Access-network association policies for media streaming in heterogeneous environments
Author(s)
Parandehgheibi, Ali; Medard, Muriel; Ozdaglar, Asuman E.; Shakkottai, Srinivas
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We study the design of media streaming applications in the presence of multiple heterogeneous wireless access methods with different throughputs and costs. Our objective is to analytically characterize the trade-off between the usage cost and the Quality of user Experience (QoE), which is represented by the probability of interruption in media playback and the initial waiting time. We model each access network as a server that provides packets to the user according to a Poisson process with a certain rate and cost. Blocks are coded using random linear codes to alleviate the duplicate packet reception problem. Users must take decisions on how many packets to buffer before playout, and which networks to access during playout. We design, analyze and compare several control policies with a threshold structure. We formulate the problem of finding the optimal control policy as an MDP with a probabilistic constraint. We present the HJB equation for this problem by expanding the state space, and exploit it as a verification method for optimality of the proposed control law.
Date issued
2010-12Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer ScienceJournal
IEEE Conference on Decision and Control
Publisher
Institute of Electrical and Electronics Engineers
Citation
ParandehGheibi, A. et al. “Access-network association policies for media streaming in heterogeneous environments.” Decision and Control (CDC), 2010 49th IEEE Conference on. 2010. 960-965. © 2010, IEEE
Version: Final published version
Other identifiers
INSPEC Accession Number: 11848814
ISBN
978-1-4244-7745-6
ISSN
0743-1546