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dc.contributor.authorChoi, Baek-Young
dc.contributor.authorKim, Jung Hwan, 1970-
dc.contributor.authorBeard, Cory
dc.date.issued2009-09-16
dc.description.abstractWe study the problem of multiple packet bundling to improve spectral efficiency in cellular networks. The packet size of real-time data, such as VoIP, is often very small. However, the use of time division multiplexing (TDM) limits the number of VoIP users supported, because a packet has to wait until it receives a time slot. Packet bundling can alleviate such a problem by sharing a time slot among multiple users. A recent revision of cdma2000 1xEV-DO introduces the concept of the multi-user packet (MUP) in the downlink to overcome limitations on the number of time slots. However, the efficacy of packet bundling is not well understood, particularly in the presence of time varying channels. We propose a novel QoS and channel aware packet bundling algorithm that uses adaptive modulation and coding. We show that channel utilization can be significantly increased by delaying some real-time packets slightly within their QoS requirements. We validate our study through OPNET simulation with a complete EV-DO implementation.en
dc.identifier.citationJung Hwan Kim; Baek-Young Choi; Beard, C.; , "QoS and channel aware packet bundling for VoIP traffic in cellular networks," Teletraffic Congress, 2009. ITC 21 2009. 21st International , pp.1-8, 15-17 Sept. 2009en
dc.identifier.isbn978-1-4244-4744-2
dc.identifier.urihttp://hdl.handle.net/10355/8177
dc.publisherIEEEen
dc.subjectAdaptive Modulationen
dc.subjectCellular radioen
dc.subjectTime division multiplexingen
dc.subjectTime-varying channelsen
dc.subject.lcshComputer networks -- France -- Congressesen
dc.subject.lcshInternet telephonyen
dc.subject.lcshTelecommunication--Trafficen
dc.titleQoS and channel aware packet bundling for VoIP traffic in cellular networksen
dc.typeArticleen
dc.typePreprinten


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