Hi All, I had a small question on synchronization in TDMA protocols.
Lets assume the case where we have a master and some nodes and each of the nodes have their own pre-assigned time slot. Supposing each TDMA node has a crystal-clock which has some deviation(lets say few tens of ppms), how do we manage to wake the nodes up correctly at their pre- assigned time slot ? One way is to somehow extract master's clock and then synchronize all the slave clocks with master. But supposing clock extraction is too costly and cumbersome ...is there any other way ? How is this managed in 802.15.4 protocols ?
regards ashutosh