Method for network side to transmit loop time information, device and application
A time information and network-side technology, applied in wireless communication, transmission monitoring, electrical components, etc., can solve problems such as inaccurate UE positioning
Active Publication Date: 2010-09-08
HUAWEI TECH CO LTD
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Problems solved by technology
The purpose of the present invention is to provide an RTT message transmission method and its application in user terminal positioning, so as to solve the technical problem of inaccurate UE positioning caused by the existing RTT message delivery method in a wide-coverage cell
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The invention discloses a method of the release of round trip time of the network side, and the system signaling of the network side comprises a system RTT cell; the network side obtains the round trip time of RTT information; the system RTT cell is used for filling the RTT information, and the filling value range of the system RTT cell is applicable to the mapping threshold range extensively covering the subdistrict; finally the signaling that comprises RTT cell is released. The invention also discloses an appliance of releasing the method based on the round trip time information. The technic proposal disclosed by the invention can support the accurate narration of the round trip time extensively covering the subdistrict, and can assist the mobile station with the accurate positioning.
Description
technical field The present invention relates to the field of wireless communication, in particular to a method, device and application for sending loopback time information from a network side. Background technique In the UE (User Terminal)-based OTDOA (Observed Time Difference Of Arrival) mode, the UE measures and performs position calculation, so some additional information (such as the measured base station position) is required for position calculation, which information provided by the network side. In order to reduce the error of the UE positioning result, the network side needs to provide the UE with as many OTDOA measurements and auxiliary data as possible related to it. The main auxiliary data is RTT (Round trip time), and the network side is Whether the RTT provided by the UE is accurate or not is crucial to the accuracy of UE positioning. The definition of RTT is: RTT=T RX -T TX , where T TX Refers to the starting time of the downlink DPCH (Dedicated Physic...
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IPC IPC(8): H04W64/00H04B17/00H04W24/00
Inventor 尹丽燕
Owner HUAWEI TECH CO LTD