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- Title
一种软件定义无线网络负载均衡架构及算法.
- Authors
郭娟; 张森; 姚远
- Abstract
Software defined network(SDN) provides a new way to achieve load balancing in heterogeneous wireless networks. A load balancing architecture and algorithm for software defined wireless network are proposed. First,the algorithm constructs a list of candidate networks based on the received signal strength (RSS). Secondly,by calculating the standard deviation of available load ratio in each available candidate network,the load differences among the candidate networks are classified. Then,a joint optimization function is proposed by linearly combing a quality of service(QoS) matching function and a load balancing index. In accordance with classification results,the weight of the joint optimization function is dynamically adjusted and admission control is realized by setting a reasonable threshold. Compared with traditional algorithm,the proposed algorithm can reduce blocking rate of different services by about 20%;on the other hand,the normalization load of different networks is closer. The algorithm can effectively reduce the traffic congestion rate while balancing the network load,thus effectively improving the overall performance of heterogeneous wireless network.
- Publication
Telecommunication Engineering, 2017, Vol 57, Issue 1, p72
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2017.01.012