congestion Archives — LIRNEasia

I was hoping we’d get more reports about congestion caused by changing use patterns caused by people confined to their homes. Here is a report on India. Despite the impact on their business, India’s operators have complied with regulatory requests aimed at encouraging subscribers to stay at home. These included providing free voice minutes as well as making prepaid accounts valid for a longer period. While subscribers are evidently topping up their airtime less under the lockdown, they do not appear to be using their devices any less – quite the contrary.
We have been talking about cell broadcasting since 2007, at least. The technology has been used in the US before, but it appears this was the first time it was used to catch a suspect. Frank DiGirolamo was stepping out of a Manhattan deli on 37th Street and Seventh Avenue on his way to work when the alert went out. “All of a sudden, I heard the phones from people walking in every direction,” he said. “Even the fruit stand guy’s went off.
Haven’t had time to analyze this election promise, so was very happy to see a CPRsouth alumnus take an excellent run at it. Usually, these free Wi-Fi services have lower speeds compared to the average home connection, and often come with a data or a time cap. Perth, for example, offers free public Wi-Fi in a certain area, with a limit of 50MB per connection. Do your stuff, and then get out of the way; let the next user in. Effective, intelligent limiting is one solution.
When I was last in Myanmar, 3G was said to be available, people had smartphones, but congestion made connecting a challenge. It appears the operators are responding. According to Takashi Nagashima, CEO of MPT-KDDI-Sumitomo joint operations, the network improvement plan kicked off on November 6. The capacity of congested 3G sites in Yangon and Nay Pyi Taw was expanded. Capacity of those sites is now about 50 per cent higher than before November 6.

Wireless that works in a crowd

Posted on February 19, 2014  /  1 Comments

The unpredictability of what large numbers of people do with their wireless devices when in a crowd has caused problems ever since wireless became the preferred last mile solution. But there is a solution on the horizon? A recent demonstration in San Francisco showed off a technology that Steve Perlman, a serial entrepreneur and inventor who sold WebTV to Microsoft for more than $500 million in the late 1990s, contends will give mobile users far faster cellular network speeds, with fewer dropped phone calls and other annoyances, even in stadiums and other places where thousands of people use mobile phones at the same time, Nick Wingfield reports. In the demonstration, eight iPhones played different high-definition movies from Netflix at once, all receiving the video wirelessly. Rather than causing the local network to stumble under the strain of so much data jamming the airwaves at once, the video played on all the screens with nary a stutter.
As attention shifts to broadband quality of service experience, more tool for understanding what’s going on are becoming available. One tool Glasnost is described in the NYT: In general, the Glasnost results suggest that telecom and cable TV operators, when they do use throttling, do so mostly to suppress bandwidth hogs and ensure a reasonable experience for all of their customers. Mr. Dischinger, now a computer engineer in Innsbruck, Austria, said throttling was much more commonly used by operators of mobile phone networks, which have much less capacity than landline grids. But with operators starting to sell superfast landline broadband service for heavy data users, such as Deutsche Telekom’s high-speed fiber-to-the-home service, the competition for bandwidth — and the need for throttling — will only increase, Mr.
Hotels are sort of like countries with regard to broadband use. The guests have to obtain broadband connectivity from the hotel (let’s disregard the 3G option for now); residents in a country have to obtain broadband from providers licensed by the government. When quality drops, users hold the hotel accountable; in case of a country, the ISP is held accountable. In the case of hotels, the traveler can choose to not stay in the hotel where connectivity is poor. In the case of a country, one can switch ISPs, but if the constriction is in the cables linking the country to the Internet cloud, it may not make much difference.
There are many who think telecom networks should be congestion free, always, like during or just before a disaster.   It is practically impossible because no network can be economically designed and run for unusual peak loads.  The report that mobile companies in the US are asking their customers to go easy on calls and MMS, is illustrative of the phenomenon.  Why would they walk away from an opportunity to make money? The largest cellphone carriers, fearful that a communicative citizenry will overwhelm their networks, have taken the unusual step of asking people to limit their phone calls and to delay sending photos.
In all networks, there is a perpetual debate about the growth of whatever flows across it (data, voice telephony, traffic. electricity) and what levels of investment are most appropriate for carrying the future load without deterioration of quality.  This debate is going on now, about the Internet and the load likely to be placed on it by proliferating video, the so called exaflood.  But then, profits are essential for investment.   The quote below is about a data drought that could drive down profits and cause all kinds of bad things to happen.