一种基于网络优化的动态信道分配策略
An Optimized Dynamic Channel Allocation Protocol in CDMA Networks
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摘要: 该文提出了一种在CDMA网络中基于网络优化的动态信道分配策略，它针对恒定比特率(CBR)业务建立了一种整数规划的数学模型，它不是每个时隙进行一次信道分配而是若干个时隙根据当前所有用户的状态统筹做一次调度，目的是使得用户QoS和系统性能得到折中考虑。通过仿真，相对于传统话音优先和按照优先级排队的分配算法，这种优化算法在保证业务的QoS的同时使得信道利用率得到提高。
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关键词:
- 整数规划; 动态信道分配; QoS
Abstract: In this paper a novel dynamic channel allocation algorithm based on network optimization in CDMA network is presented. It establishes an integer programming model for CBR services, which does not allocate channel at each time slot but at some time slots. The goal is to trade off between the QoS for users and system performance. The simulation results show that this optimal algorithm both improves the channel usage and guarantees the QoS, compared with traditional voice-allocated-first algorithm and queue-by-priority allocation algorithm. -
Oriol Sallent, Jordi Perez-Romero, et al.. An emulator framework for a new radio resource management for QoS guaranteed services in W-CDMA systems. IEEE J. on SAC, 2001, 19(10):1893-1904.[2]Akyildiz I F, Levine D A, Inwhee Joe. A slotted CDMA protocol with BER scheduling for wireless multimedia networks[J].IEEE Trans. on Networking.1999, 7(2):146-158[3]Huang Vincent, Zhuang Weihua. Optimal resource management in packet-switching TDD CDMA systems. IEEE Personal Communications Magazine, 2000, 7(6): 26-31.[4]Liu Xin, Chong K P, Shroff N B. Opportunistic transmission scheduling with resource-sharing constraints in wireless networks. IEEE J. on SAC, 2001, 19(10): 2053-2064.[5]Wozencraft J M, Jacobs I M. Principles of Communication Engineering. New York: Wiley, 1965:110-125.[6]Kwonhue Choi, Sooyoung Kim Shin, et al.. Adaptive processing gain CDMA networks over Poisson traffic channel[J].IEEE Communications Letters.2002, 6(7):273-275[7]孙德敏.工程最优化方法及应用(修订版).合肥:中国科技大学出版社,1997.11:65-77. -
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