RECEPTION OF MANAGEMENT FRAMES FOR MULTIPLE BASIC SERVICES SETS (BSSs)

Patent metadata

Field	Value
Publication number	US-2023009359-A1
Application number	US-202217814470-A
Country	US
Kind code	A1
Filing date	Jul 22, 2022
Priority date	Jul 9, 2018
Publication date	Jan 12, 2023
Grant date	—

Abstract

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for analyzing management frames for multiple basic service sets (BSSs). In one aspect, a wireless node may obtain a first management frame from a wireless local area network (WLAN) apparatus, the WLAN apparatus operating multiple virtual access points (VAPs) respectively corresponding to multiple BSSs. The wireless node may determine whether the first management frame includes a BSS profile of a BSS associated with the wireless node based, at least in part, on an arrangement of a plurality of BSS profiles within one or more management frames. The wireless node may determine to further process the first management frame based, at least in part, on a determination that the first management frame includes the BSS profile of the BSS associated with the wireless node.

First claim

What is claimed is:

1 . A wireless node, comprising:
an interface configured to obtain a first management frame from a wireless local area network (WLAN) apparatus, the WLAN apparatus operating multiple virtual access points (VAPs) respectively corresponding to multiple basic service sets (BSSs); and a first processor configured to:
determine whether the first management frame includes a BSS profile of a BSS associated with the wireless node based, at least in part, on an arrangement of a plurality of BSS profiles within one or more management frames transmitted by the WLAN apparatus, the BSS being one of the multiple BSSs and the BSS profile being one of the plurality of BSS profiles, and
determine to further process the first management frame based, at least in part, on a determination that the first management frame includes the BSS profile of the BSS associated with the wireless node.

2 . The wireless node of claim 1 , wherein the first processor is further configured to:
determine to discard the first management frame without further processing the first management frame based, at least in part, on a determination that the first management frame does not include the BSS profile of the BSS associated with the wireless node.

3 . The wireless node of claim 1 , in response to the determination that the first management frame includes the BSS profile of the BSS associated with the wireless node, the first processor is further configured to:
determine whether the BSS profile of the BSS has changed compared to a previous instance of the BSS profile that was included in a previously received management frame, and determine to further process the first management frame in response to a determination that the BSS profile has changed compared to the previous instance of the BSS profile.

4 . The wireless node of claim 3 , wherein the first processor is further configured to:
determine to discard the first management frame without further processing the first management frame in response to a determination that the BSS profile has not changed compared to the previous instance of the BSS profile.

5 . The wireless node of claim 1 , wherein the first processor configured to determine whether the first management frame includes the BSS profile of the BSS associated with the wireless node based, at least in part, on the arrangement of the plurality of BSS profiles within one or more management frames transmitted by the WLAN apparatus further comprises the first processor configured to:
determine the first management frame includes the BSS profile of the BSS based, at least in part, on a repeating pattern of the plurality of BSS profiles included across a repeating sequence of management frames transmitted by the WLAN apparatus.

6 . The wireless node of claim 1 , wherein the first processor is further configured to:
monitor management frames transmitted by the WLAN apparatus; determine a repeating pattern of the plurality of BSS profiles included across a repeating sequence of the management frames transmitted by the WLAN apparatus based on the monitoring of the management frames; and determine the first management frame includes the BSS profile of the BSS based, at least in part, on the repeating pattern of the plurality of BSS profiles included across the repeating sequence of the management frames.

7 . The wireless node of claim 1 , wherein the first processor is further configured to:
determine the first management frame includes the BSS profile of the BSS based, at least in part, on a determination that the first management frame is a Delivery Traffic Indication Message (DTIM) management frame.

8 . The wireless node of claim 1 , wherein the first processor is further configured to:
determine a DTIM interval associated with the BSS profile of the BSS associated with the wireless node; determine a repeating pattern of transmission of management frames that include the BSS profile of the BSS based, at least in part, on the DTIM interval; and determine the first management frame includes the BSS profile of the BSS based, at least in part, on a determination that the first management frame is one of the management frames in the repeating pattern of transmission of management frames that include the BSS profile of the BSS.

9 . The wireless node of claim 1 , wherein the first processor configured to determine to further process the first management frame further comprises the first processor configured to wake up a host processor to further process the first management frame.

10 . The wireless node of claim 1 , in response to the determination that the first management frame includes the BSS profile of the BSS associated with the wireless node, the first processor is further configured to:
determine whether the BSS profile is split between a first Multiple BSSID element of the first management frame and a second Multiple BSSID element of the first management frame.

11 . The wireless node of claim 10 , wherein the first processor is further configured to:
determine the first Multiple BSSID element or the second Multiple BSSID element includes an indicator element that indicates the BSS profile is split between the first Multiple BSSID element and the second Multiple BSSID element.

12 . The wireless node of claim 10 , wherein the first processor is further configured to:
determine the first management frame includes at least a subset of the plurality of BSS profiles based, at least in part, on the arrangement of the plurality of BSS profiles within one or more management frames transmitted by the WLAN apparatus, the subset of the plurality of BSS profiles including the BSS profile.

13 . The wireless node of claim 1 , in response to the determination that the first management frame includes the BSS profile of the BSS associated with the wireless node, the first processor is further configured to:
identify a first indicator element in a first portion of the BSS profile included in a first Multiple BSSID element of the first management frame, the first indicator element indicating a start of the BSS profile; determine a second portion of the BSS profile included in a second Multiple BSSID element of the first management frame does not include an indicator element; identify a second indicator element in a next BSS profile included in the second Multiple BSSID element, the second indicator element indicating a start of the next BSS profile; and determine the BSS profile is split between the first Multiple BSSID element and the second Multiple BSSID element based, at least in part, on an identification of the first indicator element, an identification of the second indicator element, and a determination that the second portion of the BSS profile included in the second Multiple BSSID element does not include an indicator element.

14 . A wireless node, comprising:
a processor configured to:
operate multiple virtual access points (VAPs) associated with corresponding multiple basis service sets (BSSs), the multiple VAPs including at least a first VAP for a first BSS and a plurality of other VAPs for a plurality of other BSSs;
determine an arrangement of a plurality of BSS profiles associated with the plurality of other BSSs within one or more management frames; and
generate the one or more management frames based, at least in part, on the arrangement of the plurality of BSS profiles; and
an interface configured to output the one or more management frames for transmission to one or more wireless local area network (WLAN) apparatuses associated with the first BSS and at least one of the plurality of ot

Assignees

• Qualcomm Inc

Inventors

• Patil Abhishek Pramod
• Xiao Yongchun
• Gidvani Ravi
• Homchaudhuri Sandip
• Yenganti Pradeep Kumar
• Emmanuel Arul Davidson
• Cho James Simon
• Karthic Padmanabhan Venkataraman
• Cherian George
• Asterjadhi Alfred
• Malinen Jouni Kalevi

Classifications

• H04W56/0015

  one node acting as a reference for the others · CPC title

• H04W56/0005 Primary

  synchronizing of arrival of multiple uplinks · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04L5/0096

  Indication of changes in allocation · CPC title

• H04W88/08

  Access point devices · CPC title