1. A session resource broker for customizing resources for an application session in an access network, said session resource broker comprising: an application interface for reception of at least one application request from at least one application server coupled to said application interface, wherein said session resource broker further comprises: a translator for translating a quality parameter value in one of said application requests into a physical layer parameter value; and an access node interface for transferring said physical layer parameter value to an access node for adoption thereby as a physical layer parameter of a physical layer connection between said access node and a device of said application session corresponding to said application request.