Reception of management frames for multiple basic services sets (BSSs)

Patent metadata

Field	Value
Publication number	US-11856536-B2
Application number	US-202217814470-A
Country	US
Kind code	B2
Filing date	Jul 22, 2022
Priority date	Jul 9, 2018
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

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:
one or more memories storing processor-executable code; and
one or more processors coupled to the one or more memories and, when executing the code, 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);
determine 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;
identify a first indicator element in at least 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 whether a second portion of the BSS profile is included in a second Multiple BSSID element of the first management frame based, at least in part, on whether the second Multiple BSSID element includes an indicator element; and
determine whether the BSS profile is split between the first Multiple BSSID element of the first management frame and the second Multiple BSSID element of the first management frame based, at least in part, on the first Multiple BSSID element including the first indicator element and whether the second Multiple BSSID element includes the indicator element.

2. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are further configured to:
determine to skip processing one or more Multiple BSSID elements of a second management frame based, at least in part, on a determination that the one or more Multiple BSSID elements of the second management frame do not include the BSS profile of the BSS associated with the wireless node.

3. The wireless node of claim 1 , in response to a determination that the first management frame includes the BSS profile of the BSS associated with the wireless node, the one or more processors, when executing the code, are 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 1 , wherein, to determine the first management frame includes the BSS profile of the BSS associated with the wireless node, the one or more processors, when executing the code, are further 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.

5. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are 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.

6. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are 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.

7. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are 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.

8. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are further configured to wake up a host processor to further process the first management frame.

9. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are further configured to:
determine the first Multiple BSSID element includes the first indicator element that indicates the BSS profile is split between the first Multiple BSSID element and the second Multiple BSSID element.

10. The wireless node of claim 1 , wherein the one or more processors, when executing the code, are 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.

11. The wireless node of claim 1 , wherein, to determine whether the second portion of the BSS profile is included in the second Multiple BSSID element, the one or more processors, when executing the code, are further configured to:
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, wherein the BSS profile is not split between the first Multiple BSSID element and the second Multiple BSSID element based, at least in part, on the second Multiple BSSID element including the second indicator element.

12. A wireless node, comprising:
one or more memories storing processor-executable code; and
one or more processors coupled to the one or more memories and, when executing the code, 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 including a first management frame;
split a first BSS profile of the plurality of BSS profiles between a first Multiple BSSID element of the first management frame and a second Multiple BSSID element of the first management frame, wherein the first Multiple BSSID element includes a first portion of the first BSS profile and the second Multiple BSSID element includes a second portion of the first BSS profile, and wherein the first portion of the first BSS profile includes a first indicator element that indicates a start of the first BSS profile and the second portion of the first BSS profile does not include an indicator element;
generate the one or more management frames including the first management frame; and
output the one or more management frames including the first management frame for transmission to

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

• H04W56/0005 Primary

  synchronizing of arrival of multiple uplinks · CPC title

• H04L5/0096

  Indication of changes in allocation · CPC title

• H04W56/0015

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

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W88/08

  Access point devices · CPC title