Azade Khalaj

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IEEE 802.11 is a widely used standard for MAC and PHY layers of WLANs. Unfortunately the access methods offered in this standard cannot support QoS (quality of service) for real-time traffics. It seems that the access methods employed in this standard, causes high variations in delay or jitter and also waste of bandwidth due to collisions. In this paper, we(More)
The increase in the popularity of small digital mobile devices also implies an increased demand in applications. The limited computing capabilities on the mobile devices and the unreliability of wireless links are barriers to the smooth access of mobile devices to the Grid applications and resources. In this paper a proxy-based approach is presented that is(More)
Research activities in the mobile computing field aim to find solutions for achieving the smoother access to remote online resources, such as cloud services, from client application found on mobile devices. The limited capabilities of mobile devices and also the unreliable condition of wireless environment are sources of challenges in achieving the(More)
Proxies can be used as gateways between remote resources and mobile devices to deal with the challenges resulted from disconnections and the limited resources of mobile devices. This paper describes a proxy-based infrastructure that provides proxy services to support mobile device applications. Proxy services can be thought of as a library of functions(More)
The DCF (distributed coordination function) access method of IEEE 802.11 standard cannot support QoS (quality of service) for real-time traffics. Knowing that the use of multimedia applications over WLANs is increasing, it seems essential to overcome this problem. There are many methods to enable DCF with service differentiation and QoS. The difficulty in(More)
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