The Experts below are selected from a list of 696 Experts worldwide ranked by ideXlab platform
Haiming Wang - One of the best experts on this subject based on the ideXlab platform.
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Uplink VoIP Performance in E-UTRAN TDD Mode
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008Co-Authors: Dajie Jiang, Haiming WangAbstract:The Long Term Evolution (LTE) of 3GPP radio-access technology aims to develop a framework towards a high-data-rate, low-latency and packet-optimized radio access technology: Evolved Universal Terrestrial Radio Access Networks (E-UTRAN). Its uplink multiple access is Single Carrier FDMA, in order to optimize device power consumption. There were originally two TDD (Time Division Duplex) frame structures with different TTI (Transmission Time Interval) length in E-UTRAN and later, after discussion and harmonization, a new TDD frame structure was proposed and agreed by 3GPP. Voice over Internet Protocol (VoIP) is one of the most important services for future wireless communication networks. This paper evaluates the uplink VoIP performance in the new E-UTRAN TDD mode for different scheduling methods and compares it with the capacity in FDD (Frequency Division Duplex) mode.
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VTC Spring - Uplink VoIP Performance in E-UTRAN TDD Mode
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008Co-Authors: Dajie Jiang, Haiming WangAbstract:The Long Term Evolution (LTE) of 3GPP radio-access technology aims to develop a framework towards a high-data-rate, low-latency and packet-optimized radio access technology: Evolved Universal Terrestrial Radio Access Networks (E-UTRAN). Its uplink multiple access is Single Carrier FDMA, in order to optimize device power consumption. There were originally two TDD (Time Division Duplex) frame structures with different TTI (Transmission Time Interval) length in E-UTRAN and later, after discussion and harmonization, a new TDD frame structure was proposed and agreed by 3GPP. Voice over Internet Protocol (VoIP) is one of the most important services for future wireless communication networks. This paper evaluates the uplink VoIP performance in the new E-UTRAN TDD mode for different scheduling methods and compares it with the capacity in FDD (Frequency Division Duplex) mode.
Dajie Jiang - One of the best experts on this subject based on the ideXlab platform.
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Uplink VoIP Performance in E-UTRAN TDD Mode
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008Co-Authors: Dajie Jiang, Haiming WangAbstract:The Long Term Evolution (LTE) of 3GPP radio-access technology aims to develop a framework towards a high-data-rate, low-latency and packet-optimized radio access technology: Evolved Universal Terrestrial Radio Access Networks (E-UTRAN). Its uplink multiple access is Single Carrier FDMA, in order to optimize device power consumption. There were originally two TDD (Time Division Duplex) frame structures with different TTI (Transmission Time Interval) length in E-UTRAN and later, after discussion and harmonization, a new TDD frame structure was proposed and agreed by 3GPP. Voice over Internet Protocol (VoIP) is one of the most important services for future wireless communication networks. This paper evaluates the uplink VoIP performance in the new E-UTRAN TDD mode for different scheduling methods and compares it with the capacity in FDD (Frequency Division Duplex) mode.
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VTC Spring - Uplink VoIP Performance in E-UTRAN TDD Mode
VTC Spring 2008 - IEEE Vehicular Technology Conference, 2008Co-Authors: Dajie Jiang, Haiming WangAbstract:The Long Term Evolution (LTE) of 3GPP radio-access technology aims to develop a framework towards a high-data-rate, low-latency and packet-optimized radio access technology: Evolved Universal Terrestrial Radio Access Networks (E-UTRAN). Its uplink multiple access is Single Carrier FDMA, in order to optimize device power consumption. There were originally two TDD (Time Division Duplex) frame structures with different TTI (Transmission Time Interval) length in E-UTRAN and later, after discussion and harmonization, a new TDD frame structure was proposed and agreed by 3GPP. Voice over Internet Protocol (VoIP) is one of the most important services for future wireless communication networks. This paper evaluates the uplink VoIP performance in the new E-UTRAN TDD mode for different scheduling methods and compares it with the capacity in FDD (Frequency Division Duplex) mode.
Zhidu Li - One of the best experts on this subject based on the ideXlab platform.
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Performance evaluation of shortened Transmission Time Interval in LTE networks
2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018Co-Authors: Zhening Zhang, Zhidu LiAbstract:As one of the crucial application scenarios, URLLC (Ultra-Reliable and Low Latency Communication) has been put on the agenda with the development of the 5G communication technology. This paper focuses on the downlink evaluation of shortened TTI (Transmission Time Interval), which is the pivotal characteristic of URLLC. In order to describe the varying control overhead of shortened TTI, we propose a model basing on the traffic arriving rate and the TTI length. What's more, we design a downlink scheduling algorithm to take the impact of shortened TTI into consideration. The system-level simulation verifies that shortened TTI is able to achieve high throughput as well as low latency due to low Transmission delay at low system load. However, benefit brought by shortened TTI decreases as the load increases since its higher relative control overhead may lead to non-negligible queuing delay facing high system load. In this situation, system should choose relatively long shortened TTI configurations to reduce the influence of queueing delay.
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WCNC - Performance evaluation of shortened Transmission Time Interval in LTE networks
2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018Co-Authors: Zhening Zhang, Zhidu LiAbstract:As one of the crucial application scenarios, URLLC (Ultra-Reliable and Low Latency Communication) has been put on the agenda with the development of the 5G communication technology. This paper focuses on the downlink evaluation of shortened TTI (Transmission Time Interval), which is the pivotal characteristic of URLLC. In order to describe the varying control overhead of shortened TTI, we propose a model basing on the traffic arriving rate and the TTI length. What's more, we design a downlink scheduling algorithm to take the impact of shortened TTI into consideration. The system-level simulation verifies that shortened TTI is able to achieve high throughput as well as low latency due to low Transmission delay at low system load. However, benefit brought by shortened TTI decreases as the load increases since its higher relative control overhead may lead to non-negligible queuing delay facing high system load. In this situation, system should choose relatively long shortened TTI configurations to reduce the influence of queueing delay.
Michael D. Lemmon - One of the best experts on this subject based on the ideXlab platform.
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CDC - Event triggering in vehicular networked systems with limited bandwidth and deep fading
53rd IEEE Conference on Decision and Control, 2014Co-Authors: Bin Hu, Michael D. LemmonAbstract:Vehicular networked systems consist of numerous vehicles exchanging information over a wireless communication channel. These wireless communication channels are often subject to limited bandwidth and deep fading. Prior work shows that event triggering can generate, on average, larger Transmission Time Interval than periodic scheme by triggering the Transmission as a function of the sampled state. However, it is unclear whether this state-dependent Transmission approach still outperforms the periodic scheme in vehicular networked system where the communication channel often fails to reliably deliver the sampled state due to deep fades. By adopting a bursty fading channel model, this paper presents a new event triggering scheme under which the vehicular system assures a larger Transmission Time Interval than that of periodic scheme while preserving almost sure asymptotic stability in the absence of disturbance, and practical stability in probability with bounded disturbance. In the disturbance free case, the triggering law guarantees increasing Transmission Time Interval as system approaches its equilibrium. In the bounded disturbance case, the probability of system state leaving a bounded set is a function of the Transmission Time Interval, disturbance amplitude, and system's convergence rate. The simulation results of a leader follower example verify the theoretical findings in this paper.
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Event triggering in vehicular networked systems with limited bandwidth and deep fading
53rd IEEE Conference on Decision and Control, 2014Co-Authors: Bin Hu, Michael D. LemmonAbstract:Vehicular networked systems consist of numerous vehicles exchanging information over a wireless communication channel. These wireless communication channels are often subject to limited bandwidth and deep fading. Prior work shows that event triggering can generate, on average, larger Transmission Time Interval than periodic scheme by triggering the Transmission as a function of the sampled state. However, it is unclear whether this state-dependent Transmission approach still outperforms the periodic scheme in vehicular networked system where the communication channel often fails to reliably deliver the sampled state due to deep fades. By adopting a bursty fading channel model, this paper presents a new event triggering scheme under which the vehicular system assures a larger Transmission Time Interval than that of periodic scheme while preserving almost sure asymptotic stability in the absence of disturbance, and practical stability in probability with bounded disturbance. In the disturbance free case, the triggering law guarantees increasing Transmission Time Interval as system approaches its equilibrium. In the bounded disturbance case, the probability of system state leaving a bounded set is a function of the Transmission Time Interval, disturbance amplitude, and system's convergence rate. The simulation results of a leader follower example verify the theoretical findings in this paper.
Zhening Zhang - One of the best experts on this subject based on the ideXlab platform.
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Performance evaluation of shortened Transmission Time Interval in LTE networks
2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018Co-Authors: Zhening Zhang, Zhidu LiAbstract:As one of the crucial application scenarios, URLLC (Ultra-Reliable and Low Latency Communication) has been put on the agenda with the development of the 5G communication technology. This paper focuses on the downlink evaluation of shortened TTI (Transmission Time Interval), which is the pivotal characteristic of URLLC. In order to describe the varying control overhead of shortened TTI, we propose a model basing on the traffic arriving rate and the TTI length. What's more, we design a downlink scheduling algorithm to take the impact of shortened TTI into consideration. The system-level simulation verifies that shortened TTI is able to achieve high throughput as well as low latency due to low Transmission delay at low system load. However, benefit brought by shortened TTI decreases as the load increases since its higher relative control overhead may lead to non-negligible queuing delay facing high system load. In this situation, system should choose relatively long shortened TTI configurations to reduce the influence of queueing delay.
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WCNC - Performance evaluation of shortened Transmission Time Interval in LTE networks
2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018Co-Authors: Zhening Zhang, Zhidu LiAbstract:As one of the crucial application scenarios, URLLC (Ultra-Reliable and Low Latency Communication) has been put on the agenda with the development of the 5G communication technology. This paper focuses on the downlink evaluation of shortened TTI (Transmission Time Interval), which is the pivotal characteristic of URLLC. In order to describe the varying control overhead of shortened TTI, we propose a model basing on the traffic arriving rate and the TTI length. What's more, we design a downlink scheduling algorithm to take the impact of shortened TTI into consideration. The system-level simulation verifies that shortened TTI is able to achieve high throughput as well as low latency due to low Transmission delay at low system load. However, benefit brought by shortened TTI decreases as the load increases since its higher relative control overhead may lead to non-negligible queuing delay facing high system load. In this situation, system should choose relatively long shortened TTI configurations to reduce the influence of queueing delay.
