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Wireless communication device and wireless communication method

專利號
US10791526B2
公開日期
2020-09-29
申請人
Sony Corporation（JP Tokyo）
發(fā)明人
Masahito Mori; Yuichi Morioka
IPC分類
H04W52/38; H04W52/00; H04W52/24; H04W52/26; H04W52/34; H04W84/12
技術(shù)領(lǐng)域
sta,ap,allowance,wireless,phy,header,signal,power,bss,in
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

For example, as illustrated in FIG. 1, the wireless communication system includes AP 100 #1 and STA 200 #1. AP 100 #1 and STA 200 #1 are connected to each other to form a wireless communication network in a unit called a basic service set (BSS) #1. In addition, although not illustrated in FIG. 1 for simplicity, a plurality of STAs 200 #1 are connected to AP 100 #1 in some cases. In this case, while a certain STA 200 #1 is executing transmission to AP 100 #1, another STA 200 #1 stops transmission of the self-device during an NAV period. Then, after the transmission of the certain STA 200 #1 ends, the other STA 200 #1 starts the transmission.

Here, in a case in which a plurality of APs are installed, communication ranges of the APs overlap each other. For example, as illustrated in FIG. 1, a communication range of AP 100 #1, that is, a range of BSS #1 which may be connected to AP 100 #1, overlaps a communication range of AP 100 #2, that is, a range of BSS #2. Such an environment is called an overlapping BSS (OBSS) environment.

In the OBSS environment, there is a possibility of a signal transmitted by an STA being received by an AP of another BSS different from the BSS to which the STA belongs. Therefore, when a signal is received from another STA, the STA stops transmission of the self-device because a transmission period of the signal is an NAV period despite the fact that the other STA is an STA of the other BSS. As a result, transmission opportunities of an STA under the OBSS environment decrease, and thus use efficiency of communication resources may deteriorate.

權(quán)利要求

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