CA2353539A1 - Provisioning of gps assistance data in a wcdma network - Google Patents
Provisioning of gps assistance data in a wcdma network Download PDFInfo
- Publication number
- CA2353539A1 CA2353539A1 CA002353539A CA2353539A CA2353539A1 CA 2353539 A1 CA2353539 A1 CA 2353539A1 CA 002353539 A CA002353539 A CA 002353539A CA 2353539 A CA2353539 A CA 2353539A CA 2353539 A1 CA2353539 A1 CA 2353539A1
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- Prior art keywords
- user terminal
- mobile user
- assistance data
- network
- positioning
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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
-
- 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/07—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
- G01S19/071—DGPS corrections
-
- 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
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A method of provisioning differential GPS (DGPS) assistance data (58, 59) ov er a WCDMA wireless communication network (10) to facilitate positioning of mobile communication devices (12, 20). The method comprises providing differential GPS assistance data over a dedicated physical data channel (DPDCH) and/or a dedicated physical control channel (DPCCH). The mobile communication terminal has an integrated GPS receiver and can comprise of cellular or PCS telephony handsets, a mobile computer, PDAs, etc. The presen t invention facilitates a mechanism for providing the DGPS assistance data to achieve positioning of the mobile communication device accuracy down to abou t 5 meters.
Description
_...."~
t PROVISIONING OF GPS ASSISTANCE DATA
IN A WCDMA NETWORS
FIELD OF THE INVENTION
The present invention is generally related to wireless communication networks, and more particularly to a wideband code division multiple access (WCDMA) third generation (3G) network for mobile positioning.
1 o BACgGROUND OF THE INVENTION
Wireless communication networks including fixed wireless and cellular-type mobile communications networks continue to evolve. There are several available technologies for providing wireless communications including CDMA, TDMA, GSM, AMPS
and D-A1VIPS. These networks continue to be deployed throughout the world. Many equipment suppliers throughout the world currently manufacture these various systems and typically work through standards groups to ensure commonality and interoperability of the various networks.
t PROVISIONING OF GPS ASSISTANCE DATA
IN A WCDMA NETWORS
FIELD OF THE INVENTION
The present invention is generally related to wireless communication networks, and more particularly to a wideband code division multiple access (WCDMA) third generation (3G) network for mobile positioning.
1 o BACgGROUND OF THE INVENTION
Wireless communication networks including fixed wireless and cellular-type mobile communications networks continue to evolve. There are several available technologies for providing wireless communications including CDMA, TDMA, GSM, AMPS
and D-A1VIPS. These networks continue to be deployed throughout the world. Many equipment suppliers throughout the world currently manufacture these various systems and typically work through standards groups to ensure commonality and interoperability of the various networks.
2 0 As wireless communications networks move into the next century, a new type of wireless network is evolving currently known as wideband code division multiple access (WCDMA} based third r.r :-"4r~V-~~' .'. .~ ~ ~...-generation'(3G) networks. These third generation wireless systems are slowly becoming a reality for FPLMNs.
There is a desire to provide positioni_n.g of a mobile subscriber within a wireless network. Current implementations are based on tinge difference of arrival (TDOA) techniques, which give an accuracy of position down to about 18 meters. An example of such implementations is described in WO 96 15636 A
~G~Ay~S~g,S CQMMUNICATIONS, INC.) published 23 May 1996 entitled "Locating system and Method Using a Mobile Communications Networl~' (hereinafter "WO 96 15636). WO 96 15636 describes a differential positioning system using a satellite-based radio navigation system, such as NAVSTAR positioning system to permit a mobile unit to determine its position. The positioning techniques of WO 96 15636 involves measuring the propagation times of position signals from the satellites. Also, with WO 96 15636, a set of reference position receivers generate correction date for improving the position fig of the mobile unit.
While the accuracy of prior positioning techniques, such as the one described in WO 9615636, is adequate for several features and can be implemented in today's networks, there is required more accurate positioning of a mobile subscriber. Specifically, the differential positioning system of WO 9615636 and other similar c~
~y".,-,,cr ~',y~.~
:~~:~'d 9 e.. ~. -v c positioning techniques are inadequate for today's modern 3G
wireless network. An improved mobile-based positioning solution will also reduce the need for extra capacity in the network required and used for positioning. Development is still currently undervPay with techniques being deliberated by standards committees to determine how best achieve improved resolution of positioning of a mobile station, especially in WCDMA based 3G networks.
g~l~lgy OF THE INVENTION
The present invention achieves technical advantages as a method of provisioning differential GPS assistance data in a WCDMA network over the dedicated physical data channel (DPDC~, and/or the dedicated physical control channel (DPCC~.
By providing differential GPS assistance data over these channels, mobile stations having a GPS receiver within a WCDMA based 3G
network can accurately determine position of the mobile station to an accuracy of about 5 meters.
The mobile user terminal may comprise of a mobile cellular-type mobile station, such as a PCS or cellular phone, but may also 2 0 include a computer, or a PDA.
The mobile communication terminal according to the present invention includes mechanisms for exchanging wireless . .
communications with a serving wireYess.communication network, and in addition, means to receive clifferential GPS assistance data over a dedicated physical channel, such as the DPDCH or DPCCH.
The mobile communication terminal further has circuitry and s software in a GPS receiver to determine a position of the mobile communication terminal as a fun~on of this GPS assistance data with improved resolution.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a block diagram of a wireless communication network including a WCDMA wireless network for third generation systems;
Figure 2 is a flow diagram of a method of the present invention providing differential GPS (DGPS) assistance data over the DPDCH or DPCCH on a WCDMA. carrier to support differential GPS positioning of a mobile station in the network;
Figure 3 is a block diagram of one format for providing differential GPS assistance data over the DPCCH; and Figure 4 is a block diagram of an alternative embodiment of 2 o the present invention providing differential GPS assistance data over the DPDCH. ~ - -~~ ~;~~r. ~e~~' a ~~~e~..~ . =:s~ Ca DESCRIPTION OF THE PREFTRI~ED EMBODIMENT
Figure 1 illustrates a block diagram. of a communication network 10 according to the preferred embodiment of the present invention. Communication network 10 preferably comprises a wireless telephony network seen to include an originating mobile station 12 coupled by an RF communication link to a servicing WCDMA originating network 14. The originating mobile station 12 is preferably a wireless communication device comprising a wireless mobile station. The originating WCDMA network 14 is seen to be 1 o coupled to a transit network or communication link 16, which may comprise a public switched telephone network (PSTN), but could also comprise of other networks including an optical network if desired. The transit network 16 interfaces and communicates electrical signals including digitized voice calls between originating network 14 anal a terminating network 18. Terminating network 18 may be the same as, or different than, the originating network 14, and map comprise of AMPS, D-AMPS, TDMA, GSM and IS-95 networks. For purposes of illustration, terminating network 18 is depicted as a WCDMA network. Terminating network 18 is coupled 2 0 to and services via an RF link a terminating mobile station 20, which may comprise of a fixed or mobile station such as a wireless ~ , cellular or PCS subscriber. The wireless stations and networks may ~N~E!'!!J~~ !~c s have cvdecs to provide encoding and decoding of digital signals communicated over the transit network I6.
The originating WCD~ network 14 is seen to include a base transceiver station (BTS) 30 serving via a radio frequency (R~ link s the originating mobile or feed station 12. Each BTS 30 services multiple stations 12, although only one is shown for purposes of illustration and clarity. Originating network 14 is further seen to include a radio network controller (RNC) 32 and a network switching system (NSS) 34. The BTS and RNC are sometimes 1o collectively referred to as a base switching station (BSS). RNC 32 interfaces voice calls between multiple BTSs 30 and NSS 34, wherein RNC 32 typically serves multiple BTSs 30, although only one is shown for. purposes of illustrating the present invention.
Similarly, NSS 34 services multiple RNCs 32, although only one is 15 shown for purposes of illustrating the present invention. NSS 34 includes a home location register (HLR), a mobile positioning node, and a visitor location register (VLR.) which. includes and stores various information of the stations 12 currently being served by the originating network 14.
2 o Terminating network 18 is seen to include a BTS 40 serving the terminating station 20, and typically serves multiple stations ~ , 20. Terminating network 18 is further seen to include a RNC 42 _. :.r,_~
:=~~s~.aw:~ __ _.~ ..._ E
and NSS 44. Terminating network I8 may operate according to the same operating protocol as originating network 14, i.e., both are WCDMA networks, or, the terminating network 18 may be different from the originating network 14, i.e., the originating network is WCDMA anal the terminating network may be based on AMPS, D-AMPS, GSM, TDMA or IS-9~ protocols. NSS 44 includes a I3LR., and a VLR for maintaining a register of information for all stations 20 currently being served by the terminating network 18. A
reference GPS receiver 46 provides GPS assistance data positioning information to the respective network 14 and network I8, for use by originating mobile station 12 according to the present invention.
Transit network 16 is preferably a PSTN. Originating NSS
34 and terminating NSS 44 ezchange digitized voice data thereover, which are preferably encoded in pulse code modulation {PCM) s5 format, and transmitted at about 64 kbps. Although PCM is a preferred encoding format, other encoding formats are available according to the present invention. Likewise, other transfer speeds other that 64 kbps are also contemplated by the present invention.
Generally, the digitized voice data transferred over transit network ' 20 16 can be in any format which is compatible and supported by both the originating network 14 and the terminating network 18. ~ , Referring now to Figure 2, there is illustrated at 50 a .~e~r~~~n~~ ~,.~"~
_.~.~, R 13-03-2001 ~"~H~ °ri , , ,;1~ ~ ~ - ~ . ' ~ , ~ ~ ° '; ~ o '' Z'~8 ~7 ~~ v v , a a ~4~ 89 ' U S 009926283 ,,a uu. u.r rnessrage flow diagram for providing differential GPS (DGPS) assistance data from reference GPS receiver 46 via transit network 16 to the user terminal 12. As illustrated at 52, the DGPS assistance data is continuously provided by a node of the network t 0, such as the BTS 32, over the air interface to the user terminal 12 over t0 either the dedicated physical data channel (DPDCH) or the dedicated physical controi channel (DPCCH).
At 54, there is illustrated a Poskioning Request message sent by the RNC/Core network 32 to initiate positioning of user terminal 12_ This message is responsively forwarded by the BTSlnode B 30 to the user terminal 12 as Positioning Request message 5f3.
At 58, the user terminal 12 has an integrated GPS receiver that processes the DGPS assistance data provided by the network 10 to determine the position or aid in the positioning of user terminal 12 using GPS satellite information according to techniques that are well known throughout the industry. The differential GPS
assistance data can be procasRad to speed the search of a priori information from the GPS satellites (not shown) to determine positioning of the user terminal 12 to a resolution of about 5 meters. The current position of the user terminal 12 is provided in Positioning Response message 58 by user terminal 12 to the BTSInode 8 30, which moasago is forwarded in the Positioning ;~nrlE~lGE::~ ~~E-_.~", c 13-03-2001 ~~~n~~~EN U l : 1:3- 3- 1 : 1 : UU : 972 138 7013-~ +48 H8 ' ~t uu~wrr m ~~~~~ t~ ~~°y°~ ~ ~ .~r< c..ru rutv 'US009926283 Response message 59 to tiae RNC/Core network 32. The DGPS assistance data is then continued to be provided over the air interface on the DPOGH or DPCCN as desired for future use.
The user terminal t2 can comprise of many mobile oornmunications devices including PCS and cellular type mobile phones, computers provided with suitable remote access circuitry, and PDAs. Thus, limitation to the particular type of mobile user terminal 12 is not to be inferred in the present invention. Rather, the present invention is directed to providing the particular type of differential GPS
assistance data over either or both the DPaCH or DPCCH on a WCDMA carrier to provide t 5 pcasiliurvinc~ au;urr~cy down to about 5 meters. The Integrated dlfferenbal GPS
receiver at the WCDMA end user terminal can be integral to the equipment, such as embedded within the handset of the mobile station, or an attachment. In addition, an external PC or PDA can be provided with an integrated differential GPS
receiver, and be used as a very accurate map tool, for fleet management etc.
70 Referring now to Figure 3, there is shown a block diagram of one communication fiormat providing DGPS assistance data over the dedicated physical control channel (DPCCH) to mobile user 12. As illustrated, one data packet 60 of the DPCCH is seen to comprise a slot having a time frame of about 0.625 milliseconds. This data .~vIE~IGEJ ~~E--packet 60 may comprise a header comprising an N number of bits comprising the Pilot, a Transport Frame Indicator (TFI), and a Transport Power Control (TPC). This data is typically used to control power of the mobile station 12 on the uplink.
This data packet 60 is seen to comprise of one slot of several slots of a frame generally shown at 62, the slots together having a frame time of about 10 milliseconds. This frame 62 is seen to comprise of one of a plurality of frames together comprising a superframe having a time duration of about 720 milliseconds.
1 o Still referring to Figure 3, the DGPS assistance data typically comprise of about 5 slots 60 within the frame 62.
However, as standards evolve, this number of slots required to provide the DGPS assistance data may increase or decrease, and limitation to the number or length of slots required to provide the DGPS assistance data is not to be inferred in the present invention.
Referring now to Figure 4, there is shown an alternative embodiment of the pxesent invention whereby the DGPS assistance data is provided over the dedicated physical control channel (DPDCI~ 70. Each packet of information 70 is seen to comprise of 2 0 , one slot of several slots forming a frame 72. These slots together comprise one frame of several frames 72 comprising a superframe 74. In this embodiment, the DGPS assistance data is provided in to ~«.y~~~~r;~~- ~,a---s approximately 4 or 5 slats 70, although limitation to the format of the information is not to be inferred.
The present invention achieves technical advantages by providing differential GPS assistance data over the DPDCH and/or DPCCH of a WCDMA 3G wireless communication network to a mobile user to aid in positioning the mobile user. The present invention provides a mechanism facilitating positioning of a mobile communication terminal 12 to about 5 meters. The user terminal 12 .is provided with an integrated differential GPS receiver to zo facilitate communication of the mobile device 12 with the WCDMA
network 10. In addition, the user terminal 12 is provided with both circuitry and software to facilitate positioning of the mobile terminal 12 using the DGPS assistance data. The present invention comprises a mechanism for provisioning the data to provide very accurate map tools, fleet management, etc. in 3G WCDMA systems.
Though the invention has been described with respect to a specific preferred embodiment, many variations and modifications will become apparent to those skilled in the art upon reading the present application. It is therefore the intention that the appended ' claims' be interpreted as broadly as possible in view of the prior art to include all such variations and modifications.
',1(i.'.".'.a~°..'i~, . .__
There is a desire to provide positioni_n.g of a mobile subscriber within a wireless network. Current implementations are based on tinge difference of arrival (TDOA) techniques, which give an accuracy of position down to about 18 meters. An example of such implementations is described in WO 96 15636 A
~G~Ay~S~g,S CQMMUNICATIONS, INC.) published 23 May 1996 entitled "Locating system and Method Using a Mobile Communications Networl~' (hereinafter "WO 96 15636). WO 96 15636 describes a differential positioning system using a satellite-based radio navigation system, such as NAVSTAR positioning system to permit a mobile unit to determine its position. The positioning techniques of WO 96 15636 involves measuring the propagation times of position signals from the satellites. Also, with WO 96 15636, a set of reference position receivers generate correction date for improving the position fig of the mobile unit.
While the accuracy of prior positioning techniques, such as the one described in WO 9615636, is adequate for several features and can be implemented in today's networks, there is required more accurate positioning of a mobile subscriber. Specifically, the differential positioning system of WO 9615636 and other similar c~
~y".,-,,cr ~',y~.~
:~~:~'d 9 e.. ~. -v c positioning techniques are inadequate for today's modern 3G
wireless network. An improved mobile-based positioning solution will also reduce the need for extra capacity in the network required and used for positioning. Development is still currently undervPay with techniques being deliberated by standards committees to determine how best achieve improved resolution of positioning of a mobile station, especially in WCDMA based 3G networks.
g~l~lgy OF THE INVENTION
The present invention achieves technical advantages as a method of provisioning differential GPS assistance data in a WCDMA network over the dedicated physical data channel (DPDC~, and/or the dedicated physical control channel (DPCC~.
By providing differential GPS assistance data over these channels, mobile stations having a GPS receiver within a WCDMA based 3G
network can accurately determine position of the mobile station to an accuracy of about 5 meters.
The mobile user terminal may comprise of a mobile cellular-type mobile station, such as a PCS or cellular phone, but may also 2 0 include a computer, or a PDA.
The mobile communication terminal according to the present invention includes mechanisms for exchanging wireless . .
communications with a serving wireYess.communication network, and in addition, means to receive clifferential GPS assistance data over a dedicated physical channel, such as the DPDCH or DPCCH.
The mobile communication terminal further has circuitry and s software in a GPS receiver to determine a position of the mobile communication terminal as a fun~on of this GPS assistance data with improved resolution.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a block diagram of a wireless communication network including a WCDMA wireless network for third generation systems;
Figure 2 is a flow diagram of a method of the present invention providing differential GPS (DGPS) assistance data over the DPDCH or DPCCH on a WCDMA. carrier to support differential GPS positioning of a mobile station in the network;
Figure 3 is a block diagram of one format for providing differential GPS assistance data over the DPCCH; and Figure 4 is a block diagram of an alternative embodiment of 2 o the present invention providing differential GPS assistance data over the DPDCH. ~ - -~~ ~;~~r. ~e~~' a ~~~e~..~ . =:s~ Ca DESCRIPTION OF THE PREFTRI~ED EMBODIMENT
Figure 1 illustrates a block diagram. of a communication network 10 according to the preferred embodiment of the present invention. Communication network 10 preferably comprises a wireless telephony network seen to include an originating mobile station 12 coupled by an RF communication link to a servicing WCDMA originating network 14. The originating mobile station 12 is preferably a wireless communication device comprising a wireless mobile station. The originating WCDMA network 14 is seen to be 1 o coupled to a transit network or communication link 16, which may comprise a public switched telephone network (PSTN), but could also comprise of other networks including an optical network if desired. The transit network 16 interfaces and communicates electrical signals including digitized voice calls between originating network 14 anal a terminating network 18. Terminating network 18 may be the same as, or different than, the originating network 14, and map comprise of AMPS, D-AMPS, TDMA, GSM and IS-95 networks. For purposes of illustration, terminating network 18 is depicted as a WCDMA network. Terminating network 18 is coupled 2 0 to and services via an RF link a terminating mobile station 20, which may comprise of a fixed or mobile station such as a wireless ~ , cellular or PCS subscriber. The wireless stations and networks may ~N~E!'!!J~~ !~c s have cvdecs to provide encoding and decoding of digital signals communicated over the transit network I6.
The originating WCD~ network 14 is seen to include a base transceiver station (BTS) 30 serving via a radio frequency (R~ link s the originating mobile or feed station 12. Each BTS 30 services multiple stations 12, although only one is shown for purposes of illustration and clarity. Originating network 14 is further seen to include a radio network controller (RNC) 32 and a network switching system (NSS) 34. The BTS and RNC are sometimes 1o collectively referred to as a base switching station (BSS). RNC 32 interfaces voice calls between multiple BTSs 30 and NSS 34, wherein RNC 32 typically serves multiple BTSs 30, although only one is shown for. purposes of illustrating the present invention.
Similarly, NSS 34 services multiple RNCs 32, although only one is 15 shown for purposes of illustrating the present invention. NSS 34 includes a home location register (HLR), a mobile positioning node, and a visitor location register (VLR.) which. includes and stores various information of the stations 12 currently being served by the originating network 14.
2 o Terminating network 18 is seen to include a BTS 40 serving the terminating station 20, and typically serves multiple stations ~ , 20. Terminating network 18 is further seen to include a RNC 42 _. :.r,_~
:=~~s~.aw:~ __ _.~ ..._ E
and NSS 44. Terminating network I8 may operate according to the same operating protocol as originating network 14, i.e., both are WCDMA networks, or, the terminating network 18 may be different from the originating network 14, i.e., the originating network is WCDMA anal the terminating network may be based on AMPS, D-AMPS, GSM, TDMA or IS-9~ protocols. NSS 44 includes a I3LR., and a VLR for maintaining a register of information for all stations 20 currently being served by the terminating network 18. A
reference GPS receiver 46 provides GPS assistance data positioning information to the respective network 14 and network I8, for use by originating mobile station 12 according to the present invention.
Transit network 16 is preferably a PSTN. Originating NSS
34 and terminating NSS 44 ezchange digitized voice data thereover, which are preferably encoded in pulse code modulation {PCM) s5 format, and transmitted at about 64 kbps. Although PCM is a preferred encoding format, other encoding formats are available according to the present invention. Likewise, other transfer speeds other that 64 kbps are also contemplated by the present invention.
Generally, the digitized voice data transferred over transit network ' 20 16 can be in any format which is compatible and supported by both the originating network 14 and the terminating network 18. ~ , Referring now to Figure 2, there is illustrated at 50 a .~e~r~~~n~~ ~,.~"~
_.~.~, R 13-03-2001 ~"~H~ °ri , , ,;1~ ~ ~ - ~ . ' ~ , ~ ~ ° '; ~ o '' Z'~8 ~7 ~~ v v , a a ~4~ 89 ' U S 009926283 ,,a uu. u.r rnessrage flow diagram for providing differential GPS (DGPS) assistance data from reference GPS receiver 46 via transit network 16 to the user terminal 12. As illustrated at 52, the DGPS assistance data is continuously provided by a node of the network t 0, such as the BTS 32, over the air interface to the user terminal 12 over t0 either the dedicated physical data channel (DPDCH) or the dedicated physical controi channel (DPCCH).
At 54, there is illustrated a Poskioning Request message sent by the RNC/Core network 32 to initiate positioning of user terminal 12_ This message is responsively forwarded by the BTSlnode B 30 to the user terminal 12 as Positioning Request message 5f3.
At 58, the user terminal 12 has an integrated GPS receiver that processes the DGPS assistance data provided by the network 10 to determine the position or aid in the positioning of user terminal 12 using GPS satellite information according to techniques that are well known throughout the industry. The differential GPS
assistance data can be procasRad to speed the search of a priori information from the GPS satellites (not shown) to determine positioning of the user terminal 12 to a resolution of about 5 meters. The current position of the user terminal 12 is provided in Positioning Response message 58 by user terminal 12 to the BTSInode 8 30, which moasago is forwarded in the Positioning ;~nrlE~lGE::~ ~~E-_.~", c 13-03-2001 ~~~n~~~EN U l : 1:3- 3- 1 : 1 : UU : 972 138 7013-~ +48 H8 ' ~t uu~wrr m ~~~~~ t~ ~~°y°~ ~ ~ .~r< c..ru rutv 'US009926283 Response message 59 to tiae RNC/Core network 32. The DGPS assistance data is then continued to be provided over the air interface on the DPOGH or DPCCN as desired for future use.
The user terminal t2 can comprise of many mobile oornmunications devices including PCS and cellular type mobile phones, computers provided with suitable remote access circuitry, and PDAs. Thus, limitation to the particular type of mobile user terminal 12 is not to be inferred in the present invention. Rather, the present invention is directed to providing the particular type of differential GPS
assistance data over either or both the DPaCH or DPCCH on a WCDMA carrier to provide t 5 pcasiliurvinc~ au;urr~cy down to about 5 meters. The Integrated dlfferenbal GPS
receiver at the WCDMA end user terminal can be integral to the equipment, such as embedded within the handset of the mobile station, or an attachment. In addition, an external PC or PDA can be provided with an integrated differential GPS
receiver, and be used as a very accurate map tool, for fleet management etc.
70 Referring now to Figure 3, there is shown a block diagram of one communication fiormat providing DGPS assistance data over the dedicated physical control channel (DPCCH) to mobile user 12. As illustrated, one data packet 60 of the DPCCH is seen to comprise a slot having a time frame of about 0.625 milliseconds. This data .~vIE~IGEJ ~~E--packet 60 may comprise a header comprising an N number of bits comprising the Pilot, a Transport Frame Indicator (TFI), and a Transport Power Control (TPC). This data is typically used to control power of the mobile station 12 on the uplink.
This data packet 60 is seen to comprise of one slot of several slots of a frame generally shown at 62, the slots together having a frame time of about 10 milliseconds. This frame 62 is seen to comprise of one of a plurality of frames together comprising a superframe having a time duration of about 720 milliseconds.
1 o Still referring to Figure 3, the DGPS assistance data typically comprise of about 5 slots 60 within the frame 62.
However, as standards evolve, this number of slots required to provide the DGPS assistance data may increase or decrease, and limitation to the number or length of slots required to provide the DGPS assistance data is not to be inferred in the present invention.
Referring now to Figure 4, there is shown an alternative embodiment of the pxesent invention whereby the DGPS assistance data is provided over the dedicated physical control channel (DPDCI~ 70. Each packet of information 70 is seen to comprise of 2 0 , one slot of several slots forming a frame 72. These slots together comprise one frame of several frames 72 comprising a superframe 74. In this embodiment, the DGPS assistance data is provided in to ~«.y~~~~r;~~- ~,a---s approximately 4 or 5 slats 70, although limitation to the format of the information is not to be inferred.
The present invention achieves technical advantages by providing differential GPS assistance data over the DPDCH and/or DPCCH of a WCDMA 3G wireless communication network to a mobile user to aid in positioning the mobile user. The present invention provides a mechanism facilitating positioning of a mobile communication terminal 12 to about 5 meters. The user terminal 12 .is provided with an integrated differential GPS receiver to zo facilitate communication of the mobile device 12 with the WCDMA
network 10. In addition, the user terminal 12 is provided with both circuitry and software to facilitate positioning of the mobile terminal 12 using the DGPS assistance data. The present invention comprises a mechanism for provisioning the data to provide very accurate map tools, fleet management, etc. in 3G WCDMA systems.
Though the invention has been described with respect to a specific preferred embodiment, many variations and modifications will become apparent to those skilled in the art upon reading the present application. It is therefore the intention that the appended ' claims' be interpreted as broadly as possible in view of the prior art to include all such variations and modifications.
',1(i.'.".'.a~°..'i~, . .__
Claims (13)
1. A method of provisioning GPS assistance data in a wideband code division multiple access (WCDMA) wireless communications network (10) in order to provide differential GPS (DGPS) assistance data within one or more frames of a data packet (60), said data packet (60) comprising one slot of several slots of a frame, said slots together having a frame time of about 10 milliseconds, transmitted over a dedicated channel from a Base Transceiver Station node (BTS/node) (32) of said WCDMA wireless communications network (10) to a mobile user terminal (12) over a dedicated channel, said method comprising the steps of:
a) initiating positioning of said mobile user terminal (12) by causing the RNC/Core network (34) to send a Positioning Request message;
b) causing the BTS/nod2 (32) to forward the Positioning Request message to said mobile user terminal (12);
c) processing the DGPS assistance data by an integrated GPS receiver of the mobile user terminal (12);
d) providing the current position of the mobile user terminal (12) in a Positioning Response message by the mobile user terminal (12) to the BTS/node B (32);
c) forwarding the Positioning Response message to the RNC/Core network (34); and f) said mobile user terminal (12) receiving said differential GPS assistance data on said dedicated channel to determine a position of said mobile user terminal (12).
a) initiating positioning of said mobile user terminal (12) by causing the RNC/Core network (34) to send a Positioning Request message;
b) causing the BTS/nod2 (32) to forward the Positioning Request message to said mobile user terminal (12);
c) processing the DGPS assistance data by an integrated GPS receiver of the mobile user terminal (12);
d) providing the current position of the mobile user terminal (12) in a Positioning Response message by the mobile user terminal (12) to the BTS/node B (32);
c) forwarding the Positioning Response message to the RNC/Core network (34); and f) said mobile user terminal (12) receiving said differential GPS assistance data on said dedicated channel to determine a position of said mobile user terminal (12).
2. The method as specified in Claim 2 wherein said mobile user terminal (12) comprises a wireless mobile telephone.
3. The method as specified in Claim 2 wherein said mobile user terminal (12) comprises a computer.
4. The method as specified in Claim 2 wherein said mobile user terminal (12) comprises a PDA.
5. The method as specified in Claim 1 wherein said dedicated channel is a dedicated physical data channel (DPDCH).
6. The method as specified in Claim 1 wherein said dedicated channel is a dedicated physical control channel (DPCCH).
7. A mobile user terminal (12) comprising:
a) means for exchanging communications with a sensing wireless communication network;
b) means for causing the RNC/Core network (34) to send a Positioning Request message in order to initiate positioning of said mobile user terminal (12);
c) means for causing the BTS/node (32) to forward the Positioning Request message to said mobile user terminal (12);
d) means for processing the DGPS assistance data by an integrated GPS
receiver of the mobile user terminal (12);
e) means for providing the current position of the mobile user terminal (12) in a Positioning Response message by the mobile user terminal (12) to the BTS/node B (32);
means for forwarding the Positioning Response message to the RNC/Core network (34); and g) means to receive differential GPS assistance data over a dedicated channel and determine a position of said mobile user terminal (12) as a function of said DGPS assistance data.
a) means for exchanging communications with a sensing wireless communication network;
b) means for causing the RNC/Core network (34) to send a Positioning Request message in order to initiate positioning of said mobile user terminal (12);
c) means for causing the BTS/node (32) to forward the Positioning Request message to said mobile user terminal (12);
d) means for processing the DGPS assistance data by an integrated GPS
receiver of the mobile user terminal (12);
e) means for providing the current position of the mobile user terminal (12) in a Positioning Response message by the mobile user terminal (12) to the BTS/node B (32);
means for forwarding the Positioning Response message to the RNC/Core network (34); and g) means to receive differential GPS assistance data over a dedicated channel and determine a position of said mobile user terminal (12) as a function of said DGPS assistance data.
8. The mobile user terminal (12) as specified in Claim 7 wherein said wireless communication network comprises a wideband code division multiple access (WCDMA) network (10), said exchange means being adapted to communicate with said WCDMA network (10).
9. The mobile user terminal (12) as specified in Claim 8 wherein said terminal comprises a wireless mobile telephone.
10. The mobile user terminal (12) as specified in Claim 8 wherein said terminal comprises a computer.
11. The mobile user terminal (12) as specified in Claim 8 wherein said terminal comprises a PDA.
12, The mobile user terminal (12) wherein said means of receiving differential GPS assistance data operates over a dedicated physical data channel (DPDCH).
13. The mobile user terminal (12) of Claim 7 wherein said means of receiving differential GPS assistance data operates over a dedicated physical control channel (DPDCH).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20962098A | 1998-12-08 | 1998-12-08 | |
| US09/209,620 | 1998-12-08 | ||
| PCT/US1999/026283 WO2000034800A1 (en) | 1998-12-08 | 1999-11-05 | Provisioning of gps assistance data in a wcdma network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2353539A1 true CA2353539A1 (en) | 2000-06-15 |
Family
ID=22779535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002353539A Abandoned CA2353539A1 (en) | 1998-12-08 | 1999-11-05 | Provisioning of gps assistance data in a wcdma network |
Country Status (9)
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| EP (1) | EP1149303A1 (en) |
| JP (1) | JP2002540644A (en) |
| KR (1) | KR20010080715A (en) |
| CN (1) | CN1334925A (en) |
| AR (1) | AR021572A1 (en) |
| AU (1) | AU2022100A (en) |
| CA (1) | CA2353539A1 (en) |
| TW (1) | TW452656B (en) |
| WO (1) | WO2000034800A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6411892B1 (en) * | 2000-07-13 | 2002-06-25 | Global Locate, Inc. | Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris |
| US6538601B2 (en) * | 2001-02-27 | 2003-03-25 | Itt Manufacturing Enterprises, Inc. | Hybrid system for position determination by a mobile communications terminal |
| US7477906B2 (en) | 2004-02-27 | 2009-01-13 | Research In Motion Limited | Methods and apparatus for facilitating the determination of GPS location information for a mobile station without disrupting communications of a voice call |
| CN100344986C (en) * | 2004-12-28 | 2007-10-24 | 武汉中国光谷信息产业股份有限公司 | Vehicle mounted GPS and CDMA composite positioning method and terminal |
| WO2006134413A1 (en) * | 2005-06-13 | 2006-12-21 | Nokia Corporation | Supporting an assisted satellite based positioning |
| CN1808170B (en) * | 2006-02-23 | 2010-05-26 | 林秋城 | Positioning monitoring system based on GPS technology |
| KR100802081B1 (en) | 2006-03-31 | 2008-02-11 | 주식회사 케이티프리텔 | Method and system for providing path service |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5528248A (en) * | 1994-08-19 | 1996-06-18 | Trimble Navigation, Ltd. | Personal digital location assistant including a memory cartridge, a GPS smart antenna and a personal computing device |
| US5913170A (en) * | 1994-11-16 | 1999-06-15 | Highwaymaster Communications, Inc. | Locating system and method using a mobile communications network |
| GB9524754D0 (en) * | 1995-12-04 | 1996-04-24 | Symmetricom Inc | Mobile position determination |
-
1999
- 1999-11-05 EP EP99963868A patent/EP1149303A1/en not_active Withdrawn
- 1999-11-05 JP JP2000587203A patent/JP2002540644A/en not_active Withdrawn
- 1999-11-05 WO PCT/US1999/026283 patent/WO2000034800A1/en not_active Application Discontinuation
- 1999-11-05 AU AU20221/00A patent/AU2022100A/en not_active Abandoned
- 1999-11-05 CN CN99815932A patent/CN1334925A/en active Pending
- 1999-11-05 CA CA002353539A patent/CA2353539A1/en not_active Abandoned
- 1999-11-05 KR KR1020017007118A patent/KR20010080715A/en not_active Application Discontinuation
- 1999-12-07 AR ARP990106230A patent/AR021572A1/en unknown
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2000
- 2000-01-27 TW TW088121442A patent/TW452656B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AR021572A1 (en) | 2002-07-24 |
| TW452656B (en) | 2001-09-01 |
| KR20010080715A (en) | 2001-08-22 |
| AU2022100A (en) | 2000-06-26 |
| EP1149303A1 (en) | 2001-10-31 |
| CN1334925A (en) | 2002-02-06 |
| JP2002540644A (en) | 2002-11-26 |
| WO2000034800A1 (en) | 2000-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |