Operation of emlsr and emlmr

Patent metadata

Field	Value
Publication number	US-2022029736-A1
Application number	US-202117382598-A
Country	US
Kind code	A1
Filing date	Jul 22, 2021
Priority date	Jul 22, 2020
Publication date	Jan 27, 2022
Grant date	—

Abstract

Various embodiments relate to a method of multi-link operation between two multi-link devices (MLDs) where at least one MLD is a non-simultaneous transmit receive (NSTR) MLD that supports enhanced multi-link radio operation, including: operating, by the NSTR MLD, in a first operating mode, wherein the first operating mode is one of multi-link radio mode or enhanced multi-link radio mode; switching, by the NSTR MLD, between the first operating mode and a second operating mode, wherein the second operating mode is the multi-link radio mode when the first operating mode is the enhanced multi-link radio mode and the second operating mode is the enhanced multi-link radio mode when the first operating mode is the multi-link radio mode; announcing the operation capability by the NSTR MLD; and announcing the operating parameters by the NSTR MLD.

First claim

What is claimed is:

1 . A method of multi-link operation between two multi-link devices (MLDs) where at least one MLD is a non-simultaneous transmit receive (NSTR) MLD that supports enhanced multi-link radio operation, comprising:
operating, by the NSTR MLD, in a first operating mode, wherein the first operating mode is one of multi-link radio mode or enhanced multi-link radio mode; switching, by the NSTR MLD, between the first operating mode and a second operating mode, wherein the second operating mode is the multi-link radio mode when the first operating mode is the enhanced multi-link radio mode and the second operating mode is the enhanced multi-link radio mode when the first operating mode is the multi-link radio mode; announcing the operation capability by the NSTR MLD; and announcing the operating parameters by the NSTR MLD.

2 . The method of claim 1 , wherein switching between the first operating mode and a second operating mode includes exchanging a mode switch request action frame and as mode switch response action frame, where the new mode is indicated in an element of the frame.

3 . The method of claim 1 , wherein switching between the first operating mode and a second operating mode includes transmitting a notification frame indicating a mode switch.

4 . The method of claim 1 , wherein announcing the operation capability includes explicitly announcing a Tx/Rx spatial multiplexing capability in each link, when NSTR MLD is in an enhanced multilink multi-radio mode.

5 . The method of claim 4 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

6 . The method of claim 1 , wherein announcing the operation capability includes announcing that a Tx/Rx spatial multiplexing capability is the same in each link, when NSTR MLD is in an enhanced multilink single-radio mode.

7 . The method of claim 6 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

8 . The method of claim 1 , wherein announcing the operation capability includes explicitly announcing a Tx/Rx spatial multiplexing capability in each link.

9 . The method of claim 8 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

10 . The method of claim 1 , wherein announcing the operation capability includes announcing that a Tx/Rx spatial multiplexing capability of the enhanced multi-link radio mode is proportional to a Tx/Rx spatial multiplexing capability of the multi-link radio mode.

11 . The method of claim 1 , wherein announcing the operating parameters includes using number of spatial streams (Nss), modulation and coding scheme (MCS), and bandwidth (BW) capabilities of the enhanced multi-link radio mode when switching from the enhanced multi-link radio mode to the multi-link radio mode.

12 . The method of claim 1 , wherein announcing the operating parameters includes using announced number of spatial streams (Nss), modulation and coding scheme (MCS), and bandwidth (BW) capabilities of the multi-link radio mode of each link when switching from the multi-link radio mode to the enhanced multi-link radio mode.

13 . The method of claim 1 , wherein a mode switch request action frame includes one bit to indicate the switch between the first operating mode and the second operating mode.

14 . The method of claim 1 , wherein a mode switch request action frame includes number of spatial stream values to indicate the switch between the first operating mode and the second operating mode.

15 . The method of claim 1 , further comprising updating operating parameters in enhanced multi-link radio mode by using the Extremely High Throughput (EHT) and high efficiency (HE) operation mode (OM) control in the HE Control and Operation Mode Notification.

16 . The method of claim 15 , wherein a Tx number of spatial streams (Nss) and Rx Nss at various bandwidths (BW) and modulation and coding scheme (MCS) combinations are derived proportionally to the capabilities of an enhanced multi-link multi-radio mode.

17 . The method of claim 15 , wherein a Tx number of spatial streams (Nss) and Rx Nss at various bandwidths (BW) and modulation and coding scheme (MCS) combinations is the maximal Tx Nss and maximal Rx Nss of the enhanced multi-link single radio mode in the link where the mode changes is transmitted.

18 . The method of claim 15 , wherein the updated parameters other than Tx number of spatial streams (Nss) and Rx Nss are the parameters of the link where the HE Control and Operation Mode Notification is transmitted.

19 . A non-simultaneous transmit receive (NSTR) multi-link device MLD, comprising:
a transmitter; a receiver; a processor connected to the transmitter and the receiver configured to:
operate, by the NSTR MLD, in a first operating mode, wherein the first operating mode is one of multi-link radio mode or enhanced multi-link radio mode;
switch, by the NSTR MLD, between the first operating mode and a second operating mode, wherein the second operating mode is the multi-link radio mode when the first operating mode is the enhanced multi-link radio mode and the second operating mode is the enhanced multi-link radio mode when the first operating mode is the multi-link radio mode;
announce the operation capability by the NSTR MLD; and
announce the operating parameters by the NSTR MLD.

20 . The NSTR MLD of claim 19 , wherein switching between the first operating mode and a second operating mode includes exchanging a mode switch request action frame and as mode switch response action frame.

21 . The NSTR MLD of claim 19 , wherein switching between the first operating mode and a second operating mode includes transmitting a notification frame indicating a mode switch.

22 . The NSTR MLD of claim 19 , wherein announcing the operation capability includes explicitly announcing a Tx/Rx spatial multiplexing capability in each link, when NSTR MLD is in an enhanced multilink multi-radio mode.

23 . The NSTR MLD of claim 22 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

24 . The NSTR MLD of claim 19 , wherein announcing the operation capability includes announcing that a Tx/Rx spatial multiplexing capability is the same in each link, when NSTR MLD is in an enhanced multilink single-radio mode.

25 . The NSTR MLD of claim 24 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

26 . The NSTR MLD of claim 19 , wherein announcing the operation capability includes explicitly announcing a Tx/Rx spatial multiplexing capability in each link.

27 . The NSTR MLD of claim 26 , wherein an announced Tx/Rx number of spatial streams (Nss), modulation and coding scheme (MCS) set have the Extremely High Throughput (EHT) Nss and MCS format.

28 . The NSTR MLD of claim 19 , wherein announcing the operation capability includes announcing that a Tx/Rx spatial multiplexing capability of the enhanced multi-link radio mode is proportional to a Tx/Rx spatial

Assignees

• Nxp Usa Inc

Inventors

• Chu Liwen
• Kwon Young Hoon
• Zhang Hongyuan

Classifications

• H04L1/0009

  by adapting the channel coding (H04L1/1812 takes precedence) · CPC title

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04L1/0025 Primary

  Transmission of mode-switching indication · CPC title

• H04B7/0413

  MIMO systems · CPC title

• H04L1/0023

  characterised by the signalling · CPC title