Patent ID: 8787315

Claim:
A method for handoff between Code Division Multiple Access (CDMA) base stations comprising: a target base station configuring a dedicated information unit bearing the PILOT_INC information in the handoff request ACK message, and bearing the PILOT_INC information into the dedicated information unit; the target base station informing a source base station of Pilot pseudo noise sequence offset index increment (PILOT_INC) information of the target base station through a handoff request ACK message after receiving a handoff request message sent by the source base station, wherein the PILOT_INC of the source base station and the PILOT_INC of the target base station is different; the source base station receiving the PILOT_INC information of the target base station, and according to the PILOT_INC information from the target base station to calculate pilot pseudo noise (PILOT_PN) corresponding to the pilot pseudo noise phase (PILOT_PN_PHASE) of the target base station reported by a user equipment that requests handoff between the base stations, thereby making the handoff between the base stations successful; wherein an equation for calculating the pilot pseudo noise is: PILOT_PN = ⌊ PILOT_PN ⁢ _PHASE + 32 × PILOT_INC 64 × PILOT_INC ⌋ × PILOT_INC , where PILOT_PN means the pilot pseudo noise, PILOT_PN_PHASE means the pilot pseudo noise phase, and “└ ┘” means rounding down calculation.