The Experts below are selected from a list of 1410 Experts worldwide ranked by ideXlab platform
Dongman Lee - One of the best experts on this subject based on the ideXlab platform.
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an efficient mac layer Packet Fragmentation scheme with priority queuing for real time video streaming
Local Computer Networks, 2016Co-Authors: Byoungheon Shin, Jalil Abdullayev, Dongman LeeAbstract:This paper proposes a novel priority-aware Packet Fragmentation extension to high throughput WLANs such as IEEE 802.11n for streaming of H264/AVC encoded videos. Unlike existing Fragmentation schemes, the proposed scheme fragments IP Packets based on the priority of video Packets and the characteristics of MPEG-2 TS, where the original IP Packet is fragmented into smaller IP Packets containing fewer TS Packets and prioritizes individual TS Packets, allocated to an appropriate priority queue. The proposed scheme is evaluated on a testbed with various network congestion levels and channel conditions. The results show that the proposed scheme achieves higher quality of the streaming video in terms of PSNR than existing schemes as the network congestion level and the bit error rate increase.
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a dynamic Packet Fragmentation extension to high throughput wlans for real time h264 avc video streaming
Conference on the Future of the Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
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CFI - A Dynamic Packet Fragmentation Extension to High Throughput WLANs for Real-Time H264/AVC Video Streaming
The 10th International Conference on Future Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
Lin Cai - One of the best experts on this subject based on the ideXlab platform.
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Joint AMC and Packet Fragmentation for Error Control Over Fading Channels
IEEE Transactions on Vehicular Technology, 2010Co-Authors: Ruonan Zhang, Lin CaiAbstract:Error control is critical for wireless networks to combat channel fading and ensure efficient resource utilization. Adaptive modulation and coding (AMC) in the physical (PHY) layer and Packet Fragmentation and automatic repeat request (ARQ) in the link layer are widely used error-control mechanisms. However, how to jointly optimize them in both layers for high-rate wireless networks is still open. In this paper, using the WiMedia ultrawideband (UWB) networks as an example, we first develop a general analytical framework to quantify the link delay and loss performance considering the channel fading, the joint error-control mechanisms, and the arbitrary reservation-based media access control (MAC) protocol. Second, we introduce a cross-layer design to optimize the PHY-layer AMC and the link-layer Packet Fragmentation and propose a joint-adaptation mechanism that is simple to implement and has near-optimal performance. Numerical results reveal that Fragmentation has a greater impact than AMC on the delay and loss performance for marginal links and that the proposed joint-adaptation strategy is efficient for high-rate wireless networks.
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analysis of delayed acknowledgment scheme with Packet Fragmentation of uwb based wpan
Global Communications Conference, 2008Co-Authors: Ruonan Zhang, Lin CaiAbstract:Delayed acknowledgment (Dly-ACK) and Packet Fragmentation are link-layer policies for ultra-wideband (UWB) based wireless personal area networks (WPANs) to improve the channel utilization, defined in both the IEEE 802.15.3a and ECMA-368 standards. On the other hand, the shadowing effect caused by people moving between the transmitter and receiver may severely degrade the received signal power and thus introduce channel variation. In this paper, we develop an analytical framework for studying the performance of the Dly-ACK and Fragmentation over UWB fading channels. A Markov model is used to capture the time-variation of the UWB shadowing channel. The distribution of transmission delay of fragmented Packets and the queuing behavior of the sender's buffer are derived. The system performance of Packet delay and loss are obtained. Validated by simulations, the analytical results provide important insights and guidelines for better supporting high data rate, delay sensitive traffic in UWB-based WPANs.
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GLOBECOM - Analysis of Delayed Acknowledgment Scheme with Packet Fragmentation of UWB-Based WPAN
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008Co-Authors: Ruonan Zhang, Lin CaiAbstract:Delayed acknowledgment (Dly-ACK) and Packet Fragmentation are link-layer policies for ultra-wideband (UWB) based wireless personal area networks (WPANs) to improve the channel utilization, defined in both the IEEE 802.15.3a and ECMA-368 standards. On the other hand, the shadowing effect caused by people moving between the transmitter and receiver may severely degrade the received signal power and thus introduce channel variation. In this paper, we develop an analytical framework for studying the performance of the Dly-ACK and Fragmentation over UWB fading channels. A Markov model is used to capture the time-variation of the UWB shadowing channel. The distribution of transmission delay of fragmented Packets and the queuing behavior of the sender's buffer are derived. The system performance of Packet delay and loss are obtained. Validated by simulations, the analytical results provide important insights and guidelines for better supporting high data rate, delay sensitive traffic in UWB-based WPANs.
Byoungheon Shin - One of the best experts on this subject based on the ideXlab platform.
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an efficient mac layer Packet Fragmentation scheme with priority queuing for real time video streaming
Local Computer Networks, 2016Co-Authors: Byoungheon Shin, Jalil Abdullayev, Dongman LeeAbstract:This paper proposes a novel priority-aware Packet Fragmentation extension to high throughput WLANs such as IEEE 802.11n for streaming of H264/AVC encoded videos. Unlike existing Fragmentation schemes, the proposed scheme fragments IP Packets based on the priority of video Packets and the characteristics of MPEG-2 TS, where the original IP Packet is fragmented into smaller IP Packets containing fewer TS Packets and prioritizes individual TS Packets, allocated to an appropriate priority queue. The proposed scheme is evaluated on a testbed with various network congestion levels and channel conditions. The results show that the proposed scheme achieves higher quality of the streaming video in terms of PSNR than existing schemes as the network congestion level and the bit error rate increase.
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a dynamic Packet Fragmentation extension to high throughput wlans for real time h264 avc video streaming
Conference on the Future of the Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
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CFI - A Dynamic Packet Fragmentation Extension to High Throughput WLANs for Real-Time H264/AVC Video Streaming
The 10th International Conference on Future Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
Jalil Abdullayev - One of the best experts on this subject based on the ideXlab platform.
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an efficient mac layer Packet Fragmentation scheme with priority queuing for real time video streaming
Local Computer Networks, 2016Co-Authors: Byoungheon Shin, Jalil Abdullayev, Dongman LeeAbstract:This paper proposes a novel priority-aware Packet Fragmentation extension to high throughput WLANs such as IEEE 802.11n for streaming of H264/AVC encoded videos. Unlike existing Fragmentation schemes, the proposed scheme fragments IP Packets based on the priority of video Packets and the characteristics of MPEG-2 TS, where the original IP Packet is fragmented into smaller IP Packets containing fewer TS Packets and prioritizes individual TS Packets, allocated to an appropriate priority queue. The proposed scheme is evaluated on a testbed with various network congestion levels and channel conditions. The results show that the proposed scheme achieves higher quality of the streaming video in terms of PSNR than existing schemes as the network congestion level and the bit error rate increase.
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a dynamic Packet Fragmentation extension to high throughput wlans for real time h264 avc video streaming
Conference on the Future of the Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
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CFI - A Dynamic Packet Fragmentation Extension to High Throughput WLANs for Real-Time H264/AVC Video Streaming
The 10th International Conference on Future Internet, 2015Co-Authors: Jalil Abdullayev, Byoungheon Shin, Dongman LeeAbstract:This paper proposes an extension to high throughput WLANs such as IEEE 802.11n and IEEE 802.11ac for efficient streaming of H264/AVC encoded videos. The main idea is to fragment IP Packets containing several TS Packets into smaller IP Packets containing fewer TS Packets which leads to higher transmission success rate and TS level prioritization of H264/AVC frames. Unlike existing Fragmentation schemes, it is done without any modification to the MAC layer at the receiver side. Evaluation results show that the proposed scheme achieves up to 5 dB gain on PSNR and 3.5 times higher goodput than legacy WLANs.
Ruonan Zhang - One of the best experts on this subject based on the ideXlab platform.
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Joint AMC and Packet Fragmentation for Error Control Over Fading Channels
IEEE Transactions on Vehicular Technology, 2010Co-Authors: Ruonan Zhang, Lin CaiAbstract:Error control is critical for wireless networks to combat channel fading and ensure efficient resource utilization. Adaptive modulation and coding (AMC) in the physical (PHY) layer and Packet Fragmentation and automatic repeat request (ARQ) in the link layer are widely used error-control mechanisms. However, how to jointly optimize them in both layers for high-rate wireless networks is still open. In this paper, using the WiMedia ultrawideband (UWB) networks as an example, we first develop a general analytical framework to quantify the link delay and loss performance considering the channel fading, the joint error-control mechanisms, and the arbitrary reservation-based media access control (MAC) protocol. Second, we introduce a cross-layer design to optimize the PHY-layer AMC and the link-layer Packet Fragmentation and propose a joint-adaptation mechanism that is simple to implement and has near-optimal performance. Numerical results reveal that Fragmentation has a greater impact than AMC on the delay and loss performance for marginal links and that the proposed joint-adaptation strategy is efficient for high-rate wireless networks.
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analysis of delayed acknowledgment scheme with Packet Fragmentation of uwb based wpan
Global Communications Conference, 2008Co-Authors: Ruonan Zhang, Lin CaiAbstract:Delayed acknowledgment (Dly-ACK) and Packet Fragmentation are link-layer policies for ultra-wideband (UWB) based wireless personal area networks (WPANs) to improve the channel utilization, defined in both the IEEE 802.15.3a and ECMA-368 standards. On the other hand, the shadowing effect caused by people moving between the transmitter and receiver may severely degrade the received signal power and thus introduce channel variation. In this paper, we develop an analytical framework for studying the performance of the Dly-ACK and Fragmentation over UWB fading channels. A Markov model is used to capture the time-variation of the UWB shadowing channel. The distribution of transmission delay of fragmented Packets and the queuing behavior of the sender's buffer are derived. The system performance of Packet delay and loss are obtained. Validated by simulations, the analytical results provide important insights and guidelines for better supporting high data rate, delay sensitive traffic in UWB-based WPANs.
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GLOBECOM - Analysis of Delayed Acknowledgment Scheme with Packet Fragmentation of UWB-Based WPAN
IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, 2008Co-Authors: Ruonan Zhang, Lin CaiAbstract:Delayed acknowledgment (Dly-ACK) and Packet Fragmentation are link-layer policies for ultra-wideband (UWB) based wireless personal area networks (WPANs) to improve the channel utilization, defined in both the IEEE 802.15.3a and ECMA-368 standards. On the other hand, the shadowing effect caused by people moving between the transmitter and receiver may severely degrade the received signal power and thus introduce channel variation. In this paper, we develop an analytical framework for studying the performance of the Dly-ACK and Fragmentation over UWB fading channels. A Markov model is used to capture the time-variation of the UWB shadowing channel. The distribution of transmission delay of fragmented Packets and the queuing behavior of the sender's buffer are derived. The system performance of Packet delay and loss are obtained. Validated by simulations, the analytical results provide important insights and guidelines for better supporting high data rate, delay sensitive traffic in UWB-based WPANs.
