| 一种基于GSM／GPRS的动态信道分配策略 |
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| 引用本文： | 冯龛,贾振红,覃锡忠,王浩.一种基于GSM／GPRS的动态信道分配策略[J].通信技术,2012,45(1):32-34,37. |
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| 作者姓名： | 冯龛 贾振红 覃锡忠 王浩 |
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| 作者单位： | 1. 新疆大学信息科学与工程学院,新疆乌鲁木齐,830046
2. 中国移动通信集团新疆有限公司,新疆乌鲁木齐,830063 |
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| 基金项目： | 中国移动新疆分公司研究发展基金 |
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| 摘 要： | 针对GSM／GPRS网络中某些小区因频繁切换导致掉话率高的问题，提出了一种新的动态信道分配策略。该方案将信道划分为数据业务专用信道和语音／数据业务共享信道，并在共享信道中为切换型语音呼叫预留保护信道以降低其呼叫失败率。对于数据业务采用FIFO排队机制。最后利用一种近似计算方法求取该策略的呼叫阻塞率等指标。实验结果表明该方案能有效降低语音呼叫掉话率。
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| 关 键 词： | GSM／GPRS网络 排队理论 信道分配 马尔科夫过程 |
A Dynamic Channel Allocation Scheme for GSM/GPRS Networks |
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| FENG Kan
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JIA Zhen-hong
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QIN Xi-zhong
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WANG Hao.A Dynamic Channel Allocation Scheme for GSM/GPRS Networks[J].Communications Technology,2012,45(1):32-34,37. |
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| Authors: | FENG Kan JIA Zhen-hong QIN Xi-zhong WANG Hao |
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| Affiliation: | ②(①College of Information Science and Engineering,Xinjiang University,Urumqi Xinjiang 830046,China; ②Xinjiang Branch of China Mobile Group,Urumqi Xinjiang 830063,China) |
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| Abstract: | For the problem that the frequent switching by certain cells leads to high call-drop rate in GSM / GPRS networks,a new dynamic channel allocation scheme is proposed.The scheme divides all channels into two parts: special channel for data services and shared channel for voice/data,and some shared channel is reserved for handoff-call users.The data services use FIFO queuing mechanism.Finally,an approximation method is used to acquire such performance index such as new call-blocking rate.The experiment results show that this scheme could effectively reduce the voice-call drop rate. |
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| Keywords: | GSM/GPRS network queuing theory channel allocation Markov process |
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