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We develop an interference-aware relaying scheme in hybrid wireless networks. The scheme is derived from the optimization model which generalizes the multi-hop package delivery problem in hybrid wireless networks. It aims at minimizing the network costs via optimal power loading and relaying route. Besides, the new cost model considering interference impact is an advance on the basis of our previous...
New data intensive applications, which are continuously emerging in daily routines of mobile devices, significantly increase the demand for data, and pose a challenge for current wireless networks due to scarce resources. Although bandwidth is traditionally considered as the primary scarce resource in wireless networks, the developments in communication theory shifts the focus from bandwidth to other...
Mobile devices equipped with multiple network interfaces have the potential to increase transmission throughput by exploiting concurrent multipath transmission (CMT). However, packet scheduling for CMT is challenging since the diversity of latencies among transmission paths can easily yield out-of-order packet receptions and cause receiver buffer blocking if the receiver buffer is not large enough...
The heterogeneity is one of the key characteristics of the future wireless networks. How to provide terminal users with the best connection anytime and anywhere become more important. In this paper, a vertical handoff decision algorithm for the heterogeneous wireless networks is proposed based on the Markov Decision Process (MDP). First the factors which determine the choices of the wireless networks...
In modern mobile world interoperability between different wireless networks is most essential one, which enables the mobile node to move across the different heterogeneous wireless system. For seamless connectivity of mobile node mobility management and location management is essential one. In mobility management handoff estimation plays a vital role. To make the handoff estimation, attributes such...
Recent studies suggest nodes in practical networks are more likely to communicate with nearby nodes than far away nodes, which is referred to as proximity preference. In this paper, we model proximity preference by assuming the probability of communication follows a power law distribution with respect to distance and analyze its influence on the throughput of a hybrid network. Moreover, L-maximum-hop...
Available bandwidth (ABW) estimation in wirelessnetworks is a critical issue for quality-of-service (QoS) provisioning. Nowadays, a network path often contains at least onewireless link e.g., mobile users having wireless connection to theInternet through laptop PCs or smartphones. Most of the existingtools for measuring ABW have been developed and evaluatedin wired networks. Since the characteristics...
As new congestion control mechanisms are developed, their performance relative to existing mechanisms needs to be understood, in particular over wireless networks. This study aimed to evaluate existing TCP congestion control mechanisms using a comprehensive and reproducible methodology designed to be representative of real world usage of wireless networks. The study sought to investigate whether any...
Wireless NoC is becoming popular to be a promising future on-chip interconnection network as a result of high bandwidth, low latency and flexible topology configurations provided by this emerging technology. Nonetheless, congestion occurrence in wireless routers negatively affects the usability of high speed wireless links and considerably increases the network latency, therefore, in this paper, a...
Wireless NoC is becoming popular to be a promising future on-chip interconnection network as a result of high bandwidth, low latency and flexible topology configurations provided by this emerging technology. Nonetheless, congestion occurrence in wireless routers negatively affects the usability of high speed wireless links and considerably increases the network latency, therefore, in this paper, a...
In Video-on-Demand system, periodic broadcasting is the most bandwidth-efficient method to provide clients with popular videos. Many broadcasting schemes have been proposed to reduce server's bandwidth as well as client's waiting time. However, most of the schemes assume clients to have enough reception bandwidth, which is impractical since client's reception bandwidth varies, especially in wireless...
Existing video streaming protocols get poor QoE (Quality of Experience) especially when network bandwidth is drastically fluctuated due to handoff events over heterogeneous networks where they provide different bandwidths and network conditions. This paper proposes a novel QoE guaranteed mobile video streaming scheme over heterogeneous wireless networks: MOSQUITO. MOSQUITO can dynamically adjust streaming...
Greedy users deviate from the IEEE 802.11 Distributed Coordination Function (DCF) standards to unfairly increase their shares of the bandwidth on the expense of other standard-abiding users. The greedy behavior is implemented by modifying the firmware of the network interface card to manipulate the back-off timer. This paper presents a methodology using non cooperative game theory to formulate a countermeasure...
We consider distributed storage (DS) for a wireless network where mobile devices arrive and depart according to a Poisson random process. Content is stored in a number of mobile devices, using an erasure correcting code. When requesting a piece of content, a user retrieves the content from the mobile devices using device-to-device communication or, if not possible, from the base station (BS), at the...
Wireless data traffic, especially video traffic, has been growing at a rapid pace. Innovative network architectures and protocols are needed to improve the efficiency of data delivery. The trend toward integrating advanced information technologies and communications technologies is creating unprecedented opportunities in the design of infrastructure for network-centric services. The rapid growth in...
Network Coding-enabled wireless networks are vulnerable to data pollution attacks where adversary nodes inject into the network polluted (i.e. corrupted) packets that prevent the destination nodes from decoding correctly. Even a small proportion of pollution can quickly propagate into other packets via re-coding, occurred at the intermediate nodes, and lead to resource waste. Therefore, during the...
In this paper, we propose a novel Over Frequency Ruse (OFR) scheme in a heterogeneous network structure for 5G to increase the cell spectral efficiency and transmission ability. Specifically, we first derive an explicit expression of the interference characteristic in the cellular networks based on the cell interference depth (CID) model. And then, we analyze the performance of the proposed OFR including...
The rapid development of Video On Demand (VoD) service especially in wireless network incurs huge bandwidth costs. To reduce the bandwidth pressure and improve the user experience, Wireless Service Providers (WSP) began deploy cache in the Mobile Switching Center (MSC) following the power law distribution observation of video popularity for the whole system. However, based on the Sina Video dataset...
Next Generation Wireless Networks (NGWNs) are expected to be heterogeneous, which integrate different Radio Access Technologies (RATs) such as 3GPP's Long Term Evolution (LTE) and Wireless Local Area Networks (WLANs) where a transmission is supported if the signal-to-interference-plus-noise ratio (SINR) at the receiver is greater than some threshold. In this paper, we analyze the interference in heterogeneous...
Internet usage is growing and high technology of network has been developed. The improvement of network requires a number of data to be transfered. A number of data transmisstion is required in wired and wireless network. Especially, energy consumption will be growing by transfering a number of data in wireless network. To solve the problem, this paper proposes TCP-based congestion algorithm to save...
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