A method at a central coordination node for coordinating resources among a plurality of operating networks that is communicatively connected to the central coordination node, comprising: receiving blanking determination related information reported from the plurality of operating networks; determining a blanking pattern for at least one of the plurality of operating networks based at least on the blanking determination related information, wherein said determining a blanking pattern at least comprises determining a blanking ratio and blanking positions for the blanking pattern, the blanking ratio being a ratio of resources to be blanked out relative to all available resources for an operating network, and the blanking pattern specifying how many resources and which resources need to be blanked out; and distributing the blanking pattern to the at least one of the plurality of operating networks, characterized by: said blanking determination related information at least comprises: a blanking ratio budget estimated at the operating network, the blanking ratio budget of the operating network defining how many radio resources will be proposed by the operating network to be blanked out relative to all available resources; and one or more blanking ratio requests estimated by the operating network for one or more peer operating networks that interfere with that operating network, the blanking ratio request defining how many radio resources of the operating network are requested by said one or more peer operating networks to be blanked out relative to all available resources, wherein said determining a blanking ratio comprises: for the operating network, determining the blanking ratio based on a comparison between its estimated blanking ratio budget and one or more blanking ratio requests estimated for it, wherein said determining the blanking ratio based on the comparison further comprises: for the operating network, if its estimated blanking ratio budget is not less than any of the blanking ratio requests estimated for it, then determining a maximum one of the blanking ratio requests estimated for it as the blanking ratio of that operating network; or for the operating network, if any of the blanking ratio requests estimated for it is greater than its estimated blanking ratio budget, then adjusting at least one of that greater blanking ratio request and the estimated blanking ratio budget such that no blanking ratio request is greater than the estimated blanking ratio budget after the adjusting, wherein said adjusting comprises: adjusting at least one of the estimated blanking ratio budget and the greater blanking ratio request, based on a comparison between an average blanking ratio over a previous certain time period of the operating network that reports the greater blanking ratio request and an average blanking ratio over the previous certain time period of the operating network that has the estimated blanking ratio budget less than the greater blanking ratio request. receiving blanking determination related information reported from the plurality of operating networks; determining a blanking pattern for at least one of the plurality of operating networks based at least on the blanking determination related information, wherein said determining a blanking pattern at least comprises determining a blanking ratio and blanking positions for the blanking pattern, the blanking ratio being a ratio of resources to be blanked out relative to all available resources for an operating network, and the blanking pattern specifying how many resources and which resources need to be blanked out; and distributing the blanking pattern to the at least one of the plurality of operating networks, a blanking ratio budget estimated at the operating network, the blanking ratio budget of the operating network defining how many radio resources will be proposed by the operating network to be blanked out relative to all available resources; and one or more blanking ratio requests estimated by the operating network for one or more peer operating networks that interfere with that operating network, the blanking ratio request defining how many radio resources of the operating network are requested by said one or more peer operating networks to be blanked out relative to all available resources, wherein said determining a blanking ratio comprises: for the operating network, if its estimated blanking ratio budget is not less than any of the blanking ratio requests estimated for it, then determining a maximum one of the blanking ratio requests estimated for it as the blanking ratio of that operating network; or for the operating network, if any of the blanking ratio requests estimated for it is greater than its estimated blanking ratio budget, then adjusting at least one of that greater blanking ratio request and the estimated blanking ratio budget such that no blanking ratio request is greater than the estimated blanking ratio budget after the adjusting,