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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)
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)