一種基于網(wǎng)絡(luò)優(yōu)化的動態(tài)信道分配策略
An Optimized Dynamic Channel Allocation Protocol in CDMA Networks
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摘要: 該文提出了一種在CDMA網(wǎng)絡(luò)中基于網(wǎng)絡(luò)優(yōu)化的動態(tài)信道分配策略，它針對恒定比特率(CBR)業(yè)務(wù)建立了一種整數(shù)規(guī)劃的數(shù)學(xué)模型，它不是每個時(shí)隙進(jìn)行一次信道分配而是若干個時(shí)隙根據(jù)當(dāng)前所有用戶的狀態(tài)統(tǒng)籌做一次調(diào)度，目的是使得用戶QoS和系統(tǒng)性能得到折中考慮。通過仿真，相對于傳統(tǒng)話音優(yōu)先和按照優(yōu)先級排隊(duì)的分配算法，這種優(yōu)化算法在保證業(yè)務(wù)的QoS的同時(shí)使得信道利用率得到提高。
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關(guān)鍵詞:
- 整數(shù)規(guī)劃; 動態(tài)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. -
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