Patent ID: 8446837

Claim:
A data filtering method for removing invalid data in a 3G data stream, the data filtering method comprising the steps of: (a) receiving the 3G data stream continually from a modem; (b) determining whether the 3G data stream includes at least one transmission unit, the at least one transmission unit corresponding to at least one 3G-324M data unit, wherein if it is determined that the 3G data stream includes at least one 3G-324M data unit wherein each of the at least one 3G-324 data unit includes a plurality of bytes, proceed to step (c), otherwise, return to step (a); (c) determining whether the 3G data stream includes invalid data wherein the invalid data corresponds to data appearing beyond three bytes each byte having a value of zero in the at least one 3G-324M data unit; (d) marking the invalid data according to a predetermined protocol; and (e) removing the marked invalid data from the 3G data stream.