with its reception. Based on this, we propose a grant allocation algorithm, namely, the half-duplex allocation (HDA) algorithm, which always produces a feasible grant allocation provided that the sufficient conditions are met. HDA has a computation complexity of 0(n), where n is the number of grants to be allocated. Finally, we show that the definition of HDA allows us to address the two issues mentioned above by following a pipeline approach. This is when scheduling and allocation are implemented by separate and independently running algorithms, which are just loosely coupled with- each other. We show via extensive simulation
    BibTeX:
    @article{bacioccola07bandwidth,
      author = {A. Bacioccola and C. Cicconetti and A. Erta and L. Lenzini and E. Mingozzi},
      title = {Bandwidth Allocation with Half-Duplex Stations in IEEE 802.16 Wireless Networks},
      journal = {IEEE Trans. Mobile Comput.},
      year = {2007},
      volume = {6},
      number = {12},
      pages = {1384-1397},
      url = {bacioccola07bandwidth.pdf},
      doi = {http://dx.doi.org/10.1109/TMC.2007.1064}
    }
    
    Bacioccola, A., Cicconetti, C., Erta, A., Lenzini, L. & Mingozzi, E. A Downlink Data Region Allocation Algorithm for IEEE 802.16e OFDMA 2007 Proc. ICICS 2007  inproceedings URL 
    Bacioccola, A., Cicconetti, C., Erta, A., Lenzini, L., Mingozzi, E. & Moilanen, J. Current Technology Developments of WiMax Systems 2009 , pp. 31-59  inbook DOI URL 
    Bacioccola, A., Cicconetti, C., Erta, A. & Mingozzi, E. Throughput Analysis of Best Effort Traffic in IEEE 802.16/WiMAX 2007 Proc. European Wireless 2007  inproceedings URL 
    BibTeX:
    @inproceedings{bacioccola07throughput,
      author = {A. Bacioccola and C. Cicconetti and A. Erta and and E. Mingozzi},
      title = {Throughput Analysis of Best Effort Traffic in IEEE 802.16/WiMAX},
      booktitle = {Proc. European Wireless 2007},
      year = {2007},
      url = {bacioccola07throughput.pdf}
    }
    
    Bacioccola, A., Cicconetti, C. & Stea, G. User-level Performance Evaluation of VoIP Using ns-2 2007 Proc. NSTools 2007  inproceedings URL 
    BibTeX:
    @inproceedings{bacioccola07userlevel,
      author = {A. Bacioccola and C. Cicconetti and G. Stea},
      title = {User-level Performance Evaluation of VoIP Using ns-2},
      booktitle = {Proc. NSTools 2007},
      year = {2007},
      url = {bacioccola07userlevel.pdf}
    }
    
    Cicconetti, C. WiMAX/MobileFi: Advanced Research and Technology 2007 , pp. 149-176  inbook  
    BibTeX:
    @inbook{cicconetti07support,
      author = {C. Cicconetti},
      title = {WiMAX/MobileFi: Advanced Research and Technology},
      publisher = {Auerbach Publications},
      year = {2007},
      pages = {149-176}
    }
    
    Cicconetti, C. Performance evaluation of the IEEE 802.16 MAC protocol for Broadband Wireless Access 2007 School: University of Pisa  phdthesis URL 
    BibTeX:
    @phdthesis{cicconetti07performance-3,
      author = {C. Cicconetti},
      title = {Performance evaluation of the IEEE 802.16 MAC protocol for Broadband Wireless Access},
      school = {University of Pisa},
      year = {2007},
      url = {cicconetti07performance-3.pdf}
    }
    
    Cicconetti, C., Akyildiz, I.F. & Lenzini, L. FEBA: A Bandwidth Allocation Algorithm for Service Differentiation in IEEE 802.16 Mesh Networks 2009 IEEE/ACM Trans. Networking  article URL 
    BibTeX:
    @article{cicconetti09feba,
      author = {C. Cicconetti and I. F. Akyildiz and L. Lenzini},
      title = {FEBA: A Bandwidth Allocation Algorithm for Service Differentiation in IEEE 802.16 Mesh Networks},
      journal = {IEEE/ACM Trans. Networking},
      year = {2009},
      url = {cicconetti09feba.pdf}
    }
    
    Cicconetti, C., Akyildiz, I.F. & Lenzini, L. WiMsh: A Simple and Efficient Tool for Simulating IEEE 802.16 Wireless Mesh Networks in ns-2 2009 Proc. ICST SIMUTools 2009  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti09wimsh,
      author = {C. Cicconetti and I. F. Akyildiz and L. Lenzini},
      title = {WiMsh: A Simple and Efficient Tool for Simulating IEEE 802.16 Wireless Mesh Networks in ns-2},
      booktitle = {Proc. ICST SIMUTools 2009},
      year = {2009},
      url = {cicconetti09wimsh.pdf}
    }
    
    Cicconetti, C., Akyildiz, I.F. & Lenzini, L. Bandwidth Balancing in Multi-Channel IEEE 802.16 Wireless Mesh networks 2007 INFOCOM  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti07bandwidth,
      author = {C. Cicconetti and I. F. Akyildiz and L. Lenzini},
      title = {Bandwidth Balancing in Multi-Channel IEEE 802.16 Wireless Mesh networks},
      booktitle = {INFOCOM},
      year = {2007},
      url = {cicconetti07bandwidth.pdf}
    }
    
    Cicconetti, C., Eklund, C., Lenzini, L. & Mingozzi, E. Quality of Service Support in IEEE 802.16 Networks 2006 IEEE Network
    Vol. 20, pp. 50-55 
    article DOI URL 
    Abstract: During the last few years, users ail over the world have become more and more accustomed to the availability of broadband access. This has boosted the use of a wide variety both of established and recent multimedia applications. However, there are cases where it is too expensive for network providers to serve a community of users. This is typically the case in rural and suburban areas, where there is slow deployment (or no deployment at all) of traditional wired technologies for broadband access (e.g., cable modems, xDSL). In those cases, the most promising opportunity rests with broadband wireless access technologies, such as the IEEE 802.16, also known as WiMAX. One of the features of the MAC layer of 802.16 is that it is designed to differentiate service among traffic categories with different multimedia requirements. This article focuses on mechanisms that are available in an 802.16 system to support quality of service (QoS) and whose effectiveness is evaluated through simulation
    BibTeX:
    @article{cicconetti06quality,
      author = {C. Cicconetti and C. Eklund and L. Lenzini and E. Mingozzi},
      title = {Quality of Service Support in IEEE 802.16 Networks},
      journal = {IEEE Network},
      year = {2006},
      volume = {20},
      pages = {50-55},
      url = {cicconetti06quality.pdf},
      doi = {http://dx.doi.org/10.1109/MNET.2006.1607896}
    }
    
    Cicconetti, C., Erta, A., Gardellin, V., Lenzini, L. & Mingozzi, E. End-to-end Bandwidth Reservation in IEEE 802.16 Mesh Networks 2007 Proc. MeshTech 2007  inproceedings DOI URL 
    Abstract: IEEE 802.16 mesh does not include support for traffic flows with strict quality of service requirements. In this paper, we propose an end-to-end bandwidth reservation protocol (EBRP) in the backhaul of a wireless mesh network using IEEE 802.16 mesh. The distinctive feature of EBRP is that it is carried out at the medium access control (MAC) layer. Therefore, EBRP not only makes the resource reservation process extremely rapid, but it also allows the resources available to be allocated efficiently by exploiting technology-specific information available at the MAC. We present EBRP as part of a framework which also includes support for distributed call admission control (CAC). Preliminary simulation results obtained with VoIP traffic and nodes arranged in a grid topology are presented to show the effectiveness of EBRP under controlled channel conditions.
    BibTeX:
    @inproceedings{cicconetti07end,
      author = {C. Cicconetti and A. Erta and V. Gardellin and L. Lenzini and E. Mingozzi},
      title = {End-to-end Bandwidth Reservation in IEEE 802.16 Mesh Networks},
      booktitle = {Proc. MeshTech 2007},
      year = {2007},
      url = {cicconetti07end.pdf},
      doi = {http://dx.doi.org/10.1109/MOBHOC.2007.4428719}
    }
    
    Cicconetti, C., Erta, A., Lenzini, L. & Mingozzi, E. Performance Evaluation of the IEEE 802.16 MAC for QoS Support 2007 IEEE Trans. Mobile Comput.
    Vol. 6, pp. 26-38 
    article DOI URL 
    Abstract: The IEEE 802.16 is a standard for broadband wireless communication in metropolitan area networks (MAN). To meet the QoS requirements of multimedia applications, the IEEE 802.16 standard provides four different scheduling services: unsolicited grant service (UGS), real-time polling service (rtPS), non-real-time polling service (nrtPS), and Best Effort (BE). The paper is aimed at verifying, via simulation, the effectiveness of rtPS, nrtPS, and BE (but UGS) in managing traffic generated by data and multimedia sources. Performance is assessed for an IEEE 802.16 wireless system working in point-to-multipoint (PMP) mode, with frequency division duplex (FDD), and with full-duplex subscriber stations (SSs). Our results show that the performance of the system, in terms of throughput and delay, depends on several factors. These include the frame duration, the mechanisms for requesting uplink bandwidth, and the offered load partitioning, i.e., the way traffic is distributed among SSs, connections within each SS, and traffic sources within each connection. The results also highlight that the rtPS scheduling service is a very robust scheduling service for meeting the delay requirements of multimedia applications
    BibTeX:
    @article{cicconetti07performance,
      author = {C. Cicconetti and A. Erta and L. Lenzini and E. Mingozzi},
      title = {Performance Evaluation of the IEEE 802.16 MAC for QoS Support},
      journal = {IEEE Trans. Mobile Comput.},
      year = {2007},
      volume = {6},
      pages = {26-38},
      url = {cicconetti07performance},
      doi = {http://dx.doi.org/10.1109/TMC.2007.250669}
    }
    
    Cicconetti, C., Erta, A., Lenzini, L. & Mingozzi, E. Performance evaluation of the mesh election procedure of ieee 802.16/wimax 2007 MSWiM '07: Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems, pp. 323-327  inproceedings DOI URL 
    Abstract: IEEE 802.16 is a recent standard for Broadband Wireless Access networks, which includes a mesh mode operation for distributed channel access of peering nodes. In accordance with the IEEE 802.16 MAC protocol, time is partitioned into frames of fixed duration, each one divided into two sub-frames, for control and data transmission, respectively. Slots in the control sub-frame are used by nodes to negotiate the schedule of transmissions in data sub-frames, and are accessed by means of a collision-free distributed procedure, namely the mesh election procedure. In this paper, we analyze the performance of the mesh election procedure by means of extensive simulations, and identify the system configuration parameters that have the most impact on the performance of control message transmission. The analysis is carried out under the assumption that the wireless link is error-free.
    BibTeX:
    @inproceedings{cicconetti07performance-2,
      author = {Claudio Cicconetti and Alessandro Erta and Luciano Lenzini and Enzo Mingozzi},
      title = {Performance evaluation of the mesh election procedure of ieee 802.16/wimax},
      booktitle = {MSWiM '07: Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems},
      publisher = {ACM},
      year = {2007},
      pages = {323--327},
      url = {cicconetti07performance-2},
      doi = {http://doi.acm.org/10.1145/1298126.1298181}
    }
    
    Cicconetti, C., Garcia-Osma, M.L., Masip, X., Silva, J., Santoro, G., Stea, G. & Tarasiuk, H. Simulation Model for End-to-End QoS across Heterogeneous Networks 2005 Proc. IPS MoMe  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti05simulation,
      author = {C. Cicconetti and M. L. Garcia-Osma and X. Masip and J. Silva and G. Santoro and G. Stea and H. Tarasiuk},
      title = {Simulation Model for End-to-End QoS across Heterogeneous Networks},
      booktitle = {Proc. IPS MoMe},
      year = {2005},
      url = {cicconetti05simulation}
    }
    
    Cicconetti, C., Gardellin, V., Lenzini, L. & Mingozzi, E. PaMeLA: A Joint Channel Assignment and Routing algorithm for multi-radio multi-channel Wireless Mesh Networks with grid topology 2009 Mobile Adhoc and Sensor Systems, 2009. MASS '09. IEEE 6th International Conference on, pp. 199-207  inproceedings DOI  
    BibTeX:
    @inproceedings{5336997,
      author = {Cicconetti, C. and Gardellin, V. and Lenzini, L. and Mingozzi, E.},
      title = {PaMeLA: A Joint Channel Assignment and Routing algorithm for multi-radio multi-channel Wireless Mesh Networks with grid topology},
      booktitle = {Mobile Adhoc and Sensor Systems, 2009. MASS '09. IEEE 6th International Conference on},
      year = {2009},
      pages = {199-207},
      doi = {http://dx.doi.org/10.1109/MOBHOC.2009.5336997}
    }
    
    Cicconetti, C., Lenzini, L. & Mingozzi, E. Interference-aware Distributed Scheduling in TDMA Wireless Mesh Networks 2008 Proc. IEEE MASS 2008  inproceedings DOI URL 
    Abstract: We propose five slot scheduling algorithms for wireless mesh networks (WMNs) using a time division multiple access (TDMA)-based medium access control (MAC) protocol. A preliminary comparative study is carried out through simulation
    BibTeX:
    @inproceedings{cicconetti08interference,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi},
      title = {Interference-aware Distributed Scheduling in TDMA Wireless Mesh Networks},
      booktitle = {Proc. IEEE MASS 2008},
      year = {2008},
      url = {cicconetti08interference.pdf},
      doi = {http://dx.doi.org/10.1109/MAHSS.2008.4660024}
    }
    
    Cicconetti, C., Lenzini, L. & Mingozzi, E. Scheduling and Dynamic Relocation for IEEE 802.11s Mesh Deterministic Access 2008 Sensor, Mesh and Ad Hoc Communications and Networks, 2008. SECON '08. 5th Annual IEEE Communications Society Conference on, pp. 19-27  inproceedings DOI URL 
    Abstract: Deployment of Wireless Mesh Networks (WMNs) is becoming increasingly popular due to the low-impact and low- cost features of wireless devices. This is especially true for WMNs based on IEEE 802.11 which, however, does not include native support for multi-hop relaying. This gap is being filled by the Task Group 's' of the IEEE 802.11 which has recently published an amendment in order to add mesh functions to the popular standard IEEE 802.11. Among the enhancements proposed, Mesh Deterministic Access (MDA) allows mesh routers to negotiate periodic collision-free transmission opportunities, called MDAOPs, to the Medium Access Control (MAC) layer on a hop- by-hop manner. Control messages are exchanged to advertise the reserved MDAOPs in the two-hop neighborhood. MDA lays the foundations for enabling QoS provisioning functions in IEEE 802.11s WMNs, such as end-to-end bandwidth reservation, call admission control, and traffic engineering. In this paper we study the problem of scheduling MDAOPs, which is left unspecified by the standard, and propose two baseline algorithms. Furthermore, we provide evidence that performance under MDA can be significantly degraded by the unknown interference of traffic flows outside the two-hop neighborhood. A dynamic relocation procedure is proposed in order to combat this phenomenon, thus providing traffic flows established in the WMN with stable performance. This procedure does not need any modifications to the standard MDA procedure. To the best of our knowledge, this is the first study that tackles this problem in the context of IEEE 802.11s. The effectiveness of the proposed algorithms is evaluated by means of a packet-level simulation.
    BibTeX:
    @inproceedings{cicconetti08scheduling,
      author = {Cicconetti, C. and Lenzini, L. and Mingozzi, E.},
      title = {Scheduling and Dynamic Relocation for IEEE 802.11s Mesh Deterministic Access},
      booktitle = {Sensor, Mesh and Ad Hoc Communications and Networks, 2008. SECON '08. 5th Annual IEEE Communications Society Conference on},
      year = {2008},
      pages = {19--27},
      url = {cicconetti08scheduling.pdf},
      doi = {http://dx.doi.org/10.1109/SAHCN.2008.13}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. Design and performance analysis of the real-time HCCA scheduler for IEEE 802.11e WLANs 2007 Computer networks (Elsevier)
    Vol. 51(9), pp. 2311-2325 
    article DOI URL 
    Abstract: This paper presents a new scheduling algorithm, called Real-Time HCCA (RTH), devised to support Quality of Service (QoS) at the flow level in an IEEE 802.11e network using the Hybrid Coordinator Function (HCF) Controlled Channel Access (HCCA) function. RTH separates online activities which take place at the frame transmission timescale, from offline activities which take place at the flow lifetime timescale. Complex computations are relegated to offline activities, while online tasks are kept as simple as possible. More specifically, at admission control time, RTH computes a periodic schedule based on the well-known Earliest Deadline First algorithm for 802.11e Traffic Streams (TSs). In doing so, the Stack Resource Policy is applied to account for non-pre-emptability of frame transmissions. Furthermore, the parameters are configured so as to reduce the MAC overhead due to polling uplink TSs. On the other hand, online scheduling is enforced simply by reading the pre-computed schedule, at little or no computational cost. RTH performance is assessed in terms of the admission control limit and of the amount of channel capacity that is left for contention-based access. Under both criteria, RTH is shown to outperform the sample scheduler proposed in IEEE 802.11e.
    BibTeX:
    @article{cicconetti07design,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {Design and performance analysis of the real-time HCCA scheduler for IEEE 802.11e WLANs},
      journal = {Computer networks (Elsevier)},
      year = {2007},
      volume = {51},
      number = {9},
      pages = {2311-2325},
      url = {cicconetti07design.pdf},
      doi = {http://dx.doi.org/10.1016/j.comnet.2007.01.027}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. An Efficient Cross Layer Scheduler for Multimedia Traffic in Wireless Local Area Networks with IEEE 802.11e HCCA 2007 ACM Mobile Computing and Communications Review
    Vol. 11(3), pp. 31-46 
    article DOI URL 
    Abstract: This paper proposes a scheduling algorithm, namely Wireless Timed Token Protocol (WTTP), for the Hybrid Coordination Function (HCF) Controlled Channel Access (HCCA) in IEEE 802.11e. WTTP provides traffic streams with a minimum reserved rate, as required by the standard, and it accounts for two types of traffic streams simultaneously, depending on the corresponding application: constant bit rate, which are served according to their rate, and variable bit rate traffic streams. The latter are guaranteed a minimum rate, but they are also allowed to exploit unused bandwidth, which preserves small access delays in case of bursty arrivals. Additionally, WTTP shares the capacity which is not reserved for QoS traffic streams transmissions among traffic flows with no specific QoS requirements. We also propose a strategy for the QoS Access Point to infer the idle/busy status of the uplink transmission buffers, based on cross layer information made available at the MAC by the application layer, which allows channel capacity to be saved. WTTP exhibits O(1) per packet computational complexity. We evaluate the performance of WTTP via simulation under different traffic conditions, and we investigate its resilience to variations of different system parameters.
    BibTeX:
    @article{cicconetti07efficient,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {An Efficient Cross Layer Scheduler for Multimedia Traffic in Wireless Local Area Networks with IEEE 802.11e HCCA},
      journal = {ACM Mobile Computing and Communications Review},
      year = {2007},
      volume = {11},
      number = {3},
      pages = {31-46},
      url = {cicconetti07efficient.pdf},
      doi = {http://doi.acm.org/10.1145/1317425.1317428}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. Efficient Provisioning of Real-Time QoS Guarantees in IEEE 802.11e WLANs 2006 Proc. European Wireless  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti06efficient,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {Efficient Provisioning of Real-Time QoS Guarantees in IEEE 802.11e WLANs},
      booktitle = {Proc. European Wireless},
      year = {2006},
      url = {cicconetti06efficient.pdf}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. Scheduling Algorithm for Providing Real-Time QoS Guarantees in 802.11e WLANs 2005 Proc. Broadnets, pp. 836-838  inproceedings DOI URL 
    Abstract: In this paper we propose a scheduling algorithm for supporting quality of service (QoS) in an IEEE 802.11e network using the HCF controlled channel access (HCCA) function. The algorithm consists of an offline procedure that generates a service schedule over a base period, and an online procedure that applies the latter to actually schedule transmission opportunities to HCCA flows
    BibTeX:
    @inproceedings{cicconetti05scheduling,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {Scheduling Algorithm for Providing Real-Time QoS Guarantees in 802.11e WLANs},
      booktitle = {Proc. Broadnets},
      year = {2005},
      pages = {836-838},
      note = {Poster},
      url = {cicconetti05scheduling.pdf},
      doi = {http://dx.doi.org/10.1109/ICBN.2005.1589685}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. A Software Architecture for Simulating IEEE 802.11e HCCA 2005 Proc. IPS MoMe, pp. 97-104  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti05software,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {A Software Architecture for Simulating IEEE 802.11e HCCA},
      booktitle = {Proc. IPS MoMe},
      year = {2005},
      pages = {97-104},
      url = {cicconetti05software.pdf}
    }
    
    Cicconetti, C., Lenzini, L., Mingozzi, E. & Stea, G. WTTP: A Scheduling Algorithm for Supporting QoS in IEEE 802.11e 2005 Proc. European Wireless, pp. 231-239  inproceedings URL 
    BibTeX:
    @inproceedings{cicconetti05wttp,
      author = {C. Cicconetti and L. Lenzini and E. Mingozzi and G. Stea},
      title = {WTTP: A Scheduling Algorithm for Supporting QoS in IEEE 802.11e},
      booktitle = {Proc. European Wireless},
      year = {2005},
      pages = {231-239},
      note = {Invited paper},
      url = {cicconetti05wttp.pdf}
    }
    
    Cicconetti, C., Mingozzi, E. & Lenzini, L. A Bandwidth Request Reiteration Mechanism for IEEE 802.16 Wireless Networks Wireless Networks (Elsevier)  article DOI  
    Abstract: The IEEE 802.16 is a leading technology for Broadband Wireless Access (BWA), where a Base Station (BS) provides a set of Subscriber Stations (SSs) with first-mile network access. Each SS has multiple connections directed to the BS, which are assigned bandwidth on a demand basis. Specifically, the BS allocates part of the channel as request slots, which are accessed by best-effort connections in a random access manner to transmit bandwidth requests. Although bandwidth requests sent by different SSs may collide the standard does not specify an explicit acknowledgment mechanism. This, and the bandwidth being assigned by the BS to each SS as a whole, may lead to critical inconsistencies between the perception of the SSs? requirements at the BS and the actual SSs? requirements, which in turn may entail SS service disruption. While the standard suggests that an SS should regularly update the BS about the backlog of its connections, the algorithm to do so is left unspecified. In this paper we propose a simple, yet effective, mechanism to be employed by the SSs, called Bandwidth Request Reiteration (BR2), which prevents deadlock from occurring. Using detailed packet-level simulation, we compare BR2 to an alternative approach based on timeout, and show that BR2 achieves better performance, in terms of the average transfer delay, while it does not incur a significant additional overhead, in terms of MAC signaling.
    BibTeX:
    @article{cicconetti09bandwidth,
      author = {C. Cicconetti and E. Mingozzi and L. Lenzini},
      title = {A Bandwidth Request Reiteration Mechanism for IEEE 802.16 Wireless Networks},
      journal = {Wireless Networks (Elsevier)},
      doi = {http://dx.doi.org/10.1007/s11276-009-0165-2}
    }
    
    Cicconetti, C., Mingozzi, E. & Stea, G. An Integrated Framework for Enabling Effective Data Collection and Statistical Analysis with ns-2 2006 Proc. WNS2  inproceedings DOI URL 
    Abstract: The Network Simulator 2 (ns-2) is an open source tool for network simulation. When planning for large-scale simulation experiments, an efficient and flexible data collection and a statistically sound output data analysis are important aspects to keep in mind. Unfortunately, ns-2 offers little support for data collection, and statistical analysis of the simulation results is most often performed offline, using either home made code or available packages, which are not integrated with ns-2. In this paper we describe two complementary contributions: the first one consists of a set of C++ modules, that allow a flexible and efficient data collection; the second one is a software framework, which is fully integrated with ns-2, that performs all the operations required to carry out simulation experiments in a statistically sound way. Our framework allows a user to significantly reduce the postprocessing overhead and to save simulation time, especially with large-scale simulations. Our code is publicly available at [3].
    BibTeX:
    @inproceedings{cicconetti06integrated,
      author = {C. Cicconetti and E. Mingozzi and G. Stea},
      title = {An Integrated Framework for Enabling Effective Data Collection and Statistical Analysis with ns-2},
      booktitle = {Proc. WNS2},
      year = {2006},
      url = {cicconetti06integrated.pdf},
      doi = {http://doi.acm.org/10.1145/1190455.1190466}
    }
    
    Cicconetti, C., Mingozzi, E. & Vallati, C. A 2^k r factorial analysis tool for ns2measure 2009 International Workshop on Network Simulation Tools (NSTools)  inproceedings  
    BibTeX:
    @inproceedings{cicconetti20092k,
      author = {C. Cicconetti and E. Mingozzi and C. Vallati},
      title = {A 2^k r factorial analysis tool for ns2measure},
      booktitle = {International Workshop on Network Simulation Tools (NSTools)},
      year = {2009}
    }
    
    Perrone, L.F., Cicconetti, C., Stea, G. & Ward, B.C. On The Automation of Computer Network Simulators 2009 Proc. ICST SIMUTools 2009  inproceedings URL 
    BibTeX:
    @inproceedings{felipe09automation,
      author = {L. F. Perrone and C. Cicconetti and G. Stea and B. C. Ward},
      title = {On The Automation of Computer Network Simulators},
      booktitle = {Proc. ICST SIMUTools 2009},
      year = {2009},
      url = {felipe09automation.pdf}
    }
    

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