This white paper proposes filter masks and guard bands to enable simultaneous operation of Bluetooth wireless technology and collocated Mobile Wireless Standards (MWS) systems such as LTE and WiMAX, operating in frequency bands adjacent to the 2.4 GHz Industrial, Scientific, and Medical (ISM) band within the same product. MWS systems utilizing both Time Division Duplexing (TDD) and Frequency Division Duplexing (FDD) mechanisms are considered.