Positioning systems and methods for determining the location of a mobile communication device
First Claim
Patent Images
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, the determined cell being served by a serving base station connected to a set of radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the serving base station via a cable;
determining a cable length value representative of the length of a cable connecting the serving base station to a radio head serving the MCD; and
using the determined cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD to obtain location information for the MCD, whereinthe step of determining the cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD comprises;
a positioning node of the positioning system receiving a message transmitted by the serving base station, the message comprising a set of one or more parameters enabling the positioning node to calculate a cable loss value (L_cable) of the cable connecting the serving base station to the radio head serving the MCD, the set of parameters comprising one or more of;
i) a power value representative of the power of an uplink signal transmitted by the MCD as measured by the serving base station (P_ul_mcd_du) and ii) a signal to noise and interference ratio (SINR) as measured by the serving base station;
the positioning node using the received set of parameters to calculate the cable loss value of the cable connecting the serving base station to the radio head serving the MCD; and
the positioning node determining the cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD using the calculated cable loss value.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
26 Claims
-
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, the determined cell being served by a serving base station connected to a set of radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the serving base station via a cable; determining a cable length value representative of the length of a cable connecting the serving base station to a radio head serving the MCD; and using the determined cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD to obtain location information for the MCD, wherein the step of determining the cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD comprises; a positioning node of the positioning system receiving a message transmitted by the serving base station, the message comprising a set of one or more parameters enabling the positioning node to calculate a cable loss value (L_cable) of the cable connecting the serving base station to the radio head serving the MCD, the set of parameters comprising one or more of;
i) a power value representative of the power of an uplink signal transmitted by the MCD as measured by the serving base station (P_ul_mcd_du) and ii) a signal to noise and interference ratio (SINR) as measured by the serving base station;the positioning node using the received set of parameters to calculate the cable loss value of the cable connecting the serving base station to the radio head serving the MCD; and the positioning node determining the cable length value representing the length of the cable connecting the serving base station to the radio head serving the MCD using the calculated cable loss value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A positioning system for determining a location of a mobile communication device (MCD), the positioning system being adapted to:
-
determine a cell in which the MCD is located; if the determined cell is being served by a serving base station connected to a set of radio heads via a set of corresponding cables, the positioning system is further adapted to; determine a cable length value representative of the length of a cable connecting the serving base station to a radio head serving the MCD; and use the determined cable length value to obtain location information for the MCD, wherein the positioning system is adapted to determine the cable length value by performing a process comprising; receiving a message transmitted by the serving base station, the message comprising a set of one or more parameters enabling the positioning node to calculate a cable loss value (L_cable) of the cable connecting the serving base station to the radio head serving the MCD, the set of parameters comprising one or more of;
i) a power value representative of the power of an uplink signal transmitted by the MCD as measured by the serving base station (P_ul_mcd_du) and ii) a signal to noise and interference ratio (SINR) as measured by the serving base station;using the received set of parameters to calculate the cable loss value of the cable connecting the serving base station to the radio head serving the MCD; and determining the cable length value using the calculated cable loss value. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A method performed by a positioning system for determining the location of a mobile communication device (MCD), the method comprising:
-
determining a cell in which the MCD is located, the determined cell being served by a serving base station connected to a set of two or more radio heads, wherein each one of the radio heads included in the set of radio heads is connected to the serving base station via a cable having a length; calculating, based on one or more signal measurements, a cable loss value (L_cable) indicative of the length of a cable connecting the serving base station to a radio head serving the MCD; using the calculated cable loss value, selecting a radio head identifier from a plurality of radio head identifiers, said selected radio head identifier identifying one of said radio heads included in said set of two or more radio heads; using the selected radio head identifier, obtaining location information for the MCD.
-
Specification