Coordinated beamforming for overlapping BSS (OBSS) in wireless LAN (WLAN)—exchange of identity information
First Claim
1. A method for a coordinated beamforming for overlapping basic service sets (OBSSs) in wireless local area network (WLAN), wherein the OBSSs comprise a plurality of access points (APs) and a plurality of stations (STAs) in a plurality of corresponding basic service sets (BSSs), the method comprising:
- transmitting, by a first AP of the plurality of APs, to other APs of the plurality of APs a first coordinated beamforming (CB) announcement message, wherein the first CB announcement message includes an identifier (ID) of the first AP, IDs of STAs associated with the first AP, and beamforming capability information of the first AP, the first AP being in a first BSS of the plurality of the BSSs and the other APs being in other BSSs of the plurality of the BSSs; and
receiving, by the first AP, a second CB announcement message from a second AP of the plurality of APs, wherein the second CB announcement message includes an ID of the second AP, IDs of STAs associated with the second AP, and beamforming capability information of the second AP, the second AP being in a second BSS of the plurality of the BSSs, wherein the first AP obtains channel state information of the STAs associated with the second AP based on the IDs of STAs associated with the second AP in the second CB announcement message.
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Abstract
A method and a device for a coordinated beamforming for overlapping BSS (OBSS) in WLAN are shown. In an embodiment the method includes transmitting, by a first access point (AP) of the plurality of APs, to other APs of the plurality of APs a first coordinated beamforming (CB) announcement message, wherein the first CB announcement message includes an identifier (ID) of the first AP, an ID of each station (STA) associated with the first AP, and a beamforming capability information of the first AP and receiving, by the first AP, a second CB announcement message from a second AP of the plurality of APs.
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Citations
20 Claims
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1. A method for a coordinated beamforming for overlapping basic service sets (OBSSs) in wireless local area network (WLAN), wherein the OBSSs comprise a plurality of access points (APs) and a plurality of stations (STAs) in a plurality of corresponding basic service sets (BSSs), the method comprising:
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transmitting, by a first AP of the plurality of APs, to other APs of the plurality of APs a first coordinated beamforming (CB) announcement message, wherein the first CB announcement message includes an identifier (ID) of the first AP, IDs of STAs associated with the first AP, and beamforming capability information of the first AP, the first AP being in a first BSS of the plurality of the BSSs and the other APs being in other BSSs of the plurality of the BSSs; and receiving, by the first AP, a second CB announcement message from a second AP of the plurality of APs, wherein the second CB announcement message includes an ID of the second AP, IDs of STAs associated with the second AP, and beamforming capability information of the second AP, the second AP being in a second BSS of the plurality of the BSSs, wherein the first AP obtains channel state information of the STAs associated with the second AP based on the IDs of STAs associated with the second AP in the second CB announcement message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A first access point (AP) in overlapping basic service sets (OBSSs) in a wireless local area network (WLAN), wherein the OBSSs comprise a plurality of APs and a plurality of stations (STAs) in a plurality of corresponding basic service sets (BSSs), the first AP being in a first BSS of the plurality of the BSSs and comprising:
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a processor; and a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to; transmit to other APs of the plurality of APs a first coordinated beamforming (CB) announcement message, wherein the first CB announcement message includes an identifier (ID) of the first AP, IDs of STAs associated with the first AP, and beamforming capability information of the first AP, the other APs being in other BSSs of the plurality of the BSSs; and receive a second CB announcement message from a second AP of the plurality of APs, wherein the second CB announcement message includes an ID of the second AP, IDs of STAs associated with the second AP, and beamforming capability information of the second AP, the second AP being in a second BSS of the plurality of the BSSs, wherein the first AP obtains channel state information of the STAs associated with the second AP based on the IDs of STAs associated with the second AP in the second CB announcement message. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification