Abstract: A master node may be configured with helper nodes in a one-to-many structure in a multicast tree for data streaming. A master node may receive network requests from the helper nodes in order to construct a pingback response. A master node may establish a network latency, for each of the helper nodes according to the pingback responses, to form a broadcast timing index. A master node may create routing tables from the broadcast timing index for local multicast routing at helper nodes within the multicast tree. A master node may send the routing tables from the master node to each of the helper nodes to arrange helper nodes in proximity to one another and create helper tiers within the multi-cast tree. A master node may stream data from the master node to the helper nodes according to a center-to-edge order of the multicast tree based on the routing table.

Abstract: Technology for laser communications is provided. In one example, a method may include generating a communication for transmission from a first terrestrial computing device to a second terrestrial computing device and encoding the communication as an optical transmission from a first laser array in communication with the first terrestrial computing device. The optical transmission may be transmitted, using the first laser array, to a first satellite and relayed from the first satellite to a second satellite using a second laser array at the first satellite. The optical transmission may be further relayed from the second satellite to the second terrestrial computing device using a third laser array at the second satellite. The lasers in the first, second and third laser arrays may be low power laser diodes configured for a power level less than 1 kW.