The invention discloses a method and a
system for collecting positioning auxiliary information. A serving
base station collects the positioning auxiliary information through an interactive signaling message via an X2 interface, wherein the mutual signaling message can be an expanding X2 interface building request / response message, or an expanding
base station configuration update message or a special positioning auxiliary message request / response message. The interactive signaling message carries an auxiliary message with a geographical position message to reliably collect the positioning auxiliary information. In the mode of auxiliary positioning by UE (
User Equipment) or the mode of judgment positioning by UE, the invention can obtain the auxiliary messages of a candidate
cell required to be measured by the UE, such as the geographical position message, the
longitude message and the
latitude message of the candidate
cell. After collected by the servicing
base station, the messages are reported to an E-SMLC (Serving
Mobile Location Center) to realize OTDOA (Observed
Time Difference Of Arrival) positioning judgment, thereby more precisely carrying out UE positioning.