April 2017
doc.: IEEE 802.11-17/0540r2
MIMO phase of SU-MIMO and MUMIMO Beamforming
Date: 2017-04-11
Authors:
Name
Affiliations
Address
Lei Huang
Phone email
[email protected]
Hiroyuki Motozuka
Panasonic Corporation
Gaius Wee
Takenori Sakamoto
Submission
Slide 1
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Background: MIMO phase of SU-MIMO BF
 The MIMO phase of SU-MIMO beamforming enables the training of transmit and receive
sectors and antennas to determine best combinations of transmit and receive sectors and antennas
for SU-MIMO operation, which comprises of three subphases [1]:
– SU-MIMO Setup (based on MIMO Setup frame)
– Initiator/Responder SU-MIMO Training (based on EDMG BRP-RX/TX packet)
– SU-MIMO Feedback (based on MIMO Feedback frame)
SU-MIMO Setup
MIMO
MIMO
Setup
Setup
SU-MIMO Feedback
I-SMT
BRP
BRP
BRP
BRP
...
...
MIMO
MIMO
Feedback
Feedback
MIMO
MIMO
Feedback
Feedback
BRP
BRP
Initiator
MIMO
MIMO
Setup
Setup
BRP
BRP
BRP
BRP
...
...
BRP
BRP
MIMO
MIMO
Feedback
Feedback
Responder
R-SMT
Submission
2
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Background: MIMO phase of MU-MIMO BF
 The MIMO phase of MU-MIMO beamforming enables the training of transmit sectors and antennas
of initiator and receive sectors and antennas of each responder intended to be part of MU group to
determine best MU-MIMO configuration, which comprises of four subphases [1]:
–
–
–
–
MU-MIMO BF Setup (based on BF Setup frame)
MU-MIMO BF Training (based on EDMG BRP-RX/TX packet)
MU-MIMO FB Poll (based on BF Poll frame and BF Feedback frame)
MU-MIMO Selection (based on BF Selection frame)
MU-MIMO BF Setup
MU-MIMO BF Training
MU-MIMO FB Poll
MU-MIMO
selection
Initiator
STA1
STA2
STA3
Responder
MU-MIMO FBs
Submission
3
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Proposal
 Problem statement: Different terminologies are used for similar MIMO
subphases of SU-MIMO BF and MU-MIMO BF, which may cause unnecessary
confusion



SU-MIMO Setup v.s. MU-MIMO BF Setup
SU-MIMO Training v.s. MU-MIMO BF Training
SU-MIMO Feedback v.s. MU-MIMO FB Poll
 Unify terminologies for similar MIMO subphases of SU-MIMO BF and MUMIMO BF



SU/MU-MIMO BF Setup
SU/MU-MIMO BF Training
SU/MU-MIMO BF Feedback
 Rename the MU-MIMO Selection subphase to the MU-MIMO BF Selection
subphase in order to keep similar naming convention to other subphases.
Submission
4
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Proposal (cont.)
 Problem statement: Different frames are used for similar purposes in the
MIMO phase of SU-MIMO BF and MU-MIMO BF, which increases
specification complexity
 SU/MU-MIMO BF Setup: MIMO Setup frame v.s. BF Setup frame
 SU/MU-MIMO BF Feedback: MIMO Feedback frame v.s. BF Feedback frame
 Unify frames used for similar purposes in the MIMO phase of SU-MIMO
BF and MU-MIMO BF
 SU/MU-MIMO BF Setup (based on MIMO BF Setup frame)
 SU/MU-MIMO BF Feedback (based on MIMO BF Feedback frame)
 Rename the FB Poll frame to MIMO BF Feedback Poll frame and the BF
Selection frame to MIMO BF Selection frame used in MU-MIMO BF in
order to keep similar naming convention to other frames
Submission
5
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Proposal (cont.)
I-SMBT
SU-MIMO BF Setup
MIMO
MIMO
BF
BF
Setup
Setup
BRP
BRP
BRP
BRP
SU-MIMO BF Feedback
...
...
MIMO
MIMO BF
BF
Feedback
Feedback
BRP
BRP
MIMO
MIMO BF
BF
Feedback
Feedback
Initiator
MIMO
MIMO
BF
BF
Setup
Setup
BRP
BRP
BRP
BRP
...
...
BRP
BRP
MIMO
MIMO BF
BF
Feedback
Feedback
Responder
R-SMBT
MIMO phase of SU-MIMO beamforming
Submission
6
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Proposal (cont.)
MU-MIMO BF Setup
MIMO
MIMO
BF
BFSetup
Setup
...
...
MIMO
MIMO
BF
BFSetup
Setup
MU-MIMO BF Training
BRP
BRP
BRP
BRP
...
...
BRP
BRP
MU-MIMO BF Feedback
MIMO
MIMOBF
BF
Feedback
Feedback
Poll
Poll
MIMO
MIMOBF
BF
Feedback
Feedback
Poll
Poll
...
...
MU-MIMO BF Selection
MIMO
MIMOBF
BF
Feedback
Feedback
Poll
Poll
MIMO
MIMO
BF
BF
Selection
Selection
...
...
MIMO
MIMO
BF
BF
Selection
Selection
Initiator
MIMO
MIMOBF
BF
Feedback
Feedback
Responder 1
MIMO
MIMOBF
BF
Feedback
Feedback
Responder 2
...
...
MIMO
MIMOBF
BF
Feedback
Feedback
Responder M
MIMO phase of MU-MIMO beamforming
Submission
7
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
SP
• Do you agree to incorporate the proposed changes on the
MIMO phase of SU-MIMO beamforming and MU-MIMO
beamforming as shown in IEEE 802.11-17/0541r2 into the
next draft 11ay specification?
– Y
– N
– A
Submission
8
Lei Huang (Panasonic)
April 2017
doc.: IEEE 802.11-17/0540r2
Reference
[1] Draft P802.11ay_D0.3
Submission
9
Lei Huang (Panasonic)