Network selection and resource allocation algorithm in heterogeneous wireless networks with proportional rate constraint
Received date: 2013-10-31
Revised date: 2014-03-04
李艾芸 , 邱玲 . 异构网络中基于比例速率限制的网络选择和资源分配算法[J]. 中国科学院大学学报, 2014 , 31(6) : 821 -826 . DOI: 10.7523/j.issn.2095-6134.2014.06.014
Considering the radio resource management problem in UMTS/WLAN heterogeneous networks,we propose a network selection and resource allocation algorithm with proportional rate constraint. In order to ensure the fairness among the users,the system sum-rate maximization problem subject to proportional rate constraint is considered. By relaxing the constraint and solving the problem,we get a deduction that the network selection is related to the user's rate ratio between different networks. Based on this,a low-complicity distribution algorithm is proposed. Simulation results show that the algorithm has minor degradation compared with the upper-bound performance. Additionally,the algorithm can effectively guarantee the fairness among users.
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