# US 11,910,300 B2 · Communication method and apparatus

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- Number: US 11,910,300 B2
- Document ID: US11910300B2
- Status: Granted
- Kind: B2
- Application number: 17/586,395
- Filed: 2022-01-27
- Published: 2022-05-12
- Granted: 2024-02-20
- Earliest claimed: 2018-11-15
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Ming Gan; Dandan Liang
- Web page: https://patentgrep.com/patent/US11910300B2

## CPC

- H04W 48/16: Discovering, processing access restriction or access information
- H04B 17/364: Delay profiles
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 8/005: {Discovery of network devices, e.g. terminals}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00)
- H04W 48/10: using broadcasted information
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 72/20: Control channels or signalling for resource management
- H04W 76/11: Allocation or use of connection identifiers
- H04W 48/12: using downlink control channel
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 88/08: Access point devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

The application provides an information indication method, including generating a first frame, where the first frame includes address information of a station operating on a frequency band of 6 GHz; and transmitting the first frame on a 2.4 GHz and/or 5 GHz frequency band.

## Claims

### Claim 1

A communication method in a wireless local area network, the method comprising:
receiving, by a first STA, a probe request frame, wherein the first STA and a second STA are in a multiple basic service set identifier BSSID set; and
in response to a receiving address field (RA field) of the probe request frame including an individual address that is a media access control (MAC) address of the second STA, determining, by the first STA, that the first STA is allowed to respond to the probe request frame based on that the first STA and the second STA are in the multiple BSSID set.

### Claim 2 (depends on 1)

The method according to the claim 1, wherein the first STA is a first access point (AP), and the second STA is a second AP.

### Claim 3 (depends on 2)

The method according to the claim 2, wherein the first AP is the AP of a transmitted BSSID in the multiple BSSID set, the second STA is an AP of a non-transmitted BSSID in the multiple BSSID set.

### Claim 4 (depends on 1)

The method according to the claim 1, wherein the probe response frame comprises whole profile of access points (APs) in the multiple BSSID set.

### Claim 5 (depends on 1)

The method according to the claim 1, further comprising:
determining, by the first STA, that the first STA is allowed to respond to the probe request frame in response to a condition for shall-not-respond not being met;
wherein, for the first STA that receives the probe request frame, the condition shall-not-respond comprises any of the following conditions a), c), d), e), f), g), h), i), j), or k):
a) the first STA does not match any of the following criteria:
1) the first STA is an AP,
2) the first STA is an independent basic service set (IBSS) STA,
3) the first STA is a mesh STA,
4) the first STA is a directional multi-gigabit (DMG) STA that is not a member of a personal basic service set (PBSS) and that is performing active scan, or
5) the first STA is a personal basic service set (PBSS) control point (PCP);
c) the first STA is a non-AP STA in an infrastructure basic service set (BSS) and the Address 1 field of the probe request frame contains the broadcast address,
d) the first STA is a non-PCP STA in a PBSS and the Address 1 field of the probe request frame contains the broadcast address,
e) the first STA is in an IBSS and did not transmit a Beacon or DMG Beacon frame since the last target beacon transmission time (TBTT), and the Address 1 field of the probe request frame contains the broadcast address,
f) the first STA is a mesh STA and either of the following criteria are met:
1) the probe request frame does not contain a Mesh ID element,
2) the Mesh ID element in the probe request frame is present but does not contain the wildcard Mesh ID and does not match the Mesh ID of the mesh basic service set (MBSS) with which the first STA is peered;
g) the first STA is not a mesh STA and none of the following criteria are met:
1) the SSID in the probe request frame is the wildcard SSID,
2) the SSID in the probe request frame matches the SSID of the first STA's,
3) the SSID List element is present in the probe request frame and includes the SSID of the first STA's BSS,
h) the first STA is not a mesh STA and the Address 3 field of the probe request frame does not contain a wildcard BSSID and does not match the BSSID of the first STA's BSS,
i) the first STA has dot11InterworkingServiceActivated equal to true and the probe request frame contains an Interworking element and an Extended Capabilities element whose Interworking field contains the value 1, and at least one of the following criteria is not met:
1) the HESSID field of the Interworking element is absent, or is present and contains the wildcard HESSID or matches the HESSID field of the InterworkingInfo parameter of the last MLME-START.request or MLME-JOIN.request primitive,
2) the Access Network Type field of the Interworking element contains the wildcard access network type or matches the access network type of the first STA,
j) the probe request frame contains a direct sequence spread spectrum (DSSS) Parameter Set element in which the Current Channel field contains a value that is not the same as dot11CurrentChannel, or
k) the first STA is a DMG STA and the transmit antenna of the DMG STA is not trained to transmit to the first STA from which the probe request frame was received.

### Claim 6

A communication apparatus in a wireless local area network, comprising at least a processor and a memory, the memory stores code and is controlled by the processor to execute the following:
receiving, as a first station (STA), a probe request frame, wherein the first STA and a second STA are in a multiple basic service set identifier (BSSID) set; and
in response to a receiving address field (RA field) of the probe request frame including an individual address that is a media access control (MAC) address of the second STA, determining, as the first STA, that the first STA is allowed to respond to the probe request frame based on that the first STA and the second STA are in the multiple BSSID set.

### Claim 7 (depends on 6)

The apparatus according to the claim 6, wherein the first STA is a first access point (AP), and the second STA is a second AP.

### Claim 8 (depends on 7)

The apparatus according to the claim 7, wherein the first AP is the AP of a transmitted BSSID in the multiple BSSID set, the second STA is an AP of a non-transmitted BSSID in the multiple BSSID set.

### Claim 9 (depends on 6)

The apparatus according to the claim 6, wherein the probe response frame comprises whole profile of access points (APs) in the multiple BSSID set.

### Claim 10 (depends on 6)

The apparatus according to the claim 6, wherein the memory stores code and is controlled by the processor to further execute the following:
determining, as the first STA, that the first STA is allowed to respond to the probe request frame in response to a condition for shall-not-respond not being met;
wherein, for the first STA that receives the probe request frame, the condition for shall-not-respond comprises any of the following conditions a), c), d), e), f), g), h), i), j), or k):
a) the first STA does not match any of the following criteria:
1) the first STA is an AP,
2) the first STA is an independent basic service set (IBSS) STA,
3) the first STA is a mesh STA,
4) the first STA is a directional multi-gigabit (DMG) STA that is not a member of a personal basic service set (PBSS) and that is performing active scan, or,
5) the first STA is a personal basic service set (PBSS) control point (PCP);
c) the first STA is a non-AP STA in an infrastructure basic service set (BSS) and the Address 1 field of the probe request frame contains the broadcast address,
d) the first STA is a non-PCP STA in a PBSS and the Address 1 field of the probe request frame contains the broadcast address,
e) the first STA is in an IBSS and did not transmit a Beacon or DMG Beacon frame since the last target beacon transmission time (TBTT), and the Address 1 field of the probe request frame contains the broadcast address,
f) the first STA is a mesh STA and either of the following criteria are met:
1) the probe request frame does not contain a Mesh ID element,
2) the Mesh ID element in the probe request frame is present but does not contain the wildcard Mesh ID and does not match the Mesh ID of the mesh basic service set (MBSS) with which the first STA is peered;
g) the first STA is not a mesh STA and none of the following criteria are met:
1) the SSID in the probe request frame is the wildcard SSID,
2) the SSID in the probe request frame matches the SSID of the first STA's,
3) the SSID List element is present in the probe request frame and includes the SSID of the first STA's BSS,
h) the first STA is not a mesh STA and the Address 3 field of the probe request frame does not contain a wildcard BSSID and does not match the BSSID of the first STA's BSS,
i) the first STA has dot11InterworkingServiceActivated equal to true and the probe request frame contains an Interworking element and an Extended Capabilities element whose Interworking field contains the value 1, and at least one of the following criteria is not met:
1) the HESSID field of the Interworking element is absent, or is present and contains the wildcard HESSID or matches the HESSID field of the InterworkingInfo parameter of the last MLME-START.request or MLME-JOIN.request primitive,
2) the Access Network Type field of the Interworking element contains the wildcard access network type or matches the access network type of the first STA,
j) the probe request frame contains a direct sequence spread spectrum (DSSS) Parameter Set element in which the Current Channel field contains a value that is not the same as dot11CurrentChannel, or
k) the first STA is a DMG STA and the transmit antenna of the DMG STA is not trained to transmit to the first STA from which the probe request frame was received.