Table 1 Spectrum sharing states.
From: COMAS: A Cooperative Multiagent Architecture for Spectrum Sharing
| SUi: ready to send CfP |
|---|---|
| PU1: PU agent's cache (CfP arrives) |
| PU2: PU agent's cache (CfP arrives) |
| PU1: ready to receive CfP |
| PU2: ready to receive CfP |
| SUi: CfP sent and wait for proposals |
| PU1: CfP received |
| PU2: CfP received |
| SUi: SU agent's cache (proposals arrive) |
| PU1: proposal sent and wait for the final response |
| PU2: proposal sent and wait for the final response |
| SUi: proposal received |
| PU1: PU agent's cache (accept arrives) |
| PU2: PU agent's cache (reject arrives) |
| PU1: temporary waiting phase |
| PU1: further CfP receiving stopped |
| PU2: reject received and temporary waiting phase |
| PU2: further CfP receiving stopped |
| PU1: ready to share the acquired spectrum |
| SUi: ready to utilize spectrum |
| SUi: spectrum utilized and ready to pay price |
| PU1: spectrum shared and ready to receive price |
| SUi: price paid |
| PU1: price received |
