On the quality of VoIP with DCCP for satellite communications

How many times have ever asked yourself: "Can I trust my satellite experiments' outcome?". Performing experiments on real satellite system can either be (1) costly, as the radio resource may be scarce or (2) not possible, as you can hardly change the waveforms transmitted by the satellite platform. Moreover, assessing user applications QoE can hardly be done using only simulated environments while the QoS modeling of a satellite system can often lead to non-conclusive or ambiguous results. The aim of this paper is to bring out representative solutions allowing the networking community to drive consistent experiments using open-source tools. To this end, we compare Mininet and OpenSAND satellite emulator to a real satellite access provided by CNES. We consider VoIP traffic to analyze the trade-off between reliability of the results, ease of use and reproducibility of the experiments. Pros and cons Result fidelity Recommended VoIP use cases Satellite QoE Satellite QoS Real satellite access [2] Pros: realism, transparency, advanced satellite features (e.g., performance-enhancing proxies) Cons: infrastructure access, shared access for some commercial offers, cost, complex architecture Mean Opinion Score Packets dropped Average jitter Max. one-way delay Performance evaluation, tests prior to commercial deployments Mininet [3] Pros: easy deployment on a single machine, shared user space with virtualized network Cons: user should create satellite topology from scratch using hosts, switches and Mininet's API Mean Opinion Score Packets dropped Average jitter Max. one-way delay Stress tests OpenSAND [4] Pros: fine-grained configuration (e.g., carriers, modulation types), emulation of end-to-end satellite communication system with resource allocation Cons: several machines required (3), manual management of the whole system Mean Opinion Score Packets dropped Average jitter Max. one-way delay Performance evaluation, system dimensioning

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“…and QoS metrics (oneway delay, packet probability loss, etc.) are used as inputs to compute these resulting QoE metrics as in [6]- [8].…”

Section: A Voice Over Ip and Qoementioning

confidence: 99%

Making Trustable Satellite Experiments: An Application to a VoIP Scenario

Auger¹,

Lochin

Kuhn

2019

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)

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“…The packets' size is 210 Bytes. This configuration allows to simulate VoIP traffic [17]. However, our version of HARQ uses packets with a size of 1115 bytes.…”

Section: Transport Protocol and Trafficmentioning

confidence: 99%

Controlled Delay Scheduler for VoIP over LEO constellations on LMS channels

Tauran

Lochin

Lacan

et al. 2018

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASM

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Satellite transmissions can suffer from high channel impairments, especially on the link between a satellite and a mobile end-user. To cope with these errors, physical and link layer reliability schemes have been introduced at the price of an end-to-end delay increase resulting in high jitter. Unfortunately, both the delay and the jitter negatively impacts on multimedia traffic. As a matter of fact, not taking into account the channel state greatly decreases the Quality of Experience (QoE) of VoIP users. In this paper, we propose to solve this issue by scheduling data transmission as a function of the channel condition. We first investigate existing scheduling mechanisms and analyze their performance for VoIP traffic with the objective to lower both latency and jitter, which are the most important metrics to achieve a consistent VoIP service. We select the best candidate among several schedulers and propose a novel algorithm specifically designed to carry VoIP over LEO constellations. Our simulations show that in some scenarios, we double the QoE of VoIP users.

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“…With the rapid development of satellite communication systems , an increasing number of mobile users are employing these systems for interpersonal communication. For traditional satellite communication systems, a geostationary satellite is responsible for establishing communication channels among mobile users in the geosynchronous equatorial orbit (GEO).…”

Section: Introductionmentioning

confidence: 99%

Secure anonymous authentication scheme without verification table for mobile satellite communication systems

Tsai

2013

Satell Commun Network

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An authentication scheme is one of the most basic and important security mechanisms for satellite communication systems because it prevents illegal access by an adversary. Lee et al. recently proposed an efficient authentication scheme for mobile satellite communication systems. However, we observed that this authentication scheme is vulnerable to a denial of service (DoS) attack and does not offer perfect forward secrecy. Therefore, we propose a novel secure authentication scheme without verification table for mobile satellite communication systems. The proposed scheme can simultaneously withstand DoS attacks and support user anonymity and user unlinkability. In addition, the proposed scheme is based on the elliptic curve cryptosystem, has low client-side and server-side computation costs, and achieves perfect forward secrecy.KEY WORDS: authentication scheme; denial of service attack (DoS attack); mobile satellite communication systems; user anonymity; user unlinkability INTRODUCTIONWith the rapid development of satellite communication systems [1][2][3][4][5][6][7], an increasing number of mobile users are employing these systems for interpersonal communication. For traditional satellite communication systems, a geostationary satellite is responsible for establishing communication channels among mobile users in the geosynchronous equatorial orbit (GEO). However, because the distance between the geostationary satellite and the earth is approximately 22,300 miles, it has a signal latency problem. Thus, several non-GEO satellite communication systems have been developed such as low-earth-orbit (LEO) satellite communication systems [3,6,7]. Although LEO satellite communication systems are convenient for mobile users, serious problems result from this convenience. Specifically, the following two satellite communication system problems require resolution: (1) Security is a basic requirement for satellite communication systems. Messages that are transmitted using satellite communication systems are always transmitted via insecure wireless channels. Thus, adversaries with sufficient resources might be able to modify or interrupt these messages before they reach the intended destination. (2) Because mobile devices have low computational capacity compared with personal computers, adaptive protocols cannot place high computation demands on the client side. Thus, the majority of security protocols are unsuitable for satellite communication systems because they have heavy computation costs on the mobile user side.An authentication scheme is very crucial for satellite communication systems because it prevents illegal access by an adversary. In LEO satellite communication systems, users are required to register on the network control center (NCC). Figure 1 shows the general authentication system architecture C1: User can choose his/her identity; C2: mutual authentication; C3: user anonymity; C4: user unlinkability; C5: without leak out secret; C6: prevention of an impersonation attack; C7: prevention of a DoS attack; C8: The N...

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On the quality of VoIP with DCCP for satellite communications

Cited by 5 publications

References 20 publications

Making Trustable Satellite Experiments: An Application to a VoIP Scenario

Making Trustable Satellite Experiments: An Application to a VoIP Scenario

Controlled Delay Scheduler for VoIP over LEO constellations on LMS channels

Secure anonymous authentication scheme without verification table for mobile satellite communication systems

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