In cognitive radio system, secondary users are queued when primary users are utilizing its own channel. In that case secondary transmitters are idle and waiting for that channel to be freed. If so, why not use that idle secondary transmitter for primary users as helping hands by transmitting primary's data. This book explore the scarcity and management of current spectrum issue and proper management in three distinct methodologies. Firstly, Field surveying of spectrum within the range of 0.1 GHz to 3 GHz is done for finding white space. Secondly, white space is managed using user friendly...