OPTIMIZING RESPONSE INTERFRAME SPACE IN COMMUNICATION SYSTEMS

摘要

A response interframe space (RIFS) time period may be adapted in a communication system. The RIFS time period may be determined based, at least in part, on a processing time used by a receiving device to process a received physical layer transmission from a transmitting device. The RIFS may be optimized in consideration of channel conditions for a particular communications channel, capabilities of a receiving device, and/or characteristics of a particular physical layer transmission. For example, the RIFS may be dependent on characteristics of a final transmission symbol used to transmit a physical layer transmission. The RIFS may depend on a processing time associated with decoding forward error correction (FEC) encoded blocks that end in the final transmission symbol. The RIFS may depend on a quantity of decoding iterations in a communication system that uses iterative decoding of FEC encoded blocks.

主权项

1. A method comprising:
receiving, via a communications medium, a physical layer (PHY) protocol data unit (PPDU) that includes multiple FEC encoded blocks, the PPDU received as a series of modulation symbols; determining a response interframe space (RIFS) based at least in part on a processing time associated with processing a final modulation symbol of the PPDU, the RIFS defining a RIFS time period after a final modulation symbol of the PPDU is received and before sending an acknowledgment message; and sending the acknowledgment message responsive to receiving the PPDU after the RIFS time period associated with the RIFS.