SOFTBANK MOBILE discloses efforts to restore base stations, the coverage area almost recovers

It is remembrance that mobile phone companies suffered great damage to base station facilities due to the Great East Japan Earthquake, but SOFTBANK MOBILE made public the efforts related to restoration.

We have already finished all works that we can do at our company, and the coverage area has almost recovered.

Details are as below.
SOFTBANK MOBILE BASE STATION REVIEW Effort | SOFTBANK MOBILE Corp.

According to the SOFTBANK MOBILE press release, we continued to provide the same communication quality as before the earthquake about the situation that the company's communication service is hard to connect or can not be used, which occurred after the Great East Japan Earthquake It seems that the work of the company side was completed on April 28 regarding the restoration work of the mobile phone base station.

Softbank Mobile's base station was affected by 3786 stations as of morning March 12, 2011 immediately after the earthquake but temporary base stations combining satellite links and IP mobile base station equipment By means of countermeasures such as on April 14, 2011 the coverage area of ​​mobile phone service has recovered to almost the same state as before the disaster.

However, although the remaining 203 stations with a lot of damage were time-consuming to restore, all the base stations that can be rebuilt will be rebuilt, the introduction of transmission via satellite lines, power supply by generators and accumulators, By doing so, the restoration correspondence work for the 99 base stations is completed, and 15 of them are recovered to the state waiting for construction such as electric power recovery by electric power companies etc.

The treatment and countermeasures and breakdown of 203 base stations that were unrecovered as of April 14 are as follows. Together with the base stations where the damage in the nuclear power plant area area and the tsunami etc is great and the station which became the waste station due to the inundation area are combined to 74 stations.


As you can see from the graph, the degree of recovery is clearly understood.


It seems that the base station is being rebuilt. Although it can no longer be used due to the outflow of the entire base station and communication equipment, the user who uses the base station is confirmed, and in the place where the safety of the ground and foundation is secured, the new base station is rebuilt in the same place It is.


If the transmission line is faulty and the base station is not functioning, restore the base station using the satellite line.


Power is supplied by generators and storage batteries to base stations in areas where power has not recovered.



Using the micro entrance, temporary leased line etc., the relay transmission line is restored.