Title :
Multi-User Queuing Analysis Considering AMC for Wireless VoIP Services
Author :
Lee, Howon ; Cho, Dong-Ho
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., KAIST, Daejeon, South Korea
Abstract :
We propose a new framework to analyze performance considering finite-length queuing and adaptive modulation and coding (AMC) for multi-user VoIP services in wireless communication systems. We formulate an uplink VoIP system as two-dimensional discrete-time Markov chain (DTMC) based on a Markov modulated Poisson process (MMPP) traffic model and MCS (modulation and coding scheme)-level set transition reflecting users´ channel variations. We extend transition modeling of MCS-level for single-user to transition modeling of MCS-level set for multi-user. Throughout our DTMC formulation, we present various performance metrics, such as average queue-length, the average number of arrived and serviced packets, and packet dropping probability.
Keywords :
Internet telephony; Markov processes; adaptive codes; adaptive modulation; discrete time systems; queueing theory; radio networks; telecommunication traffic; Markov modulated Poisson process traffic model; adaptive coding; adaptive modulation; finite-length queuing; multi-user queuing analysis; packet dropping probability; serviced packets; two-dimensional discrete-time Markov chain; wireless VoIP services; Computer science; Frequency; Internet telephony; Measurement; Modulation coding; Performance analysis; Queueing analysis; Throughput; Traffic control; Wireless communication;
Conference_Titel :
Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3437-4
DOI :
10.1109/ICCW.2009.5208097
