Voice over IP service and performance in satellite networks

Nguyen, Tuananh; Yegenoglu, F.; Sciuto, A.; Subbarayan, R.

doi:10.1109/35.910604

Cited by 33 publications

(17 citation statements)

References 3 publications

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“…As for the jitter, the mean packet inter-arrival time at the receive side must be roughly close to that at the transmit side, with a small standard deviation. Lastly, in terms of packet corruption and loss, some experiments have shown that the satellite link is quite robust to packet corruption in clear sky or moderately degraded channel environment up to a BER of 10 -5 (that is, Frame Erasure Rate or FER of 2%) [5]. The performance of VoIP over satellite as obtained by Nguyen et al [5] from the COMSAT laboratories will be used as a reference test bench.…”

Section: B Traffic Characterizationmentioning

confidence: 99%

“…The salient Quality of Service (QoS) features of the two types of applications which are envisaged are presented hereafter: -Real-time, delay-sensitive but not or very little loss-sensitive applications: especially VoIP. A strictly minimum bit rate of 5.3 kbps (assuming ITU H.323 G.723.1 ACELP codec) is required [5]. It has been shown however that optimal bandwidth occupation for VoIP over satellite is around 12 kbps.…”

Section: B Traffic Characterizationmentioning

confidence: 99%

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Low bit rate satellite link for emergency communications

Pech¹,

Huang

Bousquet

2008

2008 IEEE International Workshop on Satellite and Space Communications

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This study inserts itself within the framework of the first phase of a post-disaster emergency situation. The purpose here is to propose and study a solution allowing to establish very quickly a minimal low bit rate satellite link in Ku/Ka or Q/V band, while using the available resources of the satellite, a singleuser ground terminal with a low transmission power, a small diameter antenna, and a dedicated Tx/Rx system, characterized by an electric consumption which shall be as low as possible (battery or solar panels). The transmission channel is modeled within the Juzzle open source environment software, with an adaptive strategy based on the DVB-S2 adaptive modulation and coding (ACM) scheme. Keywords-satellite communications, low bit rate, emergency, Ku/Ka/Q/V bands, rain attenuation, channel fading, DVB-S2, ACM, spread spectrum, VoIP, SMS, Juzzle.

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Section: B Traffic Characterizationmentioning

confidence: 99%

Section: B Traffic Characterizationmentioning

confidence: 99%

Low bit rate satellite link for emergency communications

Pech¹,

Huang

Bousquet

2008

2008 IEEE International Workshop on Satellite and Space Communications

View full text Add to dashboard Cite

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“…A strictly minimum bit rate of 5.3 kbps (assuming ITU H.323 G.723.1 ACELP codec) is required (Nguyen et al, 2001). It has been shown however that optimal bandwidth occupation for VoIP over satellite is around 12 kbps.…”

Section: Satellite Communications 166mentioning

confidence: 99%

“…As for the jitter, the mean packet inter-arrival time at the receive side must be roughly close to that at the transmit side, with a small standard deviation. Lastly, in terms of packet corruption and loss, some experiments have shown that the satellite link is quite robust to packet corruption in clear sky or moderately degraded channel environment with a BER of up to a 10 -5 (that is, Frame Erasure Rate or FER of 2%) (Nguyen et al, 2001). The performance of VoIP over satellite as obtained by Nguyen et al (Nguyen et al, 2001) from the COMSAT laboratories will be used as a reference test bench.…”

Section: Satellite Communications 166mentioning

confidence: 99%

Design and Simulation of a DVB-S2-like Adaptive Air interface Designed for Low Bit Rate Emergency Communications Satellite Link in Ku/Ka/Q/V Bands

Pech¹,

Robert²,

Duverdier³

et al. 2010

Satellite Communications

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“…These are even higher in a wireless network especially when client devices are roaming between hot spots, unlike circuitswitched communications where voice quality is consistent throughout a call, the quality of a VoIP call can vary on almost a packet-by-packet basis (XACCT, 2001). Also, the fact that several standards exist creates interoperability problems causing communications difficulties between Gateways from different vendors because, many vendors have proprietary solutions, and even Gateways supporting H.323 standard may not work with each others (Nguyen et al, 2001). …”

Section: Framework For Enabling Ip Telephony In Construction Sitesmentioning

confidence: 99%

Construction Sites Communications: A Framework for Enabling the Use of Internet Protocol Telephony in Construction Sites (IPTCS)

Beyh¹,

Kagioglou²

2003

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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Over the past decades, construction firms have been using several off-the-shelf telecommunications services to provide the communication means necessary to their mobile personnel on the jobsite. Despite this the traditional telecommunication systems are nowadays offering a wider range of services to the construction industry, but they are still considered expensive and inflexible. This paper reports on the possibilities of using Internet Protocol (IP) Telephony in the construction industry. The take up of this technology within the industry has not been observed despite the technological advancements in this area. This could be attributed to two main reasons, the slow nature of construction firms to embrace new technologies on the one hand, and the lack of awareness of technologies' developers and systems integrators to take into consideration the unique nature of construction sites environments needs on the other hand. This issue could possibly be resolved if the two sectors come to understand one another's requirements. To eliminate the underlying gap between the parties and overcome the implementation barriers of IP Telephony, the authors propose a theoretical framework, referred to in this paper as IPTCS (Internet Protocol Telephony in Construction Sites). It is expected that such a framework will add value to both the services providers and the construction industry supply chain alike.

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Voice over IP service and performance in satellite networks

Cited by 33 publications

References 3 publications

Low bit rate satellite link for emergency communications

Low bit rate satellite link for emergency communications

Design and Simulation of a DVB-S2-like Adaptive Air interface Designed for Low Bit Rate Emergency Communications Satellite Link in Ku/Ka/Q/V Bands

Construction Sites Communications: A Framework for Enabling the Use of Internet Protocol Telephony in Construction Sites (IPTCS)

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