Facebook, Inc. (Menlo Park, CA)

Methods, apparatuses, and systems are described to synchronize nodes within wireless networks. One method involves identifying synchronization paths between synchronization reference nodes of the wireless network and each non-reference point in the wireless network, wherein each synchronization path comprises one or more wireless hops between the reference nodes that synchronize and the non-reference Node, determining a amount of timing slots that are required for supporting each of the identified synchronization paths, and selecting at least one of the synchronization paths between each non-reference as well as at least one of the synchronization reference nodes , based on the number of wireless hops from each of the identified synchronization routes and the identified amount of timing slots required to accommodate each of the identified synchronization routes.

Certain wireless networks work or operate more efficiently when nodes in the wireless networks are time-synchronized.

It is essential that there be methods, devices, and systems to allow time synchronization within a wireless network.

An embodiment relates to a method of synchronizing nodes of wireless networks. The method includes identifying synchronization paths between one or more synchronization reference nodes of the wireless network and each non-reference node of thewireless network, wherein each synchronization reference node receives a synchronization signal or is designated as a source of the synchronization signal, and each non-reference node does not directly receive the synchronization signal and is notdesignated as a source of the synchronization signal, wherein each synchronization path includes one or more wireless hops between the synchronization reference nodes and the non-reference node, determining a number of timing slots needed for supportingeach of the identified synchronization paths, and selecting at least one of the synchronization paths between each non-reference node and at least one of the synchronization reference nodes based on a number of wireless hops of each of the identifiedsynchronization paths and the determined number of timing slots needed to support each of the identified synchronization paths.

Another configuration includes wireless network. The wireless network is comprised of a number of reference and synchronization nodes as well as a controller. For an embodiment, the controller operates to identifysynchronization paths between one or more synchronization reference nodes of the wireless network and each non-reference node of the wireless network, wherein each synchronization reference node receives a synchronization signal or is designated as asource of the synchronization signal, and each non-reference node does not directly receive the synchronization signal and is not designated as a source of the synchronization signal, wherein each synchronization path includes one or more wireless hopsbetween the synchronization reference nodes and the non-reference node, determine a number of timing slots needed for supporting each of the identified synchronization paths, and select at least one of the synchronization paths between each non-referencenode and at least one of the synchronization reference node based on a number of wireless hops of each of the identified synchronization paths and the determined number of timing slots needed to support each of the identified synchronization paths.

Other aspects and advantages of the described embodiments will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the describedembodiments.

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