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Due to the cooperation diversity, Coordinated MultiPoint (CoMP) transmission may potentially improve energy efficiency of cellular networks. The main purpose of this paper is to analyze this potential. By employing CoMP, there are two schemes to improve energy efficiency; one is to decrease the transmission power of base stations (CDTP) without changing(More)
Cellular relay networks prove to be a cost-effective approach that offers significant performance benefits in coverage extension, cell-edge throughput enhancement and increased spectral efficiency. Radio resource management for cellular relay networks, where the network topology is highly dynamic, is particularly challenging. The highly dynamic topology may(More)
To achieve high efficiency in human resource management, University Human Resource Management Information System (UHRMIS in short) requires hierarchical architecture, clearly defined modules and effective cooperation of multiple users. So this paper presents Improved Role Based Access Control model (IRBAC model in short), a new access control model and the(More)
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