| CPC H04W 76/15 (2018.02) [H04W 56/001 (2013.01)] | 18 Claims |

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1. A method, comprising:
sending, by a first station comprised in a station multi-link device (STA MLD) to a first access point comprised in an access point multi-link device (AP MLD), an information frame on a first link corresponding to the first station, wherein the information frame indicates a second station that is to send an uplink service and that loses channel state information, and wherein the second station is further comprised in the STA MLD;
receiving, by the second station from a second access point further comprised in the AP MLD, a downlink message frame on a second link corresponding to the second station, wherein the downlink message frame is configured to assist the second station in sending the uplink service; and
sending, by the second station to the second access point, the uplink service on the second link.
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