Wireless local area network (WLAN) and method of transmitting frame in the WLAN
First Claim
1. A method of transmitting a frame in a Wireless Local Area Network (WLAN), the method comprising:
- collecting mode information and an available data transfer rate of each wireless terminal located within a coverage of the Access Point (AP);
determining whether or not the AP transmits a Clear To Send (CTS) frame depending upon an existence of wireless terminals corresponding to the collected mode information before the AP transmits a data frame to at least one wireless terminal among all of the wireless terminals located within a coverage of the AP; and
adjusting a data transfer rate of the CTS frame based on the collected available data transfer rate of each of the wireless terminals to transmit the CTS frame at the adjusted data transfer rate.
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Accused Products
Abstract
In a Wireless Local Area Network (WLAN) and a method of transmitting a frame in the WLAN, mode information and an available data transfer rate of each wireless terminal located within a coverage of an Access Point (AP) are collected. A determination is made as to whether or not the AP transmits a Clear To Send (CTS) frame depending upon an existence of wireless terminals corresponding to the collected mode information before the AP transmits a data frame to at least one wireless terminal. A data transfer rate of the CTS frame is adjusted based on the collected available data transfer rate of each of the wireless terminals to transmit the CTS frame at the adjusted data transfer rate. Therefore, both the stability and the bandwidth effectiveness may be enhanced.
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Citations
20 Claims
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1. A method of transmitting a frame in a Wireless Local Area Network (WLAN), the method comprising:
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collecting mode information and an available data transfer rate of each wireless terminal located within a coverage of the Access Point (AP); determining whether or not the AP transmits a Clear To Send (CTS) frame depending upon an existence of wireless terminals corresponding to the collected mode information before the AP transmits a data frame to at least one wireless terminal among all of the wireless terminals located within a coverage of the AP; and adjusting a data transfer rate of the CTS frame based on the collected available data transfer rate of each of the wireless terminals to transmit the CTS frame at the adjusted data transfer rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of transmitting a frame in an Access Point (AP) of a Wireless Local Area Network (WLAN), the method comprising:
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collecting mode information representing one of IEEE 802.11b and IEEE 802.11g and an available data transfer rate of each wireless terminal located within a coverage of the AP; transmitting a Clear To Send (CTS) frame at a minimum data transfer rate of available data transfer rates of at least one first wireless terminal conforming to IEEE 802.11b before sending a data frame when both the at least one first wireless terminal conforming to IEEE 802.11b and at least one second wireless terminal conforming to IEEE 802.11g are located within the coverage of the AP. - View Dependent Claims (11)
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12. A Wireless Local Area Network (WLAN), comprising:
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an Access Point (AP) adapted to collect mode information and an available data transfer rate of each wireless terminal located within a coverage of the AP, to determine whether or not the AP transmits a Clear To Send (CTS) frame depending upon an existence of wireless terminals corresponding to the collected mode information before the AP transmits a data frame, and to adjust a data transfer rate of the CTS frame based on the collected available data transfer rate of each of the wireless terminals to transmit the CTS frame at the adjusted data transfer rate; and at least one wireless terminal adapted to receive the CTS frame from the AP to cease a data transmission of the at least one wireless terminal during an interval corresponding to a transmission cease time included in a duration field of the CTS frame. - View Dependent Claims (13, 14, 15, 16)
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17. An Access Point (AP) conforming to both IEEE 802.11b and IEEE 802.11b, the AP comprising:
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a storage unit adapted to store information about all wireless terminals located within a coverage of the AP; a controller adapted to collect mode information of each of the wireless terminals, and to determine a data transfer rate of a Clear To Send (CTS) frame, the determined data transfer rate of the CTS frame corresponding to a minimum data transfer rate of available data transfer rates of at least one first wireless terminal conforming to IEEE 802.11b when both the at least one first wireless terminal conforming to IEEE 802.11b and at least one second wireless terminal conforming to IEEE 802.11g are located within the coverage of the AP; and a frame generator adapted to generate the CTS frame based on the determined data transfer rate of the CTS frame. - View Dependent Claims (18, 19, 20)
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Specification