Distributing method for physical hybrid ARQ indicator channel resources

A method for allocating resources of physical hybrid automatic repeat request indicator channels (PHICHs), comprising:

• a transmitting end dividing evenly all resources of the PHICHs to be allocated into a plurality of configured PHICH groups, and then mapping the divided PHICHs to sub-carriers of resource groups corresponding to the PHICH groups to transmit signals in the PHICHs through the sub-carriers;
• the transmitting end also allocating orthogonal codes and I path or Q path position resources for PHICHs in each PHICH group;
• wherein the transmitting end firstly evenly allocates the PHICHs to different PHICH groups;
• when the number of PHICHs in a group is less than or equal to half of the maximum number of PHICHs in each group, the PHICHs in the group are allocated to different orthogonal codes and I path or Q path positions of the orthogonal codes;
• when the number of PHICHs in a group increases gradually to exceed half of the maximum number of PHICHs in each group, a certain orthogonal code, and an I path or Q path position different from that of an existing PHICH using the orthogonal code are allocated for each newly increased PHICH;
• if the PHICH groups includes PHICH sub-groups, the transmitting end firstly evenly allocates the PHICHs to different PHICH groups;
• when the number of PHICHs in a group is less than or equal to half of the maximum number of PHICHs in each group, the PHICHs in the group are allocated to orthogonal codes of different PHICH sub-groups or different orthogonal codes of the same PHICH sub-group, and I path or Q path positions of the orthogonal codes;
• when the number of PHICHs in a group increases gradually to exceed half of the maximum number of PHICHs in each group, a certain orthogonal code and an I path or Q path position different from that of an existing PHICH using the orthogonal code are allocated for each newly increased PHICH.