Techniques for efficiently transmitting various types of signaling on the forward and reverse links in an OFDM-based system are described. Instead of specifically allocating subbands to individual signaling channels, signaling data for a signaling channel on a given link is sent as “underlay” to...http://www.google.de/patents/US20060045001?utm_source=gb-gplus-sharePatent US20060045001 - Transmission of signaling in an OFDM-based system
