Now let we entered series article subsection last night cnBeta describes finished device Hou on has been in playing with EVDO, but has been is has signal dial does not Shang, so on to card handed CB members– lit lit playing has, Taizhou Telecom of EVDO card still cannot Shang, later after engineer pointing, “playing a phone, received a phone” on can activated UIM card, was do so, so, computer finally first times entered has 3G era, now let we entered series evaluation of second bomb: China Telecom 3G-EVDO Rev.A speed evaluation.
Bright: well, that is what gadgets
Hello, X* of customer service do? 3G test card was swallowed by my dog to … @_@
Well now, insert after the EVDO card, ZTE software automatically identifies EVDO signal, as evaluation points near the EVDO-end device (<500m), so you can see today’s test scores will be very good, in the picture, we can see that the phone number, user name password all unchanged, would produce a connection after dialing connection speed is 3.1Mbps.
In accordance with the telecommunications engineer, EVDO is at present, the test network to devices running at full speed, so normally the rate will be at about 2-3M.
Content must be of concern to most Web pages, downloads, ping delay involved in daily use, such as content, next we will detail to interpret EVDO surprising speed.
First is the Thunder to download speed, connected to the network after our first impression, and fixed network speeds are the same, no difference . open Thunder download IE8 installation package testing, download speed is quickly soared to above 200K, between 250-280KB/s and ultimately stable, without dragging its feet, multi-threaded content is also very calm, visible EVDO network load capacity.
Next NetPerSec transmitted data, except the communication process in loss, this download maximum speed up to 2.7Mbps, is close to the theoretical value of 3.1Mbps. run out 153kbps CDMA1X network, there was a “Detox” carefree and easy ^_^.
Next is uploaded we cnBeta of telecommunication in the server to send data to a single thread, the highest rate of 1.1Mbps, the average speed of about 90KB, fast response, (this rate has surpassed most of the fixed-line broadband uplink speed limit).
Telecom
Netcom
Next we see network delay, we must remember in GPRS/EDGE and CDMA1X era of maximum problem, network communications bandwidth may enough, but delay often up to 2-5 seconds, therefore many on data delay requirements comparison high of application on cannot was completed, and in EVDO in the, this fundamental is not problem, above two Zhang figure is respectively ping Telecom and Netcom server by from of data, we can found EVDO of communications delay and solid network compared to comparable to, Only EVDO may signal a greater impact.
Then there is the video test, very smooth voice and video transmission, you can see evaluation of network QQ chat window to excellent, sharp and clear picture quality, flows about in about 450kbits, but do not have EVDO video Terminal, and therefore cannot test 3G chatting on the phone for the time being, but from looking at the data bandwidth, EVDO hosts a video is easy.
Next is the BT download, BT is a bandwidth killer for EVDO network, because it both up and down, and the number of connections, have an impact on the whole regional network, United States, Canada many ISP did severe restrictions to such P2P communications, CBer absolutely convinced at least Chinese carriers will also have similar actions.
Due to upload encroached on has channel, BT download of speed began no so stability, to crap bear titles group produced of hot us plays Lie.to.me download for cases, figure in the we can see BT download Shi average rate in 1.7Mbps around, download speed about is 200K around, and uplink speed about is 153Kbps, and CDMA1X of downward speed similar, but browse Web page of speed and no was has is large hysteresis, may is BT of all energy also no play out ‘s.
Stability, we tested for about two hours, the amount of data about 200M and didn’t find any stop, break, line instability, and browsing in the Web page, downloads, video has a very good performance, user experience and fixed networks can say that there is no difference between, on the data uplink will be even stronger.
This test environment:
Core 2 Duo E6550 OC 2.8GHz
Windows Vista Ultimate close built-in/third-party firewall
ZTE AC8710 CDMA1X/EVDO data card
CnBeta Telecom, Netcom node server
Profiling points located near EVDO-end device (<500m)
This concludes this test, we’re all aspects of China Telecom will also 3G tests, including:
Episode three: mobile case rate test
The fourth episode: different brands of terminals (/ZTE/Huawei Tianyi EVDO cell phone–if you can get)
The fifth episode: tariff comparison
So stay tuned!