VARIABLE PACKET LENGTHS FOR HIGH PACKET DATA RATE COMMUNICATIONS

摘要

Method and apparatus for variable length Physical Layer (PL) packet
generation. Multiple Security Layer (SL) packets may be multiplexed into a
single PL packet to increase efficiency, wherein the SL packets may have
variable lengths. In one embodiment, different format SL packets for different
users are combined into capsules that form the PL packet. Shorter packets are
for users in poor channel conditions or requiring smaller amounts of data due
to the applications and the accompanying Quality of Service (QoS)
requirements. In one embodiment, a modified Preamble structure provides for
Unicast or multi-user packets. Alternate embodiment provides modified Rate
Sets, a mechanism for identifying ACK from a single-user packet or a
multiplexed packet (delayed ACK). ON/OFF keying for ACK channel v/s bi-polar
keying used in IS-856, and/or multi-valued interpretation of DRC.