0000000000894371

AUTHOR

O. Fresan

showing 2 related works from this author

Dynamic Packet Bundling for VoIP Transmission Over Rel'7 HSUPA with 10ms TTI Length

2007

In this paper, the system level optimization of the voice over IP transmission in the HSUPA system, configured with a 10 ms TTI length, is analyzed. The study considers the release 7 improvements to HSUPA, in terms of the DPCCH gating concept. A dynamic activated MAC layer bundling of two VoIP packets in a single frame is proposed and compared against the single packet per frame transmission by means of quasi-static system level simulations.

Voice over IPComputer sciencebusiness.industryNetwork packetComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSFrame (networking)Real-time computingSingle frameSystem level optimizationDPCCHTransmission (telecommunications)System levelbusinessComputer network2007 4th International Symposium on Wireless Communication Systems
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VoIP end-to-end performance in HSPA with packet age aided HSDPA scheduling

2008

In this paper, we present an enhanced VoIP scheduling for the high speed downlink packet access (HSDPA) in UMTS, which takes the age of the VoIP packet into account. The downlink capacity can be significantly improved by this way, especially for shorter uplink transmission delay. In order to quantify the achievable performance improvement, we present results obtained from extensive system-level uplink and downlink simulations. Inter alia, it is shown that using the proposed scheme can lead to an increase in the downlink cell capacity of up to 16%. By applying the proposed method, the downlink performance can be improved considerably while the uplink performance remains the same, which ensur…

Voice over IPComputingMethodologies_SIMULATIONANDMODELINGComputer sciencebusiness.industryCode division multiple accessNetwork packetComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSReal-time computingHigh-Speed Downlink Packet Accessscheduling performance analysisData_CODINGANDINFORMATIONTHEORYScheduling (computing)Channel capacityEnd-to-end principleHSPATelecommunications linkbusinessUMTS frequency bandsComputer network2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
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