A method and apparatus for dynamically assigning persistent resources in a wireless communications system is provided. A method comprises transmitting a first boundary indication to a mobile station, and transmitting a position indication to the mobile station, wherein the position indication corresponds to a network resource assigned based on a network resource request, the position indication is relative to the first boundary indication. The method also comprises transmitting a second boundary indication to the mobile station in response to detecting a change in a position of a boundary, and transmitting a first transmission to the mobile station using a network resource corresponding to the position indication or receiving a second transmission from the mobile station using a network resource corresponding to the position indication, wherein the position indication is relative to the second boundary indication. The first boundary indication is based on a position of the boundary.