Late November 2015 Sweden was hit yet again by a storm causing significant damage to buildings and infrastructure. An unfortunate but unavoidable consequence of these storms are the power outages and transmission failures causing outages in mobile networks. Large areas of southern Sweden was impacted as people woke up Monday morning to start a new week.
Swedish mobile operators and mobile authorities have worked to increase the resilience of the mobile networks and the availability of up-time reports for the authorities and subscribers. The mobile networks have become more resilient to these kind of situations as most places now are served by alternative transmission routing and overlapping coverage from 2G, 3G and 4G (LTE) infrastructure. Below are some screen captures taken from the CellVision “operational status maps” on Telia.se website during the first three days after the storm. The maps show where the mobile coverage was affected and where there might have been reduced service. Green colour indicates normal service, orange colour indicates areas with remaining but reduced coverage or reduced capacity, and finally red areas indicates no availability of service at all.
Two interesting observations can be made when looking at these snapshots in time: One is that there are very few areas that suffer from complete loss of coverage when looking at the combined use of 2G, 3G and 4G networks. The other is that there is a significant rate of recovery of the network during the first few days after the storm.
With solutions such as CellVision’s Network Status Map the service providers can better handle challenging situations such as this one in southern Sweden. Customers, authorities and media can stay updated on the situation, they can see that recovery is progressing, and they can even get specific information about the ongoing work to restore the network on particular locations and addresses.