SMS¶

SMS between two autonomous networks¶

• we store the SMS in a queue/database in the local village to ensure SMS are ACKed as soon as possible to
  • minimize use of radio resource (air time)
  • smooth user experience (SMS can be sent without problems, like in normal network) - even in case of backhaul outage
• the village-local SMSC then stores the message in its queue and regularly (re-)tries to reach village B
• there is no queueing in village B in the current proposal, meaning SMS delivery is only successful if both MS B is registered and village A has connectivity to village B at the same time
  • this is now it works in regular GSM networks
  • we could probably also have a queue on the B side, this is TBD

SMS from external network¶

same as above, with MS-A and MSC-A replaced with some external entity. It starts with the mDNS query to find out where MS-B currently is registered