Wireless communication device, wireless communication system, wireless communication method and program

Abstract

Provided is a wireless communication device which includes a notification information transmitting unit for transmitting, via a wireless communication network, notification information of the wireless communication device, a notification information receiving unit for receiving notification information transmitted from another device, a frequency switching unit for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received, and a transmission processing unit for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device.

1 . A wireless communication device comprising:
 a notification information transmitting unit for transmitting, via a wireless communication network, notification information of the wireless communication device;   a notification information receiving unit for receiving notification information transmitted from another device;   a frequency switching unit for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received; and   a transmission processing unit for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device.   
     
     
         2 . The wireless communication device according to  claim 1 ,
 wherein transmission of the notification information by the transmitting unit and waiting for receipt of the notification information by the receiving unit are performed in time-division manner, and   wherein the wireless communication device includes
 a random period setting unit for setting a cycle for transmitting the notification information or a waiting cycle for the receipt of the notification information to a random period. 
   
     
     
         3 . The wireless communication device according to  claim 1 , comprising:
 an acknowledgement transmitting unit for transmitting, in case the notification information transmitted from another device is received by the notification information receiving unit, the acknowledgement to such other device.   
     
     
         4 . The wireless communication device according to  claim 1 , comprising:
 a reception processing unit for receiving the acknowledgement to the notification information of the wireless communication device from another device which has received the notification information of the wireless communication device.   
     
     
         5 . The wireless communication device according to  claim 1 , wherein transmission of the notification information by the transmitting unit is performed at a determined specific frequency. 
     
     
         6 . The wireless communication device according to  claim 1 , wherein reception of the notification information by the receiving unit is performed at a determined specific frequency. 
     
     
         7 . The wireless communication device according to  claim 1 ,
 wherein the transmitting unit transmits a beacon as the notification information, and   wherein the receiving unit receives an acknowledgement to the beacon transmitted as the notification information.   
     
     
         8 . The wireless communication device according to  claim 1 ,
 wherein the transmitting unit transmits a probe request as the notification information, and   wherein the receiving unit receives a probe response to the probe request transmitted as the notification information.   
     
     
         9 . A wireless communication system, comprising:
 a first wireless communication device including
 a first notification information transmitting unit for transmitting, via a wireless communication network, notification information of the first wireless communication device, 
 a first notification information receiving unit for receiving notification information transmitted from another device, 
 a first frequency switching unit for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received, and 
 a first transmission processing unit for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device; and 
   a second wireless communication device including
 a second notification information transmitting unit for transmitting, via the wireless communication network, notification information of the second wireless communication device, 
 a second notification information receiving unit for receiving notification information transmitted from another device, 
 a second frequency switching unit for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received, and 
 a second transmission processing unit for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device, 
   wherein the second wireless communication device receives the notification information transmitted from the first wireless communication device, transmits the acknowledgement to the first wireless communication device, and performs the data transmission process with the first wireless communication device.   
     
     
         10 . A wireless communication method, comprising the steps of:
 transmitting, via a wireless communication network, notification information of a wireless communication device;   waiting for notification information transmitted from another device;   successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received; and   performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device.   
     
     
         11 . A program for causing a computer to function as:
 means for transmitting, via a wireless communication network, notification information of a wireless communication device;   means for receiving notification information transmitted from another device;   means for successively switching, at random cycles, a frequency at which the notification information is transmitted or a frequency at which the notification information is received; and   means for performing a data transmission process after transmitting or receiving an acknowledgement to the notification information to/from such other device.