Transmission method, device, and system for PHICH

A transmission method for Physical Hybrid ARQ Indicator Channel (PHICH), comprising:

• a NodeB determining PHICH resources according to a UE-specific manner, wherein the NodeB determining the PHICH resources according to the UE-specific manner comprises:
• the NodeB determining PHICH frequency domain resources according to a UE-specific cell identity;
• and scrambling the PHICH using a currently used PHICH scrambling code according to the UE-specific manner, wherein the NodeB scrambling the PHICH using the currently used PHICH scrambling code according to the UE-specific manner comprises:
• the NodeB scrambling the PHICH using a currently used PHICH scrambling code according to a UE-specific cell identity;
• and
• the NodeB sending the scrambled PHICH on the determined PHICH resources;
• wherein before the NodeB determines the PHICH resources and scrambling the PHICH using the currently used PHICH scrambling code according to the UE-specific manner, the NodeB notifying the UE-specific cell identity to a user terminal via UE-specific Radio Resource Control (RRC) signaling;
• and
• wherein after the NodeB sends the scrambled PHICH on the determined PHICH resources, the method further comprises:
• the user terminal descrambling the received scrambled PHICH according to the UE-specific cell identity to which the user terminal belongs.