Positioning Systems and Methods For Determining The Location of a Mobile Communication Device

摘要

A localization approach based on cable length detection. In one aspect, a method performed by a positioning system for determining the location of a mobile communication device (MCD) is provided. In some embodiments, the method includes the positioning system determining a cable length value representative of the length of the cable connecting a base station to a radio head serving the MCD. The positioning system then determines a location of the MCD based on the determined cable length.

主权项

1. A method performed by a positioning system for determining a location of a mobile communication device (MCD), the method comprising:
determining a cell in which the MCD is located, said determined cell being served by a base station connected to a set of radio heads, wherein each one of the radio heads included in said set of radio heads is connected to the base station via a cable, and one of said radio heads included in said set is serving the MCD; determining a cable length value representative of the length of the cable connecting the base station to said radio head serving the MCD, wherein determining the cable length value comprises calculating a cable loss value (L_cable) representative of signal attenuation caused by the cable connecting the serving radio head to the base station by
determining an uplink path loss value (L_ul) representative of the uplink path loss between the MCD and the serving radio head,receiving a power measurement report comprising an uplink transmit power value (P_ul_mcd) indicating the transmit power of an uplink signal transmitted by the MCD,obtaining an amplifier gain value (G_amp) representing the gain of an amplifier, andcalculating the L cable using P_ul_mcd, L_ul, and G_amp; and determining the location of the MCD based on the determined cable length value.