Synchronous spectrum sharing by dedicated networks using OFDM/OFDMA signaling

摘要

A system and method for synchronous spectrum sharing for a dedicated network in a wireless communication system based on orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) signaling is disclosed. The system and method includes detecting a frame of a broadcast waveform and extracting idle spectrum information associated with the dedicated subchannel to the secondary user node. The system allows transmitting data from the secondary user node in unused symbol slots identified in the idle spectrum information thereby making efficient use of unused or idle spectrum. Accordingly, secondary users of the wireless communication system can dynamically form ad-hoc mesh network communications in fixed or mobile scenarios.

主权项

1. A synchronous spectrum sharing system for use in a wireless communication system having a primary user node and a secondary user node, the system comprising:
a frame detector configured to:
detect a frame of a broadcast waveform, the broadcast waveform being an OFDM waveform or an OFDMA waveform,extract down-link and up-link channel assignments for blocks within a dedicated network subchannel from the frame, andidentify idle spectrum blocks within the dedicated network subchannel of the frame using the extracted down-link and up-link channel assignments.