WO2001099444B1 - Rf base station data repeater - Google Patents

Rf base station data repeater

Info

Publication number
WO2001099444B1
WO2001099444B1 PCT/US2001/018379 US0118379W WO0199444B1 WO 2001099444 B1 WO2001099444 B1 WO 2001099444B1 US 0118379 W US0118379 W US 0118379W WO 0199444 B1 WO0199444 B1 WO 0199444B1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
antenna
data
diplexed
diplexed antenna
Prior art date
Application number
PCT/US2001/018379
Other languages
French (fr)
Other versions
WO2001099444A1 (en
Inventor
Randolph L Durrant
Logan Scott
John K Reece
Original Assignee
Xircom Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xircom Inc filed Critical Xircom Inc
Priority to GB0300620A priority Critical patent/GB2381705A/en
Priority to AU2001266747A priority patent/AU2001266747A1/en
Priority to JP2002504163A priority patent/JP4238027B2/en
Publication of WO2001099444A1 publication Critical patent/WO2001099444A1/en
Publication of WO2001099444B1 publication Critical patent/WO2001099444B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • 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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • 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
    • G01S5/0273—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 using multipath or indirect path propagation signals in position determination
    • 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
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow

Abstract

A data repeater system (20) is added to a wireless communications network which increases user data rates at the periphery of the cellular coverage area by boosting the downlink (base station to mobile user) signal and uplink (mobile user to base station) signal. The data repeater system (20) includes a signal tagging means (61) which adds a unique electronic signature to the repeated signal such that position determination errors due to a non-line of sight propagation path can be corrected. The repeated signal is received and processed with a location measurement unit to determine the time of arrival and to extract the signal tag of the repeated signal. The time of arrival measurement and recovered signal tag are then processed at a mobile location center to determine the true position of the transmitter.

Claims

AMENDED CLAIMS[received by the International Bureau on 15 January 2002 (15.01.02); original claims 1, 7 and 17 amended; new claims 19-23 added; remaining claims unchanged (5 pages)]
1. (Amended) An RF data repeater system comprising: a first diplexed antenna directed in the direction of a mobile unit; a second diplexed antenna; a PN sequence generator electronically connected between the first diplexed antenna and the second diplexed antenna; a data signal routed through the first diplexed antenna, the PN sequence generator and the second diplexed antenna; and said PN sequence generator tagging said data signal with a non-interfering direct sequence spread spectrum signal.
2. The RF data repeater system of claim 1 further comprising a modulator electronically connected between the first diplexed antenna and the second diplexed antenna, and electronically connected to the PN sequence generator.
3. The RF data repeater system of claim 2 wherein said modulator performing phase modulation on said data signal.
4. The RF data repeater system of claim 2 wherein said modulator performing amplitude modulation on said data signal.
5. The RF data repeater system of claim 1 further comprising a filter/diplexer unit electronically connected to said first diplexed antenna, said filter/diplexer unit filters and separates the data signal according to its frequency.
6. The RF data repeater system of claim 1 further comprising at least one amplifier electronically connected to said first diplexed antenna to amplify the signal level of said data signal.
7. (Amended) An RF data repeater system comprising:
12 a first diplexed antenna directed in the direction of a mobile unit, a second diplexed antenna directed in the direction of a base station, a first PN sequence generator electronically connected between the first diplexed antenna and the second diplexed antenna, a second PN sequence generator electronically connected between the second diplexed antenna and the first diplexed antenna, an uplink data signal routed through the first diplexed antenna, the first PN sequence generator and the second diplexed antenna, said first PN sequence generator tagging said uplink data signal with a first non- interfering direct sequence spread spectrum signal, and a downlink data signal routed through the second diplexed antenna, the second PN sequence generator and the first diplexed antenna, said second PN sequence generator tagging said dow nlink data signal with a second non-mterfermg direct sequence spread spectrum signal
8 The RF data repeater system of claim 7 further composing a first modulator electronically connected between the first diplexed antenna and the second diplexed antenna, and electronically connected to the first PN sequence generator
9 The RF data repeater system of claim 8 wherein said first modulator performing phase modulation on said uplink data signal
10 The RF data repeater system of claim 8 wherein said first modulator performing amplitude modulation on said uplink data signal
11 The RF data repeater system of claim 7 further compnsing a second modulator electronically connected between the second diplexed antenna and the first diplexed antenna, and electronically connected to the second PN sequence generator
12 The RF data repeater system of claim 1 1 wherein said second modulator performing phase modulation on said downlink data signal
13
13. The RF data repeater system of claim 1 1 wherein said second modulator performing amplitude modulation on said downlink data signal
14 The RF data repeater system of claim 7 further compnsing a filter/diplexer unit electronically connected to said first diplexed antenna, said filter/diplexer unit filters and separates the downlink data signal and uplink data signal according to its frequencies
15. The RF data repeater system of claim 14 further compnsing at least one amplifier electronically connected to said first diplexed antenna to amplify the signal level of said uplink data signal
16. The RF data repeater system of claim 14 further compnsing at least one amplifier electronically connected to said second diplexed antenna to amplify the signal level of said downlink data signal.
17 (Amended) A position determination system compnsing a) at least one data repeater, said data repeater further compnsing a first diplexed antenna, a second diplexed antenna, a PN sequence generator electronically connected between the first diplexed antenna and the second diplexed antenna, a data signal routed through the first diplexed antenna, the PN sequence generator and the second diplexed antenna, and said PN sequence generator tagging said data signal with a non-mterfenng direct sequence spread spectrum signal tag, b) at least one mobile unit; c) a base station, said base station further compnsing a location measurement unit for determining time of arnval of said data signal at the base station,
14 said location measurement unit further compnses a PN code correlator for extracting said signal tag from said data signal, and d) a mobile location center for processing said time of arrival measurement and said signal tag into a position estimate of said mobile unit, said mobile location center further compnses a database which stores geographical coordinates of said repeater
18 The position determination system of claim 17 wherein said position estimate is routed to an emergency response center
19 A method of communication, compnsing providing a base station, a mobile unit, and a data repeater all located m a cell of a wireless network, receiving at the data repeater a signal from either the base station or the mobile unit, tagging the received signal with an electronic signature identifying the signal repeater, and transmitting the tagged signal from the signal repeater
20 The method of claim 19, wherein the data repeater reception compnses receiving a downlink signal from the base station and the tagged signal transmission compnses transmitting a tagged downlink signal to the mobile unit
21 The method of claim 19, wherein the data repeater reception compnses receiving an uplink signal from the mobile unit and the tagged signal transmission compnses transmitting a tagged uplink signal to the base station
15
22. A signal repeater, comprising: a first antenna for communicating with a base station; a second antenna for communicating with a mobile unit; a first signal path for coupling signals received on the second antenna to the first antenna; a second signal path for coupling signals received on the first antenna to the second antenna; and a first modulator inserted in the first signal path for tagging the signals coupled to the first antenna with an electronic signature identifying the signal repeater.
23. The signal repeater of claim 22, further comprising a second modulator inserted in the second signal path for tagging the signals coupled to the second antenna with an electronic signature identifying the signal repeater.
16
PCT/US2001/018379 2000-06-19 2001-06-06 Rf base station data repeater WO2001099444A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0300620A GB2381705A (en) 2000-06-19 2001-06-06 RF base station data repeater
AU2001266747A AU2001266747A1 (en) 2000-06-19 2001-06-06 Rf base station data repeater
JP2002504163A JP4238027B2 (en) 2000-06-19 2001-06-06 RF base station data repeater

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/596,653 US6501955B1 (en) 2000-06-19 2000-06-19 RF signal repeater, mobile unit position determination system using the RF signal repeater, and method of communication therefor
US09/596,653 2000-06-19

Publications (2)

Publication Number Publication Date
WO2001099444A1 WO2001099444A1 (en) 2001-12-27
WO2001099444B1 true WO2001099444B1 (en) 2002-03-21

Family

ID=24388141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/018379 WO2001099444A1 (en) 2000-06-19 2001-06-06 Rf base station data repeater

Country Status (7)

Country Link
US (3) US6501955B1 (en)
JP (1) JP4238027B2 (en)
CN (1) CN100499904C (en)
AU (1) AU2001266747A1 (en)
GB (1) GB2381705A (en)
MY (1) MY126128A (en)
WO (1) WO2001099444A1 (en)

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US6839539B2 (en) 2005-01-04
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US20020155838A1 (en) 2002-10-24
US6501955B1 (en) 2002-12-31
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CN1437828A (en) 2003-08-20
US20040097190A1 (en) 2004-05-20

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