2G, 3G, 4G Dead Zones in Bangalore

At the Fastah Project, our objective is to assess the world’s mobile internet and WiFi, and help build intelligent network systems. A metric we use to measure a network’s slowness is Latency — the time a packet of information takes to go from its source to its destination in the system. The higher the latency, the poorer the network quality.

In our previous posts, we have been looking at the latency of popular mobile network providers in various Indian cities and how it varies over the course of a day. In order to understand these numbers better, and use them in developing practical solutions, it is key to know how they vary over a region. It may be that specific dead zones contribute to higher average latency of a given provider.

The animations below show the variation of performance over a typical weekday (weekends have been ignored) across Bangalore. The data has been collected from late October to early February. The number of data points for each provider is approximately as follows: 76600(Airtel), 38000(Jio), 12,400 (Idea), and 16500 (Vodafone).

Airtel

Airtel: Variation of Network Quality over the course of a typical weekday, in terms of latency, broadly classified as Excellent (less than 100 ms), Average (1 00–3 00 ms), and Poor (above 300 ms ). Main Problem Areas: Baghmane Tech Park, Malleswarm

The oldest and most popular network provider in the city definitely has a difficult patch around Tin Factory, Bagmane Tech Park and Kaddagaspura, which seems to be quite persistent. Other recurring problem areas are Malleswaram and Yeshwantpur

Reliance Jio

Reliance Jio: Variation of Network Quality over the course of a typical weekday, in terms of latency, broadly classified as Excellent (less than 100 ms), Average (1 00–3 00 ms), and Poor (above 300 ms ). Main Problem Area: City Centre (MG Road), Yeshwantpur

Jio does not display any persistent dead zones in particular, but most of their poor performance comes from the city center (MG Road, Trinity Circle) and some from Yeshwantpur, Dairy Circle and along Bellandur Road during morning and evening rush hours.

Vodafone

Vodafone: Variation of Network Quality over the course of a typical weekday, in terms of latency, broadly classified as Excellent (less than 100 ms), Average (1 00–3 00 ms), and Poor (above 300 ms ). Main Problem Area: Yelahanka, Bellandur Road

In addition to the general problem area along Bellandur Road, Vodafone has a prominent dead zone in the North, in Yelahanka. This may be due to some interference or shielding from the Air Force Base set up here.

Idea

Idea: Variation of Network Quality over the course of a typical weekday, in terms of latency, broadly classified as Excellent (less than 100 ms), Average (1 00–3 00 ms), and Poor (above 300 ms ). Main Problem Areas: Yeshwantpur, Bellandur Road

Compared to the above three telecom giants, we have far fewer data points for Idea as their subscriber base in Bangalore is relatively small. However, their coverage radius seems to be large enough. It may be due to the smaller user base that their latency values are excellent in the city. Some red zones are along Bellandur road and the highway out of Yeshwantpur towards Tumkur.

If you’d like to contribute to our research or have a question, please leave a comment below, or write to us at research@getfastah.com. To know more about our network sensing API, visit getfastah.com/api.