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Abstract
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| A common communications convergence scenario which is being adopted in personal communictions relates to the combination of wireless and cellular networks by the use of multimode terminals. Since most of the wireless networks were initially dimensioned only for data communications, this paper shows how voice over wireless LAN dimensioning could be addressed under the optimal network throughput and the perspective of voice quality, using a simple approach. The maximum number of simultaneous users resultin from throughput is limited by the collisions taking place in the shared medium with the statiscal contention protocol. The voice quality is conditioned by the delay and the packet loss in the contention protocol. Both approaches are analyzed within the scope of the voice codecs commonly used in voice over wireless LANs, to conclude that voice dimensionang based on network throughput and voice quality show complementary results. Additionally the use of low rate codecs in voice over wireles LANs is advantageous for the network performance point of view but may produce pooe voice quality results. Mid range codecs like G729 could represent a trade-off for quality throughput. For these reasons, voice quality and wireless network throughput have to be taken into account in the network admission control, design and depliyment to ensure a satisfactory user experience. The impact of handoff interval of wireless convergent. | |
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International
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Si |
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JCR
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Si |
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Title
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WIREL NETW |
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ISBN
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1572-8196 |
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Impact factor JCR
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0,741 |
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Impact info
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Volume
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x |
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Journal number
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2 |
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From page
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x |
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To page
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x |
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Month
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ABRIL |
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Ranking
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