最根本的网络质量指标中英文翻译
English translation of the most fundamental of network quality index
【摘 要】无线网络的质量和许多因素有关,由此带来了网络优化工作的复杂性。文章提出了注重平衡性是提升网络质量评价的关键,专注于讨论使用变龙算法合理精确配置功率,控制网内干扰分布,达到网络质量峰值的方法。
[ Abstract ] the wireless network quality and many factors, resulting in the complexity of network optimization work. This paper puts emphasis on the balance is the key to improve network quality evaluation, focusing on the use of chameleon algorithm reasonable accurate configuration power, control the distribution of interference within the network, methods to achieve network quality peak.
【关键词】C/I 变龙算法 自适应 收敛反馈
[ keyword ] C/I chameleon algorithm of adaptive convergence feedback
1 C/I概述
1 C/I overview
1.1 最根本的网络质量指标
The 1.1 most fundamental network quality index
评价无线网络质量的最基本准则是C/I(载干比)。C/I的改善可以降低误码率、丢帧率,提高语音质量、MOS感知等,是无线网络优化的底层指标;而其他诸如掉话率、切换成功率、无线接入性等KPI指标都是在C/I这个性能上的高层反应。由此可见,网络优化的重点即是优化C/I,偏离这一目标,盲目追求高层KPI都是不切实际的。
The basic principles of wireless network quality is C/I ( CIR ). C/I improvement can reduce the bit error rate, frame loss rate, improve the quality of speech, MOS perception, is the underlying index of wireless network optimization; while others such as the drop rate, the success rate of switching, wireless access, KPI index is high in the performance of the C/I reaction. Therefore, the focus of network optimization is the optimization of C/I, this deviation from the target, the blind pursuit of high KPI is unrealistic.
1.2 提高网络质量评价的关键
Key 1.2 to improve network quality evaluation
随着网络发展日益复杂,各种干扰也越来越多,在功率配置问题上绝大多数网优人员解决干扰的手段是提高功率来抗干扰,高电平高干扰,这样会导致高电平质差比率升高,整网质量不高,且由于存在网络质量的不平衡分布,易使终端用户产生感知上的差异化,引发投诉上升及满意度下降。在与竞争对手的比拼中处于优势,和在网内尽量保持各处同性是同样重要的。网络优化是一门平衡的艺术,平衡性是提高网络质量评价的关键。
With the development of network is becoming more and more complex, various interference is also increasing, the power allocation problem in most of the network optimization engineers to solve the interference method is improved to anti-jamming power, high level and high interference, it will lead to a high level of poor quality ratio increased, the whole network quality is not high, and the uneven distribution of network quality, the terminal user perception of the difference, drop trigger rise in complaints and satisfaction. The advantage in the competition and the competition in the network, and try to keep all ga
y is equally important. Network optimization is an art of balance, the balance is the key to improve the network quality evaluation.
举例:路测优化。由于路测考核指标越来越成为各运营商关注的重点,因此在优化上也就自然而然地会倾注更多的资源,对道路覆盖小区频率使用进行倾斜、大功率保证C/I,提升各类道路测试指标。乍一看这样的做法效果不错,可细想一下问题就来了,路测道路占整体覆盖面积不足10%,用户不及20%,而这些区域C的强化势必导致90%区域和80%用户的干扰上升,将显著降低原本就覆盖受限区域的C/I,影响客户感知,从实际投诉比率上也可以看到,室内投诉比率占绝大多数。因此,一视同仁(道路和室内)的总体网络优化策略能更好地改善用户感知,提高满意度,这是平衡的观点。
For example: the road test optimization. Because the road test evaluation has increasingly become the focus of the operators, so in the optimization will come very naturally to pour more resources, covering area frequency using tilt, on the road of high power C/I, promote all kinds of road test index. At first glance this practice effect is good, can consider the issue came, road test road total covering area of less than 10%, the user less than 20%, w
hile strengthening the regional C will lead to rising interference of the 90% region and the 80% user, will significantly reduce the original coverage is limited to regional C/I, impact of customer perception, from the actual complaints the ratio can be seen, the majority of indoor complaint ratio. Therefore, make no exception ( road and indoor ) of the overall network optimization strategies can better improve user perception, increase satisfaction, this is a balanced view.
1.3 C/I和功率的关系
Relationship between 1.3 C/I and power
改善C/I的方法有两个:提高C或降低I。提高用户感知还可以运用一些新功能,改善相同C/I情况下的MOS表现,如AMR、跳频等。
Method for improving C/I has two: increasing C or reducing I. Improve the user perceived can also use some new functions, improve the MOS performance under the condition of the same C/I, such as AMR, frequency hopping.
(1)提高C的主要方法是提升功率、调整覆盖、优化邻区配置;
( 1 ) the main method of improving C is to enhance the power, adjust to cover adjacent area configuration, optimization;
(2)降低I的主要方法是降低功率、调整覆盖、优化频率配置、控制外部干扰等。
( 2 ) reduction of I is the main method of reducing the power, adjust the coverage, frequency allocation, optimization control of external interference.
功率调整最为纠结,增加功率即增加了C和I,增加单小区抗干扰能力的同时增加了全局干扰;减少功率降低I的同时也降低了C。
The struggle for power adjustment, increase power is increased by C and I, and increase the anti-interference ability of single cell increased global interference; reduce the power reduction of I also reduces the C.
I由白噪声、外部干扰(各类干扰设备)和内部干扰(频率干扰和交调干扰)构成,可见在
调整功率时主要影响的是内部干扰。下面模拟了一条C/I VS Lev的曲线做个简单示意图,如图1所示:
I consists of white noise, the external disturbance ( all kinds of jamming equipment ) and internal interference ( frequency interference and crosstalk ), visible main influence in the adjustment of internal interference power. The simulation of a C/I VS Lev curves do a simple diagram, as shown in figure 1:
其中,横轴为全网的平均接收电平;纵轴为全网的平均C/I。图1主要分为3个区、1个点,具体描述如下:
setting是什么意思中文翻译Among them, the horizontal axis is the average received power network; the vertical axis is the average C/I network. Figure 1 is divided into 3 zones, 1 points, is described as follows:
A区:此处属于低功率区域,干扰主要由底噪、外部干扰强度决定,因此随着电平功率的提升,C/I上升很快。
A area: here belongs to the low power region, determines the interference is mainly compo
sed of background noise, external disturbance, so with the power of promotion, C/I up soon.
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