Systems and methods for use with orthogonal frequency division multiplexing

摘要

Systems and methods are provided for enabling H-ARQ communication between a base station and one or more wireless terminals. Methods for enabling incremental redundancy (IR) based H-ARQ, Chase based H-ARQ and Space-Time Code combining (STC) based H-ARQ between devices for down-link and up-link direction transmissions are provided in the form of an information element (IE) for use with a Normal MAP convention as currently accepted in the draft version standard of IEEE 802.16. In addition, embodiments of the invention provide a resource management scheme to protect a network from abuse of resources from a wireless terminal not registered with the network. Components of the down-link and up-link mapping components of a data frame transmitted from the base station to one or more wireless terminals included messages that are readable by all wireless terminals as well as some messages that are encrypted and only readable by wireless terminals that are authenticated as being registered with the network.

主权项

1. A method in a base station for operating a hybrid automatic repeat request (H-ARQ) enabled OFDM (orthogonal frequency multiplexing) connection with a wireless terminal, the method comprising:
for each transmission resource allocation, the base station:
sending, for reception by the wireless terminal, information of where a H-ARQ transmission is located in a data frame;sending an identification of the H-ARQ transmission, and wherein the wireless terminal is a MIMO enabled wireless terminal and for enabling the H-ARQ transmission in an up-link (UL) direction from the wireless terminal to the base station, the method further comprising for each transmission resource allocation, the base station:
identifying the H-ARQ transmission as being performed by one of a collaborative spatial multiplexing transmission and a non-collaborative spatial multiplexing transmission using a collaborative spatial multiplexing indication; andsending the collaborative spatial multiplexing indication.