FIELD: information technology.
SUBSTANCE: supergroups can be formed from groups of Physical Hybrid Automatic Repeat Request Channels (PHICH) such that respective PHICH supergroups are multiplexed onto respective non-overlapping resource element subgroups, thereby improving resource usage efficiency for the extended cyclic prefix case and limited number of transmitting antennae. In one example described herein, even-indexed PHICH groups are mapped to a selected subset of resource elements in a group while odd-indexed PHICH groups are mapped to the remaining resource elements in the group. This mapping can be performed by modifying orthogonal sequences associated with the PHICH groups and/or by performing resource mapping using other techniques for respective PHICH supergroups. Upon receiving a transmission of mapped PHICH information, a receiving entity can use knowledge of the mapping to decode transmitted PHICH information using the proper resource subgroup(s).
EFFECT: improved resource management in a wireless communication system.
50 cl, 17 dwg, 1 tbl
