Link setting method and device for multi-link transmission in wireless LAN communication system
The present invention relates to an operating method of a first communication node in a communication system, comprising the steps of: negotiating with a second communication node with respect to a parameter for multi-link transmission; determining, on the basis of the parameter, a plurality of links for performing the multi-link transmission, and the transmission method by which the multi-link transmission is performed; and transmitting, in the plurality of links, a data frame to the second communication node by means of the transmission method. Therefore, the communication node can efficiently set and change links.
1 . An operation method of a first device supporting multi-links in a communication system, the operation method comprising:
performing a monitoring operation for receiving a management frame using a first link which is a primary link among the multi-links;
receiving the management frame from a first access point (AP) affiliated with a second device through the monitoring operation;
identifying information of a second link supported by the second device among the multi-links from the management frame;
receiving a first frame including information of a fourth link which is a new primary link from the first AP; and
changing the primary link from the first link to the fourth link,
wherein the primary link is used for transmitting and receiving the management frame with the second device, and the information of the fourth link includes a link appliance timer field which indicates a time at which the primary link is changed to be the new primary link and a field indicating a bandwidth extension direction of the new primary link.
2 . The operation method according to claim 1 , wherein the management frame is a beacon frame or a probe response frame.
3 . The operation method according to claim 1 , wherein the information of the second link includes a target beacon transmission time (TBTT) information field for a second AP which is affiliated with the second device and operates in the second link.
4 . The operation method according to claim 1 , wherein the information of the second link includes an identifier of the second link.
5 . The operation method according to claim 1 , wherein the first link is a link in which an association procedure between the first device and the second device is performed.
6 . The operation method according to claim 1 , further comprising receiving information of a third link of a third AP affiliated with the second device from the second device after establishing the multi-links.
7 . The operation method according to claim 1 , wherein the management frame further includes information of a third link supported by the second device among the multi-links, and the information of the third link includes a TBTT information field for a third AP which is affiliated with the second device and operates in the third link and an identifier of the third link.
8 . An operation method of a second device supporting multi-links in a communication system, the operation method comprising:
generating a management frame including information of a second link supported by the second device among the multi-links;
transmitting the management frame using a first link which is a primary link among the multi-links;
configuring a fourth link as a new primary link; and
announcing a probe response frame including information of the fourth link to the first device,
wherein the primary link is used for transmitting and receiving the management frame with the first device, and the information of the fourth link includes a link appliance timer field which indicates a time at which the primary link is changed to be the new primary link and a field indicating a bandwidth extension direction of the new primary link.
9 . The operation method according to claim 8 , wherein the management frame is a beacon frame or the probe response frame.
10 . The operation method according to claim 8 , wherein the information of the second link includes a target beacon transmission time (TBTT) information field for a second AP which is affiliated with the second device and operates in the second link.
11 . The operation method according to claim 8 , wherein the information of the second link includes an identifier of the second link.
12 . The operation method according to claim 8 , wherein the first link is a link in which an association procedure between the first device and the second device is performed.
13 . The operation method according to claim 8 , wherein the management frame further includes information of a third link supported by the second device among the multi-links, and the information of the third link includes a TBTT information field for a third AP which is affiliated with the second device and operates in the third link and an identifier of the third link.
14 . The operation method according to claim 1 , further comprising establishing the multi-links including the first link and the second link with the second device.
15 . The operation method according to claim 8 , further comprising establishing the multi-links including the first link and the second link with a first device receiving the management frame.