Bandwidth indication with preamble puncturing in wireless communications

Patent metadata

Field	Value
Publication number	US-12133202-B2
Application number	US-202117552222-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	Dec 18, 2020
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

Various schemes pertaining to bandwidth indication with preamble puncturing in wireless communications are described. An apparatus (e.g., a station (STA)) receives a control frame and, in response, transmits a control response frame. In the control frame, either or both of a scrambling sequence and a SERVICE field are set to indicate bandwidth and preamble puncturing information.

First claim

What is claimed is:

1. A method, comprising:
receiving a control frame; and
transmitting a control response frame responsive to receiving the control frame,
wherein either or both of a scrambling sequence and a SERVICE field of the control frame are set to indicate bandwidth and preamble puncturing information, and
wherein, in an event that the receiving and the transmitting are performed in a 6 GHz band:
at least six reserved bits of the plurality of reserved bits in the SERVICE field of the control frame are set to indicate a bandwidth and a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
at least six reserved bits of a plurality of reserved bits in a SERVICE field of the control response frame are set to indicate a bandwidth and an MRU or MRU pattern regarding preamble puncturing of the control response frame.

2. The method of claim 1 , wherein either one or more bits of first seven bits of the scrambling sequence and one or more bits in the SERVICE field of the control frame are set to indicate the bandwidth and preamble puncturing information.

3. The method of claim 1 , wherein, in the control frame, a Unicast/Multicast bit in each of a transmitter address (TA) field and a receiver address (RA) field is set to Multicast as an indication that either or both of the scrambling sequence and the SERVICE field of the control frame carrying bandwidth and preamble puncturing information.

4. The method of claim 3 , wherein the transmitting of the control response frame comprises:
changing the Unicast/Multicast bit in the RA field to Unicast;
comparing the RA field to a medium access control (MAC) address of a station (STA) that receives the control frame to determine whether the RA field matches the MAC address of the STA; and
in an event that the RA field matches the MAC address of the STA:
changing the Unicast/Multicast bit in the TA field to Unicast;
inserting the changed TA field in a RA field of the control response frame; and
transmitting the control response frame in a physical-layer protocol data unit (PPDU).

5. The method of claim 1 , wherein, in an event that the receiving and the transmitting are performed in a bandwidth less than or equal to 160 MHz:
four of first seven bits of the scrambling sequence of the control frame are set to indicate a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
four of first seven bits of a scrambling sequence of the control response frame are set to indicate an MRU or MRU pattern regarding preamble puncturing of the control response frame.

6. The method of claim 5 , wherein one of the plurality of reserved bits in the SERVICE field of the control frame is set to indicate either static or dynamic MRU negotiation at a 6 GHz band, and wherein the plurality of reserved bits in the SERVICE field of the control frame are set to a reserved value at a 5 GHz band.

7. The method of claim 1 , wherein, in an event that the receiving or the transmitting is performed in a bandwidth greater than 160 MHz:
four of first seven bits of the scrambling sequence and a first reserved bit of the plurality of reserved bits in the SERVICE field of the control frame are set to indicate a bandwidth and a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
four of first seven bits of the scrambling sequence and a first reserved bit of a plurality of reserved bits in a SERVICE field of the control response frame are set to indicate a bandwidth and an MRU or MRU pattern regarding preamble puncturing of the control response frame.

8. The method of claim 7 , wherein:
a second reserved bit of the plurality of reserved bits in the SERVICE field of the control frame is set to 1 to indicate a bandwidth greater than 160 MHz, and
a third reserved bit of the plurality of reserved bits in the SERVICE field of the control frame is set to indicate either static or dynamic MRU negotiation at a 6 GHz band.

9. The method of claim 1 , wherein, in an event that the receiving and the transmitting are performed in a 5 GHz band:
four of first seven bits of the scrambling sequence of the control frame are set to indicate a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
four of first seven bits of a scrambling sequence of the control response frame are set to indicate an MRU or MRU pattern regarding preamble puncturing of the control response frame.

10. The method of claim 9 , wherein the plurality of reserved bits in the SERVICE field of the control frame are set to a reserved value at a 5 GHz band.

11. The method of claim 1 , wherein a seventh reserved bit of the plurality of reserved bits in the SERVICE field of the control frame is set to indicate either static or dynamic MRU negotiation at a 6 GHz band.

12. A method, comprising:
transmitting a control frame; and
receiving a control response frame responsive to transmitting the control frame,
wherein either or both of a scrambling sequence and a SERVICE field of the control frame are set to indicate bandwidth and preamble puncturing information, and
wherein, in an event that the receiving and the transmitting are performed in a 6 GHz band:
at least six reserved bits of the plurality of reserved bits in the SERVICE field of the control frame are set to indicate a bandwidth and a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
at least six reserved bits of a plurality of reserved bits in a SERVICE field of the control response frame are set to indicate a bandwidth and an MRU or MRU pattern regarding preamble puncturing of the control response frame.

13. The method of claim 12 , wherein either one or more bits of first seven bits of the scrambling sequence and one or more bits in the SERVICE field of the control frame are set to indicate the bandwidth and preamble puncturing information.

14. The method of claim 12 , wherein, in the control frame, a Unicast/Multicast bit in each of a transmitter address (TA) field and a receiver address (RA) field is set to Multicast as an indication that either or both of the scrambling sequence and the SERVICE field of the control frame carrying bandwidth and preamble puncturing information.

15. The method of claim 12 , wherein, in an event that the receiving and the transmitting are performed in a bandwidth less than or equal to 160 MHz:
four of first seven bits of the scrambling sequence of the control frame are set to indicate a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
four of first seven bits of a scrambling sequence of the control response frame are set to indicate an MRU or MRU pattern regarding preamble puncturing of the control response frame.

16. The method of claim 15 , wherein one of the plurality of reserved bits in the SERVICE field of the control frame is set to indicate either static or dynamic MRU negotiation at a 6 GHz band, and wherein the plurality of reserved bits in the SERVICE field of the control frame are set to a reserved value at a 5 GHz band.

17. The method of claim 12 , wherein, in an event that the receiving or the transmitting is performed in a bandwidth greater than 160 MHz:
four of first seven bits of the scrambling sequence and a first reserved bit of the plurality of reserved bits in the SERVICE field of the control frame are set to indicate a bandwidth and a multiple resource unit (MRU) or MRU pattern regarding preamble puncturing, and
four of first seven bits of the scrambling sequence and a first reserved bit of a plurality of reserved bits in

Assignees

• Mediatek Singapore Pte Ltd

Inventors

• Lu Kai Ying
• Seok Yongho
• Yee James Chih-Shi
• Liu Jianhan

Classifications

• H04W4/06

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title

• H04L5/0092

  Indication of how the channel is divided · CPC title

• H04W72/20

  Control channels or signalling for resource management · CPC title

• H04W74/002

  Transmission of channel access control information · CPC title

• H04L5/0005

  Time-frequency · CPC title