Proactive load balancing with admission control for heterogeneous overlay networks
Proactive load balancing with admission control for heterogeneous overlay networks
复制标题
具有异构覆盖网络准入控制的主动负载平衡
DOI：
--
复制
发表时间：
2013
影响因子：
--
通讯作者：
M. Ma
中科院分区：
文献类型：
--
作者：
D. Ma;M. Ma
下一代无线网络将是异构无线技术共存的网络。平衡不同网络之间的业务负载可以有效地利用系统中的总体无线电资源。在本文中，我们提出了一个有效的负载平衡计划的异构覆盖系统，这是应用在呼叫接纳控制过程。如果可用网络不能在不降低正在进行的呼叫所获得的服务质量（QoS）的情况下为请求呼叫提供足够的资源，则系统将首先通过在网络之间发起垂直切换来执行负载平衡操作，以便为请求呼叫创建更多的空间。负载均衡算法是为了使整个系统的网络利用率之间的方差最小化，这可以用二次二元规划问题来表示。仿真结果表明，与其他三种参考方案相比，该方案可以接纳更多的呼叫进入系统，从而提高系统的整体吞吐量。同时，该方案能够保持网络的有效工作状态，为用户提供更好的QoS支持。版权所有© 2011约翰威利父子有限公司.
The next generation wireless networks will be the coexistence of heterogeneous wireless technologies. Balancing the traffic load among different networks can effectively utilize the overall radio resources in the system. In this paper, we propose an efficient load balancing scheme for the heterogeneous overlay systems, which is applied in the call admission control process. If the available network(s) cannot provide enough resource for the request call without degrading the quality-of-service (QoS) obtained by the ongoing calls, the system will perform load balancing operations first by initiating vertical handoffs among networks in order to create more rooms for the request call. The load balancing algorithm is to minimize the variance between the network utilizations of the entire system, which can be formulated as a quadratic binary programming problem. Simulation results show that the proposed scheme can admit more calls into the system compared with the other three reference schemes and then improve the overall throughput. Meanwhile, the scheme can keep the networks working in effective states and provide a better QoS support for users. Copyright © 2011 John Wiley & Sons, Ltd.