Multiple access point (AP) association
This disclosure provides methods, components, devices and systems for multiple access point (AP) association with a single station (STA) to provide a seamless transition (e.g., little to no service interruption during an active link transfer). Some aspects more specifically relate to a multi-link entity (MLE) and multiple AP members of the MLE, and their communications with the STA.
1 . A multi-link entity (MLE) being associated with a plurality of access points (APs) including a first AP and a second AP configured for wireless communication, comprising:
at least one transceiver;
at least one memory comprising instructions; and
one or more processors configured to execute the instructions to cause the MLE to:
transmit, via the at least one transceiver, one or more communication parameters associated with each of the first AP and the second AP;
receive, via the at least one transceiver and a station (STA), a request to associate with the MLE and the first AP; and
establish, via the at least one transceiver:
an active link between the STA and the first AP, and
an inactive link between the STA and the second AP.
2 . The MLE of claim 1 , wherein the first AP is physically separated from the second AP.
3 . The MLE of claim 1 , wherein the one or more communication parameters are transmitted via information signaling comprising one or more of a reduced neighbor report (RNR) IE, a neighbor report IE, a multi-link IE, and a multi-AP IE.
4 . The MLE of claim 3 , wherein the information signaling is transmitted via a management frame, and wherein the management frame is one of a beacon frame, a probe response frame, association response, basic service set (BSS) transition management, and a link reconfiguration frame.
5 . The MLE of claim 1 , wherein the one or more communication parameters comprise at least one of: a bandwidth of one or more of the first AP and the second AP, a transmit power limitation of one or more of the first AP and the second AP, an operating channel of one or more of the first AP and the second AP, a link identifier of one or more of the first AP and the second AP, or an indication that the first AP and the second AP are physically separated members of the MLE.
6 . The MLE of claim 1 , wherein the one or more processors are further configured to cause the MLE to:
transmit, via the at least one transceiver and to the second AP, an indication of the establishment of the active link between the first AP and the STA, wherein the indication is configured to notify the second AP whether to refrain from establishing another active link with the STA.
7 . The MLE of claim 1 , wherein the one or more processors are further configured to cause the MLE to:
transmit, via the at least one transceiver and to the second AP, an indication of one or more operational parameters and metrics of the STA.
8 . The MLE of claim 7 , wherein the operational parameters and metrics include one or more of a primary channel used by the STA, communication capabilities of the STA, an operational status of the STA, an association status between the STA and the MLE, and at least one STA credential.
9 . The MLE of claim 1 , wherein the active link is a first active link, and wherein the one or more processors are further configured to cause the MLE to:
receive, via the at least one transceiver and from the STA, an indication that the inactive link is activated as a second active link, wherein the MLE is configured to simultaneously maintain the first active link and the second active link until an indication to terminate the first active link is received, via the at least one transceiver, from the STA or the second AP.
10 . The MLE of claim 1 , wherein the first AP comprises the at least one transceiver, the at least one memory, and the one or more processors.
11 . A first access point (AP), comprising:
at least one transceiver;
at least one memory comprising instructions; and
one or more processors configured to execute the instructions and cause the first access point to:
transmit, via the at least one transceiver, one or more communication parameters associated with each of the first access point and a second AP, wherein both of the first access point and the second AP are members of a first multi-link entity (MLE);
receive, via the at least one transceiver and from a station (STA), a request to associate with the MLE and the first access point; and
establish, via the at least one transceiver, an active link between the STA and the first access point.
12 . The first access point of claim 11 , wherein the one or more communication parameters comprise at least one of: a bandwidth of the first access point and the second AP, a transmit power limitation of the first access point and the second AP, an operating channel of the first access point and the second AP, a link identifier of the first access point and the second AP, or an indication that the first access point and the second AP are physically separated members of the MLE.
13 . The first access point of claim 12 , wherein the one or more communication parameters are transmitted via information signaling comprising one or more of a reduced neighbor report (RNR) information element (IE), a neighbor report IE, a multi-link IE, and a multi-AP IE.
14 . The first access point of claim 13 , wherein the information signaling is transmitted via a management frame, and wherein the management frame is one of a beacon frame, a probe response frame, an association response frame, a basic service set (BSS) transition management frame, and a link reconfiguration frame.
15 . The first access point of claim 11 , wherein the active link is a first active link, and wherein the one or more processors are further configured to cause the first access point to:
receive, from the STA or the second AP, an indication that an inactive link between the STA and the second AP has activated as a second active link, wherein the first access point is configured to maintain the first active link until an indication to terminate the first active link is received, via the at least one transceiver, from the STA or the second AP.
16 . The first access point of claim 11 , wherein the one or more processors are further configured to cause the first access point to:
transmit, via the at least one transceiver and to the second AP, an indication of the established active link between the first access point and the STA, wherein the indication is configured to notify the second AP to refrain from establishing another active link with the STA.
17 . The first access point of claim 11 , wherein the one or more processors are further configured to cause the first access point to:
transmit, via the at least one transceiver and to the second AP, an indication of one or more operational parameters and metrics of the STA.
18 . The first access point of claim 17 , wherein the STA operational parameters and metrics include one or more of a primary channel used by the STA, communication capabilities of the STA, an operational status of the STA, an association status between the STA and the first access point, and at least one STA credential.
19 . A station, comprising:
at least one transceiver;
at least one memory comprising instructions; and
one or more processors configured to execute the instructions to cause the station to:
receive, via the at least one transceiver and from a first access point (AP) of a multi-link entity (MLE), one or more communication parameters associated with each of the first AP and a second AP of the MLE;
transmit, via the at least one transceiver and to the first AP, a request to associate with the first AP and the MLE; and
establish, via the at least one transceiver:
an active link between the station and the first AP, and
an inactive link between the station and the second AP.
20 . The station of claim 19 , wherein the one or more communication parameters comprise at least one of: a bandwidth of the first AP and the second AP, a transmit power limitation of the first AP and the second AP, an operating channel of the first AP and the second AP, a link identifier of the first AP and the second AP, or an indication that the first AP and the second AP are physically separated members of the MLE.
21 . The station of claim 19 , wherein the one or more communication parameters are received via information signaling comprising one or more of a reduced neighbor report (RNR) information element (IE), a neighbor report IE, a multi-link IE, and a multi-AP IE.
22 . The station of claim 21 , wherein the information signaling is received via a management frame, and wherein the management frame is one of a beacon frame, a probe response frame, an association response frame, a basic service set (BSS) transition management frame, and a link reconfiguration frame.
23 . The station of claim 19 , wherein the active link is a first active link, and wherein the one or more processors are further configured to cause the station to:
transmit, via the at least one transceiver and to the second AP, a request to activate the inactive link as a second active link, wherein the station is configured to simultaneously maintain the first active link and the second active.
24 . The station of claim 23 , wherein the one or more processors are further configured to cause the station to:
transmit, via the at least one transceiver and to the first AP, an indication to terminate the first active link.
25 . The station of claim 19 , wherein the one or more processors are further configured to cause the station to:
transmit, via the at least one transceiver and to the second AP, an indication of the established active link between the station and the first AP, wherein the indication is configured to notify the second AP to refrain from establishing another active link with the station.
26 . The station of claim 19 , wherein the one or more processors are further configured to cause the station to:
transmit, via the at least one transceiver and to the first AP, an indication of one or more STA operational metrics.
27 . The station of claim 26 , wherein the STA operational metrics include one or more of a primary channel used by the station, communication capabilities of the station, an operational status of the station, an association status between the station and the MLE, and at least one credential of the station.