"The website you want to see is not displayed." "The video stops well and the mark is around in the middle ..." Have you ever experienced not connecting to the Internet even though it's not out of the area?It may be a "packed package".
Do you know why this package happens?The resolve method?Does it happen even in the 5G era with "high -speed large capacity"?
I asked SoftBank staff about Gimon about such clogging.
Softbank Technology -Unit Mobile Technology General Mobile Network Headquarters Radio Design Headquarters Area Design Department Director Nobu Hashimoto joined the company in 1997.He has been engaged in mobile networks design, such as mobile network monitoring and maintenance, monitoring system construction, and mobile network deployment plan formulation.He is currently promoting the entire area development plan and design business
Softbank Technology -Unit Mobile Technology Mobile Network Headquarters Radio Development Development Development Department Hideaki Hatanaka Joined in 2002.Since he joined the company, he has been engaged in design, network capacity management, parameter design, and equipment introduction.Currently, he promotes radio software development and introduction work
Hashimoto "First of all, the clogging of the package means that the number of antennas on the mobile phone is sufficient, but the communication speed is not out of service, such as" Video playback does not start "and" web page is not over ".It is a phenomenon that is extremely slow. It is caused by the slow communication speed, so the data transfer process is not catching up.
By the way, communication is transmitted with digital signal 128 bytes as one data, but packets refer to the transmission unit.In other words, the packet clogging is "packet clogged."As for this image, the packet that is transmitted between the base station and the terminal seems to be "slow" so that there are many cars and congestion. "
When a mobile phone is used at the same time in a place where there are many people, that is, when radio wave interference is occurring.
Hatanaka "In other words, when radio wave interference is occurring, traffic (data transferred on the network within a certain period of time) increases, and many users use it simultaneously, so your signal (radio wave) is used.The so -called radio interference that is buried in the signal of other users is generated and the radio wave quality deteriorates. For example, it is more likely to occur at platforms at stations, fireworks, and outdoor festivals when commuting.
"Pake clogging" may occur when the connection of the base station to be connected (handover) fails (handover) or the loss of the data packet (packet loss) due to reconnection processing.。This is a case where the switching of base stations fails and the quality of radio waves deteriorates in a phenomenon that occurs while traveling on a vehicle. "
Does clogging only on smartphones occur?
Hashimoto "Because it is a communication device, it may occur even with Wi-Fi equipment and IoT home appliances in the house. Also, since the terminal is evolving, the current smartphone is now handover than the old smartphone.It is difficult to packet loses at that time, and there may be the cause of the application side. It is not a simple package factor. "
In order for data transmission and reception is required, the procedure is required, but TCP (Transmission Control Protocol), which is the procedure, has reached the data safely every time data is transmitted to increase the reliability of communication.We have a confirmation response (ACK) to inform you of what we have done.In TCP, if the confirmation response is not returned within a certain period of time, the data will be resumed by determining that "packet loss has occurred" and the data will be resent, so this resend will be performed in the transmission route.
In TCP Communication, in order to provide reliable communication, communication is performed based on ACK, which confirms that the communication partner has received data.Users experience "package clogging" in order to delay the completion of the data required for the application to operate for the processing congestion and radio wave environment of the base station equipment.
How is packet loss different from clogged package?
Hatanaka "The quality of the radio waves will be worse due to the interference of interference when there is a connection request at the same time.At the moment of switching the base station, the synchronization occurs between the base station and the terminal, and the data cannot be transmitted and received well, which loses packets, that is, packet loss.
From the point of view of the user, the remaining packets required to start the application are not received, that is, the application is not moving, but on the transmission road, the sending and receiving failed and receiving and receiving it failed.The data is resent, but if the resend data is delayed due to congestion (Fukuso) etc., the application will not be launched, and the user will experience the clogging of the package.Packet loss is one of the triggers of packaging. "
Please tell me how to deal with a package with a smartphone.
Hashimoto "Try reconnecting with" Power ON / OFF "or" Flight Mode ON / OFF ". If it is clogged due to handover failure, I think it will be restored.This works by the base station to allocate to the vacant frequency.
Softbank has a lot of frequency, so if the clogging of a handover failure is clogged, the radio environment will be transferred earlier to a better frequency.Also, in cases used by many people in events, etc., temporary base stations will be installed in advance to increase load distribution and frequency. "