Figure 1.
Figure 2.
Figure 3.
Timeline
| Time | Work | Objective |
|---|---|---|
| 2023-08-01 | Proposal | LMGA proposal is submitted |
| 2023-08-08 | 6th Meeting | LMGA proposal is revised or approved |
| 2023-12-11 | AG 4 Report | LMGA is included in AG 4 report and recommendations to SC 6 |
| 2024-04-01 | LMGAR | 1st draft of LAN MCS Gap Analysis Report is presented to AG 4 |
| 2024-07-01 | Revision | 2nd draft of LMGAR is presented to AG 4 |
| 2024-09-01 | Completion | Final Report on LMGAR is approved and submitted to SC 6 |
PAM Modulation
| Modulation | Application |
|---|---|
| PAM 3 | 100BASE-T1 100BASE-T4 1000BASE-T1 |
| PAM 4 | 400G |
| PAM 5 | 10BASE-T 100BASE-T2 1000BASE-T |
| PAM 16 | 2.5GBASE-T 5GBASE-T 10GBASE-T 25GBASE-T 50GBASE-T |
Comparing WLAN and LAN
| Parameters | WLAN | LAN/Ethernet |
|---|---|---|
| Connection Method | Wireless | Wired |
| Communication Medium | Air | Copper, Fiber, etc. |
| Latency | Low | High |
| Mobility and Rooming | higher | limited |
| speed | Gigabits | Higher speed over 400G |
| Need for MCS | required | required |
| access | Proximity required | Physical access required |
| Sharing | Shared | dedicated |
| interference | high | Much less |
| Fluctuation vulnerability | high | Much less |
| Reliability | Much Less | high |
| coverage | 100 meters | Meters to kilometers |
LAN and WLAN Modulation Comparison
| Parameters | LAN/Ethernet | WLAN |
|---|---|---|
| Highest data rates | 400G | 10G |
| QAM modulation | 2018 | 1999 |
| Highest order (Mandatory) | 4096-QAM | 1024-QAM |
| Highest order (Optional) | 16384-QAM | 4096-QAM (planned) |
| Highest possible | Upto 16384-QAM | No more planned beyond 4096- QAM |
| Adoption | Limited application | System wide |
| Spatial Streams | None | 8 |
PAM modulation types and application scenarios
| Modulation | Application | Spectral Efficiency bps/Hz |
|---|---|---|
| PAM 3 | 100BASE-T1 100BASE-T4 1000BASE-T1 | <2 |
| PAM 4 | 400G | <2 |
| PAM 5 | 10BASE-T 100BASE-T2 1000BASE-T | <2 |
| PAM 16 | 2.5GBASE-T 5GBASE-T 10GBASE-T 25GBASE-T 50GBASE-T | 3.125 |
EPOC and QAM Modulation
| Time | Event | QAM Modulation |
|---|---|---|
| 2011-11 | Call for Interest | Modulation was not mentioned |
| 2012-08 | PAR Approved | Modulation was not mentioned |
| 2012-10-28 | Motion 11 Approved | Support multiple downstream modulation orders up to 4096QAM. Support multiple upstream modulation orders up to 1024QAM. |
| 2013-01-25 | Motion 3 Approved | The downstream PHY Link Channel shall use a fixed modulation order of 16 QAM to carry PHY Link |
| 2013-03-21 | Motion 4 Approved | The E PoC standard shall support multiple modulation profiles for the bursting DS and US PHY and a single modulation profile for the continuous DS PHY. |
| 2014-01-22 | Motion 11 Approved | Support for 2048 and 4096 QAM in the TDD upstream shall be mandatory, using the same QAM constellation mapping as the FDD downstream. |
| 2014-09 | 1st draft | |
| 2015-03 | 2nd draft | |
| 2015-10 | 3rd draft | |
| 2016-11 | IEEE Standard | |
| 2018-12-11 | ISO/IEC Standard | ISO/IEC/IEEE 8802-3:2017/A md 6-2018 |
M-QAM Application
| Modulation | Standard |
|---|---|
| M-QAM | 10GPASS-XR 1000BASE-RHx Management Data Input/Output (MDIO) Interface EPoC (802.3bn-2016) |