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We propose a scalable coded distributed computing framework for wireless distributed computing over a cluster of mobile users, in which the data shuffling across users are performed through an access point at the edge of the network. The proposed framework achieves a constant shuffling load that is independent of the number of participating users. The key idea is to utilize a particular repetitive...
Multimedia application on mobile phone platform is a hot topic in Information Technology industry accompanying with the advances of technologies in Internet, smart operating system and wireless network. The development of streaming media technology boosts the audio and video application over the Internet. This paper describes a mobile video live streaming system with Wi-Fi/4G mobile phone to capture...
Satellite networks are expected to support multimedia traffic flows, offering high capacity with QoS guarantees. This paper deals with Multipath-TCP (MPTCP), which exploits multiple TCP connections using different paths in order to improve user’s throughput. In this study, MPTCP is combined with network coding to protect TCP transmissions from packet losses caused by ON/OFF channels in mobile satellite...
Recent research has reported numerous studies bringing into question the gender inclusiveness of many kinds of software. Inclusiveness of software (gender or otherwise) matters because supporting diversity matters — it is well-known that the more diverse a group of problem-solvers, the higher the quality of the solution. To help software creators identify features within their software that are not...
Control of data delivery latency in wireless mobile networks is an open problem due to the inherently unreliable and stochastic nature of wireless channels. This paper explores how the current best-effort throughput-oriented wireless services could be evolved into latency-sensitive enablers of new mobile applications such as remote 3D graphical rendering for interactive virtual/augmented-reality overlay...
Mobile Wireless Sensor Networks (MWSNs) can be defined as a wireless sensor network (WSN) in which sensor nodes are mobile. It has recently become an area of attractive research interest. MWSNs have been attracting increasing interest for supporting a new generation of ubiquitous computing systems with great potential for many applications. However, the communication paradigms in this type of network...
For the next generation mobile video broadcasting, especially in-band solutions that serves the mobile devices, a limited feedback scheme via cellular channel polling is feasible to give accurate real-time information on the broadcast receivers' channel erasure rate, and decoding buffer status. In this work, we propose an AL-FEC coding degree scheme based on this feedback, to achieve a better decode...
Live video streaming from mobile devices is quickly becoming popular through services such as Periscope, Meerkat, and Facebook Live. Little is known, however, about how such services tackle the challenges of the live mobile streaming scenario. This work addresses such gap by investigating in details the characteristics of the Periscope service. A large number of publicly available streams have been...
Mobile display has been considered as the major contributor to the energy consumption of the ever-increasing mobile video services. Current practices in display energy reduction (DER) utilize local computing resources to analyze the video content before DER strategies can be applied in a per-device fashion. For a given video, same analytical computations are repeated in millions of individual devices...
Recent technological advancement in mobile technologies had changed the learning process for urban poor group in Malaysia. However, the main problem is lacking of understanding of the factors that drive urban poor to use m-learning. Thus, the main objectives of this exploratory research are (i) to identify the factors that drive urban poor to use m-learning and (ii) to provide recommendations to improve...
There is a need for collaborative learning that promotes students' diverse interactions in online platforms. The purpose of this study is to investigate four types of interaction (social, learning, egocentric and allocentric interaction) in collaborative learning environment that based on Moodle and WeChat. The sample of this study includes 78 students (age 20-24) in China who have experience using...
Molecular communications between mobile nano-robots will likely yield bit transposition errors. In such a scenario, it is important to design and test a new family of appropriate forward-error-correction codes. In this paper, we first construct a proof-of-concept robot to demonstrate how transposition errors arise. We then review state-of-the-art research in positional-distance codes and implement...
Cloud-based video encoding has become more and more popular in Internet, especially for mobile clients, considering their limited resources. Recently, GPUs (Graphics Processor Units) make the cloud-based video encoding more economic and efficient. However, the motion estimation in inter prediction, which usually occupies about 70% encoding time in H.264/AVC, is still a big headache because of its...
When a user uploads audio files to a music streaming service, these files are subsequently re-encoded to lower bitrates to target different devices, e.g. low bitrate for mobile. To save time and bandwidth uploading files, some users encode their original files using a lossy codec. The metadata for these files cannot always be trusted as users might have encoded their files more than once. Determining...
Mobile cloud applications have become extremely popular in the last years. Location-based services, navigation, online gaming and social networking are a representative set of “always on” cloud applications in which the same or partially overlapping content is delivered to multiple users. Network coding is a well matching solution to improve content delivery. In this paper we propose the vNC-CELL...
The rapid advancements in networking technologies and hand-held devices enable mobile users to concurrently receive real-time multimedia streaming (e.g., high-definition video) with different radio interfaces (e.g., Wi-Fi and LTE networks). Stream control transmission protocol (SCTP) is an important transport-layer solution to implement concurrent multipath transfer (CMT) over heterogeneous wireless...
One of the main challenges for continued wireless capacity growth is the difficulty in exploiting the multicast nature of the wireless medium: wireless end points rarely experience the same channel conditions or access the same content at the same time. In this paper, we present and analyze a novel wireless video delivery paradigm based on the combined use of channel-aware caching and coded multicasting...
Location-Based services are gaining momentum as an important advancement in context aware services. That is, empowering users to identify potential services in their current space, and the prospect for services that are able to target local users, are pushing interest in research and industry alike. This paper explores the use of non-audible sound as a communication medium to tag and access location...
This paper presents a novel approach based on structure recurrence in XML documents for Android mobile devices. The model identifies recurrent structures and gives a feasible solution to be easily adapted for resource constrained mobile devices. XML files with sequentially repetitive blocks of structures can be processed differently to reduce the processing time. It relieves the parser from the computationally...
An emerging requirement for 5G systems is the ability to provide wireless ultra-reliable communication (URC) services with close-to-full availability for cloud-based applications. Among such applications, a prominent role is expected to be played by mobile cloud computing (MCC), that is, by the offloading of computationally intensive tasks from mobile devices to the cloud. MCC allows battery-limited...
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