Delay Related Issues in Integrated Voice and Data Networks

Gruber, J.

doi:10.1109/tcom.1981.1095070

Cited by 84 publications

(14 citation statements)

References 50 publications

(8 reference statements)

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“…Variable delay depends on the number of links, utilization, packet size, and link speed. Delays may often be over 100 ms [4].…”

Section: The Packet Voice Synchronization Problemmentioning

confidence: 99%

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Techniques for Packet Voice Synchronization

Montgomery¹

1983

IEEE J. Select. Areas Commun.

145

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This paper discusses several aspects of the packet voice synchronization problem, and techniques that can be used to address it. These techniques estimate in some way the delay encountered by each packet and use the delay estimate to determine how speech is reconstructed. The delay estimates produced by these techniques can be used in managing the flow of information in the packet network to improve overall performance. Interactions of packet voice synchronization techniques with other network design issues are also discussed.

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“…Variable delay depends on the number of links, utilization, packet size, and link speed. Delays may often be over 100 ms [4].…”

Section: The Packet Voice Synchronization Problemmentioning

confidence: 99%

“…One of the most significant involves the reconstruction of a continuous stream of voice from a set of packets sent through the network [4], [5], [6]. With packetized voice, each packet contains a segment of speech plus some header information.…”

Section: Introductionmentioning

confidence: 99%

Techniques for Packet Voice Synchronization

Montgomery¹

1983

IEEE J. Select. Areas Commun.

145

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“…Subsequent increases in the hangover time cause a more gradual increase in the duration of talkspurts and silence periods. We conclude that, to achieve silence periods of relatively long durations (i.e., 250-300 ms), a hangover time of approximately 100 ms is necessary, in line with [24]. Approximately 1% of packets have interpacket times between 39-41 s, 1% between 59-61 ms, and 1% between 79-81 ms. Packets in these intervals are being transmitted after one, two, or three consecutive packets have been suppressed by the silence detection algorithm.…”

Section: Voice Trac Characteristicssupporting

confidence: 67%

“…The tolerance of packet voice for playback adjustment assumes that talkspurts are generally isolated from each other by relatively long silence periods, a property reported in empirical studies [6,8]. To ensure this isolation, voice protocols enforce a minimum intertalkspurt time, or hangover time, when marking talkspurt boundaries [24].…”

Section: Delay Jittermentioning

confidence: 99%

Retransmission-based Error Control for Continuous Media Traffic in Packet-switched Networks

Dempsey

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“…Among the access systems utilizing the voice activation technique, the PRMA (packet reservation multiple access) system [9] is one in which the voice channel is efficiently multiplexed while solving the problem of the voice processing delay [10], which has been the most serious problem in the application of the voice activation technique. The PRMA system, however, has the problem that packet loss occurs at the resumption of the voiced period in a high-traffic environment, which results in interruption of voice at the resumption of speech (head termination) or interruption of the call during speech (forced termination).…”

Section: Introductionmentioning

confidence: 99%

An adaptive access control scheme for a reservation TDMA/adaptive modulation system

Watanabe

Sampei

Morinaga

2002

Electron. Comm. Jpn. Pt. I

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SUMMARYIn realizing multimedia communication systems in land mobile communications, high-frequency efficiency must be achieved, while satisfying various requirements for transmission quality depending on the media. In the proposed system, voice and the data of long message size are transmitted by the reservation TDMA (time division multiple access) system, and data of shorter message size are transmitted by the slotted ALOHA system, using slots which are not used for voice or long data. In order to ensure a larger number of idle slots for short data transmission, the voice activation technique and adaptive modulation are utilized in voice transmission. This paper considers the reservation TDMA/adaptive modulation system, and the transmission of voice/data integrated traffic at high speed and high efficiency through the common radio channel. An adaptive access control system is proposed in which the threshold for separating long and short data is automatically controlled according to traffic variation. It is verified by a simulation that the proposed system is effective in integrating data with high efficiency and in reducing delay in data transmission, while maintaining the voice transmission capacity.

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Delay Related Issues in Integrated Voice and Data Networks

Cited by 84 publications

References 50 publications

Techniques for Packet Voice Synchronization

Techniques for Packet Voice Synchronization

Retransmission-based Error Control for Continuous Media Traffic in Packet-switched Networks

An adaptive access control scheme for a reservation TDMA/adaptive modulation system

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