Resource allocation method of retransmitted data block in HSDPA (High Speed Downlink Packet Access) scheduling

The invention discloses a resource allocation method of a retransmitted data block in HSDPA (High Speed Downlink Packet Access) scheduling, comprising the following steps of: when a NodeB receives scheduled HS-SICH (High Speed Shared Indication Control Channel) carrying with a NACK (Negative Acknowledgement) bit in an nth subframe, determining a data block needing to retransmit an n-2 subframe toa UE (User equipment) by using the NodeB, wherein the scheduled HS-SICH is transmitted by the UE; calculating the expected Eb/N0 of each information bit under the current wireless channel by utilizing the NodeB according to the received CQI (Channel Quality Indicator) information; then determining the Eb/N0 required for each information bit according to the expected Eb/N0 when retransmitting the data block; and allocating a HS-PDSCH resource to the retransmitted data block according to the determined Eb/N0 required for each information bit. The method can raise the correct receiving probability of the retransmitted data block and improve the receiving performance of HSDPA data.