Communication method in wireless local area network system
First Claim
1. A method for communicating in a Wireless Local Area Network (WLAN) system, the method comprising:
- receiving, by a relay station (STA) from an Access Point (AP), a first beacon frame including a first traffic indication map (TIM) element;
generating, by the relay STA, a second beacon frame by including a part of the first TIM element, which is allocated for a receiving STA; and
transmitting, by the relay STA, the second beacon frame to the receiving STA after receiving the first beacon frame,wherein the second beacon frame includes a second TIM element generated based on the first TIM element,wherein the first TIM element includes a first bitmap indicating whether buffered data for at least one STA associated with the AP is present or not, andwherein the second TIM element includes a second bitmap indicating whether buffered data for the receiving STA is present or not,wherein the method further comprises;
receiving, by the relay STA, a TIM request frame from the receiving STA; and
configuring, by the relay STA, a network with the receiving STA by transmitting a TIM relay response frame as a response to the TIM request frame,wherein the TIM relay request frame includes information on an identifier of the AP,wherein the TIM relay response frame includes information on an identifier of the relay STA, andwherein the relay STA is capable of being supplied by power.
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Abstract
A communication method performed by a target station in a WLAN system is provided. The method includes receiving a relayed TIM message from a relay station, the TIM message comprising a relayed TIM field indicating whether there is buffered traffic intended to be transmitted from an AP to the target station, determining whether there is the buffered traffic based on the relayed TIM field, receiving a data frame related to the buffered traffic, if the relayed TIM field indicates that there is the buffered traffic, and switching to a doze state, if the relayed TIM field indicates that there is no buffered traffic. The relayed TIM field is determined based on a TIM element transmitted from the AP to the relay station. The TIM element is transmitted in a first period, and the relayed TIM message is transmitted in a second period.
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Citations
12 Claims
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1. A method for communicating in a Wireless Local Area Network (WLAN) system, the method comprising:
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receiving, by a relay station (STA) from an Access Point (AP), a first beacon frame including a first traffic indication map (TIM) element; generating, by the relay STA, a second beacon frame by including a part of the first TIM element, which is allocated for a receiving STA; and transmitting, by the relay STA, the second beacon frame to the receiving STA after receiving the first beacon frame, wherein the second beacon frame includes a second TIM element generated based on the first TIM element, wherein the first TIM element includes a first bitmap indicating whether buffered data for at least one STA associated with the AP is present or not, and wherein the second TIM element includes a second bitmap indicating whether buffered data for the receiving STA is present or not, wherein the method further comprises; receiving, by the relay STA, a TIM request frame from the receiving STA; and configuring, by the relay STA, a network with the receiving STA by transmitting a TIM relay response frame as a response to the TIM request frame, wherein the TIM relay request frame includes information on an identifier of the AP, wherein the TIM relay response frame includes information on an identifier of the relay STA, and wherein the relay STA is capable of being supplied by power. - View Dependent Claims (2, 4, 5, 6, 7)
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3. A relay station (STA) for communicating in a Wireless Local Area Network (WLAN) system, the relay STA comprising:
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a transceiver configured to transmit and receive radio signals; and a processor operatively connected to the transceiver and configured to; receive, from an Access Point (AP), a first beacon frame including a first traffic indication map (TIM) element; generate a second beacon frame by including a part of the first TIM element, which is allocated for a receiving STA; and transmit the second beacon frame to the receiving STA after receiving the first beacon frame; wherein the second beacon frame includes a second TIM element generated based on the first TIM element, wherein the first TIM element includes a first bitmap indicating whether buffered data for at least one STA associated with the AP is present or not, and wherein the second TIM element includes a second bitmap indicating whether buffered data for the receiving STA is present or not, wherein the processor is further configured to; receive a TIM request frame from the receiving STA, and configure a network with the receiving STA by transmitting a TIM relay response frame as a response to the TIM request frame, wherein the TIM relay request frame includes information on an identifier of the AP, wherein the TIM relay response frame includes information on an identifier of the relay STA, and wherein the relay STA is capable of being supplied by power. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification