Apparatus and method for transmitting data frame in WLAN terminal
AssigneeSamsung Electronics Co., Ltd.
InventorSang-Yeon Won
Life of this patent
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Abstract
A system and method for transmitting data in a wireless local area network (WLAN) are provided. The data transmission system in the WLAN includes: an access point for periodically transmitting beacon frame information; and a wireless terminal for determining the number of data frames depending on a transmission rate of a current data frame, producing a setting frame containing duration information determined depending on the number of data frames, transmitting the setting frame, and then consecutively transmitting as many data frames as the determined number during a duration time when it is determined that a communication environment is an overlapping legacy BSS condition (OLBC) environment based on the beacon frame information received from the access point.
Claims20
A data transmission system in a Wireless Local Area Network (WLAN), comprising:
- an access point for periodically transmitting beacon frame information;
- and
- a wireless terminal for determining the number of data frames depending on a transmission rate of a current data frame, producing a setting frame containing duration information determined depending on the number of data frames, transmitting the setting frame, and then consecutively transmitting as many data frames as the determined number during a duration time when it is determined that a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment based on the beacon frame information received from the access point.
A wireless terminal, comprising:
- a protection mode operation decider for deciding whether a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment including an 802.11b wireless terminal and an 802.11g wireless terminal to determine whether to operate in an 802.11g protection mode;
- a transmission rate determiner for determining a transmission rate of the current frame when the 802.11g protection mode is set;
- a frame number determiner for determining the number of data frames to be transmitted per setting frame containing duration information depending on the determined transmission rate, the number of data frames being equal to at least one;
- a CTS (clear to send) duration value determiner for determining a duration field value of the setting frame according to the determined number of data frames;
- and
- a frame transceiver for transmitting the setting frame and then consecutively transmitting as many data frames as the determined number according to the determined duration field value.
A data transmission system in a Wireless Local Area Network (WLAN), comprising:
- an access point for periodically transmitting beacon frame information;
- and
- a wireless terminal for producing a setting frame containing transmission time information depending on a transmission rate of a current data frame, transmitting the setting frame, and then consecutively transmitting at least one data frame during the transmission when it is determined that a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment based on the beacon frame information received from the access point.
A wireless terminal, comprising:
- a protection mode operation decider for deciding whether a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment including an 802.11b wireless terminal and an 802.11g wireless terminal to determine whether to operate in an 802.11g protection mode;
- a transmission rate determiner for determining the transmission rate of the current frame when the 802.11g protection mode is set;
- a duration value determiner for allocating a transmission time of a data frame depending on the determined transmission rate and determining the allocated time as a duration field value of the setting frame;
- and
- a frame transceiver for transmitting the setting frame and then consecutively transmitting at least one data frame according to the determined duration field value.
A data transmission method in a Wireless Local Area Network (WLAN), comprising steps of:
- periodically transmitting beacon frame information;
- and
- determining the number of data frames depending on a transmission rate of a current data frame, producing a setting frame containing duration information determined depending on the number of data frames, transmitting the setting frame, and then consecutively transmitting as many data frames as the determined number during a duration time when it is determined that a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment based on the transmitted beacon frame information.
A data transmission method in a Wireless Local Area Network (WLAN), comprising steps of:
- periodically transmitting beacon frame information;
- and
- producing a setting frame containing transmission time information depending on a transmission rate of a current data frame, transmitting the setting frame and then consecutively transmitting at least one data frame during the transmission when it is determined that a communication environment is an OLBC (overlapping legacy BSS (basic service set) condition) environment based on the transmitted beacon frame information.
Dependencies are inferred from the claim text.