KauNet: A Versatile and Flexible Emulation System

This is a poster on the KauNet network emulation system. As compared to other emulation system, KauNet is deterministic. The poster shows how patterns enforce determinism and how patterns can be used to emulate a satellite channel at the IP level

Using Triggers for Emulation of Opportunistic Networking

Opportunistic networks do not require the availability of an end-to-end path, but may instead take advantage of tem- porary connectivity opportunities. Opportunistic networks pose a challenge for network emulation as the traditional em- ulation setup where application/transport endpoints send/ receive packets from the network following a black box approach is no longer applicable. Instead opportunistic networking protocols and applications need to react to the dynamics of the underlying network beyond what is conveyed through the exchange of packets. In order to support emulation evaluations for such challenging applications we in this paper introduce the concept of emulation triggers that can emulate arbitrary cross-layer feedback and that are synchronized with the emulated scenario. The design and implementation of triggers in the KauNet emulator are described. The use of triggers in the context of opportunistic networking is brie y sketched

W-NINE: a two-stage emulation platform for mobile and wireless systems

More and more applications and protocols are now running on wireless networks. Testing the implementation of such applications and protocols is a real challenge as the position of the mobile terminals and environmental effects strongly affect the overall performance. Network emulation is often perceived as a good trade-off between experiments on operational wireless networks and discrete-event simulations on Opnet or ns-2. However, ensuring repeatability and realism in network emulation while taking into account mobility in a wireless environment is very difficult. This paper proposes a network emulation platform, called W-NINE, based on off-line computations preceding online pattern-based traffic shaping. The underlying concepts of repeatability, dynamicity, accuracy and realism are defined in the emulation context. Two different simple case studies illustrate the validity of our approach with respect to these concepts

IP-Level Satellite Link Emulation with KauNet

Distributed applications and transport protocols communicating over a satellite link may react very strongly to conditions specific to that kind of link. Providing a evaluation framework to allow tests of real implementations of such software in that context is quite a challenging task. In this paper we demonstrate how the use of the general-purpose KauNet IP-level emulator combined with satellite-specific packet loss patterns can help by reproducing losses and delays experienced on a satellite link with a simple Ethernet LAN setup. Such a platform is an essential tool for developers performing continuous testing as they provide new features for e.g. video codecs or transport-level software like DCCP and its congestion control components

TTIP Negotiations: interest groups, anti-TTIP civil society campaigns and public opinion

The Transatlantic Trade and Investment Partnership (TTIP) was intended to create jobs and boost the economies on both sides of the Atlantic. However, constituency support was difficult to garnish, and negotiations were frozen in late 2016, leaving their conclusion in doubt. What led to this stage? Why has an agreement been elusive? Using an array of indicators this paper argues that a major reason was the extensive and professionally structured public mobilization campaign conducted by European civil society organizations (CSOs). This shifted public opinion across Europe, which in turn impacted policy. Our research contributes to the literatures on trade, lobbying, and transatlantic relations, with relevance beyond TTIP. The paper discusses how generalized and diffused interests and public opinion are impacting an area of public policy (trade) traditionally influenced predominantly by lobbying from narrowly focused interests

The Public Debate over Transatlantic Trade and Investment Partnership and Its Underlying Assumptions

The Transatlantic Trade and Investment Partnership (TTIP) negotiations have become the centre of debate in EU trade policy, where the European Commission and civil society organizations are key actors. This article argues that a key reason why TTIP has become so controversial has to do with the nature of the arguments used by each side. The main arguments in favour of TTIP emphasize the economic and geostrategic benefits (...

Why TTIP is an unprecedented geopolitical game-changer, but not a Polanyian moment

This paper looks at the TTIP from a trade policy perspective. It argues that while TTIP is an unprecedented bilateral agreement, it does not constitute a Polanyian moment. TTIP is unprecedented in both EU and international trade policy terms because it offers an alternative to WTO multilateralism. Never before has bilateralism offered such a 'best alternative to no agreement' (BATNA) to members of the core decision-making body of the WTO negotiating arm, making TTIP an unprecedented geopolitical game-changer. The anti-TTIP campaign, however, has not been driven either by geopolitical or trade liberalization concerns but by fears about EU bargaining power. By strategically focusing on the potential impact on public policy and safety standards, normative arguments promulgated by opponents to TTIP reflect concerns with perceived threats to the EU status quo, and a willingness to preserve the same. The US is presented (implicitly) as more powerful than the EU, and therefore perceived as able to impose its preferences which are considered too neo-liberal

The Saga Continue: contestation of EU trade policy

Trade policy constitutes a significant part of the European Union's (EU) foreign policy. The EU's emphasis on global trade liberalization in the 21st century is most evident through its ever increasing number of modern, deep, bilateral trade agreements. However, aspects of EU trade policy and bilateral agreements are hotly contested. We examine this by comparing the rhetoric employed by European civil society organizations from 2013 through 2020. While the focus of contestation and the rhetorical strategy remained fairly consistent, the effects of contestation (politicization, institutionalization of new processes) changed, largely due to the presence or absence of negotiations on a deep trade agreement with an economic and political equal perceived to have greater bargaining power. This study contributes to the literature on norm contestation and politicization by providing empirical evidence that mere contestation is insufficient for politicization, and by showing show that perceived bargaining strength influences trade politicization

Supporters' responses to contested trade negotiations: the European Commission's rhetoric on the Transatlantic Trade and Investment Partnership

Negotiations on the Transatlantic Trade and Investment Partnership (TTIP) commenced in 2013, and soon became the most controversial bilateral trade agreement negotiations ever attempted by the European Union (EU). When trying to understand the escalating debate over the proposed agreement, most analyses have highlighted opposition to the deal, especially from civil society organizations. However, a full understanding of the debate surrounding TTIP requires analysis of supporters' responses, as these changed in response to strategies used by opponents of the agreement. This article uses a novel approach in trade policy scholarship¿rhetorical analysis¿to focus on the European Commission Trade Directorate's response to contestation over TTIP. Drawing on work on the 'rhetoric of reaction', this article identifies the rhetorical strategies used by EU trade commissioners from 2013 to 2016. It outlines the evolution of the rhetoric and accompanying changes in process and policy, providing insights on the impact of TTIP politicization on the guiding principles of the EU's trade policy