Radio device, channel allocation method, and channel, allocation program

A channel allocation method in a wireless apparatus capable of supporting two types of modulation methods of different multi-value numbers, said wireless apparatus including:

• modulation method switching means for switching, when another wireless apparatus to be in wireless connection with the wireless apparatus is capable of supporting said two types of modulation methods, the modulation method between a first modulation method having a smaller multi-value number and a second modulation method having a larger multi-value number, while the wireless apparatus is communicating with said another wireless apparatus;
• storing means for storing a first threshold value of a parameter indicative of communication environment of transmission path, at which the wireless apparatus can communicate with said another wireless apparatus at least by the second modulation method of said two types of modulation methods;
• and parameter measuring means for measuring said parameter based on a signal received from said another wireless apparatus;
• said channel allocation method comprising the steps of:
• comparing, when there is a connection request from said another wireless apparatus to the wireless apparatus, said stored first threshold value of the parameter corresponding to said second modulation method with the measured parameter;
• and
• permitting, when it is determined that said measured parameter is not lower than said stored first threshold of the parameter, allocation of a wireless channel to said another wireless apparatus.

A channel allocation program in a wireless apparatus capable of supporting two types of modulation methods of different multi-value numbers, said wireless apparatus including:

• modulation method switching means for switching, when another wireless apparatus to be in wireless connection with the wireless apparatus is capable of supporting said two types of modulation methods, the modulation method between a first modulation method having a smaller multi-value number and a second modulation method having a larger multi-value number, while the wireless apparatus is communicating with said another wireless apparatus;
• storing means for storing a first threshold value of a parameter indicative of communication environment of transmission path, at which the wireless apparatus can communicate with said another wireless apparatus at least by the second modulation method of said two types of modulation methods;
• and parameter measuring means for measuring said parameter based on a signal received from said another wireless apparatus;
• said channel allocation program causing a computer to execute the steps of:
• comparing, when there is a connection request from said another wireless apparatus to the wireless apparatus, said stored first threshold value of the parameter corresponding to said second modulation method with the measured parameter;
• and
• permitting, when it is determined that said measured parameter is not lower than said stored first threshold of the parameter, allocation of a wireless channel to said another wireless apparatus.