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The author:(作者)hpmailerpublished in(发表于) 2013/12/1 20:40:02 Beijing 4G field experience tests： fast but poor network coverage，
Beijing 4G field experience tests: fast but poor network coverage -4G,4G experience-IT information Beijing 4G field experience tests: fast but poor network coverage
4G license will be issued, so 4G this technology will soon be official business on the Mainland. Carriers ready yet? In question, respectively, visited the Zhongguancun West Mobile Business Hall, xizhimen, mobile office and mobile business Hall of Wangfujing.
At midday, the author comes to the Zhongguancun West District of China Mobile Business Hall. Entering the Hall, is the experience of 4G, moved the focus on 4G promotion.
▲ Zhongguancun West District of China Mobile Business Hall
Author just speeds experience under 4G and also added 3G control. Author first use the Speedtest tool to measure speed. It can be seen that 4G very powerful, download speed reached 6MB/s, and uploading is also close to 1.2MB/s. 3G uplink to the Internet card and download only 120KB/s.
▲ Zhongguancun West District of China Mobile -4G Mobile Business Hall (top) and 3G Internet card (below) speed comparison
Subsequently, the author applied from the download time: on the 4G with a b software software downloads, size of 7.85M, took 7 seconds; download another 8.5M with the link 3G network card, by 35 seconds.
Final test project is to download the video. In the 4G era, watching the video is one of the leading mobile entertainment, only fast Internet connections to achieve good experiences.
Author video website to download a famous animated vignettes of the old man and the sea, finished sizes for 65.14M,4G phones in 2 minutes to download this video, download the peak reached when 3MB/s and 3G under the network, it took 5 minutes and 5 seconds.
Xizhimen station is mobile brokerage house II. Walked into the Hall, and products is still closest to the door 4G. And so I began testing, are basically the same as the front.
? China Mobile Beijing Office
First is the Speedtest speed, speed of the previous Hall of largely the same. Then download application, the author 4G must download a software on your phone, size of 7.86M, took 4 seconds. B, then download the software, time is 4 seconds. 3G same as the last time, took 36 seconds. Finally download videos, and 4G cases took 1 minute and 40 seconds respectively with 5 minutes 35 seconds.
▲ -4G cell phone China Mobile Beijing brokerage house (top) and 3G Internet card (below) speed comparison
Third stop is Wangfujing Mobile Business Hall. Many 4G boards in the Hall, but 4G is in a very quiet place.
? Wangfujing, China Mobile Business Hall
Start Speedtest speed: 4G download speeds of over 9MB/s and 3G reached 550KB/s, is the highest in tests at various locations on the day. On 4G after downloading the aforementioned two applications, 8 seconds and 6 seconds respectively, on the 3G for 30 seconds. And 4G networks, downloading video is 2 minutes and 30 seconds, respectively, 5 minutes, 2 seconds.
? Wangfujing, China Mobile -4G Mobile Business Hall (top) and 3G Internet card (below) speed comparison
When you download the application here, and always cotton, also experienced slow or even stop when downloading a video download. Although licensing commercial 4G, but 4G network-building is still a long way.
北京4G实地体验测试：速度快但网络覆盖差 - 4G,4G体验 - IT资讯北京4G实地体验测试：速度快但网络覆盖差
4G牌照即将发放，那么4G这项技术也就将很快在内地正式商用。运营商准备好了么？带着疑问，分别走访中关村西区移动营业厅、西直门移动营业厅和王府井移动营业厅。
中午时分，笔者来到了中国移动中关村西区营业厅。一进入营业厅，就是4G的体验区，可见中移动对4G推广的重视。
▲中国移动中关村西区营业厅
笔者这次仅仅从网速体验下4G，同时还增加了3G对照。笔者首先用Speedtest工具来测网速。可以看出，4G的表现相当强悍，下载速度达到了6MB/s，而上传也接近1.2MB/s。而3G上网卡的上行和下载仅120KB/s。
▲中国移动中关村西区营业厅-4G手机（上）与3G上网卡（下）测速对比
随后，笔者从下载应用的时间上来比较：在4G手机上用A软件下载B软件，大小为7.85M，耗时7秒；用联通3G上网卡下载了另一个8.5M的应用，用了35秒。
最后的测试项目是下载视频。在4G时代，看视频是最主要的手机娱乐方式之一，只有网速快才能达到好的体验。
笔者从视频网站下载一部著名的动画短片《老人与海》，大小为65.14M，4G手机用了2分钟下载完了这部视频，下载时峰值达到3MB/s，而在3G网络下，则用了5分5秒。
第二站是西直门移动营业厅。走进营业厅，离门口最近的产品仍然是4G手机。于是笔者开始了测试，内容基本与前边相同。
▲中国移动西直门营业厅
首先是Speedtest测速，速度与上个营业厅大体相同。然后是下载应用，笔者在4G手机上先下载了A软件，大小为7.86M，用时4秒。然后下载B软件，用时也是4秒。而3G手机基本与上次相同，用时36秒。最后是下载视频，在4G和3G情况下分别用时1分40秒与5分35秒。
▲中国移动西直门营业厅-4G手机（上）与3G上网卡（下）测速对比
第三站是王府井移动营业厅。营业厅里有很多4G宣传板，但4G手机却放在一个很冷清的地方。
▲中国移动王府井营业厅
首先仍是Speedtest测速：4G的下载速度已超过9MB/s，而3G也达到了550KB/s，都是当天不同地点测试的最高值。之后在4G网络下载前述的两个应用，分别用时8秒与6秒，在3G上则为30秒。在4G和3G网络下，下载视频的时间分别为2分30秒、5分2秒。
▲中国移动王府井营业厅-4G手机（上）与3G上网卡（下）测速对比
在这里下载应用时，总是出现卡顿的情况，在下载视频时也出现了速度低甚至停止下载的情况。看来虽然4G发牌商用在即，但4G网络建设仍然道路漫长。
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