Extreme-high-throughput enhanced subchannel selective transmission operation in wireless communications

A method, comprising:

• establishing communications between an access point (AP) and a non-AP station (STA) on at least a first link and a second link;
• and
• performing an extreme-high-throughput (EHT) multi-link subchannel selective transmission (SST) operation on the first link and the second link by:
• negotiating a trigger-enabled target wake time (TWT) session period (SP);
• performing a first data transmission on the first link prior to the TWT SP;
• switching to the second link to perform a second data transmission on the second link during the TWT SP;
• and
• switching back to the first link to perform a third data transmission on the first link after the TWT SP,
• wherein the negotiating of the TWT SP comprises indicating one of the first link and the second link on which an operating frequency segment is located during the TWT SP,
• wherein the indicating of the one of the first link and the second link on which the operating frequency segment is located comprises:
• indicating the one of the first link and the second link by setting a respective bit of a plurality of bits in a Link identifier (ID) subfield in a TWT Channel field in a TWT element corresponding to the one of the first link and the second link to 1;
• and
• indicating the operating frequency segment among a plurality of frequency segments within a basic service set (BSS) bandwidth by setting a respective bit of a plurality of bits in an Operating Channel Bitmap subfield in the TWT Channel field corresponding to the operating frequency segment to 1.

An apparatus, comprising:

• a transceiver configured to communicate wirelessly;
• and
• a processor coupled to the transceiver and configured to perform operations comprising:
• establishing, via the transceiver, communications between an access point (AP) and a non-AP station (STA) in a plurality of frequency segments within a basic service set (BSS) bandwidth or on at least a first link and a second link;
• and
• performing, via the transceiver, an extreme-high-throughput (EHT) subchannel selective transmission (SST) operation in the plurality of frequency segments or on the first link and the second link by:
• negotiating a trigger-enabled target wake time (TWT) session period (SP);
• performing a first data transmission in a first frequency segment of the plurality of frequency segments or on the first link prior to the TWT SP;
• switching to a second frequency segment of the plurality of frequency segments or the second link to perform a second data transmission on the second link during the TWT SP;
• and
• switching back to the first frequency segment or the first link to perform a third data transmission on the first link after the TWT SP,
• wherein the negotiating of the TWT SP comprises either:
• indicating one of the plurality of frequency segments as containing a resource unit (RU) allocation addressed to the non-AP STA;
• or
• indicating one of the first link and the second link on which an operating frequency segment is located during the TWT SP,
• wherein, in indicating the one of the first link and the second link on which the operating frequency segment is located, the processor performs operations comprising:
• indicating the one of the first link and the second link by setting a respective bit of a plurality of bits in a Link identifier (ID) subfield in a TWT Channel field in a TWT element corresponding to the one of the first link and the second link to 1;
• indicating the operating frequency segment among a plurality of frequency segments within a basic service set (BSS) bandwidth by setting a respective bit of a plurality of bits in an Operating Channel Bitmap subfield in the TWT Channel field corresponding to the operating frequency segment to 1;
• and
• indicating a packet detection channel of the non-AP STA during the TWT SP by setting a respective bit of a plurality of bits in a Packet Detection Channel Bitmap subfield in the TWT Channel field corresponding to a 20-MHz operating channel in one of the plurality of frequency segments to 1 such that packet detection is performed by the non-AP STA in the 20-MHz operating channel.