Method for handoff between an asynchronous CDMA base station and a synchronous CDMA base station

A method for determining a pilot channel PN offset of a pilot channel transmitted by a wireless base station, the method comprising the steps of:

• searching for a primary search code to acquire a search code slot timing, said primary search code aligned with a system time frame;
• correlating a PN sequence with a received pilot signal to acquire a PN frame timing using said search code slot timing;
• searching for at least one secondary search code burst aligned with said PN frame timing, said at least one secondary search code burst signifying said pilot channel PN offset;
• and
• comparing said at least one secondary search code burst to a set of codewords, each codeword representing a predetermined PN offset.

A method for determining a pilot channel PN offset of a pilot channel transmitted by a wireless base station, the method comprising the steps of:

• searching for a primary search code to acquire a search code slot timing, said primary search code aligned with a system time frame;
• searching for at least one secondary search code burst aligned with said search code slot timing;
• comparing said at least one secondary search code burst to a set of codewords, each codeword representing a predetermined PN offset group;
• and
• correlating a PN sequence with a received pilot signal at a plurality of PN offsets associated with said PN offset group to find said pilot channel PN offset and phase.

A method for determining a pilot channel PN offset of a pilot channel transmitted by a wireless base station, the method comprising the steps of:

• correlating a PN sequence with a received pilot signal to acquire a PN frame timing;
• searching for a primary search code using said PN frame timing to acquire a search code slot timing, said primary search code aligned with a system time frame;
• determining a PN offset group and system frame timing from a difference between said PN frame timing and said search code slot timing;
• searching for at least one secondary search code burst aligned with said search code slot timing;
• and
• comparing said at least one secondary search code burst to a set of codewords, each codeword representing a predetermined pilot channel PN offset and phase.