Wireless communication device and wireless communication method
地域：
Tokyo
摘要
A wireless communication device that includes circuitry that receives a physical layer (PHY) header from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which the wireless communication device belongs, and controls transmission power on a basis of allowance signal information obtained in reception of the PHY header, and the PHY header includes the allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified.
說明書
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The present application is a continuation of U.S. application Ser. No. 15/741,618, filed Jan. 3, 2018, which is based on PCT filing PCT/JP2016/067444, filed Jun. 10, 2016, which claims priority to JP 2015-176846, filed Sep. 8, 2015, the entire contents of each are incorporated herein by reference.
The present disclosure relates to a wireless communication device and a wireless communication method.
In recent years, wireless local area networks (LANs) have spread with development of communication technologies. In addition, with the wireless LANs, products corresponding to the wireless LANs (hereinafter also referred to as wireless communication devices) have also increased. When wireless communication devices increase, there is a high possibility of communication efficiency deteriorating. Therefore, it is desirable to improve the communication efficiency.
One reason for deteriorating communication efficiency of wireless communication is collision of frames (packets). For example, when a plurality of wireless communication devices simultaneously transmit frames, frames collide. Thus, there is a low possibility of the frames being successfully received. As a result, the colliding frames are retransmitted, thereby deteriorating communication efficiency.
權(quán)利要求
The invention claimed is:1. A wireless communication device comprising:circuitry configured toreceive a physical layer (PHY) header from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which the wireless communication device belongs, and control transmission power on a basis of allowance signal information obtained in reception of the PHY header, wherein the PHY header includes the allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified. 2. The wireless communication device according to claim 1 , whereinthe PHY header includes an identifier of the first wireless communication network. 3. The wireless communication device according to claim 1 , whereinthe PHY header includes transmission power information in which transmission power of the first wireless communication device is specified. 4. The wireless communication device according to claim 1 , whereinthe allowance of the another signal for the signal reception includes a degree of interference by the another signal to be allowed or a degree of reception power of the another signal to be allowed. 5. The wireless communication device according to claim 1 , whereinthe circuitry is configured to decide the transmission power on a basis of an attenuation amount of radio waves related to a signal that the wireless communication device is to transmit, the attenuation amount is estimated on a basis of information obtained in the reception of the PHY header. 6. The wireless communication device according to claim 5 , whereinthe circuitry is configured to decide the transmission power on a basis of the allowance signal information and the attenuation amount. 7. The wireless communication device according to claim 5 , whereinthe attenuation amount is estimated on a basis of a distance between the wireless communication device and the first destination wireless communication device, and the distance is estimated on the basis of the information obtained in the reception of the PHY header. 8. The wireless communication device according to claim 7 , whereinthe distance includes a difference between a distance between the first wireless communication device and the first destination wireless communication device and a distance between the wireless communication device and the first wireless communication device. 9. The wireless communication device according to claim 7 , wherein,in a case in which a signal is not received from the first destination wireless communication device, the distance includes a distance between the first wireless communication device and the first destination wireless communication device. 10. The wireless communication device according to claim 7 , wherein,in a case in which a signal is received from the first destination wireless communication device, the distance includes the distance between the wireless communication device and the first destination wireless communication device which is estimated on a basis of reception of the signal from the first destination wireless communication device. 11. The wireless communication device according to claim 5 , whereinthe information obtained in the reception of the PHY header and used to control the transmission power includes at least one of modulation scheme information, transmission power information, and the allowance signal information included in the PHY header and reception signal strength in regard to the PHY header. 12. The wireless communication device according to claim 5 , wherein,in a case in which transmission power requested from a second destination wireless communication device which is a destination of a signal that the wireless communication device is to transmit is equal to or less than the transmission power decided by the circuitry, the circuitry transmits the signal with the requested transmission power. 13. The wireless communication device according to claim 12 , whereintransmission of the signal with the requested transmission power includes transmission of a signal during a transmission stop time set in reception of a signal from the first wireless communication device. 14. A wireless communication device comprising:circuitry configured to transmit a physical layer (PHY) header, the PHY header being used to control transmission power in a second wireless communication device belonging to a second wireless communication network different from a first wireless communication network to which the wireless communication device belongs, and include in the PHY header allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified. 15. A wireless communication method comprising:receiving, at a receiver, a physical layer (PHY) header from a first wireless communication device belonging to a first wireless communication network different from a second wireless communication network to which the receiver belongs; and controlling, with circuitry, transmission power on a basis of allowance signal information obtained in reception of the PHY header, wherein the PHY header includes the allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified. 16. A wireless communication method comprising:transmitting, at a transmitter, a physical layer (PHY) header, the PHY header being used to control transmission power in a second wireless communication device belonging to a second wireless communication network different from a first wireless communication network to which the transmitter belongs, and including, with circuitry, in the PHY header allowance signal information in which allowance of another signal for signal reception in a first destination wireless communication device which is a destination of a frame subsequent to the PHY header is specified.
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