MAPPING METHOD FOR PHYSICAL HYBRID ARQ INDICATOR CHANNEL

摘要

A mapping method for Physical Hybrid ARQ Indicator Channel (PHICH) is provided. The method includes: adding an offset to the lowest index of the physical resource block of the uplink resource allocation, when processing the PHICH mapping in the uplink cross-carrier scheduling (102). Another mapping method for PHICH is also provided. The method includes: in the uplink multiple antennas scene, allocating a or a set of demodulation reference signal dynamic cyclic shift in the downlink control information format to a user equipment, when sending the uplink data confirming or non-confirming information by the PHICH, a base station decides the demodulation reference signal dynamic cyclic shift patameter nDMRS in the PHICH resource mapping according to the signalling of the downlink control information. It can mitigate the problem of the PHICH resource conflict in the cross-carrier scheduling.