Distributed sender scheduling for multimedia transmission in wireless mobile peer-to-peer networks

Si, Pengbo; Yu, F. Richard; Ji, Hong; Leung, Victor C. M.

doi:10.1109/twc.2009.080550

Cited by 32 publications

(16 citation statements)

References 27 publications

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“…We model the wireless channel as a finite state Markov chain (FSMC), which is widely used in the literature [13]- [15]. We assume there are M states and we have V =…”

Section: Channel Modelmentioning

confidence: 99%

Optimal clustering and rate allocation for uplink coordinated multi-point (CoMP) systems with delayed channel state information (CSI)

Cai

Senarath

2013

2013 IEEE International Conference on Communications (ICC)

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Coordinated multi-point (CoMP) is a promising technology in next generation cellular networks to enhance the cell-edge performance under universal frequency reuse. In uplink CoMP, the transmitted signals from user equipments are cooperatively processed by multiple base stations assuming there is perfect channel state information (CSI) shared by those base stations. However, practical systems can only obtain imperfect CSI which suffers from quantization errors and especially delay introduced by channel estimation and signalling over backhaul networks. In this paper, we consider the optimal clustering and rate allocation problem in CoMP systems where the CSI feedback via backhaul is delayed. We model such system in the framework of networked Markov decision process (networked-MDP), which is equivalent to a partial observable Markov decision process (POMDP). We find out an optimal policy for such POMDP, which is computational inexpensive. Extensive simulations show promising performance gain of the proposed scheme over existing scheme which makes the decisions merely based on the current observation.

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“…We model the wireless channel as a finite state Markov chain (FSMC), which is widely used in the literature [13]- [15]. We assume there are M states and we have V =…”

Section: Channel Modelmentioning

confidence: 99%

Optimal clustering and rate allocation for uplink coordinated multi-point (CoMP) systems with delayed channel state information (CSI)

Cai

Senarath

2013

2013 IEEE International Conference on Communications (ICC)

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“…As will be discussed, ATC uses bidirectional radio frequency (RF) data communication between the trains and control locations distributed along the tracks (wayside).The use of a track circuit to determine the location of a train is called wayside centric. Wayside centric means that there are devices located near the rails that are employed to detect the presence of trains [13].…”

Section: B Train Control Systemmentioning

confidence: 99%

Train Control System for Efficient Track Usage and Reduce Road Traffic

Maharaja¹

2013

IOSR-JCE

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Automatic Train Control (ATC) is the term for a general class of train protection systems for railways that involves some sort of speed control mechanism in response to external inputs. ATC systems continuously monitor all movements of the trains on lines and at stations and provide safe signaling. A large number of automatic functions support the high speeds possible and enabling the line and network resources to be utilized to maximum capacity. ATC use to schedule multiple trains between two stations with small meter gap between adjutant trains. So the railway department can run more train by using the same track without accident problem. Population explosion has resulted in a series of problems, such as traffic jam, environment pollution, and energy crisis. This project focus on channel estimation errors and the tradeoff between MIMO multiplexing gain and diversity gain in making handoff decisions. The handoff problem is formulated as a partially observable Markov decision process (POMDP), and the optimal handoff policy can be derived to minimize the handoff latency.

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“…FSMC models have been widely accepted in the literature as an effective approach to characterize the correlation structure of the fading process, including satellite, indoor, Rayleigh fading, Ricean fading, and Nakagami fading channels [39][40][41][42][43][44][45]. Considering FSMC models may enable substantial performance improvement over the schemes with memoryless channel models [46].…”

Section: Channel State Transition Probabilitymentioning

confidence: 99%

Handoff management in communication-based train control networks using stream control transmission protocol and IEEE 802.11p WLANs

Zhu

Ning

et al. 2012

J Wireless Com Network

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Communication-based train control (CBTC) network is an automated control network for railways that ensures the safe operation of rail vehicles using data communications. CBTC networks have stringent requirements for communication availability and latency. Wireless local area network (WLAN) is a popular choice in CBTC networks due to the available commercial-off-the-shelf WLAN equipments. However, handoffs in WLANs may result in communication interruption and long latency in WLANs-based CBTC networks. In this article, we propose a handoff management scheme for CBTC networks using stream control transmission protocol (SCTP) and IEEE 802.11p WLANs to provide high communication availability and low latency in CBTC networks. We formulate the handoff decision problem as a stochastic Semi-Markov Decision Process (SMDP) with the objectives of minimizing the handoff latency and maximizing the SCTP throughput. Simulation results are presented to show that the proposed scheme can significantly improve the handoff performance in CBTC networks.

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Distributed sender scheduling for multimedia transmission in wireless mobile peer-to-peer networks

Cited by 32 publications

References 27 publications

Optimal clustering and rate allocation for uplink coordinated multi-point (CoMP) systems with delayed channel state information (CSI)

Optimal clustering and rate allocation for uplink coordinated multi-point (CoMP) systems with delayed channel state information (CSI)

Train Control System for Efficient Track Usage and Reduce Road Traffic

Handoff management in communication-based train control networks using stream control transmission protocol and IEEE 802.11p WLANs

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