CA2442702A1 - Transmission method for cellular telephony mobile equipment's location data - Google Patents
Transmission method for cellular telephony mobile equipment's location data Download PDFInfo
- Publication number
- CA2442702A1 CA2442702A1 CA002442702A CA2442702A CA2442702A1 CA 2442702 A1 CA2442702 A1 CA 2442702A1 CA 002442702 A CA002442702 A CA 002442702A CA 2442702 A CA2442702 A CA 2442702A CA 2442702 A1 CA2442702 A1 CA 2442702A1
- Authority
- CA
- Canada
- Prior art keywords
- value
- arfcn
- bsic
- mobile equipment
- location data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract 10
- 238000000034 method Methods 0.000 title claims abstract 10
- 230000001413 cellular effect Effects 0.000 title claims abstract 8
- 238000005259 measurement Methods 0.000 claims 11
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
-
- 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
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
-
- 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
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0054—Transmission from base station to mobile station of actual mobile position, i.e. position calculation on base station
Abstract
Method for cellular telephony mobile equipment location data transmission, in which an application, preferably installed on the SIM card, measures the Base Transceiver Stations in the serving cell and the neighbouring cells, detecting, storing and transmitting respective information to a remote Service Centre by means of SMS messages, where a processing system, applying an appropriate algorithm and a Base Transceiver Stations geographic position database, computes the geographical position of the mobile equipment. Transmission is made using a compressed format which requires a very low number of SMS messages.
Claims (6)
1. Method for cellular telephony mobile equipment location data transmis-sion, in which an application, preferably installed on a SIM card contained in the mobile equipment, measures the Base Transceiver Stations in the serving cell and the neighbouring cells, detecting, storing and transmitting respective information to a remote Service Centre by means of SMS
messages, where a processing system, applying an appropriate algorithm and a Base Transceiver Stations geographic position database, computes the geographical position of the mobile equipment and informs the mobile equipment of said geographical position, if required, characterised in that said application preferably installed on the SIM card generates SMS
messages containing location data in compressed format, comprising specific data of each single message, specific data on the message set, specific data on measurements and specific data on the serving cell and the neighbouring cells monitored by the mobile equipment, the dimen-sions of some data depending on the results of the measurements made at the current instant and those obtained at an earlier time.
messages, where a processing system, applying an appropriate algorithm and a Base Transceiver Stations geographic position database, computes the geographical position of the mobile equipment and informs the mobile equipment of said geographical position, if required, characterised in that said application preferably installed on the SIM card generates SMS
messages containing location data in compressed format, comprising specific data of each single message, specific data on the message set, specific data on measurements and specific data on the serving cell and the neighbouring cells monitored by the mobile equipment, the dimen-sions of some data depending on the results of the measurements made at the current instant and those obtained at an earlier time.
2. Method for cellular telephony mobile equipment location data transmis-sion according to claim 1, characterised in that said location data in compressed format comprises:
for each message:
- the current SMS message order number;
- the total number of messages dedicated to location data transmis-sion;
consequently, in the message body:
- data dedicated to specific services, where relevant;
the number of said measurements;
for each measurement:
- RXLEV-FULL-SERVING-CELL, i.e. the intensity of the serving cell signal;
"Changed Tag", i.e. the label indicating which of the four data - Cell ID (serving cell identification), LAC (Local Area Code), MCC (Mobile Country Code) and MNC (Mobile Network Code), pertaining to the serving cell - have changed with respect to the previous measure-ment;
- MCC, if "Changed Tag" is higher than a first value;
- MNC, if "Changed Tag" is higher than the first value;
- LAC, if "Changed Tag" is higher than a second value;
- Serving Cell ID, if "Changed Tag" is higher than a third value;
- the number of monitored neighbouring cells;
for each neighbouring cell:
- the relative intensity of the signal computed on the bases of the previous measurement;
- "ARFCN-BSIC cache index", i.e. the index of the ARFCN-BSIC (channel order number-identification code) pair in an appropriate memory table;
- ARFCN (channel order number), if "ARFCN-BSIC cache index" has a first binary value;
- BSIC (identification code), if "ARFCN-BSIC cache index" has the first binary value;
absolute intensity of the signal, if the "neighbouring cell relative signal intensity" has a second binary value.
for each message:
- the current SMS message order number;
- the total number of messages dedicated to location data transmis-sion;
consequently, in the message body:
- data dedicated to specific services, where relevant;
the number of said measurements;
for each measurement:
- RXLEV-FULL-SERVING-CELL, i.e. the intensity of the serving cell signal;
"Changed Tag", i.e. the label indicating which of the four data - Cell ID (serving cell identification), LAC (Local Area Code), MCC (Mobile Country Code) and MNC (Mobile Network Code), pertaining to the serving cell - have changed with respect to the previous measure-ment;
- MCC, if "Changed Tag" is higher than a first value;
- MNC, if "Changed Tag" is higher than the first value;
- LAC, if "Changed Tag" is higher than a second value;
- Serving Cell ID, if "Changed Tag" is higher than a third value;
- the number of monitored neighbouring cells;
for each neighbouring cell:
- the relative intensity of the signal computed on the bases of the previous measurement;
- "ARFCN-BSIC cache index", i.e. the index of the ARFCN-BSIC (channel order number-identification code) pair in an appropriate memory table;
- ARFCN (channel order number), if "ARFCN-BSIC cache index" has a first binary value;
- BSIC (identification code), if "ARFCN-BSIC cache index" has the first binary value;
absolute intensity of the signal, if the "neighbouring cell relative signal intensity" has a second binary value.
3. Method for cellular telephony mobile equipment location data transmis-sion according to claim 2, characterised in that said location data have the following binary dimensions:
- current SMS message order number, 4 bits;
- total number of messages, 4 bits;
- data dedicated to a specific service, 1 or more bytes;
- measurement order number, 1 byte;
- RXLEV-FULL-SERVING-CELL, 6 bits;
"Changed Tag", 2 bits;
- MCC, 2 bytes;
- MNC, 1 byte;
- LAC, 2 bytes;
- serving Cell ID, 2 bytes;
- number of monitored neighbouring cells, 1 byte;
- neighbouring cell signal relative intensity, 5 bits;
- "ARFCN-BSIC cache index", 3 bits;
- ARFCN, 10 bits;
- BSIC, 6 bits;
- neighbouring cell signal absolute intensity, 8 bits.
- current SMS message order number, 4 bits;
- total number of messages, 4 bits;
- data dedicated to a specific service, 1 or more bytes;
- measurement order number, 1 byte;
- RXLEV-FULL-SERVING-CELL, 6 bits;
"Changed Tag", 2 bits;
- MCC, 2 bytes;
- MNC, 1 byte;
- LAC, 2 bytes;
- serving Cell ID, 2 bytes;
- number of monitored neighbouring cells, 1 byte;
- neighbouring cell signal relative intensity, 5 bits;
- "ARFCN-BSIC cache index", 3 bits;
- ARFCN, 10 bits;
- BSIC, 6 bits;
- neighbouring cell signal absolute intensity, 8 bits.
4. Method for cellular telephony mobile equipment location data transmis-sion according to claim 2 or 3, characterised in that whenever a new measurement is made, said application preferably installed on the SIM
card checks which of the four data (Cell ID, LAC, MCC and MNC) have changed with respect to the previous measurement and consequently sets the Changed Tag value, adding only the data which have changed to the body of the SMS message.
card checks which of the four data (Cell ID, LAC, MCC and MNC) have changed with respect to the previous measurement and consequently sets the Changed Tag value, adding only the data which have changed to the body of the SMS message.
5. Method for cellular telephony mobile equipment location data transmis-sion according to any of claims 2 to 4, characterise in that, in order to calculate said neighbouring cell signal relative intensity, said application preferably installed on the SIM card uses a 1-byte memory table for each monitored neighbouring cell and, during SMS coding, initialises a third binary value for each item in the table and carries out the following operations after each neighbouring cell signal intensity measurement:
- if the intensity of the current neighbouring cell is included in a first binary range with respect to the intensity of the previous measure-ment related to the neighbouring cell in the same position, the application only transmits the difference between the intensities and updates the table with the current intensity absolute value;
- otherwise the second binary value is assigned to the relative inten-sity the absolute current intensity value is sent in the subsequent byte and the table is updated with the same absolute value, a similar reversed procedure being carried out on Service Centre side for decoding.
- if the intensity of the current neighbouring cell is included in a first binary range with respect to the intensity of the previous measure-ment related to the neighbouring cell in the same position, the application only transmits the difference between the intensities and updates the table with the current intensity absolute value;
- otherwise the second binary value is assigned to the relative inten-sity the absolute current intensity value is sent in the subsequent byte and the table is updated with the same absolute value, a similar reversed procedure being carried out on Service Centre side for decoding.
6. Method for cellular telephony mobile equipment location data transmis-sion according to any of claims 2 to 5, characterised in that said applica-tion preferably installed on the SIM card uses a table formed by pairs of ARFCN-BSIC values which are filled progressively as new ARFCN-BSIC pair values are encountered to obtain said "ARFCN-BSIC cache index", and - if a value present in the table is encountered, the ARFCN-BSIC pair line order number or index containing the encountered value is used instead of the value itself;
- if an ARFCN-BSIC value which is not present in the table is encoun-tered and the table is full, the new value will be written over the oldest, according to FIFO mode, while, if the table is not full; "ARFCN-BSIC cache index" is set to the first binary value and the real value is added in the subsequent bytes, whereby adding the new value in the table, a similar reversed procedure being carried out on Service Centre side for decoding.
- if an ARFCN-BSIC value which is not present in the table is encoun-tered and the table is full, the new value will be written over the oldest, according to FIFO mode, while, if the table is not full; "ARFCN-BSIC cache index" is set to the first binary value and the real value is added in the subsequent bytes, whereby adding the new value in the table, a similar reversed procedure being carried out on Service Centre side for decoding.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2001TO000296A ITTO20010296A1 (en) | 2001-03-30 | 2001-03-30 | METHOD FOR THE TRANSMISSION OF LOCALIZATION DATA OF MOBILE APPARATUS FOR MOBILE TELEPHONY. |
| ITTO2001A000296 | 2001-03-30 | ||
| PCT/EP2002/003592 WO2002080606A1 (en) | 2001-03-30 | 2002-03-30 | Transmission method for cellular telephony mobile equipment's location data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2442702A1 true CA2442702A1 (en) | 2002-10-10 |
| CA2442702C CA2442702C (en) | 2012-06-19 |
Family
ID=11458740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2442702A Expired - Fee Related CA2442702C (en) | 2001-03-30 | 2002-03-30 | Transmission method for cellular telephony mobile equipment's location data |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US7110776B2 (en) |
| EP (1) | EP1374624B1 (en) |
| JP (1) | JP2005505952A (en) |
| CN (1) | CN1310562C (en) |
| AT (1) | ATE457620T1 (en) |
| BR (1) | BR0208583A (en) |
| CA (1) | CA2442702C (en) |
| DE (1) | DE60235296D1 (en) |
| IT (1) | ITTO20010296A1 (en) |
| WO (1) | WO2002080606A1 (en) |
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2001
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-
2002
- 2002-03-30 AT AT02732543T patent/ATE457620T1/en not_active IP Right Cessation
- 2002-03-30 DE DE60235296T patent/DE60235296D1/en not_active Expired - Lifetime
- 2002-03-30 BR BR0208583-6A patent/BR0208583A/en not_active Application Discontinuation
- 2002-03-30 CA CA2442702A patent/CA2442702C/en not_active Expired - Fee Related
- 2002-03-30 JP JP2002577475A patent/JP2005505952A/en active Pending
- 2002-03-30 CN CNB028077326A patent/CN1310562C/en not_active Expired - Fee Related
- 2002-03-30 WO PCT/EP2002/003592 patent/WO2002080606A1/en active Application Filing
- 2002-03-30 EP EP02732543A patent/EP1374624B1/en not_active Expired - Lifetime
- 2002-03-30 US US10/473,616 patent/US7110776B2/en not_active Expired - Fee Related
-
2006
- 2006-08-16 US US11/505,226 patent/US7751831B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1374624A1 (en) | 2004-01-02 |
| EP1374624B1 (en) | 2010-02-10 |
| US20060276203A1 (en) | 2006-12-07 |
| CN1310562C (en) | 2007-04-11 |
| ITTO20010296A0 (en) | 2001-03-30 |
| ATE457620T1 (en) | 2010-02-15 |
| US7751831B2 (en) | 2010-07-06 |
| BR0208583A (en) | 2004-03-30 |
| US20040106413A1 (en) | 2004-06-03 |
| WO2002080606A1 (en) | 2002-10-10 |
| US7110776B2 (en) | 2006-09-19 |
| JP2005505952A (en) | 2005-02-24 |
| ITTO20010296A1 (en) | 2002-09-30 |
| CN1509581A (en) | 2004-06-30 |
| CA2442702C (en) | 2012-06-19 |
| DE60235296D1 (en) | 2010-03-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20190401 |