Patent ID: 11888615
Assignee: APPLE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A base station, comprising:
a transceiver configured to:
group a plurality of wireless stations into a plurality of groups based on modulation and coding schemes (MCSs);
create multiple bitmaps indicating which first group of wireless stations will be allocated resources during a first allocation period, wherein a second group of wireless stations are not allocated resources during the first allocation period; and
transmit frames associated with the multiple bitmaps using OFDM, each frame occupying a plurality of OFDM symbols;
perform hybrid resource allocation for Hybrid Automatic Request (HARQ) downlink traffic transmissions to a mobile station; and

a processor configured to perform operations, the operations comprising:
schedule a fixed resource allocation in every N frame and dynamically schedule resource allocation for HARQ retransmissions of a packet, wherein the fixed resource allocation is for a defined period of time;
transmit a respective bitmap for each of a plurality of HARQ interlaces wherein a HARQ interlace comprises of a plurality of timeslot within the N frame, wherein the plurality of timeslots are used for initial transmissions and retransmissions for each of the defined groups of wireless stations; and
dynamically schedule resource allocation for HARQ retransmissions of a packet using an ACK-NAK-echo bitmap for the HARQ retransmission.