USRE35916E - Cellular telephone system that uses position of a mobile unit to make call management decisions - Google Patents

Cellular telephone system that uses position of a mobile unit to make call management decisions Download PDF

Info

Publication number
USRE35916E
USRE35916E US08/552,486 US55248695A USRE35916E US RE35916 E USRE35916 E US RE35916E US 55248695 A US55248695 A US 55248695A US RE35916 E USRE35916 E US RE35916E
Authority
US
United States
Prior art keywords
mobile unit
cell site
geographic location
mtso
call
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.)
Expired - Lifetime
Application number
US08/552,486
Inventor
Everett Dennison
Edwin L. Nass
Timothy J. Duffy
Gregory T. Pauley
Scott L. Jones
Deborah J. Shale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMSAT ADVANCED GEO-LOCATION TECHNOLOGY LLC
Original Assignee
Sycord LP
Sygnet Communications 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
Priority to US07/813,494 priority Critical patent/US5235633A/en
Application filed by Sycord LP, Sygnet Communications Inc filed Critical Sycord LP
Priority to US08/552,486 priority patent/USRE35916E/en
Application granted granted Critical
Publication of USRE35916E publication Critical patent/USRE35916E/en
Assigned to SYCORD LIMITED PARTNERSHIP reassignment SYCORD LIMITED PARTNERSHIP ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENNISON, EVERETT, JONES, SCOTT L., PAULEY, GREGORY T., SYGNET WIRELESS, INC. AND ITS WHOLLY OWNED SUBSIDIARY, SYGNET COMMUNICATIONS, INC., DUFFY, TIMOTHY J.
Assigned to EMSAT ADVANCED GEO-LOCATION TECHNOLOGY, LLC reassignment EMSAT ADVANCED GEO-LOCATION TECHNOLOGY, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SYCORD LIMITED PARTNERSHIP (A/K/A SYCORD LP)
Assigned to SYGNET COMMUNICATIONS, INC. reassignment SYGNET COMMUNICATIONS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENNISON, EVERETT, DUFFY, TIMOTHY J., JONES, SCOTT L., PAULEY, GREGORY T., SHALE, DEBORAH J., NASS, EDWIN L.
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters used to improve the performance of a single terminal
    • H04W36/32Reselection being triggered by specific parameters used to improve the performance of a single terminal by location or mobility data, e.g. speed data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18541Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/185Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18545Arrangements for managing station mobility, i.e. for station registration or localisation
    • H04B7/18547Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
    • H04B7/1855Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification
    • H04B7/18552Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification using a telephonic control signal and a second ranging satellite

Abstract

A cellular telephone system includes a plurality of cell sites and a mobile telephone switching office. Call management, including selection of a cell site most appropriate for a call associated with a mobile unit, are made based on the geographic location of the mobile unit as opposed to the strength of the signal associated with the call. The geographic location of the mobile unit is precisely determined using a NAVSTAR global positioning system, or its equivalent. Each mobile unit includes a GPS receiver that receives information from a geostationary satellite to determine the precise location of the mobile unit. This position information is relayed to the cell site initially managing the mobile unit, and the mobile unit is handed off to a cell site that is most appropriate for the call. Initial selection of an entrance cell site is made based on signal strength, but further call management decisions are made based on location of the mobile unit.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the general art of cellular mobile radiotelephone (CMR) technology, and to the particular field of managing the calls in a cellular system.

BACKGROUND OF THE INVENTION

CMR is a rapidly growing telecommunications system. The typical CMR system includes a multiplicity of cells, such as indicated in FIG. 1. A particular geographic area is subdivided into a multiplicity of subareas, with each of the subareas being serviced by a stationary transmitter/receiver setup. The cells are set up to carry signals to and from mobile units M in the range of the cell. If one cell becomes too crowded, it can be divided into smaller cells, by a process known as cell splitting. As can be seen from FIG. 1, any particular geographic area can become quite complicated with cells overlapping each other, and overlapping cells of other neighboring cellular systems. It is noted that the term "cellular" is intended to be a term of convenience, and is not intended to be limiting. The present disclosure is intended to encompass any communication system in which an overall area can be divided into one or more subareas such as shown in FIG. 1.

A typical CMR set up is indicated in FIGS. 2 through 7, and will be described so an understanding of the problem to which this invention is directed can be obtained.

FIGS. 2, 3 and 4 show a typical cellular telephone unit 2 having a unique mobile identification number stored in a suitable location such as an electrically erasable programmable read-only memory (not shown). Telephone units of this kind are known to those skilled in this art, and thus will not be described in detail.

The telephone unit 2 includes a handset 4 having a keypad 5 as well as a speaker 6 and a microphone 7. A transceiver 8, ordinarily built into the telephone unit 2, exchanges signals via an antenna 10 with a mobile telecommunications switching office or MTSO 12 via a cell site 14. A duplexer 15 connects the antenna to the transceiver. The cell site 14 includes an antenna 16 connected to a control terminal 17 via a transceiver 18. The cell 14 is connected to the MTSO via a transmission link 20.

Referring to FIGS. 4, 4A and 5, the operation of the CMR can be understood. The mobile unit M moves about the geographic areas covered by the various cells as indicated in FIG. 1. As that mobile unit moves about, it decodes the overhead message control signals generated by various cell site control channels. The mobile unit locks onto the cell site that is emitting the strongest signal. The mobile unit rescans channels periodically to update its status. If, for example, a fixed-position land-based telephone T is used to call the mobile unit, a signal is sent via landlines L, to the central office CO of a public/switched telephone system (PTSN) 12A. This system then utilizes the switching network SN associated therewith to call the MTSO 12 via a transmission link L1. The MTSO then utilizes its own switching network and generates a page request signal to all cell sites via transmission links, such as the transmission link 20. The cell site which has been notified of the presence of the mobile unit M sends a signal back to the MTSO via the landlines alerting the MTSO of the presence of the mobile unit. The MTSO then orders the mobile unit, via the notifying cell site, to tune to an assigned channel and receive the call. Billing and other business information are recorded in the MTSO at this time.

On the other hand, during call origination, the mobile unit rescans the control channels to determine which is the best server based on signal strength. Upon selecting the best server, the mobile unit transmits call site information on the control channel receive frequency and then receives a voice channel to tune to if the mobile unit is authorized to place a call.

As the mobile unit moves, the signal strength between that mobile unit and the originating cell site changes, and perhaps diminishes. Since signal strength is an inverse function of the square of the distance between the mobile unit and the cell site, signal strength can change rapidly and drastically as the mobile unit moves with respect to the cell site and therefore must be monitored closely. Moreover, signal strength can be strongly affected by terrain, environmental conditions as well as interference from other sources. The MTSO has a signal strength table ST, and signal strength from the mobile unit is constantly compared to acceptable signal strength levels in the table. Such a table can be located in each cell site if desired.

Should signal strength diminish below a preset range, the MTSO generates a "locate request" signal to all cell sites that neighbor the original cell site. Each of such neighboring cell sites receiving a signal from the mobile unit signals the MTSO, and the signal strength from such neighboring cell sites are checked against the signal strength table. The MTSO makes a decision as to which cell site should control the call, and notifies the original cell site to order the mobile unit to retune to a voice channel of the new cell site.

As soon as the mobile unit retunes, the mobile unit completes the call via the new cell site channel. This transfer of control is known as a handoff.

While this method of making switching decisions has worked well in the past, the growth and sophistication of the cellular industry has resulted in severe drawbacks to this method. First, due to uneven terrain, unpredictable environmental conditions, interference and the like, many cellular companies have been required to construct numerous cell sites. These cells often overlap neighboring cell sites and provide redundant coverage. This is extremely expensive, not only from the standpoint of construction costs, but due to monitoring and staffing costs as well. Even at this, conditions can change so rapidly that coverage may still be inconsistent.

Still further, due to idiosyncrasies in terrain and environment, a mobile unit may use a cell that is located far from the mobile unit rather than a cell located immediately adjacent to that mobile unit. Hilly terrain is a common example of this problem. While this may not be a technical problem, it is important because a cellular company cannot assess long distance charges and/or message units to the calls. This deprives the cellular company of income that it could otherwise receive and customers of optimum service. Communities are also deprived of tax income that might be assessed against such calls as well.

Still further, since only signal strength is used to make switching decisions, the location of a caller is not ascertainable. This could be important in keeping track of calls.

Other problems that have been experienced in such cellular systems include the inability to completely control the cell site transmit signal, crosstalk noise interference, dropped calls, overlap and an inability to adequately service areas with undulating terrain without infringing the borders of other cellular territories.

Therefore, there is a need for a cellular system that can provide consistently high quality service, yet can do so with a minimum number of cell sites in a particular geographic area. Still further, there is a need for a cellular system that can accurately assess charges for all CMR services including message units for calls covering a certain distance within the geographic area.

OBJECTS OF THE INVENTION

It is a main object of the present invention to provide a cellular system that can provide high quality service using only a minimum number of cell sites within a given geographic area.

It is another object of the present invention to provide a cellular system that can accurately track a mobile unit within the geographic area covered by the cellular system.

It is another object of the present invention to provide a cellular system that can assess charges for calls based on the geographic location of the call.

SUMMARY OF THE INVENTION

These, and other, objects are achieved by a cellular system that makes switching and call management decisions based on the location of a mobile unit rather than on the strength of the signal associated with that mobile unit. The exact location of each mobile unit is determined using a Global Positioning System (GPS), LORAN, or other position determining system. The NAVSTAR global positioning system, or GPS, is a system employing ultimately eighteen satellites in twelve hour orbits of 55° inclination. The system is being implemented by the Department of Defense for military use. However, it has a "clear access" (C/A) channel that is available for general civil use. The GPS is a passive navigation system on the part of the user, in that only reception of satellite-transmitted signals is required by the user to compute position. The GPS provides a capability for continuous position determination, and a position can be computed on the order of every second of time, and thus provides a capability of determining the position of a highly mobile vehicle. A full discussion of the GPS is presented in textbooks, such as "Handbook of Modern Electronics and Electrical Engineering," edited by Charles Belove and published in 1986 by Wiley-Interscience (see chapter 54 thereof, the disclosure of which is incorporated herein by reference), and includes a satellite positioned in a geostationary orbit and communicating with ground-based receivers. Based on the signals received from the satellite, the exact position in longitude and latitude, of the ground-based receiver can be determined with an extremely high degree of accuracy and precision.

The exact longitude and latitude of the mobile unit is then communicated to the MTSO, and the cell site that services that particular position is signalled by the MTSO to carry the call associated with the mobile unit. The position of the mobile unit is constantly updated, and call management decisions, such as handoffs, can be made based on the location of the mobile unit rather than the strength of the signal associated with that unit. The MTSO has a look-up table in its data storage facilities that compares positional data from the mobile units to data associated with cell site coverage areas. Based on a look up in this table, the MTSO can select the cell site most appropriate to a call.

Since the position of the mobile unit is known to the MTSO, the assessment of message units, taxes, and other charges can be made. The billing will be more consistent than is possible with present systems. Of course, call routing will be greatly improved in the system of the present invention as compared to prior systems.

Still further, since call management decisions are made based on position of the mobile unit, the number of cell sites can be reduced as communication is not subject to vagaries of weather or the like to the degree that call management decisions based on signal strength are. Even with the reduced number of cell sites, the quality of calls using such a system is improved due to proper handoff. The system is quite flexible, and cell site placement and frequency reuse are extremely efficient since call management is much more precise than in systems that use signal strength to make call management decisions.

The cellular system of the present invention in which call management decisions are made based on position of the mobile unit can reduce or eliminate the provision of cellular service beyond the authorized area, in effect reducing the interference to and from neighboring cellular carriers (reduction of inter-system interference) and more precisely define the inter-system service boundaries and handoff parameters. This system also permits precise definition of service boundaries for individual cell sites thereby allowing for greater system control and the reduction of intra-system interference. Still further, accurate and detailed cell site usage and traffic pattern data can be developed in the present system, thereby enabling accurate and precise control of system growth. The present cellular system can also be real-time tailored based on current cellular use.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

FIG. 1 illustrates a geographic area divided into a multiplicity of cells.

FIG. 2 illustrates a typical prior art mobile cellular telephone and its link with a fixed cell site and an MTSO.

FIG. 3 illustrates the mobile unit of the cellular telephone system shown in FIG. 2.

FIG. 4 illustrates a typical prior art cellular system in which a mobile unit can be connected with a fixed-position unit.

FIG. 4A is a block diagram showing systems included in the MTSO shown in FIG. 4.

FIG. 5 is a flow diagram of a call originated by the PTSN (public service telephone network) and a mobile unit using a prior art cellular system.

FIG. 6 is a block diagram of a mobile unit of a cellular telephone system which incorporates a GPS location determining system embodying the present invention.

FIG. 7 illustrates a cellular system incorporating a GPS position locating system for a mobile unit communicating with other units, such as the fixed-position unit shown.

FIG. 7A is a block diagram showing systems included in the MTSO shown in FIG. 7.

FIG. 8 is a block diagram illustrating the cellular system embodying the present invention.

FIG. 9 illustrates a look-up table that is incorporated into the MTSO of the present invention to make call management decisions based on the location of a mobile unit.

FIG. 10 is a block diagram illustrating a landline-to-mobile unit call in which position data are exchanged between the mobile unit and the MTSO.

FIG. 11A and 11B comprise a flow chart illustrating a call sequence between a mobile unit and another unit in which switching decisions are made based on the position of the mobile unit rather than the strength of the signal associated with the mobile unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION

Shown in FIGS. 6, 7 and 7A is a cellular system 20 embodying the present invention. The cellular system 20 uses positional data associated with the mobile unit M' to make call management decisions. To this end, the cellular system 20, while similar in all other respects to the cellular system illustrated in FIGS. 2 and 3, includes means for accurately and precisely determining the exact position of the mobile unit M', and then further includes means for using this positional information to determine which cell site is best suited to handle a call associated with that mobile unit M'.

The means for accurately determining the precise position of the mobile unit includes a Global Positioning System. The GPS includes satellites, such as satellite 22 in geostationary orbit about the earth. Each mobile unit further includes a GPS receiver 24 located between the duplexer and the logic circuitry 25 of the mobile unit. The GPS receiver communicates with the satellite 22 and the exact longitude and latitude of the mobile unit are determined. This information is sent to the MTSO via a cell site, and the MTSO uses a look-up table such as disclosed in FIG. 9, containing the geographic location of each cell site in the cellular system, to determine which cell site is most appropriate for use by the mobile unit. The mobile unit communicates with cell sites using unused bits of the aforediscussed overhead messages to send its positional information to the MTSO when the mobile unit is first activated. This positional information is relayed to the MTSO by the first cell site to communicate with the mobile unit. The MTSO then selects the cell site most appropriate for the mobile unit and hands that mobile unit off to that cell site. The cell sites transmit system service boundaries in their overhead messages that are interpreted by mobile units. The mobile units use the location information supplied by the GPS receiver as opposed to signal strength to determine which system to originate on. Call termination can utilize the paging process as is currently utilized. A response from a mobile unit includes the location information, and the designated control channel instructs the mobile unit to tune to one of its channels. A call in progress utilizes the overhead message of the voice channel to communicate location information. Once a mobile unit that is call processing on a particular site crosses a cell boundary, it is instructed to perform a handoff to the cell that is to service the new location. It is understood that the GPS is used as an example of the preferred source of positional data; however, other sources similar to the GPS can be used without departing from the scope of the present invention. All that is required is that the source of positional data be able to generate precise and accurate locational data on a fixed or a rapidly moving object. It is also helpful, but not absolutely required, that the CMR be only passively involved in the determination of the positional data.

The handoff process is similar to the present handoff processes, except it will be controlled according to position of the mobile unit instead of signal strength. This position information is used to determine call rating and taxing for billing purposes and call routing to make sure that the proper services for that location are provided.

A "locate request" signal is not used, since the exact location of the mobile unit is known to the MTSO. However, as indicated in FIG. 8, a signal strength method can also be used in making call management decisions if suitable. Such a process would be used if the mobile unit moves into a prior art cellular system.

A call using the cellular system of the present invention is illustrated in FIG. 11. Initial communication between a mobile unit and the MTSO is established using the overhead communication network described above. The mobile unit scans marker channels and initially locks onto the cell site that has the strongest signal. This cell site may not be the most appropriate cell site for use by that mobile unit, but it serves as an entrey into the system. Once this initial communication is established, the mobile unit uses the GPS receiver 24 and GPS satellite 22 and to determine its exact longitude and latitude. This information is then relayed to the MTSO using the originating cell site. The MTSO uses this information in conjunction with a look-up table such as shown in FIG. 9 to establish communication between the mobile unit and the cell site most appropriate to that mobile unit. The mobile unit is then handed off to that cell site. A call initiated by that mobile unit is routed through the appropriate cell site.

As indicated in FIG. 11, business information associated with the call, can be recorded at the MTSO. As indicated in FIG. 10, the dotted lines represent data transmission that contains GPS information. It is also noted that since both a position controlled system and a signal strength system are included in the cellular system of the present invention, the MTSO can include a software system in the memory 30 shown in FIG. 8 to use the position controlled system, but to also test signal strength, and to use a signal strength controlled system if a signal still falls below a predetermined value when making call management decisions based on the position of the mobile unit. In this manner, the best of both systems can be obtained.

The system of the present invention can also be used to allow a mobile to place calls only on its home system at the decision of the mobile. The mobile locating features of the system could also be important in other contexts, such as emergencies or the like.

It is understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangements of parts described and shown.

Claims (15)

We claim:
1. A cellular communications system that includes one or more cell sites and an MTSO, said system comprising:
A) locating means in a mobile unit of a cellular communications system for determining the exact geographic location of the mobile unit, said locating means including means using a satellite communication system for establishing an exact geographic location of said mobile unit and for emitting a position signal of said exact geographic location;
B) means in the MTSO for receiving the position signal transmitted by the mobile unit and using that position signal to establish the exact geographic location of the mobile unit vis . .e.!. .Iadd.a .Iaddend.vis cell sites in the cellular communications . .network.!. .Iadd.system.Iaddend.; and
C) data storage and comparison means in the MTSO storing cell site location data giving a geographic location for each of the cell sites in the cellular communications . .network.!. .Iadd.system .Iaddend.and effecting a comparison between said position signal and . .said.!. .Iadd.the .Iaddend.cell site location data and selecting a chosen cell site for use by said mobile unit based on said comparison and establishing communication between said mobile unit and said chosen cell site based on the exact geographic location of the mobile unit .Iadd.and using the geographic location of the mobile unit for taxing and billing wherein said taxing and billing is irrespective of cell site geographic location.Iaddend..
2. The cellular communication system defined in claim 1 wherein said locating means includes a means for communicating with a satellite.
3. The cellular communication system defined in claim 2 wherein said means in the MTSO for determining the geographic location of a cell site includes a look-up table.
4. The cellular communication system defined in claim 3 wherein said locating means includes a GPS.
5. The cellular communication system defined in claim 3 wherein said locating means includes a GPS receiver connected to logic circuitry in said mobile unit.
6. The cellular communications system defined in claim 5 wherein said mobile unit includes a duplexer.
7. The cellular communications system defined in claim 6 wherein said mobile unit includes a GPS receiver located between said duplexer and said logic circuitry.
8. The cellular communications system defined in claim 7 further including means for placing location data on voice and data communication signals.
9. The cellular communications system defined in claim 8 further including means for making call management decisions based on signal strength.
10. A cellular communications system that includes one or more cell sites and an MTSO, said system comprising:
A) locating means in a mobile unit in . .a.!. .Iadd.the .Iaddend.cellular communications system for determining the exact geographic location of the mobile unit; and
B) management means in the MTSO for making management decisions based on the geographic location of the mobile unit, said management means including means for storing the geographic location for each cell site in the cellular communications system and for comparing the exact geographic location of the mobile unit to the geographic location of each cell site and for selecting a .Iadd.chosen .Iaddend.cell site for use by the mobile unit based on such .Iadd.comparison and for call routing to provide proper services for the mobile unit.Iaddend..
11. A method of making call management decisions in a cellular telephone system having a plurality of cell sites and an MTSO comprising:
A) establishing a geographic location for a mobile unit;
B) matching the geographic location of the mobile unit to a cell site location; . .and.!.
C) using the cell site matched to the mobile unit to handle calls associated with the mobile unit. ...!. .Iadd.and
D) taxing and billing for the mobile unit irrespective of cell site geographic location..Iaddend.
12. The method defined in claim 11 further including a step of handing off the mobile unit to a second cell site based on the position of the mobile unit.
13. The method defined in claim 12 further including a step of continuously monitoring the position of the mobile unit as the mobile unit moves, and handing off the mobile unit to various cell sites based on the instantaneous location of the mobile unit.
14. The method defined in claim 13 further including assessing message unit charges to a call made from the mobile unit.
15. The method defined in claim 13 wherein said call management decisions include deciding which cell site will initially handle a call to or from a mobile unit.
US08/552,486 1991-12-26 1995-11-09 Cellular telephone system that uses position of a mobile unit to make call management decisions Expired - Lifetime USRE35916E (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07/813,494 US5235633A (en) 1991-12-26 1991-12-26 Cellular telephone system that uses position of a mobile unit to make call management decisions
US08/552,486 USRE35916E (en) 1991-12-26 1995-11-09 Cellular telephone system that uses position of a mobile unit to make call management decisions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/552,486 USRE35916E (en) 1991-12-26 1995-11-09 Cellular telephone system that uses position of a mobile unit to make call management decisions

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07/813,494 Reissue US5235633A (en) 1991-12-26 1991-12-26 Cellular telephone system that uses position of a mobile unit to make call management decisions

Publications (1)

Publication Number Publication Date
USRE35916E true USRE35916E (en) 1998-10-06

Family

ID=25212546

Family Applications (2)

Application Number Title Priority Date Filing Date
US07/813,494 Expired - Lifetime US5235633A (en) 1991-12-26 1991-12-26 Cellular telephone system that uses position of a mobile unit to make call management decisions
US08/552,486 Expired - Lifetime USRE35916E (en) 1991-12-26 1995-11-09 Cellular telephone system that uses position of a mobile unit to make call management decisions

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US07/813,494 Expired - Lifetime US5235633A (en) 1991-12-26 1991-12-26 Cellular telephone system that uses position of a mobile unit to make call management decisions

Country Status (3)

Country Link
US (2) US5235633A (en)
AU (1) AU3414193A (en)
WO (1) WO1993013618A1 (en)

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999051038A2 (en) * 1998-03-31 1999-10-07 Piccionelli Greg A Communication network based on geographic location
US6289297B1 (en) 1998-10-09 2001-09-11 Microsoft Corporation Method for reconstructing a video frame received from a video source over a communication channel
US6321092B1 (en) 1998-11-03 2001-11-20 Signal Soft Corporation Multiple input data management for wireless location-based applications
US6385454B1 (en) * 1998-10-09 2002-05-07 Microsoft Corporation Apparatus and method for management of resources in cellular networks
US6393293B1 (en) * 2000-01-21 2002-05-21 Motorola, Inc. Method for rectangular parameterization of a geographic area using a geolocation algorithm
US6400943B1 (en) 1997-02-03 2002-06-04 Nortel Networks Limited Method and apparatus for using advanced positioning systems in cellular communication networks
US20020093924A1 (en) * 1997-05-19 2002-07-18 Integrated Data Communications, Inc. In-band signaling for data communications over digital wireless telecommunications networks
US6438136B1 (en) 1998-10-09 2002-08-20 Microsoft Corporation Method for scheduling time slots in a communications network channel to support on-going video transmissions
US6445701B1 (en) 1998-10-09 2002-09-03 Microsoft Corporation Channel access scheme for use in network communications
US20020128018A1 (en) * 2001-03-09 2002-09-12 Bybee Michael F. Methodology for mobile user terminals in broadband systems
US20020172193A1 (en) * 1997-05-19 2002-11-21 Preston Dan A. In-band signaling for data communications over digital wireless telecommunications networks
US6490455B1 (en) 1998-10-20 2002-12-03 Samsung Electronics, Co., Ltd. Apparatus and method for detecting a mobile phone in idle state
US6507587B1 (en) 1998-10-09 2003-01-14 Microsoft Corporation Method of specifying the amount of bandwidth to reserve for use in network communications
US20030013449A1 (en) * 2001-07-11 2003-01-16 Hose David A. Monitoring boundary crossings in a wireless network
US6519004B1 (en) 1998-10-09 2003-02-11 Microsoft Corporation Method for transmitting video information over a communication channel
US6529823B1 (en) * 1999-01-28 2003-03-04 International Business Machines Corporation Maintaining desired distribution of machines using time multiplexed global positioning system
US20030083080A1 (en) * 2001-11-01 2003-05-01 Airbiquity Inc. Facility and method for wireless transmission of data
US6591103B1 (en) 1999-06-30 2003-07-08 International Business Machine Corp. Wireless telecommunications system and method of operation providing users′ carrier selection in overlapping hetergenous networks
US6618363B1 (en) 1998-10-09 2003-09-09 Microsoft Corporation Method for adapting video packet generation and transmission rates to available resources in a communications network
USRE38267E1 (en) * 1994-06-22 2003-10-07 Verizon Laboratories, Inc. Cellular network-based geographic coverage area reporting method and apparatus
US6681121B1 (en) 2000-03-21 2004-01-20 Airbiquity Inc. Circuitry for activating a modem in a cellular telephone
US6714789B1 (en) * 2000-09-18 2004-03-30 Sprint Spectrum, L.P. Method and system for inter-frequency handoff and capacity enhancement in a wireless telecommunications network
US6754266B2 (en) 1998-10-09 2004-06-22 Microsoft Corporation Method and apparatus for use in transmitting video information over a communication network
US20040203854A1 (en) * 2002-04-26 2004-10-14 Nowak Steven P. Formatting location information based on output device specifications
US20050020242A1 (en) * 1999-07-29 2005-01-27 Bryan Holland Locator system
US20050144620A1 (en) * 2003-12-25 2005-06-30 Fanuc Ltd Software download system for controller
US7092722B1 (en) 2001-07-26 2006-08-15 Sprint Spectrum L.P. Method and system for establishing mobile station active set based on mobile station location
US7260399B1 (en) 2004-08-30 2007-08-21 Sprint Spectrum L.P. Method and system for asymmetric handoff of wireless communication sessions
US7349705B1 (en) 1999-07-29 2008-03-25 Bryan Holland Wireless remote location system and method
US7366492B1 (en) 2002-05-03 2008-04-29 Verizon Corporate Services Group Inc. Method and system for mobile location detection using handoff information
US7376584B1 (en) 2001-07-31 2008-05-20 Verizon Corporate Services Group Inc. Systems and methods for fulfilling orders using location-based abbreviated dialing
US20080195306A1 (en) * 2005-06-15 2008-08-14 Airbiquity Inc. Remote destination programming for vehicle navigation
US20090073032A1 (en) * 2007-06-12 2009-03-19 Smc Electronics, Ltd. Apparatus, system and method for global positioning, monitoring, and communication
US7714778B2 (en) 1997-08-20 2010-05-11 Tracbeam Llc Wireless location gateway and applications therefor
US7733853B2 (en) 2005-01-31 2010-06-08 Airbiquity, Inc. Voice channel control of wireless packet data communications
US7764231B1 (en) 1996-09-09 2010-07-27 Tracbeam Llc Wireless location using multiple mobile station location techniques
US7792297B1 (en) 1998-03-31 2010-09-07 Piccionelli Greg A System and process for limiting distribution of information on a communication network based on geographic location
US20100225472A1 (en) * 2003-08-01 2010-09-09 Culpepper Jerry W Method and system for providing tracking services to locate an asset
US7812766B2 (en) 1996-09-09 2010-10-12 Tracbeam Llc Locating a mobile station and applications therefor
US20100273470A1 (en) * 2009-04-27 2010-10-28 Airbiquity Inc. Automatic gain control in a personal navigation device
US7881263B1 (en) 2007-07-31 2011-02-01 Sprint Spectrum L.P. Method for use of azimuth and bearing data to select a serving sector for a mobile station
US7903029B2 (en) 1996-09-09 2011-03-08 Tracbeam Llc Wireless location routing applications and architecture therefor
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8060109B2 (en) 1997-08-04 2011-11-15 Enovsys Llc Authorized location reporting mobile communication system
US8082096B2 (en) 2001-05-22 2011-12-20 Tracbeam Llc Wireless location routing applications and architecture therefor
US8135413B2 (en) 1998-11-24 2012-03-13 Tracbeam Llc Platform and applications for wireless location and other complex services
US8195204B1 (en) 2007-07-25 2012-06-05 Sprint Spectrum L.P. Method and apparatus for scanning sectors in order of distance from mobile station
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8258942B1 (en) 2008-01-24 2012-09-04 Cellular Tracking Technologies, LLC Lightweight portable tracking device
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8478275B1 (en) 2010-08-05 2013-07-02 Sprint Spectrum L.P. Conditional assignment of connection identifiers to help avoid communication errors
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8670425B1 (en) 2011-08-09 2014-03-11 Sprint Spectrum L.P. Use of past duration of stay as trigger to scan for wireless coverage
US8694025B2 (en) 1999-09-24 2014-04-08 Dennis Dupray Geographically constrained network services
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US9134398B2 (en) 1996-09-09 2015-09-15 Tracbeam Llc Wireless location using network centric location estimators
US9538493B2 (en) 2010-08-23 2017-01-03 Finetrak, Llc Locating a mobile station and applications therefor
US9875492B2 (en) 2001-05-22 2018-01-23 Dennis J. Dupray Real estate transaction system
US9924216B2 (en) 2000-03-21 2018-03-20 Ted R. Rittmaster System and process for distribution of information on a communication network

Families Citing this family (289)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545589B1 (en) 1984-09-14 2003-04-08 Aspect Communications Corporation Method and apparatus for managing telecommunications
US6026156A (en) 1994-03-18 2000-02-15 Aspect Telecommunications Corporation Enhanced call waiting
US5375161A (en) 1984-09-14 1994-12-20 Accessline Technologies, Inc. Telephone control system with branch routing
US5442805A (en) * 1988-10-05 1995-08-15 Motorola, Inc. Location-based adaptive radio control
US5734981A (en) * 1991-01-17 1998-03-31 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
US6009330A (en) * 1992-01-27 1999-12-28 Highwaymaster Communications, Inc. Method and apparatus for call delivery to a mobile unit
US5155689A (en) * 1991-01-17 1992-10-13 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus
JP3052405B2 (en) * 1991-03-19 2000-06-12 株式会社日立製作所 Mobile communication system
US5315636A (en) * 1991-06-28 1994-05-24 Network Access Corporation Personal telecommunications system
US7904187B2 (en) 1999-02-01 2011-03-08 Hoffberg Steven M Internet appliance system and method
US8352400B2 (en) 1991-12-23 2013-01-08 Hoffberg Steven M Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore
US5815814A (en) * 1991-12-26 1998-09-29 Sygnet Communications, Inc. Cellular telephone system that uses position of a mobile unit to make call management decisions
US5546445A (en) * 1991-12-26 1996-08-13 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions
US6324404B1 (en) * 1991-12-26 2001-11-27 Sycord Limited Partnership Cellular telephone system that uses position of a mobile unit to make call management decisions
US5539810A (en) 1992-01-27 1996-07-23 Highwaymaster Communications, Inc. Data messaging in a communications network
US6295449B1 (en) 1992-01-27 2001-09-25 @Track Communications, Inc. Data messaging in a communications network using a feature request
US5454027A (en) * 1992-01-27 1995-09-26 Hm Holding Corporation Phantom mobile identification number method and apparatus
US5878346A (en) * 1992-03-06 1999-03-02 Aircell Incorporated Nonterrestrial cellular mobile telecommunication network
US6408180B1 (en) * 1992-03-06 2002-06-18 Aircell, Inc. Ubiquitous mobile subscriber station
US5557656A (en) * 1992-03-06 1996-09-17 Aircell, Inc. Mobile telecommunications for aircraft and land based vehicles
US5884166A (en) * 1992-03-06 1999-03-16 Aircell, Incorporated Multidimensional cellular mobile telecommunication system
US5832380A (en) * 1992-03-06 1998-11-03 Aircell Incorporated Nonterrestrial cellular mobile telecommunication system
US5878345A (en) * 1992-03-06 1999-03-02 Aircell, Incorporated Antenna for nonterrestrial mobile telecommunication system
US5600706A (en) * 1992-04-08 1997-02-04 U S West, Inc. Method and system for determining the position of a mobile receiver
US5533094A (en) * 1992-05-12 1996-07-02 Telefonaktiebolaget L M Ericsson, A Corp. Of Sweden Allocation of paging capacity in cellular applications by storing a set of page request group designations, paging extents and paging priority parameters
US5889474A (en) * 1992-05-18 1999-03-30 Aeris Communications, Inc. Method and apparatus for transmitting subject status information over a wireless communications network
US5396540A (en) * 1992-07-23 1995-03-07 Rockwell International Corporation Remote vehicle communications system and method
DE4225685A1 (en) * 1992-08-04 1994-02-10 Philips Patentverwaltung Cellular mobile radio system
US5918183A (en) * 1992-09-01 1999-06-29 Trimble Navigation Limited Concealed mobile communications system
IL103108A (en) * 1992-09-08 1999-12-22 Mul T Lock Ltd Mobile communication systems
IT1264320B (en) * 1992-12-01 1996-09-23 System to automatically distribute calls to radio taxi
US5422813A (en) * 1992-12-17 1995-06-06 Stanford Telecommunications, Inc. No-outage GPS/commercial RF positioning system
JP2953898B2 (en) * 1993-02-17 1999-09-27 日本電気通信システム株式会社 Wireless extension incoming system for premises
US6385312B1 (en) 1993-02-22 2002-05-07 Murex Securities, Ltd. Automatic routing and information system for telephonic services
AU6772994A (en) * 1993-05-07 1994-12-12 Everett Dennison Cellular telephone system that uses position of a mobile unit to make call management decisions
US5327144A (en) * 1993-05-07 1994-07-05 Associated Rt, Inc. Cellular telephone location system
JPH0798371A (en) * 1993-06-08 1995-04-11 Ricoh Co Ltd Position confirming system
AU666279B2 (en) * 1993-06-14 1996-02-01 Motorola, Inc. Cellular communication system having information retrieval and method therefor
GB2317536B (en) * 1993-07-07 1998-07-29 Mitsubishi Electric Corp Mobile satellite communication system
US5483664A (en) * 1993-07-26 1996-01-09 Motorola, Inc. Cellular communications with scheduled handoffs
US5983161A (en) 1993-08-11 1999-11-09 Lemelson; Jerome H. GPS vehicle collision avoidance warning and control system and method
US5594740A (en) 1993-08-27 1997-01-14 Axion Logistics Corporation Wireless communications application specific enabling method and apparatus
CA2130507A1 (en) * 1993-11-19 1995-05-20 Bernard M. Snyder System and method for remotely tripping a switch
US5629693A (en) 1993-11-24 1997-05-13 Trimble Navigation Limited Clandestine location reporting by a missing vehicle
CA2134395A1 (en) * 1993-11-26 1995-05-27 Keith Andrew Olds Method and apparatus for management of automatically initiated communication
WO1995018977A1 (en) * 1994-01-03 1995-07-13 Trimble Navigation A network for code phase differential gps corrections
US6868270B2 (en) * 1994-01-11 2005-03-15 Telefonaktiebolaget L.M. Ericsson Dual-mode methods, systems, and terminals providing reduced mobile terminal registrations
DE69519484T2 (en) 1994-01-11 2001-04-05 Ericsson Inc Position record for cellular communication arrangements with satellite
US6195555B1 (en) * 1994-01-11 2001-02-27 Ericsson Inc. Method of directing a call to a mobile telephone in a dual mode cellular satellite communication network
CA2170737A1 (en) * 1994-02-07 1995-08-10 Harold Ii Pace Mobile location reporting apparatus and methods
US5678194A (en) * 1994-03-10 1997-10-14 Motorola, Inc. Method for providing geographic dependent instructions to a user of a communications unit
US5778304A (en) * 1994-03-10 1998-07-07 Motorola, Inc. Method for providing communication services based on geographic location
JP3399623B2 (en) * 1994-03-16 2003-04-21 富士通株式会社 Mobile station position acquisition device
JPH07264660A (en) * 1994-03-18 1995-10-13 Fujitsu Chugoku Tsushin Syst Kk Mobile communication monitor system
US5535431A (en) * 1994-04-05 1996-07-09 Grube; Gary W. Method of detecting unauthorized use of a communication unit
US5649300A (en) * 1994-04-13 1997-07-15 Rotec, A Nevada General Partnership Message delivery system and method therefor
US5504491A (en) * 1994-04-25 1996-04-02 Chapman; Robert W. Global status and position reporting system
US5504938A (en) * 1994-05-02 1996-04-02 Motorola, Inc. Method and apparatus for varying apparent cell size in a cellular communication system
US5561836A (en) * 1994-05-02 1996-10-01 Motorola, Inc. Method and apparatus for qualifying access to communication system services based on subscriber unit location
US5818385A (en) * 1994-06-10 1998-10-06 Bartholomew; Darin E. Antenna system and method
US5636245A (en) * 1994-08-10 1997-06-03 The Mitre Corporation Location based selective distribution of generally broadcast information
US5669061A (en) 1994-08-19 1997-09-16 Trimble Navigation Limited Automatic cellular phone tracking
GB9417128D0 (en) * 1994-08-24 1994-10-12 Plessey Semiconductors Ltd Wirreless local area network system
US5596333A (en) * 1994-08-31 1997-01-21 Motorola, Inc. Method and apparatus for conveying a communication signal between a communication unit and a base site
US5613209A (en) * 1994-09-02 1997-03-18 Motorola, Inc. Method and apparatus for automatically selecting a radio talkgroup
US5614914A (en) * 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
US5623535A (en) * 1994-09-08 1997-04-22 Lucent Technologies Inc. Operations of cellular communications systems based on mobility and teletraffic statistics collected by mobile units
US6411682B1 (en) 1995-09-21 2002-06-25 Aspect Telecommunications Corporation Computer controlled paging and telephone communication system and method
US20040113794A1 (en) * 1994-10-27 2004-06-17 Dan Schlager Self-locating personal alarm system equipped parachute
US5594425A (en) * 1994-10-31 1997-01-14 Peoplenet, Inc. Locator device
US6331825B1 (en) 1994-10-31 2001-12-18 Peoplenet, Inc. Mobile locator system
US6226529B1 (en) * 1994-12-08 2001-05-01 Itt Manufacturing Enterprises, Inc. System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS)
USRE38808E1 (en) 1994-12-23 2005-10-04 Itt Manufacturing Enterprises, Inc. Cellular positioning system (CPS)
US5604765A (en) * 1994-12-23 1997-02-18 Stanford Telecommunications, Inc. Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system
US5812522A (en) * 1995-03-31 1998-09-22 Airtouch Communications, Inc. Location-ruled radio-integrated network
US5867765A (en) * 1995-03-31 1999-02-02 Telefonaktiebolaget Lm Ericsson Non-geostationary satellite mobile communication system integration with network principles for terrestrial cellular
US5699275A (en) * 1995-04-12 1997-12-16 Highwaymaster Communications, Inc. System and method for remote patching of operating code located in a mobile unit
CA2172564C (en) * 1995-04-28 1999-12-28 Mark Jeffrey Foladare Call redirection system
US5694322A (en) 1995-05-09 1997-12-02 Highwaymaster Communications, Inc. Method and apparatus for determining tax of a vehicle
US5778315A (en) * 1995-05-16 1998-07-07 Teletrac, Inc. Integrated mobile unit location services and cellular telephone services
US5568153A (en) * 1995-05-30 1996-10-22 Telefonaktiebolaget Lm Ericsson Individually defined personal home area for subscribers in a cellular telecommunications network
US6044265A (en) * 1995-06-05 2000-03-28 Bellsouth Corporation Methods and apparatus for cellular set programming
WO1996041488A1 (en) * 1995-06-07 1996-12-19 The Dice Company Fraud detection system for electronic networks using geographical location coordinates
US5678182A (en) * 1995-06-19 1997-10-14 Trimble Navigation Limited Self-locating radio system that automatically configures to the radio regulations for the location
CA2226483A1 (en) * 1995-07-12 1997-01-30 Telefonaktiebolaget Lm Ericsson Method and apparatus for providing fixed cellular functionality
WO1997007601A1 (en) 1995-08-15 1997-02-27 Amsc Subsidiary Corporation Improved mobile earth terminal
US5831545A (en) * 1995-08-25 1998-11-03 Motorola, Inc. Method and apparatus for adjusting a communication strategy in a radio communication system using location
US5754955A (en) * 1995-09-22 1998-05-19 Telefonaktiebolaget Lm Ericsson Providing mobile communications system services in dependence on identification of cell where a mobile-originated call was initiated
US6272316B1 (en) 1995-11-17 2001-08-07 Globalstar L.P. Mobile satellite user information request system and methods
US5812932A (en) * 1995-11-17 1998-09-22 Globalstar L.P. Mobile satellite user information request system and methods
US5787347A (en) * 1995-12-11 1998-07-28 Gte Laboratories Incorporated Method and apparatus for selecting a cellular system for communication with a cellular telephone in a roaming area
US5999808A (en) * 1995-12-12 1999-12-07 Aeris Communications, Inc. Wireless gaming method
US5835907A (en) * 1995-12-20 1998-11-10 Mci Communications Corporation Emergency PCS system for identification and notification of a subscriber's location
WO1997024010A1 (en) * 1995-12-22 1997-07-03 Bell Communications Research, Inc. Personal location services using a personal communication service mobility management infrastructure
US5845203A (en) * 1996-01-25 1998-12-01 Aertis Cormmunications Remote access application messaging wireless method
US7305243B1 (en) 1996-02-28 2007-12-04 Tendler Cellular, Inc. Location based information system
US6519463B2 (en) * 1996-02-28 2003-02-11 Tendler Cellular, Inc. Location based service request system
JP2803626B2 (en) * 1996-04-05 1998-09-24 日本電気株式会社 Transmission power control scheme for a mobile radio terminal
US5774802A (en) * 1996-04-10 1998-06-30 Motorola Inc. Apparatus and method for billing in a wireless communication system
US5815809A (en) * 1996-04-16 1998-09-29 Amsc Subsidiary Corporation Mobile earth terminal communication device providing voice, data, facsimile, and/or roaming communication features
US6829484B1 (en) * 1996-04-24 2004-12-07 Fujitsu Limited Mobile communicating system, and a mobile terminal, an information center and a storage medium used therein
JP3370526B2 (en) * 1996-04-24 2003-01-27 富士通株式会社 Mobile communication system and a mobile terminal and the information center is used in the mobile communication system
US5901214A (en) 1996-06-10 1999-05-04 Murex Securities, Ltd. One number intelligent call processing system
US5926761A (en) * 1996-06-11 1999-07-20 Motorola, Inc. Method and apparatus for mitigating the effects of interference in a wireless communication system
US5870667A (en) * 1996-06-14 1999-02-09 Mediaone Group, Inc. Support system architecture for use in a communications network environment enabling automatic provisioning, change in service and maintenance
US5812086A (en) * 1996-06-27 1998-09-22 Motorola, Inc. Method and apparatus for providing duplex communication service in geographical areas where conventional services are obstructed
US5784028A (en) * 1996-06-27 1998-07-21 Motorola, Inc. Method and apparatus for simplex delivery of signals to obstructed geographical areas
US5857155A (en) * 1996-07-10 1999-01-05 Motorola, Inc. Method and apparatus for geographic based control in a communication system
US8526971B2 (en) 1996-08-15 2013-09-03 Snaptrack, Inc. Method and apparatus for providing position-related information to mobile recipients
US6199045B1 (en) 1996-08-15 2001-03-06 Spatial Adventures, Inc. Method and apparatus for providing position-related information to mobile recipients
US6985742B1 (en) 1996-08-15 2006-01-10 Spatial Adventures, Inc. Method and apparatus for providing position-related information to mobile recipients
US7274332B1 (en) 1996-09-09 2007-09-25 Tracbeam Llc Multiple evaluators for evaluation of a purality of conditions
US5966658A (en) * 1996-09-26 1999-10-12 Highwaymaster Communications, Inc. Automated selection of a communication path
US6233456B1 (en) * 1996-09-27 2001-05-15 Qualcomm Inc. Method and apparatus for adjacent coverage area handoff in communication systems
US5946615A (en) * 1996-10-08 1999-08-31 At&T Wireless Mobile network geographic address translation
US6512481B1 (en) * 1996-10-10 2003-01-28 Teratech Corporation Communication system using geographic position data
US5898680A (en) * 1996-11-05 1999-04-27 Worldspace, Inc. System for providing location-specific data to a user
US5983101A (en) * 1996-11-26 1999-11-09 Telefonaktiebolaget Lm Ericsson Point to multipoint radio access system
US6011973A (en) * 1996-12-05 2000-01-04 Ericsson Inc. Method and apparatus for restricting operation of cellular telephones to well delineated geographical areas
US6009355A (en) 1997-01-28 1999-12-28 American Calcar Inc. Multimedia information and control system for automobiles
GB2321812B (en) * 1997-02-01 2001-02-21 Ico Services Ltd User terminal positioning system and method employing external signals
US6044261A (en) * 1997-03-19 2000-03-28 Ericsson, Inc. Multiple home zone areas within a mobile telecommunications network
EP0935891A1 (en) * 1997-05-19 1999-08-18 Integrated Data Communications, Inc. System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks
US5930713A (en) * 1997-05-28 1999-07-27 Telefonaktiebolaget L M Ericsson (Publ) Proactive communication of mobile station position information following inter-exchange handoff
JPH10336101A (en) * 1997-05-30 1998-12-18 Oki Electric Ind Co Ltd Use managing system for portable telephone
US6091956A (en) * 1997-06-12 2000-07-18 Hollenberg; Dennis D. Situation information system
US6055426A (en) * 1997-06-17 2000-04-25 Highwaymaster Communications, Inc. Notification of a mobile unit out of coverage
JP2002503407A (en) * 1997-06-17 2002-01-29 モトローラ・リミテッド Wireless devices for the defense site, control system
US6148261A (en) 1997-06-20 2000-11-14 American Calcar, Inc. Personal communication system to send and receive voice data positioning information
US6522265B1 (en) 1997-06-25 2003-02-18 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
US6140956A (en) * 1997-06-25 2000-10-31 Cellutrac, Inc. Vehicle tracking and security system incorporating simultaneous voice and data communication
US6097938A (en) * 1997-07-11 2000-08-01 Northern Telecom Limited Authentication and tracking system for a cellular telephone
US6230017B1 (en) * 1997-07-31 2001-05-08 Telefonaktiebolaget Lm Ericsson Geographical restriction in cellular telecommunications network
US6275231B1 (en) * 1997-08-01 2001-08-14 American Calcar Inc. Centralized control and management system for automobiles
FI973663A (en) * 1997-09-11 1999-03-12 Nokia Telecommunications Oy Mobile Phone system
US6047183A (en) * 1997-10-30 2000-04-04 Ericsson Inc. Selection of positioning handover candidates based on angle
SE9704764L (en) 1997-12-19 1999-06-20 Ericsson Telefon Ab L M Method and device in a communication network
KR100269861B1 (en) * 1997-12-20 2000-10-16 김영환 Frequency hard hand off point determination method for software
US5950132A (en) * 1997-12-21 1999-09-07 Motorola, Inc. Method and apparatus for providing communication services for communication system users having variable speed
US20020176009A1 (en) * 1998-05-08 2002-11-28 Johnson Sandra Marie Image processor circuits, systems, and methods
US6161015A (en) * 1998-05-28 2000-12-12 Motorola, Inc. Method for improving communication coverage in multi-cell communication systems using location information
AU5220199A (en) 1998-07-20 2000-02-07 Signalsoft Corp. Subscriber delivered location-based services
US6133853A (en) 1998-07-30 2000-10-17 American Calcar, Inc. Personal communication and positioning system
CN1124059C (en) * 1998-07-30 2003-10-08 三菱电机株式会社 The mobile communication system
WO2000013336A1 (en) * 1998-08-26 2000-03-09 Ameritech Corporation Location system and method
AU1707600A (en) * 1998-10-21 2000-05-08 American Calcar, Inc. Positional camera and gps data interchange device
US6266514B1 (en) 1998-11-06 2001-07-24 Telefonaktiebolaget Lm Ericsson Poor network coverage mapping
US6442393B1 (en) * 1998-11-06 2002-08-27 Telefonaktiebolaget L M Ericsson (Publ) Use of mobile locating and power control for radio network optimization
US6411826B1 (en) 1998-11-17 2002-06-25 Ericsson Inc. Portable radiotelephones including patch antennas having openings therein
WO2000035234A1 (en) * 1998-12-07 2000-06-15 Mitsubishi Denki Kabushiki Kaisha Mobile communication device and mobile communication system
US6218984B1 (en) * 1998-12-17 2001-04-17 Trimble Navigation Limited Geo-referencing radio position determination systems using co-located antennas
US6466788B1 (en) * 1998-12-21 2002-10-15 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for transferring position data between terminals in wireless communications systems
US6351642B1 (en) 1998-12-22 2002-02-26 Telefonaktiebolaget Lm Ericsson (Publ) CDMA soft hand-off
US6597906B1 (en) * 1999-01-29 2003-07-22 International Business Machines Corporation Mobile client-based station communication based on relative geographical position information
US6304216B1 (en) * 1999-03-30 2001-10-16 Conexant Systems, Inc. Signal detector employing correlation analysis of non-uniform and disjoint sample segments
US6556553B1 (en) * 1999-04-12 2003-04-29 Intermec Ip Corp. Method for determining when a communication device should rate shift or roam in a wireless environment
US6373430B1 (en) 1999-05-07 2002-04-16 Gamin Corporation Combined global positioning system receiver and radio
US7330150B1 (en) 1999-05-07 2008-02-12 Garmin Corporation Combined global positioning system receiver and radio
US7196659B1 (en) 1999-05-07 2007-03-27 Garmin Corporation Combined global positioning system receiver and radio
US6372494B1 (en) * 1999-05-14 2002-04-16 Advanced Tissue Sciences, Inc. Methods of making conditioned cell culture medium compositions
US8065155B1 (en) 1999-06-10 2011-11-22 Gazdzinski Robert F Adaptive advertising apparatus and methods
US7356390B2 (en) 1999-06-29 2008-04-08 Space Data Corporation Systems and applications of lighter-than-air (LTA) platforms
US9908608B2 (en) 2001-04-18 2018-03-06 Space Data Corporation Systems and applications of lighter-than-air (LTA) platforms
JP3772049B2 (en) * 1999-06-29 2006-05-10 富士通株式会社 Connection control method and apparatus of a mobile communication system
US9643706B2 (en) 2001-04-18 2017-05-09 Space Data Corporation Systems and applications of lighter-than-air (LTA) platforms
US6628941B2 (en) 1999-06-29 2003-09-30 Space Data Corporation Airborne constellation of communications platforms and method
US9632503B2 (en) 2001-04-18 2017-04-25 Space Data Corporation Systems and applications of lighter-than-air (LTA) platforms
US8255149B2 (en) * 1999-07-12 2012-08-28 Skybitz, Inc. System and method for dual-mode location determination
US6539230B2 (en) * 1999-08-19 2003-03-25 Lucent Technologies Inc. Dynamic maintenance of location dependent operating parameters in a wireless terminal
JP2001061176A (en) * 1999-08-20 2001-03-06 Pioneer Electronic Corp Communication system
CA2388260C (en) 1999-10-19 2009-01-27 American Calcar Inc. Technique for effective navigation based on user preferences
EP1224577A4 (en) 1999-10-27 2003-05-28 American Calcar Inc System and method for user navigation
US6347216B1 (en) 1999-11-04 2002-02-12 Xm Satellite Radio Inc. Method and system for providing geographic specific services in a satellite communications network
US6876991B1 (en) 1999-11-08 2005-04-05 Collaborative Decision Platforms, Llc. System, method and computer program product for a collaborative decision platform
US6654362B1 (en) 1999-11-24 2003-11-25 Lucent Technologies, Inc. Use of location in handoff in wireless communication systems
US6496703B1 (en) * 1999-12-13 2002-12-17 Lucent Technologies Inc. System for disabling wireless communication devices
US6405034B1 (en) 2000-01-28 2002-06-11 Leap Wireless International, Inc. Adaptive communication data retrieval system
US6545642B1 (en) 2000-02-09 2003-04-08 Ericsson Inc. Antenna/push-button assembly and portable radiotelephone including the same
JP3860381B2 (en) * 2000-02-29 2006-12-20 富士通株式会社 Tourist Information System
US6721572B1 (en) 2000-03-24 2004-04-13 International Business Machines Corporation Mobile communication optimization near wireless dead zone regions
US8892117B2 (en) 2000-04-11 2014-11-18 Silver State Intellectual Technologies, Inc. GPS publication application server
US7343165B2 (en) * 2000-04-11 2008-03-11 American Calcar Inc. GPS publication application server
JP3512090B2 (en) * 2000-05-31 2004-03-29 日本電気株式会社 Receiving base station switching system and method of a mobile terminal
US7130643B2 (en) * 2001-01-12 2006-10-31 International Business Machines Corporation Method and system for selectively paging a communication device based on self-detected position of the communication device
JP2002044248A (en) * 2000-06-09 2002-02-08 Internatl Business Mach Corp <Ibm> Method of calling one or more land telephones or portable telephones selectively based on self-detected position of portable telephone and telephone system
US6975874B1 (en) 2000-06-09 2005-12-13 International Business Machines Corporation Portable phone that changes function according to its self-detected geographical position
US7062279B2 (en) 2000-06-22 2006-06-13 Openwave Systems Inc. Anonymous positioning of a wireless unit for data network location-based services
DE10033135C2 (en) * 2000-07-07 2002-05-23 Microcom Gmbh A method for automatic frequency switching in the mobile radio
AU7895301A (en) 2000-07-28 2002-02-13 American Calcar Inc Technique for effective organization and communication of information
KR20080080123A (en) * 2000-09-21 2008-09-02 아메리칸 캘카어 인코포레이티드 Technique for operating a vehicle effectively and safely
US7243075B1 (en) * 2000-10-03 2007-07-10 Shaffer James D Real-time process for defining, processing and delivering a highly customized contact list over a network
US6847892B2 (en) * 2001-10-29 2005-01-25 Digital Angel Corporation System for localizing and sensing objects and providing alerts
US6895246B2 (en) 2000-12-14 2005-05-17 Motorola, Inc. Method and apparatus for optimal system control parameter assignments based on mobile location
US6799116B2 (en) 2000-12-15 2004-09-28 Trimble Navigation Limited GPS correction methods, apparatus and signals
DE10103272A1 (en) * 2001-01-25 2002-08-01 Gap Ag Gsm Applikationen Und P Mobile location device has hybrid radio module that can transmit radio signals according to at least two different transmission standards acceptable to a mobile radio fixed system
US7006846B2 (en) * 2001-03-08 2006-02-28 Northrop Grumman Corporation Credit card communication system
US6559620B2 (en) 2001-03-21 2003-05-06 Digital Angel Corporation System and method for remote monitoring utilizing a rechargeable battery
US6973333B1 (en) * 2001-04-10 2005-12-06 At&T Corp. Modification of portable communications device operation in vehicles
WO2002087112A2 (en) 2001-04-18 2002-10-31 Space Data Corporation Unmanned lighter-than-air safe termination and recovery methods
US6985746B2 (en) * 2001-04-30 2006-01-10 Ipr Licensing, Inc. Wireless communication system having mobility-based content delivery
GB2380355B (en) * 2001-08-03 2003-08-06 Hutchison Whampoa Entpr Ltd Mobile telephone communications networks
US7024220B2 (en) * 2001-10-09 2006-04-04 Kyocera Wireless Corp. GPS receiver system and method
US7142900B1 (en) 2001-11-01 2006-11-28 Garmin Ltd. Combined global positioning system receiver and radio
US7080544B2 (en) * 2002-08-23 2006-07-25 Firemaster Oilfield Services Inc. Apparatus system and method for gas well site monitoring
US6816782B1 (en) 2002-10-10 2004-11-09 Garmin Ltd. Apparatus, systems and methods for navigation data transfer between portable devices
US7751826B2 (en) * 2002-10-24 2010-07-06 Motorola, Inc. System and method for E911 location privacy protection
US6768450B1 (en) 2002-11-07 2004-07-27 Garmin Ltd. System and method for wirelessly linking a GPS device and a portable electronic device
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US20050020240A1 (en) * 2003-02-07 2005-01-27 Darin Minter Private wireless network
GB2407937B (en) * 2003-11-07 2007-08-22 Excuse Me Invest Ltd Position locating system
US20060167952A1 (en) * 2004-02-24 2006-07-27 First Data Corporation Communication point bulk mail
US20070239786A1 (en) * 2004-02-24 2007-10-11 First Data Corporation System for maintaining regulatory compliance of communication point data
US20070237315A1 (en) * 2004-02-24 2007-10-11 First Data Corporation System for maintaining type and/or status information for a party - communication point relationship
US20060184586A1 (en) * 2004-02-24 2006-08-17 First Data Corporation Communication point relationship scheduling
US20050185774A1 (en) * 2004-02-24 2005-08-25 First Data Corporation System for maintaining communication point data
US20060184585A1 (en) * 2004-02-24 2006-08-17 First Data Corporation Communication point delivery instructions
US20050187870A1 (en) * 2004-02-24 2005-08-25 First Data Corporation System for maintaining balance data
US7768975B2 (en) * 2004-03-29 2010-08-03 Telecordia Technologies, Inc. Fast handoff using GPS technology for mobile telematics
US20060079218A1 (en) * 2004-10-13 2006-04-13 Tylu Wireless Technology, Inc. Filtered wireless communications
US7493127B2 (en) 2005-02-22 2009-02-17 Skyhook Wireless, Inc. Continuous data optimization of new access points in positioning systems
EP2527859B1 (en) 2004-10-29 2016-04-20 Skyhook Wireless, Inc. Location beacon database and server, method of building location beacon database, and location based service using same
US8369264B2 (en) 2005-10-28 2013-02-05 Skyhook Wireless, Inc. Method and system for selecting and providing a relevant subset of Wi-Fi location information to a mobile client device so the client device may estimate its position with efficient utilization of resources
US7881733B2 (en) 2004-11-05 2011-02-01 Wirelesswerx International, Inc. Method and system to monitor and control devices utilizing wireless media
US7564348B2 (en) * 2004-11-05 2009-07-21 Wirelesswerx International, Inc. Method and system to monitor movable entities
US7684782B2 (en) * 2005-04-13 2010-03-23 Wirelesswerx International, Inc. Method and system for initiating and handling an emergency call utilizing geographical zones
US20060234727A1 (en) * 2005-04-13 2006-10-19 Wirelesswerx International, Inc. Method and System for Initiating and Handling an Emergency Call
US8200186B2 (en) 2007-08-30 2012-06-12 Wirelesswerx International, Inc. Emergency control in a multi-dimensional space
US8285245B2 (en) * 2007-08-30 2012-10-09 Wirelesswerx International, Inc. Messaging in a multi-dimensional space
US8315203B2 (en) * 2007-08-30 2012-11-20 Wirelesswerx International, Inc. Mapping in a multi-dimensional space
US7489939B2 (en) * 2005-04-13 2009-02-10 Wirelesswerx International, Inc. Method and system for providing location updates
US8428867B2 (en) * 2007-08-30 2013-04-23 Wirelesswerx International, Inc. Configuring and using multi-dimensional zones
WO2006061295A1 (en) * 2004-12-06 2006-06-15 Alcatel Lucent System for call setup in mobile terminal
US7826835B2 (en) * 2004-12-16 2010-11-02 Intel Corporation Mobile phone policy management
US7908080B2 (en) 2004-12-31 2011-03-15 Google Inc. Transportation routing
US8260322B2 (en) * 2005-02-15 2012-09-04 Trimble Navigation Limited Method for locating coverage gaps in wireless communication services
US20060223542A1 (en) * 2005-03-31 2006-10-05 Comroe Richard A Filtered wireless communications
US7236766B2 (en) * 2005-03-31 2007-06-26 Tylu Wireless Technologies, Inc. Filtered wireless communications
US7930211B2 (en) 2005-04-20 2011-04-19 At&T Intellectual Property I, L.P. System and method of providing advertisements to portable communication devices
US8027877B2 (en) * 2005-04-20 2011-09-27 At&T Intellectual Property I, L.P. System and method of providing advertisements to mobile devices
US8015064B2 (en) * 2005-04-20 2011-09-06 At&T Intellectual Property I, Lp System and method of providing advertisements to cellular devices
US8054924B2 (en) * 2005-05-17 2011-11-08 General Motors Llc Data transmission method with phase shift error correction
US7330122B2 (en) 2005-08-10 2008-02-12 Remotemdx, Inc. Remote tracking and communication device
US9818120B2 (en) 2015-02-20 2017-11-14 Innovative Global Systems, Llc Automated at-the-pump system and method for managing vehicle fuel purchases
US8626377B2 (en) 2005-08-15 2014-01-07 Innovative Global Systems, Llc Method for data communication between a vehicle and fuel pump
US7117075B1 (en) 2005-08-15 2006-10-03 Report On Board Llc Driver activity and vehicle operation logging and reporting
US7327108B2 (en) * 2005-08-24 2008-02-05 Wayne-Dalton Corp. System and methods for automatically moving access barriers initiated by mobile transmitter devices
US8058970B2 (en) * 2005-08-24 2011-11-15 Homerun Holdings Corporation System and methods for automatically moving access barriers initiated by mobile transmitter devices
US20070046428A1 (en) * 2005-08-24 2007-03-01 Wayne-Dalton Corporation System and methods for automatically moving access barriers initiated by mobile transmitter devices
US7327107B2 (en) * 2005-08-24 2008-02-05 Wayne-Dalton Corp. System and methods for automatically moving access barriers initiated by mobile transmitter devices
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
US8194779B2 (en) * 2005-10-24 2012-06-05 General Motors Llc Method for data communication via a voice channel of a wireless communication network
US8259840B2 (en) * 2005-10-24 2012-09-04 General Motors Llc Data communication via a voice channel of a wireless communication network using discontinuities
US8194526B2 (en) * 2005-10-24 2012-06-05 General Motors Llc Method for data communication via a voice channel of a wireless communication network
US8594933B2 (en) * 2006-02-09 2013-11-26 Sap Ag Transmission of sensor data based on geographical navigation data
US20070190950A1 (en) * 2006-02-15 2007-08-16 General Motors Corporation Method of configuring voice and data communication over a voice channel
US7925320B2 (en) 2006-03-06 2011-04-12 Garmin Switzerland Gmbh Electronic device mount
US7737841B2 (en) 2006-07-14 2010-06-15 Remotemdx Alarm and alarm management system for remote tracking devices
US7936262B2 (en) 2006-07-14 2011-05-03 Securealert, Inc. Remote tracking system with a dedicated monitoring center
US8797210B2 (en) 2006-07-14 2014-08-05 Securealert, Inc. Remote tracking device and a system and method for two-way voice communication between the device and a monitoring center
US8990367B2 (en) * 2006-09-29 2015-03-24 Dell Products L.P. Consistent binding of shared storage across clustered servers
US8509728B2 (en) * 2006-10-31 2013-08-13 Qualcomm Incorporated Emergency call handling in a wireless communication system
US8761718B2 (en) * 2006-11-30 2014-06-24 West Corporation Verification of communications network-derived location information
ES2612559T3 (en) * 2007-03-07 2017-05-17 Wirelesswerx International, Inc. Method and system for providing messages specific area
US9048784B2 (en) * 2007-04-03 2015-06-02 General Motors Llc Method for data communication via a voice channel of a wireless communication network using continuous signal modulation
US7912149B2 (en) * 2007-05-03 2011-03-22 General Motors Llc Synchronization and segment type detection method for data transmission via an audio communication system
US8675680B2 (en) 2007-07-16 2014-03-18 Sige Semiconductor, Inc. Jurisdiction based parameter setting for wireless transceivers
US8232876B2 (en) 2008-03-07 2012-07-31 Securealert, Inc. System and method for monitoring individuals using a beacon and intelligent remote tracking device
US8155666B2 (en) 2008-06-16 2012-04-10 Skyhook Wireless, Inc. Methods and systems for determining location using a cellular and WLAN positioning system by selecting the best cellular positioning system solution
US8688144B1 (en) * 2008-09-09 2014-04-01 Marvell International Ltd. Method and apparatus to configure mobile communication and applications
US20100111035A1 (en) * 2008-11-05 2010-05-06 Suat Eskicioglu Location-based handovers from a macrocell to a femtocell using periodic measurement reporting
US8862137B2 (en) 2008-11-05 2014-10-14 Alcatel Lucent Method for associating a premier femtocell with user equipment
US8494695B2 (en) * 2009-09-02 2013-07-23 General Electric Company Communications system and method for a rail vehicle
US8154451B2 (en) * 2009-09-13 2012-04-10 Robert Mitchell Zimmerman Adaptive use of polarization as a means of increased wireless channel capacity
US8638256B2 (en) 2009-09-29 2014-01-28 Skyhook Wireless, Inc. Accuracy and performance of a hybrid positioning system
US20110173055A1 (en) * 2010-01-08 2011-07-14 Saugatuck Media Llc System and methods for advertising on a mobile electronic device
US20110173072A1 (en) * 2010-01-08 2011-07-14 David Ross Systems and methods for advertising on a mobile electronic device
US8514070B2 (en) 2010-04-07 2013-08-20 Securealert, Inc. Tracking device incorporating enhanced security mounting strap
US8792419B2 (en) * 2010-04-08 2014-07-29 At&T Intellectual Property I, L.P. Presence-based communication routing service and regulation of same
US8965447B1 (en) 2010-08-24 2015-02-24 Cellco Partnership Location based network selection
JP2014501912A (en) 2010-11-03 2014-01-23 スカイフック ワイヤレス,インク. Method and system for increasing the reliability and accuracy of position estimation in a hybrid positioning system
US8738071B2 (en) 2010-12-02 2014-05-27 Cellco Partnership Location based idle mobile frequency selection
US8712468B1 (en) 2011-01-20 2014-04-29 Cellco Partnership Mobile device mode control based on dual mapping of availability (presence) information
US8751589B2 (en) 2011-04-13 2014-06-10 Jingle Technologies Llc Systems and methods for transmitting information, alerts, and/or comments to participants based on location information
US20130158847A1 (en) * 2011-12-16 2013-06-20 Continental Automotive Systems, Inc. Configurable traffic zone control system
US8612278B1 (en) 2013-03-06 2013-12-17 Wirelesswerx International, Inc. Controlling queuing in a defined location
US9551588B2 (en) 2014-08-29 2017-01-24 The Nielsen Company, LLC Methods and systems to determine consumer locations based on navigational voice cues
CA2972348A1 (en) 2014-12-24 2016-06-30 Space Data Corporation Breaking apart a platform upon pending collision
US10059421B2 (en) 2014-12-30 2018-08-28 Space Data Corporation Multifunctional balloon membrane
US9530141B2 (en) * 2016-06-22 2016-12-27 Nicolas Garcia Zoning, license, and position matching to provide service

Citations (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398773A (en) * 1908-04-06 1909-06-14 Eunice Packer Device for drawing on fabrics, etc.
GB292182A (en) * 1926-12-15 1928-06-15 Aldenham Press Ltd Improvements in or relating to paper folding apparatus
US4144411A (en) * 1976-09-22 1979-03-13 Bell Telephone Laboratories, Incorporated Cellular radiotelephone system structured for flexible use of different cell sizes
US4161734A (en) * 1977-10-17 1979-07-17 General Electric Company Position surveillance using one active ranging satellite and time of arrival of a signal from an independent satellite
US4177466A (en) * 1977-11-16 1979-12-04 Lo-Jack Corporation Auto theft detection system
US4229620A (en) * 1978-11-09 1980-10-21 Bell Telephone Laboratories, Incorporated Mobile radiotelephone station two-way ranging system
US4232317A (en) * 1978-11-01 1980-11-04 Freeny Jr Charles C Quantized hyperbolic and inverse hyperbolic object location system
US4233473A (en) * 1978-08-31 1980-11-11 Frost Edward G Comprehensive automatic mobile radio telephone system
EP0199266A1 (en) * 1985-04-17 1986-10-29 Siemens Aktiengesellschaft Mobile radio system
US4700374A (en) * 1984-07-06 1987-10-13 Alcatel N.V. Mobile telephone location system
US4788711A (en) * 1985-11-25 1988-11-29 Cellular Communications Corporation Apparatus and method for a cellular freeway emergency telephone service
US4799062A (en) * 1987-04-27 1989-01-17 Axonn Corporation Radio position determination method and apparatus
US4812852A (en) * 1987-02-20 1989-03-14 Scientific Development Corporation Locating system and method
US4818998A (en) * 1986-03-31 1989-04-04 Lo-Jack Corporation Method of and system and apparatus for locating and/or tracking stolen or missing vehicles and the like
US4888593A (en) * 1987-12-15 1989-12-19 Signal Science, Inc. Time difference of arrival geolocation method, etc.
US4908629A (en) * 1986-03-31 1990-03-13 Lo-Jack Corporation Apparatus for locating and/or tracking stolen or missing vehicles and the like
US4914651A (en) * 1988-09-20 1990-04-03 Cellular Data, Inc. Cellular data system
US4939522A (en) * 1989-05-15 1990-07-03 Bechtel Group, Inc. Method and system for monitoring vehicle location
JPH02210923A (en) * 1989-02-09 1990-08-22 Sharp Corp Travelling object communication system
US4972456A (en) * 1989-02-10 1990-11-20 Gte Mobilnet Incorporated Rural radiotelephone system
US4977399A (en) * 1988-08-09 1990-12-11 At&E Corporation Mobile radio paging test system
US5043736A (en) * 1990-07-27 1991-08-27 Cae-Link Corporation Cellular position locating system
US5054110A (en) * 1989-12-29 1991-10-01 Motorola, Inc. Multi-site dispatching system cell registration
US5056109A (en) * 1989-11-07 1991-10-08 Qualcomm, Inc. Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
US5081703A (en) * 1990-06-27 1992-01-14 Pactel Corporation Satellite mobile communication system for rural service areas
US5081667A (en) * 1989-05-01 1992-01-14 Clifford Electronics, Inc. System for integrating a cellular telephone with a vehicle security system
US5086452A (en) * 1988-06-13 1992-02-04 Kabushiki Kaisha Toshiba Radio telephone system and its control method
WO1992002105A1 (en) * 1990-07-25 1992-02-06 British Telecommunications Public Limited Company Location determination and handover in mobile radio systems
US5093925A (en) * 1990-04-25 1992-03-03 Motorola, Inc. Three dimensional cellular communication system with coordinate offset and frequency reuse
US5155689A (en) * 1991-01-17 1992-10-13 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus
US5170490A (en) * 1990-09-28 1992-12-08 Motorola, Inc. Radio functions due to voice compression
US5187805A (en) * 1989-10-02 1993-02-16 Motorola, Inc. Telemetry, tracking and control for satellite cellular communication systems
US5214789A (en) * 1989-11-17 1993-05-25 Uniden America Corporation Radio channel allocation based on location of mobile users
US5218716A (en) * 1990-11-05 1993-06-08 Motorola, Inc. Method for locating a communication unit within a multi mode communication system
US5222249A (en) * 1990-11-08 1993-06-22 Motorola, Inc. Dynamic rf communication resource access by roving mobile units
US5223844A (en) * 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5227802A (en) * 1991-12-23 1993-07-13 Motorola, Inc. Satellite system cell management
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
US5278892A (en) * 1991-07-09 1994-01-11 At&T Bell Laboratories Mobile telephone system call processing arrangement
US5309474A (en) * 1990-06-25 1994-05-03 Qualcomm Incorporated System and method for generating signal waveforms in a CDMA cellular telephone system
US5311197A (en) * 1993-02-01 1994-05-10 Trimble Navigation Limited Event-activated reporting of vehicle location
US5315636A (en) * 1991-06-28 1994-05-24 Network Access Corporation Personal telecommunications system
US5317323A (en) * 1993-03-05 1994-05-31 E-Systems, Inc. Passive high accuracy geolocation system and method
US5319374A (en) * 1993-02-02 1994-06-07 Trimble Navigation Limited Precise universal time for vehicles
US5321514A (en) * 1986-05-14 1994-06-14 Radio Telecom & Technology, Inc. Interactive television and data transmission system
US5327144A (en) * 1993-05-07 1994-07-05 Associated Rt, Inc. Cellular telephone location system
US5334974A (en) * 1992-02-06 1994-08-02 Simms James R Personal security system
US5343393A (en) * 1990-06-04 1994-08-30 Nippondenso Co., Ltd. Steering angle detecting apparatus for motor vehicles based on the phase difference between a steering angle detection signal and steering angle estimated signal
US5343512A (en) * 1992-03-27 1994-08-30 Motorola, Inc. Call setup method for use with a network having mobile end users
US5361399A (en) * 1992-06-02 1994-11-01 Pagemart, Inc. Adaptive communication system for transmitting between base stations and portable transceivers via different data rate communication links
US5365450A (en) * 1992-12-17 1994-11-15 Stanford Telecommunications, Inc. Hybrid GPS/data line unit for rapid, precise, and robust position determination
US5365451A (en) * 1991-12-09 1994-11-15 Motorola, Inc. Mobile unit tracking system
US5365516A (en) * 1991-08-16 1994-11-15 Pinpoint Communications, Inc. Communication system and method for determining the location of a transponder unit
US5375140A (en) * 1992-11-24 1994-12-20 Stanford Telecommunications, Inc. Wireless direct sequence spread spectrum digital cellular telephone system
US5382958A (en) * 1992-12-17 1995-01-17 Motorola, Inc. Time transfer position location method and apparatus
US5390125A (en) * 1990-02-05 1995-02-14 Caterpillar Inc. Vehicle position determination system and method
US5390339A (en) * 1991-10-23 1995-02-14 Motorola Inc. Method and apparatus for selecting a serving transceiver
US5390124A (en) * 1992-12-01 1995-02-14 Caterpillar Inc. Method and apparatus for improving the accuracy of position estimates in a satellite based navigation system
US5392287A (en) * 1992-03-05 1995-02-21 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile communications receiver
US5396540A (en) * 1992-07-23 1995-03-07 Rockwell International Corporation Remote vehicle communications system and method
US5410728A (en) * 1988-10-28 1995-04-25 Motorola, Inc. Satellite cellular telephone and data communication system
US5418537A (en) * 1992-11-18 1995-05-23 Trimble Navigation, Ltd. Location of missing vehicles
US5430656A (en) * 1992-09-08 1995-07-04 Dekel; Itzhak Mobile communications system
US5452211A (en) * 1992-08-10 1995-09-19 Caterpillar Inc. Method and system for determining vehicle position
US5546445A (en) * 1991-12-26 1996-08-13 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0243854A (en) * 1988-08-04 1990-02-14 Toshiba Corp Radio telephone set

Patent Citations (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398773A (en) * 1908-04-06 1909-06-14 Eunice Packer Device for drawing on fabrics, etc.
GB292182A (en) * 1926-12-15 1928-06-15 Aldenham Press Ltd Improvements in or relating to paper folding apparatus
US4144411A (en) * 1976-09-22 1979-03-13 Bell Telephone Laboratories, Incorporated Cellular radiotelephone system structured for flexible use of different cell sizes
US4161734A (en) * 1977-10-17 1979-07-17 General Electric Company Position surveillance using one active ranging satellite and time of arrival of a signal from an independent satellite
US4177466A (en) * 1977-11-16 1979-12-04 Lo-Jack Corporation Auto theft detection system
US4233473A (en) * 1978-08-31 1980-11-11 Frost Edward G Comprehensive automatic mobile radio telephone system
US4232317A (en) * 1978-11-01 1980-11-04 Freeny Jr Charles C Quantized hyperbolic and inverse hyperbolic object location system
US4229620A (en) * 1978-11-09 1980-10-21 Bell Telephone Laboratories, Incorporated Mobile radiotelephone station two-way ranging system
US4700374A (en) * 1984-07-06 1987-10-13 Alcatel N.V. Mobile telephone location system
EP0199266A1 (en) * 1985-04-17 1986-10-29 Siemens Aktiengesellschaft Mobile radio system
US4788711A (en) * 1985-11-25 1988-11-29 Cellular Communications Corporation Apparatus and method for a cellular freeway emergency telephone service
US4818998A (en) * 1986-03-31 1989-04-04 Lo-Jack Corporation Method of and system and apparatus for locating and/or tracking stolen or missing vehicles and the like
US4908629A (en) * 1986-03-31 1990-03-13 Lo-Jack Corporation Apparatus for locating and/or tracking stolen or missing vehicles and the like
US5321514A (en) * 1986-05-14 1994-06-14 Radio Telecom & Technology, Inc. Interactive television and data transmission system
US4812852A (en) * 1987-02-20 1989-03-14 Scientific Development Corporation Locating system and method
US4799062A (en) * 1987-04-27 1989-01-17 Axonn Corporation Radio position determination method and apparatus
US4888593A (en) * 1987-12-15 1989-12-19 Signal Science, Inc. Time difference of arrival geolocation method, etc.
US5086452A (en) * 1988-06-13 1992-02-04 Kabushiki Kaisha Toshiba Radio telephone system and its control method
US4977399A (en) * 1988-08-09 1990-12-11 At&E Corporation Mobile radio paging test system
US4914651A (en) * 1988-09-20 1990-04-03 Cellular Data, Inc. Cellular data system
US5410728A (en) * 1988-10-28 1995-04-25 Motorola, Inc. Satellite cellular telephone and data communication system
JPH02210923A (en) * 1989-02-09 1990-08-22 Sharp Corp Travelling object communication system
US4972456A (en) * 1989-02-10 1990-11-20 Gte Mobilnet Incorporated Rural radiotelephone system
US5081667A (en) * 1989-05-01 1992-01-14 Clifford Electronics, Inc. System for integrating a cellular telephone with a vehicle security system
US4939522A (en) * 1989-05-15 1990-07-03 Bechtel Group, Inc. Method and system for monitoring vehicle location
US5187805A (en) * 1989-10-02 1993-02-16 Motorola, Inc. Telemetry, tracking and control for satellite cellular communication systems
US5056109A (en) * 1989-11-07 1991-10-08 Qualcomm, Inc. Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
US5214789A (en) * 1989-11-17 1993-05-25 Uniden America Corporation Radio channel allocation based on location of mobile users
US5054110A (en) * 1989-12-29 1991-10-01 Motorola, Inc. Multi-site dispatching system cell registration
US5390125A (en) * 1990-02-05 1995-02-14 Caterpillar Inc. Vehicle position determination system and method
US5093925A (en) * 1990-04-25 1992-03-03 Motorola, Inc. Three dimensional cellular communication system with coordinate offset and frequency reuse
US5343393A (en) * 1990-06-04 1994-08-30 Nippondenso Co., Ltd. Steering angle detecting apparatus for motor vehicles based on the phase difference between a steering angle detection signal and steering angle estimated signal
US5309474A (en) * 1990-06-25 1994-05-03 Qualcomm Incorporated System and method for generating signal waveforms in a CDMA cellular telephone system
US5081703A (en) * 1990-06-27 1992-01-14 Pactel Corporation Satellite mobile communication system for rural service areas
WO1992002105A1 (en) * 1990-07-25 1992-02-06 British Telecommunications Public Limited Company Location determination and handover in mobile radio systems
US5043736B1 (en) * 1990-07-27 1994-09-06 Cae Link Corp Cellular position location system
US5043736A (en) * 1990-07-27 1991-08-27 Cae-Link Corporation Cellular position locating system
US5170490A (en) * 1990-09-28 1992-12-08 Motorola, Inc. Radio functions due to voice compression
US5218716A (en) * 1990-11-05 1993-06-08 Motorola, Inc. Method for locating a communication unit within a multi mode communication system
US5222249A (en) * 1990-11-08 1993-06-22 Motorola, Inc. Dynamic rf communication resource access by roving mobile units
US5155689A (en) * 1991-01-17 1992-10-13 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus
US5398190A (en) * 1991-01-17 1995-03-14 Hm Holding Corporation Vehicle locating and communicating method and apparatus
US5299132A (en) * 1991-01-17 1994-03-29 By-Word Technologies, Inc. Vehicle locating and communicating method and apparatus using cellular telephone network
US5315636A (en) * 1991-06-28 1994-05-24 Network Access Corporation Personal telecommunications system
US5278892A (en) * 1991-07-09 1994-01-11 At&T Bell Laboratories Mobile telephone system call processing arrangement
US5365516A (en) * 1991-08-16 1994-11-15 Pinpoint Communications, Inc. Communication system and method for determining the location of a transponder unit
US5390339A (en) * 1991-10-23 1995-02-14 Motorola Inc. Method and apparatus for selecting a serving transceiver
US5365451A (en) * 1991-12-09 1994-11-15 Motorola, Inc. Mobile unit tracking system
US5227802A (en) * 1991-12-23 1993-07-13 Motorola, Inc. Satellite system cell management
US5546445A (en) * 1991-12-26 1996-08-13 Dennison; Everett Cellular telephone system that uses position of a mobile unit to make call management decisions
US5334974A (en) * 1992-02-06 1994-08-02 Simms James R Personal security system
US5392287A (en) * 1992-03-05 1995-02-21 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile communications receiver
US5343512A (en) * 1992-03-27 1994-08-30 Motorola, Inc. Call setup method for use with a network having mobile end users
US5223844A (en) * 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5223844B1 (en) * 1992-04-17 2000-01-25 Auto Trac Inc Vehicle tracking and security system
US5361399A (en) * 1992-06-02 1994-11-01 Pagemart, Inc. Adaptive communication system for transmitting between base stations and portable transceivers via different data rate communication links
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
US5396540A (en) * 1992-07-23 1995-03-07 Rockwell International Corporation Remote vehicle communications system and method
US5452211A (en) * 1992-08-10 1995-09-19 Caterpillar Inc. Method and system for determining vehicle position
US5430656A (en) * 1992-09-08 1995-07-04 Dekel; Itzhak Mobile communications system
US5418537A (en) * 1992-11-18 1995-05-23 Trimble Navigation, Ltd. Location of missing vehicles
US5375140A (en) * 1992-11-24 1994-12-20 Stanford Telecommunications, Inc. Wireless direct sequence spread spectrum digital cellular telephone system
US5390124A (en) * 1992-12-01 1995-02-14 Caterpillar Inc. Method and apparatus for improving the accuracy of position estimates in a satellite based navigation system
US5382958A (en) * 1992-12-17 1995-01-17 Motorola, Inc. Time transfer position location method and apparatus
US5365450A (en) * 1992-12-17 1994-11-15 Stanford Telecommunications, Inc. Hybrid GPS/data line unit for rapid, precise, and robust position determination
US5311197A (en) * 1993-02-01 1994-05-10 Trimble Navigation Limited Event-activated reporting of vehicle location
US5319374A (en) * 1993-02-02 1994-06-07 Trimble Navigation Limited Precise universal time for vehicles
US5317323A (en) * 1993-03-05 1994-05-31 E-Systems, Inc. Passive high accuracy geolocation system and method
US5327144A (en) * 1993-05-07 1994-07-05 Associated Rt, Inc. Cellular telephone location system

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
"Billing Systems: they aren't just for billing anymore," Cellular Business, v9, n12, p. 24, Nov., 1992.
"Real Time," Billing World, Jul. Aug. 1995, pp. 39-40.
"The Psuedo-Synchronisation, A Costless Feature To Obtain The Gains Of A Synchronised Cellular Network," Nov., 1991, Nice, Valbonne, FR.
AT&T 92 TNT 203 29, Oct. 7, 1992, pp. 17 39, Jun., 1995. *
AT&T 92 TNT 203-29, Oct. 7, 1992, pp. 17-39, Jun., 1995.
Billing Systems: they aren t just for billing anymore, Cellular Business, v9, n12, p. 24, Nov., 1992. *
Real Time, Billing World, Jul. Aug. 1995, pp. 39 40. *
The Psuedo Synchronisation, A Costless Feature To Obtain The Gains Of A Synchronised Cellular Network, Nov., 1991, Nice, Valbonne, FR. *

Cited By (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38267E1 (en) * 1994-06-22 2003-10-07 Verizon Laboratories, Inc. Cellular network-based geographic coverage area reporting method and apparatus
USRE44378E1 (en) 1994-06-22 2013-07-16 Verizon Laboratories Inc. Cellular network-based location system
US7764231B1 (en) 1996-09-09 2010-07-27 Tracbeam Llc Wireless location using multiple mobile station location techniques
US9237543B2 (en) 1996-09-09 2016-01-12 Tracbeam, Llc Wireless location using signal fingerprinting and other location estimators
US7903029B2 (en) 1996-09-09 2011-03-08 Tracbeam Llc Wireless location routing applications and architecture therefor
US8032153B2 (en) 1996-09-09 2011-10-04 Tracbeam Llc Multiple location estimators for wireless location
US9060341B2 (en) 1996-09-09 2015-06-16 Tracbeam, Llc System and method for hybriding wireless location techniques
US9277525B2 (en) 1996-09-09 2016-03-01 Tracbeam, Llc Wireless location using location estimators
US8994591B2 (en) 1996-09-09 2015-03-31 Tracbeam Llc Locating a mobile station and applications therefor
US7812766B2 (en) 1996-09-09 2010-10-12 Tracbeam Llc Locating a mobile station and applications therefor
US9134398B2 (en) 1996-09-09 2015-09-15 Tracbeam Llc Wireless location using network centric location estimators
US6400943B1 (en) 1997-02-03 2002-06-04 Nortel Networks Limited Method and apparatus for using advanced positioning systems in cellular communication networks
US20020172193A1 (en) * 1997-05-19 2002-11-21 Preston Dan A. In-band signaling for data communications over digital wireless telecommunications networks
US7151768B2 (en) 1997-05-19 2006-12-19 Airbiquity, Inc. In-band signaling for data communications over digital wireless telecommunications networks
US7317696B2 (en) 1997-05-19 2008-01-08 Airbiquity Inc. Method for in-band signaling of data over digital wireless telecommunications networks
US20020093990A1 (en) * 1997-05-19 2002-07-18 Preston Dan A. In-band signaling for data communications over digital wireless telecommunications networks
US20020093924A1 (en) * 1997-05-19 2002-07-18 Integrated Data Communications, Inc. In-band signaling for data communications over digital wireless telecommunications networks
US7206305B2 (en) 1997-05-19 2007-04-17 Airbiquity, Inc. Software code for improved in-band signaling for data communications over digital wireless telecommunications networks
US6690681B1 (en) 1997-05-19 2004-02-10 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications network
US7747281B2 (en) 1997-05-19 2010-06-29 Airbiquity Inc. Method for in-band signaling of data over digital wireless telecommunications networks
US7221669B2 (en) 1997-05-19 2007-05-22 Airbiquity, Inc. Cellular telephone having improved in-band signaling for data communications over digital wireless telecommunications networks
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
US20100197322A1 (en) * 1997-05-19 2010-08-05 Airbiquity Inc Method for in-band signaling of data over digital wireless telecommunications networks
US8559942B2 (en) 1997-08-04 2013-10-15 Mundi Fomukong Updating a mobile device's location
US8060109B2 (en) 1997-08-04 2011-11-15 Enovsys Llc Authorized location reporting mobile communication system
US8706078B2 (en) 1997-08-04 2014-04-22 Enovsys Llc Location reporting satellite paging system with privacy feature
US8195188B2 (en) 1997-08-04 2012-06-05 Enovsys Llc Location reporting satellite paging system with optional blocking of location reporting
US7714778B2 (en) 1997-08-20 2010-05-11 Tracbeam Llc Wireless location gateway and applications therefor
WO1999051038A2 (en) * 1998-03-31 1999-10-07 Piccionelli Greg A Communication network based on geographic location
WO1999051038A3 (en) * 1998-03-31 2000-08-31 Greg A Piccionelli Communication network based on geographic location
US7792297B1 (en) 1998-03-31 2010-09-07 Piccionelli Greg A System and process for limiting distribution of information on a communication network based on geographic location
US8068792B2 (en) 1998-05-19 2011-11-29 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications networks
US6445701B1 (en) 1998-10-09 2002-09-03 Microsoft Corporation Channel access scheme for use in network communications
US6519004B1 (en) 1998-10-09 2003-02-11 Microsoft Corporation Method for transmitting video information over a communication channel
US20060088048A1 (en) * 1998-10-09 2006-04-27 Microsoft Corporation Channel access scheme for use in network communications
US7075943B2 (en) 1998-10-09 2006-07-11 Microsoft Corporation Channel access scheme for use in network communications
US7009994B2 (en) 1998-10-09 2006-03-07 Microsoft Corporation Channel access scheme for use in network communications
US6289297B1 (en) 1998-10-09 2001-09-11 Microsoft Corporation Method for reconstructing a video frame received from a video source over a communication channel
US6385454B1 (en) * 1998-10-09 2002-05-07 Microsoft Corporation Apparatus and method for management of resources in cellular networks
US6507587B1 (en) 1998-10-09 2003-01-14 Microsoft Corporation Method of specifying the amount of bandwidth to reserve for use in network communications
US6438136B1 (en) 1998-10-09 2002-08-20 Microsoft Corporation Method for scheduling time slots in a communications network channel to support on-going video transmissions
US6754266B2 (en) 1998-10-09 2004-06-22 Microsoft Corporation Method and apparatus for use in transmitting video information over a communication network
US6618363B1 (en) 1998-10-09 2003-09-09 Microsoft Corporation Method for adapting video packet generation and transmission rates to available resources in a communications network
US6490455B1 (en) 1998-10-20 2002-12-03 Samsung Electronics, Co., Ltd. Apparatus and method for detecting a mobile phone in idle state
US20070213074A1 (en) * 1998-11-03 2007-09-13 Openwave Systems, Inc. Interface for wireless location information
US7522927B2 (en) 1998-11-03 2009-04-21 Openwave Systems Inc. Interface for wireless location information
US6321092B1 (en) 1998-11-03 2001-11-20 Signal Soft Corporation Multiple input data management for wireless location-based applications
US8135413B2 (en) 1998-11-24 2012-03-13 Tracbeam Llc Platform and applications for wireless location and other complex services
US6529823B1 (en) * 1999-01-28 2003-03-04 International Business Machines Corporation Maintaining desired distribution of machines using time multiplexed global positioning system
US6591103B1 (en) 1999-06-30 2003-07-08 International Business Machine Corp. Wireless telecommunications system and method of operation providing users′ carrier selection in overlapping hetergenous networks
US20080268875A1 (en) * 1999-07-29 2008-10-30 Bryan Holland Locator system
US20080220794A1 (en) * 1999-07-29 2008-09-11 Bryan Holland Wireless remote location system and method
US8285247B2 (en) 1999-07-29 2012-10-09 Bryan Holland Locator system
US7349705B1 (en) 1999-07-29 2008-03-25 Bryan Holland Wireless remote location system and method
US9807556B2 (en) 1999-07-29 2017-10-31 Bryan Holland Locator system
US20050020242A1 (en) * 1999-07-29 2005-01-27 Bryan Holland Locator system
US7379729B2 (en) 1999-07-29 2008-05-27 Bryan Holland Locator system
US8543083B2 (en) 1999-07-29 2013-09-24 Bryan Holland Locator system
US8238934B2 (en) 1999-07-29 2012-08-07 Bryan Holland Wireless remote location system and method
US9078101B2 (en) 1999-09-24 2015-07-07 Dennis Dupray Geographically constrained network services
US9699609B2 (en) 1999-09-24 2017-07-04 Dennis J. Dupray Network services dependent upon geographical constraints
US8694025B2 (en) 1999-09-24 2014-04-08 Dennis Dupray Geographically constrained network services
US6393293B1 (en) * 2000-01-21 2002-05-21 Motorola, Inc. Method for rectangular parameterization of a geographic area using a geolocation algorithm
US6681121B1 (en) 2000-03-21 2004-01-20 Airbiquity Inc. Circuitry for activating a modem in a cellular telephone
US9924216B2 (en) 2000-03-21 2018-03-20 Ted R. Rittmaster System and process for distribution of information on a communication network
US6714789B1 (en) * 2000-09-18 2004-03-30 Sprint Spectrum, L.P. Method and system for inter-frequency handoff and capacity enhancement in a wireless telecommunications network
US20020128018A1 (en) * 2001-03-09 2002-09-12 Bybee Michael F. Methodology for mobile user terminals in broadband systems
WO2002073830A3 (en) * 2001-03-09 2003-03-20 Hughes Electronics Corp Method for establishing a connection to a broadband communication platform
US7020463B2 (en) 2001-03-09 2006-03-28 The Directv Group, Inc. Methodology for mobile user terminals in broadband systems
US9875492B2 (en) 2001-05-22 2018-01-23 Dennis J. Dupray Real estate transaction system
US8082096B2 (en) 2001-05-22 2011-12-20 Tracbeam Llc Wireless location routing applications and architecture therefor
US20030013449A1 (en) * 2001-07-11 2003-01-16 Hose David A. Monitoring boundary crossings in a wireless network
US20050272443A1 (en) * 2001-07-11 2005-12-08 Openwave Systems Inc. Monitoring boundary crossings in a wireless network
US7133685B2 (en) 2001-07-11 2006-11-07 Openwave Systems Inc. Monitoring boundary crossings in a wireless network
US7092722B1 (en) 2001-07-26 2006-08-15 Sprint Spectrum L.P. Method and system for establishing mobile station active set based on mobile station location
US7376584B1 (en) 2001-07-31 2008-05-20 Verizon Corporate Services Group Inc. Systems and methods for fulfilling orders using location-based abbreviated dialing
US7848763B2 (en) 2001-11-01 2010-12-07 Airbiquity Inc. Method for pulling geographic location data from a remote wireless telecommunications mobile unit
US7215965B2 (en) 2001-11-01 2007-05-08 Airbiquity Inc. Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network
US7509134B2 (en) 2001-11-01 2009-03-24 Airbiquity Inc. Remote method for wireless transmission of location data
US20030083080A1 (en) * 2001-11-01 2003-05-01 Airbiquity Inc. Facility and method for wireless transmission of data
US20070072625A1 (en) * 2001-11-01 2007-03-29 Airbiquity Inc. Remote method for wireless transmission of location data
US20040203854A1 (en) * 2002-04-26 2004-10-14 Nowak Steven P. Formatting location information based on output device specifications
US7366492B1 (en) 2002-05-03 2008-04-29 Verizon Corporate Services Group Inc. Method and system for mobile location detection using handoff information
US8049617B2 (en) 2003-08-01 2011-11-01 Spectrum Tracking Systems, Inc. Method and system for providing tracking services to locate an asset
US7944350B2 (en) 2003-08-01 2011-05-17 Spectrum Tracking Systems, Inc. Method and system for providing tracking services to locate an asset
US20100225472A1 (en) * 2003-08-01 2010-09-09 Culpepper Jerry W Method and system for providing tracking services to locate an asset
US20050144620A1 (en) * 2003-12-25 2005-06-30 Fanuc Ltd Software download system for controller
US7260399B1 (en) 2004-08-30 2007-08-21 Sprint Spectrum L.P. Method and system for asymmetric handoff of wireless communication sessions
US8036201B2 (en) 2005-01-31 2011-10-11 Airbiquity, Inc. Voice channel control of wireless packet data communications
US7733853B2 (en) 2005-01-31 2010-06-08 Airbiquity, Inc. Voice channel control of wireless packet data communications
US8014942B2 (en) 2005-06-15 2011-09-06 Airbiquity, Inc. Remote destination programming for vehicle navigation
US20080195306A1 (en) * 2005-06-15 2008-08-14 Airbiquity Inc. Remote destination programming for vehicle navigation
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
US20090073032A1 (en) * 2007-06-12 2009-03-19 Smc Electronics, Ltd. Apparatus, system and method for global positioning, monitoring, and communication
US9572074B2 (en) 2007-07-25 2017-02-14 Sprint Spectrum L.P. Method and apparatus for scanning sectors in order of distance from mobile station
US8195204B1 (en) 2007-07-25 2012-06-05 Sprint Spectrum L.P. Method and apparatus for scanning sectors in order of distance from mobile station
US7881263B1 (en) 2007-07-31 2011-02-01 Sprint Spectrum L.P. Method for use of azimuth and bearing data to select a serving sector for a mobile station
US8369393B2 (en) 2007-10-20 2013-02-05 Airbiquity Inc. Wireless in-band signaling with in-vehicle systems
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US8258942B1 (en) 2008-01-24 2012-09-04 Cellular Tracking Technologies, LLC Lightweight portable tracking device
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8195093B2 (en) 2009-04-27 2012-06-05 Darrin Garrett Using a bluetooth capable mobile phone to access a remote network
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US8452247B2 (en) 2009-04-27 2013-05-28 Airbiquity Inc. Automatic gain control
US20100273470A1 (en) * 2009-04-27 2010-10-28 Airbiquity Inc. Automatic gain control in a personal navigation device
US8073440B2 (en) 2009-04-27 2011-12-06 Airbiquity, Inc. Automatic gain control in a personal navigation device
US8346227B2 (en) 2009-04-27 2013-01-01 Airbiquity Inc. Automatic gain control in a navigation device
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8478275B1 (en) 2010-08-05 2013-07-02 Sprint Spectrum L.P. Conditional assignment of connection identifiers to help avoid communication errors
US9538493B2 (en) 2010-08-23 2017-01-03 Finetrak, Llc Locating a mobile station and applications therefor
US8670425B1 (en) 2011-08-09 2014-03-11 Sprint Spectrum L.P. Use of past duration of stay as trigger to scan for wireless coverage
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem

Also Published As

Publication number Publication date
WO1993013618A1 (en) 1993-07-08
US5235633A (en) 1993-08-10
AU3414193A (en) 1993-07-28

Similar Documents

Publication Publication Date Title
US5218716A (en) Method for locating a communication unit within a multi mode communication system
EP0417986B1 (en) Telephone system
US5287541A (en) Global satellite communication system with geographic protocol conversion
RU2153226C2 (en) Device for controlling distributed signal transmission system using satellite retransmitters
US6496697B2 (en) Method to measure and characterize interference throughout a cellular system
US6085085A (en) Method and apparatus for performing preferred system selection
AU774005B2 (en) Location reporting satellite paging system with optional blocking of location reporting
CN1111979C (en) Mobile satellite communications system with local and global network
CN1124704C (en) Method and apparatus for preforming position-and preference-based service selection in a mobile telephone system
US6240069B1 (en) System and method for location-based group services
CA2081187C (en) Call routing in mobile telephone systems
US7162365B2 (en) Non-GPS navigation
RU2263412C2 (en) Method for determining position of mobile station in communication system
EP0700173B1 (en) Method of route diversity in mobile radio communication systems
AU714335B2 (en) Multiple hyperband radiocommunications system
US5551058A (en) Method and system for intelligent cell selection using location data in cellular systems
US5559865A (en) Airborne radiotelephone communications system
US6631263B1 (en) Cell hand-off border identification using MS positioning and signal strength values
US6181934B1 (en) System and method for providing efficient signaling for a positioning request and an indication of when a mobile station becomes available for location services
US6101379A (en) Mobile terminal based tariff acquisition system for wireless services
AU745668B2 (en) Network based tariff acquisition system for roaming mobile subscribers
EP0603390B1 (en) System for locating and communicating with mobile vehicles
US6055434A (en) Method and system for locating a mobile station within a mobile telecommunications network
Fossa et al. An overview of the IRIDIUM (R) low Earth orbit (LEO) satellite system
US7082305B2 (en) Method and apparatus for generating a neighbor cell list

Legal Events

Date Code Title Description
FPAY Fee payment

Year of fee payment: 8

AS Assignment

Owner name: SYCORD LIMITED PARTNERSHIP, NEVADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SYGNET WIRELESS, INC. AND ITS WHOLLY OWNED SUBSIDIARY, SYGNET COMMUNICATIONS, INC.;DENNISON, EVERETT;DUFFY, TIMOTHY J.;AND OTHERS;REEL/FRAME:013887/0859;SIGNING DATES FROM 19980506 TO 19980605

Owner name: SYCORD LIMITED PARTNERSHIP, NEVADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SYGNET WIRELESS, INC. AND ITS WHOLLY OWNED SUBSIDIARY, SYGNET COMMUNICATIONS, INC.;DENNISON, EVERETT;DUFFY, TIMOTHY J.;AND OTHERS;SIGNING DATES FROM 19980506 TO 19980605;REEL/FRAME:013887/0859

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: EMSAT ADVANCED GEO-LOCATION TECHNOLOGY, LLC, OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SYCORD LIMITED PARTNERSHIP (A/K/A SYCORD LP);REEL/FRAME:019254/0455

Effective date: 20070507

AS Assignment

Owner name: SYGNET COMMUNICATIONS, INC., OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DENNISON, EVERETT;NASS, EDWIN L.;DUFFY, TIMOTHY J.;AND OTHERS;REEL/FRAME:022520/0350;SIGNING DATES FROM 19911221 TO 19911223