Mobile Internet speed is divided into download and upload speeds. Since the Internet is mainly used for browsing, receiving emails, and BT (BitTorrent), the download demand is usually much greater than the upload, so most people usually pay more attention to downloads when it comes to mobile Internet speed. Speed. However, as social networking sites become more and more popular, uploading pictures and videos becomes more and more common, and as the cameras currently used by users become increasingly powerful, upload speed becomes more and more important for mobile Internet users. According to According to NCC's survey (102 years), the average download speed of Taiwan's 3G operators can reach 3.47~5.44 Mbps, but the upload speed is only about 1Mbps, with a speed difference of 3~5 times. At present, based on the current measured speed, Taiwan's 4G operators currently have the fastest download speed. Up to 100Mbps, but the upload speed is probably more than 20 Mbps, which is about 3 to 5 times different. Why are the upload speeds provided by telecom operators for mobile Internet services always much lower than the download speed? Why do you always have to upload videos or pictures to How can we improve it? The following is an explanation of these mobile Internet upload speed problems:
1. Why is the upload speed of mobile Internet always much lower than the download speed? What about speed?
A. Technical specifications and actual speed of mobile Internet:
Due to limited wireless bandwidth, the upload and download specifications of mobile Internet, like ADSL, usually use asymmetric broadband, and the download speed will be much greater than the upload speed. .
According to NCC’s survey (102 years), although the download speed of Taiwan’s 3G operators can reach an average of 3.47~5.44 Mbps, the upload speed is only about 1Mbps, a speed difference of 3~5 times.
Taiwan 4G LTE has carrier aggregation (CA) and MIMO multi-antenna multi-input multi-out architecture technologies, which can provide a maximum download rate of 300Mbps and an upload rate of 75 Mbps. As for the 4G operators currently in operation in Taiwan, Look, Taiwan Mobile and Chunghwa Telecom have 15mHz bandwidth. According to the moderator’s actual measurement, the current actual download speed can exceed 100Mbps, and the fastest upload speed can exceed 20 Mbps. For the 3G part, the actual upload speed is only 0.3XMbps~ 3.xMbps.
B. In line with user needs, operators can also save IP peering costs:
Since the Internet is mainly used for browsing, receiving emails, BT (BitTorrent)..., the actual download ( Receiving) demand is usually much greater than uploading (transmitting).
On the other hand, the upload bandwidth is smaller than the download bandwidth, which can help operators save costs. From the perspective of the back-end wired broadband Internet costs of each operator, upload The cost is the circuit cost + IP peering cost, and the downlink only has the circuit cost. To put it simply, uploading is like going outside the network, and downloading is like going inside the network. Telecom operators’ mobile Internet transmission charges are not divided into uploading and downloading. Saving costs will naturally limit the available bandwidth for higher-cost uploads. (For more information on the more expensive upload costs, see here.)
What is Peering (network interconnection)? Peering refers to two ISPs (Internet providers) interconnected and interoperable situations. For example, users of ISP-A can directly access websites placed in ISP-B through peering, and vice versa. In the past, whether ISP operators should target IP Peering This free issue has been debated endlessly.
2. Why the upload speed is always slow:
A. Use different Internet broadband types:
Different Internet broadband can provide upload The speeds vary. With the current 3G Internet access, the actual speed is 0.3Mbps~1. Slow; fiber optic broadband depends on the applied tariff. The ideal fastest upload value can reach 100Mbps.
If you use 3G or ADSL to upload, the speed cannot be improved due to the small upload bandwidth.
B. Uploaded file size and format:
The larger the uploaded video or image file, the longer the upload time will be. The size of the video or image file depends on the file type and video format. Due to the current mobile device As the camera performance improves day by day, the capacity of the image files or video files generated will become larger and larger. If you take pictures with a camera with more than 8 million pixels, the image file size will be about 2MB~3.5MB. If you use 3G 1Mbps to upload, 3MB The image file takes about 24 seconds. If uploaded at 4G 20Mbps, the ideal value is only 1.2 seconds (actually it will be longer due to bandwidth stability and the upload bandwidth of the other server). If you upload a 3-5 minute HD video, The file size is about 300 ~ 350MB. If 300MB is uploaded using 3G 1Mbps, a 300MB video will take 40 minutes. If uploaded using 4G 20Mbps, the ideal value is 2 minutes (the actual upload will be extended by 1.5~3 times).
C. Insufficient upload bandwidth of the other party's server or network traffic congestion:
The network speed measured by Speednet for uploaded videos or images is the network speed of the mobile device connected to the telecom operator's server, because the uploaded data must be uploaded through The ISP operator's external bandwidth and the upload bandwidth provided by the content website server are received. Because the size of the upload bandwidth is related to cost, usually content operators with strong financial resources (Youtube...) have a large bandwidth, but generally private websites upload The bandwidth is limited, and it is easy to cause traffic jams due to multiple people uploading.
The moderator recently recorded a 4-minute HD video with a file size of about 344MB. Although it is uploaded directly to Facebook at a speed of 4G 10 Mbps or above, it is ideal The original value is about 4.5 minutes, but the actual upload time is almost 2 times longer. But if uploaded to Youtube, the speed will be shortened.
On the other hand, since the 4G upload speed can reach up to 50Mbps, In addition to users' normal use of uploading videos or photos, it is expected that some people will use 4G mobile Internet as fiber optic broadband to set up private FTP Server, VPN Server, Air Video Server, network hard drive, P2P... which will occupy a large amount of uploads. Bandwidth, unstable 4G upload speed will be inevitable.
D. Internet TV or computer poisoning
Due to the current rampant Trojan viruses and rogue software, if you are not careful, you will accidentally hit a landmine, and the transmission volume is unknown. It was stolen without realizing it. In addition to Trojan viruses, the most common killer of upload transmission volume is Internet TV, such as PPS Internet TV (PPStream), Funshion, P2P software, GOGOBOX and other free space downloaders, Even plug-ins for live broadcast websites, etc., because they will continue to upload videos in the system background for other users to watch while you are not watching, even if you turn off the main program on the desktop, it will be useless. If you use a mobile phone to download or share to When using Internet TV software on your computer, you must pay attention to the Internet TV settings, otherwise you will lose a lot of traffic. In particular, once the upload bandwidth is insufficient, it will also cause the download speed to slow down, so you must pay special attention.
3. The upload speed is slow, how to improve it?
A. Choose 4G service or fiber optic broadband that provides high-speed Internet access: 3G mobile Internet access is limited by technical specifications, and the upload speed cannot be improved. If you want to enjoy higher speed If the upload speed is high, you must choose 4G service. If you want to use a large amount of upload bandwidth, it is recommended to use fiber optic broadband with higher stability and choose the most suitable upload transmission bandwidth
B. Choose the appropriate file format and cloud server Server upload: In order to speed up the upload speed, it is recommended to set the video or picture to be uploaded in the encoding format recommended by the website. If necessary, you can also consider compressing the file to shorten the upload time.
C. Avoid uploading during peak network hours And choose a server with a larger upload bandwidth
Avoid uploading during ISP peak hours to avoid upload traffic congestion. In addition, try to choose a cloud provider with a larger upload bandwidth to upload files to shorten the upload time. Google You are a good savage, you can make more use of it. It is recommended to upload videos to Youtube; upload photos to Picasa; upload music to Google Music Beta; video calls, Google+ video parties.
D. Avoid computer virus or Internet TV stealing traffic:
a. Install traffic monitoring software (mobile phone can download network speed meter; computer can download Netlimiter or open the computer's local network status such as viewing sent and received. If the upload (sent) is higher than the download (has (reception) is much more, and the numbers jump very quickly, and there is no program downloaded or resident on the mobile phone or computer, then it may be poisoned or a rogue program is causing trouble. You should quickly check and detoxify or change the settings.
b. Cancel the settings of PPS Internet TV and Fengxing.com
PPS Internet TV: Tools → Options. On-demand service. Uncheck "Allow starting PPS network service process".
Fengxing.com: Main menu →Settings→Options. General options. Uncheck "Do not turn off network transmission service when exiting".