Abstract: A method and a device are disclosed for low latency communication in a communication system supporting multiple links. An operating method of a first device comprises the steps of: receiving a first initial control frame from a second device on a first link from among multiple links; performing a frame transmission/reception procedure with the second device on the first link on which the first initial control frame is received; and operating in a listening mode on one or more links from among the multiple links if the frame transmission/reception procedure is completed.

Abstract: A method and a device for direct communication in a communication system supporting multiple links are disclosed. A method of an AP MLD comprises the steps of: transmitting a trigger frame in multiple links including a first link and a second link; receiving a response frame for the trigger frame from a first STA associated with an STA MLD in the first link; receiving a first data frame from a third STA in the second link; and when a subject to receive the first data frame is a second STA associated with the STA MLD, transmitting a second data frame generated on the basis of the first data frame, to the first STA in the first link.

Abstract: A method and a device are disclosed for a non-simultaneous transmit and receive (NSTR) operation in a communication system supporting multiple links. An operating method of a device comprises the steps of: receiving, from an AP, a first frame including configuration information about a TWT SP in a first link from among multiple links; transmitting, to an STA, a second frame including configuration information about a QTP overlapping with the TWT SP in a second link from among the multiple links; and communicating with the AP within the TWT SP configured in the first link.

Abstract: Disclosed are a method and device for transmitting synchronization information for a NSTR operation in a communication system supporting multi-links. A method of an AP MLD includes the steps of: transmitting a first trigger frame over a first link; transmitting a second trigger frame over a second link; receiving, over the first link, a first data frame triggered by the first trigger frame; receiving, over the second link, a second data frame triggered by the second trigger frame; generating a first reception response frame and a second reception response frame having the same lengths; transmitting the first reception response frame over the first link, as a response to the first data frame; and transmitting the second reception response frame over the second link, as a response to the second data frame.

Abstract: A method and a device for receiving downlink traffic in a communication system supporting multiple links are disclosed. An operation method of a first device includes the steps of: transmitting a traffic indication map (TIM) through a first link from among multiple links; transmitting, through the first link, first information for indicating one or more links through which a data unit stored in the first device is transmitted; and using the one or more links indicated by the first information, so as to transmit the data unit to a second device indicated by the TIM.