SE9801081D0 - Method of mobile terminal tracking - Google Patents
Method of mobile terminal trackingInfo
- Publication number
- SE9801081D0 SE9801081D0 SE9801081A SE9801081A SE9801081D0 SE 9801081 D0 SE9801081 D0 SE 9801081D0 SE 9801081 A SE9801081 A SE 9801081A SE 9801081 A SE9801081 A SE 9801081A SE 9801081 D0 SE9801081 D0 SE 9801081D0
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- signals
- cross correlation
- mobile
- mobile terminal
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/08—Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/04—Position of source determined by a plurality of spaced direction-finders
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a method of mobile terminal tracking, and more particularly, a method of keeping track of mobile terminals in a telecommunication system using narrow lobes for communciation between a base station (BS) and mobile stations. A first signal (a) is received from one mobile station in a main communication lobe while the base station receives a second signal (b) in another lobe. According to the invention the two signals (a, b) are compared by means of cross correlation to identify the second signal (b) as emanating from the same mobile station (A). Preferably, the signals include speech signals upon which the cross correlation is done. Thus, the invention comprises a method of identification of radio signals with different angular origin through the use of cross correlation between the unknown signal and a known signal, using the speech content of the signals only, without havign to inject any additional unique information in the signal.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9801081A SE9801081L (en) | 1998-03-30 | 1998-03-30 | Method of following a mobile terminal |
AU36335/99A AU3633599A (en) | 1998-03-30 | 1999-03-29 | Method of mobile terminal tracking |
PCT/SE1999/000498 WO1999050683A2 (en) | 1998-03-30 | 1999-03-29 | Method of mobile terminal tracking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9801081A SE9801081L (en) | 1998-03-30 | 1998-03-30 | Method of following a mobile terminal |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9801081D0 true SE9801081D0 (en) | 1998-03-30 |
SE9801081L SE9801081L (en) | 1999-10-01 |
Family
ID=20410763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9801081A SE9801081L (en) | 1998-03-30 | 1998-03-30 | Method of following a mobile terminal |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3633599A (en) |
SE (1) | SE9801081L (en) |
WO (1) | WO1999050683A2 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3793635A (en) * | 1972-12-08 | 1974-02-19 | Sierra Research Corp | Locating vehicles using their voice transmissions |
US5144322A (en) * | 1988-11-25 | 1992-09-01 | The United States Of America As Represented By The Secretary Of The Navy | Large-aperture sparse array detector system for multiple emitter location |
US5045858A (en) * | 1989-08-16 | 1991-09-03 | Cubic Defense Systems, Inc. | Sidelobe identification and discrimination system with signal multiplexer-separator |
US5260968A (en) * | 1992-06-23 | 1993-11-09 | The Regents Of The University Of California | Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering |
-
1998
- 1998-03-30 SE SE9801081A patent/SE9801081L/en not_active Application Discontinuation
-
1999
- 1999-03-29 WO PCT/SE1999/000498 patent/WO1999050683A2/en active Application Filing
- 1999-03-29 AU AU36335/99A patent/AU3633599A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
SE9801081L (en) | 1999-10-01 |
WO1999050683A2 (en) | 1999-10-07 |
AU3633599A (en) | 1999-10-18 |
WO1999050683A8 (en) | 2000-01-27 |
WO1999050683A3 (en) | 1999-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |