Patent application number | Description | Published |
20110069638 | COGNITIVE COMMUNICATION NETWORK SYSTEM AND COMMUNICATING METHOD THEREOF - Object: To provide a mechanism and a function of a system that can determine a communication method and the like effectively utilizing frequency resources, considering priority of each communication, in a cognitive communication network system of a frequency shared type or the like assuming that a given frequency band is shared by a plurality of systems in use. | 03-24-2011 |
20120135770 | METHOD FOR ADJUSTING CHANNELS IN COGNITIVE WIRELESS COMMUNICATION, AND COGNITIVE WIRELESS COMMUNICATION SYSTEM CAPABLE OF IMPLEMENTING THE METHOD - There is disclosed a channel adjusting method capable of suppressing the occurrence of interference between a cognitive pilot channel (CPC) and an auxiliary control channel (ACS) in cognitive wireless communications. According to the channel adjusting method for use in cognitive wireless communications, initially, a connection using a cognitive pilot channel (CPC) is set up. Thereafter, it is determined whether or not a spectrum sensing channel (ACS) is to be utilized. If yes, it is then determined whether or not any interference occurs between the spectrum sensing channel (ACS) and the set-up cognitive pilot channel (CPC). This allows an adjustment to be performed such that no interference occurs between the cognitive pilot channel (CPC) and the spectrum sensing channel (ACS). | 05-31-2012 |
20120135772 | INFORMATION SHARING METHOD IN COGNITIVE RADIO COMMUNICATION, COGNITIVE RADIO COMMUNICATION DEVICE, AND COGNITIVE RADIO COMMUNICATION SYSTEM - In a cognitive radio communication device, before a communication link for the cognitive radio communication is established, a control channel which is a common channel which can be used by a plurality of cognitive radio communication devices is detected. By exchanging sensing information and sensing control information among the plurality of radio communication devices using the detected common channel, the information is shared. The plurality of cognitive radio communication devices share the sensing information and the sensing control information, and use the information for determining a channel used for spectrum monitoring and data communication, and the like. | 05-31-2012 |
20120135780 | POWER CONTROL METHOD IN COGNITIVE RADIO COMMUNICATION, COGNITIVE RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION DEVICE - Provided is a power control method, etc., in cognitive radio communication, by which power control can be effectively performed without a large indirect cost. In the power control method, a target value of SNR is estimated on the basis of the control information relating to interference. Subsequently, communication power used for the cognitive radio communication is adjusted on the basis of the estimated target value of SNR. Thereby, power control can be effectively performed without a large indirect cost. | 05-31-2012 |
20120140793 | SPECTRUM SENSOR FOR COGNITIVE WIRELESS COMMUNICATION AND METHOD FOR COGNITIVE WIRELESS COMMUNICATION - Provided is a spectrum sensor for cognitive wireless communication whereby it is possible to improve communication efficiency. In a cognitive wireless communication system, a spectrum sensor senses spectra in multiple frequency bands. A spectrum sensor is configured to be able to operate in one operation mode selected from among a spectrum sensing mode for sensing spectra, and a communication mode for communicating with a wireless communication device. Further, the spectrum sensor is provided with a controller for controlling the operation mode. The controller switches between the above-mentioned operation modes during the symbol period of an ultra-wideband physical layer (UWB PHY). | 06-07-2012 |
Patent application number | Description | Published |
20120287804 | Wireless Communication System Applied To Aviation Industry And Airband Interference Detection Method - Provided is a wireless communication system capable of increasing safety in the aviation industry, and applicable to the aviation industry. | 11-15-2012 |
20120322476 | Wireless Communication System, Coexistence Manager Installed In Said System, And Method For Wireless Communication - Disclosed is a wireless communication system capable of avoiding interference even when a network including a secondary user coexists. The wireless communication system includes a primary user belonging to a first network, a first secondary user belonging to a second network, and a coexistence manager (CM). The coexistence manager (CM) acquires information relating to spectrum holes that are, at least temporarily, not in use by the primary user. In addition, the coexistence manager (CM) determines whether or not usage of the spectrum holes by the first secondary user causes interference. If the determination result is that interference is caused, coexistence manager (CM) notifies to this effect a second secondary user belonging to a third network, which differs from the second network. | 12-20-2012 |
20130064237 | Wireless Communication System, Cluster Head Equipment (CHE) Installed In Wireless Communication System, And Wireless Communication Method - Disclosed is a wireless communication system and the like that can avoid interference even if a plurality of networks coexist. The wireless communication system includes a primary user, cluster head equipment, and a secondary user. The cluster head equipment is for providing a local area network to a cluster region containing the abovementioned primary user. Also, the cluster head equipment contains: an acquisition means that acquires one or both—of information regarding the primary user and information regarding a primary signal—and the like; and a transmission means that transmits information to the secondary user. Then, using this wireless communication system, the secondary user performs cognitive wireless communication or the like on the basis of the information received from the transmission means of the cluster head equipment. | 03-14-2013 |