# US 2021/0345418 A1 · Random access resource unit allocation for a multiple bssid network

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- Number: US 2021/0345418 A1
- Document ID: US20210345418A1
- Status: Published application
- Kind: A1
- Application number: 17/375,925
- Filed: 2021-07-14
- Published: 2021-11-04
- Earliest claimed: 2016-04-14
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Alfred Asterjadhi; James Simon Cho; George Cherian; Simone Merlin; Abhishek Pramod Patil
- Web page: https://patentgrep.com/patent/US20210345418A1

## CPC

- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 74/006: {in the downlink, i.e. towards the terminal}
- H04L 69/323: in the physical layer [OSI layer 1]
- 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)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

An access point (AP) may prioritize the allocation of uplink resources between multiple basic service sets (BSSs). In some aspects, the AP may select one of a plurality of BSSs, may allocate one or more random-access resource units (RUs) to only the selected BSS, and may transmit, for each of the selected BSSs, a respective frame indicating the random-access RUs allocated to that BSS. Wireless devices belonging to the selected BSS may contend for access to the random-access RUs allocated by the frame, and then transmit uplink data using the random-access RUs.

## Claims

### Claim 1

A method performed by an apparatus of a wireless station (STA) belonging to a first basic service set (BSS), comprising:
receiving, from an access point (AP) operating a plurality of BSSs that includes the first BSS, a physical layer protocol data unit (PPDU) carrying one or more trigger frames, each trigger frame allocating one or more random-access resource units (RUs) to STAs associated with a respective BSS of a subset of the plurality of BSSs, each trigger frame including an association identifier (AID) value of zero; and
transmitting uplink (UL) data to the AP over the one or more random-access RUs allocated to the STAs associated with the first BSS responsive to the AID value of zero.

### Claim 2 (depends on 1)

The method of claim 1, wherein each trigger frame is carried over a different RU.

### Claim 3 (depends on 1)

The method of claim 1, wherein each trigger frame is communicated over an RU allocated to the respective BSS of the subset of BSSs.

### Claim 4 (depends on 1)

The method of claim 1, wherein the PPDU comprises a downlink (DL) multi-user (MU) PPDU.

### Claim 5 (depends on 1)

The method of claim 1, wherein a first trigger frame of the one or more trigger frames allocates a directed RU to the STA.

### Claim 6 (depends on 1)

The method of claim 1, wherein at least one of the trigger frames allocates additional random-access RUs to STAs that are not associated with the first BSS.

### Claim 7 (depends on 1)

The method of claim 1, wherein at least one of the trigger frames includes an AID value of 2047.

### Claim 8 (depends on 1)

The method of claim 1, wherein the plurality of BSSs includes a transmitted BSS and one or more non-transmitted BSSs of a multiple BSSID set, the first BSS corresponding to the transmitted BSS.

### Claim 9 (depends on 8)

The method of claim 8, wherein the AP is associated with the transmitted BSS, and at least one of the trigger frames allocates additional random-access RUs to STAs associated with at least one of the one or more non-transmitted BSSs.

### Claim 10 (depends on 8)

The method of claim 8, wherein the PPDU includes:
a first trigger frame associated with the first BSS and including an AID value set to the BSSID index of the transmitted BSS; and
one or more additional trigger frames associated with the one or more respective non-transmitted BSSs, each trigger frame of the one or more additional trigger frames including an AID value set to the BSSID index of a respective non-transmitted BSS.

### Claim 11 (depends on 8)

The method of claim 8, wherein the PPDU includes:
a first station identifier (STA-ID) value set to the BSSID index of the transmitted BSS; and
one or more additional STA-ID values set to the respective BSSID indices of the one or more non-transmitted BSSs.

### Claim 12 (depends on 11)

The method of claim 11, wherein the first STA-ID value and the one or more additional STA-ID values are carried in a physical-layer (PHY) preamble of the PPDU.

### Claim 13 (depends on 1)

The method of claim 1, wherein the one or more trigger frames comprise a broadcast frame addressed to all STAs associated with or belonging to a respective BSS of the subset of BSSs.

### Claim 14 (depends on 1)

The method of claim 1, wherein the one or more trigger frames comprise a multicast frame addressed to a group of STAs associated with or belonging to a respective BSS of the subset of BSSs.

### Claim 15 (depends on 1)

The method of claim 1, wherein the one or more random-access RUs include contention-based resources to be shared by the STA with other STAs belonging to the first BSS.

### Claim 16 (depends on 1)

The method of claim 1, further comprising:
contending for access to the one or more allocated random-access RUs responsive to the AID value of zero.

### Claim 17

A wireless communication device belonging to a first basic service set (BSS), comprising:
one or more processors; and
a memory storing instructions that, when executed by the one or more processors, cause the wireless communication device to:
receive, from an access point (AP) operating a plurality of BSSs that includes the first BSS, a physical layer protocol data unit (PPDU) carrying one or more trigger frames, each trigger frame allocating one or more random-access resource units (RUs) to wireless stations (STAs) associated with a respective BSS of a subset of the plurality of BSSs, each trigger frame including an association identifier (AID) value of zero; and
transmit uplink (UL) data to the AP over the one or more random-access RUs allocated to the STAs associated with the first BSS responsive to the AID value of zero.

### Claim 18 (depends on 17)

The wireless communication device of claim 17, wherein each trigger frame is communicated over an RU allocated to the respective BSS of the subset of BSSs.

### Claim 19 (depends on 17)

The wireless communication device of claim 17, wherein the PPDU comprises a downlink (DL) multi-user (MU) PPDU.

### Claim 20 (depends on 17)

The wireless communication device of claim 17, wherein a first trigger frame of the one or more trigger frames allocates a directed RU to the wireless communication device.

### Claim 21 (depends on 17)

The wireless communication device of claim 17, wherein at least one of the trigger frames allocates additional random-access RUs to STAs that are not associated with the first BSS.

### Claim 22 (depends on 17)

The wireless communication device of claim 17, wherein the plurality of BSSs includes a transmitted BSS and one or more non-transmitted BSSs of a multiple BSSID set, the first BSS corresponding to the transmitted BSS.

### Claim 23 (depends on 22)

The wireless communication device of claim 22, wherein the AP is associated with the transmitted BSS, and at least one of the trigger frames allocates additional random-access RUs to STAs associated with at least one of the one or more non-transmitted BSSs.

### Claim 24 (depends on 22)

The wireless communication device of claim 22, wherein the PPDU includes:
a first trigger frame associated with the first BSS and including an AID value set to the BSSID index of the transmitted BSS; and
one or more additional trigger frames associated with the one or more respective non-transmitted BSSs, each trigger frame of the one or more additional trigger frames including an AID value set to the BSSID index of a respective non-transmitted BSS.

### Claim 25 (depends on 22)

The wireless communication device of claim 22, wherein the PPDU includes:
a first station identifier (STA-ID) value set to the BSSID index of the transmitted BSS; and
one or more additional STA-ID values set to the respective BSSID indices of the one or more non-transmitted BSSs.

### Claim 26 (depends on 25)

The wireless communication device of claim 25, wherein the first STA-ID value and the one or more additional STA-ID values are carried in a physical-layer (PHY) preamble of the PPDU.

### Claim 27 (depends on 17)

The wireless communication device of claim 17, wherein the one or more trigger frames comprise a broadcast PPDU addressed to all STAs associated with or belonging to a respective BSS of the subset of BSSs.

### Claim 28 (depends on 17)

The wireless communication device of claim 17, wherein the one or more trigger frames comprise a multicast frame addressed to a group of STAs associated with or belonging to a respective BSS of the subset of BSSs.

### Claim 29 (depends on 17)

The wireless communication device of claim 17, wherein the one or more random-access RUs include contention-based resources to be shared by the wireless communication device with STAs belonging to the first BSS.

### Claim 30 (depends on 17)

The wireless communication device of claim 17, wherein execution of the instructions by the one or more processors further causes the wireless communication device to:
contend for access to the one or more allocated random-access RUs responsive to the AID value of zero.