| 20100232358 | FRAME BASED, ON-DEMAND SPECTRUM CONTENTION PROTOCOL VECTOR MESSAGING - A frame-based, on-demand spectrum contention protocol provides a fine grain allocation of a shared spectrum resource in a cognitive radio network. Each frame of a plurality of synchronized superframes is allocated independently based on contention criteria. As demands for increased spectrum resources are realized, targeted requests are issued to base stations currently occupying targeted data frames via vector messages. Such messages, carried by a beacon period within each data frame, identify to the current occupier of a data frame which data frames have been targeted for contention. A contention resolution occurs at the base station currently occupying the targeted spectrum resource and the results of which are communicated via other vector messages. After a predetermined period of time a vector message announces the release of the data allowing the contention winner to occupy the contended spectrum resource. | 09-16-2010 |
