1. EDMG capabilities for Open Loop Spatial Multiplexing in SU-MIMO
January 2017
doc.: IEEE /0059r0
January 2017
EDMG capabilities for Open Loop Spatial Multiplexing in SU-MIMO
Date:
Authors:
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

2. January 2017
doc.: IEEE /0059r0
January 2017
Introduction
Several MIMO scenarios for 11ay have been proposed [1], and the contributions of [2]-[4] focus on MIMO scenario for open loop spatial multiplexing (OLSM).
The contribution [3] proposed PH (Phase Hopping) as OLSM, and the contribution [4] proposed PH with precoding.
The contribution [5] proposed additional EDMG-Header-A fields for PH and precoding.
This contribution proposes EDMG capabilities fields related to OLSM.
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

3. Necessity of EDMG capabilities related to OLSM
January 2017
doc.: IEEE /0059r0
January 2017
Necessity of EDMG capabilities related to OLSM
The current SFD [6] defines PH and open loop precoding as follows.
“When using the EDMG OFDM mode, the 11ay specification shall define SU EDMG PPDU transmission with and without phase hopping. An EDMG STA may support transmission and reception of SU EDMG PPDU with phase hopping. In this mechanism, the following apply:
　　- Precoding may be used and
- The period of phase hopping is TBD.”
It is necessary for receivers to transmit EDMG capabilities related to OLSM, because a transmitter needs to know whether receivers have a capability of demodulation of PH and precoding.
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

4. Definition of EDMG capabilities related to OLSM
January 2017
doc.: IEEE /0059r0
January 2017
Definition of EDMG capabilities related to OLSM
The EDMG capabilities element is defined in Draft IEEE802.11ay D0.1 [7].
To indicate whether receivers have a capability of demodulation of PH and precoding, phase hopping capability information (1bit)/Open loop precoding capability information (1bit) are needed in the core capabilities field of the EDMG capabilities element.
Name
Number of bits
Description
PH Supported 1
Set to 1 if the STA supports phase hopping as specified in Set to 0 otherwise.
Open Loop Precoding Supported
Set to 1 if the STA supports open loop precoding as specified in Set to 0 otherwise.
Proposed Core Capabilities Field
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

5. January 2017
doc.: IEEE /0059r0
January 2017
Conclusions
It is necessary for receivers to transmit EDMG capabilities related to OLSM in the 11ay capability exchange.
It is proposed to include two bits related to OLSM in the core capabilities field of the EDMG capabilities element.
- Phase hopping capability information (1bit)
- Open loop precoding capability information (1bit)
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

6. References [1] 11-15-0334-01-ng60-mimo-framework
January 2017
doc.: IEEE /0059r0
January 2017
References
[1] ng60-mimo-framework
[2] ay-performance-analysis-of-open-loop-su-mimo- receivers-for-ieee ay
[3] ay-open-loop-spatial-multiplexing-with-phase- hopping-for-11ay
[4] ay-open-loop-spatial-multiplexing-with-phase- hopping-for-11ay
[5] ay-edmg-phy-headers-for-open-loop-spatial- multiplexing-in-su-mimo
[6] ay-11ay Spec Framework
[7] Draft IEEE802.11ay D0.1
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic

7. January 2017
doc.: IEEE /0059r0
January 2017
Straw Poll
Do you agree to add the following capability information in the core capabilities field of the EDMG capabilities element regarding open loop precoding into the 11ay SFD?
　　- Open Loop Precoding Supported field (1bit)
Yutaka Murakami, Panasonic
Yutaka Murakami, Panasonic