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The past few years have witnessed a huge acceleration in global Internet traffic. Users' demand for contents is also rising accordingly. Therefore, content providers (CPs) that provide contents for users get high revenue from the traffic growth. There are generally two ways for CPs to get revenue: (i) charge users for the contents they view or download; (ii) get revenue from advertisers. On the other...
The ongoing enhancement of mobile devices capabilities and advanced technologies has largely contributed to the huge increase of wireless traffic demand. Mobile network operators around the world are struggling to manage this new era of higher generation networks by finding new means and strategies to implement in order to meet the explosion in traffic demand. One of the current and most efficient...
With rapid increases in demand for mobile data, mobile network operators are trying to expand wireless network capacity by deploying WiFi hotspots to offload their mobile traffic. However, these network-centric methods usually do not fulfill interests of mobile users (MUs). MUs consider many problems to decide whether to offload their traffic to a complementary WiFi network. In this paper, we study...
Owing to proliferation of smart phones, communication services such as a video streaming service are common in a mobile situation. For these services, quality evaluation and communication control based on Quality of Experience (QoE), which is the degree of a user's subjective satisfaction, is very important because the final goal of delivering high-quality service is improving user's satisfaction...
For data delivery systems such as video-on-demand service, an optimum design is presented to maximize the revenue of the system with priority classes. The willingness-to-pay (WTP) is introduced for a measure of utility (price), and the optimum design is discussed to maximize the revenue. For the system with two priority classes, the optimum condition is given in terms of the traffic load, waiting...
Mobile Network Operators (MNO) are nowadays facing an exponential growth in their network traffic, as more and more customers are having access to affordable new technologies using smarter and data-based equipments. As new strategies have to be developed and implemented in order to meet those demands in a cost efficient way, the offloading one, with using an alternative network to the macrocell cell...
Mobile Network Operators (MNO) are nowadays facing an exponential growth in their network traffic, as more and more customers are having access to affordable new technologies using smarter and data-based equipments. As new strategies have to be developed and implemented in order to meet those demands in a cost efficient way, the offloading one, with using an alternative network to the macrocell cell...
Network traffic load usually differs significantly at different times of a day due to users' different time preference. Network congestion may happen in traffic peak times. In order to prevent this from happening, network service providers (NSPs) can either over-provision capacity for demand at peak times of the day, or use dynamic time-dependent pricing (TDP) scheme to reduce the demand at traffic...
This paper studies the impact of transmission rate control and pricing on the congestion management practices on bottleneck links of Internet service provider (ISP). QoS negotiation between ISP and users is conducted by letting users specify their minimum and maximum transmission rate required. Each link tentatively allocates the maximum transmission rates to the traffics that are going to cross it...
Pricing cloud resources plays an important role in leading to the success of cloud computing. Cloud services are priced at different levels in infrastructure-as-a-service (IaaS) cloud market. For example, Amazon EC2 offers its cloud resources with three pricing schemes, the subscription model, pay-as-you-go model and spot pricing model. With more and more IaaS cloud service providers (CSPs) beginning...
Notion of the user-centered design (UCD) is requisite to improve user satisfaction. Matching the concept of UCD, Quality of Experience (QoE) is expected to become a paradigm shift from the existing operator-initiative network services. There are, however, several difficulties to realize practical communication services based on QoE. One difficulty is how to bridge QoE and Quality of Service (QoS)...
Network congestion during large scale disasters seems inevitable. Sudden influx of traffic caused by users calling their loved ones, coupled with the possibility that many base stations and routers in the area are damaged by the disaster; leads to resource shortage which causes congestion, which in turn causes many users becoming disgruntled and their quality of experience dropping. If a study can...
Public WLANs based on IEEE802.11 standard are now widely deployed. In an environment offering several APs (Access Points), a UTE (User Terminal Equipment) needs to choose which AP to associate with. Conventionally, the UTE associates with the AP with the strongest RSSI (Received Signal Strength Indicator). This simple approach, however, can degrade the efficiency of network utilization since the UTE...
In this paper, we consider a price-based connection admission control (CAC) for wireless random access networks. In particular, a network operator determines sequential prices to dynamically maintain the traffic admitted into the network below the channel capacity. The CAC tries to ensure quality of service (QoS) guarantees to users and hence maximize the overall revenue. We find that the revenue...
This paper studies the impact of connection admission control (CAC) on the congestion management practices and the revenue of a monopoly access point (AP). The AP provides congestion-indication signals that suggest users to choose their access probabilities in response to network loading conditions. A Stackelberg leader-follower game is then formulated to analyze the interaction between the AP and...
In this paper, a utility-based load distribution approach is introduced for relieving congestion at certain popular spaces within the network. Congestion-indication signals are provided for suggesting users to select APs in response to network load conditions. The heavier traffic load an AP has, the lower utility each associated user gains. Hence, the users incentively adapt themselves to associate...
Both of Quality of Service (QoS) and Quality of Experience (QoE) are defined to specify the degree of service quality. Although they are dealt with in different layers in multi-layered models, collaboration of these is necessary to improve the user satisfaction for telecommunication services. In this paper, after sorting out the concepts and specification of QoS and QoE, a service quality coordination...
In this work, we focus on using pricing as an incentive mechanism to encourage self-interested access points to participate in a public wireless network. Specifically, we employ a centralized model to aggregate all of the access points deployed by different businesses into a federated market, enabling wireless clients to select the cost-effective access service with the consistent quality. The proposed...
Recent simulation-based networking research prefers the use of real packet traces to traditional model-based traffic generation. Part of this demand comes from the fact that synthetic traffic is only remotely similar to that found in real life. Now, the biggest problem with replaying real packet traces in simulation is that the majority of publicly available traces are bilateral. Splitting traces...
The recent advent of smartphones and mobile thin-clients has increased opportunities for people to download a large volume of data via wireless access networks while they on the move. In this study, we considered a scenario in which a mobile user moving from one location to another has to arrive at the destination within a certain period of time and wants to obtain as much data as possible before...
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