Method for performing medium access control protocol data unit dispatch control in multi-link operation architecture, and associated apparatus

A method for performing medium access control (MAC) protocol data unit (MPDU) dispatch control in multi-link operation (MLO) architecture, the method being applicable to a wireless transceiver device within a wireless communications system, the method comprising:

• utilizing the wireless transceiver device to communicate with another device within the wireless communications system, to allow data transmission between the wireless transceiver device and the other device through at least one portion of links among multiple links respectively corresponding to multiple predetermined radio frequency bands;
• and
• performing a dispatch control procedure to dispatch multiple MAC protocol data units (MPDUs) into multiple physical layer (PHY) protocol data units (PPDUs) corresponding to a set of selected links according to at least one predetermined rule in a predetermined mode of the wireless transceiver device, for sending the multiple PPDUs to the other device through the set of selected links, wherein the predetermined mode represents a hybrid mode in which the multiple links comprise multiple enhanced multi-link single radio (EMLSR) links and at least one simultaneous transmit and receive (STR) link;
• wherein according to the at least one predetermined rule, the wireless transceiver device is arranged to dispatch a set of MPDUs among the multiple MPDUs into one EMLSR link among the multiple EMLSR links;
• and according to a first predetermined rule among the at least one predetermined rule, if one of multiple synchronization (Sync) start links among the multiple links is a first EMLSR link among the multiple EMLSR links, the wireless transceiver device is arranged to dispatch the set of MPDUs into the first EMLSR link, and prevent dispatching any MPDU among the multiple MPDUs into any other EMLSR link among the multiple EMLSR links, wherein the one EMLSR link represents the first EMLSR link.

A wireless transceiver device, for performing medium access control (MAC) protocol data unit (MPDU) dispatch control in multi-link operation (MLO) architecture, the wireless transceiver device being one of multiple devices within a wireless communications system, the wireless transceiver device comprising:

• a processing circuit, arranged to control operations of the wireless transceiver device;
• and
• at least one communications control circuit, coupled to the processing circuit, arranged to perform communications control, wherein the at least one communications control circuit is arranged to perform wireless communications operations with another device among the multiple devices for the wireless transceiver device;
• wherein:
• the wireless transceiver device is arranged to communicate with the other device, to allow data transmission between the wireless transceiver device and the other device through at least one portion of links among multiple links respectively corresponding to multiple predetermined radio frequency bands;
• and
• the wireless transceiver device is arranged to perform a dispatch control procedure to dispatch multiple MAC protocol data units (MPDUs) into multiple physical layer (PHY) protocol data units (PPDUs) corresponding to a set of selected links according to at least one predetermined rule in a predetermined mode of the wireless transceiver device, for sending the multiple PPDUs to the other device through the set of selected links, wherein the predetermined mode represents a hybrid mode in which the multiple links comprise multiple enhanced multi-link single radio (EMLSR) links and at least one simultaneous transmit and receive (STR) link;
• wherein according to the at least one predetermined rule, the wireless transceiver device is arranged to dispatch a set of MPDUs among the multiple MPDUs into a first EMLSR link among the multiple EMLSR links and dispatch another set of MPDUs among the multiple MPDUs into the at least one STR link, no matter whether a first backoff counter value of a first backoff counter corresponding to the first EMLSR link reaches a predetermined backoff termination value first among backoff counter values of all backoff counters respectively corresponding to the multiple links.