The Experts below are selected from a list of 8100 Experts worldwide ranked by ideXlab platform
Nathan J. Gomes - One of the best experts on this subject based on the ideXlab platform.
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improved ieee 802 11 point coordination function considering fiber delay difference in distributed antenna systems
International Conference on Communications, 2014Co-Authors: Yuting Fan, Nathan J. Gomes, Yitang Dai, Feifei YinAbstract:In this paper, we present an improved IEEE 802.11 wireless local-area network (WLAN) medium access control (MAC) mechanism for simulcast radio-over-fiber-based distributed antenna systems where multiple remote antenna units (RAUs) are connected to one access point (AP). In the improved mechanism, the fiber delay between RAUs and central unit is taken into account in a modification to the conventional point coordination function (PCF) that achieves coordination by a centralized algorithm. Simulation results show that the improved PCF outperforms the distributed coordination function (DCF) in both the basic-access and request/clear-to-send modes in terms of the total throughput and the fairness among RAUs.
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ICC Workshops - Improved IEEE 802.11 point coordination function considering fiber-delay difference in distributed antenna systems
2014 IEEE International Conference on Communications Workshops (ICC), 2014Co-Authors: Yuting Fan, Nathan J. Gomes, Yitang Dai, Feifei YinAbstract:In this paper, we present an improved IEEE 802.11 wireless local-area network (WLAN) medium access control (MAC) mechanism for simulcast radio-over-fiber-based distributed antenna systems where multiple remote antenna units (RAUs) are connected to one access point (AP). In the improved mechanism, the fiber delay between RAUs and central unit is taken into account in a modification to the conventional point coordination function (PCF) that achieves coordination by a centralized algorithm. Simulation results show that the improved PCF outperforms the distributed coordination function (DCF) in both the basic-access and request/clear-to-send modes in terms of the total throughput and the fairness among RAUs.
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analysis of the request to send clear to send exchange in wlan over fiber networks
Journal of Lightwave Technology, 2008Co-Authors: Majlinda Mjeku, Nathan J. GomesAbstract:A study of the effect of the optical path delay on the effectiveness of the request to send/clear to send (RTS/CTS) exchange in high-speed IEEE 802.11 wireless LAN (WLAN) over fiber networks has been carried out. It is shown that although the fiber delay might violate some of the timing boundaries of the medium access control (MAC) protocol, with a careful choice of the RTS threshold parameter, which determines when the RTS/CTS is used, these networks can benefit significantly from the four-way handshake even without the need for modifying the existing protocol.
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Analysis of the Request to send/clear to send Exchange in WLAN Over Fiber Networks
Journal of Lightwave Technology, 2008Co-Authors: Majlinda Mjeku, Nathan J. GomesAbstract:A study of the effect of the optical path delay on the effectiveness of the request to send/clear to send (RTS/CTS) exchange in high-speed IEEE 802.11 wireless LAN (WLAN) over fiber networks has been carried out. It is shown that although the fiber delay might violate some of the timing boundaries of the medium access control (MAC) protocol, with a careful choice of the RTS threshold parameter, which determines when the RTS/CTS is used, these networks can benefit significantly from the four-way handshake even without the need for modifying the existing protocol.
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Performance analysis of 802.11e transmission bursting in fiberfed networks
2008 IEEE Radio and Wireless Symposium, 2008Co-Authors: M. Mjeku, Nathan J. GomesAbstract:A burst transmission mechanism has been defined in the IEEE 802.11e medium access control extension in order to reduce the overheads in protocol operation and improve efficiency. In this paper, we analyze the throughput and delay performance when this mechanism is used with the immediate acknowledgment policy in a fiber-fed wireless LAN (WLAN). It is shown that the extra propagation delay caused by the optical distribution network in the system affects the burst transmission operation in the presence or otherwise of channel errors and affects the optimum thresholds for switching between the basic access and the request-to-send/clear-to-send (RTS/CTS) modes. It is also shown that significant throughput and media access delay improvements can be gained by the use of burst transmission in contention based 802.11e fiber-fed WLANs, regardless of the load in the network.
Yun Sang Park - One of the best experts on this subject based on the ideXlab platform.
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joint fragment size transmission rate and request to send clear to send threshold optimization for ieee 802 11b distributed coordination function
Vehicular Technology Conference, 2005Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Ki Tae Han, Do Hyon Yim, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to non-ideal channel conditions. We have chosen system throughput maximization as the optimization criteria.
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joint fragment size and transmission rate optimization for request to send clear to send mechanism of ieee 802 11b distributed coordination function
Personal Indoor and Mobile Radio Communications, 2005Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Ki Tae Han, Do Hyon Yim, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size and transmission rate optimization for request-to-send/clear-to-send mechanism of IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to nonideal channel conditions. We have chosen system throughput maximization as the optimization criteria
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Joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function
2005 IEEE 61st Vehicular Technology Conference, 1Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Hyon Yim, Ki Tae Han, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to non-ideal channel conditions. We have chosen system throughput maximization as the optimization criteria.
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PIMRC - Joint Fragment Size and Transmission Rate Optimization for Request-to-send/clear-to-send Mechanism of IEEE 802.11b Distributed Coordination Function
2005 IEEE 16th International Symposium on Personal Indoor and Mobile Radio Communications, 1Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Hyon Yim, Ki Tae Han, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size and transmission rate optimization for request-to-send/clear-to-send mechanism of IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to nonideal channel conditions. We have chosen system throughput maximization as the optimization criteria
A.v. Garmonov - One of the best experts on this subject based on the ideXlab platform.
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joint fragment size transmission rate and request to send clear to send threshold optimization for ieee 802 11b distributed coordination function
Vehicular Technology Conference, 2005Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Ki Tae Han, Do Hyon Yim, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to non-ideal channel conditions. We have chosen system throughput maximization as the optimization criteria.
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joint fragment size and transmission rate optimization for request to send clear to send mechanism of ieee 802 11b distributed coordination function
Personal Indoor and Mobile Radio Communications, 2005Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Ki Tae Han, Do Hyon Yim, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size and transmission rate optimization for request-to-send/clear-to-send mechanism of IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to nonideal channel conditions. We have chosen system throughput maximization as the optimization criteria
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Joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function
2005 IEEE 61st Vehicular Technology Conference, 1Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Hyon Yim, Ki Tae Han, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size, transmission rate, and request-to-send/clear-to-send threshold optimization for IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to non-ideal channel conditions. We have chosen system throughput maximization as the optimization criteria.
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PIMRC - Joint Fragment Size and Transmission Rate Optimization for Request-to-send/clear-to-send Mechanism of IEEE 802.11b Distributed Coordination Function
2005 IEEE 16th International Symposium on Personal Indoor and Mobile Radio Communications, 1Co-Authors: A.v. Garmonov, Stanislav Filin, A.y. Savinkov, V.b. Manelis, S.n. Moiseev, M.s. Kondakov, Seok Ho Cheon, Hyon Yim, Ki Tae Han, Yun Sang ParkAbstract:In this paper we theoretically perform joint fragment size and transmission rate optimization for request-to-send/clear-to-send mechanism of IEEE 802.11b distributed coordination function considering both collisions due to system load and frame errors due to nonideal channel conditions. We have chosen system throughput maximization as the optimization criteria
Majlinda Mjeku - One of the best experts on this subject based on the ideXlab platform.
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analysis of the request to send clear to send exchange in wlan over fiber networks
Journal of Lightwave Technology, 2008Co-Authors: Majlinda Mjeku, Nathan J. GomesAbstract:A study of the effect of the optical path delay on the effectiveness of the request to send/clear to send (RTS/CTS) exchange in high-speed IEEE 802.11 wireless LAN (WLAN) over fiber networks has been carried out. It is shown that although the fiber delay might violate some of the timing boundaries of the medium access control (MAC) protocol, with a careful choice of the RTS threshold parameter, which determines when the RTS/CTS is used, these networks can benefit significantly from the four-way handshake even without the need for modifying the existing protocol.
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Analysis of the Request to send/clear to send Exchange in WLAN Over Fiber Networks
Journal of Lightwave Technology, 2008Co-Authors: Majlinda Mjeku, Nathan J. GomesAbstract:A study of the effect of the optical path delay on the effectiveness of the request to send/clear to send (RTS/CTS) exchange in high-speed IEEE 802.11 wireless LAN (WLAN) over fiber networks has been carried out. It is shown that although the fiber delay might violate some of the timing boundaries of the medium access control (MAC) protocol, with a careful choice of the RTS threshold parameter, which determines when the RTS/CTS is used, these networks can benefit significantly from the four-way handshake even without the need for modifying the existing protocol.
Liang Cheng - One of the best experts on this subject based on the ideXlab platform.
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SMC - Modeling network bandwidth of IEEE 802.11 wireless local area networks
2005 IEEE International Conference on Systems Man and Cybernetics, 1Co-Authors: Hua Lin, Liang ChengAbstract:IEEE 802.11 specifies a standard for physical and MAC layers of wireless local area networks (WLANs). In this paper, network bandwidth of an IEEE 802.11 wireless local area network, defined as an aggregated saturated throughput of the network, is studied in both cases of request-to-send/clear-to-send (RTS/CTS) access method and the basic method. A theoretical model for calculating the network bandwidth from signal-to-noise-ratio (SNR) is proposed and it is evaluated by both simulations and experiments. The result shows that the model is very accurate in measuring or predicting the dynamical network bandwidth of an IEEE 802.11 WLAN when the SNR is higher than 2MB.