Method and apparatus for use in cooperative relays using incremental redundancy and distributed spatial multiplexing

摘要

A method and apparatus may be used in cooperative relays with incremental redundancy (IR) and distributed spatial multiplexing. A wireless transmit/receive unit (WTRU) may listen to the base station (BS) transmission during a first phase of the communication, and use cooperation between a relay station (RS) and the BS for the data transmission during a second phase to improve performance. During the second phase, both the BS and the RS may transmit data to the WTRU, using either distributed Space Time Block Codes/Space Frequency Block Codes (STBC/SFBC) or distributed spatial multiplexing.

主权项

1. A relay station (RS) comprising:
a receiver configured to receive a first phase transmission from a base station (BS); and a transmitter configured to transmit a second phase transmission over an RS link, wherein the second phase transmission contains a subset of bits received in the first phase transmission and contains a plurality of bits coded with different redundancy versions (RVs), wherein the RS link is allocated a greater proportion of the plurality of bits on a condition that a link quality of the RS link is stronger than a link quality of a BS link, wherein the BS link is allocated a greater proportion of the plurality of bits on a condition that the link quality of the BS link is stronger than the link quality of the RS link; and wherein the transmitter is further configured to transmit a channel quality index (CQI) feedback to the BS.