Methods, apparatus, and systems for providing effective slice-level load metrics reporting and load balancing are disclosed. In one example aspect, a wireless communication method includes transmitting, by a first network element, a request to a second network element requesting resource status at a slice level of a slice. The slice represents a logical network of a physical network infrastructure. The method also includes receiving, by the first network element, load information at the slice level from the second network element in response to the request.