نتایج جستجو برای: wifi protocol

تعداد نتایج: 252714  

2013
WU Huayi

In this paper, we studied a hybrid wireless network including UWB devices and WiFi devices together and analyze the characteristics of selfish behavior and the methods how to expose it. In order to improve the self-giving cooperation between the nodes in hybrid wireless networks and increase the fairness index of the whole networks, a security mechanism was proposed in this paper. The punishmen...

2011
Hua Qin Yanfei Wang Wensheng Zhang

It has been common for a mobile device to have WiFi and Bluetooth interfaces. As the ZigBee technology becomes more mature, it will not be surprising to see the ZigBee interface commonly embedded in mobile devices together with WiFi and other interfaces in the near future. To leverage the ZigBee interface for improving the communication performance of a mobile device, we propose a ZigBee-assist...

2015
Andrei Croitoru Dragos Niculescu Costin Raiciu

WiFi is emerging as the preferred connectivity solution for mobile clients because of its low power consumption and high capacity. Dense urban WiFi deployments cover entire central areas, but the one thing missing is a seamless mobile experience. Mobility in WiFi has traditionally pursued fast handover, but we argue that this is the wrong goal to begin with. Instead, we propose that mobile clie...

Journal: :CoRR 2017
Mahdi H. Miraz Suhail A. Molvi Muzafar A. Ganie Maaruf Ali AbdelRahman H. Hussein

Identifying those causes and parameters that affect the Quality of Service (QoS) of Voice-over-Internet Protocol (VoIP) through heterogeneous networks such as WiFi, WiMAX and between them are carried out using the OPNET simulation tool. Optimization of the network for both intraand intersystem traffic to mitigate the deterioration of the QoS are discussed. The average value of the jitter of the...

2018
Xiuzhen Guo Yuan He Xiaolong Zheng Liangcheng Yu Omprakash Gnawali

Cross-technology communication (CTC) is a technique that enables direct communication among different wireless technologies. Recent works in this area have made positive progress, but high-throughput CTC from ZigBee to WiFi remains an open problem. In this paper, we propose ZigFi, a novel CTC framework that enables direct communication from ZigBee to WiFi. Without impacting the ongoing WiFi tra...

2012
Haksoo Choi Raghu Ganti Mudhakar Srivatsa Ramya Raghavendra

Wireless hybrid networks have become quite popular with the evolution of several devices with multiple networking interfaces. Each of these interfaces (and the associated networks) have significantly different characteristics, hence it is important to understand how best to utilize and operate in the presence of multiple networks. Smartphones are a popular example of devices with multiple netwo...

2010
Claudio Agostino Ardagna Sushil Jajodia Pierangela Samarati Angelos Stavrou

We present a novel hybrid communication protocol that guarantees mobile users’ k-anonymity against a wide-range of adversaries by exploiting the capability of handheld devices to connect to both WiFi and cellular networks. Unlike existing anonymity schemes, we consider all parties that can intercept communications between the mobile user and a server as potential privacy threats. We formally qu...

2015
Venkatraman Iyer Frederik Hermans Thiemo Voigt

Sensor networks operating in the 2.4 GHz band often face cross-technology interference from co-located WiFi and Bluetooth devices. To enable effective interference mitigation, a sensor network needs to know the type of interference it is exposed to. However, existing approaches to interference detection are not able to handle multiple concurrent sources of interference. In this paper, we addres...

2011
Ali Al-Sherbaz Chris Adams Sabah Jassim

Horizontal developments in communication systems have led to the emergence of new wireless technologies like WiMAX, 3G and 4G. These expansions can provide new opportunities for further advances and exciting applications in particular if we can integrate different technology standards into heterogeneous wireless networks. WiMAX and WiFi wireless networks are two examples of different standard t...

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