Method for realizing wireless terminal positioning
A wireless terminal and wireless signal technology, applied in the field of wireless terminal positioning based on enhanced cell positioning technology, can solve the problems of reducing positioning accuracy and increasing UE positioning deviation, and achieve the effect of improving accuracy
Active Publication Date: 2006-09-27
XFUSION DIGITAL TECH CO LTD
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[0020] From the above method, it can be seen that the existing CELL_ID+RTT positioning method always locates the UE with the base station as the center, and when the UE exceeds the coverage of the base station, due to the existence of the repeater, the path through which the wireless signal passes must be from From the UE to the repeater, and then from the repeater to the base station, it can still be considered that the UE is within the jurisdiction of the base station. In this way, according to the above existing method, the UE positioning result obtained according to the calculated d is: the UE is in With the base station as the center and d as the radius of the arc, and the arc is outside the coverage of the base station, this increases the positioning deviation of the UE and reduces the positioning accuracy
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[0037] The core idea of the present invention is: RNC calculates the distance from UE to NodeB antenna according to the measurement report, and judges whether the distance is greater than the coverage radius of NodeB. The distance between the station antenna, and construct UE location information according to the distance from the UE to the repeater antenna, and then report the location information to the CN; if it is less than that, that is, the UE is within the coverage of the NodeB, then the RNC constructs the UE according to the distance from the UE to the NodeB antenna After receiving the location information, the location information is reported to the CN.
[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.
[0039] image 3 It is a flow chart of the wireless terminal positioning me...
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The invention relates to a method for realizing wireless terminal positioning, which comprises: RNC according to the measuring report calculates out the distance between UE and NodeB antenna and judges if said distance is larger than the NodeB covering radius, if it is smaller, as the UE is inside the NodeB covering area, RNC according to said distance builds the UE position information to report it to the CN; if it is larger as UE is outside the covering area of NodeB, RNC calculates the distance between the UE and the direct station antenna according to the measuring report, and builds the UE position information to report it to the CN. The invention can solve the problem of present CELL_ID+RTT positioning method with high error when the UE is outside the NodeB covering area, to improve the accuracy of UE positioning.
Description
technical field [0001] The invention relates to wireless positioning technology, in particular to a method for realizing wireless terminal positioning based on enhanced cell positioning (CELL_ID+RTT) technology. Background technique [0002] The positioning service is an important service in the wireless cellular communication system. There are three main positioning technologies in the third generation wireless communication system (3G): Assisted Global Positioning System (A-GPS) positioning, observed time difference of arrival (OTDOA) positioning and CELL_ID+RTT positioning. [0003] A-GPS positioning requires a built-in GPS receiver in the wireless terminal (UE), and requires the wireless terminal to be able to face three satellites at the same time, cooperate with the network to complete the positioning, and the positioning accuracy is the highest; OTDOA positioning is by measuring the distance between the wireless terminal and the three base stations. The hyperbolic po...
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IPC IPC(8): H04Q7/38G01S5/02H04W64/00
Inventor李光辉
OwnerXFUSION DIGITAL TECH CO LTD