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We analyze the tradeoff between collision probability and code-ambiguity, when devices transmit a sequence of preambles as a codeword, instead of a single preamble, to reduce collision probability during random access to a mobile network. We point out that the network may not have sufficient resources to allocate to every possible codeword, and, if it does, this results in low utilization of allocated...
User data allowance trading emerges as a promising practice in mobile data networks since it can help mobile networks to attract more users. However, to date, there is no study on user data allowance trading in mobile networks. In this paper, we develop a truthful framework that allows users to bid for data allowance. We focus on preventing price cheating, guaranteeing fairness, and minimizing trading...
Due to dynamic wireless network conditions and heterogeneous mobile web content complexities, web-based content services in mobile network environments always suffer from long loading time. The new HTTP/2.0 protocol only adopts one single TCP connection, but recent research reveals that in real mobile environments, web downloading using single connection will experience long idle time and low bandwidth...
The topic-based mobile publish/subscribe (pub/sub) system has shown the potential applications in many scenarios, e.g., product coupon distribution. In this paper, we focus on the budget-constrained data dissemination services with a pre-determinated total amount of copy. A mobile user may subscribe data under different topics, but receiving a copy in any topic is enough. This is the mutually exclusive...
A mobile ad hoc network (MANET) is a self-configuring infrastructure-less network. Taking advantage of spontaneous and infrastructure-less behavior, MANET can be integrated with satellite network to provide world-wide communication for emergency and disaster relieve services and can also be integrated with cellular network for mobile data offloading. To achieve different purposes, different architecture...
The quality of telecommunications services plays an important role in deciding whether to buy its telecommunications services for a consumer. This paper first analyzed the quality of telecommunications service and service quality gap. Then, we used the questionnaire method and analyzed the quality gap of TD services existedamong consumers. We find the self-mapping effect for consumers isthe main cause...
Because of user mobility, highly dynamic, error-prone wireless channels, the QoS control for mobile Peer-to-Peer (MP2P) streaming media has to face considerable challenges. Given to the advantages of policy management, we develop a policy-based QoS control (PBQC) architecture to provide QoS assurance dynamically and automatically in mobile network environment. And we also propose a MP2P streaming...
In Wireless Sensor Networks (WSN), data gathering using mobile sinks typically incurs constant propagation of sink location indication messages to guide the direction of data reporting. Such behavior is undesirable, especially when the sensor network scale increases, as frequent message flooding will cause serious congestion in network communication and significantly impair the sensor network lifetime...
Layered P2P streaming has drawn great interest in mobile cellular network in recent years. As an important technology in this application, data scheduling plays a crucial role in achieving a high Quality of Service (QoS). The Rarest-First (RF) Scheme used in Layered P2P streaming has obtained a good performance in server load and throughput of peer nodes. However, it also brings some chanllenges,...
To combat the challenges(the mismatch between throughput and layer delivery ratio, the useless packets in high layers due to the loss of packets in low layers) brought by the layered encoding to data scheduling for P2P streaming in the mobile network, We propose a new data scheduling scheme, named MLayerP2P. The key idea of the MLayerP2P is: A 3-Stage Model is used to schedule the absent streaming...
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