INDOOR LOCATING MOBILE TERMINALS IN A MOBILE CELLULAR TELECOMMUNICATION NETWORK

摘要

A process is described tor indoor location of a mobile cellular terminal ( 3 ) equipped with a transceiver apparatus capable of communicating with a mobile cellular telecommunication network ( 2). through a system comprising at least one transmitter apparatus (5a-5g), present inside an indoor environment (6;A-G). and at least one of said mobile terminals (3) equipped with at least one receiver apparatus (4). capable of receiving data transmitted by at least one of said transmitter apparatuses (5a-5g) present inside said indoor environment (6:A-G) and of relaying them to a locating station (7) through said transceiver apparatus over said mobile cellular telecommunication network (2 ). comprising the following steps, wherein: a! least one of said transm itter apparatuses (5a-5g) present, in said indoor environment (<>;A-G) transmits at least one identi fier < ID;-) of said indoor environment (6:A-G) where said transmitter apparatus (5a-5g) is situated; said receiver apparatus (4) of said mobile terminal (3) receives said identi fier (1D;-) transmitted by at least one of said transm itter apparatuses (5a- 5g): said transceiver apparatus of said mobile terminal (3 ) relays said identifier (IL>.- ) or data associated therewith to said locating station (7) through said mobile cellular telecommunication network (2); and said locating station (7) locates said mobile terminal (3 ) depending on said identifier ( ll.):-) or said data associated therewith received from said mobile terminal (3 ) through said mobile cel lular telecommunication network (2), by associating said identifier ( I D:-) with the position of said indoor environment (6;A-G) after consulting an existing database (<>) aeeessible to said locating station (7). said database (9) comprising information associating said identifier { ID; -) with data relating to the position of said indoor environment (6:A-G) where the transmitter ( 5a-5g) that transmitted it is situated, and wherein said identi fier ( I D) is associated with at least one fixed communication terminal (8) present inside said indoor environment (6). and wherein said data relating to the position of said indoor environment comprise a geographic address ( LOCATION) of said fixed communication terminal (8).