MAPPING CYCLIC SHIFT TO CHANNEL INDEX FOR ACK/NACK RESOURCE ALLOCATION Russian patent published in 2013 - IPC H04W72/04 

FIELD: information technology.

SUBSTANCE: from the network perspective, an uplink resource allocation (PDCCH) is sent that grants an uplink resource to a plurality of user equipment (UE), and the allocation has an indication of a cyclic shift (CS) for each of the plurality of UE. The granted uplink resource is mapped to a downlink resource (PHICH) depending on the indicated CS for each of the plurality of UE. The mapping is such that for a predetermined number of UE being allocated the same uplink resource in a single MU-MIMO uplink resource allocation grant, each pair of said predetermined number of UE which map to an adjacent downlink resource exhibit an optimised CS relative to one another.

EFFECT: network sends to each of the respective plurality of UE through the respective mapped downlink resource an indication about data received.

20 cl, 14 dwg