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Packet delivery procedure in 6LoWPAN enabled BLE node

SMahdiD
Prodigy 40 points

I am studying about developing a simple BLE 6LoWPAN network. My proposed topology is mentioned below:

internet - - - - - - - - -  BLE1 - - - - - - - - - BLE2

                                    |       \

                                    |          \

                                BLE3        BLE4

I know that all BLE devices have IPv6 address and can be accessible from internet. The connection between internet and BLE1 may be Ethernet or WiFi. BLE devices are connected together as start topology in which BLE1 is master. Then I know that the BLE connections perform TDMA mechanism.

My question is how the route table in BLE1 should be set? (An entity in a route table usually consist of a destination target and an interface which should be used to go through to reach the destination. BLE2, BLE3 and BLE 4 have same entity in BLE1 route table with same outgo interface but different TDMA slice time. But I don't know how this kind of entity could be set)    

Thanks