Radio transmission control method and radio transmission device

A radio transmission control method for conducting communication on a predetermined radio transmission channel using asynchronous transmission under control of a control station in a radio network including one control station and a plurality of communication stations capable of radio communicating with the control station, said radio transmission control method comprising the steps of:

• inhibiting a polling operation conducted from said control station to each communication station on the network, in a steady state;
• transmitting a request signal to said control station when a transmission demand has occurred in each of said plurality of communication stations;
• starting to conduct the polling operation conducted from the control station when the control station has received the request signal;
• time dividing said radio transmission channel into an asynchronous information transmission region and a management information transmission region, and
• transmitting the request signal in said management information transmission region.

A radio transmission device comprising:

• radio communication means for conducting transmission and reception of radio signals with a device in a wireless radio network based on a polling signal;
• input means for inputting information to be transmitted by said radio communication means;
• detection means for detecting a state of information supply to said input means or a state of a device connected to said input means;
• and
• control means for determining whether a communication demand is occurring based on said detecting of said detection means, and for causing said radio communication means to transmit a request signal to a transmission source of said polling signal in response to a determination that a communication demand has occurred, wherein said radio communication means is brought from a dormant state of reduced power consumption to an operative state upon the determination that the communication demand has occurred, wherein
• a radio transmission channel whereby said radio communication means conducts communication is divided into an asynchronous information transmission region and a management information transmission region, and
• said request signal from said radio communication means is transmitted in said management information transmission region.