1. A method for scheduling resource reservations of services in a service providing network having an operator domain and an Internet domain, the method being implemented by an aggregating scheduler and comprising: receiving, at the aggregating scheduler in the operator domain and from one of a plurality of application servers in the Internet domain, a resource reservation request indicating a preferred time period for delivery of a requested Multimedia Broadcast Multicast Service (MBMS) user service available in the network, wherein the plurality of application servers provide MBMS user services of different kinds to users, and wherein the application server from which the resource reservation request is received provides the requested MBMS user service; and scheduling a resource reservation of the requested MBMS user service based on: statistical information related to resource utilizations or related to reservations of one or more services available in the network; and the preferred time period for delivery of the requested service, wherein the preferred time period indicates a first time period, the statistical information indicates a second time period that does not overlap with the first time period, and the scheduling comprises scheduling the resource reservation of the requested MBMS in a third time period that is different than the first time period and the second time period.