Patent ID: 7894821

Claim:
A method of dynamic spectrum allocation in coexisting heterogeneous wireless networks, comprising: detecting, by a Mobile Station (MS), a serving Access Point (AP) for the MS and a coexisting AP (cAP) of the serving AP, acquiring a cAP Identifier (ID) of the cAP, and sending to the serving AP a service request message carrying the cAP ID and a bandwidth demand; the serving AP belonging to a Radio Access Technology (RAT) and the cAP belonging to another type of RAT; upon receiving the service request message, sending, by the serving AP, to a Dynamic Spectrum Allocation Module (DSAM) a spectrum request message carrying an AP ID of the serving AP, the cAP ID and a spectrum demand of the serving AP acquired according to one or more service request messages sent by the MS, the DSAM being a separate network device or integrated into an existing network device; dynamically allocating, by the DSAM, spectrum out of spectrums shared between the RAT and the another type of RAT using a dynamic spectrum allocation algorithm respectively to the AP and the cAP according to the AP ID, the cAP ID and the spectrum demand obtained, and sending a spectrum allocation result to the serving AP; the dynamic spectrum allocation result containing a spectrum amount allocated to the serving AP and a spectrum amount allocated to the cAP; allocating, by the serving AP, an appropriate bandwidth to the MS according to the spectrum allocation result from the DSAM.