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Localization of mobile nodes has been a fundamental issue for wireless sensor networks. The existing localization algorithms can be classified into two categories: range-based and range-free. Range-free scheme is more cost-effective than range-based scheme. This paper proposes a two-level range-free localization algorithm (2RaLA), which consists of two(More)
Selection and Peer-review under responsibility of the Program Chairs. Abstract Wireless sensors networks (WSNs) are traditionally composed of large number of low-cost and tiny homogenous sensors nodes connected through a wireless network that gather data to be treated locally or relayed to the sink node through multi-hop wireless transmission. Moreover,(More)
For most of the applications in wireless sensor networks, localization is fundamental and essential. The localization systems can be categorized into two types: range-based and range-free. In this paper, we propose a new range-free localization algorithm. The basic principle of this algorithm is to define two classes of nodes according to the number of(More)
In this paper a two level resource allocation scheme is proposed to enhance the Quality of Service (QoS) for multimedia services in LTE downlink system. It corresponds to a solution that combines cooperative game theory, a virtual token mechanism, and the EXP-RULE algorithm. By using cooperative game theory such as bankruptcy game and Shapley value, the(More)