Claims Analysis
Total Claims: 92
Claim 1
Independent Claim
189 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, a method for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, said method comprising: transmitting said data packet from said first antenna to form a first transmitted data packet; transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; receiving in sequence said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; selecting at least one of said first and second received data packets to form said digital data at said receiver; measuring the respective time of arrival of said first, second and third transmitted data packets at said receiver; and computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 2
Dependent Claim
189 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, a method for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, said method comprising: transmitting said data packet from said first antenna to form a first transmitted data packet; transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; receiving in sequence said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; selecting at least one of said first and second received data packets to form said digital data at said receiver; measuring the respective time of arrival of said first, second and third transmitted data packets at said receiver; and computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 3
Dependent Claim
50 words
A wireless communication system in accordance with claim 1, wherein said step of computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the distance to at least one of said first, second and third antennas.
Claim 4
Dependent Claim
50 words
A wireless communication system in accordance with claim 1, wherein said step of computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said first and second antennas.
Claim 5
Dependent Claim
50 words
A wireless communication system in accordance with claim 3, wherein said step of computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said second and third antennas.
Claim 6
Dependent Claim
92 words
A wireless communication system in accordance with claim 1, wherein said step of computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing a first distance to said first antenna, computing a second distance to said second antenna and computing a third distance to said third antenna, and calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 7
Dependent Claim
303 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station, and computing and subsequently storing in said subscriber station the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 8
Dependent Claim
303 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station, and computing and subsequently storing in said subscriber station the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 9
Dependent Claim
51 words
A wireless communication system in accordance with claim 6, wherein said step of computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the distance to at least one of said first, second and third antennas.
Claim 10
Dependent Claim
51 words
A wireless communication system in accordance with claim 6, wherein said step of computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said first and second antennas.
Claim 11
Dependent Claim
51 words
A wireless communication system in accordance with claim 8, wherein said step of computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said second and third antennas.
Claim 12
Dependent Claim
93 words
A wireless communication system in accordance with claim 6, wherein said step of computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing a first distance to said first antenna, computing a second distance to said second antenna and computing a third distance to said third antenna, and calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 13
Dependent Claim
30 words
A method in accordance with claim 6, further comprising transmitting a location file containing data representing said location of said subscriber station from said subscriber station to said base station.
Claim 14
Dependent Claim
340 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; computing a location file comprising data representing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets; and transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to said base station.
Claim 15
Dependent Claim
340 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; computing a location file comprising data representing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets; and transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to said base station.
Claim 16
Dependent Claim
76 words
A method in accordance with claim 12, wherein said base station receives the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station, computes the location of said subscriber station, and transmits the computed location of said subscriber station to said subscriber station, said subscriber station method further comprising the step of receiving said computed subscriber station location.
Claim 17
Dependent Claim
60 words
A method in accordance with claim 12, wherein said location file contains data representing the distance to one of said first, second and third antennas, and the respective differences in time of arrival of received data packets between said one of said first, second and third antennas, and the remaining two other ones of said first, second and third antennas.
Claim 18
Dependent Claim
27 words
A method in accordance with claim 12, wherein said location file data is accessed by said base station by dial up through the public switched telephone network.
Claim 19
Dependent Claim
26 words
A method in accordance with claim 12, wherein said location file data is accessed by a password and transmitted to said base station in encrypted form.
Claim 20
Dependent Claim
27 words
A method in accordance with claim 12, wherein said location file data is transmitted to said base station responsive to an initiation indication at said subscriber station.
Claim 21
Dependent Claim
17 words
A method in accordance with claim 12, wherein said location file data is accessed by a password.
Claim 22
Dependent Claim
21 words
A method in accordance with claim 12, wherein said location file data is transmitted to said base station in encrypted form.
Claim 23
Dependent Claim
36 words
A method in accordance with claim 12, further comprising transmitting a location file containing data representing said location of said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 24
Dependent Claim
203 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, an apparatus for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, said apparatus comprising: means for transmitting said data packet from said first antenna to form a first transmitted data packet; means for transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; means for transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; means for receiving in sequence said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; means for selecting at least one of said first and second received data packets to form said digital data at said receiver; means for measuring the respective time of arrival of said first, second and third transmitted data packets at said receiver; and means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 25
Dependent Claim
203 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, an apparatus for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, said apparatus comprising: means for transmitting said data packet from said first antenna to form a first transmitted data packet; means for transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; means for transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; means for receiving in sequence said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; means for selecting at least one of said first and second received data packets to form said digital data at said receiver; means for measuring the respective time of arrival of said first, second and third transmitted data packets at said receiver; and means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 26
Dependent Claim
50 words
A wireless communication system in accordance with claim 21, wherein said means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the distance to at least one of said first, second and third antennas.
Claim 27
Dependent Claim
52 words
A wireless communication system in accordance with claim 21, wherein said means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing the difference in distance between said receiver to said first and second antennas.
Claim 28
Dependent Claim
52 words
A wireless communication system in accordance with claim 23, wherein said means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing the difference in distance between said receiver to said second and third antennas.
Claim 29
Dependent Claim
98 words
A wireless communication system in accordance with claim 21, wherein said means for computing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing a first distance to said first antenna, means for computing a second distance to said second antenna and computing a third distance to said third antenna, and means for calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 30
Dependent Claim
315 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet, wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station, and means for computing and subsequently storing in said subscriber station the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 31
Dependent Claim
315 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet, wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station, and means for computing and subsequently storing in said subscriber station the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 32
Dependent Claim
51 words
A wireless communication system in accordance with claim 26, wherein said means for computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the distance to at least one of said first, second and third antennas.
Claim 33
Dependent Claim
53 words
A wireless communication system in accordance with claim 26, wherein said means for computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing the difference in distance between said receiver to said first and second antennas.
Claim 34
Dependent Claim
53 words
A wireless communication system in accordance with claim 28, wherein said means for computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing the difference in distance between said receiver to said second and third antennas.
Claim 35
Dependent Claim
101 words
A wireless communication system in accordance with claim 26, wherein said means for computing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets comprises means for computing a first distance to said first antenna, means for computing a second distance to said second antenna and means for computing a third distance to said third antenna, and means for calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 36
Dependent Claim
32 words
An apparatus in accordance with claim 26, further comprising means for transmitting a location file containing data representing said location of said subscriber station from said subscriber station to said base station.
Claim 37
Dependent Claim
356 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a cdma PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes means for retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; means for computing a location file comprising data representing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets; and means for transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to said base station.
Claim 38
Dependent Claim
356 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a cdma PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes means for retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; means for computing a location file comprising data representing the location of said subscriber station from said respective measured time of arrival of said first, second and third transmitted data packets; and means for transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to said base station.
Claim 39
Dependent Claim
76 words
An apparatus in accordance with claim 32, wherein said base station receives the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station, computes the location of said subscriber station, and transmits the computed location of said subscriber station to said subscriber station, said subscriber station apparatus further comprising the means for receiving said computed subscriber station location.
Claim 40
Dependent Claim
60 words
An apparatus in accordance with claim 32, wherein said location file contains data representing the distance to one of said first, second and third antennas, and the respective differences in time of arrival of received data packets between said one of said first, second and third antennas, and the remaining two other ones of said first, second and third antennas.
Claim 41
Dependent Claim
27 words
An apparatus in accordance with claim 32, wherein said location file data is accessed by said base station by dial up through the public switched telephone network.
Claim 42
Dependent Claim
26 words
An apparatus in accordance with claim 32, wherein said location file data is accessed by a password and transmitted to said base station in encrypted form.
Claim 43
Dependent Claim
27 words
An apparatus in accordance with claim 32, wherein said location file data is transmitted to said base station responsive to an initiation indication at said subscriber station.
Claim 44
Dependent Claim
17 words
An apparatus in accordance with claim 32, wherein said location file data is accessed by a password.
Claim 45
Dependent Claim
21 words
An apparatus in accordance with claim 32, wherein said location file data is transmitted to said base station in encrypted form.
Claim 46
Dependent Claim
38 words
An apparatus in accordance with claim 32, further comprising means for transmitting a location file containing data representing said location of said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 47
Dependent Claim
201 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, including a method for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, a method for calibrating said location system, said calibration method comprising: positioning a calibration receiver at a known location; transmitting said data packet from said first antenna to form a first transmitted data packet; transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; receiving in sequence said first, second and third transmitted data packets at said calibration receiver forming respective first, second and third received data packets; measuring the respective time of arrival of said first, second and third transmitted data packets at said calibration receiver; computing the location of said calibration receiver from said respective measured time of arrival of said first, second and third transmitted data packets; and comparing the computed location of said calibration receiver to said known location.
Claim 48
Dependent Claim
201 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, including a method for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, a method for calibrating said location system, said calibration method comprising: positioning a calibration receiver at a known location; transmitting said data packet from said first antenna to form a first transmitted data packet; transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; receiving in sequence said first, second and third transmitted data packets at said calibration receiver forming respective first, second and third received data packets; measuring the respective time of arrival of said first, second and third transmitted data packets at said calibration receiver; computing the location of said calibration receiver from said respective measured time of arrival of said first, second and third transmitted data packets; and comparing the computed location of said calibration receiver to said known location.
Claim 49
Dependent Claim
43 words
A wireless communication system in accordance with claim 41, wherein said calibration method further comprises computing the difference between said computed location and said known location, and introducing respective delays in transmissions from said first, second and third antennas to calibrate said system.
Claim 50
Dependent Claim
50 words
A wireless communication system in accordance with claim 41, wherein said calibration method further comprises computing error indications representing the difference between said computed location and said known location, and storing said error indications for use in said method for determining the location of said receiver to calibrate said system.
Claim 51
Dependent Claim
215 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, including an apparatus for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, an apparatus for calibrating said location system, said calibration apparatus comprising: a calibration receiver positioned at a known location; means for transmitting said data packet from said first antenna to form a first transmitted data packet; means for transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; means for transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; means for receiving in sequence said first, second and third transmitted data packets at said calibration receiver forming respective first, second and third received data packets; means for measuring the respective time of arrival of said first, second and third transmitted data packets at said calibration receiver; means for computing the location of said calibration receiver from said respective measured time of arrival of said first, second and third transmitted data packets; and means for comparing the computed location of said calibration receiver to said known location.
Claim 52
Dependent Claim
215 words
In a wireless communication system, wherein a data packet is communicated from a transmitter to a receiver to form a received data packet, including an apparatus for determining the location of said receiver, said system including first, second and third antennas spaced apart from each other, an apparatus for calibrating said location system, said calibration apparatus comprising: a calibration receiver positioned at a known location; means for transmitting said data packet from said first antenna to form a first transmitted data packet; means for transmitting said data packet from said second antenna to form a second transmitted data packet after said first transmitted data packet; means for transmitting said data packet from said third antenna to form a third transmitted data packet after said second transmitted data packet; means for receiving in sequence said first, second and third transmitted data packets at said calibration receiver forming respective first, second and third received data packets; means for measuring the respective time of arrival of said first, second and third transmitted data packets at said calibration receiver; means for computing the location of said calibration receiver from said respective measured time of arrival of said first, second and third transmitted data packets; and means for comparing the computed location of said calibration receiver to said known location.
Claim 53
Dependent Claim
47 words
A wireless communication system in accordance with claim 44, wherein said calibration means further comprises means for computing the difference between said computed location and said known location, and means for introducing respective delays in transmissions from said first, second and third antennas to calibrate said system.
Claim 54
Dependent Claim
55 words
A wireless communication system in accordance with claim 44, wherein said calibration means further comprises means for computing error indications representing the difference between said computed location and said known location, and means for storing said computed error indications for use in said means for determining the location of said receiver to calibrate said system.
Claim 55
Dependent Claim
340 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; computing a location file comprising data corresponding to said respective measured time of arrival of said first, second and third transmitted data packets; and transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 56
Dependent Claim
340 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a CDMA PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, a method in a receiver in said subscriber station for receiving said data packet, said method comprising: receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said method for receiving said data packet in said subscriber station receiver further comprising: receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; computing a location file comprising data corresponding to said respective measured time of arrival of said first, second and third transmitted data packets; and transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 57
Dependent Claim
79 words
A method in accordance with claim 47, wherein said location service center receives the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station, computes the location of said subscriber station, and transmits the computed location of said subscriber station to said subscriber station, said subscriber station method further comprising the step of receiving and displaying said computed subscriber station location.
Claim 58
Dependent Claim
37 words
A method in accordance with claim 47, wherein said location file data is accessed by a location service center center separate from said base station, and connected to said base staion through the public switched telephone network.
Claim 59
Dependent Claim
35 words
A method in accordance with claim 47, wherein said location file data is accessed by a password and transmitted to a location service center separate from said base station through the public switched telephone network.
Claim 60
Dependent Claim
44 words
A method in accordance with claim 47, wherein said location file data is transmitted to said base station responsive to an initiation indication at said subscriber station and to a location service center separate from said base station through the public switched telephone network.
Claim 61
Dependent Claim
354 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a cdma PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; means for computing a location file comprising data corresponding to said respective measured time of arrival of said first, second and third transmitted data packets; and means for transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 62
Dependent Claim
354 words
In a wireless communication system, wherein a data packet is communicated from a base station to a subscriber station using a cdma PN sequence, said system including at least one transfer station between said base station and said subscriber station for receiving said data packet from said base station and retransmitting said data packet using said PN sequence to said subscriber station on a first antenna to form a first transmitted data packet and retransmitting said data packet using said PN sequence on a second antenna to form a second transmitted data packet after said first transmitted data packet, an apparatus in a receiver in said subscriber station for receiving said data packet, said apparatus comprising: means for receiving said first transmitted data packet at said subscriber station receiver forming said first received data packet; means for receiving said second transmitted data packet at said subscriber station receiver forming respective second received data packet after receiving said first transmitted data packet; wherein said system further includes retransmitting said data packet using said PN sequence on a third antenna to form a third transmitted data packet after said second transmitted data packet, said apparatus for receiving said data packet in said subscriber station receiver further comprising: means for receiving said third transmitted data packet at said subscriber station receiver forming said third received data packet after receiving said second transmitted data packet; means for selecting at least one of said first, second and third received data packets to form said received data packet at said receiver; means for measuring the respective time of arrival using said PN sequence phase relative to said first, second and third transmitted data packets at said subscriber station; means for computing a location file comprising data corresponding to said respective measured time of arrival of said first, second and third transmitted data packets; and means for transmitting the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 63
Dependent Claim
79 words
An apparatus in accordance with claim 52, wherein said location service center receives the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said subscriber station, computes the location of said subscriber station, and transmits the computed location of said subscriber station to said subscriber station, said subscriber station apparatus further comprising the means for receiving and displaying said computed subscriber station location.
Claim 64
Dependent Claim
37 words
An apparatus in accordance with claim 52, wherein said location file data is accessed by a location service center center separate from said base station, and connected to said base station through the public switched telephone network.
Claim 65
Dependent Claim
35 words
An apparatus in accordance with claim 52, wherein said location file data is accessed by a password and transmitted to a location service center separate from said base station through the public switched telephone network.
Claim 66
Dependent Claim
44 words
An apparatus in accordance with claim 52, wherein said location file data is transmitted to said base station responsive to an initiation indication at said subscriber station and to a location service center separate from said base station through the public switched telephone network.
Claim 67
Dependent Claim
160 words
In a wireless CDMA communication system, wherein data packets are communicated from a plurality of transmitters to a receiver using at least one CDMA PN sequence to form a plurality of received data packets, said CDMA communication system including first, second and third antennas spaced apart from each other, a method for determining the actual geographic location of said receiver, said method comprising: receiving said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; measuring the respective time of arrival using said PN sequence phase relative to at least one of said first, second and third transmitted data packets at said receiver; storing the geographic coordinates of said first, second and third antennas; and computing the actual geographic location of said receiver from said stored geographic coordinates of said first, second and third antennas and said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 68
Dependent Claim
160 words
In a wireless CDMA communication system, wherein data packets are communicated from a plurality of transmitters to a receiver using at least one CDMA PN sequence to form a plurality of received data packets, said CDMA communication system including first, second and third antennas spaced apart from each other, a method for determining the actual geographic location of said receiver, said method comprising: receiving said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; measuring the respective time of arrival using said PN sequence phase relative to at least one of said first, second and third transmitted data packets at said receiver; storing the geographic coordinates of said first, second and third antennas; and computing the actual geographic location of said receiver from said stored geographic coordinates of said first, second and third antennas and said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 69
Dependent Claim
52 words
A wireless communication system in accordance with claim 57, wherein said step of computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said first and second antennas.
Claim 70
Dependent Claim
52 words
A wireless communication system in accordance with claim 58, wherein said step of computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said second and third antennas.
Claim 71
Dependent Claim
100 words
A wireless communication system in accordance with claim 59, wherein said step of computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the position of said receiver as the intersection of first and second hyperbolas; said first hyperbola being the locus of all points having a fixed difference in distance between said receiver to said first and second antennas, said second hyperbola being the locus of all points having a fixed difference in distance between said receiver to said first and third antennas.
Claim 72
Dependent Claim
94 words
A wireless communication system in accordance with claim 57, wherein said step of computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing a first distance to said first antenna, computing a second distance to said second antenna and computing a third distance to said third antenna, and calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 73
Dependent Claim
80 words
A method in accordance with claim 57, further comprising: computing a location file at said receiver comprising data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said receiver, said location file representing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets containing data; and transmitting the contents of said location file from said receiver to a base station.
Claim 74
Dependent Claim
77 words
A method in accordance with claim 62, at said base station comprising: receiving the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said receiver; computing the location of said receiver to form a computed receiver location; and transmitting the computed location of said receiver to said receiver, said receiver method further comprising the step of receiving said computed receiver location.
Claim 75
Dependent Claim
60 words
A method in accordance with claim 62, wherein said location file contains data representing the distance to one of said first, second and third antennas, and the respective differences in time of arrival of received data packets between said one of said first, second and third antennas, and the remaining two other ones of said first, second and third antennas.
Claim 76
Dependent Claim
27 words
A method in accordance with claim 62, wherein said location file data is accessed by said base station by dial up through the public switched telephone network.
Claim 77
Dependent Claim
26 words
A method in accordance with claim 62, wherein said location file data is accessed by a password and transmitted to said base station in encrypted form.
Claim 78
Dependent Claim
26 words
A method in accordance with claim 62, wherein said location file data is transmitted to said base station responsive to an initiation indication at said receiver.
Claim 79
Dependent Claim
168 words
In a wireless CDMA communication system, wherein data packets are communicated from a plurality of transmitters to a receiver using at least one CDMA PN sequence to form a plurality of received data packets, said CDMA communication system including first, second and third antennas spaced apart from each other, an apparatus for determining the actual geographic location of said receiver, said apparatus comprising: means for receiving said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; means for measuring the respective time of arrival using said PN sequence phase relative to at least one of said first, second and third transmitted data packets at said receiver; means for storing the geographic coordinates of said first, second and third antennas; and means for computing the actual geographic location of said receiver from said stored geographic coordinates of said first, second and third antennas and said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 80
Dependent Claim
168 words
In a wireless CDMA communication system, wherein data packets are communicated from a plurality of transmitters to a receiver using at least one CDMA PN sequence to form a plurality of received data packets, said CDMA communication system including first, second and third antennas spaced apart from each other, an apparatus for determining the actual geographic location of said receiver, said apparatus comprising: means for receiving said first, second and third transmitted data packets at said receiver forming respective first, second and third received data packets; means for measuring the respective time of arrival using said PN sequence phase relative to at least one of said first, second and third transmitted data packets at said receiver; means for storing the geographic coordinates of said first, second and third antennas; and means for computing the actual geographic location of said receiver from said stored geographic coordinates of said first, second and third antennas and said respective measured time of arrival of said first, second and third transmitted data packets.
Claim 81
Dependent Claim
52 words
A wireless communication system in accordance with claim 68, wherein said means for computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said first and second antennas.
Claim 82
Dependent Claim
52 words
A wireless communication system in accordance with claim 69, wherein said means for computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the difference in distance between said receiver to said second and third antennas.
Claim 83
Dependent Claim
100 words
A wireless communication system in accordance with claim 70, wherein said means for computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing the position of said receiver as the intersection of first and second hyperbolas; said first hyperbola being the locus of all points having a fixed difference in distance between said receiver to said first and second antennas, said second hyperbola being the locus of all points having a fixed difference in distance between said receiver to said first and third antennas.
Claim 84
Dependent Claim
94 words
A wireless communication system in accordance with claim 68, wherein said means for computing the actual geographic location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets comprises computing a first distance to said first antenna, computing a second distance to said second antenna and computing a third distance to said third antenna, and calculating the position of said receiver as the intersection of three constant distance curves from said respective first, second and third antennas at said respective first, second and third distances.
Claim 85
Dependent Claim
84 words
An apparatus in accordance with claim 68, further comprising: means for computing a location file at said receiver comprising data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said receiver, said location file representing the location of said receiver from said respective measured time of arrival of said first, second and third transmitted data packets containing data; and means for transmitting the contents of said location file from said receiver to a base station.
Claim 86
Dependent Claim
83 words
An apparatus in accordance with claim 73, at said base station comprising: means for receiving the contents of said location file containing data corresponding to said measured respective time of arrival of said first, second and third transmitted data packets at said receiver; means for computing the location of said receiver to form a computed receiver location; and means for transmitting the computed location of said receiver to said receiver, said receiver apparatus further comprising the means for receiving said computed receiver location.
Claim 87
Dependent Claim
60 words
An apparatus in accordance with claim 73, wherein said location file contains data representing the distance to one of said first, second and third antennas, and the respective differences in time of arrival of received data packets between said one of said first, second and third antennas, and the remaining two other ones of said first, second and third antennas.
Claim 88
Dependent Claim
27 words
An apparatus in accordance with claim 73, wherein said location file data is accessed by said base station by dial up through the public switched telephone network.
Claim 89
Dependent Claim
26 words
An apparatus in accordance with claim 73, wherein said location file data is accessed by a password and transmitted to said base station in encrypted form.
Claim 90
Dependent Claim
26 words
An apparatus in accordance with claim 73, wherein said location file data is transmitted to said base station responsive to an initiation indication at said receiver.
Claim 91
Dependent Claim
36 words
A method in accordance with claim 62, further comprising transmitting a location file containing data representing said location of said subscriber station from said subscriber station to a location service center separate from said base station.
Claim 92
Dependent Claim
38 words
An apparatus in accordance with claim 73, further comprising means for transmitting a location file containing data representing said location of said subscriber station from said subscriber station to a location service center separate from said base station.