MUM: a middleware for the provisioning of continuous services to mobile users

Bellavista, Paolo; Corradi, Antonio

doi:10.1109/iscc.2004.1358454

Cited by 17 publications

(24 citation statements)

References 15 publications

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“…Experimental results obtained in previous work have shown that HA migration and activation at new PBs takes less than 400ms; DRCP lasts about 100ms; macro handoff flow re-direction and merging require about 500ms; global handoff flow reconfiguration requires 340ms for PS interposition and 100ms for RTP streaming activation (with a JMF server); we assume 250ms as roundtrip time [6]. In other words, handoff duration is between 440ms and 1500ms for micro handoff, about 1900ms for macro handoff, and about 2300ms for global handoff.…”

Section: Resultsmentioning

confidence: 99%

“…Proxy-based middleware solutions can enhance the traditional client-to-server interaction model by decoupling the two endpoints with the insertion of an active service path [6]. Active service paths show their effectiveness when there is the need for runtime reconfiguration of only limited path segments and for decentralizing management operations to intermediate nodes traversed by service flows, thus improving scalability [12,13].…”

Section: Design Guidelines For Handoff Management Infrastructuresmentioning

confidence: 99%

“…The architecture of the MUM infrastructure to dynamically activate intermediate nodes for quality control and adaptation of WI multimedia streaming has already been presented elsewhere [6]; in the following, the paper originally focuses on MUM proactive management of Wi-Fi micro, macro, and global handoff. MUM grants service continuity by performing proactive handoff management at the application level, with WI-multimedia-specific protocols that aim at minimizing server signaling and client requests for flow redirection.…”

Section: Mum Proxies For Proactive Handoff Managementmentioning

confidence: 99%

“…The paper describes a proactive handoff management solution integrated with our Mobile agent-based Ubiquitous multimedia Middleware (MUM) 1 , an applicationlevel proxy-based infrastructure to support both streaming quality adaptation and session continuity, independently of WI client roaming [6]. On the one hand, MUM performs quality of service management by exploiting mobile middleware proxies dynamically distributed to intermediate nodes along the activated service paths between clients and servers.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Application-Level Middleware to Proactively Manage Handoff in Wireless Internet Multimedia

Bellavista

Corradi

2005

Management of Multimedia Networks and Services

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Abstract. New deployment scenarios tend to consider the requirement of session continuity for service provisioning, especially multimedia streaming, to limited heterogeneous portable devices roaming among wireless localities. In particular, multimedia streaming should not experience any interruption while clients roam in wired-wireless integrated networks based on the standard besteffort Internet. The paper proposes an application-level middleware approach to proactively overcome Wi-Fi handoff and maintain multimedia session continuity in the wireless Internet by exploiting mobile proxies running on the wired network. Mobile middleware proxies locally support resource-limited clients, avoid packet losses during handoffs, pre-fetch local buffers with multimedia contents before handoff occurrence, and possibly reconfigure/renegotiate ongoing sessions after handoffs. Experimental results show that, notwithstanding the application-level implementation, mobile proxies can avoid streaming discontinuities with good efficiency in wireless-wired integrated networks even if their pro-activity is based on simple and lightweight handoff prediction techniques.

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Section: Resultsmentioning

confidence: 99%

Section: Design Guidelines For Handoff Management Infrastructuresmentioning

confidence: 99%

Section: Mum Proxies For Proactive Handoff Managementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application-Level Middleware to Proactively Manage Handoff in Wireless Internet Multimedia

Bellavista

Corradi

2005

Management of Multimedia Networks and Services

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“…Middleware for developing applications in ubiquitous computing environments include GAIA [26] and One.world [27]. Finally, context-aware middleware such as Migratory Services [28] and MUM [29] have been developed for mobile ad hoc networks as well.…”

Section: Related Workmentioning

confidence: 99%

MobiSoC: a middleware for mobile social computing applications

et al. 2008

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Abstract. Recently, we started to experience a shift from physical communities to virtual communities, which leads to missed social opportunities in our daily routine. For instance, we are not aware of neighbors with common interests or nearby events. Mobile social computing applications (MSCAs) promise to improve social connectivity in physical communities by leveraging information about people, social relationships, and places. This article presents MobiSoC, a middleware that enables MSCA development and provides a common platform for capturing, managing, and sharing the social state of physical communities.Additionally, it incorporates algorithms that discover previously unknown emergent geo-social patterns to augment this state. To demonstrate MobiSoC's feasibility, we implemented and tested on smart phones two MSCAs for location-based mobile social matching and place-based ad hoc social collaboration. Experimental results showed that MobiSoC can provide good response time for 1000 users. We also demonstrated that an adaptive localization scheme and carefully chosen cryptographic methods can significantly reduce the resource consumption associated with the location engine and security on smart phones. A user study of the mobile social matching application proved that geo-social patterns can double the quality of social matches and that people are willing to share their location with MobiSoC in order to benefit from MSCAs.

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Client-side session splice approach, a novel approach to achieving seamless handoffs for multimedia applications in mobile computing

et al. 2009

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Thanks to the invention of mobile computing technology, people nowadays can have various entertainment experiences with multi-function devices and heterogeneous network interfaces. When using multi-function devices with heterogeneous network interfaces to download and play streaming data, they maybe want to switch the communication from a network interface to another one in a device (i.e., the intra-terminal handoff), or to the network interface in another device (i.e., the inter-terminal handoff). In the handoffs, they have to manually reset or initiate the application, and then re-subscribe to the streaming service because the communication bound to the old network interface is lost. They are interrupted for a long time when watching the show. They have to remember the point or the scene played in the application before the handoff in order to re-subscribe to the streaming service after the handoff. They suffer from the troubling manual operations, especially when the handoff happens frequently to the network interfaces having limited communication ranges. When roaming through networks, accordingly, they need a way to download and play the streaming data without interruption due to handoffs. They can use the proposed Client-side Session Splice Approach (CSSA) to achieve seamless handoffs for multimedia applications in mobile computing. They can rely on the CSSA to automatically finish the handoff between network domains or homogeneous communication media in a network interface, the handoff between network interfaces in a device, and the handoff between network interfaces in different devices. For achieving seamless handoffs, they can count on the CSSA to automatically re-subscribe the streaming service on behalf of the application and smartly download the streaming data at the point or the scene played in the application just before the handoff happens. They don't need to worry about the compatibility of the CSSA because the CSSA keeps intact applications, network infrastructures, and streaming servers. They can understand the principle, the practicability, the functionality, and the overheads of the CSSA through this paper.

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MUM: a middleware for the provisioning of continuous services to mobile users

Abstract: Abstract

Cited by 17 publications

References 15 publications

Application-Level Middleware to Proactively Manage Handoff in Wireless Internet Multimedia

Application-Level Middleware to Proactively Manage Handoff in Wireless Internet Multimedia

MobiSoC: a middleware for mobile social computing applications

Client-side session splice approach, a novel approach to achieving seamless handoffs for multimedia applications in mobile computing

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