Method and apparatus of dynamic spectrum allocation in coexisting heterogeneous wireless networks
First Claim
1. 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.
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Abstract
Embodiments of this disclosure include a method and apparatus of dynamic spectrum allocation in coexisting heterogeneous wireless networks. A Mobile Station (MS) detects its own serving Access Point (AP) and a coexisting AP (cAP) of the serving AP, sends to the serving AP a service request message carrying a bandwidth demand and a cAP ID. The serving AP sends to a Dynamic Spectrum Allocation Module (DSAM) a spectrum request message carrying its own AP ID, the cAP ID and the spectrum demand. The DSAM allocates the spectrum dynamically using a dynamic spectrum allocation algorithm according to the spectrum demand, AP ID and cAP ID, and sends a spectrum allocation result to the serving AP, which allocates an appropriate bandwidth to the MS according to the spectrum allocation result. Thus, sharing spectrum dynamically between multiple coexisting wireless networks can be achieved, and spectrum utilization can be improved.
31 Citations
19 Claims
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1. A method of dynamic spectrum allocation in coexisting heterogeneous wireless networks, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus of dynamic spectrum allocation, comprising:
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a spectrum request processing module, for receiving spectrum request messages from Access Points (AP) of Radio Access Technologies (RATs), and obtaining, from the spectrum request messages, parameters related to a spectrum request; a Spectrum Allocation Table (SAT) storing module, for storing a spectrum allocation record corresponding to a serving AP belonging to a RAT and a coexisting AP (cAP) belonging to another type of RAT; a dynamic spectrum allocation module, which is a separate network device or is a module integrated into an existing network device, connected to the spectrum request processing module and the SAT storing module, for dynamically allocating spectrum out of spectrums shared between the RAT and the another type of RAT using a dynamic spectrum allocation algorithm respectively to the serving AP and the cAP through searching for the spectrum allocation record stored in the SAT storing module according to the parameters related to the spectrum request from the spectrum request processing module; a spectrum allocation result output module, connected to the dynamic spectrum allocation module, for outputting a dynamic spectrum allocation result from the dynamic spectrum allocation module to the AP sending the spectrum request message;
dynamic spectrum allocation result containing a spectrum amount allocated to the serving AP and a spectrum amount allocated to the cAP. - View Dependent Claims (17, 18, 19)
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Specification